CN212839408U

CN212839408U - Steam control valve for steam pretreatment of steam lines

Info

Publication number: CN212839408U
Application number: CN202020719995.8U
Authority: CN
Inventors: 李鑫
Original assignee: Jiangsu Xingyi Valve Co ltd
Current assignee: Jiangsu Xingyi Valve Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2021-03-30
Anticipated expiration: 2030-05-06

Abstract

The utility model relates to the technical field of valves, and a steam control valve for steam pipeline's steam pretreatment is disclosed, the water-cooled steam generator comprises a valve body, the mounting hole has all been seted up to the top and the bottom of valve body both sides, the middle part fixed mounting on valve body top has the connecting block, the top fixed mounting of connecting block has the roof-rack, the top fixed mounting of roof-rack has pneumatic actuator. This a steam control valve for steam pipeline's steam pretreatment, through setting up first sealed piece and seal cover, when this steam control valve is in and closes, this moment because the design of seal cover, will play sealed effect between valve gap and the valve rod body at valve body top, thereby make steam can't enter into to the gap between valve gap and the valve rod body, the production of comdenstion water has been avoided, and because the design of first sealed piece, the sealed effect of valve body top valve gap will have been strengthened, consequently, this steam control valve's practicality has been increased.

Description

Steam control valve for steam pretreatment of steam lines

Technical Field

The utility model relates to the technical field of valves, specifically be a steam control valve for steam pipeline's steam pretreatment.

Background

The steam regulating valve takes compressed air as a power source, takes an air cylinder as an actuator, drives a valve by means of accessories such as an electric valve positioner, a converter, an electromagnetic valve, a position-retaining valve and the like, realizes switching value or proportional regulation, and receives a control signal of an industrial automatic control system to complete regulation of various process parameters such as flow, pressure, temperature and the like of a pipeline medium.

At present, the enterprise is when carrying out control regulation to the steam in the pipeline, often need use steam control valve, when steam control valve is closing, its inside high temperature high pressure steam will be in by the confined state this moment, and because do not set up corresponding sealed additional strengthening between valve rod and the valve gap, thereby lead to high temperature high pressure steam to enter into the gap between valve rod and the valve gap easily, produce the comdenstion water in making its gap easily, will lead to valve rod and valve gap department to take place the corrosion long-term in the past, thereby cause harmful effects to steam control valve's use, consequently, need improve it.

SUMMERY OF THE UTILITY MODEL

The utility model is not enough to prior art, the utility model provides a steam control valve for steam pipeline's steam pretreatment, possess and prevent that the comdenstion water from producing and sealed effectual advantage, solved when steam control valve is closing, its inside high temperature high pressure steam will be in by the confined state this moment, and because do not set up corresponding sealed additional strengthening between valve rod and the valve gap, thereby lead to high temperature high pressure steam to get into easily to the gap between valve rod and the valve gap in, produce the comdenstion water in making its gap easily, will lead to valve rod and valve gap department to take place the corrosion in the past for a long time, thereby use to cause the harmful effects problem to steam control valve.

The utility model provides a following technical scheme: a steam regulating valve for steam pretreatment of a steam pipeline comprises a valve body, wherein mounting holes are formed in the top and the bottom of two sides of the valve body, a connecting block is fixedly mounted in the middle of the top end of the valve body, an upper frame is fixedly mounted at the top of the connecting block, a pneumatic actuating mechanism is fixedly mounted at the top of the upper frame, a valve rod body is movably mounted in the pneumatic actuating mechanism, the bottom end of the valve rod body sequentially penetrates through the upper frame, the connecting block and the valve body and extends into the valve body, a movable cavity is formed between the bottom of the connecting block and the top of the valve body, a first sealing block positioned in the movable cavity is fixedly sleeved on the outer surface of the valve rod body, the bottom of the first sealing block is movably connected with the bottom of an inner cavity of the movable cavity, a sealing sleeve positioned below the first sealing block is fixedly sleeved on the outer surface of the movable cavity, and the top end of the, the bottom end of the sealing sleeve penetrates through the valve body and extends into the valve body.

Preferably, a first cavity is formed in the valve body, and a second cavity located below the first cavity is formed in the valve body.

Preferably, the inner wall of the valve body is provided with a through port located between the first cavity and the second cavity, and the valve core body is movably sleeved inside the through port.

Preferably, the top of the valve core body is fixedly provided with a second sealing block positioned above the through opening, the bottom of the second sealing block is movably connected with the inner wall of the valve body, and the middle of the top end of the second sealing block is fixedly connected with the bottom of the valve rod body.

Preferably, the inside fixed mounting of roof-rack has the stop collar, the inner wall of stop collar and the surface swing joint of valve rod body.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this a steam control valve for steam pipeline's steam pretreatment, through setting up first sealed piece and seal cover, when this steam control valve is in and closes, this moment because the design of seal cover, will play sealed effect between valve gap and the valve rod body at valve body top, thereby make steam can't enter into to the gap between valve gap and the valve rod body, the production of comdenstion water has been avoided, and because the design of first sealed piece, the sealed effect of valve body top valve gap will have been strengthened, consequently, this steam control valve's practicality has been increased.

2. This a steam control valve for steam pipeline's steam pretreatment through setting up opening, the sealed piece of case body and second, because the design of case body will play preliminary sealed effect to the opening, and because the design of the sealed piece of second, will strengthen sealedly to the opening to effectual leakage of having avoided steam, and then improved the leakproofness of this steam control valve case.

Drawings

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

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a schematic view of a partially enlarged structure at a position a of the present invention;

fig. 4 is a schematic diagram of the local enlarged structure of the utility model B.

