Application of stainless steel gear pump in food industry

Botou Saiken pump industry stainless steel gear pumps are divided into internal meshing and external meshing. The gears in external meshing stainless steel gear pumps have arc teeth, straight teeth, involute tooth shapes, etc. The gears in internal meshing stainless steel gear pumps It is the inner and outer rotor, the material is 304, 316 and food stainless steel. The stainless steel gear pump has the advantages of small pressure fluctuation, low noise, high rate and long life. It is a new series of energy-saving pumps.

The SS gear pump is suitable for conveying bone oil or other liquids with a wide viscosity range that does not contain solid particles and fibers, and the temperature is not higher than 300 ℃.

It is used in oil transportation system, petroleum, chemical industry, paint, grease, medicine, dye, food and other industries. Today I will focus on the application of stainless steel gear pumps in the food industry.

Stainless steel gear pumps are still widely used in the food industry. In terms of type selection, they can be roughly divided into internal mesh stainless steel gear pumps and external mesh stainless steel gear pumps. The selection is based on the characteristics of the viscosity, flow, pressure, temperature and other characteristics of the liquid conveyed. The viscosity range of meshed stainless steel gear pumps is much wider. When purchasing, you need to provide various parameters of the actual working conditions to the manufacturer, so as to ensure that the product you buy is the model you need. Stainless steel gear pump shaft end seals are designed in three forms: mechanical seal, packing seal, and magnetic seal. You can decide the sealing form and specific material configuration according to your own cost budget and site environment.

1. Edible oils, vegetable oils, animal oils, glycerin, olive oil, sesame oil, etc. These are not very viscous materials. External gear stainless steel gear pumps are used more frequently. Mechanical seals are used for sealing. Overflow parts are made of food stainless steel. The electrical aspects can be selected according to your requirements.

2. Flowable animal fats, vegetable fats, honey, syrup, chocolate, coconut milk and other non-lubricating materials with relatively high viscosity are preferred for internal gearing stainless steel gear pumps, that is, high-viscosity pumps made of stainless steel, with a viscosity of up to 60 Wanlisi, there are many options for the direction of import and export, and three types of sealing are available. It can be directly connected to the reduction motor or belt drive.

3. When conveying materials containing granular materials, when a stainless steel gear pump conveys materials containing hard particles, a filter should be installed in front of the pump to filter the solid particles. If soft particles are used, the gears or rotors of the stainless steel flow-through parts should be heat-treated and hardened Improve wear resistance.

Stainless steel gear pumps, both internally and externally engaged, have applications in different operating conditions in the food industry, and each has its own characteristics. Botou Saiken Pump Industry welcomes your inquiry at any time

china Stainless steel gear pump manufacturer
china Stainless steel gear pump manufacturer
supplier of SS Gear Pump china
supplier of SS Gear Pump china
gear pump factory from china
gear pump factory from china

Stainless steel gear pump manufacturer,supplier of SS Gear Pump china, gear pump factory from china.

Boiler feed water pump DG type industrial boiler pump feed water pump Boiler feed water pump manufacturer

The DG horizontal multi-stage boiler feed water pump adopts the hydraulic model of high-efficiency and energy-saving products recommended by the state. Therefore, the DG boiler feed water pump has high efficiency and wide performance range, and can better meet the requirements of users. It is used to replace the old type GC centrifugal pump. The horizontal and multi-stage pumps are used in the structure, which is safe, stable, low noise, long life and easy to install and maintain. This type of pump is especially suitable for industrial boiler water supply and drainage, cooling water delivery, etc. It can also be used to transport hot water, oil products, corrosive media, etc. by changing the material, sealing form and adding cooling system. It is widely used in petrochemical industry, hot water circulation, environmental protection industry, pure water transportation and other industries.

