CN116877710A - Double-sealing element for valve and double-sealing valve - Google Patents

Double-sealing element for valve and double-sealing valve Download PDF

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Publication number
CN116877710A
CN116877710A CN202310854179.6A CN202310854179A CN116877710A CN 116877710 A CN116877710 A CN 116877710A CN 202310854179 A CN202310854179 A CN 202310854179A CN 116877710 A CN116877710 A CN 116877710A
Authority
CN
China
Prior art keywords
sealing
valve
sealing block
valve body
block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310854179.6A
Other languages
Chinese (zh)
Inventor
陈雷
卢正原
刘快乐
陈晓宇
张朝
武兴广
吴业飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Linuo Flow Control Technology Co ltd
Original Assignee
Zhejiang Linuo Flow Control Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Linuo Flow Control Technology Co ltd filed Critical Zhejiang Linuo Flow Control Technology Co ltd
Priority to CN202310854179.6A priority Critical patent/CN116877710A/en
Publication of CN116877710A publication Critical patent/CN116877710A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
    • 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
    • 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
    • F16K1/52—Means for additional adjustment of the rate of flow
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Sliding Valves (AREA)

Abstract

The invention discloses a double sealing element for a valve and a double sealing valve, wherein a valve rod is rotated clockwise through a hand wheel to drive a second sealing block to move downwards, the second sealing block moves downwards while pushing a first sealing block downwards through a fastening rod, a small valve core seals an opening, when a valve body is closed, primary external sealing and primary internal sealing can be formed simultaneously, more reliable sealing performance is provided, when the first sealing block is damaged due to impact, the second sealing block can continue sealing, the sealing performance of the valve body is improved, when the valve body needs to be finely adjusted and throttled, the hand wheel is rotated anticlockwise to drive the second sealing block and the first sealing block to move upwards to stop rotating when the first sealing block is separated from sealing of a split pipe, at the moment, under the action of the upward movement of the first sealing block, the small valve core is separated from sealing of the opening, water flow flows into a water outlet from the split pipe and is discharged, and flow regulation in a smaller range can be realized.

