Pneumatic quick-connection ball valve

Abstract

The utility model provides a pneumatic quick-connection ball valve, and belongs to the technical field of valve manufacturing. The pneumatic quick-connection ball valve solves the problem that an existing pneumatic quick-connection ball valve is poor in sealing performance. The pneumatic quick-connection ball valve comprises a valve body, at least one end of the valve body is provided with a quick-connection assembly, the quick-connection assembly comprises a movable sleeve and a clamping ring with a circle of clamping jaws, the quick-connection assembly further comprises a sealing ring arranged on the inner wall of the end of the valve body, a cylindrical shell is arranged between the end of the valve body and the movable sleeve, and a pressing ring is arranged between the shell and the sealing ring. The outer ring of the clamping ring is clamped by the pressing ring and the shell, the inner wall of the shell is provided with a first step, the outer wall of the inner end of the movable sleeve is a conical face and is provided with a blocking shoulder used for abutting against the first step, the outer wall of the shell is provided with a second step, and the end of the valve body is provided with a riveting edge which is riveted inwards and used for abutting against the second step. The sealing device has the advantages of good sealing performance, good use safety and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve manufacturing technical field relates to a ball valve especially relates to a kind of pneumatic quick coupling ball valve. BACKGROUND

[0002] Pneumatic is with gas as power source, drive equipment to complete movement or work, and ball valve is often used in the pipeline layout of pneumatic system, the connection of current ball valve and pipeline is not enough convenient, therefore someone designs quick coupling ball valve.

[0003] For example, Chinese patent document discloses a kind of quick coupling exhaust ball valve [application number: 201520770515.X;Grant announcement number: CN205047889U], it includes ball valve body, ball valve body includes mutually connected valve body and bonnet, ball valve body both ends are equipped with quick coupling device, quick coupling device includes lock cap connected on ball valve body, elastic card is equipped between ball valve body and lock cap, lock cap is slidably connected with the movable sleeve for driving elastic card.

[0004] The quick coupling exhaust ball valve described above is connected with external pipe conveniently by the setting of movable sleeve and elastic card, but nut is threadedly connected with ball valve body, sealing effect is not ideal, and lock cap exists loose condition, can cause gas leakage, and use safety is not good. SUMMARY

[0005] The utility model aims at the above-mentioned problems existing in prior art, provide a kind of pneumatic quick coupling ball valve with good sealing, good use safety.

[0006] The utility model discloses the purpose can be realized by the following technical scheme: a kind of pneumatic quick coupling ball valve, including valve body, the valve body at least one end is equipped with quick coupling assembly, the quick coupling assembly includes movable sleeve and the clamping ring with a circle of clamping jaw, it is characterized in that, the quick coupling assembly further include the sealing ring being equipped in the end wall of valve body, the end of valve body and movable sleeve is equipped with the shell being in the shape of barrel, the shell and sealing ring are equipped with the compression ring, the outer ring of the clamping ring is clamped by compression ring and shell, the inner wall of the shell has step one, the outer wall of movable sleeve inner end is conical surface and this end outer wall has the shoulder for resisting step one, the outer wall of the shell has step two, the end of valve body has inward riveting and provides the riveting edge that step two is contacted.

[0007] In the above-mentioned a kind of pneumatic quick coupling ball valve, the inner wall of the shell has step three, the compression ring has the compression part that enters shell and compresses the outer ring of clamping ring to step three, the inner wall of the compression part is the conical surface that is located in clamping jaw.

[0008] In the pneumatic quick connection ball valve, the inner side of the sealing ring is in contact with the fourth step of the inner wall of the valve body, the outer wall of the sealing ring is in contact with the inner wall of the valve body, and the outer side of the sealing ring is in contact with the end face of the compression ring.

[0009] In the pneumatic quick connection ball valve, the sealing ring and the compression ring are provided with a leakage prevention structure for preventing gas leakage.

[0010] In the pneumatic quick connection ball valve, the leakage prevention structure comprises a turned edge of the inner end of the compression ring, which is turned to the side of the sealing ring and in contact with the inner wall of the sealing ring, and the end of the turned edge further comprises a convex ring embedded in the sealing ring.

