Manual large-flow corrugated pipe valve

Abstract

The utility model relates to the technical field of valves, and particularly discloses a manual large-flow corrugated pipe valve which comprises a transmission assembly, a valve pipe assembly and a valve body assembly, the transmission assembly is fixedly connected to the valve pipe assembly, and the valve pipe assembly is located above the valve body assembly; the transmission assembly comprises a hand wheel and a second screw. The hand wheel is fixedly connected to the valve pipe assembly through the second screw. The valve pipe assembly comprises an opening blocking pipe, a corrugated pipe, a first welding ring, a valve rod and a second welding ring, a first fastening assembly is arranged on the opening blocking pipe, the valve rod is rotationally connected to the opening blocking pipe through the first fastening assembly, and the second welding ring and a sealing ring are symmetrically arranged below the opening blocking pipe. Stable guiding movement of the valve rod can be achieved, the valve rod can be accurately positioned to the position of the through hole of the valve body for a long time, valve sealing performance is guaranteed, and the service life of the valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a manual large-flow bellows valve. Background Art

[0002] Bellows valve is an industrial control valve that uses the expansion and contraction of bellows to adjust the flow of fluid. It is usually made of stainless steel and has good corrosion resistance and pressure resistance. Its main principle is to open and close the valve through the change of the wall pressure of the bellows.

[0003] Chinese Patent Publication No.: (CN212718003) discloses a bellows assembly and a large-caliber pneumatic normally closed bellows valve, including a flange, a bellows, a retaining ring and a valve stem. The bellows is located between the retaining ring and the flange. The valve stem passes through the flange and the bellows in sequence and is connected to the retaining ring. A sealing valve head is fixed on the retaining ring, including N bellows and N-1 guide rings. Adjacent bellows are connected by guide rings to form an integral bellows structure. Both ends of the integral bellows structure extend toward the flange and the retaining ring respectively.

[0004] There are still certain shortcomings in the above-mentioned related technologies. The guide ring is set on the bellows, which will be displaced with the expansion and contraction of the bellows. It has low stability and is greatly affected by the state of the bellows. The guide ring will wear after long-term contact with the valve stem. It may cause the accuracy of the valve stem guiding movement to be reduced, and it cannot be accurately positioned on the valve seat, thereby reducing the sealing of the valve. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model provides a manual large-flow bellows valve, which can achieve stable guided movement of the valve stem, accurately position the valve body through hole for a long time, ensure the valve sealing, and increase the service life of the valve.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A manual large-flow bellows valve comprises a transmission assembly, a valve pipe assembly and a valve body assembly, wherein the transmission assembly is fixedly connected to the valve pipe assembly, and the valve pipe assembly is located above the valve body assembly;

[0008] The transmission assembly comprises a hand wheel and a second screw, and the hand wheel is fixedly connected to the valve pipe assembly through the second screw;

[0009] The valve pipe assembly comprises an open retaining tube, a bellows, a first welding ring, a valve stem and a second welding ring, the open retaining tube is provided with a first fastening assembly, the valve stem is rotatably connected to the open retaining tube through the first fastening assembly, the second welding ring and a sealing ring are symmetrically arranged below the open retaining tube, two of the second welding rings are fixedly connected below the open retaining tube, two of the sealing rings are fixedly connected to adjacent second welding rings, the bellows are symmetrically arranged, two of the bellows are fixedly connected between adjacent second welding rings and the first welding ring, the second welding ring is symmetrically provided with a second fastening assembly and a sealing gasket, the valve stem is fixedly connected to the first welding ring through the second fastening assembly, two of the sealing gaskets are fixedly connected below both sides of the first welding ring, the open retaining tube is symmetrically provided with a first screw above the open retaining tube, and the open retaining tube is fixed by the two first screws;

[0010] The valve body assembly comprises a valve body and a through hole, wherein the through hole is opened in the middle of the valve body and matches with the first welding ring.

[0011] Preferably, the first fastening assembly is fixedly connected to the upper opening of the opening retaining tube, and the first fastening assembly comprises an O-ring and a bushing, and the bushing is fixedly connected to the O-ring.

[0012] Preferably, the opening retaining tube is arranged with upper and lower openings communicating with each other, and the valve stem passes through the opening retaining tube.

[0013] Preferably, the open retaining tube is arranged in a T-shape, and the second welding ring is fixedly connected to two sides below the T-shaped horizontal section of the open retaining tube.

[0014] Preferably, the second fastening assembly comprises a retaining ring lining and a retaining ring for a hole, and the retaining ring lining is fixedly connected to the retaining ring for the hole.

