CN218818215U

CN218818215U - Butterfly valve with jacket structure

Info

Publication number: CN218818215U
Application number: CN202222904467.1U
Authority: CN
Inventors: 郝祥军; 卞红飞
Original assignee: Wuxi Boniu Control Valve Co ltd
Current assignee: Wuxi Boniu Control Valve Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-04-07
Anticipated expiration: 2032-11-01

Abstract

The utility model relates to a butterfly valve with press from both sides jacket structure, include valve body, valve rod, valve plate and press from both sides the cover, be provided with the valve rod in the valve body, be provided with valve plate, characterized by on the valve rod: the valve body is characterized in that shaft holes for installing the valve rod are formed in the upper end and the lower end of the valve body respectively, a clamping sleeve is arranged on the valve body outside the shaft holes, and clamping sleeve joints are arranged on two sides of the clamping sleeve respectively. The utility model adopts the design that two sealing rings are additionally arranged at the joint of the valve body and the valve rod, thereby effectively preventing the medium from permeating into the shaft sleeve when flowing through the valve body; a metal jacket is additionally arranged outside the shaft hole of the valve, hot steam or other hot media are injected into the metal jacket, so that the heating and heat preservation effects are achieved, the process media are ensured to normally pass through the valve, the media are prevented from being solidified or crystallized, and the valve is prevented from being jammed or incapable of acting; the utility model has the advantages of reasonable design, low in production cost, use cost that can effectual reduction customer.

Description

Butterfly valve with jacket structure

Technical Field

The utility model belongs to the technical field of the butterfly valve, a butterfly valve with press from both sides jacket structure is related to.

Background

The butterfly valve has good flow regulation function and sealing performance, and is widely applied to various industries such as electric power, metallurgy, chemical industry, LNG (liquefied natural gas) and the like. However, in the actual use process, due to the physical characteristics of part of process media, when flowing through the valve, solidification or crystallization can occur, which affects the use effect of the butterfly valve, and even leads to the locking of the shaft sleeve and the valve rod, which causes the jamming or the immobility of the valve, which affects the production.

Disclosure of Invention

An object of the utility model is to overcome the not enough of existence among the prior art, solve the problem that some special medium can appear solidifying or crystallization in the butterfly valve use, provide a butterfly valve with jacket structure.

In order to achieve the purpose, the following technical scheme is adopted:

the utility model provides a butterfly valve with jacket structure, includes valve body, valve rod, valve plate and presss from both sides the cover, be provided with the valve rod in the valve body, be provided with valve plate, characterized by on the valve rod: the upper end and the lower end of the valve body are respectively provided with a shaft hole for installing a valve rod, the valve body outside the shaft hole is provided with a jacket, and two sides of the jacket are respectively provided with a jacket joint; one end of the shaft hole close to the center of the valve body is respectively provided with a convex ring, and a first sealing ring is arranged between the valve plate and the convex rings; a shaft sleeve is arranged between the shaft hole and the valve rod, and a second sealing ring is arranged between the shaft sleeve and the convex ring.

Preferably, the upper end and the lower end of the valve plate are respectively provided with a valve plate base, and a limiting ring used for fixing the first sealing ring is arranged between the valve plate base and the convex ring.

Preferably, the upper end and the lower end of the valve body are respectively provided with a first valve cover and a second valve cover which are used for fixing the shaft sleeve.

Preferably, a through hole capable of being matched with the valve rod is formed in the first valve cover; and a sealing filler is arranged between the first valve cover and the shaft sleeve.

Preferably, the valve plate is provided with a sealing ring, and the sealing ring is connected with the valve plate by a valve plate pressing ring; the valve body is provided with an inclined plane which can be matched with the sealing ring.

Preferably, the valve plate base is provided with a pin hole, the valve rod is provided with a fixing hole matched with the pin hole, and the pin hole and the fixing hole are internally provided with fixing pins.

Preferably, interference fit between fixed pin and the valve plate, both utilize welded fastening.

