Detection table suitable for motor gear pump

Abstract

The utility model discloses a detection bench suitable for a motor gear pump, comprising a work bench, the work bench is fixedly provided with a motor, an oil tank and a pressure measuring assembly, the output end of the motor is connected with a gear pump to be measured, the oil tank is arranged at one side of the motor and is communicated with an oil inlet of the gear pump through an oil inlet pipe, and the pressure measuring assembly is connected with the oil tank. The pressure measuring assembly is located on the other side of the motor and communicated with an oil outlet of the gear pump through the oil outlet assembly, the pressure measuring assembly is provided with an oil return pipe communicated with the oil tank, and the oil outlet assembly comprises a filter box for filtering hydraulic oil. Compared with the prior art, the hydraulic oil residue filtering device has the advantages that residues in recycled hydraulic oil can be filtered, and the situation that the measurement accuracy is affected due to the fact that the moving part of the residues along with the hydraulic oil is attached to an oil pipe or a control valve is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pumps, in particular to a detection bench adapted to motor gear pumps. Background Art

[0002] A gear pump consists of two gears, a pump body and front and rear covers to form two closed spaces. When the gears rotate, the volume of the space on the side where the gears disengage increases from small to large, forming a vacuum to suck in the liquid, and the volume of the space on the side where the gears mesh decreases from large to small to squeeze the liquid into the pipeline. If the technical indicators of the gear pump do not meet the requirements after production and it is sold to customers, it will directly affect the credibility of the enterprise. Moreover, when the gear pump malfunctions during operation, it is also necessary to detect the technical indicators of the gear pump. Therefore, gear pump detection devices have emerged on the market.

[0003] In the existing gear pump detection devices, there is residual oil from gear pump leakage on the workbench, and the residual oil is recycled into the fuel tank without treatment. At the same time, when the detection device detects a used gear pump, there may be residues in the gear pump. The residues will enter the fuel tank along with the hydraulic oil through the pipeline and control valve. After long-term use of the gear pump detection device, the parts where the residues move with the hydraulic oil will adhere to the oil pipe or control valve, thus affecting the measurement accuracy. Content of the Utility Model

[0004] Aiming at the problems that the residual oil on the workbench of the gear pump detection device and the residues carried in the used gear pump enter the fuel tank along with the hydraulic oil through the pipeline and control valve, and the parts where the residues move with the hydraulic oil will adhere to the oil pipe or control valve, affecting the measurement accuracy, the technical problem to be solved by the utility model is to provide a detection bench adapted to motor gear pumps to solve the above problems.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows: A detection bench adapted to motor gear pumps includes a workbench, on which an electric motor, a fuel tank and a pressure measurement component are fixedly arranged. The output end of the electric motor is connected to the gear pump to be tested. The fuel tank is arranged on one side of the electric motor and is communicated with the oil inlet of the gear pump through an oil inlet pipe. The pressure measurement component is located on the other side of the electric motor and is communicated with the oil outlet of the gear pump through an oil outlet component. The pressure measurement component is provided with a return oil pipe communicated with the fuel tank. The oil outlet component includes a filter tank for filtering the hydraulic oil. When the electric motor drives the gear pump to work, the hydraulic oil in the fuel tank enters the gear pump through the oil inlet pipe, is pressurized by the electric motor and then enters the oil outlet component from the oil outlet of the gear pump. The filter tank of the oil outlet component filters the pressurized hydraulic oil and then flows into the pressure measurement component. By reading the pressure value on the pressure measurement component, it is judged whether the gear pump is qualified.

[0006] A further preferred solution of the present utility model is as follows: The filtration tank is arranged on the workbench. The oil outlet assembly further includes a first oil outlet pipe and a second oil outlet pipe. One end of the first oil outlet pipe is hermetically communicated with the oil outlet of the gear pump, and the other end is hermetically connected to the oil inlet end of the filtration tank. One end of the second oil outlet pipe is hermetically connected to the oil outlet end of the filtration tank, and the other end is hermetically communicated with the pressure measurement assembly.

[0007] A further preferred solution of the present utility model is as follows: A sealed circuit is formed among the fuel tank, the oil inlet pipe, the gear pump, the oil outlet assembly, the detection assembly, and the oil return pipe.

[0008] A further preferred solution of the present utility model is as follows: The pressure measurement assembly includes a control valve and a pressure gauge arranged on the control valve. An operation handle for opening or closing the control valve is arranged on the control valve.

[0009] A further preferred solution of the present utility model is as follows: A quick fixing clip is arranged on the workbench. The quick fixing clip has a handle. By rotating the handle, the quick fixing clip can be abutted against the motor to fix the motor.