[0015] Preferably, a groove is provided below the first welding ring, and the groove matches the sealing gasket.

[0016] The beneficial effects of the utility model are:

[0017] (1) By setting the transmission assembly, the technical effect that can be achieved is simple structure and easy operation.

[0018] (2) By setting up the valve pipe assembly, the technical effect that can be achieved is that the retaining ring lining is fixedly connected to the hole retaining ring, so that the first welding ring is stably connected to the valve stem, and the two bellows are fixedly connected between the adjacent second welding ring and the first welding ring, so that the first welding ring is evenly stressed, and the first welding ring is driven to move by the valve stem through the expansion and contraction of the bellows, which is convenient for the smooth opening and closing of the valve. The opening retaining tube is connected to the upper and lower openings, and the valve stem is arranged to pass through the opening retaining tube, so that the valve stem can stably move along the opening retaining tube guide, cooperate with the expansion and contraction of the bellows to complete the opening and closing of the valve, and achieve long-term precise positioning to the position of the valve body through hole, thereby ensuring the sealing of the valve and increasing the service life of the valve.

[0019] (3) By setting up the valve body assembly, the technical effect that can be achieved is that the valve body flow channel is designed to be linear. Compared with the traditional S-shaped valve body flow channel, it can reduce the resistance generated when the medium flows, avoid the accumulation of the medium inside the valve body, reduce the risk of blockage, and at the same time can more accurately control the fluid flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 For the utility model Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 For the utility model Figure 1 Enlarged view of point B in the middle;

[0024] Description of main component symbols:

[0025] In the figure: 1. hand wheel; 2. open retaining tube; 3. O-ring; 4. bushing; 5. bellows; 6. sealing gasket; 7. first welding ring; 8. retaining ring lining; 9. retaining ring for hole; 10. valve stem; 11. second welding ring; 12. valve body; 13. sealing ring; 14. first screw; 15. second screw; 16. through hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] Reference Figures 1 to 3 , a manual large flow bellows valve, comprising a transmission assembly, a valve pipe assembly and a valve body assembly, wherein the transmission assembly is fixedly connected to the valve pipe assembly, and the valve pipe assembly is located above the valve body assembly;

[0030] The transmission assembly includes a hand wheel 1 and a second screw 15. The hand wheel 1 is fixedly connected to the valve pipe assembly through the second screw 15, and has a simple structure and is easy to operate.

[0031] The valve pipe assembly includes an open retaining pipe 2, a bellows 5, a first welding ring 7, a valve stem 10 and a second welding ring 11. The open retaining pipe 2 is provided with a first fastening assembly, and the valve stem 10 is rotatably connected to the open retaining pipe 2 through the first fastening assembly. The second welding ring 11 and the sealing ring 13 are symmetrically arranged below the open retaining pipe 2. The two second welding rings 11 are fixedly connected to the bottom of the open retaining pipe 2, and the two sealing rings 13 are fixedly connected to the adjacent second welding rings 11. The bellows 5 are symmetrically arranged, and the two bellows 5 are fixedly connected between the adjacent second welding rings 11 and the first welding ring 7, so that the first welding ring 7 is evenly stressed, and the first welding ring 7 is driven to move by the bellows 5 telescopically and stably cooperating with the valve stem 10, so as to facilitate the smooth opening and closing of the valve. The second welding ring 11 is symmetrically provided with a second fastening assembly and a sealing gasket 6, and the valve stem 10 is fixedly connected to the first welding ring 7 through the second fastening assembly. The two sealing gaskets 6 are fixedly connected to the lower sides of the first welding ring 7, and the first screws 14 are symmetrically provided above the opening retaining tube 2, and the opening retaining tube 2 is fixed by the two first screws 14; a groove is provided below the first welding ring 7, and the groove matches the sealing gasket 6 to ensure the sealing performance when the valve is closed.

[0032] Reference Figures 1 to 3 The valve body assembly includes a valve body 12 and a through hole 16. The through hole 16 is opened in the middle of the valve body 12. The through hole 16 cooperates with the first welding ring 7. The flow channel of the valve body 12 is designed to be linear. Compared with the traditional S-type valve body flow channel, it can reduce the resistance generated when the medium flows, avoid the accumulation of the medium inside the valve body 12, reduce the risk of blockage, and at the same time can more accurately control the fluid flow.

[0033] Reference Figures 1 to 3 The first fastening assembly is fixedly connected to the opening above the opening retaining tube 2. The first fastening assembly includes an O-ring 3 and a bushing 4. The bushing 4 is fixedly connected to the O-ring 3. The auxiliary valve stem 10 is stably connected to the inside of the opening retaining tube 2 and is easy to replace and maintain.

