Pressure maintaining and leakage detecting device for filter

Abstract

The utility model provides a filter pressure maintaining and leak hunting device, which comprises a test box body, a pressure maintaining and leak hunting device, a pressure maintaining and leak hunting device, a pressure maintaining and leak hunting device, a pressure maintaining and leak hunting device and a pressure maintaining and leak hunting device, the to-be-tested filter is mounted on the lifting platform, and the lifting platform has a first state in which the to-be-tested filter is driven to be put into the soaking tank and a second state in which the to-be-tested filter is driven to be separated from the soaking tank; the driving assembly is used for driving the lifting table to be switched between a first state and a second state; and the air supply assembly supplies air to the driving assembly and the to-be-tested filter. The filter pressure maintaining and leakage detecting device can simultaneously realize leakage point detection, sealing pressure maintaining test and automatic detection, and can simultaneously measure a plurality of filters to be detected, so that the testing time is shortened, the production efficiency is improved, and the testing accuracy and the installation convenience are improved.

Description

Technical Field

[0001] The utility model relates to a filter pressure-maintaining leakage detection device. Background Art

[0002] After the production of capsule filters is completed, it is necessary to confirm whether there are any leaks in the welds of the capsule filters. Currently known side leakage methods are mainly semi-automatic single tests, which take too long and are inefficient. The stability during testing is poor and cumbersome operating steps are required during installation, especially during meter adjustment and pipe connection, which seriously affects production efficiency.

[0003] In view of this, it is necessary to improve the existing filter pressure maintaining and leak detection device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a filter pressure-maintaining leak detection device to solve the problems of the existing semi-automatic testing method, which is cumbersome, low in efficiency and poor in stability.

[0005] To achieve the above-mentioned purpose, the present invention provides a filter pressure-maintaining and leak-detecting device, which comprises:

[0006] A test box having a water immersion tank for placing a test liquid;

[0007] A lifting platform, on which the filter to be tested is mounted, wherein the lifting platform has a first state of driving the filter to be tested into the immersion tank and a second state of driving the filter to be tested out of the immersion tank;

[0008] a driving assembly, the driving assembly being used to drive the lifting platform to switch between a first state and a second state;

[0009] An air supply component supplies air to the driving component and to the filter to be tested.

[0010] As a further improvement of the present invention, the air supply assembly includes an air tank and a pressure regulating valve for controlling the compressed air to enter the air tank. The pressure regulating valve is provided with an air inlet for connecting the compressed air.

[0011] As a further improvement of the present invention, the air supply assembly also includes a diversion main pipe connected to the air storage tank, and the diversion main pipe is connected to at least two diversion slave pipes, one of which is connected to the drive assembly, and the other is connected to the filter to be tested.

[0012] As a further improvement of the present invention, a diverter is provided on the diverter tube connected to the filter to be tested, and each of the diverters is connected to at least two filters to be tested.

[0013] As a further improvement of the present invention, a test pressure regulator is connected between the diverter and the filter to be tested.

[0014] As a further improvement of the present invention, the filter pressure maintaining leak detection device also includes an electronic pressure gauge connected to the filter to be tested, and a pressure switch controller electrically connected to the electronic pressure gauge and the test pressure regulator. The pressure switch controller controls the operation of the test pressure regulator according to the detection value of the electronic pressure gauge.

[0015] As a further improvement of the present invention, a direct-acting two-position solenoid valve switch is connected between the diverter and the filter to be tested.

[0016] As a further improvement of the present invention, the driving assembly includes a lifting cylinder connected to the lifting platform and a lifting valve for controlling the lifting cylinder, and the air supply assembly is connected to the lifting cylinder to supply air to the lifting cylinder.

[0017] As a further improvement of the present invention, the lifting platform includes a grating plate at the bottom and a connecting piece connecting the grating plate and the lifting cylinder, and the connecting piece extends in a direction perpendicular to the grating plate.

