How to choose a high temperature magnetic drive pump?

The advantages of the high-temperature magnetic drive pump in the actual operation process are very obvious. You can also see what its operating principle is when you choose. If you can understand the specific operating principle, it will be very easy to choose to use a high-temperature Mag pump. , SAIKEN Pump Factory will give you a detailed introduction to help you better choose equipment, and you can also know the precautions for actual operation and use.

1. The principle of operation

To put it simply, the high-temperature magnetic pumps currently available in the market mainly use magnetic rotators to achieve non-contact force transmission, so as to replace dynamic seals with static seals. The purpose of this is to make the entire pump leak-free, so everyone When in use, you can also find a gasket with a good sealing effect, which can make the entire pump run normally.

2. More demand in the refining and chemical industry

For the refining and chemical industry, the reason why it is necessary to choose the magnetic pump manufactured by Shanghai Jianai Magnetic Pump Factory is because there may be a lot of flammable, explosive, toxic or other wiring problems in the actual production process. Now I am choosing After the magnetic pump can solve these problems, it can also improve the efficiency in the production and processing process, and further protect the physical and mental health of the employees, and the safety in the production process will be higher.

Through the above situation, everyone can know the specific operating principle of the high-temperature magnetic pump and its use in the entire market. Although there is a lot of demand in the refining and chemical industry, we should also look at which ones are more suitable for us when choosing , By choosing the equipment provided by professional manufacturers, it can be kept without leakage during use, and of course, safe production can be ensured.

Mag pump — The material of pump body has four kinds to choose from, including PP(Polypropylene), GFRPP(Glass Fiber Filled Polypropylene), PVDF(Natural PVDF), CFRETFE(Carbon Fiber Filled ETFE). Correct choice of pump

Advantages of NYP high viscosity pump

Advantages of NYP high viscosity pump：

(1) The conveying liquid is stable, without pulsation, low vibration and low noise.
(2) It has strong self-priming performance.
(3) The correct selection of parts and materials can transport a variety of corrosive media, and the use temperature can be 200 ℃.
(4) The rotation of the inner and outer rotors is the same, the wear is small, and the service life is long.
(5) The pump speed and flow rate are linear functions, and the flow rate of the pump can be changed by changing the rotation rate appropriately.
(6) It is especially suitable for the transportation of high-viscosity and consistency medium.

product advantages:
(1) The pump is mainly composed of inner and outer rotors, shafts, pump bodies, pump covers, brackets, seals, bearings, etc.
(2) The conveying liquid is stable, without pulsation, low vibration and low noise.
The speed of the pump and the flow rate are linear functions, and the speed of the pump can be changed appropriately to change the flow rate of the pump.
is especially suitable for the transportation of high-viscosity media.
The shaft end adopts mechanical seal.

NYP gear pump — NYP series of high viscosity gear pump is similar to US viking pump, it is stable, pulseless, with small vibration and low noise. It also has a good self-priming ability, which is able to transfer high viscosity resin, polyurethane, poly-aether, polyethylene or some-thing similar. And there’s double jacket type, pump can get heated by heat steam, thermal oil,electrical heating.

NYP pump manufacturers and suppliers

Features of high-quality high-viscosity pumps

Features of high-quality high-viscosity pumps:

The selection of high-viscosity pumps must be made rationally to ensure that the selected NYP high-viscosity pumps have good functions and characteristics. The correct selection of high-viscosity pumps is as follows:

1. High-viscosity pump seal maintenance, replacement, and upgrade are convenient, and it is more convenient in maintenance. The bearing cavity of high-viscosity pump is enlarged, and the bearing part becomes an integral part. Just unscrew the top screw to unscrew the entire sealing cavity, sealing It can be directly removed from the bearing box part of the bracket, which not only greatly saves maintenance time, but also makes maintenance easier. High-viscosity pumps have good maintainability during maintenance, and are convenient for factoring and updating.

2. The third advantage of increasing the bearing cavity of high-viscosity pumps: the space provided by the large bracket cavity allows the packing to be adjusted without disassembling the pump.

