A full-port ball valve structure for easy connection

Abstract

The application discloses a full-through-diameter ball valve structure convenient to connect, which comprises a valve body, a rotating sleeve, a moving pipe and a locking piece; the rotating sleeve is arranged at both ends of the valve body, the moving pipe is arranged inside the valve body and the rotating sleeve, and the end of the rotating sleeve is connected with the locking piece. When being connected, the locking piece is first sleeved on a pipeline which needs to be connected with the ball valve, then the end inner wall of the rotating sleeve is matched with the end outer wall of the pipeline, the rotating sleeve is rotated to move the moving pipe to the outside of the valve body until the rotating sleeve cannot be rotated in the rotation direction, at this time, the end outer wall of the moving pipe is matched with the end inner wall of the pipeline, and finally the locking piece is threadedly connected with the rotating sleeve, so that the connection between the ball valve and the pipeline is completed. In the connecting process, external threads are avoided to be machined on the pipeline, meanwhile, a plurality of bolts are not needed to be used for connection, the connecting time of the ball valve and the pipeline is greatly shortened, and the dismounting and replacement are convenient and fast.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ball valves, in particular to a full-bore ball valve structure convenient to connect. BACKGROUND

[0002] The function of the ball valve is to control the flow of medium in the pipeline, which is mainly used in petroleum refining, chemical industry, water conservancy, municipal administration and other industries, and is a common product in life. The flow channel in the full-bore ball valve can pass the medium without obvious restriction, and is mainly used in on-off and circuit breaking conditions. The ball valve needs to be connected with the pipeline during normal use, and the common connection methods at present are threaded connection, flange connection and welding.

[0003] Threaded connection needs to process matching external threads on the corresponding pipeline, which adds an additional process during connection, and the connection time is also lengthened; flange connection is to connect two flange plates together by bolts, which generally requires four or more bolts for connection, and it takes longer to tighten such a number of bolts; welding can ensure better sealing and stability than the other two, but it is more difficult to disassemble and replace the ball valve, and there is also the risk of damaging the ball valve and the pipeline.

[0004] A full-bore ball valve is disclosed in the patent with publication number CN209781835U (hereinafter referred to as "prior art 1"). The connection method used in prior art 1 is flange connection, which usually requires bolts to fasten two flange plates. During the connection process, the number of twists of the bolt and nut, and the size of the clamping force applied to the flange plate are important factors affecting the sealing and stability of the ball valve in the pipeline connection, and the requirements for the operator are higher. In order to make the connection of the ball valve and the pipeline more convenient and fast, our company has developed a full-bore ball valve structure convenient to connect, which does not need to process external threads on the pipeline, nor use bolts to fasten the connection, and is also very convenient to disassemble and replace. SUMMARY

[0005] In order to solve the problem that the existing ball valve uses threaded connection and flange connection methods which consume a lot of time, and uses welding method which is not convenient to disassemble, the present application develops a full-bore ball valve structure convenient to connect to solve the above defects.

[0006] The technical scheme adopted by the present application is as follows:

[0007] A full-bore ball valve structure convenient to connect, comprising a valve body, a rotating sleeve, a moving pipe and a locking piece; the rotating sleeve is arranged at both ends of the valve body, the moving pipe is arranged inside the valve body and the rotating sleeve, and the end of the rotating sleeve is connected with the locking piece.

[0008] The inner wall of the end part of the valve body and the rotating sleeve is provided with an internal thread, the outer wall of the moving pipe is provided with an external thread, and the moving pipe is connected with the end part of the valve body and the rotating sleeve through the threads; the inner wall of the end part of the locking member is provided with an internal thread, the outer wall of the end part of the rotating sleeve is provided with an external thread, and the locking member is connected with the rotating sleeve through the threads; the external thread on the outer wall of the moving pipe is opposite in rotation direction to the external thread on the outer wall of the end part of the rotating sleeve.

[0009] The end part of the valve body is provided with a circular ring protrusion, the other end of the rotating sleeve is provided with a fixed protrusion, the circular ring protrusion and the fixed protrusion are provided with a gasket, the circular ring protrusion and the fixed protrusion form a closed space, a plurality of balls are arranged in the closed space, and the rotating sleeve is rotatable relative to the valve body through the balls; the inside of the locking member is provided with an elastic body, and the pipeline is fixedly connected through the deformation of the elastic body.

[0010] As a preferred technical solution of the present application, the end part of the rotating sleeve is provided with a limiting barrier.

[0011] As a preferred technical solution of the present application, the length of the internal thread on the end part of the valve body and the length of the internal thread on the inner wall of the rotating sleeve are equal, the length of the external thread on the outer wall of the moving pipe is greater than the length of the internal thread on the inner wall of the end part of the valve body, and less than the sum of the length of the internal thread on the end part of the valve body and the length of the internal thread on the inner wall of the rotating sleeve.

