A device for detecting the flatness of the soft seal of an air valve

Abstract

This application relates to a testing device for the sealing performance of a soft-seal plane of an air valve, belonging to the technical field of air valve sealing testing equipment. It includes a mounting base; a guiding and stabilizing mechanism mounted on the mounting base; a holding mechanism slidably connected to the guiding and stabilizing mechanism, the holding mechanism having a flat pressing seat for abutting against the upper side of the workpiece to be tested, and an air injection structure for injecting air into the workpiece; and a driving mechanism for driving the holding mechanism to slide along the guiding direction of the guiding and stabilizing mechanism, thereby causing the flat pressing seat to abut against the upper side of the workpiece. Because the driving mechanism drives the holding mechanism to slide along the guiding direction of the guiding and stabilizing mechanism, thereby causing the flat pressing seat to abut against the upper side of the workpiece, it facilitates the testing of the soft-seal plane of an incompletely formed air valve. The driving mechanism can quickly lift the flat pressing seat after the air valve testing is completed, facilitating the testing of the next air valve.

Description

Technical Field

[0001] This invention relates to the field of air valve sealing testing equipment, and more specifically to a testing device for the sealing performance of soft-seal planes of air valves. Background Technology

[0002] Air valves consist of valve components, valve stems, and emergency purging side valves, primarily used for distributing air within the system. The main sealing material is molded into the valve stem, making the sealing material and valve stem metal a single unit. The density of the sealing material itself and the tightness of its filling within the grooves of the valve stem metal significantly impact the valve's sealing performance.

[0003] In the existing technology, the air valve is installed on the pipeline for sealing test after it has been fully formed to determine whether the air valve's sealing performance meets the standards.

[0004] However, if the sealing test is performed after the air valve is fully formed, and the sealing performance fails to meet the standards, the finished valve stem will be scrapped, resulting in a waste of processing materials and processing time. Summary of the Invention

[0005] This application provides a device for testing the sealing performance of the soft seal plane of an air valve. This device solves the problem in the prior art where sealing testing is performed after the air valve is fully formed. If the sealing performance is not up to standard, the finished valve stem will be scrapped, resulting in wasted processing materials and processing time.

[0006] In a first aspect, embodiments of this application provide a device for detecting the sealing performance of a soft-seal plane of an air valve, comprising:

[0007] Mounting base;

[0008] A guiding and stabilizing mechanism is mounted on the mounting base;

[0009] A holding mechanism is slidably connected to the guiding and stabilizing mechanism. The holding mechanism is provided with a flat clamping seat, which is used to abut against the upper side of the workpiece to be tested. The flat clamping seat is provided with an air injection structure, which is used to inject air into the workpiece to be tested.

[0010] A driving mechanism is used to drive the holding mechanism to slide along the guiding direction of the guiding and stabilizing mechanism, so as to drive the planar top clamping seat to abut against the upper side of the workpiece to be tested.

[0011] In conjunction with the first aspect, in one embodiment, the pressing mechanism includes:

[0012] A holding assembly is slidably connected to the guiding and stabilizing mechanism, and the planar top clamping seat is provided on the lower side of the holding assembly;

[0013] A clamping connector is used to connect the clamping assembly and the driving mechanism, so that the driving mechanism can drive the clamping assembly to slide along the guiding direction of the guiding and stabilizing mechanism, thereby causing the planar top clamping seat to abut against the upper side of the workpiece to be tested.

[0014] In conjunction with the first aspect, in one embodiment, the pressing connector includes:

[0015] A connecting rod, one end of which is connected to the pressing assembly;

[0016] The pressure plate is connected to the drive mechanism and to the other end of the connecting rod, so that when the drive mechanism drives the pressure plate to move, the pressure holding assembly moves through the connecting rod.

[0017] In conjunction with the first aspect, in one embodiment, the pressing assembly is provided with a hemispherical groove, the connecting rod includes a spherical segment and a straight segment connected to each other, the straight segment is connected to the pressure plate, the spherical segment is configured to cooperate with the hemispherical groove and is pressed into the hemispherical groove.

[0018] In conjunction with the first aspect, in one embodiment, the pressing component includes:

[0019] The pressure seat is slidably connected to the guide stabilizing mechanism. The lower side of the pressure assembly is provided with the planar pressing seat, and the upper side of the pressure seat is provided with the hemispherical groove.

