Although friends who have not been exposed to the production technology in the first-line field may not know much about gear pumps, their role is crucial for professionals. So let's learn about Bian Xiao today. I mainly recommend examples of gear pump models and principles, from which we can know that this kind of products can help the movement through the cooperation of two gears with the same size, and the choice of various sizes and specifications further provides rich solutions, which is of interest.

First, the principle of gear pump

External gear pump is the most widely used gear oil pump, and general gear pump usually refers to external gear pump. Its structure is shown in Figure 5? As shown in-14, it is mainly composed of driving gear, driven gear, pump body, pump cover and safety valve. The sealed space composed of pump body, pump cover and gear is the working room of gear pump. The shafts of the two gears are respectively installed in the bearing holes on the two pump covers, and the driving gear shaft extends out of the pump body and is driven by the motor to rotate. External gear pump has the advantages of simple structure, light weight, low cost, reliable operation and wide application range.

When the gear pump works, the driving wheel rotates with the motor and drives the driven wheel to rotate with it. When the meshing teeth on one side of the suction cavity are gradually separated, the volume of the suction cavity increases and the pressure decreases, so that the liquid in the suction tube is sucked into the pump; Suction liquid is pushed to the discharge chamber by the gear in the tooth slot in two ways. After the liquid enters the discharge chamber, due to the continuous meshing of the teeth of the two gears, the liquid is squeezed and enters the discharge pipe from the discharge chamber. When the driving gear and the driven gear keep rotating, the pump can continuously suck and discharge liquid.

The pump body is equipped with a safety valve. When the discharge pressure exceeds the specified pressure, the conveying liquid can automatically open the safety valve and return the high-pressure liquid to the suction pipe.

Second, the gear pump model

CBN-E3？ RF gear pump model meaning:

1 and CB indicate the name of the gear pump.

2, n represents the design code of gear pump. The design code also includes KSN.

3, e represents the pressure level.

4 and 3 denote gear pump modules, which are divided into 1, 2, 3, 4 and 5.

5,00 represents the nominal displacement, which is generally 0.6 ml/r-63 ml/r. 。

6. R stands for flange installation form. O is a diamond, r is a distance and s is a square.

7.f indicates the form of oil port. F stands for flange, T stands for special, and L stands for thread.

8.⊿ indicates the form of axial extension. B stands for flat mouth, H stands for spline, Y stands for cone and P stands for single bond.

9, n indicates the direction of rotation. L is the left hand, R is the right hand, and T is a two-way rotation.

Through CBN-E3? The meaning of RF letters is analyzed. I believe everyone understands the model meaning of gear pump, and the purchase will be smoother in the future.

For example, gear pump is a widely used product, which is composed of two gears with different sizes and specifications. It can not only play a control role, but also be used to transport liquid, thus helping to improve production efficiency and avoiding the trouble and time loss caused by manual operation. So what is explained above is the introduction of related similar basic chapters. Including principle analysis and classification description, interested friends can refer to it, hoping to receive satisfactory results and solutions.