Test fixture and test method for odor-isolating filter element

Abstract

The invention relates to an odor-isolating filter element testing jig and a testing method, the odor-isolating filter element testing jig comprises a first cover body and a second cover body which are respectively arranged at an inlet end and an outlet end of an odor-isolating filter element to be tested in a sealing and covering manner, the first cover body and the second cover body are respectively communicated with an inner channel of the odor-isolating filter element to form a first chamber and a second chamber, and a smoke generating module is arranged in the second chamber; the outlet end of the pressurization module is communicated with the second cavity, the air inlet end of the air pressure detection module is communicated with the second cavity, and the test pressure in the second cavity is adjusted by controlling the distance between the air outlet end of the air outlet pipe and the liquid level. During use, the pressure in the second chamber is increased to the test pressure through the pressurization module, whether the pressure in the second chamber meets the requirement is judged by observing whether the air outlet end of the air outlet pipe bubbles, and whether the sealing performance of the odor isolation filter element meets the requirement can be judged by observing whether smoke appears in the first chamber. Complex electronic control and detection instruments are not needed in the whole test process, configuration cost is low, and the application range is wide.

Description

Technical Field

[0001] The invention relates to the technical field of odor-isolating performance detection of odor-isolating filter elements, and in particular to a odor-isolating filter element testing fixture. Background Art

[0002] At present, most water-free urinals and floor drains are sealed by mechanical means such as flaps or rubber diaphragms. This method must ensure both the forward conduction of liquid and the reverse sealing of odor, so the sealing reliability of this method requires special equipment for testing and verification. However, there is currently no easy-to-use test equipment for mechanical sealing test verification. Summary of the invention

[0003] The purpose of the present invention is to provide a test fixture and a test method for an odor-isolating filter element, aiming to provide a simple fixture and a test method for verifying the sealing effect of a mechanical sealing method.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A odor-isolating filter element test fixture, comprising:

[0006] A first cover body and a second cover body, wherein a sealing cover at one end of the first cover body is arranged at a side where the inlet end of the odor-isolating filter element is located, and a first chamber communicating with the internal passage of the odor-isolating filter element is formed therein; a sealing cover at one end of the second cover body is arranged at a side where the outlet end of the odor-isolating filter element is located, and a second chamber communicating with the internal passage of the odor-isolating filter element is formed therein;

[0007] A smoke generating module is disposed in the second chamber, or a smoke outlet end of the smoke generating module is connected to the second chamber;

[0008] a pressurizing module, the outlet of which is connected to the second chamber; and

[0009] The air pressure detection module includes a container containing liquid and having a scale and an air outlet pipe, the air inlet end of the air outlet pipe is connected to the second chamber, the air outlet end of the air outlet pipe is inserted into the liquid, and the distance between the current air outlet end of the air outlet pipe and the liquid surface is observed through the scale.

[0010] Furthermore, it includes a test cavity, in which a partition is provided, the partition separates the test cavity into the first chamber and the second chamber, the part of the test cavity located in the first cavity constitutes the first cover body, the part of the test cavity located in the second cavity constitutes the second cover body, the partition is provided with a filter element mounting position, and the odor-isolating filter element seal is 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 arranged on the partition plate 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, a bracket for fixing the smoke generating module is provided in the second chamber.

[0013] Furthermore, the second cover body is provided with an air vent connected to the second chamber, and the air vent is provided with a detachable sealing plug.

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

[0015] Furthermore, a movable fixing frame is provided outside the air outlet pipe, and the fixing frame is overlapped at the bottle mouth of the container.

[0016] Furthermore, the outer side wall of the second cover body is provided with a pressurizing installation position, and the second cover body is provided with an air inlet hole connected to the pressurizing installation position, and the pressurizing module intakes air and pressurizes the second chamber through the air inlet hole.

[0017] Furthermore, the first cover body and the second cover body are made of transparent material.

[0018] A method for using the odor-isolating filter element test fixture as described above comprises the following steps:

[0019] S1. Sealing inspection: The first cover body and the second cover body are respectively sealed and placed on the inlet and outlet ends of the odor-isolating filter element to be tested, and the distance between the outlet end of the outlet pipe and the liquid surface corresponds to the pressure required for the test in the second chamber; the pressurizing module is started to observe whether there are bubbles coming out of the outlet end of the outlet pipe;

[0020] If yes, the air pressure in the second chamber meets the test air pressure requirement and the air tightness is good;

[0021] If not, the air tightness of the second chamber is not good, readjust the installation between the first cover body and the second cover body and the inlet end and outlet end of the odor-isolating filter element to be tested, and repeat the above steps until bubbles are observed;

[0022] S2, smoke generation: starting the smoke generation module until the second chamber is filled with smoke;

[0023] S3, sealing test: start the pressurizing module to pressurize the second chamber until bubbles begin to appear at the outlet end of the outlet pipe;

[0024] S4. Observe the test results: if smoke is observed in the first chamber, the sealing performance of the odor-isolating filter element to be tested is unqualified; if smoke is not observed in the first chamber, the sealing performance of the odor-isolating filter element to be tested is qualified.

