CN219075453U

CN219075453U - Diaphragm valve test fixture

Info

Publication number: CN219075453U
Application number: CN202320009463.9U
Authority: CN
Inventors: 王亮
Original assignee: Wuhan Feituoke Industry Co ltd
Current assignee: Wuhan Feituoke Industry Co ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-05-26
Anticipated expiration: 2033-01-03

Abstract

The utility model provides a diaphragm valve testing fixture which comprises a bottom plate, a base, a product placing block, an air channel block, a first sealing joint, a second sealing joint, a guide rail, a driving piece, a first air inlet joint and a second air inlet joint. According to the utility model, the base and the air channel block are arranged on two sides of the product placing block, the first sealing joint and the second sealing joint are respectively connected to the base and the air channel block, and the driving piece is utilized to push the air channel block to move, so that the first sealing joint and the second sealing joint are quickly connected with the port of the diaphragm valve. The utility model can test the inner leakage and the outer leakage simultaneously by one-time clamping, and has simple operation. The first sealing joint and the second sealing joint can be arranged in parallel to form a plurality of groups, so that a plurality of products can be tested at the same time, and the testing efficiency is improved.

Description

Diaphragm valve test fixture

Technical Field

The utility model belongs to the field of clamps, and particularly relates to a diaphragm valve testing clamp.

Background

Before leaving the factory, the diaphragm valve needs to be subjected to pressure test. At present, most manufacturers connect a single diaphragm valve to a pressure test bench for internal leakage and external leakage tests respectively when performing pressure tests. The operation is complex, and the test efficiency is low. Therefore, a fixture that is multi-station and capable of simultaneous leak and leak testing is needed.

Disclosure of Invention

The utility model aims to provide a diaphragm valve testing clamp, which solves the technical problems of complicated operation and low testing efficiency of the existing diaphragm valve pressure testing in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the diaphragm valve test fixture comprises a bottom plate, a base, a product placing block, an air channel block, a first sealing joint, a second sealing joint, a guide rail, a driving piece, a first air inlet joint and a second air inlet joint, wherein the base is arranged on the bottom plate, a first axial channel and a first radial channel which is vertically communicated with the first axial channel are arranged in the base, the first sealing joint is connected to the first radial channel, the first air inlet joint is connected to the inlet end of the first axial channel, the product placing block is arranged on the bottom plate, the product placing block is parallel to the base, the guide rail is arranged on the bottom plate and is vertical to the product placing block, the air channel block is arranged on the guide rail, a second axial channel and a second radial channel which is vertically communicated with the second axial channel are arranged in the air channel block, the second sealing joint is connected to the second radial channel, the second air inlet joint is connected to the inlet end of the second axial channel, the first sealing joint and the second sealing joint are parallel to the base, and the guide rail is fixed on the driving piece.

Preferably, the first sealing joint is connected to the first radial channel by a sliding shaft, the sliding shaft end being provided with a spring.

Preferably, a first annular groove is formed in one end, facing the second sealing joint, of the first sealing joint, a first sealing element is arranged in the first annular groove, a second annular groove is formed in one end, facing the first sealing joint, of the second sealing joint, and a second sealing element is arranged in the second annular groove.

Preferably, the base is provided with a first plug, the first plug is connected to the outlet end of the first axial channel, the air channel block is provided with a second plug, and the second plug is connected to the outlet end of the second axial channel.

Preferably, a steel pipe is arranged in the second axial passage, and a side hole is arranged on one side of the steel pipe facing the second sealing joint.

Preferably, the driving member is a quick clamp.

Preferably, handles are arranged on two sides of the bottom plate, and the handles are fixed on the bottom plate through handle bases.

Preferably, a foot pad shock absorber is arranged below the bottom plate.

Compared with the prior art, the utility model has the beneficial effects that: through setting up base and gas circuit piece in the product place the piece both sides, set up first seal joint and second seal joint on base and the gas circuit piece respectively, utilize the driving piece to promote the gas circuit piece motion to make first seal joint and second seal joint quick and diaphragm valve port's connection. The utility model can test the inner leakage and the outer leakage simultaneously by one-time clamping, and has simple operation. The first sealing joint and the second sealing joint can be arranged in parallel to form a plurality of groups, so that a plurality of products can be tested at the same time, and the testing efficiency is improved.

