A leak detection tool for automobile expansion valve

Abstract

The utility model discloses a leak detection tool for automobile expansion valves, including a bottom plate, which is fixedly installed in a vacuum box, and a positioning assembly, a first sealing assembly, a second sealing assembly, and a third sealing assembly are fixedly installed on the bottom plate; the first sealing assembly, the second sealing assembly, and the third sealing assembly are distributed around the positioning assembly, and the positions of the first sealing assembly, the second sealing assembly, and the third sealing assembly are adapted to the position of a workpiece in the positioning assembly, so that the first sealing assembly seals the double openings at the end of the workpiece, the second sealing assembly seals the three openings on the side of the workpiece, and the third sealing assembly seals the single opening on the side of the workpiece. The utility model adopts three sealing seats to seal the opening of the automobile expansion valve, is easy to use, and can quickly seal the workpiece with reliable sealing, meeting the needs of rapid leak detection in modern industrial production lines.

Description

Technical Field

[0001] The utility model relates to a leak detection technology, in particular to a leak detection tool for an automobile expansion valve. Background Art

[0002] With the rise of the automobile industry, the research and development and manufacturing technology of automobile air-conditioning expansion valves have become an important part of automobile development. The expansion valve group is an important component of the refrigeration device and one of the four basic equipment in the refrigeration system. It realizes the pressure drop from the condensing pressure to the evaporation pressure, and controls the flow rate of the refrigerant at the same time. The working performance of the expansion valve directly determines the operating performance of the entire system. The traditional detection method is water inspection, which is to rely on workers to block the water inlet and outlet with their hands, put it in water, fill the bottom of the workpiece with a certain pressure of gas, and detect whether there are bubbles at various positions of the workpiece to determine the leakage. This detection method is inefficient and consumes a lot of manpower and material resources. The sealing effect of the manual compression method is also difficult to guarantee. Therefore, a stable, easy-to-operate and automatically sealed gas detection tooling is needed to solve this problem. Utility Model Content

[0003] In order to solve the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide an automobile expansion valve leak detection tool, which has a simple structure and is easy to use, and meets the needs of rapid leak detection in modern industrial production lines.

[0004] The utility model solves the technical problem by adopting the following technical solution: an automobile expansion valve leak detection tool, comprising a bottom plate, the bottom plate is fixedly installed in a vacuum box, and a positioning assembly, a first sealing assembly, a second sealing assembly and a third sealing assembly are fixedly installed on the bottom plate;

[0005] The first sealing component, the second sealing component and the third sealing component are distributed around the positioning component, and the positions of the first sealing component, the second sealing component and the third sealing component are adapted to the positions of the workpiece in the positioning component, so that the first sealing component seals the double openings at the end of the workpiece, the second sealing component seals the three openings on the side of the workpiece, and the third sealing component seals the single opening on the side of the workpiece.

[0006] Optionally, the positioning assembly includes a first limiting seat, a second limiting seat, a first supporting seat, an inflatable seat and a positioning seat;

[0007] The first limiting seat, the inflating seat, the first supporting seat, the positioning seat and the second limiting seat are arranged in sequence, and a positioning pin cooperating with the workpiece is provided in the positioning seat.

[0008] Optionally, the first sealing assembly includes a first fixed plate, a first linear guide rail, a second support seat, a first operating handle, a first push rod, a first sealing seat, a first sliding seat and a first sealing head;

[0009] The first linear guide and the second support seat are fixedly installed in the first fixed plate, the first operating handle is installed in the second support seat, one end of the first push rod is connected to the first operating handle, the other end of the first push rod is connected to the first sealing seat, the bottom of the first sealing seat is fixedly connected to the first sliding seat, the first sliding seat is slidably connected in the first linear guide, and the first sealing head is fixedly installed on the side of the first sealing seat close to the positioning assembly.

[0010] Optionally, the second sealing assembly includes a second fixed plate, a second linear guide rail, a third support seat, a second operating handle, a second push rod, a second sealing seat, a second sliding seat and a second sealing head;

[0011] The second linear guide and the third support seat are fixedly installed in the second fixed plate, the second operating handle is installed in the third support seat, one end of the second push rod is connected to the second operating handle, the other end of the second push rod is connected to the second sealing seat, the bottom of the second sealing seat is fixedly connected to the second sliding seat, the second sliding seat is slidably connected in the second linear guide, and the second sealing head is fixedly installed on the side of the second sealing seat close to the positioning assembly.

