A shear valve for harsh media

Abstract

The utility model relates to the technical field of shear valves, and specifically to a shear valve for harsh media, comprising: a shear valve structure; the shear valve structure is equipped with a valve core structure, and a circulating drainage structure is detachably installed on the side of the shear valve structure; the shear valve structure includes a shear valve body, and valve pipes are sealed and fixed on both sides of the shear valve body, and flange 1 is integrally fixed on one end of the outer side of the valve pipe. In the utility model, after the second cylinder is started, thrust is generated, and the valve core body is lowered inside the shear valve body to between the valve pipes, and the valve pipes are sheared and sealed through the shear valve body. After the first cylinder is started, the vertical frame is lowered along the inner wall of the valve core body, so that one end of the inclined surface of the vertical frame moves downward along the inclined groove, and the extended valve sheet inside the reset groove is moved to the inner side of the valve pipe through the vertical frame. The sealing performance of the valve core body is increased through the extended valve sheet, which is convenient for increasing the sealing performance of shearing and blocking the water source when conveying water sources of harsh media.

Description

Technical Field

[0001] The utility model relates to the technical field of shear valves, in particular to a shear valve used for harsh media. Background Art

[0002] Shear valves are suitable for working under various harsh media conditions such as viscous slurries, corrosive liquids or gases in the petroleum, chemical, electric power, and environmental protection industries. The valve seat sealing structure of the valves used is relatively general. A Chinese patent discloses a new type of high-temperature and ultra-wear-resistant shear valve (authorization announcement number CN202418674U). The patent technology discloses a new type of high-temperature and ultra-wear-resistant shear valve, which is characterized in that an annular groove is provided on the pipe wall of the inlet flow channel at the outer end of the movable valve seat, and a bellows is embedded in the annular groove. The inner end of the bellows abuts the outer end of the movable valve seat, and the pipe direction of the bellows is consistent with the direction of the inlet flow channel. Compared with the prior art, the utility model has balanced force on the valve seat by the medium, good floating effect, low requirements on the sealing surface, and short sealing joint surface; under high temperature, the bellows floats along the axis direction, the valve seat is not easy to get stuck during the floating process, and the high-temperature floating effect is good; the bellows valve body and valve seat are designed as an integral whole, and various viscous slurries, solid-liquid two-phase suspensions, liquids and gases containing long fibers or particles and other harsh media are not easy to enter between the valve seat and the valve body to affect the valve seat, so the valve is more suitable for various viscous slurries, solid-liquid two-phase suspensions, liquids and gases containing long fibers or particles and other harsh media. This patented technology solves the problem that the valve seat sealing structure is the key to the valve sealing performance and will directly affect the safe and reliable operation of the pipeline system.

[0003] However, in the prior art, the shear valve core is directly inserted from top to bottom into the middle of the valve body between the pipes, blocking the water flow. However, water can easily flow into the valve body along the gap of the valve core under high pressure, resulting in reduced sealing. It is necessary to solve the problem of sealing both sides of the valve body to reduce the water flow entering the valve body after the valve core falls and cuts off the water source.

[0004] Therefore, those skilled in the art provide a shear valve for harsh media to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides:

[0006] A shear valve for harsh media, comprising: a shear valve structure; the shear valve structure is equipped with a valve core structure, and a circulating drainage structure is detachably installed on the side of the shear valve structure; the shear valve structure includes a shear valve body, valve pipes are sealed and fixed on both sides of the shear valve body, and a flange is integrally fixed on one end of the outer side of the valve pipe; the valve core structure includes a valve core body movably arranged on the inner side of the shear valve body, reset grooves are opened on both sides of the valve core body, and an extended valve plate is movably arranged inside the reset groove.

[0007] Preferably: a movable cylinder is fixedly mounted at the center of the extended valve sheet, the movable cylinder is movably arranged on the inner wall of the valve core body, and a return spring is installed between the movable cylinder and the valve core body.

[0008] The reset spring is used to stretch and reset the space between the movable cylinder and the valve core body at the inner side of the reset groove.

[0009] Preferably, an inclined groove is provided on the top of the extended valve sheet.

[0010] Preferably: a vertical frame is provided on the inner wall of the valve core body for vertical sealing movement, and the bottom surface of the vertical frame is an inclined surface.

[0011] Preferably, the top sealing portion of the vertical frame is movable through the outside of the valve core body, and a cylinder 1 is installed between the vertical frame and the valve core body.

[0012] The cylinder 1 is used for extending and moving the vertical frame vertically to the inner side of the reset groove.

