Filter element detection device

Abstract

The utility model provides a filter element detection device. The filter element detection device comprises an air supply system and a detection system, the gas supply system is communicated with the surge tank; the filter element detection module is provided with a filter element containing cavity, an air inlet and an air outlet, the filter element containing cavity is communicated with the air inlet and the air outlet, the filter element containing cavity is used for containing a filter element, the air inlet is communicated with the surge tank, and the air outlet is provided with a first flow meter. According to the filter element detection device disclosed by the utility model, gas with stable gas pressure can be provided for the filter element detection module through the gas supply system and the surge tank, so that the flow stability of the exhaust port of the filter element detection module is ensured; whether the filter element meets the use requirement of the vacuum pump or not can be detected through the filter element detection module so that the filter element can be replaced in time, stable nitrogen flow of the vacuum pump can be guaranteed, meanwhile, the vacuum degree of the vacuum pump is guaranteed, shaft seal failure in the vacuum pump is avoided, products are prevented from entering an oil tank to pollute lubricating oil, and the service life of the vacuum pump is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of testing tooling technology, specifically relating to a filter element testing device. Background Technology

[0002] During operation, a vacuum pump needs to continuously supply nitrogen gas into the pump body to maintain the internal pressure balance. Supplying nitrogen gas into the pump body can also dilute corrosive gases, reduce the contamination of the oil tank by finished products, and thus extend the service life of the vacuum pump.

[0003] Vacuum pumps contain a filter element that filters nitrogen gas entering the pump. However, in related technologies, the filter element within a vacuum pump is difficult to inspect, making it difficult to determine its gas flow rate. This can lead to excessively high or low nitrogen flow rates, affecting the vacuum level, causing shaft seal failure, allowing manufactured products to enter the oil tank and contaminate the lubricating oil, and reducing the pump's lifespan. Therefore, there is an urgent need for a filter element inspection device to detect its gas flow rate. Utility Model Content

[0004] The embodiments disclosed herein are intended to at least address one of the technical problems existing in the prior art, and to provide a filter cartridge testing device.

[0005] Embodiments of this disclosure provide a filter cartridge testing device, the filter cartridge testing device comprising:

[0006] Gas supply system;

[0007] A pressure stabilizing tank, and the gas supply system is connected to the pressure stabilizing tank;

[0008] A filter element detection module has a detection unit, which includes a filter element receiving cavity, an air inlet, and an exhaust port. The filter element receiving cavity is connected to the air inlet and the exhaust port, respectively. The filter element receiving cavity is used to receive the filter element. The air inlet is connected to the pressure stabilizing tank. The exhaust port is equipped with a first flow meter.

[0009] In some embodiments of this disclosure, the filter element detection module includes a housing, on which at least two sets of detection units are formed. Each set of detection units includes an air inlet, a filter element receiving cavity, and an exhaust port that are connected in sequence. Each exhaust port is provided with the first flow meter.

[0010] In some embodiments of this disclosure, any two sets of detection units are isolated from each other.

[0011] In some embodiments of this disclosure, at least two sets of the detection units are arranged at intervals along the length of the housing.

[0012] In some embodiments of this disclosure, the heights of any two filter element receiving cavities are different; and / or, the cross-sectional areas of any two filter element receiving cavities perpendicular to the height direction of the filter element receiving cavity are different.

[0013] In some embodiments of this disclosure, the size of the air inlet of each detection unit in a cross-section perpendicular to the height direction of the housing is larger than the size of the filter element.

[0014] In some embodiments of this disclosure, the filter element detection module further includes a pressure plate disposed on the top surface of the housing, the pressure plate covering the air inlet, and the pressure plate having an air passage connecting the pressure stabilizing tank and the air inlet.

[0015] In some embodiments of this disclosure, the air inlet of each detection unit is located on the top surface of the housing, and the exhaust port of each detection unit is located on the side surface of the housing.

[0016] In some embodiments of this disclosure, the pressure stabilizing tank is provided with a first pressure gauge.

