Top-mounted corrugated pipe fixing ball valve

Abstract

The utility model provides a top-mounted corrugated pipe fixing ball valve, which belongs to the field of valves and comprises a valve body, a non-return component is arranged on one side of the valve body close to an outlet, the non-return component comprises a fixing plate, a non-return plate and a first spring, the fixing plate is connected to the valve body and provided with a first through hole and a plurality of second through holes, and the first through hole is communicated with the non-return plate. The check plate comprises a limiting part, a connecting part and a sealing plate part, the connecting part is slidably arranged in the first through hole, one end of the connecting part is connected with the limiting part, the other end of the connecting part is connected with the sealing plate part, a first sealing face is arranged on the side, close to the fixing plate, of the sealing plate part, and a second sealing face matched with the first sealing face is arranged on the side, close to the sealing plate part, of the fixing plate. The first spring sleeves the connecting part, one end of the first spring abuts against the fixing plate, and the other end of the first spring abuts against the sealing plate part. The non-return assembly and the static electricity leading-out assembly are arranged, backflow of media in the ball valve is avoided, static electricity generated in the ball valve can be led out, and potential safety hazards are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to an upper-mounted corrugated pipe fixed ball valve. BACKGROUND

[0002] As a kind of extremely important valve type, ball valve is mainly composed of valve body, ball, valve stem, sealing device and operating mechanism etc. core components. Ball valve realizes on-off control by the rotation of ball, and is widely used in petroleum, chemical industry, electric power etc. due to its simple operation and small fluid resistance. However, in some high temperature, high pressure, frequent opening and closing conditions, the sealing of conventional ball valve is easy to fail, causing medium leakage, unable to meet the needs of high-purity medium transportation, flammable and explosive and toxic fluid precision control, and the service life of valve is short.

[0003] In order to improve the sealing of ball valve, corrugated pipe assembly is used to replace traditional packing seal and part of valve seat structure. Metal corrugated pipe is a corrugated flexible structure, which has excellent elastic deformation ability, realizes static and dynamic double high sealing effect, has good sealing effect and improves the service life of ball valve. However, in some chemical production, water supply system and other conditions, not only the ball valve is required to have superior sealing property, but also the ball valve is required to have check function to prevent medium backflow from causing water pollution, chemical reaction out of control, blockage and other problems. Therefore, it is of great significance to design a corrugated pipe ball valve with check function. SUMMARY

[0004] The utility model aims at overcoming the shortcomings and deficiencies of prior art, and provides an upper-mounted corrugated pipe fixed ball valve.

[0005] The technical scheme adopted by the utility model is as follows: an upper-mounted corrugated pipe fixed ball valve, comprising a valve body, an inlet and an outlet are coaxially arranged in the valve body, a check assembly is arranged on one side of the valve body close to the outlet, the check assembly comprises a fixed plate, a check plate and a first spring, the fixed plate is connected to the valve body, and a first through hole and a plurality of second through holes are arranged on the fixed plate, the second through holes are communicated with the inlet and the outlet, the check plate comprises a limiting portion, a connecting portion and a sealing plate portion, the connecting portion is slidingly arranged in the first through hole, one end of the connecting portion is connected with the limiting portion and the other end is connected with the sealing plate portion, a first sealing surface is arranged on one side of the sealing plate portion close to the fixed plate, a second sealing surface matched with the first sealing surface is arranged on one side of the fixed plate close to the sealing plate portion, and the first spring is sleeved on the connecting portion, one end of the first spring abuts against the fixed plate, and the other end abuts against the sealing plate portion.

[0006] The first sealing surface and the second sealing surface are arc-shaped.

[0007] The upper-mounted corrugated pipe fixed ball valve further comprises an electrostatic discharge component, the valve body is internally provided with a ball, the ball is internally provided with a third through hole, and the lower end of the ball is provided with a first recess, one end of the electrostatic discharge component is arranged in the first recess, and the other end of the electrostatic discharge component is connected with the valve body.

[0008] The electrostatic discharge component comprises, from top to bottom, a conductive spring, a conductive block, a mounting block and a conductive sheet, one end of the conductive spring is connected with the ball, and the other end of the conductive spring is connected with the conductive block, the mounting block is connected with the valve body, and the conductive sheet is used for connecting a ground wire or an external component, and the conductive spring, the conductive block, the mounting block and the conductive sheet form an electrostatic path.

[0009] The conductive block is provided with a steel ball below, the mounting block is provided with a second recess matched with the steel ball, and the steel ball is slidingly arranged in the second recess.

[0010] The conductive block is provided with a limiting column, and the conductive spring is sleeved on the limiting column.

[0011] The conductive sheet is connected with the mounting block through a bolt, a second spring is arranged between the conductive sheet and the bolt, and the second spring is sleeved on the bolt.

[0012] The valve body is symmetrically provided with a valve seat assembly, the valve seat assembly comprises a valve seat and a corrugated pipe, the valve seat abuts against the ball, one end of the corrugated pipe abuts against the valve seat, and the other end of the corrugated pipe abuts against the valve body.

