CN216566685U - Dynamic performance testing mechanism of internal gear pump - Google Patents
Dynamic performance testing mechanism of internal gear pump Download PDFInfo
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- CN216566685U CN216566685U CN202120791629.8U CN202120791629U CN216566685U CN 216566685 U CN216566685 U CN 216566685U CN 202120791629 U CN202120791629 U CN 202120791629U CN 216566685 U CN216566685 U CN 216566685U
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- gear pump
- valve plate
- internal gear
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Abstract
The utility model relates to the technical field of gear pump testing, in particular to a dynamic performance testing mechanism of an internal gear pump, which is characterized by comprising a testing valve plate, wherein the internal gear pump and a motor connecting seat are directly arranged on the testing valve plate, an oil inlet channel, an oil outlet channel and an auxiliary oil channel are arranged in the testing valve plate, the oil inlet channel is connected with an oil tank, oil is fed through a filter, the oil outlet channel is connected with a pressure gauge, a stop valve, a flowmeter and an oil return oil inlet tank, and the dynamic performance testing mechanism has the advantages that: simple structure, operate steadily, the sealed effect of test is good.
Description
Technical Field
The utility model relates to the technical field of gear pump testing, in particular to a dynamic performance testing mechanism of an internal gear pump.
Background
The internal gear pump has the advantages of stable delivery, no pulsation, low noise, small volume, long service life, capability of delivering Newtonian and non-Newtonian fluids and the like, thereby being widely applied to the industries of petroleum, chemical engineering, medical treatment, food, oil products, dye and the like. Because the rotation speed and the flow rate of the pump are in a linear function relationship, the rotation speed can be changed within a certain range and even can be used as a variable pump.
The internal gear pump is tested, transmission input is soft started to working rotating speed through a bipolar asynchronous motor and a frequency converter, the sealing linear speed is high and the pressure is high under the working rotating speed, although the linear speed of a conventional framework oil seal can be met, the pressure resistance is not enough, and a single sealing mode of high-pressure high-linear speed of parameters can be met, the actual performance parameter curve of the internal gear pump is that the pressure resistance is in inverse proportion to the linear speed, namely the linear speed is higher, the pressure resistance value is lower, and the single sealing mode meeting the working condition requirement at the same time is difficult to find; secondly, the sealing performance can be reduced due to vibration in the transmission process, so that the intermediate links need to be compressed as much as possible, the number of the mechanism functional parts is reduced as much as possible, and the structure is simple and reliable as much as possible, so that the sealing failure risk is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art and provides a dynamic performance testing mechanism of an internal gear pump.
In order to realize above-mentioned purpose, design an crescent gear pump dynamic behavior test mechanism, its characterized in that is including the test valve plate, crescent gear pump and motor connecting seat direct mount on the test valve plate, be equipped with oil inlet duct, oil outlet duct and supplementary oil duct in the test valve plate, the oil inlet duct connects the oil tank, through the filter oil feed, and manometer, stop valve, flowmeter are connected to the oil outlet duct, and the oil tank is advanced in the oil return.
Preferably, the mechanism further comprises a motor, the motor is connected with a spline shaft through a rigid coupling and drives the small gear ring to rotate relative to the large gear ring, an oil suction cavity is connected with the joint and an oil inlet tank of the high-pressure oil pipe through a test valve plate to suck oil, an O-shaped ring is arranged between the motor fixing seat and the valve plate, the spline shaft and the inner gear pump are centered by a sliding bearing and a needle roller bearing, and the dynamic seal between the spline shaft and the fixing seat is completed by a universal plug sealing ring and a Stent seal.
Compared with the prior art, the utility model has the advantages that: simple structure, operate steadily, the sealed effect of test is good.
