A filter material performance comprehensive testing equipment

Abstract

The utility model relates to a comprehensive test device for filter material performance, including a shell, one side of which is provided with a test tank for testing filter materials, and an outer wall located on one side of the test tank is provided with an operation panel; a test fixture, which is fixedly connected to the inner bottom wall of the test tank; an oil tank group, which includes a test oil tank, a dirty oil tank and a clean oil tank arranged in the shell, wherein the upper end surfaces of the test oil tank and the dirty oil tank are flush with the inner bottom wall of the test tank, and are respectively arranged on both sides of the test fixture, and the horizontal position of the clean oil tank is higher than that of the test oil tank and the dirty oil tank. The utility model relates to the field of filter material testing technology. The comprehensive test device for filter material performance integrates the two functions of filter material flow resistance test and filter material multiple pass test in one device by arranging an oil tank group, an oil pump group and a test fixture, and adopts a highly integrated structural design. The oil tank and some pipelines, pumps, valves, etc. are shared, which reduces equipment costs, saves space, and is convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of filter material testing, in particular to a filter material performance comprehensive testing device. Background Art

[0002] The filter is an indispensable device on the pipeline for conveying media, and is usually installed at the inlet end of the pressure reducing valve, pressure relief valve, water level valve and other equipment. After the medium to be processed passes through the filter cartridge of the filter screen, its impurities are blocked. When cleaning is required, just take out the detachable filter cartridge, treat it and reinstall it. Therefore, it is extremely convenient to use and maintain.

[0003] In the existing technology, with the vigorous development of my country's engineering machinery industry, the demand for hydraulic transmission systems is also growing rapidly. As a key component of the hydraulic transmission system, the performance of the filter affects whether the hydraulic system can operate normally and the service life of the system. Therefore, the flow resistance test and the filter material multiple pass test to evaluate the performance of the filter and filter material are extremely important. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a filter material performance comprehensive testing device to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A filter material performance comprehensive testing device comprises a housing, one side of which is provided with a test slot for testing the filter material, and an outer side wall located on one side of the test slot is provided with an operation panel;

[0007] A test fixture, which is fixedly connected to the inner bottom wall of the test tank;

[0008] The oil tank group includes a test oil tank, a dirty oil tank and a clean oil tank arranged in the shell, wherein the upper end surfaces of the test oil tank and the dirty oil tank are flush with the inner bottom wall of the test tank, and are respectively arranged on both sides of the test fixture, and the horizontal position of the clean oil tank is higher than the horizontal position of the test oil tank and the dirty oil tank;

[0009] An oil pump group, which consists of a test oil pump, a dirty oil pump and a peristaltic oil pump, wherein the test oil pump connects the test oil tank with the clean oil tank, the dirty oil pump connects the dirty oil tank with the test oil tank, and the peristaltic oil pump connects the test oil tank with the dirty oil tank;

[0010] The test assembly is arranged in the test tank and connected with the test fixture.

[0011] Furthermore, two samplers are connected to the inner wall of the test tank, and the two samplers are respectively connected to the test oil tank and the dirty oil tank.

[0012] Furthermore, the inner bottom wall of the test tank is connected to a sewage injection agitator, and the stirring blades of the sewage injection agitator extend into the sewage injection oil tank.

[0013] Furthermore, two purification filters are connected inside the shell, and the two purification filters are respectively connected to the dirty oil tank and the test oil tank.

[0014] Furthermore, the test assembly includes an upstream particle counter and a downstream particle counter, and the upstream particle counter and the downstream particle counter are both fixedly connected to the inner wall of the test tank and are respectively connected to the input end and the output end of the test tooling.

[0015] Furthermore, the test oil tank, the dirty oil tank and the clean oil tank are all connected with liquid level sensors.

[0016] Furthermore, a differential pressure sensor is provided on one side of the test fixture, and two interfaces of the differential pressure sensor are respectively located at the input end and the output end of the test fixture, and the input end and the output end of the test fixture are independently provided with pressure sensors.

