CN214197343U

CN214197343U - High-pressure bellows gate valve with heat preservation jacket

Info

Publication number: CN214197343U
Application number: CN202120002235.XU
Authority: CN
Inventors: 潘秀腾; 章庆湖
Original assignee: Zhejiang Zhejiang East Valve Ltd By Share Ltd
Current assignee: Zhejiang Zhejiang East Valve Ltd By Share Ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-09-14
Anticipated expiration: 2031-01-04

Abstract

The utility model discloses a high-pressure bellows gate valve with heat preservation presss from both sides cover relates to valve equipment technical field, and the metallic bellow to current most high-pressure bellows gate valve can appear corroding fracture, fatigue fracture's the condition, and the sealing performance of most bellows gate valve is not good enough moreover, and the not good problem of heat insulating ability now provides following scheme, including the rose box, rose box fixed mounting is in the mounting platform top, the fixed feed inlet of having seted up in top of rose box, and the inside fixed mounting of rose box has two biography flitchs, fixed mounting has the backup pad on the below both sides inner wall of biography flitch, and fixed mounting has the spring between two corresponding backup pads. The utility model is simple in operation, convenient to use not only make the leakproofness of bellows gate valve better, form and chop into the leakproofness protection, the heat insulating ability of bellows gate valve is better moreover, avoids the great production crystallization phenomenon of the difference in temperature, prolongs the life of gate valve.

Description

High-pressure bellows gate valve with heat preservation jacket

Technical Field

The utility model relates to a valve equipment technical field especially relates to high-pressure bellows gate valve with heat preservation clamp cover.

Background

With the development of science and technology, the requirements of various industries on valves are higher and higher, such as corrugated pipe valves made of high-temperature, high-pressure and corrosion-resistant alloy are infinite, the structural design is continuously improved while the material selection is improved, the high-reliability design is realized, once toxic and harmful medium valves, nuclear medium valves and the like on some special occasions have great leakage hazards, the sealing difficulty of the valves is mainly the sealing structure of the valve rod, and the valves need to be opened and closed frequently.

However, in the prior art, the metal bellows of most high-pressure bellows gate valves can be corroded and broken, and the fatigue fracture is caused, or emergencies (overpressure, overtemperature and the like) occur, the bellows can fail to leak, the medium leakage cannot be prevented, the danger occurs, the sealing performance of most bellows gate valves is not good enough, the heat preservation performance is not good enough, when meeting the medium with the large temperature difference, the heat dissipation performance of the metal gate valve is good, the temperature difference is large, the crystallization phenomenon can be generated, the service life of the gate valve is influenced, and the high-pressure bellows gate valve with the heat preservation jacket is designed for the purpose.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-pressure bellows gate valve with heat preservation clamp cover has solved the metal bellows of the high-pressure bellows gate valve of present majority and can appear the condition of corrosion fracture, fatigue fracture, and the leakproofness of the bellows gate valve of most is not good enough moreover, the not good enough problem of heat insulating ability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

high-pressure bellows gate valve with heat preservation presss from both sides cover, including the valve body, the inside middle part of valve body is fixed with two symmetrical sealed pads, and the upper end rigid coupling of valve body has first connecting piece, is connected with the second connecting piece on the first connecting piece, is connected through fastening bolt between first connecting piece and the second connecting piece, and the sliding hole has been seted up to the upper end of second connecting piece, and sliding connection has first valve rod in the sliding hole, the lower extreme rigid coupling of first valve rod has the valve plate, and the valve plate seals up relative side sliding connection with two sealed pads, and the outside cover of first valve rod is equipped with first bellows, and the upper end of first bellows welds with the interior top surface of second connecting piece mutually, and the lower extreme of first bellows welds with the up end of valve plate mutually, and the upper end of first valve rod passes the sliding hole and rotates and is connected with the connecting rod.

Preferably, the upper end rigid coupling of connecting rod has the fixed plate, and the upper end rigid coupling of fixed plate has the second valve rod, and the upper end rigid coupling of second connecting piece has the valve gap, and the outside cover of second valve rod is equipped with the second bellows.

Preferably, the upper end of the second corrugated pipe is fixedly connected with the valve cover, the lower end of the second corrugated pipe is fixedly connected with the fixing plate, and the upper end of the valve cover is provided with the stuffing box.

Preferably, the stuffing box and the upper end are provided with a stuffing cover plate, stuffing is placed between the stuffing cover plate and the stuffing box, and the stuffing box and the stuffing cover plate are connected through bolts.

