Integral angle hard seal ball valve

Abstract

The utility model relates to ball valve technical field, specifically is a kind of integrated oblique hard sealing ball valve, including valve body, the cavity of valve body is provided with ball, the fluid passage is passed through and is established in the center of ball, the outer wall of ball is provided with linkage recess, the outer wall of valve body is connected with oblique valve stem sleeve, the inner wall between oblique valve stem sleeve is installed with valve stem body, and the one end lug of valve stem body and linkage recess are mutually clamped, the one end round groove of valve stem body is externally clamped with split ring, and the split ring and the recess between the lower part of oblique valve stem sleeve are provided with wear-reducing pad;Through the mutual cooperation between oblique valve stem sleeve and split ring, wear-reducing pad, pressing plate and cavity filler in valve body, valve stem body is installed, there is certain inclination angle between valve stem body and valve body, and then prevent the situation that the rotation efficiency of valve stem body is low due to the narrow space above installation, guarantee the opening and closing efficiency of ball.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically an integrated oblique hard-seal ball valve. Background Technology

[0002] A ball valve is a valve in which the opening and closing element (ball) is driven by the valve stem and rotates around the valve axis. It can also be used for fluid regulation and control. Among them, the hard-seal V-type ball valve has a strong shearing force between the V-shaped ball core and the metal valve seat with hard alloy overlay, making it particularly suitable for media containing fibers, small solid particles, etc.

[0003] A ball valve mainly consists of a valve body, a ball, and a valve stem. The ball is installed in the cavity inside the valve body, and the axis of the fluid passage on the side wall of the ball can coincide with the axis of the passage inside the valve body. The valve stem, which is vertically installed inside the valve body, can control the opening and closing of the medium flowing inside the valve body by rotating the valve stem after it is linked with the ball.

[0004] In current technologies, the valve stem and valve body are mostly in a relatively vertical state. When the vertical installation space of the valve body is relatively small, the vertical space of the valve body may not be able to provide rotation space for rotating the valve stem and the outer handle, resulting in low operating efficiency and affecting the opening and closing efficiency of the ball valve. Therefore, in order to address the above problems, an integrated oblique hard seal ball valve is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies and the problem that the valve stem and valve body are mostly in a relatively vertical state, and when the vertical installation space of the valve body is relatively narrow, the vertical space of the valve body may not be able to provide rotation space for rotating the outer handle of the valve stem, resulting in low operating efficiency and thus affecting the opening and closing efficiency of the ball valve, an integrated oblique hard seal ball valve is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: An integrated oblique hard-seal ball valve of this utility model includes a valve body, a ball disposed within the cavity of the valve body, a fluid channel extending through the center of the ball, a linkage groove on the outer wall of the ball, an oblique valve stem sleeve connected to the outer wall of the valve body, a valve stem body being installed through the inner wall of the oblique valve stem sleeve, a protrusion at one end of the valve stem body engaging with the linkage groove, a split ring being fitted onto the outer groove of one end of the valve stem body, a friction-reducing pad being disposed between the split ring and the lower groove of the oblique valve stem sleeve, a pressure plate fitted onto the outer wall of the valve stem body, the pressure plate being bolted to the top cover of the oblique valve stem sleeve, and a cavity packing being fitted onto the outer side of the valve stem body, the cavity packing being located between the bottom surface of the pressure plate and the upper groove of the oblique valve stem sleeve.

[0007] Preferably, a valve cover is bolted to one end of the valve body opening, and a convex ring at one end of the valve cover is fitted onto the inner wall of the cavity of the valve body. Valve seat assemblies are symmetrically arranged on the outer wall of the ball, with one valve seat assembly fitted between the inner walls of the convex ring of the valve cover and the other valve seat assembly fitted between the inner walls of the cavity of the valve body.

[0008] Preferably, the valve seat assembly includes an annular valve seat, the annular valve seat coincides with the centerline of the fluid channel, one inclined wall of the annular valve seat is in contact with the outer wall of the ball, and a graphite valve seat is fitted on the outer wall of the annular valve seat.

[0009] Preferably, the valve seat assembly includes an annular valve seat, the annular valve seat coincides with the centerline of the fluid channel, one inclined wall of the annular valve seat is in contact with the outer wall of the ball, and a graphite valve seat is fitted on the outer wall of the annular valve seat.