[0017] In summary, the present invention includes at least one of the following beneficial technical effects:

[0018] 1. This filter material performance comprehensive test equipment integrates the filter material flow resistance test and filter material multiple pass test in one device by setting up an oil tank group, an oil pump group and a test fixture, and adopts a highly integrated structural design. The oil tank and some pipelines, pumps, valves, etc. are shared, which reduces equipment costs, saves space, and is easy to operate;

[0019] 2. This filter material performance comprehensive testing equipment can be used to ensure that the cleanliness of the oil meets the test standards between filter material tests by setting up purification filters that are respectively connected to the dirty oil tank and the test oil tank. At the same time, it can filter impurities in the oil during the oil return process to avoid contamination of the oil in the clean oil tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The utility model is a structural schematic diagram of a filter material performance comprehensive testing device.

[0022] Figure 2The utility model is a front view of a filter material performance comprehensive testing device.

[0023] Figure 3 The utility model is a schematic diagram of the internal structure of a filter material performance comprehensive testing device.

[0024] Figure 4 It is a rear view of a filter material performance comprehensive testing device of the utility model.

[0025] Figure 5 The utility model is a test principle diagram of a filter material performance comprehensive test device.

[0026] In the figure, 1. test oil tank; 2. temperature sensor; 3. liquid level sensor; 4. electric stop valve; 5. Y-shaped filter; 6. test oil pump; 7. sampling valve; 8. three-way valve; 9. upstream particle counter; 10. three-way valve; 11. three-way valve; 12. back pressure valve; 13. upstream pressure sensor; 14. differential pressure sensor; 15. test piece; 16. downstream pressure sensor; 17. back pressure valve; 18. downstream particle counter; 19. three-way valve; 20. flow meter; 21. differential pressure sensor; 22. experimental purification filter; 23. one-way valve; 24. radiator; 25. heater; 26. oil return three-way valve; 27. clean oil tank; 28. liquid level sensor ; 29. ​​Stop valve; 30. Dirty oil tank oil extraction valve; 31. Test oil tank oil extraction valve; 32. Dirty oil tank; 33. Temperature sensor; 34. Liquid level sensor; 35. Electric stop valve; 36. Y-type filter; 37. Dirty oil pump; 38. Sampling port; 39. Pressure sensor; 40. Three-way valve; 41. Peristaltic oil pump; 42. Dirty injection purification filter; 43. Pressure differential switch; 44. One-way valve; 45. Heater; 46. Agitator; 47. Shell; 48. Test fixture; 49. Oil tank group; 50. Oil pump group; 51. Test assembly; 52. Test tank; 53. Operation panel; 54. Sampler; 55. Dirty injection agitator; 56. Purification filter. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] Example:

[0029] Reference Figure 1 - Figure 5 The utility model discloses a filter material performance comprehensive testing device, comprising a housing 47, one side of which is provided with a test slot 52 for testing the filter material, and an outer side wall located on one side of the test slot 52 is provided with an operation panel 53;

[0030] A test fixture 48, which is fixedly connected to the inner bottom wall of the test tank 52;

[0031] The oil tank group 49 includes a test oil tank 1, a dirty oil tank 32 and a clean oil tank 27 arranged in the housing 47, wherein the upper end surfaces of the test oil tank 1 and the dirty oil tank 32 are flush with the inner bottom wall of the test tank 52, and are respectively arranged on both sides of the test fixture 48, and the horizontal position of the clean oil tank 27 is higher than the horizontal positions of the test oil tank 1 and the dirty oil tank 32;

[0032] The oil pump group 50 is composed of a test oil pump 6, a dirty oil pump 37 and a peristaltic oil pump 41, wherein the test oil pump connects the test oil tank 1 with the clean oil tank 27, the dirty oil pump 37 connects the dirty oil tank 32 with the test oil tank 1, and the peristaltic oil pump 41 connects the test oil tank 1 with the dirty oil tank 32;

[0033] The test assembly 51 is disposed in the test slot 52 and connected to the test fixture 48 .

[0034] In this embodiment, the filter material is installed in the test fixture 48 and then tested through the operation panel 53 .