3. Some important parts can be replaced with various high temperature resistance, wear resistance, corrosion resistance, high pressure resistance, and self-lubricating materials according to process needs.

4. The solid casting of the whole material avoids the impact on the seal and bearing caused by vibration, strong external force, etc. Ensure the stability of pump delivery.

5. Adjustable gear tail gap of high viscosity pump: High viscosity pump can adjust the gear gap according to the need of viscosity to meet the process requirements of the pump under different viscosity. The second advantage of the integral bearing box is that the gap adjustment can be realized by simply rotating the bearing box. The operation is simple, no need to disassemble any parts of the pump.

6. The large flow pump can work under high pressure without major accidents.

7. The powerful thickened shaft ensures the stability of pump delivery.

8. The thermal insulation jacket is integrally cast, with good thermal insulation effect and zero leakage.

9. A variety of high temperature resistant packing seals, special materials, and special designs have created a miracle that packing seals are better than mechanical seals.

Correct installation method of PP magnetic drive pump

The plastic magnetic drive pump is widely used in petroleum, chemical, pharmaceutical, electroplating, environmental protection, water treatment and other enterprises to pump flammable, explosive, toxic and precious liquids due to its fully sealed, leak-free, and corrosion-resistant characteristics. The ideal pump for civilized workshops and factories without leakage and pollution.

The following items should be considered during the installation of the plastic magnetic drive pump:

1. Put the unit on the foundation, put a pair of wedge pads between the bottom plate and the foundation, and adjust the wedge pad to correct the level of the pump. After adjustment, tighten the anchor bolts.

2. The pump and motor should be checked before installation. All parts should be intact and there should be no debris in the magnetic pump.

3. Make a concrete foundation according to the size of the foundation, and bury the anchor bolts at the same time.

4. The suction and discharge pipelines of the magnetic pump should be supported by a magnetic pump. The diameter of the inlet and outlet pipelines should be the same as that of the pump inlet and outlet.

5. After the installation is completed, finally turn the magnetic drive pump coupling by hand to check whether there is any rubbing phenomenon. The installation is complete if the rotation is easy and even.

6. Magnetic drive pumps are strictly prohibited from pumping media with particles and easy to crystallize, and continuous operation with the discharge port closed is not allowed, and the minimum flow must be maintained.

7. In order to prevent debris from entering the magnetic drive pump, a filter should be installed at the inlet, and the filtering area should be 3 to 4 times larger than the cross-sectional area of the pipeline.

8. When the medium viscosity is too high, the performance and power of the magnetic drive pump will change. For details, please follow the instructions.

9. It must be ensured that the installation height of the magnetic drive pump conforms to the cavitation margin of the pump, and the pipeline loss and medium temperature must be considered.

Matters needing attention in the use of plastic magnetic drive pump

Matters needing attention in the use of plastic magnetic drive pump

The drive device of the plastic magnetic pump adopts an active magnet coupling to be directly mounted on the motor shaft, the pump chamber is completely enclosed, and the impeller with a magnet on the pump shaft is indirectly driven to rotate through magnetic coupling. The structure is compact, safe and energy-saving. Although the sturdy and durable pump body structure of the plastic magnetic pump is plastic, the plastic magnetic pump housing is made of metal material, so the pump body can bear the weight of the pipeline and withstand mechanical impact.

The following are common items to be noted during use:

1. Because the cooling and lubrication of the plastic magnetic pump bearings rely on the conveyed medium, dry running is prohibited, and at the same time, no-load running caused by restarting after a power cut in the middle of work is avoided.

2. If the conveyed medium contains solid particles, a filter should be added to the entrance of the plastic magnetic pump: if it contains ferromagnetic particles, a magnetic filter should be added.

3. The ambient temperature of the plastic magnetic pump in use should be less than 40℃, and the temperature rise of the motor should not exceed 75℃.

4. The medium sent by the elm should be within the allowable range of the plastic magnetic pump material. The operating temperature of the plastic magnetic pump cannot be lower than minus 30℃ and the highest temperature cannot exceed 100℃. Transport the liquid without hard particles and fibers with suction pressure not greater than 0.2MPa, maximum working force 1.6MPa, density not greater than 1600Kg/m3, viscosity not greater than 30X10-6m㎡/s.

