CN211693595U

CN211693595U - Pneumatic film three-way shunting regulating valve sealed by corrugated pipe

Info

Publication number: CN211693595U
Application number: CN202020310452.0U
Authority: CN
Inventors: 赵荣娟
Original assignee: Hangzhou Fuyang Lianggong Instrument Co ltd
Current assignee: Hangzhou Fuyang Lianggong Instrument Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-10-16
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses an adopt bellows seal's pneumatic film tee bend reposition of redundant personnel governing valve, including the valve body, manage installation mechanism and valve rod outward, the inside of valve body is provided with the valve pocket, and the bottom of valve body installs the disk seat, the front side of valve body is fixed with the import connecting pipe, and the both sides of valve body are fixed with the exit linkage, manage installation mechanism outward and set up in the outside of import connecting pipe and exit linkage, the membrane chamber is installed to the top of valve body, and the inside of membrane chamber is provided with pneumatic membrane, the internally mounted of membrane chamber has actuating mechanism, the valve rod is fixed in actuating mechanism's below, and the push pedal is installed to the below of valve rod. The pneumatic film three-way shunting regulating valve sealed by the corrugated pipe has the advantages that the double sealing structure of the corrugated pipe and the sealing packing is adopted between the joint of the valve rod and the valve body, the sealing performance is favorably improved, and the possibility that process media leak outwards from the movement gap of the valve rod can be thoroughly eliminated.

Description

Pneumatic film three-way shunting regulating valve sealed by corrugated pipe

Technical Field

The utility model relates to a pneumatic film governing valve technical field specifically is an adopt bellows seal's pneumatic film tee bend reposition of redundant personnel governing valve.

Background

The pneumatic film regulating valve is a regulating valve for short and comprises an actuating mechanism and a regulating mechanism, the development of the pneumatic film regulating valve has been in the history of eighty years from the beginning of the 20 th century to the present, and ten major regulating valve products, such as a self-operated valve, a positioner and the like are successively generated.

The conventional pneumatic film regulating valve generally does not have a three-way structure, cannot adapt to more diversified use requirements, is insufficient in sealing performance of a valve rod in the use process, and cannot be well sealed and installed when being installed with an external pipeline.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adopt bellows seal's pneumatic film tee bend reposition of redundant personnel governing valve to current pneumatic film governing valve that proposes in solving above-mentioned background art generally does not possess the tee bend structure, can't adapt to more diversified user demand, and the in-process valve rod department leakproofness of using is not enough, also can not carry out the problem of good sealed installation when with external pipeline installation.

In order to achieve the above object, the utility model provides a following technical scheme: a pneumatic film three-way shunt regulating valve sealed by a corrugated pipe comprises a valve body, an external pipe installing mechanism and a valve rod, wherein a valve cavity is arranged inside the valve body, a valve seat is arranged at the bottom of the valve body, an inlet connecting pipe is fixed at the front side of the valve body, outlet connecting pipes are fixed at two sides of the valve body, the external pipe installing mechanism is arranged outside the inlet connecting pipe and the outlet connecting pipes, a membrane chamber is installed above the valve body, a pneumatic membrane is arranged inside the membrane chamber, a driving mechanism is installed inside the membrane chamber, the valve rod is fixed below the driving mechanism, a push plate is installed below the valve rod, a closed cover plate is fixed below the push plate, a movable groove is arranged at one side, close to the inlet connecting pipe, inside the valve body, a corrugated pipe is fixed between the joint of the valve rod and the valve body, and a sealing chamber is, and the inside of the sealed chamber is filled with a sealing packing.

Preferably, the outlet connecting pipes are provided in two numbers, and are symmetrical with each other about a vertical center line of the valve body.

Preferably, outer pipe installation mechanism is including fixed cardboard, draw-in groove, external pipeline, rubber packing ring and fixing bolt, the inner wall of import connecting pipe is fixed with fixed cardboard, and is provided with the draw-in groove between fixed cardboard and the import connecting pipe, the inner wall of draw-in groove is fixed with the rubber packing ring, external pipeline is installed to the front end of import connecting pipe, and the outside of external pipeline and import connecting pipe is provided with fixing bolt.

Preferably, the clamping groove between the fixing clamping plate and the inner wall of the inlet connecting pipe is of a circular structure, and the size of the clamping groove is matched with that of the external pipeline.