[0017] In some embodiments of this disclosure, the gas supply system is connected to the pressure stabilizing tank via a first pipeline, and the first pipeline is equipped with at least one of a second pressure gauge, a second flow meter, and a pressure regulating valve.

[0018] The filter element testing device of this embodiment provides gas to a pressure stabilizing tank. The pressure stabilizing tank delivers gas at a stable pressure to the filter element housing cavity through an inlet. After flowing through the filter element in the housing cavity, the gas exits from the outlet. A first flow meter at the outlet detects the flow rate. The device determines whether the filter element meets the requirements of the vacuum pump based on the gas flow rate measured by the first flow meter and the rated flow rate range of the filter element. Specifically, if the gas flow rate at the outlet is within the rated flow rate range of the filter element, the filter element is deemed to meet the requirements of the vacuum pump; if the gas flow rate at the outlet is not within the rated flow rate range, the filter element is deemed insufficient to meet the requirements of the vacuum pump, and in this case, the filter element of the vacuum pump needs to be replaced. The gas supply system and pressure stabilizing tank provide a stable gas pressure to the filter element detection module, ensuring a stable flow rate at the module's exhaust port. The filter element detection module can check whether the filter element meets the requirements of the vacuum pump, allowing for timely replacement and ensuring a stable nitrogen flow rate. Simultaneously, it maintains the vacuum level of the vacuum pump, prevents shaft seal failure, prevents finished products from entering the oil tank and contaminating the lubricating oil, and extends the service life of the vacuum pump. Attached Figure Description

[0019] Figure 1 This is a flowchart illustrating the operation of the filter cartridge testing device according to an embodiment of the present disclosure;

[0020] Figure 2 This is a schematic diagram of the overall structure of the filter element testing device according to an embodiment of the present disclosure;

[0021] Figure 3 for Figure 2 The diagram shows a partial structural schematic of the filter cartridge testing device.

[0022] The labels in the attached diagram are as follows:

[0023] 100. Filter cartridge testing device;

[0024] 10. Gas supply system;

[0025] 20. Pressure stabilizing tank; 21. First pressure gauge;

[0026] 30. Filter element detection module; 301. Filter element receiving cavity; 302. Air inlet; 303. Exhaust outlet; 31. Housing; 32. Pressure plate;

[0027] 41. Second pressure gauge; 42. Pressure regulating valve; 43. Second flow meter;

[0028] 51. First pipeline; 52. Second pipeline;

[0029] 200. Filter element. Detailed Implementation

[0030] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0031] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0032] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0033] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0034] like Figures 1 to 3 As shown, an embodiment of this disclosure provides a filter element testing device 100, which includes an air supply system 10, a pressure stabilizing tank 20, and a filter element testing module 30. The air supply system 10 is connected to the pressure stabilizing tank 20. The filter element testing module 30 has a testing unit, which includes a filter element receiving cavity 301, an air inlet 302, and an exhaust port 303. The filter element receiving cavity 301 is connected to the air inlet 302 and the exhaust port 303, respectively. The filter element receiving cavity 301 is used to receive a filter element 200. The air inlet 302 of the filter element receiving cavity 301 is connected to the pressure stabilizing tank 20. The exhaust port 303 of the filter element receiving cavity 301 is provided with a first flow meter (not shown in the figure).

