Negative pressure bearing testing device for air inlet filter
By setting a pressure plate structure of pressure relief ports and elastic parts on the side wall of the intake filter, the damage caused by the intake filter is solved due to the failure to close the pumping negative pressure machine in time, and the safety and stability of the detection process are achieved.
Patent Information
- Application Number
- CN202422476580.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-14
AI Technical Summary
The existing intake filter was scrapped due to failure to shut down the pumping negative pressure machine in time during the negative pressure test and caused the internal air pressure to be too low.
A pressure relief port is set on the side wall of the intake filter, and a pressure plate with elastic members abutting the inside of it is installed. The pressure relief port is automatically opened when the negative pressure is too low to balance the air pressure and prevent damage.
It improves the safety of negative pressure detection of the intake filter, prevents damage due to low internal air pressure, and ensures the stability of the detection process.
Smart Images
Figure CN223154532U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of filters, and more particularly to a negative pressure bearing test device for an intake filter. Background Art
[0002] An intake filter is a device that removes most of the solid particles and / or liquids in the intake air. During the production and preparation process of the intake filter, a negative pressure test is required to determine whether the product is qualified. In the prior art, when applying negative pressure to the intake filter, generally, when it is detected that the intake filter reaches the set pressure value, it is necessary to manually turn off the machine that applies negative pressure. If the machine is not turned off in time and the pressure value exceeds the set value, it will cause the intake filter to be scrapped due to excessive negative pressure. Therefore, a negative pressure bearing test device for an intake filter is designed. Summary of the Utility Model
[0003] In view of the problems in the related art, the present utility model provides a negative pressure bearing test device for an intake filter to overcome the above-mentioned technical problems existing in the prior related art.
[0004] To solve the above technical problems, the present utility model is realized through the following technical solutions:
[0005] The present utility model is a negative pressure bearing test device for an intake filter, which is applied to the intake filter. An air inlet and a pressure relief port are provided on the side wall of the intake filter. A pressing plate is hermetically abutted against the inner side surface of the pressure relief port, and an elastic member is abutted and installed on the back surface of the pressing plate.
[0006] Further, convex ribs are provided on the back surface of the pressing plate, and guiding inclined surfaces are provided at both ends of the convex ribs.
[0007] Further, the elastic member includes two supports, both of which are fixedly installed on the inner wall of the intake filter, and the two supports are respectively located at both ends of the pressing plate. An elastic telescopic shaft is fixedly installed on one side of the support, and a top plate that abuts against the guiding inclined surface of the convex rib is fixedly installed at one end of the elastic telescopic shaft.
[0008] Further, the elastic telescopic shaft includes a telescopic sleeve, one end of the telescopic sleeve is fixedly installed on the support, the other end of the telescopic sleeve is movably inserted with a telescopic rod, one end of the telescopic rod is fixedly connected to the top plate, a spring is sleeved on the surface of the telescopic rod, one end of the spring abuts against the inside of the telescopic sleeve, and the other end of the spring abuts against one side of the top plate.
[0009] Further, a sealing ring located outside the pressure relief port is fixedly installed on the bottom surface of the pressing plate.
[0010] The present utility model has the following beneficial effects:
[0011] 1. In the utility model, a pressure relief port is provided on the side wall of the intake filter. Meanwhile, a pressing plate is installed inside the pressure relief port in a manner of abutting connection through an elastic member to seal the pressure relief port by the pressing plate, so that the intake filter can normally perform the negative pressure pumping detection. If the negative pressure pumping machine connected to the intake filter is not timely closed during the detection and the negative pressure in the intake filter is too low, the pressing plate can be pressured by the external air pressure, move towards the inner side of the intake filter, and abut and deform the elastic member, thereby opening the pressure relief port. The external air enters the interior of the intake filter through the pressure relief port to balance the air pressure inside and outside the intake filter, prevent the intake filter from being scrapped and damaged due to too low internal air pressure, and improve the safety during the negative pressure pumping detection of the intake filter. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0013] Figure 1 is a schematic structural diagram of the intake filter and the negative pressure bearing test device of the utility model;
[0014] Figure 2 For the utility model Figure 1 is a cross-sectional view of the A-A section;
[0015] Figure 3 For the utility model Figure 1 is a cross-sectional view of the B-B section;
[0016] Figure 4 For the utility model Figure 1 is a partially enlarged schematic structural diagram at I.
[0017] In the figure: 1, intake filter; 2, intake port; 3, pressure relief port; 4, pressing plate; 5, sealing ring; 6, telescopic rod; 7, convex rib; 8, top plate; 9, spring; 10, telescopic sleeve; 11, support. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only some, rather than all, of the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the utility model.
[0019] In the description of the present utility model, it should be understood that terms such as "opening", "upper", "lower", "top", "middle", "inner", etc. indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the utility model.
