Inflating valve air tightness testing mechanism

Abstract

The air tightness testing mechanism comprises a bottom plate, and further comprises a connecting frame, observation plates, a connecting assembly and a pressure testing assembly, the connecting frame is fixedly connected to the upper portion of the bottom plate, a detection hole is formed in the side wall of the side, adjacent to an opening, of the connecting frame, and the observation plates are fixedly connected to the openings in the two sides of the connecting frame; the connecting frame and the observation plate form a pressure cavity, the connecting assembly is arranged on the side wall of the side, adjacent to the observation plate, of the connecting frame and communicated with the pressure cavity through the detection hole, and the pressure testing assembly is arranged on the upper portion of the connecting frame and used for providing detection pressure for the interior of the pressure cavity. The utility model belongs to the technical field of automobile parts, and particularly relates to a device for detecting the sealing performance of inflating valves with the same diameter and different screw pitches, increasing inflating valve sealing performance detection modes, outputting an air source through a pressure detection assembly, supplying air into a pressure cavity and a connector, and achieving the sealing performance detection of the inflating valves in different modes. And the air tightness testing mechanism for the inflating valve is convenient for direct observation during air tightness detection.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, and in particular relates to a valve airtightness testing mechanism. Background Art

[0002] The function of the valve stem is to inflate and deflate the tire, and to maintain the seal of the tire after it is inflated.

[0003] The sizes of automobile valves include Schrader valves and standard valves. Among them, standard valves can be divided into three types: coarse thread, fine thread and super fine thread. The same nominal diameter has a variety of pitches;

[0004] The existing valve seal air tightness testing device has a slow valve seal installation process and is not convenient for directly observing the seal during valve seal testing. Utility Model Content

[0005] The technical problem to be solved by the utility model is to increase the detection method of the valve mouth, improve the detection efficiency of the valve mouth, and facilitate the naked eye observation of the sealing performance of the valve mouth.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a valve nozzle air tightness testing mechanism, including a base plate, and also including a connecting frame, an observation plate, a connecting assembly and a pressure testing assembly, the connecting frame is fixedly connected to the upper part of the base plate, the connecting frame is arranged in an n shape, and a side wall of one side adjacent to the opening of the connecting frame is provided with a detection hole, and the detection holes are arranged at uniform intervals along the height direction of the support frame, the observation plate is fixedly connected to the openings on both sides of the connecting frame, the connecting frame and the observation plate form a pressure chamber, the connecting assembly is arranged on the side wall of the connecting frame adjacent to the observation plate, and is connected to the pressure chamber through the detection hole, and the pressure testing assembly is arranged on the upper part of the connecting frame for providing detection pressure to the inside of the pressure chamber.

[0007] Furthermore, the connecting assembly includes a connecting ring and a sealing plug, one end of the connecting ring is fixedly connected to the side wall of the connecting frame, the connecting ring is coaxially arranged with the detection hole, the connecting ring is connected to the pressure chamber through the detection hole, and the sealing plug is threadedly connected to the connecting ring.

[0008] Furthermore, the inner side walls of the connecting rings arranged at equal intervals have internal threads with different pitches.

[0009] Furthermore, the pressure testing assembly includes a support plate, a pressure box and an air pump, the support plate is fixedly connected to both sides of the upper part of the connecting frame, the pressure box is fixedly connected to the symmetrical upper part of the support plate, the air pump is installed on the upper part of the pressure box, the air outlet end of the air pump is connected to the interior of the pressure box, the bottom of the pressure box is connected to a pressure pipe, the other end of the pressure pipe passes through the upper part of the connecting frame and extends into the pressure chamber, the middle section of the pressure pipe is provided with a switch valve 1, and the switch valve is located between the symmetrical support plates.

[0010] Furthermore, the side wall of the pressure box is connected with an air outlet pipe, an end of the air outlet pipe away from the pressure box is provided with a connector, and a second switch valve is provided in the middle section of the air outlet pipe.

[0011] Furthermore, a liquid injection hole is formed on a side wall of the connecting frame away from the detection hole, and a plug is connected to the inner thread of the liquid injection hole.