Description

Double-sealing element for valve and double-sealing valve
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a double-sealing element for a valve and a double-sealing valve.
Background
The valve is a control component in a fluid conveying system and is a pipeline accessory for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters (temperature, pressure and flow) of a conveying medium, and the valve structure mainly realizes sealing and sealing of a valve body through structures such as a valve plate, a flashboard and a valve ball, so that the shutoff in the fluid conveying process is realized, a passage in the valve body is blocked, the fluid is shut off, and the integral control of the valve is realized.
According to the search, chinese publication (bulletin) is CN219082315U, a valve sealing structure is provided, the valve sealing structure comprises a front valve body, a rear valve body is arranged on one side of the front valve body, the front valve body is connected with the rear valve body through bolts, an O-shaped sealing ring is arranged at the joint of the front valve body and the rear valve body, valve seats are connected with one side of the front valve body and one side of the rear valve body through bolts, sealing rings are arranged at the joint of the valve seats, the front valve body and the rear valve body, a ball body is arranged between the valve seats, the outer circular wall surface of the ball body is tightly jointed with two sides, which are close to the two valve seats, of the valve rod body and the valve rod hole of the front valve body under the cooperation of a packing gasket and a packing gland, and good sealing effect is achieved;
in the prior art, like the valve sealing structure, although the valve body can be sealed, when fluid passes through the sealing element, the flow speed of the fluid can be accelerated due to small passage area, the rapidly flowing fluid can generally have an erosion effect on the valve sealing element, particularly, the pressure difference between the fluid at two ends of the valve is large when the valve is opened and closed, the erosion effect of the rapidly flowing fluid on the rubber sealing element of the valve is extremely obvious, the sealing element can be aged, and the sealing element can be aged to directly reduce the sealing performance of the valve, so that the use effect of the valve is affected.
Disclosure of Invention
The present invention is directed to a dual sealing member for a valve and a dual sealing valve, which solve the problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a double seal spare for valve, includes the valve body, water inlet and delivery port have been seted up respectively at the valve body both ends, the cavity has been seted up to the switch-on department that just is located water inlet and delivery port in the valve body, cavity both sides fixedly connected with closing plate, the export has been seted up on closing plate right side and the delivery port switch-on department, closing plate bottom both sides fixedly connected with sealing seat, be equipped with first sealing block in the cavity and between two sets of closing plates, first sealing block top is through fastening rod sliding connection has the second sealing block.
Preferably, the bottom of the first sealing block is fixedly connected with a small valve core, a sliding groove is formed in the middle of the second sealing block, and a fastening rod at the top of the first sealing block is slidably connected in the sliding groove.
Preferably, the top of the first sealing block is fixedly connected with guide rods which are positioned on two sides of the fastening rod, the top of the guide rods penetrates through the guide grooves formed in the surface of the second sealing block in a sliding mode, springs are sleeved on the guide rods, and two ends of each spring are fixedly connected with the first sealing block and the second sealing block respectively.
Preferably, an opening is formed between the two groups of sealing seats, the bottom of the small valve core is matched with the opening to seal, and a shunt tube is arranged on the right side of the cavity and positioned at the top of the sealing seat and communicated with the water outlet.
Preferably, the top of the valve body is in threaded connection with a valve cover through a bolt.
Preferably, the top of the second sealing block is rotationally connected with a valve rod, the other end of the valve rod rotationally penetrates through the valve cover and extends to the outer side, and a hand wheel is fixedly connected to one end of the valve rod extending to the outer side.
Preferably, the surfaces of the first sealing block, the second sealing block and the small valve core are all provided with sealing rings.
The invention also provides a double-seal valve which comprises the double-seal element for the valve.
Preferably, the double-seal valve further comprises two groups of connecting pipes, the connecting pipes are communicated with the valve body, and a filter screen is arranged in each connecting pipe.
Preferably, each group of connecting pipes is fixedly connected with a sealing element on the outer side face, an annular groove is formed in the sealing element, and a rubber ring is arranged in the annular groove.
The invention has the technical effects and advantages that: according to the double-sealing piece and the double-sealing valve for the valve, the valve rod is rotated clockwise through the hand wheel to drive the second sealing block to move downwards, the second sealing block moves downwards while pushing the first sealing block to move downwards through the fastening rod, both sides of the first sealing block and both sides of the second sealing block are contacted with the inner wall of the sealing plate through the sealing rings and seal the cavity, the small valve core seals the opening, and when the valve body is closed, primary external sealing and primary internal sealing can be formed simultaneously, so that more reliable sealing performance is provided, and when the first sealing block is damaged due to impact, the second sealing block can be sealed continuously, so that the sealing performance of the valve body is improved;
when the valve body needs to be finely adjusted and throttled, the hand wheel rotates anticlockwise to enable the valve rod to rotate, the second sealing block and the first sealing block are driven to move upwards to enable the first sealing block to stop rotating when the first sealing block is separated from sealing of the split pipe, at the moment, under the action of upward movement of the first sealing block, the small valve core is separated from sealing of the opening, water flows into the water outlet from the split pipe and is discharged, the small valve core is separated from sealing and is discharged from the split pipe, flow regulation in a smaller range can be achieved, flow control precision of the valve body is improved, and the positions of the second sealing block, the first sealing block and the small valve core are adjusted by anticlockwise rotation of the hand wheel to enable the second sealing block, the first sealing block and the small valve core to be completely separated from blocking of the opening, the outlet and the split pipe, and quick flow in a large range can be achieved;
when the valve body is connected with an external pipeline, the sealing element can be inserted into an annular groove formed in the sealing element and sealed through a rubber ring, so that the sealing performance of the pipeline connection is ensured, and the leakage of a medium is prevented.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of the first seal block of the present invention disengaged from the split-flow tube seal;