[0035] Choke test:

[0036] 1. Filling test oil tank 1: Click the test oil tank 1 filling start button on the operation panel 53 screen, then the valve between the clean oil tank 27 and the test oil tank 1 opens, and after a delay of 5 seconds, the test oil pump 6 is started to pump oil from the clean oil tank 27 to the test oil tank 1. When the liquid level in the test oil tank 1 reaches the set upper limit, the valve and the test oil pump 6 are closed, and the screen prompts that the filling is completed.

[0037] 2. Purification of test oil tank 1: Click the test oil tank 1 purification start button on the screen, then the valve between the test oil tank 1 and the purification filter 56 opens, after a delay of 5 seconds, the test oil pump 6 starts, after a delay of 3 minutes (at this time the number of particulate pollutants in the oil is basically stable, and the test results are more accurate), the sampling pump of the downstream particle counter 18 starts, and begins to detect the cleanliness of the oil. After it reaches the set value, an alarm prompt pops up on the screen. Click the reset button again to cancel the alarm. Finally, click the test oil tank 1 purification stop button, the valve and the test oil pump 6 are closed, and all execution signals stop.

[0038] 3. Operation of flow resistance test: Click the flow resistance test start button on the screen, the valve between the test oil tank 1 and the test fixture 48 opens, and after a delay of 5 seconds, the test oil pump 6 starts, and at this time, it is executed according to the set flow resistance parameters (constant operation according to each set flow value of plus or minus 0.2 liters). After 5 seconds of constant operation, the background records the flow data and pressure difference value and enters the next stage until all the set groups of values ​​are completed, and the valve and test oil pump 6 stop. At this time, the printer can be started to print out the data. If the pressure sensor detects overpressure during the test ( Figure 5The upper limit value of the upstream pressure sensor 13 in the figure) is reached, the system stops automatically and the screen prompts that the test is terminated to prevent the system from being damaged due to overpressure.

[0039] 4. Start the oil return of test oil tank 1: Click the "Oil Tank Control" button on the screen, and then click the "Start" button for the oil return of test oil tank 1. The oil return pipeline between the test oil tank 1 and the clean oil tank 27 is connected. The test oil pump 6 starts after a delay of 5 seconds. When the liquid level of the test oil tank 1 reaches the low level, all actuators stop automatically, completing the flow resistance test of the filter material.

[0040] Multiple pass tests:

[0041] 1. Filling test oil tank 1: Click the test oil tank 1 filling start button on the operation panel 53 screen, then the valve between the clean oil tank 27 and the test oil tank 1 opens, and after a delay of 5 seconds, the test oil pump 6 is started to pump oil from the clean oil tank 27 to the test oil tank 1. When the liquid level in the test oil tank 1 reaches the set upper limit, the valve and the test oil pump 6 are closed, and the screen prompts that the filling is completed.

[0042] 2. Purification of test oil tank 1: Click the test oil tank 1 purification start button on the screen, then the valve between the test oil tank 1 and the purification filter 56 opens, after a delay of 5 seconds, the test oil pump 6 starts, after a delay of 3 minutes (at this time the number of particulate pollutants in the oil is basically stable, and the test results are more accurate), the sampling pump of the downstream particle counter 18 starts, and begins to detect the cleanliness of the oil. After it reaches the set value, an alarm prompt pops up on the screen. Click the reset button again to cancel the alarm. Finally, click the test oil tank 1 purification stop button, the valve and the test oil pump 6 are closed, and all execution signals stop.

[0043] 3. Oil filling of dirty oil tank 32 (used for filling of polluted particles in multiple-pass tests): Click the dirty oil tank 32 oil filling start button on the screen, the valve connecting the dirty oil tank 32 and the clean oil tank 27 opens, and after a delay of 5 seconds, the dirty oil pump 37 starts to pump oil from the clean oil tank 27 to the dirty oil tank 32. When the liquid level of the dirty oil tank 32 reaches the set upper limit, the valve and dirty oil pump 37 are closed, and the screen prompts that the oil filling is completed.

[0044] 4. Purification of the dirty oil tank 32: Click the dirty oil tank 32 purification start button on the screen, the valve between the dirty oil tank 32 and the purification filter 56 opens, and after a delay of 5 seconds, the dirty oil pump 37 starts to allow the oil to pass through the purification filter 56. After the oil cleanliness reaches the set value, the purification ends, the equipment automatically stops, the valve and the dirty oil pump 37 are closed, all execution signals stop, and the screen prompts that the purification is over.

