CN113280123B - Composite sealing valve - Google Patents
Composite sealing valve Download PDFInfo
- Publication number
- CN113280123B CN113280123B CN202110645501.5A CN202110645501A CN113280123B CN 113280123 B CN113280123 B CN 113280123B CN 202110645501 A CN202110645501 A CN 202110645501A CN 113280123 B CN113280123 B CN 113280123B
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- Prior art keywords
- valve
- hole
- rod
- valve rod
- bracket
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 56
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 230000006835 compression Effects 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims abstract description 30
- 239000012530 fluid Substances 0.000 claims abstract description 25
- 238000005192 partition Methods 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims description 11
- 238000012856 packing Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
A composite seal valve comprising: the valve body is provided with a first fluid channel and a second fluid channel at the left side and the right side, and a partition hole communicated with the first fluid channel and the second fluid channel is also formed in the valve body; a valve seat located in the partition hole; the valve comprises a first valve core, a second valve core and a valve rod, wherein the first valve core comprises a sealing part and a connecting part, the sealing part can be inserted into a matching hole, and the connecting part is movably connected with the valve rod; the connecting part penetrates out of the top of the second valve core, and a first compression spring is arranged between the stepped surface and the second valve core; the support is fixedly connected with the valve body, and the valve rod is in threaded connection with the support. The composite sealing valve has double sealing function, better sealing performance than a valve with only one seal, tighter seal and longer service life.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a composite sealing valve.
Background
The valve is a pipeline accessory for opening and closing a pipeline, controlling the flow direction, adjusting and controlling the parameters (temperature, pressure and flow) of a conveying medium. It can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media. The sealing performance of the valve is the capability of preventing medium leakage at each sealing part of the valve, and is the most important technical performance index of the valve. In the prior art, the valve is only provided with one seal, and is easy to be washed and corroded under severe working condition adjustment, so that the valve is internally leaked, and the sealing performance of the valve is seriously influenced.
Disclosure of Invention
The invention aims to provide a composite sealing valve, which solves the problems in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a composite seal valve comprising:
The valve body is provided with a first fluid channel and a second fluid channel at the left side and the right side, a partition hole communicated with the first fluid channel and the second fluid channel is also arranged in the valve body, and an intersection of the first fluid channel and the partition hole is positioned above an intersection of the second fluid channel and the partition hole;
The valve seat is positioned in the partition hole, the valve seat is positioned between the two intersecting openings, the upper end of the valve seat is provided with a matching part, the matching part is internally provided with a matching hole, and a gap is reserved between the outer surface of the matching part and the partition hole;
The valve comprises a first valve core, a second valve core and a valve rod, wherein the first valve core comprises a sealing part and a connecting part, the sealing part can be inserted into a matching hole, after the sealing part is inserted into the matching hole, all or part of the outer surface of the sealing part is contacted with the side surface of the matching hole, a horizontal step surface is arranged on the outer side of the transition part of the sealing part and the connecting part, and the connecting part is movably connected with the valve rod;
the second valve core is internally provided with a stepped hole, the first valve core is arranged in the stepped hole, all or part of the side surface of the stepped hole is contacted with the outer surface of the matching part, the connecting part penetrates out from the top of the second valve core, the top of the second valve core is positioned between the valve rod and the stepped surface, the top surface of the second valve core is mutually abutted against the bottom surface of the valve body, and a first compression spring is arranged between the stepped surface and the second valve core;
the support, support and valve body fixed connection, the valve rod stretches into in the support, and wears out from the top of support, valve rod and support threaded connection.
On the basis of the scheme and as a preferable scheme of the scheme, the inner surface and the outer surface of the top of the matching part are respectively provided with a conical surface, and the outer surface of the sealing part and the side surface of the stepped hole are respectively provided with a conical surface matched with the sealing part.
On the basis of the scheme and as the preferable scheme of the scheme, a threaded hole is formed in the connecting portion, a screw is connected to the threaded hole in a threaded mode, a jack is formed in the bottom of the valve rod, a waist-shaped hole is formed in the valve rod, the waist-shaped hole penetrates through the jack, the connecting portion is located in the jack, two ends of the screw are located in the waist-shaped hole, the screw can move up and down in the waist-shaped hole after being connected with the first valve core, and the maximum compression amount of the first compression spring is larger than the maximum moving distance of the screw in the waist-shaped hole.
