CN212657273U

CN212657273U - Wear-resisting shear valve

Info

Publication number: CN212657273U
Application number: CN202021259337.1U
Authority: CN
Inventors: 余文孟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-03-05
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a wear-resisting shear valve, including valve base, valve body, valve gap and flashboard, seted up the runner on the valve body, the valve gap lock forms the valve pocket in the upper portion of valve body, and the valve base lock forms down the valve pocket in the lower part of valve body, goes up the valve pocket and is provided with the disk seat with valve pocket down, and the disk seat is provided with the disk seat mount including parallel relative setting's fixed valve plate and movable valve plate in going up the valve pocket and the valve pocket down respectively, seted up on the disk seat mount with the mounting hole of disk seat looks adaptation, fixed valve plate and disk seat mount fixed connection are provided with a elastic pressure device between movable valve plate and the disk seat mount. The utility model discloses well disk seat adopts and the form of wide long full laminating flashboard again, no matter in the valve pocket that can both separate the medium admission valve is opened or closed to the valve, under first elastic pressure device's effect, the sealed face in close contact with of flashboard and disk seat has improved the leakproofness of valve greatly to the life of valve has been prolonged.

Description

Wear-resisting shear valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a wear-resisting shear valve.

Background

The valve for controlling the opening and closing of the pipeline medium is a common flat valve under various severe medium working conditions in the industries of chemical industry, petroleum, natural gas, power plants, coal chemical industry, construction, sewage treatment, light industry and the like. In the valve working process, when impurities in a pipeline, such as welding slag, metal wires, fibers, coal powder, particles, catalyst, slag and the like, can enter an inner cavity of a valve body, various severe impurities, such as catalyst, coal slurry, slag and the like, can coke easily at low temperature, when the valve is opened and closed, the impurities can be deposited or blocked between sealing surfaces, and because a common valve does not have an impurity shearing function, the valve is easy to block, the sealing surfaces are pulled to cause the valve to be incapable of being opened and closed, and sealing leakage can be caused.

The valve opens and close the in-process and relies on the pressure of valve entrance department medium to push the flashboard to export disk seat, realizes that the valve is sealed but under long-term the use, the sealed face of flashboard can produce wearing and tearing with the disk seat, influences sealed effect, reduces valve life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wear-resisting shear valve to above-mentioned prior art not enough.

In order to solve the above problems, the utility model adopts the following technical proposal:

a wear-resistant shear valve comprises a valve base, a valve body, a valve cover and a flashboard, wherein the valve body is provided with a flow passage, the valve cover is buckled on the upper part of the valve body to form an upper valve cavity communicated with the flow channel, the valve base is buckled on the lower part of the valve body to form a lower valve cavity communicated with the flow channel, the upper valve cavity and the lower valve cavity are oppositely arranged, valve seats matched with the flashboards are arranged in the upper valve cavity and the lower valve cavity, the middle part of the valve seat is provided with a through hole corresponding to the flow channel, the valve seat comprises a fixed valve plate and a movable valve plate which are oppositely arranged in parallel, the upper valve cavity and the lower valve cavity are respectively provided with a valve seat fixing frame, the valve seat fixing frame is provided with a mounting hole matched with the valve seat, the fixed valve plate is fixedly connected with the valve seat fixing frame, and a first elastic pressure device is arranged between the movable valve plate and the valve seat fixing frame.

Furthermore, the first elastic pressure device comprises a first pre-tightening spring, a mounting groove is formed in one side, corresponding to the valve seat fixing frame, of the movable valve plate, the first pre-tightening spring is arranged in the mounting groove, a connecting piece matched with the mounting groove is arranged on the valve seat fixing frame, and the end portion of the connecting piece is abutted to one end of the first pre-tightening spring.

Furthermore, a second elastic pressure device is arranged between the movable valve plate and the valve seat.

Furthermore, the second elastic pressure device comprises two spring seats with opposite openings, a second pre-tightening spring is arranged between the two spring seats, one spring seat is abutted against the valve body, and the other spring seat is abutted against the movable valve plate.

Further, valve seat sealing gaskets are arranged on the outer sides of the two spring seats.

Furthermore, a flow guide hole matched with the flow channel is formed in the flashboard, the flashboard is matched with the fixed valve plate and the movable valve plate respectively to form a sealing pair, and a connecting channel of the flow channel and the upper valve cavity and the lower valve cavity is sealed.

Furthermore, the corners of the contact positions of the flashboards and the sealing surfaces of the fixed valve plate and the movable valve plate are all set to be right angles.

Furthermore, the surfaces of the sealing surfaces of the flashboard, the fixed valve plate and the movable valve plate are sprayed with hard alloy materials by adopting spray welding.