[0013] Preferably: a second cylinder is installed on the surface of the valve core body, the cylinder body of the second cylinder is installed outside the shear valve body, and a positioning frame is fixedly installed on the outer wall of the second cylinder.

[0014] The second cylinder is installed on the top wall of the shear valve body through a positioning frame.

[0015] Preferably: a controller is installed on the outer wall of the positioning frame.

[0016] A ceramic inner tube is detachably mounted inside the valve tube, a circulating bucket valve member is integrally provided at the bottom of the shear valve body, and a circulating bottom valve member is integrally sealed at the bottom of the circulating bucket valve member.

[0017] The circulating drainage structure includes a flange 3 detachably mounted on the outer wall of the circulating bottom valve member, an upper row pipe is sealedly arranged on the outer edge of the flange 3, a butt pipe is passed through the top of the upper row pipe, and flanges 4 are fixedly arranged at both ends of the butt pipe;

[0018] The butt joint pipe of the circulating drainage structure is detachably mounted on the side of flange one of the valve pipe through flange four.

[0019] Technical effects and advantages of the utility model:

[0020] The utility model generates thrust after the second cylinder is started, and the valve core body is lowered to between the valve tubes inside the shear valve body, and the valve tubes are sheared and sealed by the shear valve body. After the first cylinder is started, the vertical frame is lowered along the inner wall of the valve core body, so that one end of the inclined surface of the vertical frame moves downward along the inclined groove, and the extended valve plate inside the reset groove is moved to the inside of the valve tube by the vertical frame. The sealing performance of the valve core body is increased by the extended valve plate, so that the sealing performance of the shear blocking water source is increased when conveying water source with harsh media. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a shear valve for harsh media provided in an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram of the front structure of a shear valve for harsh media provided in an embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the structure of cylinder 2 in a shear valve for harsh media provided in an embodiment of the present application;

[0024] Figure 4 It is a structural schematic diagram of a valve core structure in a shear valve for harsh media provided in an embodiment of the present application;

[0025] Figure 5 It is a structural schematic diagram of a circulating drainage structure in a shear valve for harsh media provided in an embodiment of the present application.

[0026] In the figure:

[0027] 1. Shear valve structure; 101. Shear valve body; 102. Valve pipe; 103. Flange 1; 104. Ceramic inner tube; 105. Circulation bucket valve member; 106. Circulation bottom valve member;

[0028] 2. Valve core structure; 201. Valve core body; 202. Reset groove; 203. Extended valve plate; 204. Movable cylinder; 205. Reset spring; 206. Inclined groove; 207. Vertical frame; 208. Inclined surface; 209. Cylinder 1; 210. Cylinder 2; 211. Positioning frame;

[0029] 3. Circulation drainage structure; 301. Flange three; 302. Flange four; 303. Butt pipe; 304. Upper drainage pipe;

[0030] 4. Controller. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0032] Example:

[0033] See also Figures 1 to 5In this embodiment, a shear valve for harsh media is provided, comprising: a shear valve structure 1; the shear valve structure 1 is equipped with a valve core structure 2, and a circulating drainage structure 3 is detachably installed on the side of the shear valve structure 1; the shear valve structure 1 comprises a shear valve body 101, and valve pipes 102 are sealed and fixed on both sides of the shear valve body 101, and a flange 103 is integrally fixed on one end of the outer side of the valve pipe 102;

[0034] The valve core structure 2 includes a valve core body 201 movably arranged inside the shear valve body 101, and reset grooves 202 are provided on both sides of the valve core body 201, and an extended valve plate 203 is movably arranged inside the reset groove 202; a movable cylinder 204 is fixedly mounted at the center of the extended valve plate 203, and the movable cylinder 204 is movably arranged on the inner wall of the valve core body 201, and a reset spring 205 is installed between the movable cylinder 204 and the valve core body 201;

[0035] The reset spring 205 is used to stretch and reset the movable cylinder 204 and the valve core body 201 inside the reset groove 202;

[0036] The top of the extended valve plate 203 is provided with an inclined groove 206; the inner wall of the valve core body 201 is vertically and sealably provided with a vertical frame 207, and the bottom surface of the vertical frame 207 is an inclined surface 208; the top sealing movement of the vertical frame 207 penetrates the outside of the valve core body 201, and a cylinder 209 is installed between the vertical frame 207 and the valve core body 201; the cylinder 209 is used to extend the vertical frame 207 to the inside of the reset groove 202;