On the basis of the above scheme and as a preferable scheme of the above scheme, the valve rod comprises an upper valve rod and a lower valve rod, and the upper valve rod and the lower valve rod are connected through a compensator; the upper portion and the support threaded connection of last valve rod, the lower part and the compensator fixed connection of last valve rod, lower valve rod and compensator swing joint, be equipped with second compression spring between last valve rod and the lower valve rod, second compression spring is located inside the compensator, the side fixedly connected with of compensator prevents changeing the card, prevent changeing card and support swing joint, just prevent changeing the card and only can reciprocate along the support.
On the basis of the scheme and as the preferable scheme of the scheme, the upper valve rod comprises a trapezoidal screw rod and a trapezoidal nut, the trapezoidal screw rod is in threaded connection with the trapezoidal nut, the trapezoidal nut extends out of the top end of the bracket, and the trapezoidal nut is in rotary connection with the bracket.
On the basis of the scheme and as the preferable scheme of the scheme, the lower end of the bracket is connected with a valve cover, the valve cover is internally provided with a filler, the valve rod passes through the middle of the filler, and the valve body, the valve seat and the valve cover are fixedly connected together through bolts.
On the basis of the scheme and as a preferable scheme of the scheme, a pressing sleeve is arranged in the partition hole, the bottom of the pressing sleeve is in contact with the valve seat, and the top of the pressing sleeve is in contact with the end face of the valve cover.
On the basis of the scheme and as a preferable scheme of the scheme, a positioning sleeve is arranged between the bracket and the valve cover, and the bolt passes through the positioning sleeve.
On the basis of the scheme and as a preferable scheme of the scheme, sealing gaskets are arranged between the valve cover and the valve body and between the valve seat and the valve body; the bottom of the filler is provided with a metal gasket, and the metal gasket is arranged between the filler and the valve cover.
On the basis of the scheme and as a preferable scheme of the scheme, the top of the valve rod is connected with a hand wheel.
The invention has the beneficial effects that: the composite sealing valve has double sealing function, better sealing performance than a valve with only one seal, tighter seal and longer service life; a first compression spring is arranged between the first valve core and the second valve core, so that the valve has an automatic compensation sealing function; the second compression spring is arranged between the upper valve rod and the lower valve rod, so that the upper valve rod and the lower valve rod are always in a compression state when in sealing, the lower valve rod can always compress two valve cores, and the sealing performance of the whole valve is better; the trapezoidal screw rod can be driven to rotate by rotating the trapezoidal nut, so that the threaded connection between the upper valve rod and the bracket is changed into rotary connection, and the bracket is prevented from being worn; the upper valve rod and the lower valve rod enable three-point contact between the valve rod and the trapezoidal nut, the filler and the valve seat to be changed into two-point contact between the lower valve rod and the filler and between the lower valve rod and the valve seat, so that twisting and deformation of the valve rod caused by uneven stress are avoided; the valve can be fixedly connected by only using bolts, is convenient to assemble, and avoids connecting at a plurality of positions by using fasteners.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a cross-sectional view of a valve seat.
Fig. 3 is a cross-sectional view of the first valve spool.
Fig. 4 is a cross-sectional view of the second valve spool.
Fig. 5 is a cross-sectional view of a portion of the structure of the present invention.
Fig. 6 is a cross-sectional view of the valve stem.
The reference numerals are as follows:
1. a valve body; 101. a first fluid passage; 102. a second fluid passage; 103. a partition hole;
2. A valve seat; 201. a mating portion; 202. a mating hole;
3. A first valve core; 301. a sealing part; 302. a connection part; 303. a step surface; 304. a threaded hole;
4. A second valve core; 401. a stepped hole;
5. A valve stem; 501. a jack; 502. a waist-shaped hole; 503. an upper valve rod; 5031. a trapezoidal screw rod; 5032. a trapezoidal nut; 504. a lower valve rod;
6. A first compression spring; 7. a bracket;
8. A conical surface; 9. a screw; 10. a compensator; 11. a second compression spring; 12. anti-spin card; 13. a valve cover; 14. a filler; 15. a bolt; 16. a compacting sleeve; 17. a positioning sleeve; 18. a sealing gasket; 19. a hand wheel; 20. a metal gasket.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1 to 6, a composite sealing valve comprises:
The valve body 1, the left and right sides of the valve body 1 are provided with a first fluid channel 101 and a second fluid channel 102, the valve body 1 is also provided with a partition hole 103 communicated with the first fluid channel 101 and the second fluid channel 102, and the intersection of the first fluid channel 101 and the partition hole 103 is positioned above the intersection of the second fluid channel 102 and the partition hole 103;
The valve seat 2 is positioned in the partition hole 103, the valve seat 2 is positioned between two intersecting openings, the upper end of the valve seat 2 is provided with a matching part 201, the matching part 201 is provided with a matching hole 202, and a gap is reserved between the outer surface of the matching part 201 and the partition hole 103;
The first valve core 3, the first valve core 3 comprises a sealing part 301 and a connecting part 302, the sealing part 301 can be inserted into the matching hole 202, when the sealing part 301 is inserted into the matching hole 202, all or part of the outer surface of the sealing part 301 is contacted with the side surface of the matching hole 202, a horizontal step surface 303 is arranged on the outer side of the transition part of the sealing part 301 and the connecting part 302, and the connecting part 302 is movably connected with the valve rod 5;
A second valve core 4, wherein a stepped hole 401 is formed in the second valve core 4, the first valve core 3 is arranged in the stepped hole 401, all or part of the side surface of the stepped hole 401 is in contact with the outer surface of the matching part 201, the connecting part 302 penetrates out from the top of the second valve core 4, the top of the second valve core 4 is positioned between the valve rod 5 and the stepped surface 303, the top surface of the second valve core 4 is in contact with the bottom surface of the valve body 1, and a first compression spring 6 is arranged between the stepped surface 303 and the second valve core 4;
The support 7, support 7 and valve body 1 fixed connection, valve rod 5 stretches into in the support 7, and wears out from the top of support 7, valve rod 5 and support 7 threaded connection.