[0010] A further preferred solution of the present utility model is as follows: The workbench has a concave installation groove, and the motor is arranged in the installation groove.

[0011] A further preferred solution of the present utility model is as follows: A separate oil collecting groove is arranged on one side of the installation groove close to the gear pump. An oil collecting hole is arranged in the oil collecting groove. A collecting oil pipe is connected to the oil collecting hole. One end of the collecting oil pipe is communicated with the oil collecting hole, and the other end is communicated with the fuel tank. An oil suction pump and a valve for controlling the oil suction pump are arranged on the collecting oil pipe.

[0012] A further preferred solution of the present utility model is as follows: The bottom of the oil collecting groove slopes downward along the direction of the oil collecting hole, and the oil collecting hole is located at the lowest point of the bottom of the oil collecting groove.

[0013] A further preferred solution of the present utility model is as follows: A filter screen is arranged on the oil collecting hole.

[0014] A further preferred solution of the present utility model is as follows: A power switch connected to the power supply is arranged on the side wall of the workbench. A wiring terminal connected to the power supply is arranged on the workbench. The motor is connected to the wiring terminal through a power cord.

[0015] Compared with the prior art, the present utility model has the following advantages. By arranging a filtration tank on the oil outlet assembly, not only can newly produced gear pumps be detected, but also used gear pumps can be detected. When detecting a used gear pump, if there are residues in the gear pump, the filtration tank can filter them out to prevent the residues from entering the fuel tank along with the hydraulic oil through the pipeline and the control valve. The gear pump detection device uses the circulating oil in the fuel tank for a long time, and part of the residues moving with the hydraulic oil will adhere to the oil pipe or the control valve, thus affecting the measurement accuracy. Brief Description of the Drawings

[0016] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0017] Figure 1 One of the three-dimensional structure schematic diagrams of the preferred embodiment of the present utility model;

[0018] Figure 2 Two of the three-dimensional structure schematic diagrams of the preferred embodiment of the present utility model;

[0019] Figure 3 The front view of the preferred embodiment of the present utility model.

[0020] In the figure: 1, workbench; 11, installation groove; 12, oil collecting groove; 13, oil collecting hole; 14, oil collecting pipe; 141, oil suction pump; 142, valve; 15, filter screen; 2, motor; 3, fuel tank; 4, oil inlet pipe; 5, gear pump; 51, oil inlet; 52, oil outlet; 6, oil outlet assembly; 61, filter box; 62, first oil outlet pipe; 63, second oil outlet pipe; 7, pressure measuring assembly; 71, control valve; 72, pressure gauge; 73, operating handle; 8, return oil pipe; 9, quick fixing clip; 10, power switch. Detailed Description of the Preferred Embodiment

[0021] The preferred embodiments of the present utility model will be described in detail below with reference to the drawings. Those skilled in the art will understand that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present utility model.

[0022] It should be noted that: similar reference numerals denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0023] This embodiment mainly describes a detection bench adapted to a motor gear pump, specifically as follows:

[0024] As Figures 1 to 3As shown in the figure, a test bench adapted to a motor gear pump includes a workbench 1, which mainly serves as a support. A motor 2, a fuel tank 3, and a pressure measuring assembly 7 are fixedly arranged on the workbench 1. The output end of the motor 2 is connected to the gear pump 5 to be tested, and the motor 2 provides power for the gear pump 5. The fuel tank 3 is arranged on one side of the motor 2. An oil inlet pipe 4 is arranged between the fuel tank 3 and the gear pump 5. The gear pump 5 is provided with an oil inlet 51 and an oil outlet 52. One end of the pipe is communicated with the fuel tank 3, and the other end is communicated with the oil inlet 51 and fixed by screws. The pressure measuring assembly 7 is located on the other side of the motor 2. An oil outlet assembly 6 is arranged between the pressure measuring assembly 7 and the gear pump 5. One end of the oil outlet assembly 6 is communicated with the oil outlet 52 of the gear pump 5 and fixed by screws, and the other end of the oil outlet assembly 6 is communicated with the pressure measuring assembly 7. The pressure measuring assembly 7 is used to measure the pressure of the hydraulic oil after being pressurized by the gear pump 5. The pressure measuring assembly 7 is provided with a return oil pipe 8 communicated with the fuel tank 3. The oil outlet assembly 6 includes a filter tank 61 for filtering the hydraulic oil. A sealed circuit is formed among the fuel tank 3, the oil inlet pipe 4, the gear pump 5, the oil outlet assembly 6, the detection assembly, and the return oil pipe 8. When the motor 2 drives the gear pump 5 to work, the hydraulic oil in the fuel tank 3 enters the gear pump 5 through the oil inlet pipe 4, is pressurized by the drive of the motor 2, and then enters the oil outlet assembly 6 from the oil outlet 52 of the gear pump 5. The filter tank 61 of the oil outlet assembly 6 filters the pressurized hydraulic oil and then flows into the pressure measuring assembly 7. By reading the pressure value on the pressure measuring assembly 7, it can be judged whether the gear pump 5 meets the standard. The test bench of this solution can not only detect newly produced gear pumps 5, but also detect gear pumps 5 that have failed during use. By setting a filter tank 61 on the oil outlet assembly 6, when detecting a used gear pump 5, if there are residues in the gear pump 5, the filter tank 61 can filter them out to prevent the residues from entering the fuel tank 3 along with the hydraulic oil through the pipeline and the control valve 71. The gear pump 5 detection device uses the circulating oil in the fuel tank 3 for a long time, and part of the residues moving with the hydraulic oil will adhere to the oil pipe or the control valve 71, thus affecting the measurement accuracy.