[0035] The filter element testing device of this embodiment includes a gas supply system 10, a pressure stabilizing tank 20, and a filter element testing module 30. The gas supply system 10 is connected to the pressure stabilizing tank 20 to supply gas to the pressure stabilizing tank 20. The pressure stabilizing tank 20 is connected to the filter element testing module 30 to supply gas with a stable pressure to the filter element testing module 30. Specifically, the filter element testing module 30 has a testing unit, which includes a filter element receiving cavity 301, an air inlet 302, and an exhaust port 303. The air inlet 302 and the exhaust port 303 are respectively connected to the filter element receiving cavity 301, and the air inlet 302 is connected to the pressure stabilizing tank 20. The supply system supplies gas to the pressure stabilizing tank 20. The pressure stabilizing tank 20 delivers the gas with a stable pressure to the filter element receiving cavity 301 through the air inlet 302. After the gas flows through the filter element 200 in the filter element receiving cavity 301, it is discharged from the filter element receiving cavity 301 through the exhaust port 303. A first flow meter at the exhaust port 303 detects the flow rate of the exhaust port 303. The gas flow rate at exhaust port 303, measured by the first flow meter, is compared with the rated flow rate range of filter element 200 to determine whether filter element 200 meets the requirements for vacuum pump operation. Specifically, if the gas flow rate at exhaust port 303 is within the rated flow rate range of filter element 200, it is determined that filter element 200 meets the requirements for vacuum pump operation; if the gas flow rate at exhaust port 303 is not within the rated flow rate range of filter element 200, it is determined that filter element 200 cannot meet the requirements for vacuum pump operation, and in this case, filter element 200 of the vacuum pump needs to be replaced.

[0036] The filter element testing device 100 of this embodiment provides a stable gas pressure to the filter element testing module 30 through the gas supply system 10 and the pressure stabilizing tank 20, thereby ensuring a stable flow rate at the exhaust port 303 of the filter element testing module 30. The filter element testing module 30 can detect whether the filter element 200 meets the usage requirements of the vacuum pump, so as to replace the filter element 200 in a timely manner, thereby ensuring a stable nitrogen flow rate of the vacuum pump, while ensuring the vacuum degree of the vacuum pump, avoiding shaft seal failure inside the vacuum pump, preventing finished products from entering the oil tank and contaminating the lubricating oil, and extending the service life of the vacuum pump.

[0037] In some embodiments of this disclosure, such as Figure 3 As shown, the filter element detection module 30 includes a housing 31, on which at least two sets of detection units are formed. Specifically, each set of detection units includes an air inlet 302, a filter element receiving cavity 301, and an exhaust port 303 connected in sequence. Each exhaust port 303 is equipped with the first flow meter. Specifically, a plurality of filter element receiving cavities 301 are formed inside the housing 31. Each filter element receiving cavity 301 is connected to a corresponding air inlet 302 and to a corresponding exhaust port 303, so that each filter element receiving cavity 301 can realize air intake and exhaust.

[0038] In some embodiments of this disclosure, any two sets of detection units are isolated from each other, meaning that any two sets of detection units are not connected to each other. Specifically, any two filter element receiving cavities 301 are not connected to each other, any two air inlets 302 are not connected to each other, and any two exhaust ports 303 are not connected to each other. By isolating any two sets of detection units from each other, each detection unit can independently inspect the filter element 200, ensuring the independent detection capability of each detection unit. Simultaneously, it prevents gas leakage from the filter element receiving cavity 301 being tested into other filter element receiving cavities 301, ensuring the airtightness of the filter element receiving cavity 301 being tested, thereby improving the detection accuracy of the filter element detection module 30.

[0039] In some embodiments of this disclosure, any two filter element receiving cavities 301 have different dimensions. Filter element receiving cavities 301 with different dimensions can accommodate filter elements 200 of different sizes, enabling the filter element detection device 100 to detect the airflow of multiple filter elements 200 of different sizes, thus improving the applicability of the filter element detection device 100. Specifically, any two filter element receiving cavities 301 have different heights; or, perpendicular to the height direction of the filter element detection module 30, the cross-sectional areas of the two filter element receiving cavities 301 are different; or, any two filter element receiving cavities 301 have different heights and, perpendicular to the height direction of the filter element detection module 30, the cross-sectional areas of the two filter element receiving cavities 301 are different. By setting filter element receiving cavities 301 of different heights, filter elements 200 of different heights can be accommodated for detection; by setting filter element receiving cavities 301 of different cross-sectional areas, filter elements 200 of different cross-sectional areas can be accommodated for detection.

