Gear pump performance testing machine

Abstract

The utility model discloses a gear pump performance testing machine, which comprises a machine frame provided with a guide rail along the front-back direction; the test base is upwards provided with a placing groove; the interface clamping block is provided with a liquid inlet connecting hole and a liquid outlet connecting hole, and the test base can be actuated to be close to the interface clamping block; the linear driving mechanism can drive the matched clamping block to move forwards relative to the connector clamping block till the connector clamping block and the matched clamping block jointly clamp the pump body and enable the liquid inlet connecting hole and the liquid outlet connecting hole to be communicated with the liquid inlet and the liquid outlet in a sealed mode respectively. The liquid containing box is used for containing testing liquid and is communicated with the liquid inlet connecting hole through a liquid inlet pipeline. The recycling box is used for recycling the testing liquid and is communicated with the liquid outlet connecting hole through a liquid outlet pipeline. According to the testing machine, the liquid inlet connecting hole and the liquid outlet connecting hole can be respectively communicated with the liquid inlet and the liquid outlet in a sealed manner, the butt joint is tight, the sealed communication effect is realized, the leakage condition is effectively prevented, the liquid pumping flow of the gear pump is accurately obtained, and then whether the liquid pumping flow performance of the gear pump is qualified or not is tested.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pump performance testing, in particular to a gear pump performance testing machine. Background Art

[0002] A gear pump is a rotary pump that relies on the changes and movement of the working volume created between the pump cylinder and meshing gears to transport or increase pressure. When transporting or increasing pressure, liquid is drawn into the gear pump through its inlet and discharged through its outlet. During the production process, the gear pump needs to be started up for performance testing. Among these, the most important performance test item is the gear pump's flow rate performance test.

[0003] At present, when the testing machine is connected to the liquid inlet and outlet of the gear pump, leakage is likely to occur due to insufficient tightness of the connection, which affects the accuracy of the liquid flow test results. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a gear pump performance tester that can ensure the accuracy of the pumping flow rate test results.

[0005] According to the gear pump performance tester of the embodiment of the present invention, it is used to test the performance of the gear pump, and the gear pump includes a pump body and a liquid inlet and a liquid outlet arranged on the same side of the pump body, including: a frame, with a guide rail installed along the front and rear directions; a test base, slidably connected to the guide rail, the test base is provided with a placement groove facing upward, and the placement groove is suitable for positioning and placing the pump body; an interface clamp and a matching clamp are respectively located on the front and rear sides of the test base, the interface clamp is provided with a liquid inlet connection hole and a liquid outlet connection hole, and the test base can be actuated close to the interface clamp so that the liquid inlet and the liquid outlet are respectively aligned with the liquid inlet connection hole and the liquid outlet connection hole; a linear drive The mechanism is arranged on the frame, the mating clamp is arranged on the output end of the linear drive mechanism, the interface clamp is arranged on the frame or on the output end of the linear drive mechanism, and the linear drive mechanism can drive the mating clamp to move forward relative to the interface clamp until the interface clamp and the mating clamp jointly clamp the pump body and make the liquid inlet connection hole and the liquid outlet connection hole sealed and connected to the liquid inlet and the liquid outlet respectively; a liquid storage box and a recovery box are both arranged on the frame, the liquid storage box is used to hold the test liquid and connect the liquid inlet connection hole through the liquid inlet pipeline, and the recovery box is used to recover the test liquid and connect the liquid outlet connection hole through the liquid outlet pipeline.