FIG. 4 is a schematic view of the first seal block and the second seal block of the present invention disengaged from the outlet seal;
FIG. 5 is an enlarged view of the invention at A in FIG. 2;
FIG. 6 is a schematic view of a connecting tube according to the present invention;
fig. 7 is a schematic structural view of the seal of the present invention.
In the figure: 1. a valve body; 101. a spring; 102. a small valve core; 103. an outlet; 104. a fastening rod; 2. a water inlet; 3. a water outlet; 4. a cavity; 5. a sealing plate; 6. a sealing seat; 7. a first sealing block; 8. a second sealing block; 9. a chute; 10. a guide rod; 11. a guide groove; 12. an opening; 13. a shunt; 14. a bolt; 15. a valve cover; 16. a valve stem; 17. a hand wheel; 18. a seal ring; 19. a connecting pipe; 20. a filter screen; 21. a seal; 22. an annular groove; 23. a rubber ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
The invention provides a double sealing piece for a valve, as shown in figures 1-7, which comprises a valve body 1, wherein a water inlet 2 and a water outlet 3 are respectively formed at two ends of the valve body 1, a cavity 4 is formed in the valve body 1 and positioned at a connection position of the water inlet 2 and the water outlet 3, sealing plates 5 are fixedly connected to two sides of the cavity 4, an outlet 103 is formed at a connection position of the right side of the sealing plates 5 and the water outlet 3, sealing seats 6 are fixedly connected to two sides of the bottom of the sealing plates 5, a first sealing block 7 is arranged in the cavity 4 and positioned between the two groups of sealing plates 5, and the top of the first sealing block 7 is slidably connected with a second sealing block 8 through a fastening rod 104.
The small valve core 102 is fixedly connected to the bottom of the first sealing block 7, the sliding groove 9 is formed in the middle of the second sealing block 8, the fastening rod 104 at the top of the first sealing block 7 is slidably connected in the sliding groove 9, the second sealing block 8 moves downwards and pushes the first sealing block 7 and the small valve core 102 to move through the fastening rod 104, when the small valve core 102 is sealed with the opening 12, the hand wheel 17 is continuously rotated to enable the second sealing block 8 to be attached to the first sealing block 7, sealing strength between the second sealing block 8 and the first sealing block is improved, and shaking is avoided when a large-flow water body impacts the first sealing block 7.
The top of the first sealing block 7 is fixedly connected with guide rods 10 which are positioned on two sides of the fastening rod 104, the top of the guide rods 10 penetrates through guide grooves 11 formed in the surface of the second sealing block 8 in a sliding mode, springs 101 are sleeved on the guide rods 10, two ends of each spring 101 are fixedly connected with the first sealing block 7 and the second sealing block 8 respectively, and when the second sealing block 8 moves upwards to drive the first sealing block 7, stress on two sides of the second sealing block is even.
An opening 12 is formed between the two groups of sealing seats 6, the bottom of the small valve core 102 is matched with the opening 12 to seal, a shunt tube 13 is formed on the right side of the cavity 4 and positioned at the top of the sealing seat 6, and the shunt tube 13 is communicated with the water outlet 3.
The valve body 1 top has valve gap 15 through bolt 14 spiro union, through bolt 14 spiro union valve gap 15, can make things convenient for later stage dismantlement to the inside maintenance of valve body 1.
The top of the second sealing block 8 is rotatably connected with a valve rod 16, the other end of the valve rod 16 penetrates through the valve cover 15 in a rotating mode and extends to the outer side, a hand wheel 17 is fixedly connected to one end of the valve rod 16 extending to the outer side, and the positions of the second sealing block 8, the first sealing block 7 and the small valve core 102 can be adjusted by rotating the hand wheel 17.
The surfaces of the first sealing block 7, the second sealing block 8 and the small valve core 102 are respectively provided with a sealing ring 18, and the sealing rings 18 are used for sealing to improve the tightness of the internal sealing of the valve body 1.
The invention also provides a double-seal valve which comprises the double-seal element for the valve.
The double-seal valve further comprises two groups of connecting pipes 19, the connecting pipes 19 are communicated with the valve body 1, a filter screen 20 is arranged in each connecting pipe 19, and impurities in water are filtered when water flows into the valve body 1 during water flowing, so that the inside of the valve body 1 is prevented from being blocked.
Each group of connecting pipes 19 is fixedly connected with a sealing piece 21 on the outer side surface, an annular groove 22 is formed in the sealing piece 21, a rubber ring 23 is arranged in the annular groove 22, and the sealing piece 21 can ensure the sealing performance of the pipeline connection when the valve body 1 is connected with an external pipeline.
According to the double-sealing piece and the double-sealing valve for the valve, the valve rod 16 is rotated clockwise through the hand wheel 17 to drive the second sealing block 8 to move downwards, the first sealing block 7 is pushed downwards through the fastening rod 104 to move downwards while the second sealing block 8 moves, both sides of the first sealing block 7 and the second sealing block 8 are contacted with the inner wall of the sealing plate 5 through the sealing rings 18 and seal the cavity 4, the small valve core 102 seals the opening 12, when the valve body 1 is closed, the first sealing block 7 and the second sealing block 8 can form primary external sealing and primary internal sealing at the same time, more reliable sealing performance is provided, and when the first sealing block 7 is damaged due to impact, the second sealing block 8 can continue sealing, so that the sealing performance of the valve body 1 is improved;
when the valve body 1 needs fine adjustment, referring to fig. 3, the hand wheel 17 rotates counterclockwise to rotate the valve rod 16, so as to drive the second sealing block 8 and the first sealing block 7 to move upward to stop rotating when the first sealing block 7 breaks away from the sealing of the split pipe 13, at this time, under the action of the upward movement of the first sealing block 7, the small valve core 102 breaks away from the sealing of the opening 12, water flows into the water outlet 3 from the split pipe 13 and is discharged, the small valve core 102 breaks away from the sealing of the opening 12 and is discharged from the split pipe 13, so that small-range flow adjustment can be realized, and the flow control precision of the valve body 1 is improved, and when the flow is adjusted in a large range, referring to fig. 4, the positions of the second sealing block 8, the first sealing block 7 and the small valve core 102 are adjusted counterclockwise by the hand wheel 17, so that the second sealing block 8, the first sealing block 103 and the split pipe 13 are completely broken away from the sealing of the opening 12, the opening 103 and the split pipe 13, and the liquid enters from the water inlet 2 and is discharged from the opening 103 and is discharged from the outlet 3 respectively through the opening 103 and is discharged;
when the valve body 1 is connected with an external pipeline, the sealing element 21 can be inserted into the annular groove 22 formed in the sealing element 21 and sealed by the rubber ring 23, so that the sealing performance of the pipeline connection is ensured, and the leakage of a medium is prevented.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims (10)