[0040] In some embodiments of this disclosure, at least two detection units are arranged at intervals along the length of the housing 31, that is, at least two filter element receiving cavities 301 are arranged at intervals along the length of the housing 31, at least two air inlets 302 are arranged at intervals along the length of the housing 31, and at least two exhaust ports 303 are arranged at intervals along the length of the housing 31. Specifically, at least two air inlets 302 are spaced apart along the length of the housing 31 on the top surface of the housing 31 to facilitate the installation of the filter element 200 into the filter element receiving cavity 301 through the air inlets 302. At least two exhaust ports 303 are spaced apart along the length of the housing 31 on the side of the housing 31, and at least two exhaust ports 303 are located on the same side of the housing 31 to facilitate the operator to observe the first flow meter of each exhaust port 303.

[0041] In some embodiments of this disclosure, on a plane perpendicular to the height direction of the housing 31, the size of the air inlet 302 is larger than the size of the filter element 200. That is, when the interface between the air inlet 302 and the filter element 200 is circular, the diameter of the air inlet 302 is larger than the diameter of the filter element 200. Or when the cross-sections of the air inlet 302 and the filter element 200 are rectangular, the length and width of the air inlet 302 are larger than the length and width of the cross-section of the filter element 200, respectively. Or the cross-sections of the air inlet 302 and the filter element 200 are polygonal, and the cross-section of the air inlet 302 can completely cover the cross-section of the filter element 200. That is, no matter what shape the cross-sections of the air inlet 302 and the filter element 200 are, the air inlet 302 can accommodate the filter element 200 so that the filter element 200 can be installed from the air inlet 302 into the filter element receiving cavity 301.

[0042] In some embodiments of this disclosure, such as Figure 2 , Figure 3 As shown, the filter element detection module 30 also includes a pressure plate 32, which is located on the top surface of the housing 31. The pressure plate 32 covers the air inlet 302 of the filter element receiving cavity 301, and the pressure plate 32 is provided with an air passage (not shown in the figure). One end of the air passage is connected to the pressure stabilizing tank 20 through the second pipe 52, and the other end of the air passage is connected to the air inlet 302 of the filter element receiving cavity 301, so as to realize the connection between the pressure stabilizing tank 20 and the filter element receiving cavity 301 through the pressure plate 32. At the same time, the pressure plate 32 has a certain weight, and the pressure plate 32 covering the air inlet 302 of the filter element receiving cavity 301 can make the filter element receiving cavity 301 a closed cavity.

[0043] Furthermore, the pressure plate 32 is movably covered over the air inlet 302 of the filter element receiving cavity 301, so that the pressure plate 32 can be moved to different positions of the air inlet 302 of the filter element receiving cavity 301 to cover the air inlet 302 of different filter element receiving cavities 301 so that the covered filter element receiving cavity 301 becomes a closed cavity.

[0044] A sealing element is provided on the side of the pressure plate 32 that contacts the air inlet 302 of the filter element receiving cavity 301. When the pressure plate 32 covers the air inlet 302 of the filter element receiving cavity 301, the pressure plate 32 and the air inlet 302 of the filter element receiving cavity 301 are sealed by the sealing element to ensure the airtightness between the pressure plate 32 and the air inlet 302 of the filter element receiving cavity 301. Alternatively, the air inlet 302 of the filter element receiving cavity 301 is provided with a sealing element, and when the pressure plate 32 covers the air inlet 302 of the filter element receiving cavity 301, the pressure plate 32 and the air inlet 302 of the filter element receiving cavity 301 are sealed by the sealing element to ensure the airtightness between the pressure plate 32 and the air inlet 302 of the filter element receiving cavity 301.

[0045] In some embodiments of this disclosure, such as Figure 1 , Figure 2As shown, the pressure stabilizing tank 20 is equipped with a first pressure gauge 21. The pressure of the pressure stabilizing tank 20 can be obtained through the first pressure gauge 21, so that the pressure stabilizing tank 20 outputs stabilizing gas to the filter element receiving cavity 301, ensuring that the stabilizing gas discharged from the exhaust port 303 of the filter element receiving cavity 301 is stabilizing, that is, ensuring that the gas flow rate discharged from the exhaust port 303 connected to the filter element receiving cavity 301 is relatively uniform.

