WO2003046418A1 - Vanne d'arret inverse - Google Patents

Vanne d'arret inverse Download PDF

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Publication number
WO2003046418A1
WO2003046418A1 PCT/CN2002/000848 CN0200848W WO03046418A1 WO 2003046418 A1 WO2003046418 A1 WO 2003046418A1 CN 0200848 W CN0200848 W CN 0200848W WO 03046418 A1 WO03046418 A1 WO 03046418A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
shut
reverse
stem
disc
Prior art date
Application number
PCT/CN2002/000848
Other languages
English (en)
Chinese (zh)
Inventor
Hongfu Wang
Original Assignee
Hongfu Wang
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
Priority claimed from CN 01140126 external-priority patent/CN1380506A/zh
Priority claimed from CN 02100309 external-priority patent/CN1379199A/zh
Application filed by Hongfu Wang filed Critical Hongfu Wang
Priority to AU2002354329A priority Critical patent/AU2002354329A1/en
Publication of WO2003046418A1 publication Critical patent/WO2003046418A1/fr

Links

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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/52—Mechanical actuating means with crank, eccentric, or cam
    • F16K31/528—Mechanical actuating means with crank, eccentric, or cam with pin and slot
    • 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
    • F16K1/04—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 with a cut-off member rigid with the spindle, e.g. main 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
    • 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
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • 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
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element