[0020] A cover plate is provided on the pressure seat. The cover plate has a second through hole that mates with the spherical segment. When the cover plate is provided on the pressure seat, the spherical segment is locked in the hemispherical groove, and the straight segment and part of the spherical segment extend out of the cover plate from the second through hole.

[0021] In conjunction with the first aspect, in one embodiment, the pressure seat is provided with a plurality of first through holes and a guide hole spaced apart circumferentially, and the guiding and stabilizing mechanism includes:

[0022] The same number of mounting screws as the first through holes, one end of the mounting screws passing through the first through holes and the other end connected to the mounting base, wherein the diameter of the mounting screws is smaller than the diameter of the first through holes;

[0023] A guide rod includes a guide section and a first connecting section and a second connecting section disposed at both ends of the guide section. The guide section passes through the guide hole, the first connecting section extends out of the guide hole, and the second connecting section is connected to the mounting base. The diameter of the guide section matches the diameter of the guide hole.

[0024] In conjunction with the first aspect, in one embodiment, a limiting nut is provided at one end of the mounting screw that passes through the first through hole, the limiting nut being used to limit the height to which the pressure seat rises.

[0025] In conjunction with the first aspect, in one embodiment, the pressure seat is a stepped platform, including a first column and a second column, the first column being located above the second column, and the diameter of the first column being smaller than the diameter of the second column, and the plurality of first through holes and the guide holes being located on the second column.

[0026] In conjunction with the first aspect, in one embodiment, the drive mechanism includes:

[0027] The piston rod is connected to the pressure plate;

[0028] A drive cylinder, connected to the piston rod, is used to drive the piston rod to extend or retract, so as to move the flat pressing seat away from or towards the workpiece to be tested via the pressure plate.

[0029] In conjunction with the first aspect, in one embodiment, the gas injection structure includes:

[0030] An inner air injection tube is disposed within the plane clamping seat, and the inner air injection tube is used to communicate with the workpiece to be tested.

[0031] A branch pipe, which is connected to the inner air injection pipe, is used to inject air into the inner air injection pipe.

[0032] The beneficial effects of the technical solutions provided in this application include:

[0033] When using this testing device for the soft-seal plane sealing performance of air valves, a guide stabilizing mechanism is mounted on a mounting base. The holding mechanism is slidably connected to the guide stabilizing mechanism. A flat clamping seat is provided on the holding mechanism, and an air injection structure is provided on the flat clamping seat. Soap water is applied to the workpiece to be tested. The drive mechanism drives the holding mechanism to slide along the guide direction of the guide stabilizing mechanism, causing the flat clamping seat to abut against the upper side of the workpiece to be tested. The air injection structure injects air into the workpiece to be tested, and the presence of air bubbles is observed to determine the sealing performance of the soft-seal plane of the air valve. Because the drive mechanism drives the holding mechanism to slide along the guide direction of the guide stabilizing mechanism, causing the flat clamping seat to abut against the upper side of the workpiece to be tested, it is convenient to test the soft-seal plane of an incompletely formed air valve. After the air valve test is completed, the drive mechanism can quickly lift the flat clamping seat to facilitate the test of the next air valve. This solves the problem in the prior art where the air valve is fully formed before the sealing test is performed. If the sealing performance is not up to standard, the finished valve stem will be scrapped, resulting in wasted processing materials and processing time. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of an embodiment of the device for detecting the sealing performance of a soft-seal plane of an air valve according to the present invention.

[0036] Figure 2 This is a top view of the mounting base in an embodiment of the device for detecting the sealing performance of a soft-seal plane of an air valve according to the present invention.

[0037] Figure 3 This is a top view of the pressure seat in an embodiment of the device for detecting the sealing performance of a soft-seal plane of an air valve according to the present invention.

[0038] Figure 4 This is a schematic cross-sectional view of the pressure seat in an embodiment of the device for detecting the sealing performance of a soft-seal plane of an air valve according to the present invention.

[0039] Figure 5 This is a schematic diagram of the cover plate structure in an embodiment of the device for detecting the sealing performance of a soft-seal plane of an air valve according to the present invention.

[0040] Figure 6 This is a schematic cross-sectional view of the cover plate in an embodiment of the device for detecting the sealing performance of a soft-seal plane of an air valve according to the present invention.

[0041] Figure 7 This is a schematic diagram of the structure of the planar top clamping seat in an embodiment of the device for detecting the sealing performance of a soft-seal plane of an air valve according to the present invention.