[0037] The surface of the valve core body 201 is installed with a cylinder 210, the cylinder body of the cylinder 210 is installed outside the shear valve body 101, and a positioning frame 211 is fixedly installed on the outer wall of the cylinder 210; the cylinder 210 is installed on the top wall of the shear valve body 101 through the positioning frame 211; the outer wall of the positioning frame 211 is installed with a controller 4; the valve tube 102 is detachably installed with a ceramic inner tube 104, and the bottom of the shear valve body 101 is integrally provided with a circulating bucket valve member 105, and the bottom of the circulating bucket valve member 105 is integrally sealed with a circulating bottom valve member 106;

[0038] The circulating drainage structure 3 includes a flange three 301 which is detachably mounted on the outer wall of the circulating bottom valve member 106, an upper row pipe 304 is sealed on the outer edge of the flange three 301, a butt joint pipe 303 is passed through the top of the upper row pipe 304, and flanges four 302 are fixed at both ends of the butt joint pipe 303; the butt joint pipe 303 of the circulating drainage structure 3 is detachably mounted on the side of the flange one 103 of the valve pipe 102 through the flange four 302.

[0039] Working principle:

[0040] When the shear valve structure 1 is closed, the second cylinder 210 is started, and the second cylinder 210 generates thrust after being started, so that the valve core body 201 is lowered inside the shear valve body 101 to the valve tube 102, and the valve tube 102 is sheared and sealed through the shear valve body 101. Then, after the first cylinder 209 is started, the vertical frame 207 is lowered along the inner wall of the valve core body 201, so that one end of the inclined surface 208 of the vertical frame 207 moves downward along the inclined groove 206, and the extended valve plate 203 inside the reset groove 202 is moved to the inner side of the valve tube 102 through the vertical frame 207. The sealing performance of the valve core body 201 is increased through the extended valve plate 203, so as to increase its sealing performance of shearing and blocking the water source when conveying water sources with harsh media;

[0041] When the shear valve structure 1 is opened, the cylinder 1 209 is reset first, and the vertical frame 207 rises from the inside of the reset groove 202, so that the extended valve plate 203 rebounds to the inside of the reset groove 202 through the contracted reset spring 205 and separates from the inner side of the valve tube 102, and then the cylinder 210 is reset, and the valve core body 201 rises inside the shear valve body 101, and the shear valve structure 1 is opened;

[0042] The water source with harsh media is transported to the external pipeline through the shear valve body 101 between the ceramic inner tubes 104, and the particles in the water source and other blockages left inside the shear valve body 101 are diverted into the water source inside the circulating bottom valve member 106 connected to the circulating bucket valve member 105, and are discharged into the docking pipe 303 along with the water flow through the upper discharge pipe 304, so as to facilitate the flushing of the blockage.

[0043] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0044] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A shear valve for harsh media, characterized in that: include: A shear valve structure (1); the shear valve structure (1) is equipped with a valve core structure (2), and a circulating drainage structure (3) is detachably mounted on the side of the shear valve structure (1); The shear valve structure (1) comprises a shear valve body (101), both sides of the shear valve body (101) are sealed and fixed with valve pipes (102), and one end of the outer side of the valve pipe (102) is integrally fixed with a flange 1 (103); The valve core structure (2) comprises a valve core body (201) movably arranged inside the shear valve body (101), and both sides of the valve core body (201) are provided with reset grooves (202), and an extended valve plate (203) is movably arranged inside the reset groove (202).

2. A shear valve for harsh media according to claim 1, characterized in that: A movable cylinder (204) is fixedly mounted at the center of the extended valve plate (203), the movable cylinder (204) is movably arranged on the inner wall of the valve core body (201), and a return spring (205) is installed between the movable cylinder (204) and the valve core body (201).

3. A shear valve for harsh media according to claim 2, characterized in that: An inclined groove (206) is formed on the top of the extended valve plate (203).

4. A shear valve for harsh media according to claim 2, characterized in that: The inner wall of the valve core body (201) is provided with a vertical frame (207) for sealing and movement, and the bottom surface of the vertical frame (207) is an inclined surface (208).

5. A shear valve for harsh media according to claim 4, characterized in that: The top sealing portion of the vertical frame (207) is movably connected to the outside of the valve core body (201), and a cylinder 1 (209) is installed between the vertical frame (207) and the valve core body (201).

6. A shear valve for harsh media according to claim 5, characterized in that: The surface of the valve core body (201) is mounted with a second cylinder (210), the cylinder body of the second cylinder (210) is mounted outside the shear valve body (101), and a positioning frame (211) is fixedly mounted on the outer wall of the second cylinder (210).

7. A shear valve for harsh media according to claim 6, characterized in that: A controller (4) is installed on the outer wall of the positioning frame (211).

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