[0045] 5. Addition and dilution of test powder: Add the test powder into the dirty injection oil tank 32, start the dirty injection agitator 55, and after running for 20 minutes, turn off the dirty injection agitator 55.

[0046] 6. Operation of multiple-pass test: Load the filter material to be tested into the test fixture 48, click the multiple-pass test start button on the screen, open the valve between the test oil tank 1 and the test fixture 48, start the test oil pump 6, and record the assembly pressure difference value after the flow and pressure difference are stable. At this time, the filter material test pressure difference value is calculated (equal to the assembly pressure difference value minus the fixture pressure difference value). The upstream particle counter 9 and the downstream particle counter 18 start detection 3 minutes after the test is started, and the alarm prompts after the oil cleanliness reaches the set value. Then click the reset button to cancel the alarm. At this time, start the peristaltic oil pump 41 to input the oil in the dirty oil tank 32 into the test oil tank 1 to maintain the turbidity of the oil in the test oil tank 1. When the filter material to be tested reaches 80% of the test pressure difference, 100 ml is sampled through the sampler 54 upstream of the test pipeline for weight contamination analysis. When the filter material to be tested reaches the test pressure difference, the test ends, the equipment automatically stops, the valve and the test oil pump 6 are closed, and the screen prompts that the test is terminated.

[0047] 7. Start the oil return of the test oil tank 1: Click the "Oil Tank Control" button on the screen, and then click the "Start" button for the oil return of the test oil tank 1. The valve between the test oil tank 1 and the clean oil tank 27 opens. After a delay of 5 seconds, the test oil pump 6 starts to input the oil in the test oil tank 1 into the clean oil tank 27. When the liquid level in the test oil tank 1 reaches the low liquid level of the test tank, all actuators stop automatically.

[0048] 8. Start the oil return to the dirty oil tank 32: Click the "Oil Tank Control" button on the screen, and then click the "Start" button for the oil return to the dirty oil tank 32. The valve between the dirty oil tank 32 and the clean oil tank 27 opens. After a delay of 5 seconds, the dirty oil pump 37 starts to input the oil in the dirty oil tank 32 into the clean oil tank 27. When the liquid level in the dirty oil tank 32 reaches the low liquid level of the dirty tank, all actuators stop automatically, completing the multiple pass test of the filter material.

[0049] In a further preferred embodiment of the present invention, Figure 3 As shown, two samplers 54 are connected to the inner wall of the test tank 52 , and the two samplers 54 are connected to the test oil tank 1 and the dirty oil tank 32 respectively.

[0050] In this embodiment, through two samplers 54 respectively connected to the test oil tank 1 and the dirty oil tank 32, the oil in the test oil tank 1 and the dirty oil tank 32 can be sampled respectively, which can be used to detect the oil during the filter material test, thereby further improving the accuracy of the filter material test.

[0051] In a further preferred embodiment of the present invention, Figure 3As shown, the inner bottom wall of the test tank 52 is connected to a sewage injection agitator 55 , and the stirring blades of the sewage injection agitator 55 extend into the sewage injection oil tank 32 .

[0052] In this embodiment, a dirty injection stirrer 55 is provided to uniformly mix the test powder injected into the dirty injection oil tank 32 in the dirty injection oil tank 32, thereby further ensuring the accuracy of the test data of the filter material passing the test multiple times.

[0053] In a further preferred embodiment of the present invention, Figure 3 and Figure 4 As shown, two purification filters 56 are connected inside the housing 47 , and the two purification filters 56 are connected to the dirty oil tank 32 and the test oil tank 1 respectively.

[0054] In this embodiment, the purification filter 56 connected to the dirty oil tank 32 and the test oil tank 1 respectively can be used to ensure that the cleanliness of the oil meets the test standards between filter material tests. At the same time, impurities in the oil can be filtered during the oil return process to prevent the oil in the clean oil tank 27 from being contaminated.