[0042] Figure 8 This is a schematic diagram of the connecting rod in an embodiment of the detection device for the sealing performance of a soft-seal plane of an air valve according to the present invention.

[0043] Figure 9 This is a schematic diagram of the mounting screw structure in an embodiment of a device for detecting the sealing performance of a soft-seal plane of an air valve according to the present invention.

[0044] Figure 10 This is a schematic diagram of the guide rod in an embodiment of the detection device for the soft sealing plane of an air valve according to the present invention.

[0045] Figure 11This is a schematic diagram of the pressure plate structure in an embodiment of the device for detecting the sealing performance of a soft-seal plane of an air valve according to the present invention.

[0046] In the diagram: 1. Mounting base; 11. Cylinder mounting hole; 12. Screw mounting hole; 13. Guide rod mounting hole; 14. Workpiece placement opening; 2. Guide stabilizing mechanism; 21. Mounting screw; 211. Limit nut; 22. Guide rod; 221. Guide section; 222. First connecting section; 223. Second connecting section; 3. Holding mechanism; 31. Holding assembly; 311. Holding seat; 3111. Hemispherical groove; 3112. First through hole; 3113. Guide hole; 3114. First column; 3115. Second column; 311 6. Cover plate mounting hole; 312. Cover plate; 3121. Second through hole; 3122. Cover plate connecting hole; 313. Cover plate locking bolt; 32. Pressing connector; 321. Connecting rod; 3211. Spherical section; 3212. Straight section; 3213. Adjusting nut; 322. Pressure plate; 3221. Piston rod connecting hole; 3222. Connecting rod connecting hole; 4. Drive mechanism; 41. Piston rod; 42. Drive cylinder; 5. Workpiece to be measured; 6. Flat clamping seat; 61. Inner air injection pipe; 62. Branch pipe; 7. Mounting nut. Detailed Implementation

[0047] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0048] This application provides a device for testing the sealing performance of the soft seal plane of an air valve. It solves the problem in the prior art where sealing testing is performed after the air valve is fully formed. If the sealing performance is not up to standard, the finished valve stem will be scrapped, resulting in wasted processing materials and processing time.

[0049] like Figure 1 and Figure 2 As shown, this application provides a device for testing the sealing performance of a soft-seal plane of an air valve, comprising:

[0050] Mounting base 1;

[0051] The guiding and stabilizing mechanism 2 is mounted on the mounting base 1;

[0052] The pressing mechanism 3 is slidably connected to the guiding and stabilizing mechanism 2. The pressing mechanism 3 is provided with a flat pressing seat 6, which is used to abut against the upper side of the workpiece 5 to be tested. The flat pressing seat 6 is provided with an air injection structure, which is used to inject air into the workpiece 5 to be tested.

[0053] The driving mechanism 4 is used to drive the holding mechanism 3 to slide along the guiding direction of the guiding and stabilizing mechanism 2, so as to drive the flat pressing seat 6 to abut against the upper side of the workpiece 5 to be tested.

[0054] When using this testing device for the surface sealing performance of soft seals on air valves, the guide stabilizing mechanism 2 is mounted on the mounting base 1, and the holding mechanism 3 is slidably connected to the guide stabilizing mechanism 2. A flat pressing seat 6 is provided on the holding mechanism 3, and an air injection structure is provided on the flat pressing seat 6. Soap water is applied to the workpiece 5 to be tested, and the driving mechanism 4 drives the holding mechanism 3 to slide along the guiding direction of the guide stabilizing mechanism 2, causing the flat pressing seat 6 to abut against the upper side of the workpiece 5 to be tested. The air injection structure injects air into the workpiece 5 to be tested, and observes whether bubbles are generated to determine the surface sealing performance of the soft seal of the air valve. Since the driving mechanism 4 drives the holding mechanism 3 to slide along the guiding direction of the guiding and stabilizing mechanism 2, so as to drive the flat clamping seat 6 to abut against the upper side of the workpiece 5 to be tested, it is convenient to test the soft sealing surface of the air valve that has not been fully formed. After the air valve is tested, the driving mechanism 4 can quickly lift the flat clamping seat 6 to facilitate the testing of the next air valve. This solves the problem in the prior art that if the sealing performance is not up to standard after the air valve is fully formed, the finished valve stem will be scrapped, which wastes processing materials and processing time.

