CN211693591U

CN211693591U - Novel double-gate high-temperature gate valve

Info

Publication number: CN211693591U
Application number: CN201922154082.6U
Authority: CN
Inventors: 方高远; 王英才; 伏道元
Original assignee: Fangzheng Valve Group Shanghai Co ltd
Current assignee: Fangzheng Valve Group Shanghai Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-10-16
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a novel double-gate board high temperature gate valve, including lower cover, spring one, bolt one, nut one, seal gasket, sealed packing, valve drive arrangement, pilot rod, binder, holding screw, spring two, outer righting mechanism, interior righting mechanism, spring clamp plate, gyro wheel mechanism, fixed bucket, draft tube two and metal seal circle, the top of lower cover is connected with the valve body, interior righting mechanism sets up the both sides at the valve rod, spring clamp plate sets up the upper end at the spring, gyro wheel mechanism sets up the inside at the flashboard frame, metal seal circle sets up at the inside lower extreme of sealed packing. The sealing gasket between the valve body and the upper cover of the novel double-gate high-temperature gate valve has certain interference magnitude at the matching position of the sealing element when the pressure self-tightening sealing ring is assembled, low-pressure sealing is established by utilizing the metal interference magnitude, and fluid in the valve acts on an inner hole of the pressure self-tightening sealing ring during high pressure, so that the sealing ring is expanded and deformed outwards to form reliable high-pressure sealing.

Description

Novel double-gate high-temperature gate valve

Technical Field

The utility model relates to a gate valve technical field specifically is a novel double-gate board high temperature gate valve.

Background

The valve plate structure forms of the high-temperature and high-pressure valve commonly used at present mainly comprise a wedge type structure and a split type structure, the valve is suitable for complex working conditions of high temperature, high pressure, hard particles and the like, and the structural design and the like are changed in a great number.

In the combined gate plate high-temperature gate valve with the application number of '201010228357.7', but the sealing member of the combined gate plate high-temperature gate valve is high-temperature resistant and short in service life when in use, so that the technology capable of improving the structure of the high-temperature gate valve is urgently needed in the market to perfect the equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel double-gate board high temperature gate valve to solve the sealing device of this type on the present market that above-mentioned background art provided and valve rod and valve gap packing box, valve body and the valve gap seal life are not long when using, and then lead to the problem of gate valve leakage.

In order to achieve the above object, the utility model provides a following technical scheme: a novel double-gate-plate high-temperature gate valve comprises a lower cover, a first spring, a first bolt, a first nut, a sealing gasket, a sealing packing, a valve driving device, an indicating rod, a combiner, a set screw, a spring, an outer centering mechanism, an inner centering mechanism, a spring pressing plate, a roller mechanism, a fixed barrel, a second guide cylinder and a metal sealing ring, wherein a valve body is connected above the lower cover, a guide plate is arranged inside the valve body, a first guide cylinder is arranged at the upper end of the guide plate, an elastic fixing mechanism is arranged above the first guide cylinder, an outer gate plate is arranged above the elastic fixing mechanism, an inner gate plate is arranged inside the outer gate plate, a steel ball is arranged on the inner gate plate, a valve seat is arranged at the upper end of the outer gate plate, a gate plate frame is arranged on the valve seat, an outer gate plate frame is connected on the gate plate, and the lower end of, the valve comprises a spring I, a valve body, a sealing gasket, a valve driving device, an indicating rod, a combiner, a sealing sleeve, a sealing gasket, a screw rod, a spring II, a nut II, an outer centralizing mechanism and a sealing gasket, wherein the valve body is connected with an upper cover through a bolt I and a nut I, the sealing gasket is arranged between the valve body and the upper cover, the sealing gasket is arranged at the upper end of the upper cover, the upper end of the sealing gasket is provided with a gasket pressing sleeve, a gasket pressing plate is arranged above the gasket pressing sleeve, the outer side of the gasket pressing plate is provided with a support, the support is provided with a bolt II and a nut II, the valve driving device is arranged at the upper end of the support, the indicating rod is arranged above the valve driving device, the combiner is fixed on the valve rod through a set screw, the guide cylinder II is arranged at one side of the guide cylinder I, the, the inner centralizing mechanism is arranged on two sides of the valve rod, the spring pressing plate is arranged at the upper end of the first spring, the roller mechanism is arranged inside the flashboard frame, and the metal sealing ring is arranged at the lower end inside the sealing packing.

Preferably, the sealing gasket between the valve body and the upper cover is a pressure self-tightening sealing ring.

Preferably, the bottom end of the sealing packing is provided with a metal sealing ring, the metal sealing ring is a metal self-tightening sealing ring, and the cross section of the metal self-tightening sealing ring is of a C shape.

Preferably, the material of the pressure self-tightening sealing ring is low-strength high-temperature-resistant alloy.