[0012] As a preferred technical solution of the present application, the moving pipe comprises an extension part, a connecting part and a shielding part, the extension part and the shielding part are arranged at two ends of the connecting part, and the external thread is arranged on the outer wall of the connecting part.

[0013] As a preferred technical solution of the present application, the length of the shielding part is greater than the length of the internal thread on the inner wall of the end part of the valve body.

[0014] As a preferred technical solution of the present application, the extension part is provided with a sealing ring.

[0015] As a preferred technical solution of the present application, the end parts of the extension part and the shielding part are provided with flow guide inclined surfaces.

[0016] As a preferred technical solution of the present application, the outer wall of the rotating sleeve is provided with a clamping boss.

[0017] As a preferred technical solution of the present application, the outer wall of the locking member is provided with a fixed platform.

[0018] As a preferred technical solution of the present application, the inside of the locking member is provided with an elastic body.

[0019] The present application has the following beneficial effects:

[0020] The application is connected, first, the locking piece is sleeved on the pipeline which needs to be connected with the ball valve, then the inner wall of the rotating sleeve end is matched with the outer wall of the pipeline end, the rotating sleeve is rotated to move the moving pipe to the outside of the valve body until the rotating sleeve cannot be rotated, at this time, the outer wall of the moving pipe end is matched with the inner wall of the pipeline end, finally, the locking piece is screwed with the rotating sleeve to complete the connection of the ball valve and the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0021] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is the sectional view of the application;

[0022] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the sectional view of the working state of the application;

[0023] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is the structural schematic view of the moving pipe of the application;

[0024] BRIEF DESCRIPTION OF DRAWINGS Figure 4 It is the structural schematic view of the rotating sleeve of the application;

[0025] BRIEF DESCRIPTION OF DRAWINGS Figure 5 It is the structural schematic view of the locking piece of the application.

[0026] In the figure: 100-valve body, 101-ring convex edge, 102-gasket, 200-rotating sleeve, 201-fixed protrusion, 202-rolling ball, 203-clamping boss, 204-limiting barrier, 300-moving pipe, 301-sealing ring, 302-extension, 303-connection part, 304-shielding part, 400-pipeline, 500-locking piece, 501-elastic body, 502-fixed platform. DETAILED DESCRIPTION

[0027] The specific embodiments of the application will be described in detail below with reference to the drawings in the embodiments of the application:

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, if the posture changes, the directional indications also change accordingly.

[0029] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium, can be internal communication of two elements or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] Embodiment one

[0031] A full-bore ball valve structure convenient to connect, comprising a valve body 100, a rotating sleeve 200, a moving pipe 300 and a locking piece 500; the rotating sleeve 200 is arranged at both ends of the valve body 100, the moving pipe 300 is arranged in the valve body 100 and the rotating sleeve 200, and the end of the rotating sleeve 200 is connected with the locking piece 500.

[0032] The inner wall of the end of the valve body 100 and the rotating sleeve 200 is provided with internal threads, the outer wall of the moving pipe 300 is provided with external threads, and the moving pipe 300 is connected with the end of the valve body 100 and the rotating sleeve 200 through threads; the inner wall of the end of the locking piece 500 is provided with internal threads, the outer wall of the end of the rotating sleeve 200 is provided with external threads, and the locking piece 500 is connected with the rotating sleeve 200 through threads; the external threads on the outer wall of the moving pipe 300 and the external threads on the end of the rotating sleeve 200 are of the same rotation direction.

[0033] The end of the valve body 100 is provided with a circular ring protrusion 101, the other end of the rotating sleeve 200 is provided with a fixed protrusion 201, the circular ring protrusion 101 and the fixed protrusion 201 are provided with a gasket 102, and the gasket 102 can be made of elastic material, such as rubber or latex. The circular ring protrusion 101 and the fixed protrusion 201 form a closed space, a plurality of balls 202 are arranged in the closed space, the rotating sleeve 200 is rotatably connected with the valve body 100 through the balls 202; the inside of the locking piece 500 is provided with an elastic body 501, and the pipeline is fixedly connected through the deformation of the elastic body 501.