[0055] In this example, the mounting base 1 is provided with multiple cylinder mounting holes 11, multiple screw mounting holes 12, guide rod mounting holes 13 and workpiece placement opening 14. The cylinder mounting holes 11 are used to install the drive cylinder 42 with the mounting nut 7, the screw mounting holes 12 are used to install the mounting screw 21 with the mounting nut 7, the guide rod mounting holes 13 are used to install the guide rod 22 with the mounting nut 7, and the workpiece placement opening 14 is used to place the workpiece 5 to be tested.

[0056] like Figure 1 As shown, in some optional embodiments, the pressing mechanism 3 includes:

[0057] The pressing component 31 is slidably connected to the guide stabilizing mechanism 2, and a flat pressing seat 6 is provided on the lower side of the pressing component 31.

[0058] The pressing connector 32 is used to connect the pressing assembly 31 and the driving mechanism 4, so that the driving mechanism 4 can drive the pressing assembly 31 to slide along the guiding direction of the guiding and stabilizing mechanism 2, so as to drive the flat pressing seat 6 to abut against the upper side of the workpiece 5 to be tested.

[0059] In this embodiment, the structure of the pressing mechanism 3 is specifically described. The pressing mechanism 3 includes a pressing component 31 and a pressing connector 32. The pressing component 31 is slidably connected to the guide stabilizing mechanism 2. A planar top seat 6 is provided on the lower side of the pressing component 31. The pressing connector 32 is used to connect the pressing component 31 and the driving mechanism 4, so that the driving mechanism 4 can drive the pressing component 31 to slide along the guiding direction of the guide stabilizing mechanism 2, so as to drive the planar top seat 6 to abut against the upper side of the workpiece 5 to be tested. The structure is simple and easy to manufacture.

[0060] like Figure 1 and Figure 11 As shown, in some optional embodiments, the press-fit connector 32 includes:

[0061] Connecting rod 321, one end of which is connected to the pressing assembly 31;

[0062] The pressure plate 322 is connected to the drive mechanism 4 and to the other end of the connecting rod 321, so that when the drive mechanism 4 drives the pressure plate 322 to move, the connecting rod 321 drives the pressing assembly 31 to move.

[0063] In this embodiment, the structure of the pressing connector 32 is specifically described. The pressing connector 32 includes a connecting rod 321 and a pressure plate 322. One end of the connecting rod 321 is connected to the pressing assembly 31, and the pressure plate 322 is connected to the driving mechanism 4 and to the other end of the connecting rod 321. When the driving mechanism 4 drives the pressure plate 322 to move, the pressing assembly 31 is moved through the connecting rod 321. The structure is simple and easy to implement.

[0064] In this example, the pressure plate 322 is provided with a piston rod connecting hole 3221 and a connecting rod connecting hole 3222. The piston rod connecting hole 3221 is used to connect the piston rod 41 with the mounting nut 7. The connecting rod connecting hole 3222 is used to install the connecting rod 321 with the mounting nut 7 and the adjusting nut 3213. The pressure plate 322 can be adjusted to be in a horizontal state by adjusting the adjusting nut 3213.

[0065] like Figure 1 , Figure 3 , Figure 4 and Figure 8 As shown, in some optional embodiments, the pressing assembly 31 is provided with a hemispherical groove 3111, and the connecting rod 321 includes a spherical section 3211 and a straight section 3212 connected to each other. The straight section 3212 is connected to the pressure plate 322, and the spherical section 3211 is configured to cooperate with the hemispherical groove 3111 and is pressed into the hemispherical groove 3111.

[0066] In this embodiment, a hemispherical groove 3111 is provided on the pressing assembly 31, and the connecting rod 321 includes a spherical section 3211 and a straight section 3212 connected to each other. The straight section 3212 is connected to the pressure plate 322, and the spherical section 3211 is fitted with the hemispherical groove 3111 and pressed into the hemispherical groove 3111, so that the pressure of the connecting rod 321 on the pressing assembly 31 is evenly transmitted, preventing the plane pressing seat 6 from not being in close contact with the surface of the workpiece 5 to be tested, which would lead to air leakage.

[0067] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some optional embodiments, the pressure-holding component 31 includes:

[0068] The pressure seat 311 is slidably connected to the guide stabilizing mechanism 2. The pressure assembly 31 has a flat pressing seat 6 on its lower side and a hemispherical groove 3111 on its upper side.