[0055] In a further preferred embodiment of the present invention, Figure 2 As shown, the test assembly 51 includes an upstream particle counter 9 and a downstream particle counter 18 , and the upstream particle counter 9 and the downstream particle counter 18 are both fixedly connected to the inner wall of the test tank 52 and are respectively connected to the input end and the output end of the test fixture 48 .

[0056] In this embodiment, by providing the upstream particle counter 9 and the downstream particle counter 18, the particles in the oil can be detected during the filter material test, which can further improve the accuracy of the test.

[0057] In a further preferred embodiment of the present invention, Figure 3 and Figure 5 As shown, the test oil tank 1, the dirty oil tank 32 and the clean oil tank 27 are all connected with liquid level sensors.

[0058] In this embodiment, the liquid level sensor is set to avoid oil overflow when filling the dirty oil tank 32 and the test oil tank 1. It can also avoid the oil pump group 50 being damaged when the oil level in the dirty oil tank 32, the clean oil tank 27 and the test oil tank 1 is low.

[0059] In a further preferred embodiment of the present invention, Figure 3 and Figure 5As shown, a differential pressure sensor is disposed on one side of the test fixture 48 , and two interfaces of the differential pressure sensor are respectively located at the input end and the output end of the test fixture 48 , and the input end and the output end of the test fixture 48 are independently provided with pressure sensors.

[0060] In this embodiment, the pressure difference sensor and the pressure sensor can be used to detect the pressure during the filter material test to prevent the filter material from being damaged due to overpressure.

[0061] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A filter material performance comprehensive testing device, characterized in that: It comprises a housing (47), one side of which is provided with a test slot (52) for testing filter materials, and an outer side wall located on one side of the test slot (52) is provided with an operation panel (53); A test fixture (48) fixedly connected to the inner bottom wall of the test tank (52); An oil tank assembly (49) comprises a test oil tank (1), a dirty oil tank (32) and a clean oil tank (27) arranged in a housing (47), wherein the upper end surfaces of the test oil tank (1) and the dirty oil tank (32) are flush with the inner bottom wall of the test tank (52), and are respectively arranged on both sides of the test fixture (48), and the horizontal position of the clean oil tank (27) is higher than the horizontal positions of the test oil tank (1) and the dirty oil tank (32); An oil pump group (50) is composed of a test oil pump (6), a dirty oil pump (37) and a peristaltic oil pump (41), wherein the test oil pump connects the test oil tank (1) with the clean oil tank (27), the dirty oil pump (37) connects the dirty oil tank (32) with the test oil tank (1), and the peristaltic oil pump (41) connects the test oil tank (1) with the dirty oil tank (32); A test assembly (51) is arranged in a test slot (52) and connected to a test fixture (48).

2. A filter material performance comprehensive testing device according to claim 1, characterized in that: Two samplers (54) are connected to the inner side wall of the test tank (52), and the two samplers (54) are respectively connected to the test oil tank (1) and the dirty oil tank (32).

3. A filter material performance comprehensive testing device according to claim 1, characterized in that: The inner bottom wall of the test tank (52) is connected to a sewage injection agitator (55), and the stirring blades of the sewage injection agitator (55) extend into the sewage injection oil tank (32).

4. A filter material performance comprehensive testing device according to claim 1, characterized in that: Two purification filters (56) are connected inside the housing (47), and the two purification filters (56) are respectively connected to the dirty oil tank (32) and the test oil tank (1).

5. A filter material performance comprehensive testing device according to claim 1, characterized in that: The test assembly (51) comprises an upstream particle counter (9) and a downstream particle counter (18), wherein the upstream particle counter (9) and the downstream particle counter (18) are both fixedly connected to the inner wall of the test tank (52) and are respectively connected to the input end and the output end of the test fixture (48).

6. A filter material performance comprehensive testing device according to claim 1, characterized in that: The test oil tank (1), the dirty oil tank (32) and the clean oil tank (27) are all connected with liquid level sensors.

7. A filter material performance comprehensive testing device according to claim 1, characterized in that: A differential pressure sensor is provided on one side of the test fixture (48), and two interfaces of the differential pressure sensor are respectively located at the input end and the output end of the test fixture (48), and the input end and the output end of the test fixture (48) are both independently provided with pressure sensors.

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