Preferably, the driving mechanism comprises a pressure inlet, a push rod, a pointer and a scale frame, the pressure inlet is arranged on the upper side of the middle of the membrane chamber, the push rod is arranged in the middle of the inside of the membrane chamber, the pointer is fixed on one side of the bottom of the push rod, and the scale frame is arranged on the outer side of the other end of the pointer.

Preferably, the symmetry center of the push rod is superposed with the symmetry centers of the membrane chamber and the valve body, and the lower part of the push rod is fixedly connected with the valve rod.

Preferably, the push plate is of a circular structure, a movable lifting structure is formed between the push plate and the movable groove, and the closed cover plate below the push plate is of an arc-shaped structure.

Compared with the prior art, the beneficial effects of the utility model are that: the pneumatic film three-way flow dividing and adjusting valve sealed by the corrugated pipe is provided with two symmetrical outlet connecting pipes which are matched with one inlet connecting pipe, so that the valve body can form a three-way structure, the flow of fluid is increased conveniently, the applicability is wider, the push rod can drive the valve rod to move up and down, the opening and closing of the valve body are controlled conveniently, and the intercepting position can be judged at the position of the scale frame through the pointer in the using process, so that the flow passing through the valve body can be adjusted conveniently;

the push plate is in a circular structure and is matched with the valve body in shape, two sides of the push plate can slide with the movable groove on the upper side in the lifting process of the valve rod, two sides of the closed cover plate can slide with the movable groove on the lower side, and the closed cover plate is in an arc-shaped structure and can be attached to the inner wall of one side close to the inlet connecting pipe so as to be convenient for carrying out closed interception on the inlet connecting pipe;

the corrugated pipe is a tubular elastic sensitive element formed by connecting foldable corrugated sheets along the folding and stretching direction, so that the upper and lower end contraction parts of the corrugated pipe can extend and move along with the corrugated pipe in the moving process of the valve rod, and a double sealing structure of the corrugated pipe and sealing filler is adopted between the joint of the valve rod and the valve body, so that the sealing performance is improved, and the possibility that a process medium is leaked outwards from a valve rod movement gap can be thoroughly eliminated;

the external pipe installation mechanism is convenient for the sealing installation between the inlet connecting pipe and the outlet connecting pipe as well as the external pipeline, the clamping groove is in a circular structure and is identical with the external pipeline in shape, the external pipeline can be clamped and installed in the clamping groove, and the rubber gasket can play a role in sealing, so that the external pipeline can be conveniently sealed and installed.

Drawings

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

FIG. 2 is a schematic view of the top view of the valve body of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

fig. 4 is an enlarged schematic structural diagram of the point B in fig. 1 according to the present invention.

In the figure: 1. a valve body; 2. a valve cavity; 3. a valve seat; 4. an inlet connection pipe; 5. an outlet connection pipe; 6. an external connection pipe mounting mechanism; 601. fixing the clamping plate; 602. a card slot; 603. connecting a pipeline externally; 604. a rubber gasket; 605. fixing the bolt; 7. a membrane chamber; 8. a pneumatic membrane; 9. a drive mechanism; 901. a pressure inlet; 902. a push rod; 903. a pointer; 904. a scale frame; 10. a valve stem; 11. pushing the plate; 12. sealing the cover plate; 13. a movable groove; 14. a bellows; 15. sealing and filling; 16. the chamber is sealed.

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, the present invention provides a technical solution: the utility model provides an adopt bellows sealed pneumatic film tee bend reposition of redundant personnel governing valve, including valve body 1, the valve pocket 2, disk seat 3, inlet connecting pipe 4, outlet connecting pipe 5, external pipe installation mechanism 6, fixed cardboard 601, draw-in groove 602, external pipeline 603, rubber gasket 604, fixing bolt 605, the diaphragm chamber 7, pneumatic membrane 8, actuating mechanism 9, pressure inlet 901, push rod 902, pointer 903, scale frame 904, valve rod 10, push pedal 11, airtight apron 12, movable groove 13, bellows 14, sealing filler 15 and seal chamber 16, the inside of valve body 1 is provided with valve pocket 2, and disk seat 3 is installed to the bottom of valve body 1, the front side of valve body 1 is fixed with inlet connecting pipe 4, and the both sides of valve body 1 are fixed with outlet connecting pipe 5, outlet connecting pipe 5 is provided with two, and be symmetrical about the vertical central line of valve body 1 between the outlet connecting pipe 5, it can make valve body 1 form three-way junction to be provided with two symmetrical outlet connecting pipe 5 and cooperate with The structure is convenient for increasing the flow of the fluid, and the applicability is wider;