Preferably, the upper end of the stuffing box is fixedly connected with a fixing frame, the upper end of the fixing frame is rotatably connected with a hand wheel, the lower end of the hand wheel penetrates through the upper end face of the fixing frame and is fixedly connected with a screw rod, a threaded hole is formed in the second valve rod, and the screw rod is in threaded sleeve connection with the second valve rod.

Preferably, the outer surface of the valve body is sleeved with a layer of heat-insulating laminate, and the outer side of the first connecting piece, the outer side of the second connecting piece and the outer wall of the valve cover are all sleeved with the same heat-insulating jacket.

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

1. the utility model discloses in rotate the hand wheel, the lead screw rotates, under the cooperation of screw hole, the second valve rod moves down, drives the extension of second bellows, and simultaneously, the fixed plate promotes the connecting rod and moves down, makes first valve rod move down, and first bellows extension, valve plate move down and tightly laminate and two seal between the pad, can carry out the operation of ending like this.

2. The utility model discloses a continuous extension of first bellows and shrink have increased the leakproofness of gate valve to prevent that technology fluid from etching the valve rod.

3. The utility model discloses in, if first bellows became invalid, the medium passed first bellows and got into the inside messenger of valve gap, carries out the secondary protection to the gate valve in the second bellows, and the filler on the stuffing box also can avoid leaking simultaneously.

4. The utility model discloses in, the setting that heat preservation plywood and heat preservation on the gate valve pressed from both sides the cover can keep warm to the gate valve body after making outside medium flow in it, has avoided the too big produced crystallization phenomenon of medium and gate valve difference in temperature, prolongs the life of gate valve body.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of a cross-sectional structure of the middle screw rod of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A of the present invention;

fig. 4 is an enlarged schematic structural diagram of the position B in the present invention.

Reference numbers in the figures: 1. a valve body; 2. a gasket; 3. a first connecting member; 4. a second connecting member; 5. a first valve stem; 6. a valve plate; 7. a first bellows; 8. a connecting rod; 9. a fixing plate; 10. a second valve stem; 11. a valve cover; 12. a second bellows; 13. a stuffing box; 14. a filler cover plate; 15. a filler; 16. a fixed mount; 17. a hand wheel; 18. a screw rod; 19. a threaded hole; 20. a heat preservation laminate; 21. and a heat-preserving jacket.

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.

Referring to fig. 1-4, the high pressure bellows gate valve with heat preservation jacket comprises a valve body 1, two symmetrical sealing gaskets 2 are fixed in the middle of the valve body 1, and the upper end of the valve body 1 is fixedly connected with a first connecting piece 3, the first connecting piece 3 is connected with a second connecting piece 4, the first connecting piece 3 is connected with the second connecting piece 4 through a fastening bolt, the upper end of the second connecting piece 4 is provided with a sliding hole, a first valve rod 5 is connected in the sliding hole in a sliding way, the lower end of the first valve rod 5 is fixedly connected with a valve plate 6, and valve plate 6 and two sealed relative side sliding connection of 2 that fill up, the outside cover of first valve rod 5 is equipped with first bellows 7, and the upper end of first bellows 7 welds with the interior top surface of second connecting piece 4 mutually, and the lower extreme of first bellows 7 welds with the up end of valve plate 6 mutually, and the upper end of first valve rod 5 passes the slide opening and is connected with connecting rod 8 in the rotation.

The upper end rigid coupling of connecting rod 8 has fixed plate 9, and the upper end rigid coupling of fixed plate 9 has second valve rod 10, and the upper end rigid coupling of second connecting piece 4 has valve gap 11, and the outside cover of second valve rod 10 is equipped with second bellows 12, if first bellows 7 became invalid, the medium passed first bellows 7 and gets into the inside messenger of valve gap 11, carries out the secondary protection to the gate valve in the second bellows 12.

The upper end and the valve gap 11 looks rigid coupling of second bellows 12, the lower extreme and the fixed plate 9 looks rigid coupling of second bellows 12, packing box 13 is installed to the upper end of valve gap 11, packing apron 14 is installed to packing box 13 and upper end, packing 15 has been placed between packing apron 14 and the packing box 13, be connected through the bolt between packing box 13 and the packing apron 14, the upper end rigid coupling of packing box 13 has mount 16, and the upper end of mount 16 is rotated and is connected with hand wheel 17, the lower extreme of hand wheel 17 passes the up end and the rigid coupling of mount 16 and has lead screw 18, threaded hole 19 has been seted up to the inside of second valve stem 10, and lead screw 18 and second valve stem 10 thread bush, packing 15 on the packing box 13 can avoid leaking.