[0025] The beneficial effects of the present invention are:

[0026] 1. A odor-isolating filter element test fixture proposed in the present invention comprises a first cover body and a second cover body, which are respectively sealed and arranged at the inlet and outlet ends of the odor-isolating filter element to be tested, the first cover body and the second cover body are respectively connected to the internal channel of the odor-isolating filter element to form a first chamber and a second chamber, a smoke generating module is arranged in the second chamber, and the outlet end of the pressurizing module is connected to the second chamber, and the air inlet end of the air pressure detection module is connected to the second chamber, and the test pressure in the second chamber is adjusted by controlling the distance between the outlet end of the air outlet pipe and the liquid surface. When in use, the pressure in the second chamber is increased to the test pressure by the pressurizing module, and it is judged whether the pressure in the second chamber meets the requirements by observing whether bubbles appear at the outlet end of the air outlet pipe, and it is judged whether the sealing performance of the odor-isolating filter element meets the requirements by observing whether smoke appears in the first chamber. The whole test process does not require complex electronic control and detection instruments, and the configuration cost is low and the scope of application is wide.

[0027] 2. The present invention proposes a odor-isolating filter element testing fixture, wherein a mounting position is provided on a partition, and the mounting position includes a connecting hole and a fixing ring. When installing the odor-isolating filter element to be tested, the odor-isolating filter element to be tested is inserted into the connecting hole and sealed to the fixing ring, thereby improving the installation efficiency of the odor-isolating filter element and further improving the testing efficiency.

[0028] 3. The present invention proposes an odor-isolating filter element test fixture, in which the second cover body is provided with an air hole connected to the second chamber. When the smoke generating module generates smoke through combustion, the air hole can add sufficient oxygen for the combustion of the smoke generating module to prevent the smoke generating module from being extinguished prematurely. When sufficient amount of smoke is generated, the sealing plug is sealed and fitted into the air hole to prevent smoke leakage.

[0029] 4. The present invention proposes an odor-isolating filter element testing fixture, in which a movable fixing frame is provided outside the air outlet pipe, and the fixing frame is overlapped at the bottle mouth of the container. Therefore, by moving the position of the fixing frame, the extended length of the air outlet pipe is adjusted. At the same time, the fixing frame is overlapped at 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. In the odor-isolating filter element testing fixture proposed by the present invention, the first cover body and the second cover body are made of transparent materials, which is convenient for the tester to observe whether the first cover body is full of smoke and whether there is smoke in the second cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of a odor-isolating filter element test fixture of the present invention;

[0033] Figure 2 A top view of a odor-isolating filter element test fixture of the present invention;

[0034] Figure 3 It is a front view of a odor-isolating filter element test fixture of the present invention;

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

[0036] Figure 5 This is one of the cross-sectional views of a odor-isolating filter element testing fixture of the present invention;

[0037] Figure 6 This is a second cross-sectional view of a odor-isolating filter element testing fixture of the present invention;

[0038] Figure 7 It is a front view of a test cavity of a odor-isolating filter element test fixture of the present invention;

[0039] Figure 8 for Figure 7 Middle AA section view;

[0040] Fig. 9 A schematic diagram of a test cavity of an odor-isolating filter element test fixture of the present invention;

[0041] In the figure, 10, test cavity; 101, partition; 102, first cavity; 103, second cavity; 104, first cover; 105, second cover; 201, connecting hole; 202, fixing ring; 30, smoke generating module; 40, pressurizing module; 501, container; 502, air outlet pipe; 503, fixing frame; 601, air vent; 602, sealing plug; 701, pressurizing installation position; 702, air inlet; 801, upper cover; 802, lower cover; 901, upper sealing ring; 902, lower sealing ring; 100, bracket; 110, odor-isolating filter element. DETAILED DESCRIPTION

[0042] Embodiment 1

[0043] Combine the following Figure 1-9 This embodiment is described in detail.