5. For the medium that is easy to deposit and build up, the conveying liquid should be cleaned in time after use to drain the liquid accumulation in the plastic magnetic pump.

6. After 1000 hours of normal operation of the plastic magnetic pump, the wear condition of the bearing and end face moving ring should be disassembled, and the wearing parts that are not suitable for reuse should be replaced.

Magnetic drive pump manufacturers and suppliers from China

Correct use of plastic magnetic drive pump

Correct use of plastic magnetic drive pump

1. Start and run

(1) Clean up the debris surrounding the equipment that affects the safety of the equipment and operators.

(2) Before driving, fill the pump with the liquid to be delivered (if the pump is sucking up), open the inlet valve, close the outlet gate valve, and connect the power supply.

(3) Turn on the power supply and check whether the rotation direction of the pump is correct.

(4) Several sets of trial run for 3-6 minutes, such as five abnormal phenomena can be put into operation.

(5) When driving for the first time after a long-term shutdown or pump overhaul, remove the fan cover of the motor and crank manually to check whether the fluoroplastic magnetic pump rotates flexibly. Install the fan cover after confirming that there is no problem.

2. Normal parking

The gate valve of the outlet should be closed first, and then the power supply should be cut off.

3. Emergency stop

Stop the motor immediately, and then close the outlet valve and inlet valve.

4. Repair and maintenance

(1) Regularly check the pump and motor, and replace vulnerable parts.

(2) When the pump is not in use for a long time, clean the flow passage in the pump and cut off the power supply.

(3) Dry operation is strictly prohibited.

5. Precautions during operation

(1) Pay attention to the pressure difference between the front and back of the filter on the suction side. When the pressure difference increases, it means that the filter is blocked by foreign matter. The pump must be stopped to clean the coarse filter.

(2) Whether the discharge volume and discharge pressure meet the specified values.

(3) Whether there is abnormal sound or vibration. If abnormal sound or vibration occurs, it generally indicates cavitation or excessive bearing wear.

(4) Whether the fluorine plastic magnetic pump has cavitation: Open the outlet valve of the pump. When the flow reaches a certain amount, it suddenly makes noise and vibration. At this time, continue to open the valve. If the flow still does not increase, it means that there is cavitation. When there is cavitation, perform exhaust operation. Note: The magnetic pump must not be operated in the cavitation state. If it continues to operate in this state, it will cause early bearing wear.

(5) Whether the current value of the motor exceeds the rated current.

(6) Whether the temperature of each part of the pump is abnormally overheated.

Plastic Magnetic Drive Pump — The material of pump body has four kinds to choose from, including PP(Polypropylene), GFRPP(Glass Fiber Filled Polypropylene), PVDF(Natural PVDF), CFRETFE(Carbon Fiber Filled ETFE). Correct choice of pump body material depends on acid / alkaline density of solution.

Magnetic drive pump manufacturers and suppliers from China

Correct selection method of magnetic drive pump

Correct selection method of magnetic drive pump

1. Choose according to the physical and chemical properties of the conveying medium

The physical and chemical properties of the conveying medium directly affect the performance, material and structure of the pump, which is one of the important factors that need to be considered when selecting a model. The physical and chemical properties of the medium include: medium name, medium characteristics (such as corrosiveness, abrasiveness, toxicity, etc.), solid particle content and particle size, density, viscosity, vaporization pressure, etc. If necessary, the gas content in the medium should also be listed, indicating whether the medium is easy to crystallize, etc.

2. Choose according to process parameters

Process parameters are a particularly important basis for the selection of magnetic drive pumps, and should be carefully determined according to the process flow and operating range. For example, flow and head are one of the important process parameters for pump selection, which are directly related to the production capacity and conveying capacity of the entire device.

(1). Flow rate: Flow rate refers to the amount of medium required to be transported by the pump during the production of process equipment. The technician should give the normal minimum and maximum flow. Often only the normal flow and rated flow are given on the pump data sheet. When selecting a chemical magnetic pump, the rated flow must not be less than the maximum flow of the device, or 1.1~1.15 times the normal flow.