[0012] After adopting the above structure, the beneficial effects of the utility model are as follows: for the sealing detection of valve nozzles with the same diameter but different pitches, a valve nozzle sealing detection method is added, and the pressure testing component is used as the air source to supply air to the pressure chamber and the connecting head respectively, thereby realizing sealing detection of the valve nozzle in different ways, improving the detection efficiency, and facilitating direct observation during sealing detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] Figure 1 This is a schematic diagram of the overall structure of a valve air tightness testing mechanism proposed by the utility model;

[0015] Figure 2 A schematic diagram of a blocking structure of a valve air tightness testing mechanism proposed by the utility model;

[0016] Figure 3 The utility model provides a schematic diagram of the internal structure of a valve air tightness testing mechanism.

[0017] In the attached drawings: 1. base plate, 2. connecting frame, 3. observation plate, 4. connecting assembly, 5. pressure test assembly, 6. detection hole, 7. pressure chamber, 8. connecting ring, 9. sealing plug, 10. supporting plate, 11. pressure box, 12. air pump, 13. pressure pipe, 14. switch valve 1, 15. air outlet pipe, 16. connecting head, 17. switch valve 2, 18. liquid injection hole, 19. plugging. DETAILED DESCRIPTION

[0018] like Figure 1-3As shown, a valve mouth air tightness testing mechanism includes a base plate 1, and also includes a connecting frame 2, an observation plate 3, a connecting assembly 4 and a pressure testing assembly 5. The connecting frame 2 is fixedly connected to the upper part of the base plate 1, and the connecting frame 2 is arranged in an n shape. A detection hole 6 is opened on the side wall of the connecting frame 2 adjacent to the opening, and the detection holes 6 are arranged at uniform intervals along the height direction of the support frame. The observation plate 3 is fixedly connected to the openings on both sides of the connecting frame 2, and the connecting frame 2 and the observation plate 3 form a pressure chamber 7. The connecting assembly 4 is arranged on the side wall of the connecting frame 2 adjacent to the observation plate 3, and is connected to the pressure chamber 7 through the detection hole 6. The pressure testing assembly 5 is arranged on the upper part of the connecting frame 2, and is used to provide detection pressure to the inside of the pressure chamber 7.

[0019] like Figure 1 and Figure 3 As shown, in order to realize the sealing test of the valve mouth, the valve mouth is provided with air sources of different paths, and the pressure test assembly 5 includes a support plate 10, a pressure box 11 and an air pump 12. The support plate 10 is fixedly connected to both sides of the upper part of the connecting frame 2, the pressure box 11 is fixedly connected to the upper part of the symmetrical support plate 10, and the air pump 12 is installed on the upper part of the pressure box 11. The air outlet end of the air pump 12 is connected to the inside of the pressure box 11. The air pump 12 extracts external gas and pumps gas into the pressure box 11, and uses the connecting box to disperse the gas.

[0020] In order to facilitate the connection and fixation of the valve, the connection assembly 4 includes a connection ring 8 and a sealing plug 9. One end of the connection ring 8 is fixedly connected to the side wall of the connecting frame 2. The connection ring 8 is coaxially arranged with the detection hole 6. The connection ring 8 is connected to the pressure chamber 7 through the detection hole 6. The sealing plug 9 is threadedly connected to the connection ring 8. The inner side walls of the connection ring 8 arranged at equal intervals adopt internal threads of different pitches, which are used for threaded connection and fixation of valves with different pitches.

[0021] In order to realize the gas delivery in different paths, the bottom of the pressure box 11 is connected with a pressure pipe 13, the other end of the pressure pipe 13 passes through the upper part of the connecting frame 2 and extends into the pressure chamber 7, and the middle section of the pressure pipe 13 is provided with a switch valve 14, which is located between the symmetrical support plates 10;

[0022] The side wall of the pressure box 11 is connected to an air outlet pipe 15, an end of the air outlet pipe 15 away from the pressure box 11 is provided with a connector 16, and a switch valve 2 17 is provided in the middle section of the air outlet pipe 15;

[0023] The gas is dispersed through the pressure pipe 13 and the air outlet pipe 15 to realize the air supply in different paths. One end of the valve mouth can be threadedly connected to the connector 16, one of the sealing plugs 9 is removed, and the other end of the valve mouth is inserted into the detection hole 6 and contacts with the water inside the pressure chamber 7. After the air is supplied through the air outlet pipe 15, the switch valve 2 17 is opened to observe whether there are bubbles in the pressure chamber 7;

[0024] Or insert one end of the valve mouth into the detection hole 6, and directly thread the valve mouth into the connecting ring 8 to fix it, open the switch valve 14, inject air into the pressure chamber 7 through the pressure pipe 13, increase the internal pressure of the pressure chamber 7, and observe whether the valve mouth leaks outward.