DG TYPE Boiler feed water pumps
Boiler feed water pump DG type industrial boiler pump feed water pump Boiler feed water pump manufacturer

Scope of application of asphalt bitumen pump

Due to its special working environment, the bitumen pump must be regularly inspected during the work process, and maintenance specifications must be formulated. Its supporting facilities must also be replaced and cleaned on time, such as fuel filters and fuel tanks. Regular replacement is required, and direct oil supply must never be used. It will seriously affect the service life of the asphalt pump. After continuous work for a period of time, the accessories must be disassembled and cleaned, and then reinstalled and used at startup. When disassembling, you need to be careful not to knock the asphalt pump body vigorously. The disassembled accessories must be placed on a soft cotton cloth to prevent knocking.

Jacketed Bitumen Transfer Pump
Jacketed Bitumen Transfer Pump
Asphalt Gear Pump - NYP Type
Asphalt Gear Pump – NYP Type
3QGB Triple Screw Asphalt Pump
3QGB Triple Screw Asphalt Pump

Discrimination of relevant pipelines and flow factors for gear oil pump selection

1. The gear oil pump should pay attention to the following items when designing and arranging pipelines:

A. Reasonably choose the diameter of the gear oil pump pipeline. The diameter of the pipeline is large. At the same flow rate, the liquid flow speed is small, and the resistance loss is small, but the price is high. The small diameter of the pipeline will cause the resistance loss to increase sharply and increase the head of the selected pump. , With the increase of the distribution power, the cost and operating expenses have increased. Therefore, it should be considered from the technical and economic perspectives.

B. The discharge pipe and its pipe joint should consider the maximum pressure it can bear.

C. The pipeline layout should be as straight as possible, minimize the accessories in the pipeline and minimize the length of the pipeline. When turning, the bend radius of the elbow should be 3 to 5 times the diameter of the pipeline, and the angle should be greater than 90 ℃.

D. The discharge side of the pump must be equipped with valves (ball valves or globe valves, etc.) and check valves. The valve is used to adjust the working point of the pump. The check valve prevents the pump from reversing when the liquid flows backward, and prevents the pump from being hit by water hammer. (When the liquid flows backward, a huge reverse pressure will be generated, which will damage the pump)

Second, the influence of gear oil pump flow head

Determine the flow rate

A. If the minimum, normal and maximum flow rates have been given in the production process, the maximum flow rate should be considered.

B. If only the normal flow is given in the production process, a certain margin should be considered.

For ns100 high flow low head pumps, the flow margin is taken as 5%, for ns50 small flow high head pumps, the flow margin is taken as 10%, 50≤ns≤100 pumps, the flow margin is also taken as 5%. For inferior and harsh operating conditions, the flow margin should be 10%.

C. If the basic data only gives weight flow, it should be converted into volume flow.

china gear oil pump
china gear oil pump

Gear oil pump mechanical seal corrosion types and safe operation points

There are many cases of damage to the mechanical seal of the gear oil pump. The common damage forms are mainly corrosion damage, thermal damage and mechanical damage. Among them, corrosion damage is more harmful. Due to the special structure and working environment and conditions of the mechanical seal, the forms of corrosion damage are also diverse.

Corrosion of mechanical seal:
Non-metallic ring corrosion

First, graphite ring corrosion. The impermeable graphite ring impregnated with resin, Seiken pump experts believe that there are three reasons for its corrosion: First, when the end face is overheated, the temperature is greater than 180oC, the impregnated resin should be broken away from the graphite ring, so that the ring wear resistance decreases; Second, improper selection of impregnated resin will cause chemical changes in the medium and reduce the wear resistance. Third, the resin impregnation depth is not enough. When the impregnated layer is removed, the wear resistance decreases. Therefore, the establishment of a sealed cooling system, the selection of corrosion-resistant impregnating resin, the use of high-pressure impregnation, increasing the depth of impregnation is very necessary.

Second, the oxidation of the graphite ring. In oxidizing media, when the end face is dry friction or poor cooling, the temperature of 350 ~ 400 ℃ can make the graphite ring react with oxygen, generate CO, gas, can make the end face rough, or even crack. The non-metallic ring will also break under the simultaneous action of chemical medium and stress.