Definitions

  • the invention relates to a shut-off valve, in particular to a reverse opening and closing shut-off valve. It can be widely used to transport various liquids or gases in various fields of production and life, and is especially suitable for terminals and large-caliber, medium-, high- and ultra-high pressure occasions for pipelines of various media. BACKGROUND OF THE INVENTION
  • the globe valve has the advantages of reliable sealing performance, no need to disassemble the valve body for maintenance, convenient and labor-saving, etc. Therefore, it was once the most widely used valve in the field of production and life.
  • Many throttle valves valves that can roughly control the flow of the medium
  • regulating valves valves that strictly control the parameters such as the pressure and flow of the medium
  • the existing cut-off valve and the throttle and regulating valve made from the improved cut-off valve have a structure in which the valve disc is above the septum and the valve seat, and the valve disc rises and opens, and it descends and closes. Lifting is accomplished by rotating the valve stem on the valve cover for multiple turns.
  • shut-off and regulating or throttle valves have been individually designed and used.
  • a valve that functions as a cut-off seal needs to be installed.
  • throttling and adjustment are needed. Because it is inconvenient to install two valves, only one valve is used, causing unnecessary loss of media.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art described above, and provide an excellent cut-off sealing performance, as well as good adjustment or throttling. Flow performance, simple structure, low cost, rapid opening and closing , Long service life, applicable to a wide range of reverse on-off shut-off valves.
  • the present invention adopts the following technical solutions to solve the above technical problems.
  • the reverse on-off and shut-off valve provided according to the present invention includes a valve cover, a valve body, a valve seat, a valve disc, a valve stem, and a valve stem lifting mechanism.
  • a straight pipe portion with a lower end extending at the lower portion of the valve body extends.
  • a cover plate is fixedly connected to the valve seat; the valve seat is arranged in the middle compartment of the valve body; the valve disc is arranged below the valve seat and is fixedly connected to the lower end surface of the valve stem; the valve stem lifting mechanism is a sliding lift The mechanism closes the valve when the valve disc is lifted up against the sealing surface of the valve seat, and the valve is fully opened when the valve disc is lowered into the straight pipe part at the lower end of the valve body, and the medium enters the valve body from below the valve seat.
  • the present invention can also adopt the following technical measures to further solve the above technical problems.
  • a seal is provided between the valve disc and the lower end surface of the valve stem.
  • the lower part of the valve stem protruding into the valve seat is a cone capable of controlling the pressure and flow of the medium.
  • valve seat has a circular annular shoulder at one end below the spacer layer in the valve body.
  • valve disc is a disc-shaped part having a circular boss.
  • the valve rod sliding lifting mechanism includes two thrust ball bearings installed on the upper part of the bonnet bracket and one between the two bearings, and has a hand screwed to the upper end of the valve rod. Wheel consisting of lifting nuts.
  • the valve rod sliding lifting mechanism is composed of a compression spring mounted on the valve cover, and a pressure cylinder covering the spring and fixed on the upper end of the valve rod.
  • the valve stem sliding lifting mechanism comprises a compression spring mounted on the valve cover, and a cylinder provided on the valve cover and sheathed outside the compression spring, which can lift the cylinder wall by clamping the valve stem.
  • the upper and lower sleeves are provided with two spiral grooves symmetrically and can rotate along two pins installed on the valve cover.
  • the valve rod sliding lifting mechanism comprises a compression spring mounted on the valve cover, a compression cylinder surrounding the compression spring and fixed on the upper end of the valve rod, and a tie rod and a pedal connected thereto. Board composition.
  • the valve stem sliding lifting mechanism is formed by a compression spring mounted on the valve cover, a pressure cylinder fixed on the valve stem, and a pressure cylinder installed on the valve cylinder and integrated with the valve cover. It consists of a hydraulic jack between the square I-brackets.
  • the present invention can also use the following another technical solution to solve the technical problem.
  • the reverse on-off and shut-off valve includes a valve cover, an angle valve body, a valve disc, a valve stem, and a valve stem lifting mechanism.
  • the valve disc is disposed below the interlayer of the angle valve body, and communicates with the valve body.
  • the lower end surface of the valve stem forms a whole;
  • the valve stem lifting mechanism is a sliding lifting mechanism, which closes the valve when the valve disc is raised against the sealing surface of the valve seat, and the valve is fully opened when the valve disc is lowered into the straight pipe at the lower end of the valve body, and the medium is removed from the valve. Enter the valve body under the seat.
  • valve stem sliding lifting mechanism is a sleeve that is sleeved on the upper end of the valve stem and lifts the valve stem and rotates on the external thread on the valve cover integrated with the angle valve body. Cylindrical lifting nut.
  • the present invention replaces the valve disc under the valve seat, and allows the medium to enter the valve cavity from below the valve seat.
  • the direction of the force of the shield is the same as the direction of the compulsory pressure to maintain the seal. That is, the force of the medium is completely converted into the compulsory pressure on the valve disc.
  • the force area of the valve disc of the present invention is much larger than the existing globe valve, in most cases, the pressure of the medium is sufficient to maintain the valve seal without relying on it. When the stem is applied with additional pressure, it becomes a full self-sealing valve.
  • the dyke is gentle, so the invention not only seals reliably and can prevent accidental internal leakage (the valve body The leakage from the inlet end to the outlet end), and the pressure loss to the gasket is small, and the valve has a long service life.
  • the invention used at the end of a pipeline is a veritable leak-free valve.
  • the vulnerable parts are greatly reduced, which obviously reduces the cost of anticorrosive treatment and improves the valve.
  • Advantageous life because only the inlet pipe section of the valve body cavity and the lower end face of the valve disc are immersed in the corrosive media for a long time, the vulnerable parts are greatly reduced, which obviously reduces the cost of anticorrosive treatment and improves the valve. Advantageous life.
  • the sealing surface of the valve seat in the present invention is a shoulder-shaped plane, and some valve discs are disc-shaped parts with a ring-shaped boss around them. This shape and structure can ensure that the sealing surface of the valve disc can not be directly eroded by the medium, and can extend the service life of the wide door.
  • the cone body is manufactured at the corresponding part of the valve stem. Gap between cylindrical surfaces to control flow and pressure. In this way, the cut-off seal of the valve depends on the flat seal pair, and the adjustment of pressure and flow is accomplished by adjusting the gap between the cylindrical surface of the inner hole of the valve seat and the cone on the valve stem. The two work independently without interference. Therefore, the valve's cut-off seal and regulating throttling functions are very superior, and the valve has a long service life.
  • the invention adopts six types of valve stem sliding lifting mechanisms with non-rotating valve stems, which not only greatly reduces the wear of the valve stem and sealing packing, but also reduces the wear of the valve flap or seal pad, which prolongs the valve life and reduces the maintenance workload.
  • the valve is closed quickly and automatically with a compression spring automatic switch structure. None leak, save the media being transported.
  • the hand pressing, lever and spiral groove opening structure simplify the multi-turn rotating opening structure into vertical pressing or rotary opening within half a turn, making the operation simple and convenient.
  • the pedal opening mechanism can be opened without hands and used in public places such as bathrooms, hospitals, station squares, etc. It has the advantages of saving investment, saving water, preventing disease transmission, convenient use and maintenance, and long life.
  • the hydraulic jack opening structure is used in large-caliber, medium, high and ultra-high pressure applications. It has a simple structure, easy operation and labor saving, small valve size and mass, small footprint, low investment, no electricity, wide application, and many other advantages. Both economic and social benefits are very significant.
  • the present invention has significant improvements in structure and function in areas where the space for technological development is limited, and has made great progress in technology, and has produced useful and practical Effect, and indeed has an enhanced effect, so that it is more suitable for practical use, and is a new, progressive, and practical new invention.
  • FIG. 1 is a schematic diagram of a basic structure of the present invention.
  • FIG. 2 is a schematic structural diagram of an angle globe valve with a simpler structure according to the present invention.
  • FIG. 3 is a schematic structural diagram of the present invention with a manual pressure opening and automatic closing.
  • Fig. 4 is a structural schematic diagram of the present invention with a spiral groove opened and closed.
  • Fig. 5 is a schematic structural diagram of the present invention with a foot-opening automatic switch.
  • Fig. 6 is a schematic structural diagram of the present invention when the hydraulic jack opens and closes automatically.
  • valve seat 6 gasket 7, valve disc 8, cover plate
  • valve stem 10 Key 11
  • bearing 12 cylindrical lifting nut
  • Foot pedal 20 Hydraulic jack 21. Valve cover with frame bracket
  • the valve body 4 of the present invention extends a straight pipe portion with a lower end opening from the lower end of the existing shut-off valve, and a cover plate 8 is installed on the pipe mouth.
  • the function of adding this straight pipe portion is for the valve seat 5 and the valve.
  • the flap 7 and the valve stem 9 are installed from below to leave a passageway, and at the same time, there is a space for the flap to drop when the valve is opened, so as to prevent the flap from affecting the shield flow.
  • a ring-shaped valve seat 5 with a shoulder is mounted on the valve body 4 from the bottom up, and the valve disc 7 and an additional gasket 6 if necessary are fixed to the valve stem 9 to fix the assembly.
  • FIG. 1 shows the closed state of the valve.
  • the valve When the valve is opened, turning the handwheel 1 drives the valve stem 9 down, the valve gradually opens, and the valve flap 7 is lowered into the straight pipe part at the lower end of the valve body 4, which does not affect the valve fully open when the medium flows.
  • the handwheel 1 reverses the valve to close.
  • the present invention has a simpler angle structure.
  • the small-sized valve has a small lifting force, so the handwheel, bearing, key and valve cover are omitted. Instead, a cylindrical lifting nut 12 can be rotated on the valve body 4 to hold the valve stem up and down.
  • the valve stem 9 and the valve disc 7 are integrated to form a valve stem 9 with a valve disc.
  • the valve disc has no protection ring, and the valve seat is machined directly on the valve body. Due to the special needs of the angle valve, the valve body 4 is changed to a three-way tube.
  • Other structures, assembly methods, and working principles are all the same as those shown in Figure 1. the same.
  • This simplified structure of the reverse opening and closing shut-off valve sliding lift mechanism has a thread on the outer periphery of the valve body.
  • the thread size of the thread is more than double that of the existing shut-off valve, and the external thread can be lubricated and rust-proof, so it is used for It replaces the existing small-scale shut-off valve commonly known as faucet, which can not only prevent accidental leakage, safety and water saving, but also can last 5 times or even 10 times longer than the existing faucet, so the economic and social benefits are very significant.
  • a compression spring 15 is installed on the valve cover 3, the compression cylinder 14 is sleeved on the compression spring, and the valve stem 9 is fixed with a nut.
  • the function of the pressure cylinder 14 is to transmit pressure to the valve stem and cover the compression spring, so that the product is beautiful and applicable.
  • press the cylinder 14 by hand and the cylinder 14 can slide the valve stem downward.
  • the extension tension of the compression spring 15 will automatically close the valve even if the valve stem rises.
  • Gasket 6, valve disc 7 is fixed to the valve stem with a screw. This structure makes it easy to replace the gasket, which can double the valve's service life.
  • the spiral groove opening and closing type of the present invention has an opening structure in which two spiral rising grooves are symmetrically opened back and forth on a sleeve capable of lifting a valve rod to form a lifting sleeve 16 with a spiral groove.
  • Two screw holes are machined at appropriate positions of the valve cover 3.
  • the lifting sleeve 16 with a spiral groove is pressed to rotate clockwise, so that the lifting sleeve 16 with a spiral groove is lowered to the highest point of the spiral groove, and the wide door is opened to the maximum flow rate.
  • the lifting sleeve 16 with a spiral groove is stopped when it is stopped in a semicircular groove in the middle position. This valve simplifies basic multi-turn on-off to half-turn on-off.
  • the present invention of a pedal-opening and automatic-closing type has most of the same structure as the basic type shown in FIG. 1 and the manual-pressing automatic-closing type described in FIG. 3, except that the pressure cylinder 14 and the tie rod are different.
  • 18 Connected to foot pedal 19, the pedal valve of human foot is opened, it will be automatically shut down.
  • Such valves are used in bathrooms, and public places such as hospitals, entertainment venues, institutions, factories, mines, and stations, which can effectively eliminate the phenomenon of often forgetting to close and inadequately closing the valve, which wastes a lot of water, and can reduce disease transmission. ⁇
  • the hydraulic jack opening and closing type of the present invention has most of the same structure as the basic type shown in FIG. 1 and the manual pressure opening and closing type shown in FIG. 3.
  • the valve cover is a
  • a hydraulic jack 20 is installed between the upper frame of the frame of the valve cover 21 with the frame bracket and the pressure cylinder 14.
  • the pressure cylinder can be lowered and the valve is opened. Open the pressure relief hole of the hydraulic jack 20 and the compression spring 15 rebounds to force the cylinder to rise and close the valve.
  • the area of the valve disc in the present invention is more than 50% larger than that of the existing cut-off valve, and the cut-off pressure on the valve disc when closed is more than 50% greater than that of the existing cut-off valve.
  • This force is the main resistance to be overcome when opening the valve.
  • the opening of the present invention is much more difficult.
  • the current electric opening method requires the use of a motor with a much larger power and a corresponding large-size reducer, which increases the volume and weight of the whole machine, increases investment, and increases the use and maintenance costs. .
  • it is difficult to open, but easy to close (the valve only needs to overcome the friction between the valve disc and the packing and the gravity of the valve disc) and the characteristics of the valve disc lowered to open.
  • the hydraulic jack is used to open, and the compression spring rebounds automatically to close.
  • the structure can make the whole machine simple in structure, small in size and mass, easy to operate and use no electricity, so its application value and economic and social benefits are very significant.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