the external connection pipe mounting mechanism 6 is arranged at the outer side of the inlet connecting pipe 4 and the outlet connecting pipe 5, the external connection pipe mounting mechanism 6 comprises a fixed clamping plate 601, a clamping groove 602, an external connection pipeline 603, a rubber gasket 604 and a fixed bolt 605, the fixed clamping plate 601 is fixed on the inner wall of the inlet connecting pipe 4, the clamping groove 602 is arranged between the fixed clamping plate 601 and the inlet connecting pipe 4, the rubber gasket 604 is fixed on the inner wall of the clamping groove 602, the external connection pipeline 603 is arranged at the front end of the inlet connecting pipe 4, the fixed bolt 605 is arranged at the outer side of the external connection pipeline 603 and the inlet connecting pipe 4, the clamping groove 602 between the fixed clamping plate 601 and the inner wall of the inlet connecting pipe 4 is in a circular structure, the size between the clamping groove 602 and the external connection pipeline 603 is matched, the clamping groove 602 is in a circular structure and, the rubber gasket 604 can play a role of sealing, thereby facilitating the sealing installation of the external pipe 603;

a membrane chamber 7 is arranged above the valve body 1, a pneumatic membrane 8 is arranged inside the membrane chamber 7, a driving mechanism 9 is arranged inside the membrane chamber 7, the driving mechanism 9 comprises a pressure inlet 901, a push rod 902, a pointer 903 and a scale frame 904, the pressure inlet 901 is arranged on the upper side of the middle part of the membrane chamber 7, the push rod 902 is arranged in the middle of the inside of the membrane chamber 7, the pointer 903 is fixed on one side of the bottom of the push rod 902, the scale frame 904 is arranged on the outer side of the other end of the pointer 903, the symmetry center of the push rod 902 is overlapped with the symmetry centers of the membrane chamber 7 and the valve body 1, the lower part of the push rod 902 is fixedly connected with the valve rod 10, the push rod 902 can drive the valve rod 10 to move up and down so as to control the opening and closing of the valve body 1, the valve rod 10 is fixed below the driving mechanism 9, the push plate 11 is arranged below the valve rod 10, a closed cover plate 12 is fixed below the push, push pedal 11 is circular column structure, and constitute movable elevation structure between push pedal 11 and the movable groove 13, and airtight apron 12 of push pedal 11 below is arc column structure, push pedal 11 is circular column structure and suits with valve body 1's shape, valve rod 10 lift in-process push pedal 11 both sides can slide with the movable groove 13 of upside, airtight apron 12 both sides can slide with the movable groove 13 of downside, airtight apron 12 is one side inner wall that arc column structure can laminate and be close to inlet connection pipe 4, so that carry out airtight interception to inlet connection pipe 4 department, be fixed with bellows 14 between valve rod 10 and the handing-over department of valve body 1, seal chamber 16 is installed in bellows 14's the outside, and the intussuseption of seal chamber 16 has gland packing 15.

The working principle is as follows: for the pneumatic film three-way shunt regulating valve adopting bellows seal, firstly, when in use, the pressure of an air cylinder can enter the membrane chamber 7 through the pressure inlet 901 to push the push rod 902 and the valve rod 10 to lift, in the moving process of the valve rod 10, a double seal structure of the bellows 14 and the seal packing 15 is adopted between the joint of the valve rod 10 and the valve body 1, which is beneficial to improving the sealing performance and thoroughly eliminating the possibility that process media leak outwards from the moving gap of the valve rod 10, two sides of the push plate 11 can slide with the movable groove 13 at the upper side in the moving process of the valve rod 10, two sides of the closed cover plate 12 can slide with the movable groove 13 at the lower side, at the moment, the closed cover plate 12 is in an arc structure and can be attached to the inner wall at one side close to the inlet connecting pipe 4 so as to carry out closed interception at the inlet connecting pipe 4, otherwise, and can judge the position of interception at the position of scale frame 904 through pointer 903 in this process, so as to adjust the flow through valve body 1, this valve body 1 is provided with two symmetrical outlet connection pipes 5 and can make valve body 1 form the tee bend structure in cooperation with an inlet connection pipe 4, thereby be convenient for increase the fluidic flow, the suitability is wider, when needing to install external pipeline 603, draw-in groove 602 is identical with the shape between the tubulose external pipeline 603, can make external pipeline 603 block install inside draw-in groove 602, rethread fixing bolt 605 fixes, rubber gasket 604 can play sealed effect simultaneously, thereby be convenient for the seal installation of external pipeline 603, just so accomplish the use of the whole sealed pneumatic membrane tee bend flow divider control valve of bellows.