In the figure: 1. a valve body; 2. mounting holes; 3. connecting blocks; 4. a top frame; 5. a pneumatic actuator; 6. a valve stem body; 7. a movable cavity; 8. a first seal block; 9. sealing sleeves; 10. a first cavity; 11. a second cavity; 12. a port; 13. a valve core body; 14. a second seal block; 15. a limiting sleeve.

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. 1-4, a steam regulating valve for steam pretreatment of a steam pipeline comprises a valve body 1, wherein mounting holes 2 are respectively formed at the top and the bottom of both sides of the valve body 1, a through hole 12 positioned between a first cavity 10 and a second cavity 11 is formed in the inner wall of the valve body 1, a valve core body 13 is movably sleeved in the through hole 12, a second sealing block 14 positioned above the through hole 12 is fixedly installed at the top of the valve core body 13, the bottom of the second sealing block 14 is movably connected with the inner wall of the valve body 1, the middle part of the top end of the second sealing block 14 is fixedly connected with the bottom of a valve rod body 6, the first cavity 10 is formed in the valve body 1, the second cavity 11 positioned below the first cavity 10 is formed in the valve body 1, a connecting block 3 is fixedly installed at the middle part of the top end of the valve body 1, a top frame 4 is fixedly installed at the top of the connecting block, inner wall and the surface swing joint of valve rod body 6 of stop collar 15, the top fixed mounting of roof-rack 4 has pneumatic actuator 5, pneumatic actuator 5's inside movable mounting has valve rod body 6, roof-rack 4 is run through in proper order to the bottom of valve rod body 6, connecting block 3 and valve body 1 extend to the inside of valve body 1, movable chamber 7 has been seted up between the bottom of connecting block 3 and the top of valve body 1, the fixed cover of surface of valve rod body 6 has connect and has been located the inside first sealed piece 8 of movable chamber 7, the bottom of first sealed piece 8 and the bottom swing joint of movable chamber 7 inner chamber, the outer fixed surface in movable chamber 7 has cup jointed the seal cover 9 that is located first sealed piece 8 below, the top of seal cover 9 and the bottom fixed connection of first sealed piece 8, the bottom of seal cover 9 runs through valve body 1 and extends to the inside of valve body 1.

During operation, the valve rod body 6 moves downwards due to operation of the pneumatic actuator 5, the valve core body 13 is clamped into the through opening 12, meanwhile, the bottom of the second sealing block 14 is attached to the inner wall of the valve body 1, the valve core body 13 plays a primary sealing role in the through opening 12, the second sealing block 14 strengthens the sealing effect on the through opening 12, in the process, the downward movement of the valve rod body 6 enables the first sealing block 8 and the sealing sleeve 9 to move along with the first sealing block, finally, the bottom of the first sealing block 8 is contacted with the bottom of the inner cavity of the movable cavity 7, the bottom of the sealing sleeve 9 enters the inside of the first cavity 10 through the valve cover at the top of the valve body 1, and at the moment, due to the effect of the sealing sleeve 9, a sealing effect is played between the valve cover at the top of the valve body 1 and the valve rod body 6, the steam is prevented from entering the gap between the valve cover and the valve rod body 6, and the first sealing block 8 can strengthen the sealing effect between the valve cover and the valve rod body 6.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A steam control valve for steam pipeline's steam pretreatment, including valve body (1), its characterized in that: the valve body is characterized in that mounting holes (2) are formed in the top and the bottom of two sides of the valve body (1), a connecting block (3) is fixedly mounted in the middle of the top end of the valve body (1), an upper frame (4) is fixedly mounted at the top of the connecting block (3), a pneumatic actuating mechanism (5) is fixedly mounted at the top of the upper frame (4), a valve rod body (6) is movably mounted inside the pneumatic actuating mechanism (5), the bottom end of the valve rod body (6) sequentially penetrates through the upper frame (4), the connecting block (3) and the valve body (1) and extends into the valve body (1), a movable cavity (7) is formed between the bottom of the connecting block (3) and the top of the valve body (1), a first sealing block (8) located inside the movable cavity (7) is fixedly sleeved on the outer surface of the valve rod body (6), and the bottom of the inner cavity of the first sealing block (8) is movably connected with the bottom of, the outer fixed surface in activity chamber (7) has cup jointed seal cover (9) that are located first sealed piece (8) below, the top of seal cover (9) and the bottom fixed connection of first sealed piece (8), the bottom of seal cover (9) runs through valve body (1) and extends to the inside of valve body (1).

2. The steam regulating valve for steam pre-treatment of a steam line of claim 1, wherein: a first cavity (10) is formed in the valve body (1), and a second cavity (11) located below the first cavity (10) is formed in the valve body (1).

3. The steam regulating valve for steam pre-treatment of a steam line of claim 1, wherein: the inner wall of the valve body (1) is provided with a through hole (12) located between the first cavity (10) and the second cavity (11), and the valve core body (13) is movably sleeved inside the through hole (12).

4. The steam regulating valve for steam pre-treatment of a steam line of claim 3, wherein: the top of the valve core body (13) is fixedly provided with a second sealing block (14) located above the through hole (12), the bottom of the second sealing block (14) is movably connected with the inner wall of the valve body (1), and the middle of the top end of the second sealing block (14) is fixedly connected with the bottom of the valve rod body (6).

5. The steam regulating valve for steam pre-treatment of a steam line of claim 1, wherein: the inner part of the top frame (4) is fixedly provided with a limiting sleeve (15), and the inner wall of the limiting sleeve (15) is movably connected with the outer surface of the valve rod body (6).