Third, corrosion of Teflon (F4) seal ring. F4 is filled with glass fiber, graphite powder, metal powder, etc. to improve its temperature resistance and wear resistance. The corrosion of the filled F4 ring mainly refers to the selective corrosion, dissolution or deterioration of the filling. For example, in hydrofluoric acid, the glass fiber molecules are thermally corroded. Saiken pump experts believe that what is filled should depend on the specific situation

Metal ring corrosion

First, the surface is evenly corroded. If the surface of the metal ring contacts the corrosive medium, and the metal itself is not resistant to corrosion, surface corrosion will occur, the phenomenon of which is leakage, early wear, damage, and sound. There are two forms of uniform corrosion on the metal surface: film formation and filmless. The corrosion of metal without film is very dangerous. The corrosion process is carried out at a certain speed. This is mainly caused by the wrong material selection. The corrosion of the film formation, the passivation film usually has the characteristics of protection, but the material used for the metal sealing ring, the Seiken pump industry experts believe that the passivation film on the surface such as stainless steel, cobalt, chromium alloy, etc., is destroyed by the end friction Under hypoxic conditions, new films are difficult to form, which intensifies galvanic corrosion.

Second, stress corrosion cracking. Under the simultaneous action of corrosion and tensile stress, the metal first generates cracks in the weak area, and then develops deeper to produce cracks, called stress corrosion cracking, and selects welded carbide and cast iron, tungsten carbide, titanium carbide and other sealing rings. Prone to stress corrosion cracking. The cracks of the seal ring are generally radial divergent and can be one or more. These cracks communicate with the entire sealing end face, accelerate the end face wear, and increase the leakage.

Safe operation of SS gear oil pump

1. Gear oil pumps and jacks should use working oil of specified oil number, generally No. 10 or No. 20 mechanical oil, or other hydraulic oils with similar properties, such as transformer oil. Saiken pump experts believe that the oil poured into the tank must be filtered. The gear oil pump should not work under overload. The safety valve must adjust the pressure according to the rated oil pressure of the equipment. Arbitrary adjustment is strictly prohibited.

2. Avoid bending the tubing under working pressure. The oil tank connecting the gear oil pump and the jack should be kept clean. When not in use, it should be blocked with screws to prevent the ingress of sand. The exposed oil nozzle of the gear oil pump and the jack should be sealed with a nut to prevent dust and debris from entering the machine. After daily use, the gear oil pump should be wiped clean to remove the grease on the copper wire cloth.

3. Before operating the high-pressure gear oil pump, loosen each oil-line regulating valve, and then start the CS gear oil pump. After the empty load operation is normal, close the oil return valve, gradually screw in the oil valve stem, increase the load, and Pay attention to whether the pressure gauge pointer is normal.

4. Grounded power supply, the chassis must be grounded, and only after checking the line insulation, can the test run.

5. The oil-resistant rubber tube must be resistant to high pressure, and the working pressure should not be higher than the rated oil pressure of the gear oil pump or the actual maximum oil pressure. The length of the tubing should not be less than 2.5m. When one gear oil pump drives two jacks, the tubing specifications should be the same.

6. When the gear oil pump stops working, the oil return valve should be loosened slowly. After the pressure gauge slowly returns to zero, the oil pipe joint nut of the jack can be removed. It is strictly forbidden to disassemble or replace the oil pipe or pressure gauge during load.

7. Gear oil pump with double-acting jack, it is better to adopt two-way gear oil pump with two-way simultaneous oil delivery

China gear oil pump manufacturer & supplier
China gear oil pump manufacturer & supplier

China gear oil pump manufacturer & supplier

Noise problem of high viscosity gear pump

In high-viscosity gear pumps, in fluid delivery systems, rapid changes in liquid flow velocity, flow, and pressure, bursting of bubbles and alternating loads are common causes of noise.Gear pumps that deliver high-viscosity liquids are the main source of system noise. .