[0011] As another case, in the pneumatic quick connection ball valve, the leakage prevention structure comprises a convex ring on the outer side of the sealing ring, which is convex in the axial direction, and the end face of the compression ring is provided with an annular groove for embedding the convex ring. In this way, the sealing ring and the compression ring are in close contact, gas leakage is prevented, and the safety of use is good.

[0012] In the pneumatic quick connection ball valve, the inner wall of the sealing ring is arc-shaped and the orifice of the inner side of the sealing ring is conically shaped.

[0013] Compared with the prior art, the pneumatic quick connection ball valve has the advantages that the structure is compact and the structural strength is high, the shell, the clamping ring and the compression ring are prevented from moving axially, the shell is prevented from falling off, the service life is long, the sealing performance is good, gas leakage is prevented, and the safety of use is good. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective view of the pneumatic quick connection ball valve.

[0015] Figure 2 It is a structural sectional view of the pneumatic quick connection ball valve.

[0016] Figure 3 It is Figure 2 It is an enlarged view of the structure of the circle A part.

[0017] In the figure, 1 is a valve body, 11 is a riveting edge, 12 is a fourth step, 2 is a valve core, 3 is a valve rod, 4 is a handle, 5 is a movable sleeve, 51 is a stop shoulder, 6 is a clamping ring, 61 is a clamping jaw, 7 is a sealing ring, 8 is a shell, 81 is a first step, 82 is a second step, 83 is a third step, 9 is a compression ring, 91 is a compression part, 92 is a turned edge, and 93 is a convex ring. DETAILED DESCRIPTION

[0018] The following is a specific embodiment of the present utility model and further describes the technical scheme of the present utility model in combination with the drawings, but the present utility model is not limited to these embodiments.

[0019] As Figure 1 , Figure 2 and Figure 3 shown, the pneumatic quick connection ball valve includes a valve body 1, a valve core 2, a valve rod 3 and a handle 4, the valve core 2 is located in the valve body 1, the inner end of the valve rod 3 is connected with the valve core 2, the outer end of the valve rod 3 extends out of the valve body 1 and is fixedly connected with the handle 4, at least one end of the valve body 1 is provided with a quick connection assembly, in the embodiment, one end of the valve body 1 is provided with a quick connection assembly, the other end of the valve body 1 has an external thread, the quick connection assembly includes a movable sleeve 5 and a clamping ring 6 with a ring of clamping claws 61, the quick connection assembly further includes a sealing ring 7 arranged on the inner wall of the end of the valve body 1, a cylindrical shell 8 is arranged between the end of the valve body 1 and the movable sleeve 5, a compression ring 9 is arranged between the shell 8 and the sealing ring 7, the outer ring of the clamping ring 6 is clamped by the compression ring 9 and the shell 8, the inner wall of the shell 8 has a first step 81, the outer wall of the inner end of the movable sleeve 5 is a tapered surface and has a shoulder 51 for abutting against the first step 81, the outer wall of the shell 8 has a second step 82, the end of the valve body 1 has a riveting edge 11 riveted inwardly and abutting against the second step 82. The inner wall of the sealing ring 7 is arc-shaped and the orifice of the inner side surface of the sealing ring 7 is a conical orifice, so that the sealing ring is easy to insert into a pipe and has good sealing performance.

[0020] The pneumatic quick connection ball valve is compact in structure and high in structural strength by arranging the riveting edge 11, avoids axial movement of the shell 8, the clamping ring 6 and the compression ring 9, avoids the shell 8 from falling off, has a long service life and good safety in use, and the sealing ring 7 ensures sealing performance and avoids gas leakage.

[0021] Further, the inner wall of the shell 8 has a third step 83, the compression ring 9 has a compression portion 91 extending into the shell 8 and compressing the outer ring of the clamping ring 6 against the third step 83, the inner wall of the compression portion 91 is a tapered surface for the clamping claws 61. In this way, the axial length can be shortened, the compression portion 91 has good compression effect on the clamping ring 6, and the clamping ring 6 has good working stability.