[0006] At least the following beneficial effects are achieved: the test machine positions the pump body of the gear pump in the placement slot of the test base, the test base slides and connects to the guide rail and can be actuated close to the interface clamp, so that the liquid inlet and liquid outlet of the gear pump are respectively aligned with the liquid inlet connection hole and liquid outlet connection hole on the interface clamp, thereby achieving the effect of preliminary positioning, and then the linear drive mechanism drives the matching clamp to move forward relative to the interface clamp until the interface clamp and the matching clamp clamp jointly clamp the pump body, and the liquid inlet connection hole and liquid outlet connection hole are respectively sealed and connected to the liquid inlet and liquid outlet, and docking is achieved. The gear pump is then powered on to start the gear pump. The test liquid in the liquid storage tank can be drawn into the gear pump from the liquid inlet pipe, the liquid inlet connection hole and the liquid inlet port in sequence, and discharged to the recovery tank from the liquid outlet, the liquid outlet connection hole and the liquid outlet pipe in sequence, which can effectively prevent leakage. By calculating the time it takes for the predetermined volume of the test liquid in the liquid storage tank to decrease or the volume change of the test liquid in the liquid storage tank per unit time, the gear pumping flow rate can be accurately obtained, thereby testing whether the gear pumping flow rate performance is qualified.

[0007] According to some embodiments of the present invention, the linear drive mechanism is provided with two output ends that move synchronously in opposite directions, the mating clamp is provided on one of the output ends, and the interface clamp is provided on the other output end, and the linear drive mechanism can drive the interface clamp and the mating clamp to move toward each other in the front-rear direction, and the interface clamp drives the pump body and the test base to move backward until the interface clamp and the mating clamp jointly clamp the pump body.

[0008] According to some embodiments of the present invention, the linear drive mechanism is a bidirectional cylinder, and the two output ends are two groups of piston rods.

[0009] According to some embodiments of the present invention, a sealing gasket is installed at the rear end of the interface clamping block, and the sealing gasket is made of elastic material. The sealing gasket is provided with two connecting holes. When the interface clamping block and the mating clamping block jointly clamp the pump body, the liquid inlet connection hole is sealed and connected to the liquid inlet through one of the connecting holes, and the liquid outlet connection hole is sealed and connected to the liquid outlet through the other connecting hole.

[0010] According to some embodiments of the present invention, the sealing gasket is a rubber gasket.

[0011] According to some embodiments of the present invention, a buffer pad is installed at the front end of the mating clamp.

[0012] According to some embodiments of the present invention, the placement groove is cylindrical, and the test base is provided with a limit block on the edge of the placement groove, and the limit block is suitable for resisting the front side of the pump body and preventing the pump body from rotating around itself.

[0013] According to some embodiments of the present invention, a slider is installed at the lower end of the test base, and the test base is slidably connected to the guide rail via the slider.

[0014] According to some embodiments of the present invention, a pressure sensor is provided on the liquid outlet pipeline, and the pressure sensor is used to detect the instantaneous pressure of the test liquid in the liquid outlet pipeline.

[0015] According to some embodiments of the present invention, the test liquid is alcohol.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a structural diagram of one perspective of an embodiment of the utility model;

[0019] Figure 2 This is a structural diagram of another perspective of an embodiment of the utility model;

[0020] Figure 3 It is a partial structural diagram of an embodiment of the utility model;

[0021] Figure 4 This is an exploded schematic diagram of the interface clamp and the sealing gasket in the embodiment of the present utility model;

[0022] Figure 5 This is a schematic structural diagram of an embodiment of the utility model before the test base is actuated;

[0023] Figure 6 This is a structural diagram of an embodiment of the utility model when the test base is close to the interface clamping block;

[0024] Figure 7 This is a schematic structural diagram of an embodiment of the present utility model when the interface clamping block and the matching clamping block jointly clamp the pump body.

[0025] Figure numbers: gear pump 1, pump body 11, liquid inlet 12, liquid outlet 13, frame 2, guide rail 21, test base 3, placement groove 31, limit block 32, slider 33, interface clamp 4, liquid inlet connection hole 41, liquid outlet connection hole 42, matching clamp 5, linear drive mechanism 6, output end 61, liquid storage box 7, recovery box 8, sealing gasket 9, connecting hole 91, pressure sensor 10. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, side, end, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] Reference Figures 1 to 7 The utility model discloses a gear pump performance testing machine, which includes a frame 2, a test base 3, an interface clamping block 4, a matching clamping block 5, a linear drive mechanism 6, a liquid storage box 7 and a recovery box 8.

