Sealing device for air filter detection

Abstract

The utility model relates to the technical field of detection equipment, and discloses a sealing device for air filter detection, which comprises a mounting seat, the top of the mounting seat is fixedly connected with an embedding frame, the top of the embedding frame is provided with a sealing part, and the sealing part consists of four sealing water tanks which are sequentially connected end to end; a water storage part communicated with the sealed water tank is arranged in the embedded frame; an extrusion part is slidably connected to the embedding frame, an elastic supporting piece is connected between the extrusion part and the embedding frame, when the extrusion part is not subjected to external force, the top of the extrusion part protrudes out of the sealing water tank, and the bottom of the extrusion part is located in the water storage part. According to the utility model, the water storage part and the extrusion part are arranged, and water is extruded into the sealed water tank by using the extrusion part during detection to realize a water sealing effect, so that the stability of the water sealing effect is effectively improved, and the problem of poor detection accuracy caused by unstable sealing effect of a sealing element in the detection process of the air filter in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, and particularly relates to a sealing device for air filter detection. Background Art

[0002] An air filter refers to an air filtering device, which is a device that captures dust from a gas-solid two-phase flow through the action of a porous filtering material and purifies the gas. The leak point detection of an air filter is one of the key judgment criteria for whether the air filter can become a qualified product. In order to detect whether there is a leak point in the air filter, generally, the air filter to be tested is installed on a wall or a board in the normal installation manner, and then air containing smoke is passed through the air filter by a pipeline. The laser generated by a laser light source covers the surface of the air filter, and the amount of smoke and the smoke path trajectory of the air flowing out of the air filter are observed to judge whether there is a leak point on the air filter to be tested.

[0003] At present, the method of observing with the naked eye cannot accurately judge the smoke passing through the air filter to be tested. It can only roughly distinguish which air filters have leak points and which do not, but cannot accurately judge the position and size of the leak points. For this reason, the inventor applied for an invention patent with the name of an air filter detection method, system, and its equipment based on machine vision application, and the publication number is CN113533162A. When in use, the air filter to be detected is placed on the mounting base, and then a smoke generating device at the bottom of the mounting base is used to generate smoke. The smoke passes upward through the mounting base and the air filter to form a smoke trajectory. Finally, an image recognition device is used to automatically detect the filtering effect of the air filter, effectively improving the detection efficiency and accuracy, and enabling the detection result to be rendered and displayed, making the detection result more intuitive.

[0004] In the actual detection process, in order to prevent smoke leakage from the gap between the air filter to be detected and the mounting base, which affects the accuracy of the detection, the inventor sets a sealing member between the air filter to be detected and the mounting base to avoid leakage. Although the set sealing member can achieve a sealing effect, in the actual detection process, since the sealing member needs to be installed each time, it affects the detection efficiency of the air filter and the sealing effect is average; or when the sealing member is set as a water seal structure with a groove, although the water seal can achieve a good sealing effect, the water in the groove is always in an exposed state in the groove. Considering that the temperature of this device is relatively high during the detection process, the moisture in the groove is easily evaporated and lost, resulting in a weakened sealing effect of the water seal and affecting the detection accuracy. Therefore, it is necessary to further improve the sealing structure of the device to improve the detection accuracy of the air filter. Summary of the Utility Model

[0005] The present utility model aims to provide a sealing device for air filter detection, so as to solve the problem of poor detection accuracy caused by unstable sealing effect of the seal in the prior art during the detection of air filters.

[0006] To solve the above problems, the present utility model adopts the following technical scheme: A sealing device for air filter detection, including a mounting base, a fitting frame is fixedly connected to the top of the mounting base, a sealing part is provided on the top of the fitting frame, and the sealing part is composed of four sealing water troughs connected end to end in sequence; a water storage part communicated with the sealing water trough is arranged in the fitting frame; a pressing part is slidably connected to the fitting frame, and an elastic support member is connected between the pressing part and the fitting frame. When the pressing part is not subjected to external force, the top of the pressing part protrudes outside the sealing water trough, and the bottom of the pressing part is located in the water storage part.