[0022] The inner side surface of the sealing ring 7 abuts against a fourth step 12 on the inner wall of the valve body 1, the outer wall of the sealing ring 7 abuts against the inner wall of the valve body 1, and the outer side surface of the sealing ring 7 abuts against the end surface of the compression ring 9. In this way, the sealing ring 7 and the compression ring 9 are in close contact, have good sealing performance between them, avoid gas leakage and improve safety in use.

[0023] A leakage prevention structure is arranged between the sealing ring 7 and the compression ring 9 to prevent gas leakage. This increases the leakage prevention effect and improves the safety in use. In this embodiment, the leakage prevention structure comprises a rim 92 folded to the side of the sealing ring 7 at the inner end of the compression ring 9, the rim 92 abutting against the inner wall of the sealing ring 7, and a convex ring 93 radially protruding at the end of the rim 92 and embedded in the sealing ring 7. The arrangement of the rim 92 and the convex ring 93 makes the sealing ring 7 and the compression ring 9 firmly combined and forms a tight contact seal, thus preventing gas leakage and improving the safety in use.

[0024] The contents not described in detail in the specification belong to the prior art known to those skilled in the art. The specific embodiments described herein are only illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the scope defined by the appended claims.

Claims

1. A pneumatic quick coupling ball valve comprising a valve body (1) provided with a quick coupling assembly at at least one end, said quick coupling assembly comprising a movable sleeve (5) and a collar (6) provided with a ring of claws (61), characterized in that, The quick-connection assembly further comprises a sealing ring (7) arranged on the inner wall of the end portion of the valve body (1), a cylindrical shell (8) arranged between the end portion of the valve body (1) and the movable sleeve (5), a pressing ring (9) arranged between the shell (8) and the sealing ring (7), the outer ring of the clamping ring (6) is clamped by the pressing ring (9) and the shell (8), the inner wall of the shell (8) has a first step (81), the outer wall of the inner end of the movable sleeve (5) is a conical surface and has a shoulder (51) for abutting against the first step (81), the outer wall of the shell (8) has a second step (82), the end portion of the valve body (1) has a riveting edge (11) riveted inwardly and abutting against the second step (82).

2. A pneumatic quick-connect ball valve according to claim 1, wherein The inner wall of the shell (8) has a third step (83), the pressing ring (9) has a pressing portion (91) extending into the shell (8) and pressing the outer ring of the clamping ring (6) against the third step (83), the inner wall of the pressing portion (91) is a conical surface for the clamping claw (61).

3. A pneumatic quick-connect ball valve according to claim 2, wherein The inner side of the sealing ring (7) abuts against a fourth step (12) on the inner wall of the valve body (1), the outer wall of the sealing ring (7) abuts against the inner wall of the valve body (1), and the outer side of the sealing ring (7) abuts against the end face of the pressing ring (9).

4. A pneumatic quick-connect ball valve according to claim 3, wherein The sealing ring (7) and the pressing ring (9) are provided with a leakage prevention structure for preventing gas leakage.

5. A pneumatic quick-connect ball valve according to claim 4, wherein The leakage prevention structure comprises a turn of the edge (92) on the inner end of the pressing ring (9) folded to the side of the sealing ring (7), the edge (92) abuts against the inner wall of the sealing ring (7), and the end portion of the edge (92) further has a turn of the convex ring (93) protruding radially outwardly and embedded in the sealing ring (7).

6. A pneumatic quick-connect ball valve according to claim 4, wherein The leakage prevention structure comprises a turn of the convex ring on the outer side of the sealing ring (7) protruding axially outwardly, and the end face of the pressing ring (9) has an annular groove for embedding the convex ring.

7. A pneumatic quick-coupling ball valve according to any one of claims 1 to 6, characterized in that The inner wall of the sealing ring (7) is arc-shaped, and the aperture of the inner side of the sealing ring (7) is a constricted aperture.

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