[0010] Preferably, a butterfly spring is filled between the cavity sidewall of the valve body and one outer wall of the secondary valve seat.

[0011] Preferably, a handle is fitted onto the outer wall of the protrusion at one end of the valve stem body, and the handle and the valve stem body are fixed together by a pin.

[0012] Preferably, a rotating limiting plate is fitted onto the outer wall of the protrusion at one end of the valve stem body.

[0013] Preferably, the rotating limiting plate is located between the adjacent side walls of the pressure plate and the handle, and the two outer walls of the rotating limiting plate can respectively contact and limit the bolts on both sides of the pressure plate.

[0014] The beneficial effects of this utility model are:

[0015] I. In this utility model, the valve stem body is installed by the mutual cooperation between the inclined valve stem sleeve in the valve body and the split ring, anti-friction pad, pressure plate and cavity packing, so that there is a certain tilt angle between the valve stem body and the valve body, thereby preventing the valve stem body from having low rotation efficiency due to the narrow space above the installation location, and ensuring the opening and closing efficiency of the ball.

[0016] Second, in this utility model, the ball is a rigid structure, and the valve seat assembly that is clamped between the valve body, the ball, and the valve cover to assist in the installation of the ball is also a rigid structure. However, the ball is not a complete spherical structure, which makes it impossible to guarantee its relative length with the overall assembly during rotation, resulting in liquid leakage. The elastic force provided by the butterfly spring can ensure that the ball and the valve seat assembly are always in a tight fit, preventing fluid leakage and increasing the rationality of the device structure. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a perspective view of a partial cross-section of the valve body in this utility model;

[0020] Figure 3 This is a three-dimensional view of a partial disassembled valve stem body in this utility model;

[0021] Figure 4 This is a three-dimensional view of a partially disassembled sphere in this utility model;

[0022] Legend:

[0023] 1. Valve body; 2. Ball; 21. Fluid passage; 22. Linkage groove; 11. Inclined valve stem sleeve; 3. Valve stem body; 31. Split ring; 32. Anti-friction pad; 4. Pressure plate; 41. Cavity packing; 5. Valve cover; 6. Valve seat assembly; 61. Annular valve seat; 62. Graphite valve seat; 7. Subsidiary valve seat; 8. Butterfly spring; 9. Handle; 10. Rotary limit plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] Please see Figure 1 - Figure 4This utility model provides an integrated oblique hard-seal ball valve, including a valve body 1, a ball 2 disposed within the cavity of the valve body 1, a fluid channel 21 extending through the center of the ball 2, a linkage groove 22 formed on the outer wall of the ball 2, an oblique valve stem sleeve 11 connected to the outer wall of the valve body 1, a valve stem body 3 installed through the inner wall of the oblique valve stem sleeve 11, a protrusion at one end of the valve stem body 3 engaging with the linkage groove 22, a split ring 31 fitted onto the outer groove of one end of the valve stem body 3, a friction-reducing pad 32 disposed between the split ring 31 and the lower groove of the oblique valve stem sleeve 11, a pressure plate 4 fitted onto the outer wall of the valve stem body 3, the pressure plate 4 and the top cover of the oblique valve stem sleeve 11 being connected by bolts, a cavity packing 41 fitted onto the outer side of the valve stem body 3, the cavity packing 41 being located between the bottom surface of the pressure plate 4 and the upper groove of the oblique valve stem sleeve 11, and the ball 2 being installed... Within the cavity of valve body 1, the valve stem body 3, installed within the inclined valve stem sleeve 11, engages with one end of the valve stem body 3 via a linkage groove 22 on its outer wall. Therefore, rotating the valve stem body 3 causes the ball 2 to rotate around the axis of the valve stem body 3 until the fluid passage 21 is completely blocked. At this point, valve body 1 is closed, and the flow between the fluid and valve body 1 and the fluid passage 21 is stopped. The valve stem body 3, inserted into the valve body 1, engages with the open ring 31 to prevent it from detaching from the inclined valve stem sleeve 11. The pressure plate 4, mounted on the outer wall of the valve stem body 3, is bolted to the inclined valve stem sleeve 11, thus fixing the valve stem body 3 to the valve body 1 without hindering its rotation. The anti-friction pad 32 and the cavity packing 41 work together to reduce frictional loss between the valve stem body 3 and the inner wall of the inclined valve stem sleeve 11 during rotation.