[0007] The principle of this solution is: In this application, the fitting frame is used to place the air filter to be tested in the prior art. The sealing part is composed of four sealing water troughs connected end to end. During use, only need to inject water into the sealing water troughs, and then when placing the air filter on the fitting frame, the four sealing water troughs can seal the periphery of the bottom of the air filter, so as to form a stable seal between the air filter and the mounting base, thus avoiding the situation that smoke leakage affects the detection accuracy during the air filter detection process; in addition, in this application, by arranging a water storage part in the fitting frame and slidably connecting a pressing part to the fitting frame, under the elastic support of the elastic support member between the pressing part and the fitting frame, the top of the pressing part protrudes upward outside the sealing water trough. At this time, since the pressing part is in the upper limit position relative to the fitting frame, the water in the sealing water troughs all flows back into the water storage part. When placing the air filter on the fitting frame for detection, the bottom of the air filter first contacts the top of the pressing part. Under the gravity of the air filter, the pressing part is squeezed and moves downward, so that the water in the water storage part is squeezed out into the sealing water troughs, so that the air filter can be sealed by the water in the four sealing water troughs after being placed on the fitting frame, to ensure that the air filter detection is completed more accurately; at the same time, when the detection is completed and the air filter is taken away, under the elastic support of the elastic support member, the pressing part is pushed upward partially or completely outside the water storage part, so that the water in the sealing water troughs flows back into the water storage part, thus avoiding water staying in the sealing water troughs all the time.

[0008] The beneficial effects of this solution are:

[0009] 1. It can provide a stable water sealing effect: Compared with the prior art where other seal structures are used and seals need to be installed during detection, the sealing effect is poor and the detection efficiency is affected. In this application, only need to place the air filter in the fitting frame, and the water in the four sealing water troughs seals the periphery of the bottom of the air filter. The operation is simple and efficient, and the sealing effect is good.

[0010] 2. It can effectively improve the stability of the water seal: In this application, when not detecting, the water automatically flows back into the water storage part from the sealed water tank, thus avoiding the exposed state of the water in the sealed water tank all the time. Combined with the detection environment being in a relatively high temperature state, it can reduce water evaporation, etc., so as to ensure a long-term and stable water seal effect on the air filter. At the same time, since the water flows back into the water storage part when not detecting, it can keep the entire detection working surface in a relatively dry environment when not detecting, thus avoiding wetting the air filter during the installation process and effectively improving the stability during the detection process.

[0011] 3. It can play a certain protective role for the air filter: In this application, after the air filter is placed on the fitting frame, the bottom of the air filter contacts the top of the extrusion part. The extrusion part squeezes the elastic support member, causing the elastic support member to be gradually compressed, so that the elastic support member plays a buffering effect on the placement process of the air filter, thus playing a certain protective role for the air filter.

[0012] Preferably, as an improvement, a limiting protrusion and a flexible seal are fixedly connected to the top of the fitting frame. The limiting protrusion and the flexible seal are respectively located on both sides of the sealed water tank. The limiting protrusion is located at the top edge of the fitting frame, and the top height of the flexible seal is lower than the top height of the limiting protrusion. The four limiting protrusions enclose a limiting frame that cooperates with the air filter.

[0013] In this solution, the limiting protrusions are located at the four peripheral edge positions of the top of the fitting frame, so that the four limiting protrusions enclose a limiting frame that cooperates with the air filter. The limiting frame can play a limiting role in the installation of the air filter, so that the air filter is accurately and stably placed on the fitting frame, effectively improving the accuracy and stability during the detection process. In addition, a flexible seal is fixed on the fitting frame. The flexible seal is located inside the sealed water tank, and the top height of the flexible seal is lower than the top height of the limiting protrusion. After the air filter is placed in the limiting frame, the air filter presses down the extrusion part. When the bottom of the air filter contacts the flexible seal, the air filter stops moving down. At this time, water is pressed into the sealed water tank, which seals the periphery of the bottom of the air filter. At the same time, the flexible seal plays a blocking effect on the water in the sealed water tank, avoiding the water in the sealed water tank from diffusing to the center position of the bottom of the air filter, so that the middle of the bottom of the air filter can maintain an unobstructed filtering state, ensuring the accurate detection of the air filter.