Furthermore, a radiating fin is arranged on the outer side wall of the upper part of the valve cover.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

the middle valve seat of the utility model adopts a wide and long completely-jointed gate plate, so that the medium can be separated from entering the upper valve cavity and the lower valve cavity of the valve no matter the valve is opened or closed, a good sealing effect is achieved, the sealing surface abrasion compensation capacity is very large, the sealing performance of the valve is greatly improved, and the service life of the valve is prolonged;

the valve seat extends from the upper valve cavity to the lower valve cavity, so that the flashboard is ensured to be in contact with the valve seat and stressed uniformly in the opening or closing process, the first pre-tightening springs are arranged on the upper side and the lower side of the movable valve plate, the second pre-tightening springs are arranged in the middle of the movable valve plate, so that the movable valve plate is subjected to uniform pre-tightening force, the sealing surface of the flashboard is in close contact with the sealing surface of the valve seat, and the sealing effect is;

the corners of the sealing surfaces of the flashboard and the valve seat are processed into right angles, and various impurities attached to the sealing surfaces can be scraped under the action of the pre-tightening spring, so that hard and soft impurities in a pipeline can be cut off in the opening and closing process of the valve, the impurities are effectively prevented from being attached to the sealing surfaces, the leakage of the valve is prevented, the sealing surfaces are protected, and the service life of the valve is prolonged;

the utility model discloses it has the high rigidity carbide material to adopt the spray welding spraying on the sealed face surface of flashboard and disk seat, makes the sealed face of flashboard and disk seat have good wear-resisting, corrosion-resistant, anti-coking, heat-resisting and oxidation resistance to the life of valve has further been improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is a front view of the fixed valve plate of the present invention;

FIG. 5 is a left side view of the fixed valve plate of the present invention;

fig. 6 is a front view of the middle moving valve plate of the present invention;

fig. 7 is a right side view of the center movable valve plate of the present invention;

fig. 8 is a schematic structural view of the middle valve seat fixing frame of the present invention.

In the figure: 1. a valve base; 2. a valve body; 3. a valve cover; 4. a shutter plate; 5. a flow channel; 6. an upper valve cavity; 7. a lower valve cavity; 8. a fixed valve plate; 9. a movable valve plate; 10. a valve seat fixing frame; 11. mounting holes; 12. a first pre-tightening spring; 13. mounting grooves; 14. a connecting member; 15. a spring seat; 16. a second pre-tightening spring; 17. a valve seat gasket; 18. a flow guide hole; 19. and a heat sink.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-8, the embodiment of the wear-resistant shear valve of the present invention includes a valve base 1, a valve body 2, a valve cover 3 and a gate plate 4, wherein a flow channel 5 is disposed on the valve body 2, the valve cover 3 is fastened to the upper portion of the valve body 2 by bolts and nuts to form an upper valve cavity 6 communicated with the flow channel 5, the valve base 1 is fastened to the lower portion of the valve body 2 by bolts and nuts to form a lower valve cavity 7 communicated with the flow channel 5, the upper valve cavity 6 and the lower valve cavity 7 are disposed oppositely, valve seats matched with the gate plate 4 are disposed in the upper valve cavity 6 and the lower valve cavity 7, through holes corresponding to the flow channel 5 are disposed in the middle of the valve seats, the valve seats include a fixed valve plate 8 and a movable valve plate 9 disposed oppositely in parallel, valve seat fixing frames 10 are disposed in the upper valve cavity 6 and the lower valve cavity 7 respectively by screws, the valve seat fixing frame 10 is provided with a mounting hole 11 matched with the valve seat, the fixed valve plate 8 is fixedly connected with the valve seat fixing frame 10, and a first elastic pressure device is arranged between the movable valve plate 9 and the valve seat fixing frame 10. The first elastic pressure device comprises a first pre-tightening spring 12, a plurality of mounting grooves 13 are formed in one side, corresponding to the valve seat fixing frame 10, of the movable valve plate 9, the first pre-tightening spring 12 is arranged in the mounting grooves 13, a connecting piece 14 matched with the mounting grooves 13 is arranged on the valve seat fixing frame 10, the end portion of the connecting piece 14 is abutted to one end of the first pre-tightening spring 12, the connecting piece 14 can be made of a bolt, one end of the bolt is connected with the valve seat fixing frame 10, and the other end of the bolt is abutted to the first pre-tightening spring 12. The valve seat in the embodiment adopts the fixed valve plate on one side, the movable valve plate on the other side, the pretightening force is provided by the first pretightening spring arranged on one side of the movable valve plate, the valve seat and the flashboard can be effectively ensured to be tightly attached together at any time, and the sealing property of the valve is ensured.

Further, move the valve plate 9 with be provided with second elastic pressure device between the disk seat, second elastic pressure device includes two spring holders 15 that the opening set up relatively, two be provided with second pretension spring 16 between the spring holder 15, one the spring holder 15 with 2 butts of valve body, another the spring holder 15 with move the valve plate 9 butt, two the spring holder 15 outside is provided with the sealed 17 of disk seat of V type. A second elastic pressure device is arranged between the valve body and the movable valve plate, so that the movable valve plate is uniformly stressed integrally, and the valve seat and the flashboard are attached together at any time; the influence of the medium on the second pre-tightening spring can be effectively isolated by using the V-shaped valve seat sealing gasket 17, the effective work of the spring is ensured, and the service life of the valve is prolonged.