La présente invention concerne une vanne d'arrêt inverse présentant des propriétés supérieures d'arrêt, d'obturation, de réglage ou de réduction. Par rapport aux modèles existants de vanne d'arrêt, on a ajouté dans le bas du corps (4) un segment de conduit droit ouvert dans le bas, le clapet (7) venant sous le siège (5). Ainsi, le fluide pénètre dans le corps de banne de pas le dessous du siège. La partie inférieure du siège peut comporter un épaulement. Un cordon circulaire peut garnir le pourtour du clapet pour le protéger. La tige (9) se termine par un corps tronconique de régulation de la pression et du débit. Cette vanne admet six types de mécanismes de coulissement vertical empêchant la rotation de la tige. On arrive ainsi à limiter l'usure des pièces concernées et à prolonger la durée de vie, et ce, tout en satisfaisant aux normes de pression de la main, de pose du pied, d'ouverture rapide hydraulique et de fermeture rapide. Avec cette construction, la vanne de l'invention présente l'avantage d'être bon marché, de ne pas fuir, d'économiser l'eau et la matière, de ne pas consommer d'électricité, de se fermer et de s'ouvrir rapidement, de s'installer et de s'entretenir facilement, de correspondre à de nombreux cas d'emploi, tout en étant économiquement et socialement attractive.
PCT/CN2002/000848 2001-11-26 2002-11-26 Vanne d'arret inverse WO2003046418A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002354329A AU2002354329A1 (en) 2001-11-26 2002-11-26 A reverse cut-off valve