1. Double seal for a valve, comprising a valve body (1), characterized in that: the utility model discloses a sealing device for the water inlet of the water heater, including valve body (1), sealing plate (5), sealing seat (6) and sealing plate (5), water inlet (2) and delivery port (3) have been seted up respectively at valve body (1) both ends, cavity (4) have been seted up in just being located the switch-on department of water inlet (2) and delivery port (3) in valve body (1), export (103) have been seted up on cavity (4) both sides fixedly connected with sealing plate (5) right side and with delivery port (3) switch-on department, sealing plate (5) bottom both sides fixedly connected with sealing seat (6), be equipped with first sealing block (7) in cavity (4) and between two sets of sealing plates (5), first sealing block (7) top is through fastening rod (104) sliding connection has second sealing block (8).
2. A dual seal for a valve as defined in claim 1, wherein: the bottom of the first sealing block (7) is fixedly connected with a small valve core (102), a sliding groove (9) is formed in the middle of the second sealing block (8), and a fastening rod (104) at the top of the first sealing block (7) is slidably connected in the sliding groove (9).
3. A dual seal for a valve as defined in claim 1, wherein: the sealing device is characterized in that guide rods (10) are fixedly connected to the top of the first sealing block (7) and located on two sides of the fastening rod (104), the top of the guide rods (10) penetrates through guide grooves (11) formed in the surface of the second sealing block (8) in a sliding mode, springs (101) are sleeved on the guide rods (10), and two ends of the springs (101) are fixedly connected with the first sealing block (7) and the second sealing block (8) respectively.
4. A dual seal for a valve as defined in claim 2, wherein: an opening (12) is formed between the two groups of sealing seats (6), the bottom of the small valve core (102) is matched with the opening (12) to seal, a shunt tube (13) is formed on the right side of the cavity (4) and positioned at the top of the sealing seat (6), and the shunt tube (13) is communicated with the water outlet (3).
5. A dual seal for a valve as defined in claim 1, wherein: the top of the valve body (1) is in threaded connection with a valve cover (15) through a bolt (14).
6. A dual seal for a valve as defined in claim 5, wherein: the top of the second sealing block (8) is rotationally connected with a valve rod (16), the other end of the valve rod (16) rotationally penetrates through the valve cover (15) and extends to the outer side, and a hand wheel (17) is fixedly connected to one end of the valve rod (16) extending to the outer side.
7. A dual seal for a valve as defined in claim 1, wherein: sealing rings (18) are arranged on the surfaces of the first sealing block (7), the second sealing block (8) and the small valve core (102).
8. A double seal valve, characterized in that: the double seal valve comprises the double seal for a valve according to any one of claims 1 to 7.
9. A double seal valve according to claim 8, wherein: the valve further comprises two groups of connecting pipes (19), the connecting pipes (19) are communicated with the valve body (1), and a filter screen (20) is arranged in the connecting pipes (19).
10. A double seal valve according to claim 9, wherein: and each group of connecting pipes (19) is fixedly connected with a sealing piece (21) on the outer side face, an annular groove (22) is formed in the sealing piece (21), and a rubber ring (23) is arranged in the annular groove (22).
CN202310854179.6A 2023-07-13 2023-07-13 Double-sealing element for valve and double-sealing valve Pending CN116877710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310854179.6A CN116877710A (en) 2023-07-13 2023-07-13 Double-sealing element for valve and double-sealing valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310854179.6A CN116877710A (en) 2023-07-13 2023-07-13 Double-sealing element for valve and double-sealing valve

Publications (1)

Publication Number Publication Date
CN116877710A true CN116877710A (en) 2023-10-13

Family

ID=88259940

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310854179.6A Pending CN116877710A (en) 2023-07-13 2023-07-13 Double-sealing element for valve and double-sealing valve

Country Status (1)

Country Link
CN (1) CN116877710A (en)

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