[0030] This testing machine is used to test the performance of the gear pump 1, including but not limited to the liquid pumping flow performance test. It can be understood that the liquid pumping flow performance test requires the gear pump 1 to be powered on and started. Therefore, this testing machine can supply power to the gear pump 1, or the gear pump 1 can be connected to an external power supply.

[0031] Reference Figure 1 and Figure 5 The gear pump 1 specifically includes a pump body 11 , a liquid inlet 12 and a liquid outlet 13 , and the liquid inlet 12 and the liquid outlet 13 are arranged on the same side of the pump body 11 .

[0032] Among them, reference Figure 3 、 Figures 5 to 7 The frame 2 is installed with a guide rail 21 along the front and rear direction, and the test base 3 is slidably connected to the guide rail 21. The tester can actuate the test base 3 to move the test base 3 back and forth on the guide rail 21. The test base 3 is provided with a placement groove 31 facing upward, and the placement groove 31 is suitable for positioning and placing the pump body 11.

[0033] Reference Figures 4 to 6The interface clamp 4 and the matching clamp 5 are respectively located on the front and rear sides of the test base 3. The interface clamp 4 is provided with a liquid inlet connection hole 41 and a liquid outlet connection hole 42. The test base 3 can be actuated close to the interface clamp 4 so that the liquid inlet 12 and the liquid outlet 13 are respectively aligned with the liquid inlet connection hole 41 and the liquid outlet connection hole 42, thereby achieving the effect of preliminary positioning of the liquid inlet 12 and the liquid inlet connection hole 41, and achieving the effect of preliminary positioning of the liquid outlet 13 and the liquid outlet connection hole 42.

[0034] Reference Figure 6 and Figure 7 The linear drive mechanism 6 is arranged on the frame 2, the matching clamp 5 is arranged on the output end 61 of the linear drive mechanism 6, and the interface clamp 4 is arranged on the frame 2 or on the output end 61 of the linear drive mechanism 6. The linear drive mechanism 6 can drive the matching clamp 5 to move forward relative to the interface clamp 4 until the interface clamp 4 and the matching clamp 5 jointly clamp the pump body 11, and make the liquid inlet connection hole 41 and the liquid outlet connection hole 42 sealed and connected to the liquid inlet 12 and the liquid outlet 13 respectively, the liquid inlet 12 is tightly docked with the liquid inlet connection hole 41, and the liquid outlet 13 is tightly docked with the liquid outlet connection hole 42, thereby achieving the effect of sealed connection.

[0035] It can be understood that the interface clamp 4 can be set on the frame 2, and the linear drive mechanism 6 drives the mating clamp 5 to move forward, while the interface clamp 4 remains stationary, so that the mating clamp 5 can move forward relative to the interface clamp 4; the mating clamp 5 can also be set on one of the output ends 61 of the linear drive mechanism 6, and the interface clamp 4 is set on the other output end 61 of the linear drive mechanism 6, one of the output ends 61 drives the mating clamp 5 to move forward, and the other output end 61 drives the interface clamp 4 to move backward, and drives the pump body 11 and the test base 3 to move backward synchronously, which can also realize the mating clamp 5 to move forward relative to the interface clamp 4.

[0036] Reference Figure 2 The liquid storage tank 7 and the recovery tank 8 are both arranged on the frame 2. The liquid storage tank 7 is used to store the test liquid and is connected to the liquid inlet connection hole 41 through the liquid inlet pipeline. The liquid storage tank 7 can quantitatively store the test liquid and can replenish the test liquid regularly. The recovery tank 8 is used to recover the test liquid and is connected to the liquid outlet connection hole 42 through the liquid outlet pipeline. The capacity of the recovery tank 8 can be designed to be larger than the capacity of the liquid storage tank 7, so there is no need to frequently empty the test liquid in the recovery tank 8.