[0014] Preferably, as an improvement, the flexible seal includes a flexible waterproof rubber strip fixedly connected to the top of the fitting frame.

[0015] In this solution, the flexible waterproof rubber strip has a stable structure and can provide a water-blocking effect for a long time. Moreover, the flexible waterproof rubber strip can play a buffering and supporting role for the air filter, making the installation process of the air filter more stable.

[0016] Preferably, as an improvement, a guiding inclined surface is formed on the side of the limiting protrusion facing the center of the fitting frame.

[0017] In this solution, the provided guiding inclined surface plays a guiding role in the process of placing the air filter, making the placement of the air filter more convenient and accurate.

[0018] Preferably, as an improvement, the water storage part includes a water storage cavity formed in the fitting frame, and a water passing hole is communicated between the water storage cavity and the sealing water groove.

[0019] In this solution, the structure of the water storage cavity is provided to effectively store the water used for sealing and reduce the loss of moisture during the undetected process, etc. At the same time, by providing the water passing hole, the water storage cavity and the sealing water groove can be conveniently communicated, with a simple structure and stable inflow and outflow of water.

[0020] Preferably, as an improvement, a plurality of the above-mentioned water passing holes are provided on each sealing water groove, and all the water passing holes in each set of sealing water grooves are uniformly arranged on both sides of the extrusion part.

[0021] In this solution, by providing a plurality of water passing holes, the water in the water storage cavity can quickly enter the sealing water groove to achieve a water sealing effect. At the same time, by uniformly arranging all the water passing holes on both sides of the extrusion part, the water in the water storage cavity can enter the sealing water groove more quickly and fill both sides of the extrusion part with water, achieving a more sufficient water sealing effect.

[0022] Preferably, as an improvement, the extrusion part includes an extrusion block and a top rod fixedly connected to the top of the extrusion block. The extrusion block is slidably connected to the fitting frame. The bottom end of the extrusion block is located in the water storage cavity, and the top end of the top rod protrudes outside the sealing water groove.

[0023] In this solution, the structure of the extrusion block and the top rod is provided. When the air filter is placed, it only contacts the top rod, making the contact area between the water in the sealing water groove and the bottom of the air filter larger, thus achieving a better water sealing effect.

[0024] Preferably, as an improvement, the inside of the extrusion block is hollow.

[0025] In this solution, by making the inside of the extrusion block hollow, the weight of the extrusion block can be reduced while ensuring the water extrusion effect, thereby making the work of the elastic support more stable.

[0026] Preferably, as an improvement, the elastic support member includes a support spring, one end of the support spring abuts against the bottom of the extrusion block, and the other end abuts against the fitting frame.

[0027] In this solution, the support spring is used to support the extrusion block, and the structure of the support spring is simple and easy to replace.

[0028] Preferably, as an improvement, a limiting block is fixedly connected to the bottom of the extrusion block, and the limiting block protrudes beyond the side wall of the extrusion block.

[0029] In this solution, by arranging a limiting block at the bottom of the extrusion block, the limiting block protrudes beyond the side wall of the extrusion block, and the limiting block is located in the water storage cavity. Therefore, during use, even if the support spring generates an upward supporting force on the extrusion block, under the limiting action of the limiting block, the limiting block can only move upward until the top of the limiting block abuts against the fitting frame, thereby preventing the entire extrusion block from being extruded out of the fitting frame and enabling the extrusion block to slide within a certain range, improving the stability of the extrusion block during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of Embodiment 1 of the present utility model.

[0031] Figure 2 It is a front sectional view of the connection between the mounting base and the fitting frame in Embodiment 1 of the present utility model.