[0034] The working principle of the present application is:

[0035] As Figure 2As shown, when connecting, the locking member 500 is first sleeved on the pipeline 400 to be connected with the ball valve, then the end inner wall of the rotating sleeve 200 is matched with the end outer wall of the pipeline 400, the rotating sleeve 200 is rotated to move the moving pipe 300 to the outside of the valve body 100 until the rotating sleeve 200 cannot be rotated in this rotation direction, at this time, the end outer wall of the moving pipe 300 is matched with the end inner wall of the pipeline 400, and finally the locking member 500 is threadedly connected with the rotating sleeve 200 to complete the connection of the ball valve and the pipeline 400. Because the external thread on the outer wall of the moving pipe 300 and the external thread on the end outer wall of the rotating sleeve 200 have the same rotation direction in design, the locking sleeve 500 plays a role of fixing and preventing loosening of the rotating sleeve 200 in the application, thereby ensuring the stability of the connection of the ball valve and the pipeline 400. In the connecting process, external threads do not need to be processed on the pipeline 400, and multiple bolts do not need to be used for connection, so that the connection time of the ball valve and the pipeline 400 is greatly shortened, and the disassembly and replacement are also convenient and fast.

[0036] The connection sequence and method of the end of the valve body 100 and the rotating sleeve 200 and the moving pipe 300 in the embodiment are as follows: in this embodiment, the rotating sleeve 200 is divided into two halves, the moving pipe 300 is first matched with the end of the valve body 100, then the rotating sleeve 200 divided into two halves is matched with the moving pipe 300 and the end of the valve body 100, and finally the joint of the rotating sleeve 200 is welded together.

[0037] Embodiment two

[0038] In this embodiment, as shown in the figure, Figure 1 The end of the rotating sleeve 200 is provided with a limiting barrier 204. The limiting barrier 204 is used for limiting the moving pipe 300 to prevent the moving pipe 300 from falling out of the ball valve when the rotating sleeve 200 is rotated to move the moving pipe 300 to the outside of the valve body 100, and can also remind the user that the moving pipe 300 has been moved to the position during connection, so that the user can judge the position of the moving pipe 300 without seeing the inside of the valve body 100, and the connection of the ball valve and the pipeline 400 is facilitated.

[0039] Embodiment three

[0040] In this embodiment, as shown in the figure, Figure 1 The length of the internal thread on the end of the valve body 100 and the length of the internal thread on the inner wall of the rotating sleeve 200 are equal, the length of the external thread on the outer wall of the moving pipe 300 is greater than the length of the internal thread on the end inner wall of the valve body 100, and less than the sum of the length of the internal thread on the end of the valve body 100 and the length of the internal thread on the inner wall of the rotating sleeve 200.

[0041] The purpose of the above configuration is to ensure that, whether the ball valve is in use or not, a portion of the external thread on the outer wall of the moving tube 300 is screwed together with the internal thread on the inner wall of the rotating sleeve 200, thereby enabling the movement of the moving tube 300 within the valve body 100 and the rotating sleeve 200 by rotating the rotating sleeve 200.

[0042] Example 4

[0043] In this embodiment, as Figure 3 As shown, the moving tube 300 includes an extension 302, a connecting part 303, and a shielding part 304. The extension 302 and the shielding part 304 are disposed at both ends of the connecting part 303, and an external thread is disposed on the outer wall of the connecting part 303. The length of the shielding part 304 is greater than the length of the internal thread on the inner wall of the end of the valve body 100.

[0044] When the ball valve is in use, the design that the length of the shielding part 304 is greater than the length of the internal thread on the inner wall of the end of the valve body 100 ensures that the shielding part 304 completely protects the internal thread on the inner wall of the end of the valve body 100, preventing corrosive media transported through the pipeline 400 from eroding the thread, thereby affecting the movement of the moving pipe 300 and adversely affecting the disassembly and replacement of the ball valve.

[0045] Example 5

[0046] In this embodiment, as Figure 1 As shown, a sealing ring 301 is provided on the extension 302. The sealing ring 301 can be made of rubber material. The function of the sealing ring 301 is to enhance the sealing performance of the connection between the ball valve and the pipeline 400, prevent the medium from leaking out from the connection when transported in the pipeline 400, and also prevent potentially corrosive media from eroding the internal threads on the inner wall of the rotating sleeve 200, thus extending the service life of the product and ensuring the stability of the product during use.

[0047] Example 6

[0048] In this embodiment, the ends of the extension 302 and the shielding part 304 are provided with flow guiding slopes. The function of the flow guiding slopes is to reduce the pressure of the medium on the moving pipe 300 when the medium flows through the valve body 100, and to prevent the ball valve and the moving pipe 300 from being subjected to large impacts due to sudden changes in medium pressure during the opening or closing of the ball valve, thereby affecting the stability of the connection between the ball valve and the pipeline 400.

[0049] Example 7

[0050] In this embodiment, as Figure 4As shown, the outer wall of the rotating sleeve 200 is provided with clamping bosses 203. The cross-sectional shape of the clamping bosses 203 is an isosceles trapezoid, and there are two, four, or six clamping bosses 203, which are evenly distributed around the axis of the rotating sleeve 200. The clamping bosses 203 are provided to facilitate the use of clamping tools such as wrenches to clamp the rotating sleeve 200, saving the labor of construction personnel, and preventing the rotating sleeve 200 from being scratched or broken due to excessive clamping force of the clamping tools, thus extending the service life of the product.

