Odor-resistant filter cartridge testing fixture and testing method

Abstract

A kind of odor barrier filter test fixture and test method, including first cover body and second cover body respectively sealed cover being equipped in the import end and export end of to-be-tested odor barrier filter, first cover body and second cover body are respectively communicated in the internal passage of odor barrier filter to form first chamber and second chamber, smoke generation module is equipped in second chamber, and the outlet end of pressurizing module is communicated with second chamber, and the air inlet end of air pressure detection module is communicated with second chamber, the distance between the distance of gas outlet end in liquid surface is controlled to thereby adjust the test pressure in second chamber. When using, the pressure in second chamber is raised to test pressure by pressurizing module, and whether the pressure in second chamber reaches the requirement is judged by observing whether the gas outlet end of gas outlet pipe bubbles, whether the smoke appears in first chamber can be judged simultaneously, whether the sealing performance of odor barrier filter meets the requirement, the whole test does not need complex electronic control and detection instrument, and the configuration cost is low, and the application range is large.

Description

Technical Field

[0001] This invention relates to the field of odor-blocking performance testing technology for odor-blocking filter cartridges, and in particular to a testing fixture for odor-blocking filter cartridges. Background Technology

[0002] Currently, most flush-free urinals and floor drains use mechanical methods such as flap valves or rubber diaphragms for sealing. This method must ensure both the forward flow of liquid and the ability to seal against odors, so the reliability of this seal requires specialized equipment for testing and verification. However, there is currently no easy-to-use testing equipment for mechanical seals. Summary of the Invention

[0003] The purpose of this invention is to provide a test fixture and test method for odor-proof filter cartridges, aiming to provide a simple fixture and test method for verifying the sealing effect of mechanical seals.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A test fixture for odor-blocking filter cartridges, comprising:

[0006] A first cover and a second cover, wherein one end of the first cover is sealed and disposed on the side where the inlet end of the odor-proof filter element is located, and a first chamber is formed therein that communicates with the internal channel of the odor-proof filter element; one end of the second cover is sealed and disposed on the side where the outlet end of the odor-proof filter element is located, and a second chamber is formed therein that communicates with the internal channel of the odor-proof filter element.

[0007] A smoke generating module is disposed in the second chamber, or the smoke generating module's mist outlet is connected to the second chamber;

[0008] The pressurization module, whose outlet end is connected to the second chamber; and

[0009] The air pressure detection module includes a container filled with liquid and having a scale, and an air outlet pipe. The air inlet of the air outlet pipe is connected to the second chamber, and the air outlet of the air outlet pipe is inserted into the liquid. The distance between the air outlet of the air outlet pipe and the liquid surface can be observed by the scale.

[0010] Furthermore, the test chamber includes a partition that divides the test chamber into a first chamber and a second chamber. The portion of the test chamber located in the first chamber constitutes the first cover, and the portion of the test chamber located in the second chamber constitutes the second cover. The partition has a filter element mounting position, and the odor-blocking filter element is sealed and adapted to the filter element mounting position.

[0011] Furthermore, the filter element mounting position includes a connecting hole connecting the first chamber and the second chamber, and also includes a fixing ring disposed in the partition located in the first chamber. The internal space of the fixing ring is connected to the connecting hole, and the radial dimension of the fixing ring is larger than the radial dimension of the connecting hole, so that the step difference between the fixing ring and the connecting hole constitutes a limiting surface.

[0012] Furthermore, the second chamber is provided with a bracket for fixing the smoke generating module.

[0013] Furthermore, the second cover is provided with a vent hole communicating with the second chamber, and the vent hole is provided with a removable sealing plug.

[0014] Furthermore, the other end of the first cover is provided with a sealing and adapting upper cover, and the other end of the second cover is provided with a sealing and adapting lower cover, and the lower cover is provided with the bracket.

[0015] Furthermore, a movable fixing bracket is provided outside the air outlet pipe, and the fixing bracket is attached to the bottle mouth of the container.

[0016] Furthermore, the outer wall of the second cover is provided with a pressurization mounting position, and the second cover is provided with an air inlet communicating with the pressurization mounting position. The pressurization module pressurizes the second chamber by introducing air through the air inlet.

[0017] Furthermore, both the first and second covers are made of transparent material.