Compared with the prior art, the utility model, have following advantage:

the utility model adopts the design that two sealing rings are additionally arranged at the joint of the valve body and the valve rod, the medium is effectively prevented from permeating into the shaft sleeve when flowing through the valve body, the metal jacket is additionally arranged outside the shaft hole of the valve, and hot steam or other hot media are injected into the metal jacket by utilizing the jacket structures at the two sides of the metal jacket, so that the heating and heat preservation effects are achieved, the process medium is ensured to normally pass through the valve, the medium is prevented from being solidified or crystallized at the joint of the valve rod and the valve body, and the valve is prevented from being jammed or incapable of acting; the utility model has the advantages of reasonable design, low in production cost, use cost that can effectual reduction customer.

Drawings

Fig. 1 is a schematic diagram of the internal structure of the present invention.

Fig. 2 is a left side view of the present invention.

Fig. 3 is a schematic diagram of the valve body structure of the present invention.

Fig. 4 is the schematic view of the valve rod and valve plate structure of the present invention.

In the figure: 1. a valve body; 2. a valve stem; 3. a valve plate; 4. a jacket; 5. a shaft hole; 6. a jacket joint; 7. a convex ring; 8. a first seal ring; 9. a shaft sleeve; 10. a second seal ring; 11. a valve plate base; 12. a limiting ring; 13. a first valve cover; 14. a second valve cover; 15. a through hole; 16. sealing and filling; 17. a seal ring; 18. pressing a ring by a valve plate; 19. an inclined surface; 20. a pin hole; 21. a fixing hole; 22. and fixing the pin.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, 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 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 efforts shall belong to the protection scope of the present invention.

As shown in fig. 1-4, a butterfly valve with a jacket structure comprises a valve body 1, a valve rod 2, a valve plate 3 and a jacket 4, wherein the valve rod 2 is arranged in the valve body 1, the valve plate 3 is arranged on the valve rod 2, the valve body 1 plays an integral supporting role, and the valve rod 2 is used for controlling the valve plate 3 to open and close;

the upper end and the lower end of the valve body 1 are respectively provided with a shaft hole 5 for installing the valve rod 2, the valve body 1 outside the shaft hole 5 is provided with a jacket 4, two sides of the jacket 4 are respectively provided with a jacket joint 6, hot steam or other hot media are injected into the jacket 4 by utilizing the jacket joints 6, the heating and heat preservation effects are achieved on the shaft hole 5 part, and the medium permeating into the shaft hole 5 is ensured not to be solidified or crystallized;

one end of the shaft hole 5 close to the center of the valve body 1 is respectively provided with a convex ring 7, a first sealing ring 8 is arranged between the valve plate 3 and the convex ring 7,

a shaft sleeve 9 is arranged between the shaft hole 5 and the valve rod 2, and a second sealing ring 10 is arranged between the shaft sleeve 9 and the convex ring 7; first sealing washer 8 and second sealing washer 10 can prevent to flow through in the medium entering shaft hole 5 of butterfly valve, and bulge loop 7 plays spacing fixed effect to first sealing washer 8 and second sealing washer 10.

Further, the upper end and the lower end of the valve plate 3 are respectively provided with a valve plate base 11, and the valve plate 3 is mounted on the valve rod 2 by using the valve plate base 11; and a limiting ring 12 for fixing the first sealing ring 8 is arranged between the valve plate base 11 and the convex ring 7.

Furthermore, the upper end and the lower end of the valve body 1 are respectively provided with a first valve cover 13 and a second valve cover 14 for fixing the shaft sleeve 9, and the second valve cover 14 also plays a role in sealing the shaft hole 5 in the lower end of the valve body 1.

Furthermore, a through hole 15 capable of being matched with the valve rod 2 is formed in the first valve cover 13, and the upper end of the valve rod 2 penetrates through the through hole 15 and protrudes out of the first valve cover 13; and a sealing packing 16 is arranged between the first valve cover 13 and the shaft sleeve 9, and the sealing packing 16 plays a role in sealing the shaft hole 5 at the upper end of the valve body 1.