[0032] Figure 3 It is Figure 2 a partial enlarged view of A in

[0033] Figure 4 It is the same as Figure 2 a partial enlarged view of A in Embodiment 2 of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following is further detailed through specific embodiments:

[0035] The reference numerals in the accompanying drawings of the specification include: detection table 1, mounting base 2, fitting frame 3, sealing water tank 4, water storage cavity 5, sealing plate 6, water passing hole 7, extrusion block 8, ejector rod 9, support spring 10, limiting block 11, clamping post 12, air filter 13, limiting protrusion 14, guiding inclined surface 1401, flexible waterproof rubber strip 15.

[0036] Embodiment 1

[0037] This embodiment is as shown in the attached Figure 1 figure: A sealing device for air filter detection, including a detection table 1 and a mounting base 2 fixedly connected to the detection table 1. The mounting base 2 is horizontally arranged. Combining Figure 3, a fitting frame 3 is fixedly connected to the top of the mounting base 2 by screws. The fitting frame 3 is a square structure with a vertical through hole in the middle.

[0038] Combined Figure 2 with Figure 3 , a sealing part is provided at the top of the fitting frame 3. The sealing part is composed of four sealing water grooves 4 connected end to end in sequence. The sealing water grooves 4 are integrally formed at the top surface position of the fitting frame 3. At the same time, a water storage part communicating with the sealing water grooves 4 is provided in the fitting frame 3. The water storage part includes a water storage cavity 5 opened in the fitting frame 3. For the convenience of processing and good sealing performance, in this embodiment, after the water storage cavity 5 is opened in the fitting frame 3, a sealing plate 6 is fixedly connected to the bottom of the fitting frame 3 by screws. The sealing plate 6 seals the opening at the bottom of the water storage cavity 5. In addition, a water passing hole 7 is communicated between the water storage cavity 5 and the sealing water grooves 4, so that the water in the water storage cavity 5 can enter the sealing water grooves 4 through the water holes 7. And in order to improve the efficiency of water flow, the number of water passing holes 7 in each sealing water groove 4 is multiple, and the multiple water passing holes 7 are arranged along the length direction of the sealing water groove 4.

[0039] As Figure 3 shown, a pressing part is slidably connected vertically to the fitting frame 3. An elastic support member is connected between the pressing part and the fitting frame 3. When the pressing part is not affected by an external force, the top of the pressing part protrudes beyond the top of the sealing water groove 4, and the bottom of the pressing part is located in the water storage cavity 5. Specifically, the pressing part includes a pressing block 8 and a top rod 9 fixedly connected to the top of the pressing block 8. A sliding groove matched with the pressing block 8 is opened on the bottom wall of the sealing water groove 4, so that the pressing block 8 can slide vertically relative to the sliding groove stably. The top rod 9 is vertically arranged on the top of the pressing block 8 in an integrally formed manner. The multiple water passing holes 7 in each sealing water groove 4 are evenly distributed on both sides of the pressing block 8. The elastic support member is a support spring 10 made of stainless steel. The top end of the support spring 10 abuts against the bottom of the pressing block 8, and the bottom end of the support spring 10 abuts against the sealing plate 6, so that the support spring 10 can play an elastic supporting role on the pressing block 8 in the vertical direction. Thus, when the pressing block 8 is not affected by an external force, the top end of the top rod 9 extends upward beyond the top of the sealing water groove 4.