[0037] During the test, refer to Figures 3 to 7After the gear pump 1 is started, the pump body 11 of the gear pump 1 is positioned and placed in the placement groove 31 of the test base 3. The test base 3 is slidably connected to the guide rail 21 and can be actuated close to the interface clamp 4, so that the liquid inlet 12 and the liquid outlet 13 of the gear pump 1 are respectively aligned with the liquid inlet connection hole 41 and the liquid outlet connection hole 42 on the interface clamp 4 to achieve the effect of preliminary positioning. Then the linear drive mechanism 6 drives the matching clamp 5 to move forward relative to the interface clamp 4 until the interface clamp 4 and the matching clamp 5 clamp the pump body 11 together, and make the liquid inlet connection hole 41 and the liquid outlet connection hole 42 respectively seal and connect the liquid inlet 12 and the liquid outlet 13, and the connection is tight to achieve the effect of sealing connection. Then power on and start the gear pump 1. The test liquid in the liquid storage tank 7 can be drawn into the gear pump 1 through the liquid inlet pipeline, the liquid inlet connection hole 41 and the liquid inlet 12 in turn, and discharged to the recovery tank 8 through the liquid outlet 13, the liquid outlet connection hole 42 and the liquid outlet pipeline in turn, which can effectively prevent leakage.

[0038] By calculating the time it takes for the predetermined volume of the test liquid in the liquid tank 7 to decrease or the volume change of the test liquid in the liquid tank 7 per unit time, the pumping flow rate of the gear pump 1 can be accurately obtained, and then the pumping flow rate performance of the gear pump 1 can be tested to see whether it is qualified.

[0039] In some embodiments of the present invention, referring to Figure 6 and Figure 7 The linear drive mechanism 6 is provided with two output ends 61 that move synchronously in opposite directions. The matching clamp 5 is provided on one of the output ends 61, and the interface clamp 4 is provided on the other output end 61. The linear drive mechanism 6 can drive the interface clamp 4 and the matching clamp 5 to move toward each other in the front-back direction. The interface clamp 4 drives the pump body 11 and the test base 3 to move backward synchronously until the interface clamp 4 and the matching clamp 5 jointly clamp the pump body 11, thereby realizing that the liquid inlet connection hole 41 and the liquid outlet connection hole 42 are sealed and connected to the liquid inlet 12 and the liquid outlet 13 respectively.

[0040] The linear drive mechanism 6 can specifically be a bidirectional cylinder, and the two output ends 61 are two sets of piston rods. The driving mode of the two sets of piston rods can ensure the force balance on the front and rear sides of the pump body 11, which is beneficial for the interface clamp 4 and the matching clamp 5 to jointly clamp the pump body 11, and can also effectively reduce the space occupied by the linear drive mechanism 6.

[0041] In some embodiments, reference Figure 3 and Figure 4A sealing gasket 9 is installed at the rear end of the interface clamping block 4. The sealing gasket 9 is made of elastic material and has two connecting holes 91. When the interface clamping block 4 and the matching clamping block 5 clamp the pump body 11 together, the liquid inlet connection hole 41 is sealed and connected to the liquid inlet 12 through one of the connecting holes 91, and the liquid outlet connection hole 42 is sealed and connected to the liquid outlet 13 through the other connecting hole 91. The sealing gasket 9 can effectively improve the end face sealing, prevent leakage between the liquid inlet connection hole 41 and the liquid inlet 12, and prevent leakage between the liquid outlet connection hole 42 and the liquid outlet 13.

[0042] The sealing gasket 9 can be specifically a rubber gasket, which has the properties of oil resistance, acid and alkali resistance, cold and heat resistance, and aging resistance, and further improves the end face sealing.

[0043] In order to prevent the matching clamping block 5 from damaging the pump body 11 , in some embodiments, a buffer pad is installed at the front end of the matching clamping block 5 to provide a buffering effect when the matching clamping block 5 clamps the pump body 11 .

[0044] In some embodiments, reference Figure 3 The placement groove 31 is cylindrical, matching the shape of the lower part of the pump body 11. The test base 3 is provided with a limit block 32 at the edge of the placement groove 31. The limit block 32 is suitable for resisting the front side of the pump body 11 and preventing the pump body 11 from rotating around itself, thereby realizing the positioning of the test base 3 for placing the pump body 11.