When the valve is used, the valve rod is rotated and is in threaded connection with the bracket, the valve rod moves downwards, and the valve rod downwards extrudes the first valve core and the second valve core, so that the first valve core and the second valve core are respectively contacted with the inner surface and the outer surface of the valve seat, and double sealing is achieved; and a first compression spring is arranged between the first valve core and the second valve core, when the first valve core is worn or corroded, the first valve core can be automatically extruded downwards, and the first valve core is forced to be always in contact with the valve seat, so that the sealing effect is ensured. The composite sealing valve has double sealing function, better sealing performance than a valve with only one seal, tighter seal and longer service life; a first compression spring is arranged between the first valve core and the second valve core, so that the valve has an automatic compensation sealing function.
The inner and outer surfaces of the top of the matching part 201 are respectively provided with a conical surface 8, and the outer surface of the sealing part 301 and the side surface of the stepped hole 401 are respectively provided with a conical surface 8 matched with the sealing part. The first valve core and the second valve core are contacted with each other through the conical surface and the conical surface of the valve seat, so that the contact area between the first valve core and the second valve core is increased, and the sealing effect is better.
The connecting part 302 is provided with a threaded hole 304, the threaded hole 304 is internally and threadedly connected with a screw 9, the bottom of the valve rod 5 is provided with an inserting hole 501, the valve rod 5 is provided with a waist-shaped hole 502, the waist-shaped hole 502 passes through the inserting hole 501, the connecting part 302 is positioned in the inserting hole 501, two ends of the screw 9 are positioned in the waist-shaped hole 502, the screw 9 can move up and down in the waist-shaped hole 502 after the screw 9 is connected with the first valve core 3, and the maximum compression amount of the first compression spring 6 is larger than the maximum moving distance of the screw 9 in the waist-shaped hole 502. When the valve rod is rotated, the valve rod moves downwards to press the first valve core first, so that the first valve core is contacted with the valve seat first; and when the valve rod continues to rotate, the valve rod continues to move downwards, and when the first compression spring is compressed to the limit, the second valve core is forced to move downwards, so that the second valve core is contacted with the valve seat. Thus, the first valve core and the second valve core are contacted with the valve seat in sequence, and two sealing structures are formed.
The valve rod 5 comprises an upper valve rod 503 and a lower valve rod 504, and the upper valve rod 503 and the lower valve rod 504 are connected through the compensator 10; the upper portion of upper valve rod 503 and support 7 threaded connection, the lower part and the compensator 10 fixed connection of upper valve rod 503, lower valve rod 504 and compensator 10 swing joint, be equipped with second compression spring 11 between upper valve rod 503 and the lower valve rod 504, second compression spring 11 is located inside the compensator 10, the side fixedly connected with anti-rotation card 12 of compensator 10, anti-rotation card 12 and support 7 swing joint, just anti-rotation card 12 only can reciprocate along support 7.
One side of the lower valve rod, which is close to the upper valve rod, is provided with an annular clamping groove, a clamping ring is arranged in the clamping groove, the outer diameter of the clamping ring is larger than the diameter of the lower valve rod, a stepped hole is formed in the compensator, and the clamping ring is positioned in the stepped hole. The lower valve rod can be rotationally clamped in the compensator.