The transmission medium of NYP type high viscosity gear pump is not only the intermediary of energy transmission, but also the medium of lubrication, sealing and heat transfer. The gear pump of high viscosity liquid should achieve lower power consumption, less leakage and larger pressure The most output flow. The viscosity of the liquid reflects the difficulty of the medium flow. Too high a viscosity will increase the internal friction resistance, reduce the output power, waste energy, and produce an excessively high system temperature. When determining the medium to be transported, it should be Strictly follow the provisions on the product manual, try to use the fluid medium recommended by the manufacturer, and pay attention to consider the operating temperature range of the system. When you want to use it in a wider temperature range, the viscosity index of the conveying medium should be higher.

High viscosity gear pump When the viscosity of the liquid is high, or when the system is working in a cold environment, it must ensure that the transmission medium can flow smoothly. Many oils contain waxy components, which are easy to crystallize at low temperatures. The freezing point should be lower than the expected minimum operating temperature. In addition, the medium to be transported by the high-viscosity gear pump must be compatible with the rubber materials in the system such as seals, gaskets, hoses, etc. Reconfirm the conveying medium.

In general, the maximum allowable noise of a high-viscosity gear pump working in the open air should be less than 90 decibels, otherwise the noise source should be actively or passively contained, and the working time of workers directly exposed to the noise environment should be reduced. To control the noise, you must also take hearing protection measures. Once the high-viscosity gear pump has abnormal noise during the operation, it should be stopped immediately for inspection.

Reasonable determination of the working speed of the high-viscosity gear pump, so that the rotation of the gear and the shaft avoid the meshing resonance frequency, can prevent the noise from aggravating. Because the meshing frequency is close to the natural frequency of the gear train, resonance is easy to occur. Using appropriate vibration isolation technology Prevent the vibration from being transmitted to the adjacent structure. To this end, the gear pump and the drive motor should be connected through a flexible coupling and installed on the same bottom plate to ensure the coaxiality. The bottom plate is installed on the elastic support, which can be further improved Vibration isolation effect: An expansion cavity or accumulator is installed on the outlet pipe of the gear pump to absorb the pressure pulsation of the pump or the sudden pressure change in the buffer pipeline, which is an effective means to control the noise of the high viscosity gear pump.

Selection of working pressure of high viscosity gear pump

The rated pressure of a high-viscosity pump refers to the maximum allowable pressure during continuous operation of the pump, and its working pressure is determined by the external load, and the life of the pump is directly related to its working pressure. For gear pumps that do not work frequently, the working pressure can be taken as The rated pressure of the pump, considering the different product quality, it is best to reduce the rated pressure by 20% to 30%. For gear pumps that often work at higher pressures, the working pressure should be 1 to 2 lower than the rated pressure of the pump Pressure level. Petrochemical equipment is often operated continuously for 24 hours. At this time, the working pressure of the pump should be much lower than the rated pressure, and the working speed should also be lower than the rated speed. If the working pressure of the high viscosity SS gear pump is adjusted too high, It will make the gear pump run under overload.

8″ inch bitumen pumps

HL Type series inner gear asphalt pump is a kind of pump for conveying asphalt, emulsified asphalt, modified asphalt and other high viscous liquid. The pump design is reasonable, simple structure, easy to install, use and maintain. The pump is provided with heat preservation jacket, heat preservation medium: heat conduction oil or steam
Material cast steel or stainless steel，capacity: 110 m³/h & 150 m³/h，pressure: 3 Bar & 6 Bar

 

6" bitumen pumps

8" inch bitumen pumps

similar replacement pump for the Viking pump – NYP internal gear pump

The NYP internal gear pump produced by our company has the same structure and product performance as the Viking pumps, many of which originally used Viking pumps (Viking pumps)

Pumps) customers because of the high price of the pump and the cumbersome parts procurement

Can be quite satisfied, and finally adopted the NYP internal gear rotor pump to replace the pirate pump.The following describes the product characteristics of the NYP pump:
Smooth flow: no pulsation and pressure peaks, no pipe tremors Versatility: Just by adjusting the position of the rotor shaft, the same pump can come out

Dilute solution can come out high viscosity liquid such as asphalt, syrup, resin, polymer and so on.
Reversibility: You can reverse the flow of liquid by changing the direction of rotation of the gear. Both directions can fully exert the performance of the pump.