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN01140126.5 2001-11-26
CN 01140126 CN1380506A (zh) 2001-11-26 2001-11-26 反向启闭截止阀
CN 02100309 CN1379199A (zh) 2002-01-07 2002-01-07 反向启闭截止调节或节流两用阀
CN02100309.2 2002-01-07

Publications (1)

Publication Number Publication Date
WO2003046418A1 true WO2003046418A1 (fr) 2003-06-05

Family

ID=25740620

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2002/000848 WO2003046418A1 (fr) 2001-11-26 2002-11-26 Vanne d'arret inverse

Country Status (2)

Country Link
AU (1) AU2002354329A1 (fr)
WO (1) WO2003046418A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1424626A (en) * 1973-06-13 1976-02-11 Hepworth Plastics Ltd Taps
CN2039778U (zh) * 1988-10-09 1989-06-21 万卓非 压式锥塞水龙头
CN2047740U (zh) * 1989-05-15 1989-11-15 王志奇 反压式自来水龙头
CN2101800U (zh) * 1991-07-30 1992-04-15 任长林 新型合力式截止阀
CN2190200Y (zh) * 1994-01-15 1995-02-22 张赵来 节水型水龙头
CN2240650Y (zh) * 1995-06-20 1996-11-20 高文秀 双密封角式截止阀
CN2244651Y (zh) * 1995-09-22 1997-01-08 黄水连 弹簧自封式水龙头

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1424626A (en) * 1973-06-13 1976-02-11 Hepworth Plastics Ltd Taps
CN2039778U (zh) * 1988-10-09 1989-06-21 万卓非 压式锥塞水龙头
CN2047740U (zh) * 1989-05-15 1989-11-15 王志奇 反压式自来水龙头
CN2101800U (zh) * 1991-07-30 1992-04-15 任长林 新型合力式截止阀
CN2190200Y (zh) * 1994-01-15 1995-02-22 张赵来 节水型水龙头
CN2240650Y (zh) * 1995-06-20 1996-11-20 高文秀 双密封角式截止阀
CN2244651Y (zh) * 1995-09-22 1997-01-08 黄水连 弹簧自封式水龙头

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