[0018] A method for using the odor-blocking filter cartridge testing fixture as described above includes the following steps:

[0019] S1. Sealing test: Seal the first cover and the second cover onto the inlet and outlet ends of the odor-blocking filter element to be tested, respectively. The distance between the outlet end of the vent pipe and the liquid surface corresponds to the pressure required for testing in the second chamber. Start the pressurization module and observe whether bubbles emerge from the outlet end of the vent pipe.

[0020] If so, the air pressure in the second chamber meets the test air pressure requirements, and the airtightness is good;

[0021] If not, the second chamber is not airtight. Readjust the installation between the first and second covers and the inlet and outlet ends of the odor-blocking filter element to be tested, and repeat the above steps until bubbles are observed to emerge.

[0022] S2. Smoke generation: Activate the smoke generation module until the second chamber is filled with smoke;

[0023] S3. Sealing test: Start the pressurization module to pressurize the second chamber until bubbles start to emerge from the outlet end of the vent pipe;

[0024] S4. Observe the test results: If smoke is observed in the first chamber, the odor-blocking filter element under test is not sealed properly; if no smoke is observed in the first chamber, the odor-blocking filter element under test is sealed properly.

[0025] The beneficial effects of this invention are:

[0026] 1. This invention proposes a testing fixture for odor-blocking filter cartridges, comprising a first cover and a second cover respectively sealing the inlet and outlet ends of the odor-blocking filter cartridge under test. The first cover and the second cover are respectively connected to the internal channel of the odor-blocking filter cartridge to form a first chamber and a second chamber. A smoke generating module is provided in the second chamber, and the outlet end of a pressurizing module is connected to the second chamber, as is the inlet end of a pressure detection module. The test pressure in the second chamber is adjusted by controlling the distance between the outlet end of the outlet pipe and the liquid surface. In use, the pressure in the second chamber is increased to the test pressure by the pressurizing module, and the pressure in the second chamber is judged by observing whether bubbles appear at the outlet end of the outlet pipe. At the same time, the sealing performance of the odor-blocking filter cartridge is judged by observing whether smoke appears in the first chamber. The entire test does not require complex electronic control and detection instruments, has low configuration cost, and a wide range of applications.

[0027] 2. The present invention proposes a test fixture for odor-proof filter cartridges, wherein the partition plate is provided with an installation position, the installation position including a connecting hole and a fixing ring. When installing the odor-proof filter cartridge to be tested, the odor-proof filter cartridge to be tested passes through the connecting hole and is simultaneously sealed and adapted to the fixing ring, thereby improving the installation efficiency of the odor-proof filter cartridge and thus improving the testing efficiency.

[0028] 3. The present invention proposes an odor-proof filter element testing fixture, wherein the second cover is provided with a vent hole connected to the second chamber. When the smoke generating module generates smoke through combustion, the vent hole can supplement the combustion of the smoke generating module with sufficient oxygen to prevent the smoke generating module from extinguishing prematurely. When sufficient smoke is generated, the sealing plug is sealed to fit the vent hole to prevent smoke leakage.

[0029] 4. The present invention proposes an odor-blocking filter cartridge testing fixture, which has a movable fixing frame outside the air outlet pipe. The fixing frame is attached to the bottle mouth of the container. Therefore, by moving the position of the fixing frame, the length of the air outlet pipe can be adjusted. At the same time, the fixing frame is attached to the bottle mouth of the container to ensure that the distance between the air outlet end of the air outlet pipe and the liquid surface remains unchanged.

[0030] 5. The present invention proposes an odor-blocking filter cartridge testing fixture, wherein the first cover and the second cover are made of transparent material, which makes it easy for the tester to observe whether the first cover is filled with smoke and whether there is smoke in the second cover. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of a test fixture for an odor-blocking filter element according to the present invention;

[0033] Figure 2 This is a top view of a test fixture for an odor-blocking filter element according to the present invention;

[0034] Figure 3 This is a front view of a test fixture for an odor-blocking filter element according to the present invention;

[0035] Figure 4 This is an exploded view of a test fixture for an odor-blocking filter element according to the present invention;

[0036] Figure 5 This is one of the cross-sectional views of a test fixture for an odor-blocking filter element according to the present invention;

[0037] Figure 6 This is a second cross-sectional view of a test fixture for an odor-blocking filter element according to the present invention;

[0038] Figure 7 This is a front view of the test chamber of a test fixture for odor-blocking filter cartridges according to the present invention;