Compared with the prior art, the beneficial effects of the utility model are that: this novel double-gate board high temperature gate valve:

in the device, a sealing gasket between a valve body and an upper cover has certain interference at the matching position of a sealing element when the pressure self-tightening sealing ring is assembled, low-pressure sealing is established, fluid in the valve acts on an inner hole of the pressure self-tightening sealing ring during high pressure to enable the sealing ring to expand and deform outwards to form reliable high-pressure sealing, a metal sealing ring is arranged at the bottom end of a sealing packing, the metal sealing ring is a metal self-tightening sealing ring, the cross section of the metal self-tightening sealing ring is C-shaped and is a hollow pipe, so that fluid in the valve can enter the valve conveniently, the sealing ring deforms to form reliable high-pressure sealing with a valve rod and a packing box, and the pressure self-tightening sealing ring is made of low-strength high-temperature-resistant alloy and aims to deform under the.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the part A structure of the present invention;

fig. 3 is an enlarged structure diagram of the part B structure of the present invention.

In the figure: 1. a lower cover; 2. a guide plate; 3. a valve body; 4. a first guide cylinder; 5. an elastic fixing mechanism; 6. An outer gate plate; 7. a steel ball; 8. an inner gate plate; 9. a valve seat; 10. a gate plate frame; 11. a first spring; 12. a valve stem; 13. a first bolt; 14. a first nut; 15. sealing gaskets; 16. an upper cover; 17. sealing the packing; 18. Packing pressing sleeve; 19. a packing press plate; 20. a support; 21. a second bolt; 22. a second nut; 23. a valve drive device; 24. an indication lever; 25. a binder; 26. tightening the screw; 27. a second spring; 28. an outer righting mechanism; 29. an internal centralizing mechanism; 30. a spring pressing plate; 31. a roller mechanism; 32. fixing the barrel; 33. A second guide cylinder; 34. a metal seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a novel double-gate high-temperature gate valve comprises a lower cover 1, a guide plate 2, a valve body 3, a guide cylinder I4, an elastic fixing mechanism 5, an outer gate plate 6, a steel ball 7, an inner gate plate 8, a valve seat 9, a gate plate frame 10, a spring I11, a valve rod 12, a bolt I13, a nut I14, a sealing gasket 15, an upper cover 16, a sealing packing 17, a packing pressing sleeve 18, a packing pressing plate 19, a support 20, a bolt II 21, a nut II 22, a valve driving device 23, an indicating rod 24, a combiner 25, a set screw 26, a spring II 27, an outer righting mechanism 28, an inner righting mechanism 29, a spring pressing plate 30, a roller mechanism 31, a fixing barrel 32, a guide cylinder II 33 and a metal sealing ring 34, wherein the valve body 3 is connected above the lower cover 1, the sealing gasket 15 between the valve body 3 and the upper cover 16 is a pressure self-tightening sealing ring, and the matching position of the sealing element has a, establish low pressure and seal, during high pressure, the interior fluid action of valve is in the self-tightening sealing ring hole of pressure, makes the sealing ring outwards inflation deformation, forms reliable high-pressure seal, the material of pressure self-tightening sealing ring be low strength high temperature resistant alloy, can warp under the high-pressure fluid effect in the valve, does benefit to sealedly, the inside of valve body 3 is provided with deflector 2, the upper end of deflector 2 is provided with draft tube 4, the top of draft tube 4 is provided with elastic fixing mechanism 5, the top of elastic fixing mechanism 5 is provided with outer flashboard 6, the inside of outer flashboard 6 is provided with interior flashboard 8, be provided with steel ball 7 on the interior flashboard 8, the upper end of outer flashboard 6 is provided with valve seat 9, be provided with flashboard frame 10 on the valve seat 9, be connected with outer flashboard 6 on flashboard frame 10, the lower extreme of spring 11 is fixed on flashboard frame 10, the valve rod 12 is arranged inside the spring I11, the valve body 3 is connected with the upper cover 16 through a bolt I13 and a nut I14, the sealing gasket 15 is arranged between the valve body 3 and the upper cover 16, the sealing packing 17 is arranged at the upper end of the upper cover 16, the packing pressing sleeve 18 is arranged at the upper end of the sealing packing 17, the bottom end of the sealing packing 17 is provided with a metal sealing ring 34, the metal sealing ring 34 is a metal self-tightening sealing ring, the cross section of the metal self-tightening sealing ring is C-shaped, so that fluid in the valve can conveniently enter, the sealing ring deforms, reliable high-pressure sealing is formed between the metal self-tightening sealing ring and the valve rod 12 and a packing box, the packing pressing sleeve 18 is provided with a packing pressing plate 19 above, the outer side of the packing pressing plate 19 is provided with a support 20, the support 20 is provided with a bolt II 21 and a nut II, the indicating rod 24 is arranged above the valve driving device 23, the combined part 25 is fixed on the valve rod 12 through a set screw 26, the first guide cylinder 33 is arranged on one side of the first guide cylinder 4, the fixing barrel 32 is arranged outside the first guide cylinder 4 and the second guide cylinder 33, the second spring 27 is arranged between the first guide cylinder 4 and the second guide cylinder 33, the outer righting mechanism 28 is arranged inside the upper cover 16, the inner righting mechanism 29 is arranged on two sides of the valve rod 12, the spring pressing plate 30 is arranged at the upper end of the first spring 11, the roller mechanism 31 is arranged inside the flashboard frame 10, and the metal sealing ring 34 is arranged at the lower end inside the sealing packing 17.