[0013] The valve seat is provided with a third spring at the rear, one end of the third spring abuts against the valve seat, and the other end of the third spring abuts against the valve body.

[0014] The upper-mounted corrugated pipe fixed ball valve further comprises a valve cover, the ball is provided with a valve rod at the upper end, the valve rod penetrates out of the valve cover and is connected with an actuator, and a sealing ring is arranged between the valve rod and the valve cover.

[0015] The upper-mounted corrugated pipe fixed ball valve has the following beneficial effects:

[0016] 1. The check assembly is arranged, so that backflow of medium in the ball valve is avoided.

[0017] 2. The electrostatic discharge component is arranged, so that electrostatic generated in the ball valve can be discharged to a ground wire or an external component, and a safety hazard is avoided.

[0018] 3. The corrugated pipe valve seat is arranged, so that the sealing performance of the ball valve is improved. DRAWINGS EXPLANATION

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0020] Figure 1 This is a schematic diagram of the present invention;

[0021] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0022] Figure 3 for Figure 1 Enlarged view of B in the middle;

[0023] Figure 4 for Figure 1 A magnified view of C. Detailed Implementation

[0024] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0025] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0026] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0027] Example 1:

[0028] like Figures 1 to 4 The image shown is one embodiment of this utility model:

[0029] The utility model provides a kind of upper-mounted bellows fixed ball valve, including valve body 1, ball 3 and bonnet 6, third through hole 31 is provided in the ball 3, valve seat assembly 5 is symmetrically provided in the valve body 1, the valve seat assembly 5 includes valve seat 51 and bellow 52, the valve seat 51 is in contact with ball 3, the bellow 52 one end is in contact with valve seat 51 and the other end is in contact with valve body 1, the valve seat 51 is always in contact with ball 3 by the telescopic deformation of bellow 52, guarantee sealing property.The valve seat 51 rear is provided with third spring 53, one end of the third spring 53 is in contact with valve seat 51 and the other end is in contact with valve body 1.

[0030] The upper end of the ball 3 is provided with valve stem 7, the valve stem 7 is connected with actuator for controlling the rotation of ball 3 to complete the opening and closing of ball valve, and the valve stem 7 is provided with sealing ring 8 between the valve stem 7 and bonnet 6 to prevent medium leakage into the bonnet 6.

[0031] The valve body 1 is coaxially provided with inlet 11 and outlet 12, the valve body 1 is provided with check assembly 2 on the side close to outlet 12, the check assembly 2 includes fixed plate 21, check plate and first spring 23, the fixed plate 21 is connected to the valve body 1, and the fixed plate 21 is provided with first through hole 211 and a plurality of second through holes 212, the second through holes 212 are communicated with the inlet 11 and the outlet 12, the check plate includes limiting portion 221, connecting portion 222 and sealing plate portion 223, the connecting portion 222 is slidingly provided in the first through hole 211, one end of the connecting portion 222 is connected with the limiting portion 221 and the other end is connected with the sealing plate portion 223, the sealing plate portion 223 is provided with first sealing surface 2231 on the side close to the fixed plate 21, the fixed plate 21 is provided with second sealing surface 213 matched with the first sealing surface 2231 on the side close to the sealing plate portion 223, the first spring 23 is sleeved on the connecting portion 222, and one end of the first spring 23 is in contact with the fixed plate 21 and the other end is in contact with the sealing plate portion 223.When the ball valve is opened, the medium flows from the inlet 11 to the ball 3, then the medium flows to the second through hole 212 and pushes the sealing plate portion 223 away from the fixed plate 21, and finally the medium flows out of the outlet 12, but when the medium backflows, the medium pushes the sealing plate portion 223 to abut against the fixed plate 21 to form a seal, and the medium cannot pass through the sealing plate portion 223, thereby playing a check role.Moreover, the first sealing surface 2231 and the second sealing surface 213 are arc-shaped, and an arc-shaped sealing portion is formed between the first sealing surface 2231 and the second sealing surface 213, thereby improving the sealing property.

[0032] When the medium flows in the ball valve, the friction between the medium molecules and the inner surface of the ball valve including the ball, the valve seat and other components will occur, and the friction process will accumulate electric charges on the surface of the ball valve, thereby generating static electricity. The static electricity generated in the ball valve is prone to cause fire and explosion and other safety hazards. Therefore, the upper-mounted corrugated pipe fixed ball valve further comprises a static electricity leading-out assembly 4, a first groove 32 is arranged at the lower end of the ball 3, one end of the static electricity leading-out assembly 4 is arranged in the first groove 32 and the other end is connected with the valve body 1. The static electricity leading-out assembly 4 comprises, from top to bottom, a conductive spring 41, a conductive block 42, a mounting block 43 and a conductive sheet 44, a limiting column 422 is arranged on the conductive block 42, the conductive spring 41 is sleeved on the limiting column 422, one end of the conductive spring 41 is connected with the ball 3 and the other end is connected with the conductive block 42, the mounting block 43 is connected with the valve body 1, the conductive sheet 44 is used for connecting the ground wire or the external component, and the conductive spring 41, the conductive block 42, the mounting block 43 and the conductive sheet 44 form a static electricity path, and the static electricity generated by the ball valve is led out to the ground wire or the external component. In order to enhance the conductivity of the static electricity leading-out assembly 4, a steel ball 421 is arranged below the conductive block 42, a second groove 431 matched with the steel ball 421 is arranged on the mounting block 43, and the steel ball 421 is slidingly arranged in the second groove 431. The conductive sheet 44 is connected with the mounting block 43 through a bolt 45, a second spring 46 is arranged between the conductive sheet 44 and the bolt 45, the second spring 46 is sleeved on the bolt 45, and the pre-tightening force of the second spring 46 is used to prevent the connection between the conductive sheet 44 and the mounting block 43 from being loose, thereby affecting the effect of static electricity leading-out.