Furthermore, a diversion hole 18 matched with the flow channel 5 is formed in the gate plate 4, the gate plate 4 is matched with the fixed valve plate 8 and the movable valve plate 9 respectively to form a sealing pair, and a connecting channel of the flow channel 5 and the upper valve cavity 6 and the lower valve cavity 7 is sealed. The fixed valve plate and the movable valve plate of the valve are in a form of being completely attached to the gate plate in a wide and long mode, and the upper valve cavity and the lower valve cavity of the valve can be blocked from media entering no matter the valve is opened or closed.

Furthermore, the corners of the contact positions of the sealing surfaces of the flashboard 4 and the fixed valve plate 8 and the movable valve plate 9 are all set to be right angles. Can effectually strike off the filth on the sealed face and glue easily impurity such as thick glue thing of gluing on sealed face, the sealed face of protection reduces wearing and tearing, improves the sealing performance and the life of valve port.

Furthermore, the surfaces of the sealing surfaces of the flashboard 4, the fixed valve plate 8 and the movable valve plate 9 are sprayed with hard alloy materials by adopting spray welding, so that the sealing surfaces of the flashboard and the floating sealing plate have excellent wear resistance, corrosion resistance, coking resistance, heat resistance and oxidation resistance, and the service life of the valve is further prolonged.

Furthermore, the outer side wall of the upper part of the valve cover 3 is provided with a radiating fin 19, so that heat generated after the valve is opened and closed for many times can be conveniently radiated.

Further, the utility model discloses still include valve rod, support and drive arrangement, the support sets up in the valve gap top, drive arrangement sets up and the support top, the lower extreme of valve rod with the roof of flashboard is connected, the upper end of valve rod extends through last valve cavity the valve gap is connected with drive arrangement with the support is outer, drive arrangement can be for drive mode such as manual, electronic, gear, cylinder, and this is prior art, no longer gives unnecessary details.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. A wear-resistant shear valve comprises a valve base (1), a valve body (2), a valve cover (3) and a gate plate (4), wherein a flow channel (5) is formed in the valve body (2), the valve cover (3) is buckled on the upper portion of the valve body (2) to form an upper valve cavity (6) communicated with the flow channel (5), the valve base (1) is buckled on the lower portion of the valve body (2) to form a lower valve cavity (7) communicated with the flow channel (5), the upper valve cavity (6) and the lower valve cavity (7) are oppositely arranged, valve seats matched with the gate plate (4) are arranged in the upper valve cavity (6) and the lower valve cavity (7), through holes corresponding to the flow channel (5) are formed in the middle of the valve seats, the wear-resistant shear valve is characterized in that the valve seats comprise a fixed valve plate (8) and a movable valve plate (9) which are oppositely arranged in parallel, and valve seats (10) are respectively arranged in the upper valve cavity (, the valve seat fixing frame (10) is provided with a mounting hole (11) matched with the valve seat, the fixed valve plate (8) is fixedly connected with the valve seat fixing frame (10), and a first elastic pressure device is arranged between the movable valve plate (9) and the valve seat fixing frame (10).

2. The wear-resistant shear valve according to claim 1, wherein the first elastic pressure device comprises a first pre-tightening spring (12), a mounting groove (13) is formed in one side of the movable valve plate (9) corresponding to the valve seat fixing frame (10), the first pre-tightening spring (12) is arranged in the mounting groove (13), a connecting piece (14) matched with the mounting groove (13) is arranged on the valve seat fixing frame (10), and the end of the connecting piece (14) is abutted against one end of the first pre-tightening spring (12).

3. A wear-resistant shear valve as claimed in claim 1, characterized in that second elastic pressure means are provided between the dynamic valve plate (9) and the valve seat.

4. A wear-resistant shear valve according to claim 3, wherein the second elastic pressure means comprise two spring seats (15) with opposite openings, a second pre-tensioned spring (16) being arranged between the two spring seats (15), one spring seat (15) abutting the valve body (2) and the other spring seat (15) abutting the movable valve plate (9).

5. A wear-resistant shear valve as claimed in claim 4, characterized in that a seat gasket (17) is provided on the outside of both spring seats (15).

6. The wear-resistant shear valve of claim 1, wherein the gate plate (4) is provided with a diversion hole (18) matched with the flow passage (5), and the gate plate (4) is respectively matched with the fixed valve plate (8) and the movable valve plate (9) to form a sealing pair and close a connecting passage of the flow passage (5) with the upper valve cavity (6) and the lower valve cavity (7).

7. A wear resistant shear valve according to claim 6, wherein the corners of the contact between the sealing surfaces of the gate plate (4) and the stationary (8) and moving (9) valve plates are each arranged at right angles.

8. A wear resistant shear valve as claimed in claim 6, wherein the seal faces of the gate plate (4) and the stationary (8) and moving (9) valve plates are spray welded with cemented carbide material.

9. A wear resistant shear valve as claimed in claim 1, characterized in that the valve cover (3) is provided with fins (19) on its upper outer side wall.