CN216789279U

CN216789279U - Novel no water conservancy diversion single gate board fire prevention wafer valve

Info

Publication number: CN216789279U
Application number: CN202220494664.8U
Authority: CN
Inventors: 胡宝; 项启源
Original assignee: Zhejiang Zhanxude Automation Control Valve Co ltd
Current assignee: Zhejiang Zhanxude Automation Control Valve Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-06-21
Anticipated expiration: 2032-03-07

Abstract

The utility model discloses a novel non-diversion single-gate plate fireproof flat valve which comprises a valve body, wherein valve seats are arranged on two sides of the interior of the valve body, a valve plate is arranged between the two valve seats, a spring seat is arranged on the outer side of the valve seat, a valve seat fireproof ring is arranged between the valve seat and the spring seat, a spring is arranged between the spring seat and the inner wall of the valve body, a valve rod is arranged above the middle part of the valve plate, a valve cover is arranged at the top of the valve body, a support is arranged at the top of the valve cover, and a hand wheel is arranged at the top of the support. In this novel no water conservancy diversion single gate board fire prevention wafer valve, the disk seat, the 28 convex surface oblique angles of spring holder have produced certain extrusion force to the flame arrester because the deviation of angle in the assembling process to 30 oblique angles of disk seat flame arrester ring, all have the normal pressure that comes from valve medium effort and disk seat spring force and equals on every point of disk seat flame arrester ring V type featheredge, disk seat flame arrester ring V type featheredge and disk seat, the contact widen of spring holder V type convex surface, contact stress increases simultaneously to the realization is sealed.

Description

Novel no water conservancy diversion single gate board fire prevention wafer valve

Technical Field

The utility model relates to the technical field of valves, in particular to a novel non-diversion single-gate-plate fireproof flat valve.

Background

A flat gate valve is a sliding valve whose closing member is a parallel gate plate. The closing member can be a single gate plate or a double gate plate with a support mechanism between the single gate plate and the double gate plate, the pressing force of the gate plate to the valve seat is controlled by the medium pressure acting on the floating gate plate or the floating valve seat, but the fire release performance of the existing flat gate valve is poor, and when a fire occurs, the internal sealing member is deformed or loosened due to high temperature, so that the sealing effect of the valve is influenced, the fire accident is further expanded easily, and the safety of a pipeline is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel non-diversion single-gate plate fireproof flat valve to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides a novel non-diversion single-gate plate fireproof flat valve which comprises a valve body, wherein valve seats are arranged on two sides inside the valve body, a valve plate is arranged between the two valve seats, a spring seat is arranged on the outer side of the valve seat, a valve seat fireproof ring is arranged between the valve seat and the spring seat, a spring is arranged between the spring seat and the inner wall of the valve body, a valve rod is arranged above the middle part of the valve plate, a valve cover is arranged on the top of the valve body, a support is arranged on the top of the valve cover, a hand wheel is arranged on the top of the support, a protective cover is arranged on the top of the hand wheel, a connecting sleeve is arranged on the outer side of the bottom of the protective cover, the middle part of the hand wheel is connected with the valve rod through a valve rod nut, and two surfaces, in contact with the valve seat and the spring seat, of the valve seat fireproof ring, adopt V-shaped surface sealing grooves with an oblique angle of 30 degrees, and the valve seat and the spring seat are both designed with V-shaped convex surfaces with 28-degree oblique angles matched with the fire collar of the valve seat.

Preferably, a valve seat sealing ring is embedded inside the valve seat.

Preferably, a cylindrical pin is installed on the outer side of the middle part of the valve body.

Preferably, the valve cover is connected with the valve body through a first stud bolt and a first nut, and the support is connected with the valve cover through a second stud bolt and a second nut.

Preferably, a middle flange gasket is arranged between the valve cover and the top of the valve body.

Preferably, a pressure relief valve is installed on the outer side of the top of the valve cover.

Preferably, the packing is arranged on the inner side of the top of the valve cover, the gland is arranged on the top of the packing, and the gland is connected with the valve cover through a third nut and a third stud bolt.

Preferably, the inner side of the top of the support is rotatably connected with the valve rod nut through a plane bearing, a bearing gland is installed at the top of the plane bearing, and an oil cup is installed on the outer side of the plane bearing.

Preferably, a positioning block is installed at the bottom of the valve body, a positioning seat is fixed on the positioning block through a hexagon socket head cap screw, and a plug screw is installed on one side of the bottom of the valve body.

Compared with the prior art, the utility model has the beneficial effects that:

in this novel no water conservancy diversion single gate board fire prevention wafer valve, the disk seat, 28 convex surface oblique angles of spring holder have produced certain extrusion force to the flame arrester because the deviation of angle in the assembling process to 30 oblique angles of disk seat flame arrester ring, under the thrust effect that receives disk seat and spring holder when the disk seat flame arrester ring, all there is the normal pressure that comes from valve medium effort and disk seat spring force and equals on each point of disk seat flame arrester ring V type featheredge, disk seat flame arrester ring V type featheredge and disk seat, spring holder V type convex surface contact widen, contact stress increases simultaneously, thereby realize sealedly, the disk seat flame arrester ring, the design of spring holder three-section, and the cost is reduced, simple assembly and maintenance.

