Stainless Gear Pump
Why choose us
Company strength
Our company covers an area of 26,000 square meters, with 5 CNC machining centers; 6 CNC lathes; 6 CNC milling machines; 5 CNC grinders; and 30 other CNC equipment.
Professional team
We have an excellent and experienced workforce capable of providing customers with high-quality products, professional technical consultation and comprehensive services.
Our certifications
Now it has more than 20 patents, passed ISO9000 certification, and its products have passed CE certification.
Advanced equipment
Our company has advanced production and testing equipment to provide you with the best products.
What is Stainless Gear Pumpr
Stainless steel gear pumps are widely used in various industries for their durability, corrosion resistance, and efficient fluid transfer capabilities. However, proper installation and use of these pumps are crucial to ensure optimal performance and longevity.Stainless steel gear pumps are used in occasions with high hygienic working conditions, such as medicine and food safety industries, and weakly corrosive occasions, like fine chemicals, cosmetics, printing and dyeing, and brewing technology industries.
Universal gear pump with the good fluid compatibility, is widely used in different industries,
and which shows excellent preformance except acidic, strong alkaline, and chloride fluid.
Specially for the isocyanate, polyether polyols, two components A and B, epoxy resin or sodium silicate
Benefits of Stainless Gear Pumpr
Simple and compact structure
The most basic form of Stainless Gear Pump is two gears of the same size rotating in a closely matched shell. The interior of this shell is similar to the "8" shape, and two gears are installed inside. The outer diameter of the gears and the two sides of the shell are closely matched. The internal motor is compact, small in size and light in weight. It consists of aluminum alloy front cover, intermediate and back cover, alloy steel gears and aluminum alloy pressure plate, etc. Two DU bearings are installed in the front and back cover. Meanwhile, the gear pump is equipped with a differential pressure safety valve as overload protection, and the full return pressure of the safety valve is 1.5 times of the rated discharge pressure of the pump.
Strong self-priming force, large speed range
The material from the extruder enters the middle of the two gears at the suction port and fills this space, moving along the casing as the teeth rotate and finally discharging when the two teeth mesh. In fact, there is a very little fluid loss in the pump, because these fluids are used to lubricate the bearings and both sides of the gears, and the pump body is never be free of clearance fit. So the fluid can't be 100% discharged from the outlet, a small amount of fluid loss is inevitable, which makes the pump operating efficiency can't reach 100%. But the rotary gear pump can still operate well, for most extruded materials, can still reach 93% to 98% efficiency. The flow rate of the pump is directly related to the pump speed. The general flow range is 0.045-30ms/h, and the pressure range is 0.7-20MPa, and the working speed is 1200-4000r/min.
Suitable for highly viscous fluids
Stainless Gear Pump can be used for viscous and aggressive fluids. Gear pumps can handle fluids that are too viscous for centrifugal pumps. It is mainly used to transport various oils that are non-corrosive, free of solid particles and have lubricating ability .The fluids temperatures generally are not exceeding 70 °C, such as lubricating oil, edible vegetable oil, etc.
Easy maintenance and reliable work
Since the Stainless Gear Pump does not have to generate centrifugal force, it can run at a lower speed, which makes it smoother and easier to control. The pumping action is very controllable and mathematical: if you double the speed, you double the output. The output of a geared pump is independent of the discharge pressure. The pressure plate in the motor of the gear pump is the main element of radial and axial pressure compensation, which can reduce the bearing load and automatically adjust the axial clearance of the gear pump, thus effectively improving the performance index and working reliability of the gear pump; GM5, GPC4 series gear motor can provide single rotation without front bearing, double rotation without front bearing and single rotation with front bearing, double rotation with front bearing four types of structure. Among them, the gear motor with front bearing can withstand radial force and axial force.
Application of Stainless Gear Pumpr
The reason why it is called a stainless steel gear pump is because the material is 304 or 316 or 316L corrosion-resistant material, which can transport acidic or alkaline or mixed materials. For example, the chemical industry, printing and dyeing machinery, marine engineering and other corrosive working conditions.
01
The stainless steel gear pump is suitable for conveying places with strict noise requirements, high performance requirements and high volume efficiency, such as oil tanker truck transportation, test sites, medical industry, feed machinery, etc.
02
Stainless steel gear pump can transport food industry with high hygienic requirements, such as grain, oil, honey, coconut juice and other food transportation.
03
Stainless steel gear pump can be used for transportation of ship engineering, naval vessels, aviation kerosene, etc.
04
Stainless steel gear pumps can also be used in power plants, water conservancy projects, fuel oil systems, oil delivery systems, hydraulic engineering, etc. that require cautious explosion-proof environments.
05
Types of Stainless Gear Pumpr
Stainless Steel Gear Metering Pump
adpot the stainless steel material to meet the high standards of chemical and food industry with the especially solid structure, UK gear pump has long usability and excellent reliability. application of corrosion resistant material, make the series gear pump has a wide range of applications, from the highly sensitive chemicals to the corrosion of strong acid.