The working principle is as follows: when the novel double-gate high-temperature gate valve is used, firstly, a user needs to simply know the novel double-gate high-temperature gate valve, the user places the device at a specified position, the lower end of the valve rod 12 is designed with male threads which are matched with vertical and axial female threads on a connector 25 and then fixed by a set screw 26 to prevent rotation, the other end of the valve rod 12 is connected with a valve driving device 23, a hand wheel on the valve driving device 23 is rotated to enable the valve rod 12 to move up and down, the valve rod 12 drives a combined gate plate to move up and down, when a guide cylinder on the combined gate plate is overlapped with the two flange axes of the valve body 3, the valve is in an open state, when the axial line of an outer gate plate 6 on the combined gate plate is overlapped with the two flange axes of the valve body 3, the valve is in a closed state, a sealing gasket 15 between the valve body 3 and an upper cover 16 is a pressure, the contents which are not described in detail in this specification belong to the prior art which is well known to those skilled in the art, and the contents are not described in detail in the present specification.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a novel double-gate board high temperature gate valve, includes lower cover (1), spring (11), bolt (13), nut (14), seal gasket (15), sealed packing (17), valve drive arrangement (23), indicator lever (24), binder (25), holding screw (26), spring two (27), outer righting mechanism (28), interior righting mechanism (29), spring pressing plate (30), roller mechanism (31), fixed bucket (32), draft tube two (33) and metal seal circle (34), its characterized in that: the upper portion of the lower cover (1) is connected with a valve body (3), a guide plate (2) is arranged inside the valve body (3), a first guide cylinder (4) is arranged at the upper end of the guide plate (2), an elastic fixing mechanism (5) is arranged above the first guide cylinder (4), an outer flashboard (6) is arranged above the elastic fixing mechanism (5), an inner flashboard (8) is arranged inside the outer flashboard (6), a steel ball (7) is arranged on the inner flashboard (8), a valve seat (9) is arranged at the upper end of the outer flashboard (6), a flashboard frame (10) is arranged on the valve seat (9), an outer flashboard (6) is connected onto the flashboard frame (10), the lower end of a first spring (11) is fixed onto the flashboard frame (10), a valve rod (12) is arranged inside the first spring (11), the valve body (3) is connected with an upper cover (16) through a first bolt (13) and a first nut (14), the sealing gasket (15) is arranged between the valve body (3) and the upper cover (16), the sealing packing (17) is arranged at the upper end of the upper cover (16), the upper end of the sealing packing (17) is provided with a packing pressing sleeve (18), a packing pressing plate (19) is arranged above the packing pressing sleeve (18), a support (20) is arranged outside the packing pressing plate (19), a second bolt (21) and a second nut (22) are arranged on the support (20), the valve driving device (23) is arranged at the upper end of the support (20), the indicating rod (24) is arranged above the valve driving device (23), the combiner (25) is fixed on the valve rod (12) through a set screw (26), the second guide cylinder (33) is arranged at one side of the first guide cylinder (4), and the fixing barrel (32) is arranged outside the first guide cylinder (4) and the second guide cylinder (33), spring two (27) set up between draft tube (4) and draft tube two (33), outer mechanism (28) of righting sets up the inside in upper cover (16), interior mechanism (29) of righting sets up the both sides in valve rod (12), spring plate (30) set up the upper end in spring (11), roller mechanism (31) set up the inside at flashboard frame (10), metal seal circle (34) set up at the inside lower extreme of sealed packing (17).

2. The novel double-gate high-temperature gate valve according to claim 1, characterized in that: and a sealing gasket (15) between the valve body (3) and the upper cover (16) is a pressure self-tightening sealing ring.

3. The novel double-gate high-temperature gate valve according to claim 1, characterized in that: the bottom of sealed packing (17) is provided with metal sealing washer (34), metal sealing washer (34) are metal self-tightening sealing ring, and the cross-section of metal self-tightening sealing ring is "C" type.

4. The novel double-gate high-temperature gate valve according to claim 2, characterized in that: the pressure self-tightening sealing ring is made of low-strength high-temperature-resistant alloy.