Air tightness detection device for valve cover

Abstract

The utility model relates to an air tightness detection device for a valve cover. The air tightness detection device comprises a support, a supporting seat, a plurality of hole plugging members and an upper pressing member. The supporting seat is arranged on the bottom upper surface of the bracket; a profiling groove is formed in the upper surface of the supporting seat; a first sealing ring is arranged at the edge of the inner wall of the profiling groove; a drainage inlet is formed in the bottom of the profiling groove, a drainage channel is arranged in the supporting seat, a drainage outlet is formed in the side wall of the supporting seat, and the drainage channel is communicated with the drainage inlet and the drainage outlet. A plugging piece is arranged on the upper surface of the bottom of the bracket; the plugging piece comprises a first air cylinder and a plugging block; the first cylinder is arranged on the upper surface of the bottom of the bracket; the plugging block is fixed to the end of a piston rod of the first air cylinder. The hole blocking pieces are arranged on the upper surface of the bottom of the support. The upper pressing piece comprises a vertical lifting mechanism and an upper pressing seat; the vertical lifting mechanism is arranged at the top of the bracket; and the upper pressing seat is arranged at the moving end of the vertical lifting mechanism. According to the utility model, effective airtightness detection can be rapidly carried out on the valve cover, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection of metal parts, in particular to an air tightness detection device for a valve cover. Background Art

[0002] like Figure 1 As shown in the figure, it is a valve cover for new energy vehicles, which has air tightness requirements. The previous air tightness fixture is a cumbersome process for air inspection. Each hole of the valve cover must be screwed and sealed before the air tightness test can be started, which is inefficient. In addition, the screws are made of aluminum, which is easy to damage and the cost is high.

[0003] Therefore, it is desired to provide an airtightness detection device for a valve cover in order to solve the above-mentioned technical problems. Utility Model Content

[0004] The utility model aims to provide an airtightness detection device for a valve cover, which can quickly and effectively detect the airtightness of the valve cover and improve the detection efficiency.

[0005] In order to achieve the purpose of the above utility model, a gas tightness detection device for a valve cover is provided, comprising a bracket, a support seat, a plurality of hole blocking members and an upper pressing member;

[0006] The support seat is on the bottom upper surface of the bracket;

[0007] The upper surface of the support seat has a contoured groove, and the contoured groove is adapted to the shape of the valve cover to be tested;

[0008] A first sealing ring is provided at the inner wall edge of the profiling groove;

[0009] The bottom of the profiling groove is provided with a drainage inlet, the support seat is provided with a drainage channel, and the side wall of the support seat is provided with a drainage outlet, and the drainage channel is respectively connected with the drainage inlet and the drainage outlet;

[0010] A blocking piece is provided on the bottom upper surface of the bracket;

[0011] The blocking member comprises a first cylinder and a blocking block;

[0012] The first cylinder is arranged on the upper surface of the bottom of the bracket, and the piston rod of the first cylinder is horizontally directed to the drainage outlet;

[0013] The blocking block is fixed to the end of the piston rod of the first cylinder;

[0014] A plurality of hole blocking members are arranged on the upper surface of the bottom of the bracket and distributed around the support seat, and are used to block the holes of the valve cover; any hole blocking member is provided with an air inlet hole, and the air inlet hole corresponds to the through hole blocked on the valve cover;

[0015] The upper pressing member comprises a vertical lifting mechanism and an upper pressing seat;

[0016] The vertical lifting mechanism is arranged on the top of the bracket;

[0017] The upper pressing seat is arranged on the moving end of the vertical lifting mechanism and is located directly above the contoured groove. The bottom of the upper pressing seat is provided with a plurality of vertical rods.

[0018] Preferably, a groove is provided on the blocking block at a position directly opposite to the drainage outlet, a cylindrical protruding block is provided in the groove, and a second sealing ring is provided between the groove and the cylindrical protruding block.

[0019] Preferably, the bottom of the contoured groove is an inclined surface, and the drainage inlet is located at the lowest end of the inclined surface.

[0020] Preferably, the plurality of hole plugging members include a plurality of top hole plugging modules and a valve cover inlet plugging module;

[0021] The top hole blocking module comprises a rotating cylinder and a top hole blocking block;

[0022] The piston rod of the rotary cylinder is arranged vertically;

[0023] The top hole blocking block is arranged at the end of the piston rod of the rotary cylinder;

[0024] The valve cover inlet plugging module includes a second cylinder and a valve cover inlet plugging block;

[0025] The second cylinder is arranged on the bottom upper surface of the bracket, and the piston rod of the second cylinder is arranged horizontally and points to the inlet of the valve cover;

[0026] The valve cover inlet block is fixed to the end of the piston rod of the second cylinder.