Magnetic Seal Gear Metering Pump
The magnetic seal consists of an outer magnet, an inner magnet and a spacer. The product in the gear pump is completely isolated from the external environment by an isolation sleeve, and the magnetic coupling is a completely sealed driving method, thus ensuring the safe pumping of environmentally harmful, toxic and odorous substances.An outer magnet mounted on the motor shaft rotates synchronously with the motor. Since the drive shaft is completely within the pump casing, no dynamic sealing is required and the pumped liquid is completely sealed. This design makes the magnetic coupling very safe and virtually maintenance free.
Servo Gear Metering Pump
with the especially solid structure,servo gear metering pump has long usability and excellent reliability. application of corrosion resistant material, make the series gear pump has a wide range of applications, from the highly sensitive chemicals to the corrosion of strong acid.
One-component Polyurethane Glue Pump
With the especially solid structure, corrosion resistance stainless steel gear metering pump has long usability and excellent reliability. Application of corrosion resistant material, make the series gear pump has a wide range of applications, from the highly sensitive chemicals to the corrosion of strong acid.
Components of Stainless Gear Pumpr
Rotor & shaft
There are two interlocking gears of different sizes with one rotating inside the other. The larger gear (the rotor) is an internal gear i.e. It has the teeth projecting on the inside. Within this is a smaller external gear (the idler-only the rotor is driven) mounted off-centre designed to interlock with the rotor.
Bracket
Bracket is a key component in the internal gear pump which holds the casing , bearing housing , rotor & shaft assembly and cast-in stuffing box.vikings universal seal bracket design can accommodate all kinds of standard seals and gland packing without any change in the stuffing box. Single piece brackets also ensure accurate alignment of the rotor & shaft assembly and reduce the leakage issues.
Internal rv
As internal gear pumps are positive displacement pumps , any choking or blocking in the discharge line will result as excess pressure rise which can damage the pump internal or piping etc. Internal rv or pressure safety relief valve is provided to protect the pump from excess pressure . Viking pumps are equipped with a unique feature of internal psv which is designed for 100% bypass if subjected to high pressure.
Casing
The pump casing is designed so it can be rotated on the bracket to any 45° or 90° angle for increased versatility of installation and complete selection of ports. Pump casing can be rotated in various angles permitting eight different port positions. It holds the head plate assembly and internal psv.
Idler and bushings
Idler as the name sounds is a driven gear run on an idler pin which is fitted in the head plate also known as the cover plate. Idler helps in creating the required pressure gradient while mashing in and out with the rotor.
Bearing housing
Bearing housing contains the ball / roller bearing to provide axial and radial thrust control to rotor shaft assembly. Viking unique double threaded design allows accurate fitment of the bearing and end clearance setting of the rotor.
How to Choose Stainless Gear Pumpr
When fluid moves against frictional resistance and gravity, it moves at a flow rate. It is important to determine the right pump and modify it based on pressure and flow.Pump speed determines flow rate in gear pumps and any other positive displacement pump, unlike centrifugal pumps. Fluid will deliver at a fixed rate during each revolution.Based on the flow rate, we can determine what speed we should run the pumps at. There will, however, be some slippage through the clearances, reducing the actual flow. The gear pump's volumetric efficiency still ranges from 80 to 90 percent. The amount of fluid that leaks back to the inlet port is therefore 10 to 20 percent.
External And Internal Gear Pumps
There are some design and building discrepancies between internal and external gear pumps. Trapped fluid within the gear pump teeth is pushed to the high-pressure discharge side. Compared to exterior gear designs, internal gear pumps may often suction finer.
Clearance
This way, fluid cannot escape through the outlet port (it creates a seal). In the case of metal parts rubbing against one another, there must be a gap or clearance between them. Gear clearances, peripheral clearances, and gear-to-gear clearances all allow fluid to penetrate.
he higher the viscosity of the liquid, the more slippage occurs with clearances, developed pressure, and liquid viscosity. Keeping the pump's pressure high requires a small gap of 0.0005 inches. Users should consider some essential variables when selecting and sizing gear pumps.
Liquid Temperature
As temperature rises, liquid viscosity falls. To pump liquids at higher permitted speeds they heat them frequently beforehand. On the other hand, pumps are necessary to handle liquids at low temperatures. In either scenario, considerable attention is necessary to pump construction in conditions of great heat.
Materials Of Construction
Temperature, pollution, and liquid concentration are important aspects to take into account. This is crucial when choosing the building materials in addition to the liquid itself. It is important to take into account the initial cost of the materials and replacement expenses.One must also consider the expected lifespan of the service. Cast iron, bronze, and low-carbon steel are common materials for standard pump parts. These materials are usually more affordable at first.