[0044] A odor-isolating filter element test fixture, comprising:

[0045] The first cover body 104 and the second cover body 105, one end of the first cover body 104 is sealed at the side where the inlet end of the odor-isolating filter element 110 is located, and a first chamber 102 communicating with the internal channel of the odor-isolating filter element 110 is formed therein; one end of the second cover body 105 is sealed at the side where the outlet end of the odor-isolating filter element 110 is located, and a second chamber 103 communicating with the internal channel of the odor-isolating filter element 110 is formed therein;

[0046] The smoke generating module 30 is disposed in the second chamber 103, or the smoke outlet end of the smoke generating module 30 is connected to the second chamber 103;

[0047] The pressurizing module 40 has an outlet port connected to the second chamber 103; and

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

[0049] When in use, the pressure in the second chamber 103 is increased to the test pressure through the pressurizing module 40, and whether the pressure in the second chamber 103 meets the requirement is judged by observing whether bubbles appear at the outlet end of the outlet pipe 502. At the same time, whether the sealing performance of the odor-isolating filter element 110 meets the requirement can be judged by observing whether smoke appears in the first chamber 102. The entire test process does not require complicated electronic control and detection instruments, the configuration cost is low, and the scope of application is wide.

[0050] In this embodiment, Figure 8As shown, it includes a test cavity 10, and a partition 101 is provided in the test cavity 10. The partition 101 divides the test cavity 10 into a first chamber 102 and a second chamber 103. The part of the test cavity 10 located in the first cavity constitutes a first cover body 104, and the part of the test cavity 10 located in the second cavity constitutes a second cover body 105. The partition 101 is provided with a filter element installation position, and the odor-isolating filter element 110 is sealed and adapted to the filter element installation position. Furthermore, the filter element installation position includes a connecting hole 201 connecting the first chamber 102 and the second chamber 103, and also includes a fixing ring 202 arranged on 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, so that the step difference between the fixing ring 202 and the connecting hole 201 constitutes a limiting surface. Therefore, as Figure 5 As shown, when installing the odor-isolating filter element 110 to be tested, the odor-isolating filter element 110 to be tested is passed through the connecting hole 201 and is sealed and adapted to the fixing ring 202, thereby improving the installation efficiency of the odor-isolating filter element 110 and further improving the test efficiency.

[0051] In this embodiment, the smoke generating module 30 generates smoke by self-combustion, such as cigarettes, wood blocks, etc., so a bracket 100 for fixing the smoke generating module 30 is provided in the second chamber 103. In order to facilitate observation of the flow trend of the smoke, the color of the smoke is usually a color that is more recognizable, such as red, blue, etc. In other embodiments, the smoke generating module 30 can be a smoke generator, and the outlet end of the smoke generator is connected to the second chamber 103.

[0052] In this embodiment, Figure 4 As shown, the second cover body 105 is provided with an air hole 601 connected to the second chamber 103, and the air hole 601 is provided with a detachable sealing plug 602. The air hole 601 can provide sufficient oxygen for the combustion of the smoke generating module 30 to prevent the smoke generating module 30 from being extinguished prematurely. When sufficient smoke is generated, the sealing plug 602 is sealed and adapted to the air hole 601 to prevent smoke leakage.

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

[0054] In this embodiment, a movable fixing frame 503 is provided outside the air outlet pipe 502. By moving the position of the fixing frame 503, the length of the air outlet pipe 502 extending out is adjusted. At the same time, the fixing frame 503 is overlapped at the bottle mouth of the container 501 to ensure that the distance between the air outlet end of the air outlet pipe 502 and the liquid surface remains unchanged. Further, the distance between the air outlet end of the air outlet pipe 502 and the liquid surface can be adjusted according to relevant test standards, that is, according to the standard sealing water seal depth requirement, it needs to be greater than or equal to 50mm high water seal, so 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 air outlet end of the air outlet pipe 502 and the liquid surface is 50mm.

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

[0056] In this embodiment, the first cover body 104 and the second cover body 105 are made of transparent materials, which is convenient for the tester to observe whether the first cover body 104 is full of smoke and whether there is smoke in the second cover body 105 .

[0057] Implementation II

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

[0059] S1. Sealing inspection: The first cover 104 and the second cover 105 are respectively sealed and placed on the inlet and outlet ends of the odor-isolating filter element 110 to be tested, and the distance between the outlet end of the air outlet pipe 502 and the liquid surface corresponds to the pressure required for the test in the second chamber 103; the pressurizing module 40 is started to observe whether there are bubbles coming out of the outlet end of the air outlet pipe 502;

[0060] If yes, the air pressure in the second chamber 103 meets the test air pressure requirement and the air tightness is good;

[0061] If not, the airtightness of the second chamber 103 is not good, and the first cover 104 and the second cover 105 are re-adjusted to the inlet and outlet ends of the odor-isolating filter element 110 to be tested, and the above steps are repeated until bubbles are observed;

[0062] S2, smoke production: start the smoke generating module 30 until the second chamber 103 is filled with smoke;

[0063] S3, sealing test: start the pressurizing module 40 to pressurize the second chamber 103 until bubbles begin to appear at the outlet end of the outlet pipe 502;

[0064] S4. Observe the test results: if smoke is observed in the first chamber 102, the sealing performance of the odor-isolating filter element 110 to be tested is unqualified; if smoke is not observed in the first chamber 102, the sealing performance of the odor-isolating filter element 110 to be tested is qualified.