[0027] like Figure 2 and Figure 4As shown, a valve cover 5 is bolted to one end of the valve body 1. A convex ring at one end of the valve cover 5 is fitted into the inner wall of the cavity of the valve body 1. Valve seat assemblies 6 are symmetrically arranged on the outer wall of the ball 2. One valve seat assembly 6 is fitted between the inner walls of the convex rings of the valve cover 5, and the other valve seat assembly 6 is fitted between the inner walls of the cavity of the valve body 1. The valve seat assembly 6 includes an annular valve seat 61, which coincides with the axis of the fluid channel 21. One inclined wall of the annular valve seat 61 is in contact with the outer wall of the ball 2. A graphite valve seat 62 is fitted onto the outer wall of the annular valve seat 61. A secondary valve seat 7 is fitted inside the cavity of the valve body 1. The inner wall of the convex ring at one end of the secondary valve seat 7 is fitted onto the outer wall of the convex ring of the annular valve seat 61. A butterfly spring 8 is filled between the side wall of the cavity of the valve body 1 and one side of the outer wall of the secondary valve seat 7. After component 6 and ball 2 are installed in the cavity of valve body 1, the valve cover 5 and valve body 1 can be relatively fixed by bolts to complete the assembly of valve body 1 and prevent ball 2 and valve seat assembly 6 from detaching from the cavity of valve body 1. The annular valve seat 61 and graphite valve seat 62 of valve seat assembly 6 respectively limit the position of ball 2 by cooperating with the inner cavity of valve body 1 and valve cover 5, so that the liquid only flows in the flow channel of valve body 1, ball 2 and valve cover 5. However, ball 2 is not a complete spherical structure, which makes it impossible to guarantee its relative length with the whole assembly during its rotation, and liquid leakage may occur. The elastic force provided by the butterfly spring 8 on the side of the auxiliary valve seat 7 can ensure that ball 2 and valve seat assembly 6 are always in a tight fit to prevent fluid leakage.

[0028] like Figure 2 and Figure 3 As shown, a handle 9 is fitted onto the outer wall of the protrusion at one end of the valve stem body 3. The handle 9 and the valve stem body 3 are fixed together by a pin. A rotating limiting plate 10 is fitted onto the outer wall of the protrusion at one end of the valve stem body 3. The rotating limiting plate 10 is located between the adjacent side walls of the pressure plate 4 and the handle 9. The outer walls of the rotating limiting plate 10 on both sides can contact and limit the bolts on both sides of the pressure plate 4. The handle 9 is installed on the outside of the protrusion at one end of the valve stem body 3 by a pin, so that the device can rotate and adjust the ball 2 and the valve stem body 3 by rotating the handle 9 to realize the opening and closing control of the valve body 1. The rotating limiting plate 10, which is clamped on the outside of the protrusion of the valve stem body 3, can limit the rotation by contacting the bolts on the outside of the pressure plate 4 with its side wall. This allows the device to intuitively judge the on / off state of the valve body 1 by the position of the rotating limiting plate 10, preventing the situation where the on / off state of the valve body 1 cannot be judged.