Drawings

FIG. 1 is an exploded perspective view of the present utility model;

FIG. 2 is a perspective view of the overall structure of the present utility model;

FIG. 3 is a cross-sectional view of the present utility model;

in the figure: 1. a bottom plate; 2. a base; 3. a product placement block; 4. the air path block; 5. a first sealing joint; 6. a second sealing joint; 7. a guide rail; 8. a driving member; 9. a first air inlet joint; 10. a first axial passage; 11. a first radial passage; 12. a sliding shaft; 13. a spring; 14. an end cap; 15. an end cover sealing ring; 16. a sliding shaft sealing ring; 17. a first plug; 18. a first annular groove; 19. a first seal; 20. a seal; 21. a second annular groove; 22. a second seal; 23. a seal; 24. a second air inlet joint; 25. a steel pipe; 26. a second plug; 27. a second axial passage; 28. a second radial passage; 29. a side hole; 30. a connecting plate; 31. a handle; 32. a handle seat; 33. foot pad shock absorber; 34. a diaphragm valve; 35. an opening; 36. rectangular grooves; 37. a guide rail groove; 38. a T-shaped groove; 39. a slide block; 40. and (5) a shaft shoulder.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhanging, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

As shown in fig. 1-3, the diaphragm valve testing fixture of this embodiment includes a base plate 1, a base 2, a product placement block 3, an air passage block 4, a first sealing joint 5, a second sealing joint 6, a guide rail 7, a driving member 8, a first air inlet joint 9, and a second air inlet joint 24. The base plate 1 has a square plate shape, and one end edge thereof is provided with an opening 35. The base 2 is rectangular and is fixed in the opening 35 of the base plate 1 by screws. The base 2 is internally provided with a first axial passage 10 along its axial direction, and a first radial passage 11 perpendicular to the first axial passage 10. The first radial passages 11 are equally spaced apart, and in one embodiment there are 6 first radial passages 11. The first air inlet fitting 9 is connected to the inlet end of the first axial passage 10 and the first sealing fitting 5 is connected to the first radial passage 11.

The product placement block 3 is disposed in a rectangular groove 36 on the base plate 1, and fastened by screws. Rectangular slot 36 is adjacent opening 35 and is oriented uniformly so that product placement block 3 is disposed parallel to base 2. The product placement block 3 is provided with a T-shaped slot 38 defining the diaphragm valve 34, the T-shaped slot 38 facing vertically towards the base 2.

The guide rail 7 is arranged in a guide rail groove 37 on the base plate 1 and fastened by means of screws. The guide rail grooves 37 are provided at right and left sides, respectively, and are oriented perpendicularly to the rectangular grooves 36, and the guide rail 7 is provided with a slider 39.

The air channel block 4 is also rectangular, and the air channel block 4 is transversely arranged on the sliding block 39 and is connected with the sliding block 39 through a screw. Since the guide rail 7 is perpendicular to the product placement block 3, the air channel block 4 is parallel to the product placement block 3. The air passage block 4 is internally provided with a second axial passage 27 along the axial direction thereof, and a second radial passage 28 perpendicularly penetrating the second axial passage 27. The second air inlet joint 24 is connected to the inlet end of the second axial channel 27, the second sealing joint 6 is connected to the second radial channel 28, the sealing piece 23 is arranged between the second sealing joint 6 and the air path block 4, and the second radial channel 28 is symmetrical to the first radial channel 11 in orientation and distribution.

The driving piece 8 is arranged on the bottom plate 1, and the driving piece 8 is connected with the air channel block 4 and is used for driving the air channel block 4 to slide along the guide rail 7. The driving member 8 may take the form of, for example, a cylinder, a quick clamp, etc. In a specific embodiment, the driving member 8 is a quick clamp, and a screw rod of the quick clamp is sleeved on the connecting plate 30, and the connecting plate 30 is connected to the side surface of the air path block 4 by a screw.