The second compression spring is arranged between the upper valve rod and the lower valve rod, so that the upper valve rod and the lower valve rod are always in a compressed state when the valve is sealed, the lower valve rod is ensured to always compress the two valve cores, and the sealing performance of the whole valve is better.
The upper valve rod 503 comprises a trapezoidal screw rod 5031 and a trapezoidal nut 5032, the trapezoidal screw rod 5031 is in threaded connection with the trapezoidal nut 5032, the trapezoidal nut 5032 extends out of the top end of the bracket 7, and the trapezoidal nut 5032 is in rotary connection with the bracket 7. The trapezoidal screw rod can be driven to rotate by rotating the trapezoidal nut, so that the threaded connection between the upper valve rod and the bracket is changed into rotary connection, and the bracket is prevented from being worn.
The lower extreme of support 7 is connected with valve gap 13, be equipped with packing 14 in the valve gap 13, valve rod 5 passes from packing 14 centre, valve body 1, disk seat 2 and valve gap 13 pass through bolt 15 fixed connection together. The valve rod is contacted with the filler, so that the friction force between the valve rod and the filler is increased, the stability of the valve rod is improved, and the valve rod is ensured not to be easy to lose efficacy. The upper valve rod and the lower valve rod enable three-point contact between the valve rod and the trapezoidal nut, the packing and the valve seat to be changed into two-point contact between the lower valve rod and the packing and the valve seat, and distortion and deformation of the valve rod caused by uneven stress are avoided.
The partition hole 103 is internally provided with a pressing sleeve 16, the bottom of the pressing sleeve 16 is contacted with the valve seat 2, and the top of the pressing sleeve 16 is contacted with the end face of the valve cover 13. A positioning sleeve 17 is arranged between the bracket 7 and the valve cover 13, and the bolt 15 passes through the positioning sleeve 17. The compression sleeve and the positioning sleeve enable the whole valve to be fixedly connected by only using bolts, the assembly is convenient, and the connection of a plurality of positions by using fasteners is avoided.
Sealing gaskets 18 are arranged between the valve cover 13 and the valve body 1 and between the valve seat 2 and the valve body 1, and the sealing gaskets can increase the sealing performance of the valve, so that liquid is less prone to leakage. The bottom of the packing 14 is provided with a metal gasket 20, and the metal gasket 20 is arranged between the packing 14 and the valve cover 13.
The top of the valve rod 5 is connected with a hand wheel 19, which is convenient for rotation to open or close the valve.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A composite seal valve, comprising:
The valve comprises a valve body (1), wherein a first fluid channel (101) and a second fluid channel (102) are arranged on the left side and the right side of the valve body (1), a partition hole (103) communicated with the first fluid channel (101) and the second fluid channel (102) is further formed in the valve body (1), and an intersection of the first fluid channel (101) and the partition hole (103) is positioned above an intersection of the second fluid channel (102) and the partition hole (103);
The valve seat (2) is positioned in the partition hole (103), the valve seat (2) is positioned between two intersecting openings, the upper end of the valve seat (2) is provided with a matching part (201), the matching part (201) is internally provided with a matching hole (202), and a gap is reserved between the outer surface of the matching part (201) and the partition hole (103);
The valve comprises a first valve core (3), wherein the first valve core (3) comprises a sealing part (301) and a connecting part (302), the sealing part (301) can be inserted into a matching hole (202), after the sealing part (301) is inserted into the matching hole (202), all or part of the outer surface of the sealing part (301) is in contact with the side surface of the matching hole (202), a horizontal step surface (303) is arranged on the outer side of the transition part of the sealing part (301) and the connecting part (302), and the connecting part (302) is movably connected with a valve rod (5);
The valve comprises a first valve core (4), a second valve core (4) and a first compression spring (6), wherein a stepped hole (401) is formed in the first valve core (4), the first valve core (3) is arranged in the stepped hole (401), all or part of the side surface of the stepped hole (401) is in contact with the outer surface of a matching part (201), a connecting part (302) penetrates out of the top of the first valve core (4), the top of the first valve core (4) is positioned between a valve rod (5) and a stepped surface (303), the top surface of the first valve core (4) is in contact with the bottom surface of a valve body (1), and the first compression spring (6) is arranged between the stepped surface (303) and the first valve core (4);