[0069] A cover plate 312 is provided on the pressure seat 311. The cover plate 312 is provided with a second through hole 3121 that mates with the spherical section 3211. When the cover plate 312 is provided on the pressure seat 311, the spherical section 3211 is locked in the hemispherical groove 3111, and the straight section 3212 and part of the spherical section 3211 extend out of the cover plate 312 from the second through hole 3121.

[0070] In this embodiment, the specific structure of the pressing assembly 31 is described. The pressing assembly 31 includes a pressing seat 311 and a cover plate 312. The pressing seat 311 is slidably connected to the guide stabilizing mechanism 2. A flat pressing seat 6 is provided on the lower side of the pressing assembly 31. A hemispherical groove 3111 is opened on the upper side of the pressing seat 311. The cover plate 312 covers the pressing seat 311. The cover plate 312 is provided with a second through hole 3121 that cooperates with the spherical segment 3211. The second through hole 3121 is configured to cooperate with the hemispherical groove 3111. When the cover plate 312 is placed on the pressing seat 311, the spherical segment 3211 is locked in the hemispherical groove 3111. The straight segment 3212 and part of the spherical segment 3211 extend out of the cover plate 312 from the second through hole 3121. The pressing assembly 31 and the connecting rod 321 move synchronously through the cover plate 312. No other structures are required, which simplifies the structure and facilitates implementation.

[0071] like Figure 1 , Figure 3 , Figure 9 and Figure 10 As shown, in some optional embodiments, the pressure seat 311 is provided with a plurality of first through holes 3112 and a guide hole 3113 spaced apart circumferentially, and the guiding and stabilizing mechanism 2 includes:

[0072] The same number of mounting screws 21 as the first through hole 3112, one end of the mounting screw 21 passes through the first through hole 3112 and the other end is connected to the mounting base 1. The diameter of the mounting screw 21 is smaller than the diameter of the first through hole 3112.

[0073] The guide rod 22 includes a guide section 221 and a first connecting section 222 and a second connecting section 223 disposed at both ends of the guide section 221. The guide section 221 passes through the guide hole 3113, the first connecting section 222 extends out of the guide hole 3113, and the second connecting section 223 is connected to the mounting base 1. The diameter of the guide section 221 matches the diameter of the guide hole 3113.

[0074] In this embodiment, a plurality of first through holes 3112 and a guide hole 3113 are provided circumferentially on the pressure seat 311. The guiding and stabilizing mechanism 2 includes mounting screws 21 and guide rods 22 in the same number as the first through holes 3112. One end of the mounting screw 21 passes through the first through hole 3112, and the other end is connected to the mounting seat 1. The diameter of the mounting screw 21 is smaller than the diameter of the first through hole 3112. The guide rod 22 includes a guide section 221 and a first connecting section 222 and a second connecting section 223 disposed at both ends of the guide section 221. The guide section 221 passes through the guide hole 3113, the first connecting section 222 extends out of the guide hole 3113, and the second connecting section 223 is connected to the mounting seat 1. The diameter of the guide section 221 matches the diameter of the guide hole 3113. The mounting screws 21 and the guide rods 22 work together to complete the guiding function and improve the structural stability of the detection device for the soft sealing plane sealing performance of air valves.

[0075] like Figure 1 As shown, in some optional embodiments, a limiting nut 211 is provided at one end of the mounting screw 21 that passes through the first through hole 3112. The limiting nut 211 is used to limit the height of the pressure seat 311.

[0076] In this embodiment, a limiting nut 211 is provided at one end of the mounting screw 21 that passes through the first through hole 3112. The limiting nut 211 is used to limit the height of the pressure seat 311, preventing the pressure seat 311 from rising too high and detaching from the mounting screw 21, thereby improving the structural stability of the detection device for the soft sealing plane sealing performance of air valves.

[0077] like Figure 1 , Figure 4 and Figure 5 As shown, in some optional embodiments, the pressure seat 311 is a stepped platform, including a first platform 3114 and a second platform 3115. The first platform 3114 is located on the upper side of the second platform 3115, and the diameter of the first platform 3114 is smaller than the diameter of the second platform 3115. A plurality of first through holes 3112 and guide holes 3113 are all located on the second platform 3115.