[0025] Specifically, the filter tank 61 is arranged on the workbench 1. The oil outlet assembly 6 further includes a first oil outlet pipe 62 and a second oil outlet pipe 63. One end of the first oil outlet pipe 62 is hermetically communicated with the oil outlet 52 of the gear pump 5, and the other end is hermetically connected to the oil inlet end of the filter tank 61. One end of the second oil outlet pipe 63 is hermetically connected to the oil outlet end of the filter tank 61, and the other end is hermetically communicated with the pressure measuring assembly 7. When the hydraulic oil is pressurized by the gear pump 5, the pressurized hydraulic oil flows into the filter tank 61 through the first oil outlet pipe 62 to filter the hydraulic oil, and the filtered hydraulic oil flows into the pressure measuring assembly 7 through the second oil outlet pipe 63 to measure the pressure of the hydraulic oil.

[0026] Specifically, the pressure measuring assembly 7 includes a control valve 71 and a pressure gauge 72 provided on the control valve 71. An operating handle 73 for opening or closing the control valve 71 is provided on the control valve 71. When the motor 2 operates, it drives the gear pump 5 to suck hydraulic oil. The hydraulic oil is pressurized by the gear pump 5 to obtain high-pressure oil. The high-pressure oil passes through the control valve 71 and the pressure of the hydraulic oil is displayed by the pressure gauge 72. If the pressure is greater than or equal to the specified pressure value, it means that the gear pump 5 meets the quality standard and can be sold on the market after leaving the factory. If the pressure is less than the specified pressure value, it means that the quality of the gear pump 5 does not meet the standard and it cannot be sold after leaving the factory. After the motor 2 drives the gear pump 5 to work properly, the handle can be used to conduct a pressure test for a period of time to observe whether there are abnormal noises or other quality problems with the motor 2, and also to observe whether the gear pump 5 leaks oil or has other quality problems.

[0027] Specifically, the motor 2 is fixed on the workbench 1 by screws. A quick fixing clamp 9 is provided on the workbench 1. The quick fixing clamp 9 has a handle. By turning the handle, the quick fixing clamp 9 can be abutted against the motor 2 to fix the motor 2, preventing the motor 2 from shifting due to vibration during operation and affecting the user experience.

[0028] Specifically, the workbench 1 has a concave installation groove 11. The motor 2 is fixed in the installation groove 11 by screws. An oil collecting groove 12 independent of the installation groove 11 is provided on one side of the installation groove 11 close to the gear pump 5. The oil collecting groove 12 is used to collect the oil leaked from the gear pump 5 to recycle the hydraulic oil. An oil collecting hole 13 is provided in the oil collecting groove 12. The bottom of the oil collecting groove 12 slopes downward along the direction of the oil collecting hole 13. The oil collecting hole 13 is located at the lowest point of the bottom of the oil collecting groove 12. A collecting oil pipe 14 is connected to the oil collecting hole 13. One end of the collecting oil pipe 14 is communicated with the oil collecting hole 13, and the other end is communicated with the fuel tank 3. An oil suction pump 141 and a valve 142 for controlling the oil suction pump 141 are provided on the collecting oil pipe 14. When it is detected that some gear pumps 5 leak oil, the leaked oil enters the oil collecting groove 12, flows into the collecting oil pipe 14 through the oil collecting hole 13 of the oil collecting groove 12, and the valve 142 is opened. Under the action of the oil suction pump 141, the leaked hydraulic oil returns to the fuel tank 3 again. The design of the oil collecting groove 12 can recycle the leaked hydraulic oil and reduce the oil consumption cost.