Further, a sealing ring 17 is arranged on the valve plate 3, and the sealing ring 17 is connected with the valve plate 3 by a valve plate pressing ring 18; the valve body 1 is provided with an inclined surface 19 which can be matched with the sealing ring 17, and the inclined surface 19 is matched with the sealing ring 17 to seal when the butterfly valve is closed.

Furthermore, a pin hole 20 is formed in the valve plate base 11, a fixing hole 21 matched with the pin hole 20 is formed in the valve rod 2, and a fixing pin 22 is arranged in the pin hole 20 and the fixing hole 21; the valve plate 3 is connected to the valve stem 2 by a fixing pin 22.

Furthermore, the fixing pin 22 and the valve plate 3 are in interference fit, and are fixed by welding, so that the fixing pin 22 is prevented from being separated from the valve plate 3 by welding.

The working principle is as follows: when the butterfly valve is used, the first sealing ring 8 and the second sealing ring 10 which are positioned at the joint of the shaft hole 5 and the valve rod 2 can effectively prevent a medium from permeating into the shaft hole 5, and the valve rod 2 can be ensured to normally rotate; after the butterfly valve is installed on a pipeline, a steam pipe loop is connected to the jacket joint 6, hot steam is injected into the jacket 4 by the jacket joint 6 to heat the temperature of the shaft sleeve 9 in the butterfly valve, if a medium permeates into the shaft hole 5, the medium can be effectively prevented from being solidified or crystallized at a high working temperature, and the butterfly valve is prevented from being jammed or incapable of acting.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and scope of the invention, and such modifications and improvements are also considered to be within the scope of the invention.

Claims

1. The utility model provides a butterfly valve with jacket structure, includes valve body (1), valve rod (2), valve plate (3) and presss from both sides cover (4), be provided with valve rod (2) in valve body (1), be provided with valve plate (3), characterized by on valve rod (2): the upper end and the lower end of the valve body (1) are respectively provided with a shaft hole (5) for installing the valve rod (2), a jacket (4) is arranged on the valve body (1) outside the shaft hole (5), and jacket joints (6) are respectively arranged on two sides of the jacket (4); one end of the shaft hole (5) close to the center of the valve body (1) is provided with a convex ring (7) respectively, and a first sealing ring (8) is arranged between the valve plate (3) and the convex ring (7); a shaft sleeve (9) is arranged between the shaft hole (5) and the valve rod (2), and a second sealing ring (10) is arranged between the shaft sleeve (9) and the convex ring (7).

2. A butterfly valve with a jacket structure according to claim 1, characterized in that: the upper end and the lower end of the valve plate (3) are respectively provided with a valve plate base (11), and a limiting ring (12) used for fixing the first sealing ring (8) is arranged between the valve plate base (11) and the convex ring (7).

3. The butterfly valve with a jacket structure according to claim 1, wherein: the upper end and the lower end of the valve body (1) are respectively provided with a first valve cover (13) and a second valve cover (14) which are used for fixing the shaft sleeve (9).

4. A butterfly valve with a jacket structure according to claim 3, wherein: the first valve cover (13) is provided with a through hole (15) which can be matched with the valve rod (2); and a sealing filler (16) is arranged between the first valve cover (13) and the shaft sleeve (9).

5. The butterfly valve with a jacket structure according to claim 1, wherein: the valve plate (3) is provided with a sealing ring (17), and the sealing ring (17) is connected with the valve plate (3) by a valve plate pressing ring (18); the valve body (1) is provided with an inclined surface (19) which can be matched with the sealing ring (17).

6. A butterfly valve with a jacket structure according to claim 2, wherein: be provided with pinhole (20) on valve plate base (11), be provided with on valve rod (2) with pinhole (20) matched with fixed orifices (21), be provided with fixed pin (22) in pinhole (20) and fixed orifices (21).

7. The butterfly valve with a jacket structure according to claim 6, wherein: the fixed pin (22) and the valve plate (3) are in interference fit, and the fixed pin and the valve plate are fixed by welding.