[0040] In order to enable the extrusion block 8 to slide vertically stably and prevent the extrusion block 8 from being completely pushed outside the fitting frame 3, in this embodiment, a limiting block 11 is integrally formed at the bottom of the extrusion block 8. The limiting block 11 protrudes outside the side wall of the extrusion block 8. When the extrusion block 8 slides upward under the elastic force of the support spring 10, the top surface of the limiting block 11 moves upward to abut against the top wall of the water storage cavity 5, so that the extrusion block 8 cannot continue to slide upward to reach the upper limit position, restricting the sliding range of the extrusion block 8 in the vertical direction and improving the stability of the extrusion block 8 during the sliding process. At the same time, in other embodiments other than this embodiment, the inside of the extrusion block 8 can be hollowed out to reduce the gravity extrusion effect of the extrusion block 8 on the support spring 10, so that the support spring 10 can stably play a supporting role for a long time. Of course, in other embodiments other than this embodiment, after the inside of the extrusion block 8 is set to be hollow, the extrusion block 8 itself can float on the water storage cavity 5, and the hollow structure inside the extrusion block 8 can also be used as the supporting role of the elastic support member, which will not be elaborated here. In addition, in order to enable the support spring 10 to be stably in a vertical state during use, in this embodiment, a clamping post 12 is provided on the top surface of the sealing plate 6, and the bottom end of the support spring 10 is clamped and fixed on the clamping post 12, so that the position of the support spring 10 is stable during use.

[0041] The specific implementation process is as follows:

[0042] In this embodiment, when it is necessary to detect the air filter 13, first fill the water storage cavity 5 with water. Under the elastic support of the support spring 10, the extrusion block 8 is located at the upper limit position. At this time, the top of the ejector rod 9 extends upward outside the top of the sealing water tank 4. Then place the air filter 13 to be detected on the top of the fitting frame 3. During the placement of the air filter 13, the bottom of the air filter 13 first contacts the ejector rod 9. Under the gravity of the air filter 13, the ejector rod 9 is forced to press down the extrusion block 8, and the extrusion block 8 slides downward under the pressure, so that the extrusion block 8 is continuously pressed into the water storage cavity 5, so that the water in the water storage cavity 5 is extruded into the sealing water tank 4 through the water holes 7. When the bottom surface of the air filter 13 contacts the top surface of the fitting frame 3, the air filter 13 is placed at the detection position. At this time, the sealing water tank 4 is filled with water, and the water seals the periphery of the bottom of the air filter 13, thus avoiding leakage gaps at the contact position between the air filter 13 and the fitting frame 3 during the detection of the air filter 13 and improving the accuracy of the air filter 13 detection.

[0043] After the detection of the air filter 13 is completed, the air filter 13 is removed. Since the extrusion of the ejector rod 9 by the air filter 13 disappears, under the elastic support of the support spring 10, the extrusion block 8 slides upward. At this time, the water in the sealing water tank 4 flows back into the water storage cavity 5 through the water holes 7, thus avoiding the sealing water tank 4 being always filled with water when the air filter 13 is not detected. This can not only keep the detection platform in a relatively dry environment, but also effectively reduce the loss of moisture, etc., enabling a stable water seal effect to be formed during the detection process and ensuring the accurate detection of the air filter 13.

[0044] Embodiment 2

[0045] The difference between Embodiment 2 and Embodiment 1 is that as Figure 4 shown, in this embodiment, a limit projection 14 and a flexible seal are fixedly connected to the top of the fitting frame 3. The limit projection 14 is integrally formed on the top of the fitting frame 3, and the flexible seal is a flexible waterproof rubber strip 15 pasted on the top of the fitting frame 3. The limit projection 14 and the flexible waterproof rubber strip 15 are respectively located on both sides of the sealing water tank 4, and the limit projection 14 is located at the edge position of the top of the fitting frame 3, so that the four limit projections 14 enclose a limit frame for cooperating with the air filter 13. At the same time, in order to improve the convenience of placing the air filter 13, a guiding inclined surface 1401 is provided on the side of the limit projection 14 facing the fitting center. In addition, the flexible waterproof rubber strip 15 in this embodiment is located inside the sealing water tank 4, and the top height of the flexible sealing rubber strip is lower than the top height of the limit projection 14.