Drawings

FIG. 1 is a schematic front half-section view of the present invention;

FIG. 2 is an enlarged partial view of the area A of FIG. 1 according to the present invention;

FIG. 3 is an enlarged partial view of the utility model at B of FIG. 1;

FIG. 4 is a schematic side view of a half-section configuration of the present invention.

The various reference numbers in the figures mean:

1. a valve body; 2. a valve plate; 3. a valve seat; 4. a spring seat; 5. a valve seat sealing ring; 6. a valve seat fire collar; 7. a cylindrical pin; 8. a valve stem; 9. a first stud bolt; 10. a first nut; 11. a middle flange gasket; 12. a valve cover; 13. a pressure relief valve; 14. a filler; 15. a gland; 16. a second stud bolt; 17. a second nut; 18. a third nut; 19. a third stud bolt; 20. a support; 21. a hand wheel; 22. connecting sleeves; 23. a protective cover; 24. a valve stem nut; 25. a bearing gland; 26. an oil cup; 27. a flat bearing; 28. a spring; 29. a socket head cap screw; 30. a locator; 31. positioning blocks; 32. And (4) a screw plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the definitions of "first", "second" and "third" features may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example 1

The utility model provides a novel non-diversion single-gate plate fireproof flat valve, which comprises a valve body 1, wherein valve seats 3 are arranged on two sides inside the valve body 1, a valve plate 2 is arranged between the two valve seats 3, a spring seat 4 is arranged on the outer side of the valve seat 3, a valve seat fireproof ring 6 is arranged between the valve seat 3 and the spring seat 4 to play a good fire-releasing sealing effect, a spring 28 is arranged between the spring seat 4 and the inner wall of the valve body 1 to provide elastic force so as to keep the valve seat 3 and the spring seat 4 tight, a valve rod 8 is arranged above the middle part of the valve plate 2, a valve cover 12 is arranged on the top of the valve body 1, a support 20 is arranged on the top of the valve cover 12, a hand wheel 21 is arranged on the top of the support 20, the valve rod 8 can be driven to rotate by the rotation of the hand wheel 21, a threaded hole is formed in the valve plate 2, the valve rod 8 is in threaded connection with the valve plate 2, and the lifting of the valve plate 2 can be realized by the rotation of the valve rod 8, a protective cover 23 is installed at the top of the hand wheel 21, a connecting sleeve 22 is installed on the outer side of the bottom of the protective cover 23, the middle of the hand wheel 21 is connected with a valve rod 8 through a valve rod nut 24, two surfaces, in contact with the valve seat fire-proof ring 6, the valve seat 3 and the spring seat 4 are both provided with V-shaped surface sealing grooves with 30-degree oblique angles, V-shaped convex surfaces with 28-degree oblique angles matched with the valve seat fire-proof ring 6 are designed on the valve seat 3 and the spring seat 4, a certain extrusion force is generated on the valve seat fire-proof ring 6 due to the angle deviation in the assembling process of the 28-degree convex surface oblique angles of the valve seat 3 and the spring seat 4 to the 30-degree oblique angles of the valve seat fire-proof ring 6, and the valve seat fire-proof ring 6V-shaped thin edge and the valve seat 3 have normal pressure equal to the valve medium acting force and the spring force under the thrust action of the valve seat 3 and the spring seat 4, and the valve seat fire-proof ring 6V-shaped thin edge and the valve seat 3, The contact width of the V-shaped convex surface of the spring seat 4 is widened, and simultaneously, the contact stress is increased, so that sealing is realized.

In this embodiment, a valve seat seal ring 5 is embedded inside the valve seat 3 to maintain the seal between the valve seat 3 and the valve plate 2.

Specifically, cylindric lock 7 is installed in the middle part outside of valve body 1, and cylindric lock 7 inserts the outer wall socket of valve rod 8, can realize valve rod 8's fixed promptly.

It is worth to be noted that the valve seat fire-proof ring 6 is manufactured by winding 304+ flexible graphite materials, so that the toughness and strength of the valve seat fire-proof ring 6 meet the requirements of a valve.

Further, the valve cover 12 is connected with the valve body 1 through the first stud 9 and the first nut 10, so that the valve cover 12 and the valve body 1 can be conveniently mounted and dismounted, and the support 20 is connected with the valve cover 12 through the second stud 16 and the second nut 17, so that the support 20 and the valve cover 12 can be conveniently mounted and dismounted.

Furthermore, a middle flange gasket 11 is arranged between the valve cover 12 and the top of the valve body 1, so that the inner side of the joint of the valve cover 12 and the valve body 1 is guaranteed to be cushioned, and the sealing performance is guaranteed.

Further, a pressure relief valve 13 is installed on the outer side of the top of the cover 12 for pressure relief.