[0078] In this embodiment, the pressure seat 311 is a stepped platform. The pressure seat 311 includes a first column 3114 and a second column 3115. The first column 3114 is located on the upper side of the second column 3115, and the diameter of the first column 3114 is smaller than the diameter of the second column 3115. Multiple first through holes 3112 and guide holes 3113 are provided on the second column 3115. The hemispherical groove 3111 is provided on the first column 3114, which simplifies the structure and reduces the weight of the pressure seat 311.

[0079] In this example, the first column 3114 has multiple cover plate mounting holes 3116 along its circumference, which are used to mate with the corresponding cover plate connecting holes 3122 on the cover plate 312, and are connected by cover plate locking bolts 313. The first column 3114 is a cylinder, and the second column 3115 is a cylinder with a truncated portion.

[0080] like Figure 1 As shown, in some optional embodiments, the drive mechanism 4 includes:

[0081] Piston rod 41, which is connected to pressure plate 322;

[0082] A drive cylinder 42, which is connected to a piston rod 41, is used to drive the piston rod 41 to extend or retract, so as to drive the flat pressing seat 6 away from or towards the workpiece 5 to be measured via the pressure plate 322.

[0083] In this embodiment, the structure of the drive mechanism 4 is specifically described. The drive mechanism 4 includes a piston rod 41 and a drive cylinder 42. The piston rod 41 is connected to the pressure plate 322, and the drive cylinder 42 is connected to the piston rod 41. It is used to drive the piston rod 41 to extend or retract, so as to drive the flat pressing seat 6 away from or close to the workpiece 5 to be measured through the pressure plate 322. The structure is simple and easy to manufacture.

[0084] like Figure 1 and Figure 7 As shown, in some optional embodiments, the gas injection structure includes:

[0085] The air injection inner tube 61 is installed inside the plane top seat 6 and is used to communicate with the workpiece 5 to be tested.

[0086] Branch pipe 62 is connected to the air injection inner pipe 61 and is used to inject air into the air injection inner pipe 61.

[0087] In this embodiment, the specific structure of the air injection structure is described. The air injection structure includes an inner air injection tube 61 and a branch tube 62. The inner air injection tube 61 is disposed in the planar top seat 6 and is used to communicate with the workpiece 5 to be tested. The branch tube 62 is connected to the inner air injection tube 61 and is used to inject air into the inner air injection tube 61. The air is injected through the branch tube 62 and then transported to the workpiece 5 to be tested through the inner air injection tube 61. The structure is simple and easy to manufacture.

[0088] In summary, when using this testing device for the soft seal plane sealing performance of air valves, the guide stabilizing mechanism 2 is mounted on the mounting base 1, the pressing mechanism 3 is slidably connected to the guide stabilizing mechanism 2, the pressing mechanism 3 is provided with a flat clamping seat 6, and the flat clamping seat 6 is provided with an air injection structure. Soap water is applied to the workpiece 5 to be tested, the driving mechanism 4 drives the pressing mechanism 3 to slide along the guiding direction of the guide stabilizing mechanism 2, causing the flat clamping seat 6 to abut against the upper side of the workpiece 5 to be tested, and the air injection structure injects air into the workpiece 5 to be tested. Observe whether bubbles are generated to determine the soft seal plane sealing performance of the air valve. Since the driving mechanism 4 drives the holding mechanism 3 to slide along the guiding direction of the guiding and stabilizing mechanism 2, so as to drive the flat clamping seat 6 to abut against the upper side of the workpiece 5 to be tested, it is convenient to test the soft sealing surface of the air valve that has not been fully formed. After the air valve is tested, the driving mechanism 4 can quickly lift the flat clamping seat 6 to facilitate the testing of the next air valve. This solves the problem in the prior art that if the sealing performance is not up to standard after the air valve is fully formed, the finished valve stem will be scrapped, which wastes processing materials and processing time.