[0046] In this embodiment, by providing the limit projection 14 and the guiding inclined surface 1401 on the limit projection 14, the guiding inclined surface 1401 can play a guiding role in the placement process of the air filter, so that the air filter 13 can be conveniently and accurately placed in the limit frame enclosed by the limit projection 14. Moreover, under the limiting action of the limit frame, the air filter 13 can be placed more precisely and stably, thereby improving the stability and accuracy during the detection process. In addition, in this embodiment, due to the provision of the flexible waterproof rubber strip 15, when the air filter 13 is lowered to a predetermined position, the bottom surface of the air filter 13 contacts the flexible waterproof rubber strip 15. Using the waterproof effect of the flexible waterproof rubber strip 15, the water in the sealing water tank 4 can be prevented from diffusing towards the center of the bottom of the air filter 13, thus ensuring that the detection of the air filter 13 is carried out more stably and accurately.

[0047] Embodiment 3

[0048] The difference between Embodiment 3 and Embodiment 2 is as follows: The difference between this embodiment and Embodiment 1 is that during the detection process, the bottom of the air filter 13 will come into contact with water, resulting in a part of the water being carried away during the detection process. Therefore, after multiple detections, the water in the water storage cavity 5 may decrease and fail to provide a good water sealing effect for the air filter 13. Therefore, in this embodiment, an observation groove vertically arranged and communicating with the water storage cavity 5 is formed on the side wall of the fitting frame 3. A tempered glass is fixedly connected in the observation groove, and scale lines are provided on the tempered glass. The user can observe the amount of water in the water storage cavity 5 through the scale lines on the tempered glass so as to replenish water in time when the water is insufficient.

[0049] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A sealing device for air filter detection, comprising a mounting seat, characterized in that: A chimeric frame is fixedly connected to the top of the mounting seat, a sealing portion is provided on the top of the chimeric frame, and the sealing portion is composed of four sealed water tanks connected end to end in sequence; a water storage portion connected to the sealed water tank is provided in the chimeric frame; an extrusion portion is slidably connected to the chimeric frame, an elastic support member is connected between the extrusion portion and the chimeric frame, and when the extrusion portion is not subjected to external force, the top of the extrusion portion protrudes out of the sealed water tank, and the bottom of the extrusion portion is located in the water storage portion.

2. The sealing device for air filter detection according to claim 1, characterized in that: The top of the chimeric frame is fixedly connected with a limiting protrusion and a flexible sealing member, which are respectively located on both sides of the sealed water tank. The limiting protrusion is located at the top edge of the chimeric frame, and the top height of the flexible sealing member is lower than the top height of the limiting protrusion. Four limiting protrusions form a limiting frame that cooperates with the air filter.

3. The sealing device for air filter detection according to claim 2, characterized in that: The flexible sealing element comprises a flexible waterproof rubber strip fixedly connected to the top of the mosaic frame.

4. The sealing device for air filter detection according to claim 2, characterized in that: A guiding inclined surface is formed on one side of the limiting protrusion facing the center of the engaging frame.

5. The sealing device for air filter detection according to claim 1, characterized in that: The water storage part comprises a water storage cavity opened in the embedded frame, and a water hole is connected between the water storage cavity and the sealed water tank.

6. The sealing device for air filter detection according to claim 5, characterized in that: There are multiple corresponding water holes on each sealed water tank, and all the water holes in each set of sealed water tanks are evenly arranged on both sides of the extrusion part.

7. The sealing device for air filter detection according to claim 5, characterized in that: The extrusion part comprises an extrusion block and a push rod fixedly connected to the top of the extrusion block. The extrusion block is slidably connected to the chimeric frame. The bottom end of the extrusion block is located in the water storage cavity, and the top end of the push rod protrudes out of the sealed water tank.

8. The sealing device for air filter detection according to claim 7, characterized in that: The interior of the extrusion block is hollow.

9. The sealing device for air filter detection according to claim 7, characterized in that: The elastic support member comprises a support spring, one end of which abuts against the bottom of the extrusion block, and the other end of which abuts against the engaging frame.

10. The sealing device for air filter detection according to claim 9, characterized in that: The bottom of the extrusion block is fixedly connected to a limiting block, and the limiting block protrudes out of the side wall of the extrusion block.

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