[0029] Specifically, a filter screen 15 is provided on the oil collecting hole 13. The setting of the filter screen 15 can filter the hydraulic oil to be recycled to prevent impurities or garbage in the oil collecting groove 12 from entering the fuel tank 3 along with the collected hydraulic oil.

[0030] Specifically, a power switch 10 connected to the power supply is provided on the side wall of the workbench 1. A terminal connected to the power supply is provided on the workbench 1. The motor 2 is connected to the terminal through a power cord. When it is necessary to start the motor 2, pressing the power switch 10 can start the motor 2.

[0031] Working principle: Start the motor 2. The motor 2 drives the gear pump 5 to suck hydraulic oil. After the hydraulic oil is pressurized by the gear pump 5, it flows into the first oil outlet pipe 62, and the pressurized hydraulic oil is filtered by the filter box 61. The filtered hydraulic oil passes through the second oil outlet pipe 63 through the control valve 71. The pressure gauge 72 on the control valve 71 measures the pressure of the hydraulic oil pressurized by the gear pump 5. By reading the value on the pressure gauge 72, it can be judged whether the gear pump 5 is qualified. By pressing the handle for a period of time, it can be observed whether there is abnormal noise or other quality problems with the motor 2, and it can also be observed whether the gear pump 5 leaks oil or has other quality problems.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0033] The above has introduced in detail the detection platform adapted to the motor gear pump provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the present invention and its core idea. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A test bench adapted for a motor gear pump, comprising a workbench, on which a motor, an oil tank and a pressure measuring assembly are fixedly arranged, the output end of the motor is connected to the gear pump to be tested, the oil tank is arranged on one side of the motor and communicated with the oil inlet of the gear pump through an oil inlet pipe, the pressure measuring assembly is located on the other side of the motor and communicated with the oil outlet of the gear pump through an oil outlet assembly, the pressure measuring assembly is provided with an oil return pipe communicated with the oil tank, and is characterized in that: The oil outlet component includes a filter box for filtering the hydraulic oil. When the motor drives the gear pump to work, the hydraulic oil in the oil tank enters the gear pump through the oil inlet pipe, is pressurized by the motor, and then enters the oil outlet component from the gear pump oil outlet. The filter box of the oil outlet component filters the pressurized hydraulic oil and then flows into the pressure measuring component. The pressure value on the pressure measuring component is read to determine whether the gear pump is qualified.

2. The detection platform adapted to the motor gear pump according to claim 1, characterized in that: The filter box is arranged on a workbench, and the oil outlet assembly also includes a first oil outlet pipe and a second oil outlet pipe. One end of the first oil outlet pipe is sealed and connected to the oil outlet of the gear pump, and the other end is sealed and connected to the oil inlet end of the filter box. One end of the second oil outlet pipe is sealed and connected to the oil outlet end of the filter box, and the other end is sealed and connected to the pressure measuring assembly.

3. The detection platform adapted to the motor gear pump according to claim 1, characterized in that: A sealed loop is formed between the oil tank, the oil inlet pipe, the gear pump, the oil outlet assembly, the detection assembly and the oil return pipe.

4. The detection platform adapted to the motor gear pump according to claim 1, characterized in that: The pressure measuring assembly comprises a control valve and a pressure gauge arranged on the control valve, and the control valve is provided with an operating handle for opening or closing the control valve.

5. The detection platform adapted to the motor gear pump according to claim 1, characterized in that: The workbench is provided with a quick fixing clamp, which has a handle. The quick fixing clamp can be pressed against the motor to fix the motor by rotating the handle.

6. The detection platform adapted to the motor gear pump according to claim 1, characterized in that: The workbench is provided with a concave installation groove, and the motor is arranged in the installation groove.

7. The detection platform adapted to the motor gear pump according to claim 6, characterized in that: An oil collecting groove independent of the mounting groove is provided on one side of the mounting groove close to the gear pump. An oil collecting hole is provided in the oil collecting groove. An oil collecting pipe is connected to the oil collecting hole. One end of the oil collecting pipe is connected to the oil collecting hole, and the other end is connected to the oil tank. An oil suction pump and a valve for controlling the oil suction pump are provided on the oil collecting pipe.

8. The detection platform adapted to the motor gear pump according to claim 7, characterized in that: The bottom of the oil collecting tank is inclined downward along the direction of the oil collecting hole, and the oil collecting hole is located at the lowest point of the bottom of the oil collecting tank.

9. The detection platform adapted to the motor gear pump according to claim 7, characterized in that: A filter screen is arranged on the oil collecting hole.

10. The detection platform adapted to the motor gear pump according to claim 1, characterized in that: A power switch connected to the power supply is arranged on the side wall of the workbench, a terminal connected to the power supply is arranged on the workbench, and the motor is connected to the terminal via a power line.

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