[0065] In step S1 of this embodiment, the odor-isolating filter element 110 to be tested is installed in the filter element installation position, so that the odor-isolating filter element 110 is sealed and adapted to the fixing ring 202, ensuring that the odor-isolating filter element 110 is sealed and adapted to the filter element installation position, so that smoke can only flow from the second chamber 103 to the second chamber 103 through the internal channel of the odor-isolating 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 body 104 and between the lower cover 802 and the second cover body 105. At the same time, during the test, under the premise that bubbles emerge from the outlet end of the outlet pipe 502, slight air leakage is allowed in other parts.

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

[0068] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A odor-isolating filter element test fixture, characterized in that: include: A first cover body and a second cover body, wherein a sealing cover at one end of the first cover body is arranged at a side where the inlet end of the odor-isolating filter element is located, and a first chamber communicating with the internal passage of the odor-isolating filter element is formed therein; a sealing cover at one end of the second cover body is arranged at a side where the outlet end of the odor-isolating filter element is located, and a second chamber communicating with the internal passage of the odor-isolating filter element is formed therein; A smoke generating module is disposed in the second chamber, or a smoke outlet end of the smoke generating module is connected to the second chamber; A pressurizing module, the outlet of which is connected to the second chamber; as well as The air pressure detection module includes a container containing liquid and having a scale and an air outlet pipe, the air inlet end of the air outlet pipe is connected to the second chamber, the air outlet end of the air outlet pipe is inserted into the liquid, and the distance between the current air outlet end of the air outlet pipe and the liquid surface is observed through the scale.

2. The odor-isolating filter element testing fixture according to claim 1, characterized in that: It includes a test cavity, in which a partition is provided, the partition separates the test cavity into the first cavity and the second cavity, the part of the test cavity located in the first cavity constitutes the first cover body, the part of the test cavity located in the second cavity constitutes the second cover body, the partition is provided with a filter element installation position, and the odor-isolating filter element seal is adapted to the filter element installation position.

3. The odor-isolating filter element testing fixture according to claim 2, characterized in that: The filter element installation position includes a connecting hole connecting the first chamber and the second chamber, and also includes a fixing ring arranged on the partition plate 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.

4. The odor-isolating filter element testing fixture according to claim 1, characterized in that: The second chamber is provided with a bracket for fixing the smoke generating module.

5. The odor-isolating filter element testing fixture as claimed in claim 4, characterized in that: The second cover body is provided with an air vent connected to the second chamber, and the air vent is provided with a detachable sealing plug.

6. The odor-isolating filter element testing fixture as claimed in claim 4, characterized in that: The other end of the first cover body is provided with a sealing and adapting upper cover, the other end of the second cover body is provided with a sealing and adapting lower cover, and the lower cover is provided with the bracket.

7. The odor-isolating filter element testing fixture according to claim 1, characterized in that: A movable fixing frame is arranged outside the air outlet pipe, and the fixing frame is overlapped at the bottle mouth of the container.

8. The odor-isolating filter element testing fixture according to claim 1, characterized in that: The outer side wall of the second cover body is provided with a pressurizing installation position, and the second cover body is provided with an air inlet hole connected to the pressurizing installation position, and the pressurizing module feeds air into the second chamber through the air inlet hole for pressurization.

9. The odor-isolating filter element testing fixture according to claim 1, characterized in that: The first cover body and the second cover body are made of transparent material.

10. A method for using the odor-isolating filter element test fixture according to any one of claims 1 to 9, characterized in that: The steps include: S1. Sealing inspection: The first cover body and the second cover body are respectively sealed and placed on the inlet and outlet ends of the odor-isolating filter element to be tested, and the distance between the outlet end of the outlet pipe and the liquid surface corresponds to the pressure required for the test in the second chamber; Start the pressurizing module and observe whether bubbles emerge from the outlet end of the outlet pipe; If yes, the air pressure in the second chamber meets the test air pressure requirement and the air tightness is good; If not, the air tightness of the second chamber is not good, readjust the installation between the first cover body and the second cover body and the inlet end and outlet end of the odor-isolating filter element to be tested, and repeat the above steps until bubbles are observed; S2, smoke generation: starting the smoke generation module until the second chamber is filled with smoke; S3, sealing test: start the pressurizing module to pressurize the second chamber until bubbles begin to appear at the outlet end of the outlet pipe; S4. Observe the test results: if smoke is observed in the first chamber, the sealing performance of the odor-isolating filter element to be tested is unqualified; if smoke is not observed in the first chamber, the sealing performance of the odor-isolating filter element to be tested is qualified.

Images