[0018] The beneficial effects of the present invention are as follows: the filter pressure-maintaining leak detection device of the present invention can simultaneously realize leakage point detection and sealing pressure-maintaining test, automatic detection, and can measure multiple filters to be tested at the same time, shortening the test time, improving production efficiency, and improving the accuracy of the test and the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the filter pressure-maintaining leak detection device of the present invention;

[0021] Figure 2 This is a structural diagram of the filter pressure-maintaining leak detection device of the utility model installed with the filter element to be tested;

[0022] Figure 3 This is a schematic structural diagram of the filter pressure-maintaining leak detection device of the present invention, in which the filter element to be tested is installed and part of the test box is removed;

[0023] Figure 4 yes Figure 3 Schematic diagram of the structure of the filter pressure maintaining leak detection device with part of the test box removed. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] like Figures 1 to 4 As shown, the filter pressure-maintaining leak detection device 100 of the present invention includes a test box 1, a lifting platform 2, a drive component 3, an air supply component 4, an electronic pressure gauge 5, and a pressure switch controller 6.

[0028] The test box 1 has a water immersion tank 11 for placing the test liquid. The filter 200 to be tested is installed on the lifting platform 2. The lifting platform 2 has a first state for driving the filter 200 to be tested into the water immersion tank 11 and a second state for driving the filter 200 to be tested out of the water immersion tank 11.

[0029] After gas is passed into the filter 200 to be tested, it is immersed in the immersion tank 11. If there is a leak in the filter 200 to be tested, air will overflow and generate bubbles in the test liquid. If the tester observes bubbles, it means there is a leak, and the location of the welding leak can be determined based on the location of the bubbles.

[0030] The driving component 3 is used to drive the lifting platform 2 to switch between the first state and the second state. The driving component 3 includes a lifting cylinder 31 connected to the lifting platform 2 and a lifting valve 32 used to control the lifting cylinder 31. The air supply component 4 is connected to the lifting cylinder 31 to supply air to the lifting cylinder 31.

[0031] In this embodiment, the number of the lifting cylinders 31 and the number of the lifting valves 32 are both two, and the two lifting cylinders 31 and the two lifting valves 32 are arranged on both sides of the lifting platform 2 .

[0032] The lifting platform 2 includes a grating 21 at the bottom and a connector 22 connecting the grating 21 to the lifting cylinder 31. The connector 22 extends perpendicular to the grating 21. The connector 22 protrudes into the immersion tank 11. The lifting platform 2 facilitates lifting the filter 200 to be tested, and facilitates removal and installation of the filter 200 to be tested.

[0033] The grating plate 21 is provided with a plurality of through holes, so that the grating plate 21 can quickly enter or exit the test liquid. The lifting cylinder 31 can drive the connecting member 22 along a direction perpendicular to the extension direction of the grating plate 21.

[0034] The air supply component 4 is used to supply air to the driving component 3 and to the filter 200 to be tested.

[0035] In this embodiment, the air supply assembly 4 includes an air tank 41 , a pressure regulating valve 42 for controlling the flow of compressed air into the air tank 41 , and a diversion main pipe 44 connected to the air tank 41 .

[0036] The pressure regulating valve 42 is provided with an air inlet 43 for connecting compressed air. The pressure regulating valve 42 can control the pressure of the air entering the air storage tank 41 .

[0037] The main branch pipe 44 is connected to at least two secondary branch pipes 45, one of which is connected to the drive assembly 3, and the other is connected to the filter 200 under test. In this embodiment, there are three secondary branch pipes 45, one of which is used to supply air to the lifting cylinder 31, and the other two are used to supply air to the filter 200 under test.

[0038] A flow diverter 46 is provided on the diverter tube 45 connected to the filter 200 to be tested. Each diverter 46 is connected to at least two filters 200 to be tested. In this embodiment, two diverters 46 are provided, each connected to four filters 200 to be tested. This means that the filter pressure-maintaining leak detection device 100 of the present invention can simultaneously test eight filters 200 to be tested, achieving extremely high detection efficiency.

[0039] A test pressure regulator 47 and a direct-acting two-position solenoid valve switch 48 are connected between the diverter 46 and the filter to be tested 200 .

[0040] The electronic pressure gauge 5 is connected to the filter 200 to detect the gas pressure in the filter 200 .

[0041] The pressure switch controller 6 is used to be electrically connected to the electronic pressure gauge 5 and the test pressure regulator 47 . The pressure switch controller 6 controls the operation of the test pressure regulator 47 according to the detection value of the electronic pressure gauge 5 .

