Valve helium detection tool

Abstract

The utility model relates to the technical field of airtightness detection of valves, in particular to a helium detection tool for valves, which comprises a top plate, a bottom plate and two upright posts connected between the top plate and the bottom plate. The two stand columns are provided with linear bearings which support the pressing plate and drive the pressing plate to slide in the axial direction of the stand columns, the pressing plate and the bottom plate are arranged in parallel, a first sealing boss and a second sealing boss are arranged on the opposite faces of the pressing plate and the bottom plate, and sealing rings are arranged on the outer cylindrical faces of the first sealing boss and the second sealing boss. An air cylinder is arranged above the top plate, a driving rod of the air cylinder is connected with the pressing plate so as to drive the pressing plate to be close to the bottom plate in the vertical direction, and therefore the first sealing boss and the second sealing boss conduct two-way sealing on the hole of the valve body. Through the arrangement of the pressing plate, the bottom plate and the air cylinder and the two-way sealing of the first sealing boss and the second sealing boss, automatic sealing detection of the valve body is achieved, manual operation is not needed, time and labor are saved, batch operation is facilitated, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve airtightness detection, in particular to a valve helium detection tool. Background Art

[0002] Helium testing is a method of inspection in which the workpiece is evacuated and then filled with helium at a certain pressure. The helium pressure change in the workpiece is then detected using a helium mass spectrometer leak detector to determine whether the workpiece is qualified.

[0003] During the valve manufacturing process, helium inspection tooling is generally used to test the processed valves to improve product quality. However, existing helium inspection tooling is primarily a single-seal structure, requiring multiple seals to be assembled one by one before the helium inspection process can be performed. This is time-consuming and labor-intensive, making batch operation difficult and resulting in low production efficiency. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a helium inspection tool for valves, which effectively solves the problems in the background technology.

[0005] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is: a valve helium inspection tool, comprising: a top plate, a bottom plate and two columns connected between the top plate and the bottom plate;

[0006] The two columns are provided with linear bearings that support and drive the pressure plate to slide axially along the columns. The pressure plate is arranged parallel to the base plate, and a first sealing boss and a second sealing boss are provided on the opposing surfaces of the pressure plate and the base plate, and sealing rings are provided on the outer cylindrical surfaces of the first sealing boss and the second sealing boss;

[0007] A cylinder is provided above the top plate, and a driving rod of the cylinder is connected to the pressure plate to drive the pressure plate to approach the bottom plate in a vertical direction, so that the first sealing boss and the second sealing boss perform bidirectional sealing on the hole of the valve body.

[0008] Furthermore, a fixing block is provided on the pressure plate, and the fixing block includes an intermediate plate connected to the cylinder, and a force plate bent and extended toward the pressure plate along both sides of the intermediate plate, and the force plate is fixed on the pressure plate.

[0009] Furthermore, the pressure plate is provided with an avoidance hole.

[0010] Furthermore, two check hooks are provided on the bottom plate, and the two check hooks are symmetrically arranged on both sides of the valve body, and the two check hooks extend horizontal edges relative to each other at one end away from the bottom plate. The horizontal edges are located above the valve body to limit the upward movement of the valve body.

[0011] Furthermore, the distance between the horizontal edge and the bottom plate is greater than the height of the valve body.

[0012] Furthermore, a through groove is provided on the pressing plate.

[0013] Furthermore, a through hole communicating with the inner cavity of the valve body is provided on the second sealing boss, and an air inlet hole is provided on the bottom plate, and the air inlet hole is connected to the through hole.

[0014] Furthermore, two second sealing bosses are provided, and two channels are provided inside the bottom plate. The two channels are provided in a one-to-one correspondence with the through holes of the two second sealing bosses.

[0015] Furthermore, a plugging head is provided at the end of the channel communicating with the outside world.

[0016] Furthermore, a first sealing ring groove is provided on the bottom surface of the pressure plate at the position of the first sealing boss; and a second sealing ring groove is provided on the top surface of the bottom plate at the position of the second sealing boss.

[0017] The beneficial effects of the utility model are as follows: the utility model realizes automatic sealing detection of the valve body through the arrangement of the pressure plate, the base plate and the cylinder, and utilizes the bidirectional sealing of the first sealing boss and the second sealing boss, without the need for manual operation, saving time and effort, facilitating batch operation, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of a valve helium inspection tooling in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic structural diagram of a valve helium inspection tooling in an embodiment of the present utility model;

[0021] Figure 3 This is a structural diagram of the label suction and transmission mechanism in an embodiment of the present utility model;

[0022] Figure 4 This is a structural diagram of a label winding and pasting mechanism in an embodiment of the present utility model;

[0023] Figure 5 This is a structural diagram of a label pressing plate in an embodiment of the present utility model;

[0024] Figure 6 This is a structural diagram of the label peeling mechanism in an embodiment of the present utility model.