The surface of valve body 1 has cup jointed one deck heat preservation plywood 20, and has all cup jointed same heat preservation cover 21 on the outside of first connecting piece 3, the outside of second connecting piece 4, the outer wall of valve gap 11, and the setting that heat preservation plywood 20 and heat preservation cover 21 on the gate valve can make outside medium flow in it after can keep warm to the gate valve body, has avoided the too big produced crystallization phenomenon of medium and gate valve difference in temperature.

The working principle is as follows: when the valve is used, when cutoff is needed, the hand wheel 17 is rotated, the screw rod 18 rotates, the second valve rod 10 moves downwards under the matching of the threaded hole 19 to drive the second corrugated pipe 12 to extend, meanwhile, the fixing plate 9 pushes the connecting rod 8 to move downwards to enable the first valve rod 5 to move downwards, the first corrugated pipe 7 extends, the valve plate 6 moves downwards and is tightly attached between the two sealing gaskets 2, so that cutoff operation can be carried out, in the process of opening and closing operation, the first corrugated pipe 7 continuously extends and contracts to increase the sealing performance of the gate valve so as to prevent the erosion of process fluid on the valve rod, and a double sealing design is adopted, if the first corrugated pipe 7 fails, a medium passes through the first corrugated pipe 7 to enter the valve cover 11 to be used, secondary protection is carried out on the gate valve in the second corrugated pipe 12, meanwhile, the filler 15 on the filler box 13 can also avoid leakage, and the arrangement of a heat-preserving laminate 20 and a heat-preserving jacket 21 on the gate valve, can make outside medium flow in it after can keep warm to the gate valve body, avoid medium and the too big produced crystallization phenomenon of gate valve difference in temperature, prolong the life of gate valve body.

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 or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A high-pressure corrugated pipe gate valve with a heat-insulation jacket comprises a valve body (1) and is characterized in that two symmetrical sealing gaskets (2) are fixed in the middle of the interior of the valve body (1), a first connecting piece (3) is fixedly connected to the upper end of the valve body (1), a second connecting piece (4) is connected to the first connecting piece (3), the first connecting piece (3) is connected to the second connecting piece (4) through a fastening bolt, a sliding hole is formed in the upper end of the second connecting piece (4), a first valve rod (5) is slidably connected to the sliding hole, a valve plate (6) is fixedly connected to the lower end of the first valve rod (5), the valve plate (6) is slidably connected to one side face, opposite to the two sealing gaskets (2), a first corrugated pipe (7) is sleeved on the outer side of the first valve rod (5), and the upper end of the first corrugated pipe (7) is welded to the inner top face of the second connecting piece (4), the lower end of the first corrugated pipe (7) is welded with the upper end face of the valve plate (6), and the upper end of the first valve rod (5) penetrates through the sliding hole and is rotatably connected with a connecting rod (8).

2. The high-pressure corrugated pipe gate valve with the heat preservation jacket as claimed in claim 1, wherein a fixing plate (9) is fixedly connected to the upper end of the connecting rod (8), a second valve rod (10) is fixedly connected to the upper end of the fixing plate (9), a valve cover (11) is fixedly connected to the upper end of the second connecting member (4), and a second corrugated pipe (12) is sleeved on the outer side of the second valve rod (10).

3. The high-pressure corrugated pipe gate valve with the heat preservation jacket as claimed in claim 2, wherein the upper end of the second corrugated pipe (12) is fixedly connected with the valve cover (11), the lower end of the second corrugated pipe (12) is fixedly connected with the fixing plate (9), and the upper end of the valve cover (11) is provided with the packing box (13).

4. The high-pressure corrugated pipe gate valve with the heat-insulating jacket as claimed in claim 3, wherein a packing cover plate (14) is mounted on the packing box (13) and the upper end of the packing box (13), packing (15) is placed between the packing cover plate (14) and the packing box (13), and the packing box (13) is connected with the packing cover plate (14) through bolts.

5. The high-pressure corrugated pipe gate valve with the heat-insulating jacket as claimed in claim 3, wherein a fixing frame (16) is fixedly connected to the upper end of the stuffing box (13), a hand wheel (17) is rotatably connected to the upper end of the fixing frame (16), the lower end of the hand wheel (17) penetrates through the upper end face of the fixing frame (16) and is fixedly connected to a lead screw (18), a threaded hole (19) is formed in the second valve rod (10), and the lead screw (18) is in threaded sleeve connection with the second valve rod (10).

6. The high-pressure corrugated pipe gate valve with the heat insulation jacket as claimed in claim 1, wherein a layer of heat insulation laminate (20) is sleeved on the outer surface of the valve body (1), and the same heat insulation jacket (21) is sleeved on the outer side of the first connecting piece (3), the outer side of the second connecting piece (4) and the outer wall of the valve cover (11).