First cut off the power supply of the KCB stainless steel gear pump motor. After the KCB SS gear oil pumps stops, close the control valve on the discharge pipe. Disassemble the coupling on the shaft end of the KCB stainless steel gear pump. If it is found that the fit is too tight, you can gently tap it out with a copper rod or use a special remover to remove it. It is not allowed to strike hard with a hammer. After removing the coupling, remove the gland of the shaft end of the KCB stainless steel gear pump, and then remove the mechanical seal or flexible graphite ring. Remove the front cover and back cover of the KCB stainless steel gear pump, and then remove the gasket. Remove the bearing seat of the KCB stainless steel gear pump, and then take out the main and driven shaft gears. The KCB stainless steel gear pump has been disassembled.
What Precautions Should Be Taken When Using Stainless Steel Gear Pumps?
The stainless steel gear pump gear cannot be nitridated, which will mainly cause the food medium to be transported to become black.
The shaft sleeves of stainless steel gear pumps cannot use steel back composite sleeves like conventional ones. Try to choose wear-resistant materials, such as silicon carbide or zirconia ceramics.
The sealing material of stainless steel gear pump cannot choose graphite packing medium. It is necessary to choose skeleton oil seal or double-end balanced alloy mechanical seal to ensure the safety of food.
The stainless steel gear pump should be matched with gear reducer motor or variable frequency motor, stepless speed regulating motor, etc. when transporting high viscosity food medium. Try to reduce the operating speed of the stainless steel gear pump.
How Does a Gear Pump Operate?
Operate close to the maximum rated speeds
Because stainless gear pumps have poor volumetric efficiency at low speeds and low flow rates, they should be operated as close as possible to their maximum rated speeds for higher production and efficiency.
Use special materials when pumping liquids with abrasives
A stainless gear pump's toothed gear construction allows particles to become trapped in small spaces, accelerating wear and reducing efficiency. If you need to transfer fluid containing abrasives, consider contacting the pump manufacturer to discuss hardened material options.
Ensure that total life does not exceed 7.5 psi
A stainless gear pump cannot create a perfect vacuum, necessitating total lift (including pipe friction losses) to be one-half of the atmospheric pressure (approximately 7.5 psi).
Avoid low viscosity fluids
Stainless gear pumps (especially internal gear pumps) are designed to handle high viscosity fluids to minimize slip. Pumping low viscosity fluids results in reduced flow rate and efficiency because it‘slips'through the tight spaces from the higher-pressure discharge side of the pump to the lower-pressure suction side of the pump.
How to Maintain Stainless Gear Pumpr
Check for wear on the tips of the gear teeth
A new stainless gear pump has a clearance of between 0.005 inch and 0.007 inch between the gear teeth and the gear chamber wall, just enough to insert a piece of thin wrapping paper. More clearance than that indicates wear due to scrubbing against the gear chamber wall, which can occur when the pump heats up and the metal gears expand outward, or can be the result of bearing wear.
Examine all of the bearings for signs of wear
Severely worn bearings are egg-shaped and allow the gears to move around within the gear chamber. If bearings are worn, they should be replaced using a bearing puller, which is a device that uses a collet to remove bearings from inside of the bearing bore. New bearings should then be greased and replaced. Alternately, the entire bearing assembly can be replaced on some models of stainless gear pumps.
Inspect the pin that holds the gears onto their shafts
This pin prevents the gears from coming loose, and if they are sheared off they will cause the pump to stop working completely. The pin can be sheared off if a foreign object enters the pump and jams the gears or if a bearing becomes worn enough to stop rotation within the pump. If the pin is damaged or sheared off, replace the pin and thoroughly clean the inside of the gear chamber.
Examine the pump cover for bulges
Extreme pressure inside the pump, as well as a powerful blow to the drive shaft that enters the pump, can cause bulges in the pump cover, which allow liquid to bypass the pumping process (called slippage). If bulges are found, the damaged pump cover should be replaced by removing the screws that hold it in place and installing a new pump cover.
Check the pump for signs of general wear caused by improper use
If the stainless gear pump has been used to pump an abrasive liquid, the shaft may have visible scouring marks. Likewise, if the stainless gear pump has been used to pump certain chemicals not compatible with the metals that make up the components of the pump, the gears and shafts will bear etching and deterioration may be present. Thoroughly rinse the inside of the gear chamber, removing the chemicals and abrasive fluids. In severe cases where the stainless gear pump has been used to pump chemicals and abrasives for an extended period, the pump components may not be salvageable and will require replacing.
Our Factory
Jinan Hai Rui Te Mechanical CO., LTD was founded in 2005. Our talented and experienced staff can provide products with good quality, professional technical consult, and perfect service to our clients. "Keep improving " is a principle we always insist. More than sixty percent of the company staff have bachelor or higher university degrees. Now We have more than 20 patents, passed ISO9000 certification, and our products have passed CE certification. As a professinal fluid service provider, we only manufacture and sell quality products. Clients can rest assured our products and services will solve all their fluid metering problems efficiently and economically.
Certificate