[0025] Figure markings: 01, valve body; 1, top plate; 2, bottom plate; 2a, air inlet; 2b, channel; 21, second sealing boss; 21a, through hole; 22, second sealing ring groove; 3, column; 4, pressure plate; 41, first sealing boss; 42, avoidance hole; 43, through groove; 44, first sealing ring groove; 5, linear bearing; 6, cylinder; 7, fixing block; 71, middle plate; 72, force plate; 8, check hook; 8a, horizontal edge. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] like Figures 1 to 6 The valve helium inspection tool shown includes: a top plate 1, a bottom plate 2 and two columns 3 connected between the top plate 1 and the bottom plate 2; the two columns 3 are provided with linear bearings 5 that support and drive the pressure plate 4 to slide axially along the columns 3, the pressure plate 4 is arranged parallel to the bottom plate 2, and a first sealing boss 41 and a second sealing boss 21 are provided on the opposite surfaces of the pressure plate 4 and the bottom plate 2, and sealing rings are provided on the outer cylindrical surfaces of the first sealing boss 41 and the second sealing boss 21; a cylinder 6 is provided above the top plate 1, and the driving rod of the cylinder 6 is connected to the pressure plate 4 to drive the pressure plate 4 to approach the bottom plate 2 in the vertical direction, so that the first sealing boss 41 and the second sealing boss 21 perform bidirectional sealing on the hole of the valve body 01.

[0030] This utility model utilizes the arrangement of the pressure plate 4, the base plate 2, and the cylinder 6, and utilizes the bidirectional sealing of the first sealing boss 41 and the second sealing boss 21 to achieve automatic seal detection of the valve body 01. This eliminates the need for manual operation, saves time and effort, facilitates batch operation, and improves production efficiency. Furthermore, the use of a bearing + guide rail structure ensures consistent and stable movement.

[0031] The utility model provides a fixing block 7 on the middle pressure plate 4, which includes an intermediate plate 71 connected to the cylinder 6 and a force plate 72 bent and extended along both sides of the intermediate plate 71 toward the pressure plate 4. The force plate 72 is fixed on the pressure plate 4.

[0032] A cavity structure is formed between the middle plate 71 and the pressure plate 4, and the two force plates 72 act on the position of the pressure plate 4 corresponding to the first sealing boss 41, increasing the force-bearing area of the pressure plate 4 and allowing the first sealing boss 41 to smoothly enter the hole of the valve body 01.

[0033] In a preferred embodiment of the present invention, a relief hole 42 is provided on the pressure plate 4 to avoid the position of the bolts on the valve body 01, thereby ensuring that the first sealing boss 41 is completely embedded in the valve body 01, thereby improving the reliability of the seal.

[0034] As the pressure plate 4 moves upward, the sealing cover on the equipment moves upward simultaneously. If the valve body 01 moves upward with the pressure plate 4, the presence of the sealing cover will make it difficult to remove the valve body 01. Therefore, two check hooks 8 are provided on the bottom plate 2, symmetrically arranged on either side of the valve body 01. The ends of the two check hooks 8, away from the bottom plate 2, extend with horizontal edges 8a located above the valve body 01 to limit the upward movement of the valve body 01. Using the check hooks 8 for material removal reduces the manual separation work.

[0035] As a preferred embodiment of the above solution, the distance between the horizontal edge 8a and the bottom plate 2 is greater than the height of the valve body 01. After the valve body 01 is separated from the second sealing boss 21 on the bottom plate 2, the check hook 8 is used to limit the valve body 01 from continuing to rise along with the pressure plate 4, thereby smoothly separating the valve body 01 from the first sealing boss 41, reducing the manual disassembly process and improving production efficiency.

[0036] In a further preferred embodiment, the pressure plate 4 is provided with a through groove 43 for the horizontal edge 8a to fit into. Due to the provision of the through groove 43, when the first sealing boss 41 on the pressure plate 4 moves downward to seal the valve body 01, the check hook 8 can pass through the through groove 43, thereby preventing the pressure plate 4 from not being pressed down into place and ensuring the reliability of the seal.