[0027] Preferably, the vertical lifting mechanism is a third cylinder.

[0028] Preferably, a support plate is provided in the contoured groove.

[0029] Compared with the prior art, the utility model of a valve cover airtightness detection device has the following advantages:

[0030] (1) The entire detection device can quickly and effectively perform air tightness detection on the valve cover, effectively improving the efficiency of air tightness detection and ensuring the accuracy of air tightness detection on the valve cover;

[0031] (2) A drainage inlet is provided at the bottom of the profiling groove, a drainage channel is provided in the support seat, and a drainage outlet is provided on the side wall of the support seat, wherein the drainage channel is respectively connected with the drainage inlet and the drainage outlet; a plugging piece is provided on the bracket, and after the airtightness test is completed, the water remaining in the profiling groove can be quickly and effectively drained to avoid affecting the subsequent test;

[0032] (3) Simple structure and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the valve cover in the background technology;

[0034] Figure 2 The structure of a valve cover airtightness detection device of this embodiment is shown in FIG. Figure 1 ;

[0035] Figure 3 It is a schematic diagram of the structure in which the hole blocking member in this embodiment is arranged on the bottom upper surface of the bracket;

[0036] Figure 4 is a cross-sectional view of the support base in this embodiment;

[0037] Figure 5 Schematic diagram of the structure of the plugging member in this embodiment;

[0038] Figure 6 This is a schematic diagram of the working state of an air tightness detection device for a valve cover according to this embodiment. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] like Figure 2 As shown, an air tightness detection device for a valve cover of the utility model comprises a bracket 1, a support seat 2, a plurality of hole blocking members and an upper pressing member.

[0041] like Figure 3 As shown, the support seat 2 is on the bottom upper surface of the bracket 1; the upper surface of the support seat 2 has a contoured groove 3, and the contoured groove 3 is adapted to the shape of the valve cover to be detected; a first sealing ring (not shown in the figure) is provided at the inner wall edge of the contoured groove 3.

[0042] like Figure 4 As shown, the bottom of the contoured groove 3 has a drainage inlet 4, the support seat 2 is provided with a drainage channel 5, and the side wall of the support seat 2 has a drainage outlet 6, and the drainage channel 5 is connected to the drainage inlet 4 and the drainage outlet 6 respectively.

[0043] like Figure 3As shown, a blocking piece is provided on the bottom upper surface of the bracket 1; the blocking piece includes a first cylinder 7 and a blocking block 8; the first cylinder 7 is arranged on the bottom upper surface of the bracket 1, and the piston rod of the first cylinder 7 is horizontally directed to the drainage outlet 6; the blocking block 8 is fixed to the end of the piston rod of the first cylinder 7, and is used to block the drainage outlet 6.

[0044] In this embodiment, if Figure 5 As shown, a groove 9 is provided on the plugging block 8 at a position directly opposite to the drain outlet, a cylindrical protrusion block 10 is provided in the groove 9, and a second sealing ring (not shown in the figure) is provided between the groove and the cylindrical protrusion block; with such a configuration, the drain outlet 6 is effectively sealed when the valve cover is subjected to an airtightness test, thereby ensuring the accuracy of the valve cover sealing test.

[0045] In this embodiment, the bottom of the profiling groove 3 is an inclined surface, and the drainage inlet 4 is located at the lowest end of the inclined surface, so that the water remaining in the profiling groove 3 can be completely drained after the detection is completed.

[0046] Several of the hole blocking members are arranged on the bottom upper surface of the bracket 1 and distributed around the support seat 2 to block the holes of the valve cover. Any hole blocking member is provided with an air inlet hole, which corresponds to the through hole blocked on the valve cover.

[0047] Specifically, in this embodiment, the plurality of hole blocking parts include a plurality of top hole blocking modules and a valve cover inlet blocking module; the top hole blocking module includes a rotating cylinder 11 and a top hole blocking block 12; the piston rod of the rotating cylinder 11 is vertically arranged; the top hole blocking block 12 is arranged at the end of the piston rod of the rotating cylinder 11.