[0029] Working principle: The ball 2 is installed in the cavity of the valve body 1, and can engage with one end of the valve stem body 3 installed in the inclined valve stem sleeve 11 through the linkage groove 22 on its outer wall. Therefore, the process of rotating the valve stem body 3 can drive the ball 2 to rotate around the axis of the valve stem body 3 until the fluid passage 21 is completely blocked. At this time, the valve body 1 is closed, and the flow between the fluid and the valve body 1 and the fluid passage 21 is stopped. The valve stem body 3 is inserted into the valve body 1 and engages with the open ring 31 to prevent it from engaging with the inclined valve stem sleeve 11. When the valve stem sleeve 11 detaches, the pressure plate 4, which is clamped to the outer wall of the valve stem body 3, is fixed to the inclined valve stem sleeve 11 with bolts. This achieves the fixation of the valve body 1 to the valve stem body 3 without hindering the rotation of the valve stem body 3. The anti-friction pad 32 and the cavity packing 41 work together to reduce the frictional loss between the valve stem body 3 and the inner wall of the inclined valve stem sleeve 11 during the rotation of the valve stem body 3. After the valve seat assembly 6 and the ball 2 are installed in the cavity of the valve body 1, the valve cover 5 and the valve body 1 can be relatively fixed with bolts to complete the assembly of the valve body 1. To prevent the ball 2 and valve seat assembly 6 from detaching from the cavity of valve body 1, the annular valve seat 61 and graphite valve seat 62 of valve seat assembly 6 respectively limit the position of the ball 2 by cooperating with the inner cavity of valve body 1 and valve cover 5, ensuring that the liquid only flows within the flow channels of valve body 1, ball 2, and valve cover 5. However, the ball 2 is not a complete spherical structure, which means that its relative length to the overall assembly cannot be guaranteed during rotation, resulting in liquid leakage. The elastic force provided by the butterfly spring 8 on the side of the auxiliary valve seat 7 can ensure that the ball 2 and... The valve seat assemblies 6 are always in a tight fit to prevent fluid leakage. The handle 9 is installed on the protrusion at one end of the valve stem body 3 by a pin, so that the device can rotate the ball 2 and the valve stem body 3 by rotating the handle 9 to control the opening and closing of the valve body 1. The rotation limiting plate 10, which is clamped on the protrusion of the valve stem body 3, can limit the rotation by contacting the bolt on the pressure plate 4 with its side wall. This allows the device to intuitively judge the opening and closing of the valve body 1 by the position of the rotation limiting plate 10.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An integrated angle hard-seated ball valve comprising a valve body (1), characterized in that: A ball (2) is disposed inside the cavity of the valve body (1). A fluid channel (21) is provided through the center of the ball (2). A linkage groove (22) is provided on the outer wall of the ball (2). An inclined valve stem sleeve (11) is connected to the outer wall of the valve body (1). A valve stem body (3) is installed through the inner wall of the inclined valve stem sleeve (11). A protrusion at one end of the valve stem body (3) engages with the linkage groove (22). A circular groove at one end of the valve stem body (3) The outer casing is fitted with a split ring (31), and a friction-reducing pad (32) is provided between the split ring (31) and the lower groove of the inclined valve stem sleeve (11). A pressure plate (4) is fitted on the outer wall of the valve stem body (3). The pressure plate (4) and the top cover of the inclined valve stem sleeve (11) are connected by bolts. A cavity packing (41) is fitted on the outer casing of the valve stem body (3). The cavity packing (41) is located between the bottom surface of the pressure plate (4) and the upper groove of the inclined valve stem sleeve (11).

2. The integrally seated hard-seated ball valve according to claim 1, wherein: One end of the valve body (1) is bolted to a valve cover (5). One end of the valve cover (5) is fitted with a convex ring on the inner wall of the cavity of the valve body (1). The outer wall of the ball (2) is symmetrically provided with valve seat assemblies (6). One valve seat assembly (6) is fitted between the inner walls of the convex ring of the valve cover (5), and the other valve seat assembly (6) is fitted between the inner walls of the cavity of the valve body (1).

3. The integrally seated hard-seated ball valve according to claim 2, wherein: The valve seat assembly (6) includes an annular valve seat (61), which coincides with the axis of the fluid channel (21). One side of the annular valve seat (61) is fitted with the outer wall of the ball (2), and a graphite valve seat (62) is fitted on the outer wall of the annular valve seat (61).

4. The integrated oblique hard-seal ball valve according to claim 3, characterized in that: The cavity of the valve body (1) is fitted with a secondary valve seat (7), and the inner wall of the protruding ring at one end of the secondary valve seat (7) is fitted with the outer wall of the protruding ring of the annular valve seat (61).

5. The integrally seated hard-seated ball valve according to claim 4, wherein: A butterfly spring (8) is filled between the cavity sidewall of the valve body (1) and one outer wall of the auxiliary valve seat (7).

6. The integrally seated hard-seated ball valve of claim 1, wherein: A handle (9) is fitted onto the outer wall of the protrusion at one end of the valve stem body (3), and the handle (9) and the valve stem body (3) are fixed together by a pin.

7. The integrated oblique hard-seal ball valve according to claim 1, characterized in that: A rotating limiting plate (10) is fitted on the outer wall of the protrusion at one end of the valve stem body (3).

8. The integrally seated hard-seated ball valve of claim 7, wherein: The rotating limiting plate (10) is located between the adjacent side walls of the pressure plate (4) and the handle (9), and the outer walls of the two sides of the rotating limiting plate (10) can respectively contact and limit the bolts on both sides of the pressure plate (4).

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