[0012] Optionally, the third sealing assembly includes a fourth support seat and a third operating handle, a third push rod, a guide block, a third sealing seat, and a third sealing head;

[0013] The third operating handle and the guide block are fixedly mounted on the fourth supporting seat, a sliding groove is provided in the middle of the third push rod, the sliding groove is slidably connected to the guide block, and the third operating handle is hinged to the third push rod through a connecting rod, the third sealing seat is fixedly mounted on an end of the third push rod away from the third operating handle, and the third sealing head is fixedly mounted on the side of the third sealing seat close to the workpiece.

[0014] By adopting the above technical scheme, the utility model has the following beneficial effects: the utility model adopts three sealing seats to seal the opening of the automobile expansion valve, is easy to use and operate, can quickly seal the workpiece, and the sealing is reliable, meeting the needs of rapid leak detection in modern industrial production lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the positioning component of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the first sealing component of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the second sealing component of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the third sealing component of the utility model. DETAILED DESCRIPTION

[0020] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] like Figure 1 As shown, the utility model discloses a leak detection tool for automobile expansion valve, including a bottom plate 100, the bottom plate 100 is fixedly installed in a vacuum box, and a positioning assembly 200, a first sealing assembly 300, a second sealing assembly 400 and a third sealing assembly 500 are fixedly installed on the bottom plate 100. Among them, the first sealing assembly 300, the second sealing assembly 400 and the third sealing assembly 500 are distributed around the positioning assembly 200, and the positions of the first sealing assembly 300, the second sealing assembly 400 and the third sealing assembly 500 are adapted to the position of the workpiece in the positioning assembly 200, so that the first sealing assembly 300 seals the double openings at the end of the workpiece, the second sealing assembly 400 seals the three openings at the side of the workpiece, and the third sealing assembly 500 seals the single opening at the side of the workpiece.

[0023] Specifically, if Figure 2 As shown, the positioning assembly 200 includes a first limiting seat 210, a second limiting seat 220, a first supporting seat 230, an inflatable seat 240 and a positioning seat 250. Among them, the first limiting seat 210, the inflatable seat 240, the first supporting seat 230, the positioning seat 250 and the second limiting seat 220 are arranged in sequence, and a positioning pin that cooperates with the workpiece is provided in the positioning seat 250 to facilitate positioning the workpiece and place the workpiece in an accurate position. The positioning assembly 200 of the utility model adopts a split structure, and each part (the first limiting seat 210, the second limiting seat 220, the first supporting seat 230, the inflatable seat 240 and the positioning seat 250) is separately and fixedly connected to the base plate 100, so as to adjust the size of the positioning assembly 200 to adapt to workpieces of different specifications.

[0024] like Figure 3As shown, the first sealing assembly 300 includes a first fixed plate 310, a first linear guide rail 320, a second support seat 330, a first operating handle 340, a first push rod 350, a first sealing seat 360, a first sliding seat 370 and a first sealing head 380. The first linear guide rail 320 and the second support seat 330 are both fixedly installed in the first fixed plate 310, the first operating handle 340 is installed in the second support seat 330, one end of the first push rod 350 is connected to the first operating handle 340, the other end of the first push rod 350 is connected to the first sealing seat 360, the first sealing seat 360 is fixedly connected to the first sliding seat 370, the first sliding seat 370 is slidably connected in the first linear guide rail 320, and the first sealing head 380 is fixedly installed on the side of the first sealing seat 360 close to the positioning assembly 200.

[0025] In the present utility model, the first sealing assembly 300 is used to seal the double openings at the ends of the workpiece, so two first sealing heads 380 can be provided. When the first sealing assembly 300 seals the workpiece, the first operating handle 340 is operated, and the first operating handle 340 drives the first push rod 350 to move toward the direction of the positioning assembly 200, and the first sealing seat 360 moves along the first linear guide 320 toward the direction of the positioning assembly 200 under the action of the first sliding seat 370, so that the first sealing head 380 seals the double openings of the workpiece.

[0026] like Figure 4 As shown, the second sealing assembly 400 includes a second fixed plate 410, a second linear guide 420, a third support seat 430, a second operating handle 440, a second push rod 450, a second sealing seat 460, a second sliding seat 470 and a second sealing head 480. The second linear guide 420 and the third support seat 430 are fixedly installed in the second fixed plate 410, the second operating handle 440 is installed in the third supporting seat 430, one end of the second push rod 450 is connected to the second operating handle 440, the other end of the second push rod 450 is connected to the second sealing seat 460, the second sealing seat 460 is fixedly connected to the second sliding seat 470, the second sliding seat 470 is slidably connected in the second linear guide 420, and the second sealing head 480 is fixedly installed on the side of the second sealing seat 460 close to the positioning assembly 200.