(2). Head: refers to the head value required by the process device, also known as the calculated head. Generally, the rated head of the pump is required to be 1.05~1.1 times the required head of the device.

(3). Inlet pressure and outlet pressure. Inlet and outlet pressure refer to the pressure at the inlet and outlet flanges of the pump. The size of the inlet and outlet pressure affects the pressure resistance requirements of the shell and shaft seal (isolation sleeve).

(4). Temperature: refers to the temperature of the inlet medium of the pump. Generally, the normal, minimum and maximum temperature values of the inlet medium of the magnetic pump should be given.

(5). Device NPSH NPSHa, also called effective NPSH.

(6). Operating status The operating status is divided into continuous operation and intermittent operation.

3. Choose according to the field conditions of the magnetic drive pump

Field conditions of magnetic drive pump include:

(1). Installation location (indoor, outdoor, plateau, seaside).

(2). Ambient temperature.

(3). Relative humidity.

(4). Atmospheric pressure.

(5) Atmospheric corrosion conditions.

(6). Classification of hazardous areas.

4. Choose according to the piping layout conditions of the system

The piping layout conditions of the system refer to some data such as the height, distance and direction of the conveyed liquid, the lowest liquid level on the suction side, the highest liquid level on the discharge side, etc., and the pipe specifications and their length, materials, pipe fitting specifications, quantity, etc., in order to carry out the system lift Calculation and verification of cavitation margin.

Five. Choose according to operating conditions

There are many operating conditions, such as saturated vapor pressure in the operation of the medium (liquid), suction side pressure (absolute), discharge side container pressure, altitude, ambient temperature, whether the operation is intermittent or continuous, and the position of the pump is fixed It’s still removable.

6. For pumps whose power is less than 10KW, the use of chemical magnetic pumps can ensure the effect.

Installation and use of stainless steel magnetic drive pump

Installation and use of stainless steel magnetic drive pump

SS magnetic drive pump is a new product that applies the working principle of permanent magnet coupling to the pump. It has reasonable design, advanced technology, full sealing, no leakage, and corrosion resistance. Its performance has reached the advanced level of similar foreign products.

Stainless steel magnetic pump installation and use

1. The stainless steel magnetic pump should be installed horizontally, not upright, and the pump body must not bear the weight of the pipeline. For occasions with special requirements for vertical installation, the motor must face upwards.

2. When the suction liquid level is higher than the pump axis line, just open the suction pipe valve before starting. If the suction liquid level is lower than the pump axis line, the pipeline needs to be equipped with a bottom valve.

3. The pump should be inspected before use. The motor fan blades should rotate flexibly, without jamming or abnormal noise, and all fasteners should be tightened.

4. Check whether the rotation direction of the motor is consistent with the steering mark of the stainless steel magnetic pump.

5. After the motor starts, slowly open the discharge valve. After the pump enters the normal working state, adjust the discharge valve to the required opening.

6. Before the pump stops working, first close the discharge valve, and then close the suction pipe valve.

Magnetic drive pump manufacturers and suppliers from China

SS magnetic drive pump — The stainless steel magnetic pump is fully sealed, has no leakage, is clean and environmentally friendly, runs quietly and has low vibration. It is the first choice for pumping flammable, explosive, corrosive and precious liquids. It saves a lot of cost for users because of energy saving, environmental protection, reliability and safety, and substitution of imports. It is widely used in the fields of chemical industry, alkali making, petroleum, medicine, hygiene, pesticide, paper making, dyestuff, sewage treatment and so on.

Precautions for the correct use of stainless steel magnetic drive pump

Precautions for stainless steel magnetic drive pump:

1. Stainless steel magnetic drive pump should prevent particles from entering

(1). Ferromagnetic impurities and particles are not allowed to enter the magnetic drive and bearing friction pairs.

(2). After conveying the medium that is easy to crystallize or precipitate, it should be washed in time to ensure the service life of the sliding bearing.