[0046] In some embodiments of this disclosure, such as Figure 1 As shown, the gas supply system 10 and the pressure stabilizing tank 20 are connected through a first pipe 51. A second pressure gauge 41 is provided on the first pipe 51. The pressure supplied by the gas supply system 10 to the pressure stabilizing tank 20 can be obtained through the second pressure gauge 41 on the first pipe 51 between the gas supply system 10 and the pressure stabilizing tank 20.

[0047] In some embodiments of this disclosure, such as Figure 1 , Figure 2 As shown, a second flow meter 43 is installed on the first pipe 51. The flow rate of the gas supplied to the pressure stabilizing tank 20 can be obtained through the second flow meter 43 on the first pipe 51 between the gas supply system 10 and the pressure stabilizing tank 20. The flow rate of the gas supplied to the pressure stabilizing tank 20 by the supply system can be adjusted according to the flow rate data of the second flow meter 43, the data of the second pressure gauge 41 and the data of the first pressure gauge 21.

[0048] In some embodiments of this disclosure, such as Figure 1 As shown, a pressure regulating valve 42 is provided on the first pipeline 51, and the flow rate of the gas supplied by the supply system to the pressure stabilizing tank 20 is adjusted by the pressure regulating valve 42.

[0049] It should be noted that in this embodiment, the height direction of the filter element detection module 30, the height direction of the housing 31, and the height direction of the filter element receiving cavity 301 are all in the same direction, such as... Figure 3 As shown.

[0050] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A filter cartridge testing device, characterized in that, The filter cartridge testing device includes: Gas supply system; A pressure stabilizing tank, and the gas supply system is connected to the pressure stabilizing tank; A filter element detection module has a detection unit, which includes a filter element receiving cavity, an air inlet, and an exhaust port. The filter element receiving cavity is connected to the air inlet and the exhaust port, respectively. The filter element receiving cavity is used to receive the filter element. The air inlet is connected to the pressure stabilizing tank. The exhaust port is equipped with a first flow meter.

2. The filter element testing device according to claim 1, characterized in that, The filter element detection module includes a housing, on which at least two sets of detection units are formed. Each set of detection units includes an air inlet, a filter element receiving cavity, and an exhaust port that are connected in sequence. Each exhaust port is equipped with the first flow meter.

3. The filter element testing device according to claim 2, characterized in that, Any two sets of detection units are isolated from each other.

4. The filter element testing device according to claim 2, characterized in that, At least two sets of the detection units are arranged at intervals along the length of the housing.

5. The filter element testing device according to claim 2, characterized in that, Any two of the filter cartridge receiving cavities have different heights; and / or The cross-sectional areas of any two filter element receiving cavities are different in the direction perpendicular to the height of the filter element receiving cavity.

6. The filter element testing device according to claim 2, characterized in that, In each of the detection units, the size of the air inlet is larger than the size of the filter element in a cross-section perpendicular to the height of the housing.

7. The filter element testing device according to claim 2, characterized in that, The filter element detection module also includes a pressure plate, which is located on the top surface of the housing and covers the air inlet. The pressure plate has an air passage that connects the pressure stabilizing tank and the air inlet.

8. The filter element testing device according to claim 2, characterized in that, The air inlet of each of the detection units is located on the top surface of the housing, and the exhaust port of each of the detection units is located on the side surface of the housing.

9. The filter element testing device according to any one of claims 1 to 8, characterized in that, The pressure stabilizing tank is equipped with a first pressure gauge.

10. The filter element testing device according to any one of claims 1 to 8, characterized in that, The gas supply system is connected to the pressure stabilizing tank through a first pipeline, and the first pipeline is equipped with at least one of a second pressure gauge, a second flow meter, and a pressure regulating valve.

Images