[0027] In the present invention, the second sealing assembly 400 is used to seal the three openings at the end of the workpiece, so three second sealing heads 480 can be provided. When the second sealing assembly 400 seals the workpiece, the second operating handle 440 is operated, and the second operating handle 440 drives the second push rod 450 to move toward the positioning assembly 200, and the second sealing seat 460 moves along the second linear guide rail 420 toward the positioning assembly 200 under the action of the second sliding seat 470, so that the second sealing head 480 seals the three openings of the workpiece.

[0028] like Figure 5 As shown, the third sealing assembly 500 includes a fourth support seat 510, a third operating handle 520, a third push rod 530, a guide block 540, a third sealing seat 550, and a third sealing head 560. The third operating handle 520 and the guide block 540 are fixedly mounted on the fourth support seat 510, a slide groove is provided in the middle of the third push rod 530, the slide groove is slidably connected with the guide block 540, and the third operating handle 520 is hinged to the third push rod 530 through a connecting rod 570, the third sealing seat 550 is fixedly mounted on one end of the third push rod 530 away from the third operating handle 520, and the third sealing head 560 is fixedly mounted on the side of the third sealing seat 550 close to the workpiece. In the utility model, the third sealing assembly 200 is used to seal a single opening of a workpiece, so the third sealing head 560 can be set as one.

[0029] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

[0030] Except for the technical features described in the specification, the other technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present utility model, the other technical features will not be described in detail here.

Claims

1. A leak detection tool for automobile expansion valve, characterized in that: It comprises a bottom plate, which is fixedly mounted in the vacuum box, and a positioning assembly, a first sealing assembly, a second sealing assembly and a third sealing assembly are fixedly mounted on the bottom plate; The first sealing component, the second sealing component and the third sealing component are distributed around the positioning component, and the positions of the first sealing component, the second sealing component and the third sealing component are adapted to the positions of the workpiece in the positioning component, so that the first sealing component seals the double openings at the end of the workpiece, the second sealing component seals the three openings on the side of the workpiece, and the third sealing component seals the single opening on the side of the workpiece.

2. The automobile expansion valve leak detection tool according to claim 1, characterized in that: The positioning assembly includes a first limiting seat, a second limiting seat, a first supporting seat, an inflatable seat and a positioning seat; The first limiting seat, the inflating seat, the first supporting seat, the positioning seat and the second limiting seat are arranged in sequence, and a positioning pin cooperating with the workpiece is provided in the positioning seat.

3. The automobile expansion valve leak detection tool according to claim 1, characterized in that: The first sealing assembly includes a first fixed plate, a first linear guide rail, a second support seat, a first operating handle, a first push rod, a first sealing seat, a first sliding seat and a first sealing head; The first linear guide and the second support seat are fixedly installed in the first fixed plate, the first operating handle is installed in the second support seat, one end of the first push rod is connected to the first operating handle, the other end of the first push rod is connected to the first sealing seat, the bottom of the first sealing seat is fixedly connected to the first sliding seat, the first sliding seat is slidably connected in the first linear guide, and the first sealing head is fixedly installed on the side of the first sealing seat close to the positioning assembly.

4. The automobile expansion valve leak detection tool according to claim 1, characterized in that: The second sealing assembly includes a second fixed plate, a second linear guide rail, a third support seat, a second operating handle, a second push rod, a second sealing seat, a second sliding seat and a second sealing head; The second linear guide and the third support seat are fixedly installed in the second fixed plate, the second operating handle is installed in the third support seat, one end of the second push rod is connected to the second operating handle, the other end of the second push rod is connected to the second sealing seat, the bottom of the second sealing seat is fixedly connected to the second sliding seat, the second sliding seat is slidably connected in the second linear guide, and the second sealing head is fixedly installed on the side of the second sealing seat close to the positioning assembly.

5. The automobile expansion valve leak detection tool according to claim 1, characterized in that: The third sealing assembly includes a fourth support seat and a third operating handle, a third push rod, a guide block, a third sealing seat, and a third sealing head; The third operating handle and the guide block are fixedly mounted on the fourth supporting seat, a sliding groove is provided in the middle of the third push rod, the sliding groove is slidably connected to the guide block, and the third operating handle is hinged to the third push rod through a connecting rod, the third sealing seat is fixedly mounted on an end of the third push rod away from the third operating handle, and the third sealing head is fixedly mounted on the side of the third sealing seat close to the workpiece.

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