[0039] Figure 8 for Figure 7 Sectional view along line AA;

[0040] Figure 9 This is a schematic diagram of the test chamber of a test fixture for an odor-blocking filter element according to the present invention;

[0041] In the diagram, 10 is the test chamber; 101 is the partition; 102 is the first chamber; 103 is the second chamber; 104 is the first cover; 105 is the second cover; 201 is the connecting hole; 202 is the fixing ring; 30 is the smoke generating module; 40 is the pressurization module; 501 is the container; 502 is the air outlet pipe; 503 is the fixing bracket; 601 is the vent hole; 602 is the sealing plug; 701 is the pressurization mounting position; 702 is the air inlet; 801 is the upper cover; 802 is the lower cover; 901 is the upper sealing ring; 902 is the lower sealing ring; 100 is the bracket; and 110 is the odor-blocking filter element. Detailed Implementation

[0042] Example 1

[0043] The following is combined with Figure 1-9 This embodiment will be described in detail.

[0044] A test fixture for odor-blocking filter cartridges, comprising:

[0045] A first cover 104 and a second cover 105 are provided. One end of the first cover 104 is sealed and provided on the side where the inlet end of the odor-proof filter element 110 is located, and a first chamber 102 is formed therein, which communicates with the internal channel of the odor-proof filter element 110. One end of the second cover 105 is sealed and provided on the side where the outlet end of the odor-proof filter element 110 is located, and a second chamber 103 is formed therein, which communicates with the internal channel of the odor-proof filter element 110.

[0046] The smoke generating module 30 is located in the second chamber 103, or the smoke generating module 30 is connected to the second chamber 103.

[0047] The pressurization module 40, whose outlet end is connected to the second chamber 103; and

[0048] The air pressure detection module includes a graduated container 501 filled with liquid and an outlet pipe 502. The liquid is typically water. The inlet end of the outlet pipe 502 is connected to a second chamber 103, and the outlet end of the outlet pipe 502 is inserted into the liquid. The distance between the outlet end of the outlet pipe 502 and the liquid surface is observed through the graduated scale. The greater the distance between the outlet end of the outlet pipe 502 and the liquid surface, the greater the pressure at the outlet end of the outlet pipe 502. Therefore, by controlling the distance between the outlet end of the outlet pipe 502 and the liquid surface, the test pressure in the second chamber 103 is adjusted.

[0049] In use, the pressure in the second chamber 103 is increased to the test pressure by the pressurization module 40, and whether the pressure in the second chamber 103 meets the requirements is determined by observing whether bubbles appear at the outlet end of the vent pipe 502. At the same time, whether smoke appears in the first chamber 102 can be used to determine whether the sealing performance of the odor-blocking filter element 110 meets the requirements. The entire test does not require complicated electronic control and testing instruments, has low configuration cost, and has a wide range of applications.

[0050] In this embodiment, as Figure 8As shown, the test chamber 10 includes a partition 101 that divides it into a first chamber 102 and a second chamber 103. The portion of the test chamber 10 located in the first chamber forms a first cover 104, and the portion located in the second chamber forms a second cover 105. The partition 101 has a filter element mounting position, and an odor-blocking filter element 110 is sealed and fitted into this position. Further, the filter element mounting position includes a connecting hole 201 that connects the first chamber 102 and the second chamber 103, and a fixing ring 202 disposed within the partition 101 in the first chamber 102. The internal space of the fixing ring 202 is connected to the connecting hole 201, and the radial dimension of the fixing ring 202 is larger than the radial dimension of the connecting hole 201, such that the step difference between the fixing ring 202 and the connecting hole 201 forms a limiting surface. Therefore, as... Figure 5 As shown, when installing the odor-blocking filter element 110 to be tested, the odor-blocking filter element 110 is inserted through the connecting hole 201 and simultaneously sealed and adapted to the fixing ring 202, thereby improving the installation efficiency of the odor-blocking filter element 110 and thus improving the testing efficiency.

[0051] In this embodiment, the smoke generating module 30 produces smoke, such as cigarette smoke or wood smoke, through its own combustion. Therefore, a bracket 100 for fixing the smoke generating module 30 is provided in the second chamber 103. To facilitate observation of the smoke flow trend, the smoke color is usually a easily recognizable color, such as red or blue. In other embodiments, the smoke generating module 30 can be a smoke generator, with the outlet end of the smoke generator connected to the second chamber 103.