(3). When transporting media containing solid particles, filter at the inlet of the pump flow pipe.

2. Stainless steel magnetic pump should prevent demagnetization

(1). The magnetic torque cannot be designed too small.

(2). It should be operated under the specified temperature conditions, and the medium temperature is strictly prohibited. A platinum resistance temperature sensor can be installed on the outer surface of the magnetic pump isolation sleeve to detect the temperature rise in the annulus area so that it can alarm or shut down when the temperature exceeds the limit.

3. Stainless steel magnetic pump should prevent dry friction

(1). No idling is allowed.

(2) It is strictly forbidden to evacuate the medium.

(3). When the outlet valve is closed, the continuous operation time of the pump shall not exceed 2 minutes to prevent the magnetic actuator from overheating and failing.

Analysis of common failures of stainless steel magnetic pump

1. Problems caused by cavitation of the magnetic pump: The main reasons for the cavitation of the pump are the large resistance of the pump inlet pipe, the more gas phase of the conveying medium, the insufficient filling of the pump, and the insufficient energy head of the pump inlet. Cavitation on the pump The hazard is the most serious. When cavitation occurs, the pump vibrates violently and the balance is severely damaged, which will cause damage to the pump bearings, rotor or impeller. This is a common cause of magnetic pump failures.

2. No medium or low flow of conveying medium: make the rotor main shaft and stable bearing dry friction and burn the bearing. The magnetic pump is lubricated and cooled by the conveying medium to the sliding bearing. It slides without opening the inlet valve or outlet valve. The bearing is damaged due to high temperature due to no transmission medium lubrication and cooling.

3. Isolation sleeve damage: The magnetic coupling of the magnetic pump is cooled by the medium conveyed by the pump. If there are hard particles in the medium, it is easy to cause the isolation sleeve to be scratched or pierced. Sometimes if the maintenance method is improper, it may also cause isolation. Damage to the sleeve.

Magnetic drive pump manufacturers and suppliers from China.

stainless steel Magnetic drive pump — Stainless steel magnetic Drive pump is abbreviated as SS magnetic Drive pump in china. The flow parts are made of 304, 316L and other high-quality stainless steel materials. The inner and outer magnetic rotors are made of rare earth permanent magnets with high magnetic energy product and high coercivity. It has high efficiency and energy saving, wide media application, and durability High temperature, strong magnetism, non-demagnetization and other advantages, it is a new type of high-quality magnetic drive centrifugal pump that uses magnetic coupling to realize non-contact transmission and non-moving sealing.

Application of chemical magnetic drive pump

Application of chemical magnetic drive pump

The chemical magnetic pump is a chemical process pump that uses permanent magnets to achieve non-contact indirect transmission.

Features of chemical magnetic pump:

The chemical magnetic pump replaces the dynamic seal with a static seal, so that the flow parts of the pump are in a completely sealed state, and completely solves the inevitability of other pump mechanical seals. The chemical magnetic pump uses corrosion-resistant fluoroplastics, stainless steel, etc. as manufacturing materials, so it has good corrosion resistance and can protect the conveyed medium from pollution.

The flow parts are made of corrosion-resistant materials such as stainless steel and fluoroplastics, and the leak-free sealing structure design ensures the safe transportation of chemical fluids.

The maximum efficiency of the pump reaches 50-55%, and the design process of the pump is fully considering energy saving.

The structure is simple, and the main components are modularized for easy and quick disassembly and inspection. The wearing parts can be replaced separately.

Application of chemical magnetic pump:

It can be used as sulfuric acid pump, nitric acid pump, hydrochloric acid pump, hydrofluoric acid pump, phosphoric acid pump, acid unloading pump, unloading pump, dosing pump, pickling pump, acid circulation pump, acid circulation pump, lye pump. Reasonable design, advanced technology, fully sealed, no leakage, strong corrosion resistance, etc., widely used in: chemical industry, acid making, alkali making, smelting, rare earth, pesticides, dyes, medicine, paper making, electroplating, pickling, Radio, scientific research institutions, national defense industry and other units pump acid and lye.