[0033] The above only discloses preferred embodiments of the present application, and of course cannot limit the scope of the present application, therefore equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. An upper-mounted corrugated pipe fixed ball valve comprising a valve body (1), an inlet (11) and an outlet (12) are coaxially arranged in the valve body (1), characterized in that, The valve body (1) is provided with a check assembly (2) on one side close to the outlet (12), the check assembly (2) comprises a fixed plate (21), a check plate and a first spring (23), the fixed plate (21) is connected to the valve body (1), and the fixed plate (21) is provided with a first through hole (211) and a plurality of second through holes (212), the second through holes (212) are communicated with the inlet (11) and the outlet (12), the check plate comprises a limiting portion (221), a connecting portion (222) and a sealing plate portion (223), the connecting portion (222) is slidingly arranged in the first through hole (211), one end of the connecting portion (222) is connected with the limiting portion (221) and the other end is connected with the sealing plate portion (223), the sealing plate portion (223) is provided with a first sealing surface (2231) on one side close to the fixed plate (21), the fixed plate (21) is provided with a second sealing surface (213) matched with the first sealing surface (2231) on one side close to the sealing plate portion (223), and the first spring (23) is sleeved on the connecting portion (222), one end of the first spring (23) abuts against the fixed plate (21), and the other end abuts against the sealing plate portion (223).

2. A top-mounted, bellowed fixed ball valve according to claim 1, characterized in that The first sealing surface (2231) and the second sealing surface (213) are arc-shaped.

3. A top-mounted, bellowed fixed ball valve according to claim 1, wherein Further comprising an electrostatic discharge assembly (4), the valve body (1) is provided with a ball (3), the ball (3) is provided with a third through hole (31) and a first groove (32) at the lower end, one end of the electrostatic discharge assembly (4) is arranged in the first groove (32) and the other end is connected with the valve body (1).

4. A top-mounted, bellowed fixed ball valve according to claim 3, wherein The electrostatic discharge assembly (4) comprises an electrically conductive spring (41), an electrically conductive block (42), a mounting block (43) and an electrically conductive sheet (44) from top to bottom, one end of the electrically conductive spring (41) is connected with the ball (3) and the other end is connected with the electrically conductive block (42), the mounting block (43) is connected with the valve body (1), the electrically conductive sheet (44) is used for connecting ground wire or external component, and the electrically conductive spring (41), the electrically conductive block (42), the mounting block (43) and the electrically conductive sheet (44) form an electrostatic path.

5. A top-mounted, bellowed fixed ball valve according to claim 4, wherein, The electrically conductive block (42) is provided with a steel ball (421) at the lower end, the mounting block (43) is provided with a second groove (431) matched with the steel ball (421), and the steel ball (421) is slidingly arranged in the second groove (431).

6. A top-mounted, bellowed fixed ball valve according to claim 5, wherein, The electrically conductive block (42) is provided with a limiting column (422) on the upper end, and the electrically conductive spring (41) is sleeved on the limiting column (422).

7. A top-mounted, bellowed, fixed ball valve according to claim 6, wherein, The electrically conductive sheet (44) is connected with the mounting block (43) through a bolt (45), a second spring (46) is arranged between the electrically conductive sheet (44) and the bolt (45), and the second spring (46) is sleeved on the bolt (45).

8. A top-mounted, bellowed, fixed ball valve according to claim 3, wherein, The valve body (1) is provided with a valve seat assembly (5) symmetrically, the valve seat assembly (5) comprises a valve seat (51) and a bellows (52), the valve seat (51) abuts against the ball (3), one end of the bellows (52) abuts against the valve seat (51) and the other end abuts against the valve body (1).

9. A top-mounted, bellowed, fixed ball valve according to claim 8, wherein, A third spring (53) is arranged behind the valve seat (51), one end of the third spring (53) abutting the valve seat (51) and the other end abutting the valve body (1).

10. A top-mounted, bellowed, fixed ball valve according to claim 3, wherein, A valve cover (6) is further included, an upper end of the ball (3) being provided with a valve stem (7), the valve stem (7) penetrating through the valve cover (6) and being connected with an actuator, a sealing ring (8) being arranged between the valve stem (7) and the valve cover (6).

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