[0051] Example 8

[0052] In this embodiment, as Figure 5 As shown, a fixing platform 502 is provided on the outer wall of the locking component 500. The purpose of providing the fixing platform 502 is to facilitate the operator in applying force during installation or releasing force during disassembly using a labor-saving clamping tool, preventing the operator from being scratched by the sharp parts on the locking component 500 due to excessive force during manual installation or disassembly. At the same time, the surface of the fixing platform 502 can be sandblasted to increase the surface roughness, which helps to increase the friction between the clamping tool and the fixing platform 502, preventing accidental detachment during the use of the clamping tool.

[0053] Example 9

[0054] In this embodiment, an elastic body 501 is disposed inside the locking member 500. The elastic body 501 is annular and can be made of elastic rubber, such as butadiene rubber or natural rubber. The outer annular surface of the elastic body 501 contacts the inner wall of the locking member 500, and the inner annular surface of the elastic body 501 contacts the outer wall of the pipe 400. During the threaded connection between the locking member 500 and the rotating sleeve 200, the end face of the rotating sleeve 200 exerts axial pressure on the elastic body 501 disposed inside the locking member 500. After being subjected to axial pressure, the radial dimension of the elastic body 501 increases, and the pressure on the outer wall of the pipe 400 in contact with the inner annular surface of the elastic body 501 during deformation also increases accordingly. Therefore, the friction between the elastic body 501 and the pipe 400 also increases. The increased friction helps to prevent the locking member 500 from axial displacement during operation, and also increases the stability and sealing of the connection between the ball valve and the pipe 400.

[0055] The specific embodiments described above provide a more detailed explanation of the technical solution, the technical problem solved, and the beneficial effects of the present invention. It should be noted that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A full-bore ball valve structure that facilitates connection, characterized in that: It includes a valve body (100), a rotating sleeve (200), a moving tube (300), and a locking element (500); the rotating sleeve (200) is disposed at both ends of the valve body (100), the moving tube (300) is disposed inside the valve body (100) and the rotating sleeve (200), and the end of the rotating sleeve (200) is connected to the locking element (500); The valve body (100) end and the inner wall of the rotating sleeve (200) are provided with internal threads, and the outer wall of the moving tube (300) is provided with external threads. The moving tube (300) is connected to the valve body (100) end and the rotating sleeve (200) by threads; the locking member (500) end inner wall is provided with internal threads, and the rotating sleeve (200) end outer wall is provided with external threads. The locking member (500) is connected to the rotating sleeve (200) by threads; the moving tube (300) outer wall The external thread length is greater than the internal thread length on the inner wall of the valve body (100) end, and less than the sum of the internal thread lengths on the valve body (100) end and the internal thread lengths on the inner wall of the rotating sleeve (200); the moving tube (300) includes an extension (302), a connecting part (303) and a shielding part (304), the extension (302) and the shielding part (304) are provided at both ends of the connecting part (303), and the external thread is provided on the outer wall of the connecting part (303); The valve body (100) has a circular flange (101) at one end and a fixed protrusion (201) at the other end of the rotating sleeve (200). Washers (102) are provided on the circular flange (101) and the fixed protrusion (201). The circular flange (101) and the fixed protrusion (201) form a sealed space. Several balls (202) are provided in the sealed space. The rotating sleeve (200) and the valve body (100) rotate through the balls (202). An elastic body (501) is provided inside the locking member (500). The pipe is fixedly connected by the deformation of the elastic body (501).

2. The full-bore ball valve structure for easy connection according to claim 1, characterized in that: The end of the rotating sleeve (200) is provided with a limit stop (204).

3. The full-bore ball valve structure for easy connection according to claim 1, characterized in that: The internal thread at the end of the valve body (100) and the internal thread on the inner wall of the rotating sleeve (200) are of equal length.

4. The full-bore ball valve structure for easy connection according to claim 1, characterized in that: The length of the shielding part (304) is greater than the length of the internal thread on the inner wall of the end of the valve body (100).

5. The full-bore ball valve structure for easy connection according to claim 1, characterized in that: A sealing ring (301) is provided on the extension (302).

6. The full-bore ball valve structure for easy connection according to claim 1, characterized in that: The ends of the extension (302) and the shielding part (304) are provided with guide slopes.

7. The full-bore ball valve structure for easy connection according to claim 1, characterized in that: A clamping boss (203) is provided on the outer wall of the rotating sleeve (200).

8. The full-bore ball valve structure for easy connection according to claim 1, characterized in that: A fixing platform (502) is provided on the outer wall of the locking member (500).

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