[0020] Please refer to Figures 1-4 As shown, the present utility model is a negative pressure bearing test device for an intake filter, which is applied to the intake filter 1. An air inlet 2 and a pressure relief port 3 are provided on the side wall of the intake filter 1. A pressing plate 4 is hermetically abutted against the inner side surface of the pressure relief port 3, and an elastic member is abutted and installed on the back surface of the pressing plate 4;
[0021] Among them, a pressure relief port 3 is opened on the side wall of the intake filter 1, and at the same time, a pressing plate 4 is abutted and installed against the inner side of the pressure relief port 3 through an elastic member to seal the pressure relief port 3 through the pressing plate 4, so that the intake filter 1 can normally perform negative pressure pumping detection. If the negative pressure pumping machine connected to the intake filter 1 is not timely closed during the detection, when the negative pressure in the intake filter 1 is too low, the pressing plate 4 can be pressured by the external air pressure, move towards the inner side of the intake filter 1, and abut and deform the elastic member, thereby opening the pressure relief port 3, and the external air enters the interior of the intake filter 1 through the pressure relief port 3 to balance the internal and external air pressures of the intake filter 1, preventing the intake filter 1 from being scrapped and damaged due to too low internal air pressure, and improving the safety during the negative pressure pumping detection of the intake filter 1.
[0022] Specifically, convex ribs 7 are provided on the back surface of the pressing plate 4, and guiding inclined surfaces are provided at both ends of the convex ribs 7; the elastic member includes two supports 11, both of the two supports 11 are fixedly installed on the inner wall of the intake filter 1, and the two supports 11 are respectively located at both ends of the pressing plate 4. An elastic telescopic shaft is fixedly installed on one side of the support 11, and a top plate 8 abutting against the guiding inclined surface of the convex rib 7 is fixedly installed at one end of the elastic telescopic shaft; the elastic telescopic shaft includes a telescopic sleeve 10, one end of the telescopic sleeve 10 is fixedly installed on the support 11, the other end of the telescopic sleeve 10 is movably inserted with a telescopic rod 6, one end of the telescopic rod 6 is fixedly connected to the top plate 8, and a spring 9 is sleeved on the surface of the telescopic rod 6. One end of the spring 9 abuts against the inside of the telescopic sleeve 10, and the other end of the spring 9 abuts against one side of the top plate 8;
[0023] Among them, the top plate 8 abuts against the guiding inclined surface at the end of the convex rib 7 under the elastic force of the spring 9, so as to abut the pressing plate 4 against the pressure relief port 3 through the cooperation of the top plate 8 and the convex rib 7. When the internal air pressure of the intake filter 1 is too low during the negative pressure pumping detection, the pressing plate 4 moves towards the inner direction of the intake filter 1 under the action of the internal and external pressure difference, and drives the convex rib 7 to move synchronously. At the same time, the convex rib 7 pushes the top plate 8 to move outwards through the guiding inclined surface, so that the spring 9 contracts, and the telescopic rod 6 contracts into the telescopic sleeve 10.
[0024] Specifically, a sealing ring 5 located outside the pressure relief port 3 is fixedly installed on the bottom surface of the pressing plate 4. By providing the sealing ring 5, the sealing performance of the pressing plate 4 on the pressure relief port 3 can be improved, preventing air leakage during negative pressure testing.
[0025] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0026] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and variations can be made. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that those skilled in the relevant technical field can well understand and utilize the utility model.
Claims
1. A negative pressure bearing test device for an intake filter, which is applied to the intake filter (1), and is characterized in that: An air inlet (2) and a pressure relief port (3) are provided on the side wall of the air inlet filter (1). A pressing plate (4) is sealingly abutted against the inner side surface of the pressure relief port (3), and an elastic member is mounted in abutment against the back surface of the pressing plate (4).
2. The negative pressure bearing test device for an intake air filter according to claim 1, wherein: A convex rib (7) is provided on the back surface of the pressing plate (4), and guiding inclined surfaces are provided at both ends of the convex rib (7).
3. The negative pressure bearing test device for an intake air filter according to claim 2, characterized in that: The elastic member includes two supports (11). Both of the two supports (11) are fixedly mounted on the inner wall of the air inlet filter (1), and the two supports (11) are respectively located at both ends of the pressing plate (4). An elastic telescopic shaft is fixedly mounted on one side of the support (11), and a top plate (8) abutting against the guiding inclined surface of the convex rib (7) is fixedly mounted at one end of the elastic telescopic shaft.
4. The negative pressure bearing test device for an intake air filter according to claim 3, characterized in that: The elastic telescopic shaft includes a telescopic sleeve (10). One end of the telescopic sleeve (10) is fixedly mounted on the support (11), and a telescopic rod (6) is movably inserted into the other end of the telescopic sleeve (10). One end of the telescopic rod (6) is fixedly connected to the top plate (8). A spring (9) is sleeved on the surface of the telescopic rod (6). One end of the spring (9) abuts against the inside of the telescopic sleeve (10), and the other end of the spring (9) abuts against one side of the top plate (8).
5. The negative pressure bearing test device for an intake filter according to claim 1, wherein: A sealing ring (5) located outside the pressure relief port (3) is fixedly mounted on the bottom surface of the pressing plate (4).