[0045] Reference Figure 3 A slider 33 can be installed at the lower end of the test base 3, and the test base 3 is slidably connected to the guide rail 21 through the slider 33 to ensure that the test base 3 slides smoothly.

[0046] Reference Figure 2 In some embodiments, a pressure sensor 10 is provided on the liquid outlet pipeline. The pressure sensor 10 is used to detect the instantaneous pressure of the test liquid in the liquid outlet pipeline, so that the instantaneous pressure performance of the gear pump 1 can be tested.

[0047] In some embodiments, the test liquid is alcohol, which is a clean liquid. After the test is completed, the alcohol remaining in the gear pump 1 can evaporate and will not contaminate the gear pump 1.

[0048] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. Gear pump performance tester, used to test the performance of a gear pump, the gear pump comprising a pump body and a liquid inlet and a liquid outlet arranged on the same side of the pump body, characterized in that: include: The rack is provided with guide rails along the front and rear directions; A test base is slidably connected to the guide rail, and the test base is provided with a placement groove upward, and the placement groove is suitable for positioning and placing the pump body; An interface clamp and a matching clamp are respectively located on the front and rear sides of the test base. The interface clamp is provided with a liquid inlet and a liquid outlet. The test base can be actuated close to the interface clamp so that the liquid inlet and the liquid outlet are respectively aligned with the liquid inlet and the liquid outlet. a linear drive mechanism, disposed on the frame, the mating clamping block disposed at an output end of the linear drive mechanism, and the interface clamping block disposed on the frame or at the output end of the linear drive mechanism, wherein the linear drive mechanism is capable of driving the mating clamping block to move forward relative to the interface clamping block until the interface clamping block and the mating clamping block jointly clamp the pump body and seal the liquid inlet and the liquid outlet holes to communicate with the liquid inlet and the liquid outlet, respectively; The liquid storage box and the recovery box are both arranged on the frame. The liquid storage box is used to store the test liquid and is connected to the liquid inlet connection hole through the liquid inlet pipe. The recovery box is used to recover the test liquid and is connected to the liquid outlet connection hole through the liquid outlet pipe.

2. The gear pump performance testing machine according to claim 1, characterized in that: The linear drive mechanism is provided with two output ends that move synchronously in opposite directions, the mating clamp is provided on one of the output ends, and the interface clamp is provided on the other output end. The linear drive mechanism can drive the interface clamp and the mating clamp to move toward each other in the front-rear direction, and the interface clamp drives the pump body and the test base to move backward until the interface clamp and the mating clamp jointly clamp the pump body.

3. The gear pump performance testing machine according to claim 2, characterized in that: The linear drive mechanism is a bidirectional cylinder, and the two output ends are two groups of piston rods.

4. The gear pump performance testing machine according to claim 1, characterized in that: A sealing gasket is installed at the rear end of the interface clamping block. The sealing gasket is made of elastic material and has two connecting holes. When the interface clamping block and the mating clamping block jointly clamp the pump body, the liquid inlet connection hole is sealed and connected to the liquid inlet through one of the connecting holes, and the liquid outlet connection hole is sealed and connected to the liquid outlet through the other connecting hole.

5. The gear pump performance testing machine according to claim 4, characterized in that: The sealing gasket is a rubber gasket.

6. The gear pump performance testing machine according to claim 1, characterized in that: A buffer pad is installed at the front end of the matching clamping block.

7. The gear pump performance testing machine according to claim 1, characterized in that: The placement groove is cylindrical, and the test base is provided with a limit stopper at the edge of the placement groove. The limit stopper is suitable for resisting the front side of the pump body and preventing the pump body from rotating around itself.

8. The gear pump performance testing machine according to claim 1 or 7, characterized in that: A slider is installed at the lower end of the test base, and the test base is slidably connected to the guide rail through the slider.

9. The gear pump performance testing machine according to claim 1, characterized in that: The liquid outlet pipeline is provided with a pressure sensor, and the pressure sensor is used to detect the instantaneous pressure of the test liquid in the liquid outlet pipeline.

10. The gear pump performance testing machine according to claim 1, characterized in that: The test liquid is alcohol.

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