High vacuum allows rapid self-priming at maximum self-priming height, depending on the physical characteristics of the pumped liquid (temperature, vapor pressure, viscosity, etc.) Recommended: only

Two moving parts: driving wheel and moving wheel, only one shaft seal.
Sturdy heavy-duty structure: low speed. The outer housing of the extra large ball bearing can bear axial and radial loads.
Low wear rate: Because the driving wheel and driven gear are not in a multiple relationship. This means that wear can be evenly distributed on each gear. Because of a gear

Each gear on the contact with each gear on the other gear the same number of times.
Wear adjustment system: The wear of the rotor edge can be compensated by adjusting the position of the rotor shaft. In this way, even in the case of considerable wear, it can

similar the Viking pump in china
Heavy viscosity liquid pump

To ensure the stability of the pump.
Simple maintenance and low maintenance rate: inspection and adjustment can be performed without moving the pump, piping or pump drive.
Interactivity: The design of standard components allows the replacement of parts with different materials and characteristics. For example: there are a variety of shaft seal systems to choose from and can also be installed

The jacketed housing and shaft cover replace the standard parts.
The position of the port can be changed: the pump casing can be rotated on the bearing box to suck and discharge liquid from different positions.
Preheating: The heating jacket is either cast integrally with the housing, or installed on the end cover, or installed on the packing gland.
Bypass safety valve: The bypass safety valve is installed on the pump and is easy to adjust. On some models of the pump, a double safety valve is used with a heating jacket.

PVDF FRPP Magnetic drive pumps

The Magnetic pumps material is divided into PP (Polypropylene), GFRPP (Glass Fiber Filled Polypropylene), PVDF (Natural PVDF) CFRETFE (Carbon Filber Filled ETFE), and the pump body material is selected according to the acid concentration of the drug solution. For example, the PP pump body material is used to provide more acid and alkali resistance. PP / GFRPP can withstand temperature of 75 ℃, PVDF can withstand temperature of 90 ℃, and CFRETFE can withstand temperature of 100 ℃. The liquid medicine can be safely used for transmission.

1. Corrosion resistance
The main parts of the pump have excellent corrosion resistance. For example, the shaft material of the pump is ceramic and SIC. Among them, ceramics can be used for general low corrosive liquids, and SIC can resist high corrosive liquids.

PVDF FRPP Magnetic drive pumps
PVDF FRPP Magnetic drive pumps
PVDF FRPP Magnetic drive pumps

2. Innovative unique anti-idling design
The unique bearing design allows the liquid to circulate and cool between the impeller, the shaft center and the passive magnet when the pump is running. Even if the pump is idling, it will not cause a rapid temperature rise. High-performance magnetic drive pumps, abandon the design of the traditional traditional mechanical pump shaft seal, to achieve a complete seal of the pump, not to cause serious environmental pollution due to pump damage

CHINA PVDF FRPP Magnetic drive pumps
PVDF FRPP Magnetic drive pumps

3. Easy assembly
The internal parts of the magnetic drive pump without shaft seal are standardized, easy to assemble, and have a compact structure and high performance. In the process of disassembly and assembly, parts can be easily replaced without any special tools, so maintenance, disassembly, and inspection are very easy to complete, convenient and convenient. save time.

4. High durability
The motors of the MPX (180W ~ 260W) series are equipped with temperature protectors to prevent damage to the motor caused by the high temperature caused by overload.

5. Wide range of applications
Magnetic drive MPX series (180W ~ 260W) without shaft seal pump can be used in low flow / high head or high head / low flow, for a variety of industrial processes
(Such as: PCB manufacturing process, chemical industry; filtration cycle, etching, electroplating, surface treatment, sewage treatment, etc.) can be widely used, can exert excellent performance and durability.