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. The utility model provides an adopt bellows seal's pneumatic film tee bend reposition of redundant personnel governing valve, includes valve body (1), outer pipe installation mechanism (6) and valve rod (10), its characterized in that: the valve comprises a valve body (1), a valve cavity (2) is arranged inside the valve body (1), a valve seat (3) is installed at the bottom of the valve body (1), an inlet connecting pipe (4) is fixed to the front side of the valve body (1), outlet connecting pipes (5) are fixed to the two sides of the valve body (1), an outer pipe installing mechanism (6) is arranged on the outer sides of the inlet connecting pipe (4) and the outlet connecting pipes (5), a membrane chamber (7) is installed above the valve body (1), a pneumatic membrane (8) is arranged inside the membrane chamber (7), a driving mechanism (9) is installed inside the membrane chamber (7), a valve rod (10) is fixed below the driving mechanism (9), a push plate (11) is installed below the valve rod (10), a closed cover plate (12) is fixed below the push plate (11), a movable groove (13) is arranged on one side, close to the inlet connecting pipe (4), inside the valve body (1), a corrugated pipe (14) is fixed between the joint of the valve rod (10) and the valve body (1), a sealing chamber (16) is installed on the outer side of the corrugated pipe (14), and sealing filler (15) is filled in the sealing chamber (16).

2. The pneumatic diaphragm three-way shunt regulating valve sealed by the bellows according to claim 1, wherein: the number of the outlet connecting pipes (5) is two, and the outlet connecting pipes (5) are symmetrical with respect to the vertical center line of the valve body (1).

3. The pneumatic diaphragm three-way shunt regulating valve sealed by the bellows according to claim 1, wherein: outer pipe installation mechanism (6) are including fixed cardboard (601), draw-in groove (602), external pipeline (603), rubber packing ring (604) and fixing bolt (605), the inner wall of import connecting pipe (4) is fixed with fixed cardboard (601), and is provided with draw-in groove (602) between fixed cardboard (601) and import connecting pipe (4), the inner wall of draw-in groove (602) is fixed with rubber packing ring (604), external pipeline (603) are installed to the front end of import connecting pipe (4), and the outside of external pipeline (603) and import connecting pipe (4) is provided with fixing bolt (605).

4. The pneumatic diaphragm three-way flow-dividing regulating valve sealed by the bellows as claimed in claim 3, wherein: the clamping groove (602) between the fixing clamping plate (601) and the inner wall of the inlet connecting pipe (4) is of a circular structure, and the size of the clamping groove (602) is matched with that of the external pipeline (603).

5. The pneumatic diaphragm three-way shunt regulating valve sealed by the bellows according to claim 1, wherein: the driving mechanism (9) comprises a pressure inlet (901), a push rod (902), a pointer (903) and a scale frame (904), the pressure inlet (901) is formed in the upper side of the middle of the membrane chamber (7), the push rod (902) is installed in the middle of the interior of the membrane chamber (7), the pointer (903) is fixed to one side of the bottom of the push rod (902), and the scale frame (904) is installed on the outer side of the other end of the pointer (903).

6. The pneumatic diaphragm three-way shunt regulating valve sealed by the bellows according to claim 5, wherein: the symmetry center of the push rod (902) coincides with the symmetry centers of the membrane chamber (7) and the valve body (1), and the lower part of the push rod (902) is fixedly connected with the valve rod (10).

7. The pneumatic diaphragm three-way shunt regulating valve sealed by the bellows according to claim 1, wherein: the push plate (11) is of a circular structure, a movable lifting structure is formed between the push plate (11) and the movable groove (13), and the closed cover plate (12) below the push plate (11) is of an arc-shaped structure.