[0052] In this embodiment, as Figure 4 As shown, the second cover 105 is provided with a vent 601 communicating with the second chamber 103, and the vent 601 is provided with a removable sealing plug 602. The vent 601 can provide sufficient oxygen for the combustion of the smoke generating module 30, preventing the smoke generating module 30 from extinguishing prematurely. When sufficient smoke is generated, the sealing plug 602 is sealed to fit the vent 601 to prevent smoke leakage.

[0053] In this embodiment, as Figure 4 As shown, the other end of the first cover 104 is provided with a sealing and adapting upper cover 801, and the other end of the second cover 105 is provided with a sealing and adapting lower cover 802, and the lower cover 802 is provided with a bracket 100. Specifically, the portion of the upper cover 801 that adapts to the other end of the first cover 104 is provided with an upper sealing ring 901, and the portion of the lower cover 802 that adapts to the other end of the second cover 105 is provided with a lower sealing ring 902. At the same time, the bracket 100 is provided on the lower cover 802, so that the smoke generating module 30 can be placed in the second chamber 103 through the lower cover 802.

[0054] In this embodiment, a movable fixing bracket 503 is provided outside the vent pipe 502. By moving the position of the fixing bracket 503, the length of the vent pipe 502 can be adjusted. At the same time, the fixing bracket 503 overlaps the mouth of the container 501 to ensure that the distance between the vent pipe 502's vent end and the liquid surface remains unchanged. Furthermore, the distance between the vent pipe 502's vent end and the liquid surface can be adjusted according to relevant testing standards. That is, according to the standard sealing water seal depth requirement, it must be greater than or equal to a 50mm high water seal. Therefore, the pressure in the second chamber 103 can be the same as the pressure at a water depth of 50mm, that is, the distance between the vent pipe 502's vent end and the liquid surface can be 50mm.

[0055] In this embodiment, the outer side wall of the second cover 105 is provided with a pressurization mounting position 701. The pressurization module 40 is usually an air pump, and the pressurization mounting position 701 is a mounting hole adapted to the air pump. At the same time, the second cover 105 is provided with an air inlet 702 communicating with the mounting hole, and the air pump supplements the pressure to the second chamber 103 through the air inlet 702.

[0056] In this embodiment, the first cover 104 and the second cover 105 are made of transparent material, which makes it easy for testers to observe whether the first cover 104 is filled with smoke and whether the second cover 105 contains smoke.

[0057] Implementation 2

[0058] This embodiment also proposes a method for using the odor-blocking filter cartridge testing fixture as described above, including the following steps:

[0059] S1. Sealing test: Seal the first cover 104 and the second cover 105 on the inlet and outlet ends of the odor-blocking filter element 110 to be tested, respectively. The distance between the outlet end of the vent pipe 502 and the liquid surface corresponds to the pressure required for testing in the second chamber 103. Start the pressurization module 40 and observe whether there are bubbles coming out of the outlet end of the vent pipe 502.

[0060] If so, the air pressure in the second chamber 103 meets the test air pressure requirements and the airtightness is good;

[0061] If not, the second chamber 103 is not airtight. Readjust the installation between the first cover 104 and the second cover 105 and the inlet and outlet ends of the odor-blocking filter element 110 to be tested, and repeat the above steps until bubbles are observed to emerge.

[0062] S2. Smoke generation: Start the smoke generation module 30 until the second chamber 103 is filled with smoke;

[0063] S3. Sealing test: Start the pressurization module 40 to pressurize the second chamber 103 until bubbles start to emerge from the outlet end of the vent pipe 502;

[0064] S4. Observe the test results: If smoke is observed in the first chamber 102, the odor-blocking filter element 110 under test is not sealed properly. If no smoke is observed in the first chamber 102, the odor-blocking filter element 110 under test is sealed properly.

[0065] In step S1 of this embodiment, the odor-blocking filter element 110 to be tested is installed in the filter element installation position, so that the odor-blocking filter element 110 is sealed and adapted to the fixing ring 202, ensuring that the odor-blocking filter element 110 is sealed and adapted to the filter element installation position, so that the smoke can only flow from the second chamber 103 to the second chamber 103 through the internal channel of the odor-blocking filter element 110.