When the product placement block 3 is initially installed, the screws are placed in but not tightened, placing the diaphragm valve 34 in the T-shaped groove 38 with its ports facing the first and

second sealing joints

5 and 6, respectively. The driving member 8 is started, the driving member 8 drives the air passage block 4 to move towards the diaphragm valve 34, the diaphragm valve 34 is pushed to move after the second sealing joint 6 on the air passage block 4 is aligned with the port of the diaphragm valve 34 until the other port of the diaphragm valve 34 is aligned with the first sealing joint 5, and then the screw on the product placement block 3 is screwed.

In a preferred embodiment, the first sealing joint 5 is connected to the first radial channel by means of a sliding shaft 12. The first radial channel 11 is a penetrating stepped hole, and has a large outer side aperture and a small inner side aperture. The sliding shaft 12 is cylindrical and has a slightly radially smaller front end and a slightly radially larger rear end, the front and rear ends forming a shoulder 40. The sliding shaft 12 is inserted from the outer aperture of the first radial passage 11, and the shoulder 40 abuts against the inner end face of the inner aperture to prevent the sliding shaft 12 from sliding out. The rear end of the sliding shaft 12 is provided with an annular groove in which a sliding shaft sealing ring 16 is arranged. The first sealing joint 5 is screwed with the front end of the sliding shaft 12, and the threaded end of the first sealing joint 5 is provided with a sealing element 20. The end of the sliding shaft 12 is provided with a spring 13, the spring 13 is held in the first radial channel 11 by an end cover 14, the end cover 14 is in threaded connection with an outer side orifice of the first radial channel 11, and an end cover sealing ring 15 is arranged between the end cover 14 and the base 2. The sliding shaft 12 can provide compensation for the first sealing joint 5, and when the driving piece 8 transitionally drives the air passage block 4, the first sealing joint 5 can push the sliding shaft 12 to compress the spring 13, so that redundant pressure is relieved, and two ends of the diaphragm valve 34 are prevented from being damaged by pressure.

Further, a first annular groove 18 may be provided on the end surface of the first sealing joint 5 to which the diaphragm valve 34 is connected, and a first seal 19 may be provided in the first annular groove 18. The end face of the second sealing joint 6, which is connected to the diaphragm valve 34, may be provided with a second annular groove 21, in which second annular groove 21 a second seal 22 is provided. The first and

second seals

19, 22 provide an effective seal for pressure testing, while allowing the end face of the diaphragm valve 34 to press seal only with the first and

second seals

19, 22, further protecting the end face of the diaphragm valve 34.

The diaphragm valve test fixture of this embodiment is specifically used as follows: the diaphragm valve 34 is placed on the product placement block 3 in sequence, and then the driving member 8 is actuated so that the first sealing joint 5 and the second sealing joint 6 are connected to both ends of the diaphragm valve 34, respectively. The second air inlet joint 24 on the air path block 4 is connected with a helium detector, and the first air inlet joint 9 on the base 2 is connected with a helium gas source. When the test is started, the helium source is closed, the helium detector is started to vacuumize, and then a helium spray gun is used for spraying the leakage detection points of the diaphragm valve 34 in sequence. After the external leakage test is finished, the helium gas source is opened, the internal leakage test is simultaneously carried out on the plurality of diaphragm valves 34, the helium detector is turned off after the internal leakage test is finished, the helium gas source is turned off, the driving piece 8 is retracted, and the diaphragm valves 34 are taken out to finish the test. The present utility model places a plurality of diaphragm valves 34 on a fixture to fix, which is equivalent to connecting all the outlet ends of the diaphragm valves 34 in series to become one port a, and connecting all the inlet ends in series to become one port B. When the leakage is detected, vacuumizing is carried out from the port A, then helium is sprayed at a leakage detection point of the diaphragm valve 34 for detection, and the port A is kept in a vacuumizing state after the detection is finished; and when the internal leakage is detected, helium with a certain pressure value is input from the port B, and the internal leakage detection is performed. The external leakage and the internal leakage of a plurality of products can be detected simultaneously by only once clamping, the operation is simple, and the detection efficiency is high.

Because base 2 and gas circuit piece 4 are rectangular shape, in order to be convenient for processing, adopt the both ends drilling to merge. In a preferred embodiment, both the first axial passage 10 and the second axial passage 27 are through-going. The outlet end of the first axial channel 10 is provided with a first plug 17 and the outlet end of the second axial channel 27 is provided with a second plug 26.