[0048] The valve cover inlet plugging module includes a second cylinder 13 and a valve cover inlet blocking block 14; the second cylinder 13 is arranged on the bottom upper surface of the bracket 1, and the piston rod of the second cylinder 13 is horizontally arranged and points to the inlet of the valve cover; the valve cover inlet blocking block 14 is fixed to the end of the piston rod of the second cylinder 13, and is used to seal the inlet of the valve cover during airtightness detection.

[0049] The upper pressing member includes a vertical lifting mechanism and an upper pressing seat 16; the vertical lifting mechanism is arranged on the top of the bracket 1; the upper pressing seat 16 is arranged on the moving end of the vertical lifting mechanism and is located directly above the profiling groove 3, and the bottom of the upper pressing seat 16 has a plurality of vertical rods 17, which are used to press and fix the valve cover to be tested for airtightness on the profiling groove 3. In this embodiment, the vertical lifting mechanism is the third cylinder 15.

[0050] In this embodiment, if Figure 4As shown, a support plate 18 is provided in the contoured groove 3 for supporting the inner wall of the valve cover to prevent it from being crushed when the upper pressing piece is in operation.

[0051] like Figure 6 As shown, the valve cover 19 to be tested is first placed on the contoured groove 3, and the rotating cylinder 11, the first cylinder 7, the second cylinder 13 and the third cylinder 15 are started to effectively block the through hole on the valve cover 19 and effectively fix the valve cover 19. Then, the entire airtightness testing device is placed in water through an external driving device, and gas is introduced through the air inlet on the plugging member, and the pressure is maintained for a period of time to observe whether there are bubbles in the water and whether the air pressure decreases after maintaining the pressure for a period of time.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An airtightness detection device for a valve cover, characterized in that: It includes a bracket, a support seat, a number of hole blocking parts and an upper pressing part; The support seat is on the bottom upper surface of the bracket; The upper surface of the support seat has a contoured groove, and the contoured groove is adapted to the shape of the valve cover to be tested; A first sealing ring is provided at the inner wall edge of the profiling groove; The bottom of the profiling groove is provided with a drainage inlet, the support seat is provided with a drainage channel, the side wall of the support seat is provided with a drainage outlet, and the drainage channel is respectively connected with the drainage inlet and the drainage outlet; A blocking piece is provided on the bottom upper surface of the bracket; The blocking member comprises a first cylinder and a blocking block; The first cylinder is arranged on the upper surface of the bottom of the bracket, and the piston rod of the first cylinder is horizontally directed to the drainage outlet; The blocking block is fixed to the end of the piston rod of the first cylinder; A plurality of hole blocking members are arranged on the bottom upper surface of the bracket and distributed around the support seat, and are used to block the holes of the valve cover; any hole blocking member is provided with an air inlet hole, and the air inlet hole corresponds to the through hole blocked on the valve cover; The upper pressing member comprises a vertical lifting mechanism and an upper pressing seat; The vertical lifting mechanism is arranged on the top of the bracket; The upper pressing seat is arranged on the moving end of the vertical lifting mechanism and is located directly above the contoured groove. The bottom of the upper pressing seat is provided with a plurality of vertical rods.

2. A valve cover airtightness detection device as claimed in claim 1, characterized in that: A groove is provided on the blocking block at a position directly facing the drainage outlet, a cylindrical protruding block is provided in the groove, and a second sealing ring is provided between the groove and the cylindrical protruding block.

3. The air tightness detection device for a valve cover according to claim 1, characterized in that: The bottom of the contoured groove is an inclined surface, and the drainage inlet is located at the lowest end of the inclined surface.

4. A valve cover airtightness detection device according to any one of claims 1 to 3, characterized in that: The plurality of hole plugging components include a plurality of top hole plugging modules and a valve cover inlet plugging module; The top hole blocking module comprises a rotating cylinder and a top hole blocking block; The piston rod of the rotary cylinder is arranged vertically; The top hole blocking block is arranged at the end of the piston rod of the rotary cylinder; The valve cover inlet plugging module includes a second cylinder and a valve cover inlet plugging block; The second cylinder is arranged on the bottom upper surface of the bracket, and the piston rod of the second cylinder is arranged horizontally and points to the inlet of the valve cover; The valve cover inlet block is fixed to the end of the piston rod of the second cylinder.

5. A valve cover airtightness detection device according to any one of claims 1 to 3, characterized in that: The vertical lifting mechanism is a third cylinder.

6. A valve cover airtightness detection device according to any one of claims 1 to 3, characterized in that: A supporting plate is arranged in the contoured groove.

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