[0089] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0090] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0091] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A device for detecting the sealing performance of a soft-seal plane in an air valve, characterized in that, include: Mounting base (1); A guiding and stabilizing mechanism (2) is provided on the mounting base (1); The holding mechanism (3) is slidably connected to the guiding and stabilizing mechanism (2). The holding mechanism (3) is provided with a flat top seat (6). The flat top seat (6) is used to abut against the upper side of the workpiece (5) to be tested. The flat top seat (6) is provided with an air injection structure. The air injection structure is used to inject air into the workpiece (5) to be tested. The driving mechanism (4) is used to drive the pressing mechanism (3) to slide along the guiding direction of the guiding and stabilizing mechanism (2) so as to drive the planar pressing seat (6) to abut against the upper side of the workpiece (5) to be tested; The pressing mechanism (3) includes: The pressing assembly (31) is slidably connected to the guide stabilizing mechanism (2), and the planar top seat (6) is provided on the lower side of the pressing assembly (31). A pressing connector (32) is used to connect the pressing assembly (31) and the driving mechanism (4), so that the driving mechanism (4) can drive the pressing assembly (31) to slide along the guiding direction of the guiding stabilizing mechanism (2) to drive the planar top seat (6) to abut against the upper side of the workpiece (5) to be tested; The pressing connector (32) includes: A connecting rod (321), one end of which is connected to the pressing assembly (31); The pressure plate (322) is connected to the driving mechanism (4) and to the other end of the connecting rod (321), so that when the driving mechanism (4) drives the pressure plate (322) to move, the connecting rod (321) drives the pressing assembly (31) to move. The pressing assembly (31) is provided with a hemispherical groove (3111), and the connecting rod (321) includes a spherical section (3211) and a straight section (3212) connected to each other. The straight section (3212) is connected to the pressure plate (322), and the spherical section (3211) is configured to cooperate with the hemispherical groove (3111) and is pressed into the hemispherical groove (3111). The pressing component (31) includes: The pressure seat (311) is slidably connected to the guide stabilizing mechanism (2). The pressure assembly (31) has the planar top seat (6) on its lower side and the pressure seat (311) has the hemispherical groove (3111) on its upper side. A cover plate (312) is provided on the pressure seat (311). The cover plate (312) is provided with a second through hole (3121) that mates with the spherical segment (3211). When the cover plate (312) is provided on the pressure seat (311), the spherical segment (3211) is locked in the hemispherical groove (3111), and the straight segment (3212) and part of the spherical segment (3211) extend out of the cover plate (312) from the second through hole (3121).

2. The device for detecting the sealing performance of a soft-seal plane of an air valve as described in claim 1, characterized in that, The pressure seat (311) is provided with a plurality of first through holes (3112) and a guide hole (3113) spaced apart along the circumference. The guiding and stabilizing mechanism (2) includes: The same number of mounting screws (21) as the first through hole (3112) are provided. One end of the mounting screw (21) passes through the first through hole (3112), and the other end is connected to the mounting base (1). The diameter of the mounting screw (21) is smaller than the diameter of the first through hole (3112). The guide rod (22) includes a guide section (221) and a first connecting section (222) and a second connecting section (223) disposed at both ends of the guide section (221). The guide section (221) passes through the guide hole (3113), the first connecting section (222) extends out of the guide hole (3113), and the second connecting section (223) is connected to the mounting base (1). The diameter of the guide section (221) matches the diameter of the guide hole (3113).

3. The device for detecting the sealing performance of a soft-seal plane of an air valve as described in claim 2, characterized in that, The mounting screw (21) has a limiting nut (211) at one end that passes through the first through hole (3112). The limiting nut (211) is used to limit the height of the pressure seat (311) when it rises.

4. The device for detecting the sealing performance of a soft-seal plane of an air valve as described in claim 2, characterized in that, The pressure seat (311) is a stepped platform, including a first column (3114) and a second column (3115). The first column (3114) is located on the upper side of the second column (3115), and the diameter of the first column (3114) is smaller than the diameter of the second column (3115). Multiple first through holes (3112) and guide holes (3113) are all located on the second column (3115).

5. The device for detecting the sealing performance of a soft-seal plane of an air valve as described in claim 1, characterized in that, The drive mechanism (4) includes: The piston rod (41) is connected to the pressure plate (322); A drive cylinder (42), which is connected to the piston rod (41), is used to drive the piston rod (41) to extend or retract, so as to drive the flat pressing seat (6) away from or close to the workpiece (5) to be tested via the pressure plate (322).

6. The device for detecting the sealing performance of a soft-seal plane of an air valve as described in claim 1, characterized in that, The gas injection structure includes: An air injection inner tube (61) is disposed inside the plane clamping seat (6), and the air injection inner tube (61) is used to communicate with the workpiece (5) to be tested; A branch pipe (62) is connected to the inner air injection pipe (61) and is used to inject air into the inner air injection pipe (61).

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