In order to shorten the evacuation time, a steel pipe 25 may be provided in the second axial passage 27. The outer diameter of the steel pipe 25 corresponds to the second axial passage 27, and the steel pipe 25 is provided with a measuring hole 29 on the side facing the second seal joint 6. The steel pipe 25 is used for reducing the inner space of the second axial channel, shortening the vacuumizing time and improving the detection efficiency.

The both sides of bottom plate 1 can also be provided with handle 31, and handle 31 connects on handle seat 32, and handle seat 32 passes through the both ends of screw fixation at bottom plate 1, and handle 31 is convenient for the whole removal of anchor clamps. The bottom plate 1 bottom can also set up callus on the sole bumper shock absorber 33, and callus on the sole bumper shock absorber 33 passes through the fix with screw in bottom plate 1 below, and the levelness of bottom plate 1 is adjustable to callus on the sole bumper shock absorber 33, avoids rocking in the pressure test process simultaneously.

The foregoing describes the basic principles and advantages of the present utility model, and it is to be understood that the above examples are illustrative only of the technical aspects of the present utility model and not limiting thereof. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate from the disclosure that modifications may be made to the solutions recited in the foregoing embodiments, or that equivalents may be substituted for in part or all of the features thereof. Any obvious substitutions without departing from the inventive concept are within the scope of the utility model.

Claims

1. The diaphragm valve test fixture is characterized by comprising a bottom plate (1), a base (2), a product placement block (3), an air passage block (4), a first sealing joint (5), a second sealing joint (6), a guide rail (7), a driving piece (8), a first air inlet joint (9) and a second air inlet joint (24), wherein the base (2) is arranged on the bottom plate (1), a first axial channel (10) and a first radial channel (11) vertically communicated with the first axial channel (10) are arranged in the base (2), the first sealing joint (5) is connected to the first radial channel (11), the first air inlet joint (9) is connected to the inlet end of the first axial channel (10), the product placement block (3) is arranged on the bottom plate (1), the product placement block (3) is parallel to the base (2), the guide rail (7) is arranged on the bottom plate (1) and is vertical to the product placement block (3), the first sealing joint (5) is connected to the first axial channel (11), the second axial channel (27) is vertically arranged on the guide rail (7), the second axial channel (27) is vertically communicated with the air passage block (27), the second sealing joint (6) is connected to the second radial channel (28), the second air inlet joint (24) is connected to the inlet end of the second axial channel (27), the first sealing joint (5) and the second sealing joint (6) face each other, the driving piece (8) is fixed to the bottom plate (1), and the air channel block (4) moves towards the base (2) under the driving of the driving piece (8).

2. Diaphragm valve test fixture according to claim 1, characterized in that the first sealing joint (5) is connected to the first radial channel (11) by a sliding shaft (12), the sliding shaft (12) being provided with a spring (13) at the end.

3. The diaphragm valve test fixture according to claim 2, characterized in that the end of the first sealing joint (5) facing the second sealing joint (6) is provided with a first annular groove (18), a first sealing member (19) is provided in the first annular groove (18), the end of the second sealing joint (6) facing the first sealing joint (5) is provided with a second annular groove (21), and a second sealing member (22) is provided in the second annular groove (21).

4. A diaphragm valve testing fixture according to claim 3, characterized in that a first plug (17) is arranged on the base (2), the first plug (17) is connected to the outlet end of the first axial channel (10), a second plug (26) is arranged on the air passage block (4), and the second plug (26) is connected to the outlet end of the second axial channel (27).

5. Diaphragm valve test fixture according to claim 4, characterized in that a steel tube (25) is arranged in the second axial channel (27), which steel tube (25) is provided with a side hole (29) at the side facing the second sealing joint (6).

6. Diaphragm valve test fixture according to claim 1, characterized in that the driver (8) is a quick clamp.

7. The diaphragm valve testing fixture according to claim 6, wherein handles (31) are arranged on two sides of the bottom plate (1), and the handles (31) are fixed on the bottom plate (1) through handle seats (32).

8. Diaphragm valve test fixture according to claim 7, characterized in that a foot pad damper (33) is provided below the bottom plate (1).