Drawings
FIG. 1 is a schematic structural view of a crescent gear pump of the present invention;
in the figure: 1. the motor 2, the thrust ball bearing 3, the coupler 4, the O-shaped ring 5, the steckel seal 6, the motor fixing seat 7, the needle roller bearing 8, the retainer ring 9, the stopper sealing ring 10, the O-shaped ring 11, the large washer 12, the O-shaped ring 13, the valve plate 14, the rectangular sealing ring 15, the pump cover 16, the large gear ring 17, the small gear ring 18, the sliding bearing 19, the sliding bearing 20, the spline shaft 21, the O-shaped ring 22 and the end cover.
Detailed Description
The present invention is further described below in conjunction with the following drawings, the structure and principle of which will be apparent to those skilled in the art. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1, the dynamic performance testing mechanism of the internal gear pump is characterized in that the internal gear pump and a motor connecting seat are directly installed on a testing valve plate, the testing valve plate is used as an oil path block, and an oil inlet channel, an oil outlet channel and an auxiliary oil channel are machined in the valve plate. The oil inlet channel is connected with an oil tank and is used for feeding oil through the filter; the oil outlet channel is connected with a pressure gauge, a stop valve, a flowmeter and an oil return and inlet tank.
The motor passes through the rigid coupling and transmits on the integral key shaft, the relative big ring gear of drive little ring gear rotates, inhale the oil chamber and advance the oil tank through valve plate and nonstandard joint and high pressure fuel pipe and inhale the oil, the static seal between motor fixing base and the valve plate is guaranteed by O shape circle, the centering of integral key shaft and crescent gear pump relies on slide bearing, rely on bearing with the centering of motor fixing base, dynamic seal between integral key shaft and the fixing base is accomplished by general stopper sealing washer and steckel seal, general stopper sealing washer can bear the high pressure, the oil that leaks out enters into between general stopper sealing washer and the steckel seal, can balance the pressure of part general stopper sealing washer front end, the multislot structure of steckel seal also can form labyrinth seal's effect.
If other modes such as multiple sealing are adopted, the starting torque of the motor is increased due to the increase of the contact surface of the sealing element and the spline shaft, the torque of the motor at low speed is correspondingly reduced due to the soft starting of the motor by the frequency converter, and the working condition determines that a speed reducer cannot be added to increase the torque, so that the power of the motor needs to be increased to offset the lost torque, and the structure is increased and the cost is increased. The system has the advantages of simple structure, stable operation, good sealing effect through testing and capability of achieving the expected function.
Claims (2)
1. A dynamic performance testing mechanism of an internal gear pump is characterized by comprising
The testing valve plate, crescent gear pump and motor connecting seat direct mount are on the testing valve plate, be equipped with oil inlet duct, play oil duct and supplementary oil duct in the testing valve plate, oil inlet duct connects the oil tank, through the filter oil feed, and manometer, stop valve, flowmeter are connected to play oil duct, and the oil case is advanced in the oil return.
2. The dynamic performance testing mechanism of an internal gear pump as claimed in claim 1, further comprising a motor, wherein the motor is connected with a spline shaft through a rigid coupling to drive the small gear ring to rotate relative to the large gear ring, the oil suction cavity sucks oil through a testing valve plate, a joint and a high-pressure oil pipe oil inlet tank, an O-shaped ring is arranged between a motor fixing seat and the valve plate, the spline shaft and the internal gear pump are centered by a sliding bearing and a needle bearing, and the motor fixing seat is centered by a needle bearing, and the dynamic sealing between the spline shaft and the fixing seat is completed by a universal plug sealing ring and a steckel seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120791629.8U CN216566685U (en) | 2021-04-19 | 2021-04-19 | Dynamic performance testing mechanism of internal gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120791629.8U CN216566685U (en) | 2021-04-19 | 2021-04-19 | Dynamic performance testing mechanism of internal gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216566685U true CN216566685U (en) | 2022-05-20 |
Family
ID=81592672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120791629.8U Active CN216566685U (en) | 2021-04-19 | 2021-04-19 | Dynamic performance testing mechanism of internal gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216566685U (en) |
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2021
- 2021-04-19 CN CN202120791629.8U patent/CN216566685U/en active Active
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