The valve rod (5) extends into the bracket (7) and penetrates out of the top of the bracket (7), and the valve rod (5) is in threaded connection with the bracket (7);
the inner surface and the outer surface of the top of the matching part (201) are respectively provided with a conical surface (8), and the outer surface of the sealing part (301) and the side surface of the stepped hole (401) are respectively provided with a conical surface (8) matched with the sealing part;
the connecting part (302) is provided with a threaded hole (304), a screw rod (9) is connected in the threaded hole (304) in a threaded manner, the bottom of the valve rod (5) is provided with an inserting hole (501), the valve rod (5) is provided with a waist-shaped hole (502), the waist-shaped hole (502) penetrates through the inserting hole (501), the connecting part (302) is positioned in the inserting hole (501), two ends of the screw rod (9) are positioned in the waist-shaped hole (502), the screw rod (9) can move up and down in the waist-shaped hole (502) after the screw rod (9) is connected with the first valve core (3), and the maximum compression amount of the first compression spring (6) is larger than the maximum moving distance of the screw rod (9) in the waist-shaped hole (502);
The valve rod (5) comprises an upper valve rod (503) and a lower valve rod (504), and the upper valve rod (503) and the lower valve rod (504) are connected through a compensator (10); the upper part of the upper valve rod (503) is in threaded connection with the bracket (7), the lower part of the upper valve rod (503) is fixedly connected with the compensator (10), the lower valve rod (504) is movably connected with the compensator (10), a second compression spring (11) is arranged between the upper valve rod (503) and the lower valve rod (504), the second compression spring (11) is positioned in the compensator (10), an anti-rotation clamp (12) is fixedly connected with the side surface of the compensator (10), the anti-rotation clamp (12) is movably connected with the bracket (7), and the anti-rotation clamp (12) can only move up and down along the bracket (7);
The upper valve rod (503) comprises a trapezoidal screw rod (5031) and a trapezoidal nut (5032), the trapezoidal screw rod (5031) is in threaded connection with the trapezoidal nut (5032), the trapezoidal nut (5032) extends out of the top end of the bracket (7), and the trapezoidal nut (5032) is in rotary connection with the bracket (7);
the lower end of the bracket (7) is connected with a valve cover (13), a filler (14) is arranged in the valve cover (13), the valve rod (5) passes through the filler (14), and the valve body (1), the valve seat (2) and the valve cover (13) are fixedly connected together through bolts (15);
The partition hole (103) is internally provided with a compression sleeve (16), the bottom of the compression sleeve (16) is in contact with the valve seat (2), and the top of the compression sleeve (16) is in contact with the end face of the valve cover (13).
2. A composite seal valve as defined in claim 1, wherein: a positioning sleeve (17) is arranged between the bracket (7) and the valve cover (13), and the bolt (15) passes through the positioning sleeve (17).
3. A composite seal valve as defined in claim 1, wherein: sealing gaskets (18) are arranged between the valve cover (13) and the valve body (1) and between the valve seat (2) and the valve body (1); the bottom of the packing (14) is provided with a metal gasket (20), and the metal gasket (20) is arranged between the packing (14) and the valve cover (13).
4. A composite seal valve as defined in claim 1, wherein: the top of the valve rod (5) is connected with a hand wheel (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110645501.5A CN113280123B (en) | 2021-06-10 | 2021-06-10 | Composite sealing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110645501.5A CN113280123B (en) | 2021-06-10 | 2021-06-10 | Composite sealing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113280123A CN113280123A (en) | 2021-08-20 |
| CN113280123B true CN113280123B (en) | 2024-11-08 |
Family
ID=77284081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110645501.5A Active CN113280123B (en) | 2021-06-10 | 2021-06-10 | Composite sealing valve |
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| CN216923218U (en) * | 2021-06-10 | 2022-07-08 | 江西罡贝流体自动控制技术有限公司 | Composite sealing valve |
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| CN2823744Y (en) * | 2005-07-15 | 2006-10-04 | 翁四川 | Valve rod sealer and stop valve, gate valve and ball valve using same |
| CN101196242A (en) * | 2007-12-29 | 2008-06-11 | 株洲南方阀门股份有限公司 | Quick service type dual-sealing checking-valve |
| CN103591336A (en) * | 2013-11-25 | 2014-02-19 | 江苏星河阀门有限公司 | Two-valve group of corrugated pipe instrument |
| CN205173517U (en) * | 2015-12-03 | 2016-04-20 | 德科隆（无锡）流体控制有限公司 | Dual seal stop valve |
| CN106090246A (en) * | 2016-08-17 | 2016-11-09 | 江苏海纳机电集团有限公司 | A kind of hand stop valve with sealing compensation |
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| CN216923218U (en) * | 2021-06-10 | 2022-07-08 | 江西罡贝流体自动控制技术有限公司 | Composite sealing valve |
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