[0037] In a preferred embodiment of the present invention, a through hole 21a communicating with the inner cavity of the valve body 01 is provided on the second sealing boss 21, and an air inlet hole 2a is provided on the bottom plate 2, which is connected to the through hole 21a.

[0038] The air inlet hole 2a is set on the base plate 2, and helium is sent into the inner cavity of the valve body 01 through the through hole 21a in the second sealing boss 21, which can ensure that the helium can fully penetrate into the part that needs to be inspected, thereby improving the accuracy and reliability of the inspection; and by setting the through hole 21a on the second sealing boss 21 and connecting it to the air inlet hole 2a on the base plate 2, the tooling can be suitable for the inspection of valve bodies 01 of various types and specifications.

[0039] In the present invention, two second sealing bosses 21 are provided, and two channels 2b are provided inside the bottom plate 2. The two channels 2b are provided in one-to-one correspondence with the through holes 21a of the two second sealing bosses 21. Preferably, a plugging head is provided at the end of the channel 2b communicating with the outside world.

[0040] In a preferred configuration, a first sealing ring groove 44 is provided on the bottom surface of the pressure plate 4 at the location of the first sealing boss 41; a second sealing ring groove 22 is provided on the top surface of the base plate 2 at the location of the second sealing boss 21. By providing an end face sealing ring within the sealing ring groove, an end face seal is added to the hole of the valve body 01, achieving a double seal and improving the sealing effect.

[0041] Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and the specification are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve helium inspection tool, characterized in that: include: A top plate (1), a bottom plate (2), and two upright posts (3) connected between the top plate (1) and the bottom plate (2); The two columns (3) are provided with linear bearings (5) for supporting and driving the pressure plate (4) to slide axially along the columns (3); the pressure plate (4) is arranged parallel to the base plate (2); and a first sealing boss (41) and a second sealing boss (21) are provided on the opposing surfaces of the pressure plate (4) and the base plate (2); and sealing rings are provided on the outer cylindrical surfaces of the first sealing boss (41) and the second sealing boss (21); A cylinder (6) is provided above the top plate (1), and a driving rod of the cylinder (6) is connected to the pressure plate (4) to drive the pressure plate (4) to approach the bottom plate (2) in a vertical direction, so that the first sealing boss (41) and the second sealing boss (21) perform bidirectional sealing on the hole of the valve body (01).

2. The valve helium inspection tool according to claim 1, characterized in that: A fixing block (7) is provided on the pressure plate (4), and the fixing block (7) includes an intermediate plate (71) connected to the cylinder (6), and a force plate (72) bent and extended toward the pressure plate (4) along both sides of the intermediate plate (71), and the force plate (72) is fixed on the pressure plate (4).

3. The valve helium inspection tool according to claim 1, characterized in that: The pressing plate (4) is provided with an avoidance hole (42).

4. The valve helium inspection tool according to claim 1, characterized in that: Two check hooks (8) are provided on the bottom plate (2), and the two check hooks (8) are symmetrically arranged on both sides of the valve body (01), and the two check hooks (8) extend horizontal edges (8a) relatively from one end away from the bottom plate (2), and the horizontal edges (8a) are located above the valve body (01) to limit the upward movement of the valve body (01).

5. The valve helium inspection tool according to claim 4, characterized in that: The distance between the horizontal edge (8a) and the bottom plate (2) is greater than the height of the valve body (01).

6. The valve helium inspection tool according to claim 5, characterized in that: The pressing plate (4) is provided with a through slot (43).

7. The valve helium inspection tool according to claim 1, characterized in that: A through hole (21a) communicating with the inner cavity of the valve body (01) is provided on the second sealing boss (21), and an air inlet hole (2a) is provided on the bottom plate (2), and the air inlet hole (2a) is connected to the through hole (21a).

8. The valve helium inspection tool according to claim 7, characterized in that: Two second sealing bosses (21) are provided, and two channels (2b) are provided inside the bottom plate (2). The two channels (2b) are provided in a one-to-one correspondence with the through holes (21a) of the two second sealing bosses (21).

9. The valve helium inspection tool according to claim 8, characterized in that: A plug is provided at the end of the channel (2b) communicating with the outside world.

10. The valve helium inspection tool according to claim 1, characterized in that: The bottom surface of the pressure plate (4) is located at the position of the first sealing boss (41) and is provided with a first sealing ring groove (44); the top surface of the bottom plate (2) is located at the position of the second sealing boss (21) and is provided with a second sealing ring groove (22).

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