Example 2

In order to further ensure the sealing of the top of the valve cap 12, on the basis of embodiment 1, the packing 14 is arranged on the inner side of the top of the valve cap 12, the gland 15 is arranged on the top of the packing 14, and the gland 15 and the valve cap 12 are connected through the third nut 18 and the third stud 19, so as to ensure the effective sealing of the top of the valve cap 12.

Further, the top inner side of the bracket 20 is rotatably connected with the valve rod nut 24 through a plane bearing 27, a bearing gland 25 is installed at the top of the plane bearing 27, and an oil cup 26 is installed at the outer side of the plane bearing 27 for ensuring.

Furthermore, a positioning block 31 is installed at the bottom of the valve body 1, a positioning seat 30 is fixed on the positioning block 31 through a hexagon socket head cap screw 29, and a plug screw 32 is installed at one side of the bottom of the valve body 1.

When the novel non-diversion single-flashboard fireproof flat valve is used, firstly, the valve seat 3 is pushed by the force of a medium acting on the flashboard 2 of the fireproof flat valve, the valve seat fireproof ring 6 generates extrusion expansion under the thrust of the flashboard 2 and the force of the spring 28 behind to realize sealing, the sealing of the valve seat 3 is combined by soft and hard sealing, the soft sealing ring (the valve seat sealing ring 5) adopts RPTFE, the hard sealing ring of the valve seat 3 adopts overlay welding stellite alloy, the soft sealing is 0.5 mm higher than the hard sealing, the valve seat sealing ring 5 is tightly attached to the flashboard 2 to form sealing under normal working conditions, when the temperature of the valve is sharply increased due to fire accidents, the valve seat sealing ring 5 is damaged, under the action of medium force and the pre-tightening force of the spring 28, the flashboard 2 is contacted with the hard sealing ring to form sealing again, therefore, the sealing effect of the valve cannot be influenced by high temperature, the further expansion of fire accidents is avoided, and the safety of pipelines is ensured.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a novel no water conservancy diversion single gate board fire prevention wafer valve, includes valve body (1), its characterized in that: the improved valve is characterized in that valve seats (3) are installed on two sides of the inside of the valve body (1), a valve plate (2) is installed between the two valve seats (3), a spring seat (4) is installed on the outer side of the valve seat (3), a valve seat fire ring (6) is installed between the valve seat (3) and the spring seat (4), a spring (28) is installed between the spring seat (4) and the inner wall of the valve body (1), a valve rod (8) is installed above the middle of the valve plate (2), a valve cover (12) is installed at the top of the valve body (1), a support (20) is installed at the top of the valve cover (12), a hand wheel (21) is installed at the top of the support (20), a protective cover (23) is installed at the top of the hand wheel (21), a connecting sleeve (22) is installed on the outer side of the bottom of the protective cover (23), and the middle of the hand wheel (21) is connected with the valve rod (8) through a valve rod nut (24), two faces of valve seat fire collar (6) and valve seat (3), spring holder (4) contact all adopt to be the sealed recess of V profile at 30 oblique angles, valve seat (3), spring holder (4) all design have the V type convex surface at 28 oblique angles that match with valve seat fire collar (6).

2. The novel no water conservancy diversion single gate board fire prevention wafer valve of claim 1 characterized in that: and a valve seat sealing ring (5) is embedded in the inner side of the valve seat (3).

3. The novel no water conservancy diversion single gate board fire prevention wafer valve of claim 1 characterized in that: and a cylindrical pin (7) is arranged on the outer side of the middle part of the valve body (1).

4. The novel no water conservancy diversion single gate board fire prevention wafer valve of claim 1 characterized in that: the valve cover (12) is connected with the valve body (1) through a first stud (9) and a first nut (10), and the support (20) is connected with the valve cover (12) through a second stud (16) and a second nut (17).

5. The novel no water conservancy diversion single gate board fire prevention wafer valve of claim 1 characterized in that: a middle flange gasket (11) is arranged between the valve cover (12) and the top of the valve body (1).

6. The novel no water conservancy diversion single gate board fire prevention wafer valve of claim 1 characterized in that: and a pressure release valve (13) is arranged on the outer side of the top of the valve cover (12).

7. The novel no water conservancy diversion single gate board fire prevention wafer valve of claim 1 characterized in that: the packing (14) is arranged on the inner side of the top of the valve cover (12), the gland (15) is arranged on the top of the packing (14), and the gland (15) is connected with the valve cover (12) through a third nut (18) and a third stud bolt (19).

8. The novel no water conservancy diversion single gate board fire prevention wafer valve of claim 1 characterized in that: the inner side of the top of the support (20) is rotatably connected with the valve rod nut (24) through a plane bearing (27), a bearing gland (25) is installed at the top of the plane bearing (27), and an oil cup (26) is installed on the outer side of the plane bearing (27).

9. The novel no water conservancy diversion single gate board fire prevention wafer valve of claim 1 characterized in that: the bottom of valve body (1) is installed locating piece (31), be fixed with positioning seat (30) through allen key (29) on locating piece (31), plug screw (32) are installed to bottom one side of valve body (1).