[0025] A liquid injection hole 18 is formed on the side wall of the connecting frame 2 away from the detection hole 6 , and a plug 19 is threadedly connected to the liquid injection hole 18 for injecting liquid water into the pressure chamber 7 , and the plug 19 makes it sealed.

[0026] When in use, the operator removes the plug 19, fills the pressure chamber 7 with water through the injection hole 18, and seals the injection hole 18 with the plug 19. In the initial state, the switch valve 14 and the switch valve 2 17 are both in the closed state;

[0027] During the test, according to the thread pitch of the valve, select the corresponding connecting ring 8, remove the sealing plug 9, connect the valve thread into the connecting ring 8, start the air pump 12, the air pump 12 delivers gas to the pressure box 11, open the switch valve 14, the gas enters the pressure chamber 7, opens the rubber valve and acts on one end of the valve, and observes whether there is water seepage from the other end of the valve;

[0028] One end of the valve can also be threaded into the connector 16, one of the sealing plugs 9 can be removed, and the other end of the valve can be inserted into the detection hole 6 so as to contact the water inside the pressure chamber 7. After supplying air through the air outlet pipe 15, the switch valve 17 can be opened to observe whether there are bubbles in the pressure chamber 7.

[0029] When the sealing plug 9 is removed, the liquid in the pressure chamber 7 will not be ejected due to the action of the rubber valve, and the injection hole 18 can be used to release the pressure inside.

[0030] Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the attached claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the scope of protection of the utility model.

Claims

1. A valve air tightness testing mechanism, comprising a base plate, characterized in that: It also includes a connecting frame, an observation plate, a connecting assembly and a pressure testing assembly, wherein the connecting frame is fixedly connected to the upper part of the bottom plate, the connecting frame is arranged in an n-shape, a side wall of one side of the adjacent opening of the connecting frame is provided with a detection hole, and the detection holes are arranged at uniform intervals along the height direction of the support frame, the observation plate is fixedly connected to the openings on both sides of the connecting frame, the connecting frame and the observation plate form a pressure chamber, the connecting assembly is arranged on a side wall of the connecting frame adjacent to the observation plate, and is connected to the pressure chamber through the detection hole, and the pressure testing assembly is arranged on the upper part of the connecting frame for providing detection pressure to the inside of the pressure chamber.

2. A valve air tightness testing mechanism according to claim 1, characterized in that: The connecting assembly includes a connecting ring and a sealing plug. One end of the connecting ring is fixedly connected to the side wall of the connecting frame. The connecting ring is coaxially arranged with the detection hole. The connecting ring is connected to the pressure chamber through the detection hole. The sealing plug is threadedly connected in the connecting ring.

3. A valve air tightness testing mechanism according to claim 2, characterized in that: The inner side walls of the connecting rings arranged at equal intervals adopt internal threads with different pitches.

4. The air valve air tightness testing mechanism according to claim 1, characterized in that: The pressure testing assembly includes a support plate, a pressure box and an air pump, wherein the support plate is fixedly connected to both sides of the upper part of the connecting frame, the pressure box is fixedly connected to the symmetrical upper part of the support plate, the air pump is installed on the upper part of the pressure box, the air outlet end of the air pump is connected to the interior of the pressure box, the bottom of the pressure box is connected to a pressure pipe, the other end of the pressure pipe passes through the upper part of the connecting frame and extends into the pressure chamber, and a switch valve is provided in the middle section of the pressure pipe, and the switch valve is located between the symmetrical support plates.

5. A valve air tightness testing mechanism according to claim 4, characterized in that: The side wall of the pressure box is connected with an air outlet pipe, an end of the air outlet pipe away from the pressure box is provided with a connector, and the middle section of the air outlet pipe is provided with a second switch valve.

6. The air valve air tightness testing mechanism according to claim 1, characterized in that: A liquid injection hole is formed on a side wall of the connecting frame away from the detection hole, and a plug is connected to the inner thread of the liquid injection hole.

Images