[0042] The working process of the filter pressure-maintaining leak detection device 100 of the present invention is as follows: before the test, first, compressed air is introduced into the air tank 41 through the air inlet 43 on the pressure regulating valve 42; the lifting platform 2 is driven to rise to install the filter 200 to be tested on the grid plate 21, and at the same time connected with the electronic pressure gauge 5, the pressure switch controller 6, the diverter 46, etc.; then the driving component 3 drives the lifting platform 2 to descend until the filter 200 to be tested is completely immersed in the test liquid; the air supply component 4 works to introduce air into the filter 200 to be tested, and the electronic pressure gauge 5, the pressure switch controller 6, the test pressure regulator 47 and the direct-acting two-position solenoid valve are opened. The switch 48 cooperates to accurately control and monitor the pressure required for the test. Specifically, the electronic pressure gauge 5 detects the air pressure in the filter 200 to be tested, and the pressure switch controller 6 makes judgments and operates according to the pressure value. If the pressure is too low, a signal will be output to the test pressure regulator 47 to start, so that the pressure value can be adjusted. If the pressure is too low, the direct-acting two-position solenoid valve switch 48 will be started to automatically close the channel. At this time, the test pressure regulator 47 will be closed, and the pressure value changes of the product can be observed to obtain test data for a certain period of time; the bubbles can be used to observe whether the filter 200 to be tested has leaks. After the test is completed, the lifting platform 2 can be controlled to lift to remove the filter 200 to be tested.

[0043] The filter pressure-maintaining leak detection device 100 of the present invention can simultaneously realize leakage point detection and sealing pressure-maintaining test, automatic detection, and can measure multiple filters 200 to be tested at the same time, shortening the test time, improving production efficiency, and improving test accuracy and installation convenience.

[0044] 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.

[0045] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A filter pressure-maintaining leak detection device, characterized in that: The filter pressure maintaining and leak detecting device comprises: A test box having a water immersion tank for placing a test liquid; A lifting platform, on which the filter to be tested is mounted, wherein the lifting platform has a first state of driving the filter to be tested into the immersion tank and a second state of driving the filter to be tested out of the immersion tank; a driving assembly, the driving assembly being used to drive the lifting platform to switch between a first state and a second state; An air supply component supplies air to the driving component and to the filter to be tested.

2. The filter pressure-maintaining leak detection device according to claim 1, characterized in that: The air supply assembly includes an air storage tank and a pressure regulating valve for controlling the compressed air to enter the air storage tank. The pressure regulating valve is provided with an air inlet for connecting the compressed air.

3. The filter pressure-maintaining leak detection device according to claim 2, characterized in that: The air supply assembly further includes a diversion main pipe connected to the air storage tank, the diversion main pipe is connected to at least two diversion slave pipes, one of which is connected to the drive assembly, and the other is connected to the filter to be tested.

4. The filter pressure-maintaining leak detection device according to claim 3, characterized in that: A flow diverter is provided on the diverter tube connected to the filter to be tested, and each of the flow diverters is connected to at least two filters to be tested.

5. The filter pressure-maintaining leak detection device according to claim 4, characterized in that: A test pressure regulator is connected between the diverter and the filter to be tested.

6. The filter pressure-maintaining leak detection device according to claim 5, characterized in that: The filter pressure-maintaining leak detection device also includes an electronic pressure gauge connected to the filter to be tested, and a pressure switch controller electrically connected to the electronic pressure gauge and the test pressure regulator. The pressure switch controller controls the operation of the test pressure regulator according to the detection value of the electronic pressure gauge.

7. The filter pressure-maintaining leak detection device according to claim 6, characterized in that: A direct-acting two-position electromagnetic valve switch is connected between the diverter and the filter to be tested.

8. The filter pressure-maintaining leak detection device according to claim 1, characterized in that: The driving assembly includes a lifting cylinder connected to the lifting platform and a lifting valve for controlling the lifting cylinder. The air supply assembly is connected to the lifting cylinder to supply air to the lifting cylinder.

9. The filter pressure-maintaining leak detection device according to claim 8, characterized in that: The lifting platform includes a grating plate at the bottom and a connecting piece connecting the grating plate and the lifting cylinder, wherein the connecting piece extends in a direction perpendicular to the grating plate.

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