[0066] During the sealing test, a counterweight can be added to the outside of the upper cover 801 to improve the sealing between the upper cover 801 and the first cover 104, as well as between the lower cover 802 and the second cover 105. Meanwhile, during the test, minor air leaks are permissible in other parts, provided that air bubbles emerge from the outlet end of the vent pipe 502.

[0067] In step S2 of this embodiment, before the smoke generating module 30 generates enough smoke in the second chamber 103 through its own combustion, the sealing plug 602 is removed from the vent 601 to ensure that enough oxygen enters the second chamber 103 so that the smoke generating module 30 will not extinguish prematurely. When enough smoke is generated, the sealing plug 602 is sealed and adapted to the vent 601 to prevent smoke leakage.

[0068] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand and implement the present invention. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A test fixture for odor-blocking filter cartridges, characterized in that, include: A first cover and a second cover, wherein one end of the first cover is sealed and disposed on the side where the inlet end of the odor-proof filter element is located, and a first chamber is formed therein that communicates with the internal channel of the odor-proof filter element; one end of the second cover is sealed and disposed on the side where the outlet end of the odor-proof filter element is located, and a second chamber is formed therein that communicates with the internal channel of the odor-proof filter element. A smoke generating module is disposed in the second chamber, or the smoke generating module's mist outlet is connected to the second chamber; The pressurization module has its outlet connected to the second chamber; The air pressure detection module includes a container filled with liquid and having a scale, and an air outlet pipe. The air inlet of the air outlet pipe is connected to the second chamber, and the air outlet of the air outlet pipe is inserted into the liquid. The distance between the air outlet of the air outlet pipe and the liquid surface can be observed by the scale. The test chamber includes a partition that divides it into a first chamber and a second chamber. The portion of the test chamber located in the first chamber forms the first cover, and the portion located in the second chamber forms the second cover. The partition has a filter element mounting position, and the odor-blocking filter element is sealed and adapted to the filter element mounting position. The filter element mounting position includes a connecting hole that connects the first chamber and the second chamber, and a fixing ring disposed in the partition within the first chamber. The internal space of the fixing ring is connected to the connecting hole, and the radial dimension of the fixing ring is larger than the radial dimension of the connecting hole, such that the step difference between the fixing ring and the connecting hole forms a limiting surface.

2. The odor-blocking filter element testing fixture as described in claim 1, characterized in that, The second chamber is equipped with a bracket for fixing the smoke generating module.

3. The odor-blocking filter element testing fixture as described in claim 2, characterized in that, The second cover is provided with a vent hole communicating with the second chamber, and the vent hole is provided with a removable sealing plug.

4. The odor-blocking filter element testing fixture as described in claim 2, characterized in that, The first cover has a sealed upper cover at one end, and the second cover has a sealed lower cover at the other end, and the lower cover has the bracket.

5. The odor-blocking filter element testing fixture as described in claim 1, characterized in that, The outlet pipe is provided with a movable fixing bracket, which is attached to the mouth of the container.

6. The odor-blocking filter element testing fixture as described in claim 1, characterized in that, The outer wall of the second cover is provided with a pressurization mounting position, and the second cover is provided with an air inlet communicating with the pressurization mounting position. The pressurization module pressurizes the second chamber by introducing air through the air inlet.

7. The odor-blocking filter element testing fixture as described in claim 1, characterized in that, The first and second covers are made of transparent material.

8. A method of using the odor-blocking filter cartridge testing fixture as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Sealing Check: Seal the first and second covers to the inlet and outlet ends of the odor-blocking filter element under test, respectively. Position the distance between the outlet end of the vent pipe and the liquid surface to correspond to the pressure required for testing in the second chamber. Activate the pressurization module and observe whether bubbles emerge from the outlet end of the vent pipe. If so, the air pressure in the second chamber meets the test pressure requirements, indicating good airtightness. If not, the airtightness of the second chamber is poor. Readjust the installation of the first and second covers with the inlet and outlet ends of the odor-blocking filter element under test, and repeat the above steps until bubbles are observed. S2. Smoke generation: Activate the smoke generation module until the second chamber is filled with smoke; S3. Sealing test: Start the pressurization module to pressurize the second chamber until bubbles start to emerge from the outlet end of the vent pipe; S4. Observe the test results: If smoke is observed in the first chamber, the odor-blocking filter element under test is not sealed properly; if no smoke is observed in the first chamber, the odor-blocking filter element under test is sealed properly.

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