[0034] Reference Figures 1 to 3 The open retaining tube 2 is connected with the upper and lower openings, and the valve stem 10 passes through the open retaining tube 2, so that the valve stem 10 can stably move along the guide of the open retaining tube 2, and cooperate with the expansion and contraction of the bellows 5 to complete the opening and closing of the valve, thereby achieving long-term precise positioning to the position of the through hole 16 of the valve body 12, ensuring the valve sealing and increasing the service life of the valve; the open retaining tube 2 is T-shaped, and the second welding ring 11 is fixedly connected to the two sides below the T-shaped horizontal section of the open retaining tube 2.

[0035] Reference Figures 1 to 3 The second fastening assembly includes a retaining ring lining 8 and a hole retaining ring 9. The retaining ring lining 8 is fixedly connected to the hole retaining ring 9, so that the first welding ring 7 is stably connected to the valve stem 10.

[0036] The working principle and use process of the utility model are as follows: when the valve needs to be closed, the hand wheel 1 is turned, and a downward external force is applied through the hand wheel 1 to drive the valve stem 10 and the first welding ring 7 to move along the guide of the opening retaining tube 2, and cooperate with the bellows 5 to expand and contract until the first welding ring 7 completely blocks the through hole 16 of the valve body 12, thereby completing the closure of the valve.

[0037] When the valve needs to be opened, the hand wheel 1 is turned to apply an upward external force through the hand wheel 1 to drive the valve stem 10 and the first welding ring 7 to move along the guide of the opening retaining tube 2, and cooperate with the bellows 5 to expand and contract until the valve is opened to a suitable position, and the hand wheel 1 is stopped.

[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A manual large flow bellows valve, characterized by: It includes a transmission assembly, a valve pipe assembly and a valve body assembly, wherein the transmission assembly is fixedly connected to the valve pipe assembly, and the valve pipe assembly is located above the valve body assembly; The transmission assembly comprises a hand wheel (1) and a second screw (15), and the hand wheel (1) is fixedly connected to the valve pipe assembly via the second screw (15); The valve tube assembly comprises an open retaining tube (2), a bellows (5), a first welding ring (7), a valve stem (10) and a second welding ring (11); the open retaining tube (2) is provided with a first fastening assembly; the valve stem (10) is rotatably connected to the open retaining tube (2) via the first fastening assembly; the second welding ring (11) and a sealing ring (13) are symmetrically arranged below the open retaining tube (2); two second welding rings (11) are fixedly connected below the open retaining tube (2); two sealing rings (13) are fixedly connected to adjacent second welding rings (11); the bellows (5) is fixedly connected to the valve stem (10) and the second welding ring (11) is fixedly connected to the valve stem (10). The bellows (5) are symmetrically arranged, the two bellows (5) are fixedly connected between the adjacent second welding ring (11) and the first welding ring (7), the second welding ring (11) is symmetrically provided with a second fastening assembly and a sealing gasket (6), the valve stem (10) is fixedly connected to the first welding ring (7) through the second fastening assembly, the two sealing gaskets (6) are fixedly connected to the lower sides of the first welding ring (7), the first screws (14) are symmetrically arranged above the open stop tube (2), and the open stop tube (2) is fixed by the two first screws (14); The valve body assembly comprises a valve body (12) and a through hole (16); the through hole (16) is opened in the middle of the valve body (12); and the through hole (16) cooperates with the first welding ring.

2. A manual large flow bellows valve according to claim 1, characterized in that: The first fastening assembly is fixedly connected to the upper opening of the open retaining tube (2), and the first fastening assembly comprises an O-ring (3) and a bushing (4), wherein the bushing (4) is fixedly connected to the O-ring (3).

3. A manual large flow bellows valve according to claim 1, characterized in that: The opening retaining tube (2) is arranged with upper and lower openings communicating with each other, and the valve stem (10) is arranged to penetrate the opening retaining tube (2).

4. A manual large flow bellows valve according to claim 1, characterized in that: The open retaining tube (2) is arranged in a T-shape, and the second welding ring (11) is fixedly connected to the two sides below the T-shaped horizontal section of the open retaining tube (2).

5. A manual large flow bellows valve according to claim 1, characterized in that: The second fastening assembly comprises a retaining ring lining (8) and a hole retaining ring (9), wherein the retaining ring lining (8) is fixedly connected to the hole retaining ring (9).

6. A manual large flow bellows valve according to claim 1, characterized in that: A groove is provided below the first welding ring (7), and the groove matches the sealing gasket (6).

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