CN106641352B - Dual-purpose valve - Google Patents

Dual-purpose valve Download PDF

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Publication number
CN106641352B
CN106641352B CN201611236670.9A CN201611236670A CN106641352B CN 106641352 B CN106641352 B CN 106641352B CN 201611236670 A CN201611236670 A CN 201611236670A CN 106641352 B CN106641352 B CN 106641352B
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CN
China
Prior art keywords
valve
clack
rod
guide cylinder
connecting rod
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Active
Application number
CN201611236670.9A
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Chinese (zh)
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CN106641352A (en
Inventor
叶跃跃
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.)
Jiangsu Te Sike Valve Manufacturing Co Ltd
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Jiangsu Te Sike Valve Manufacturing Co Ltd
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Application filed by Jiangsu Te Sike Valve Manufacturing Co Ltd filed Critical Jiangsu Te Sike Valve Manufacturing Co Ltd
Priority to CN201611236670.9A priority Critical patent/CN106641352B/en
Publication of CN106641352A publication Critical patent/CN106641352A/en
Application granted granted Critical
Publication of CN106641352B publication Critical patent/CN106641352B/en
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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
    • F16K15/00—Check valves
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated 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
    • F16K1/02—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
    • 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
    • F16K1/44—Details of seats or valve members of double-seat 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
    • F16K1/48—Attaching valve members to screw-spindles
    • 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
    • F16K1/50—Preventing rotation of 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • 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
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • 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

Abstract

The invention discloses a dual-purpose valve which comprises a first valve body, a second valve body, a valve seat, a guide cylinder, a valve rod, a first valve clack, a second valve clack, a small connecting rod and a large connecting rod, wherein the first valve body is connected with the second valve body through the guide cylinder; a cylindrical large cavity is respectively arranged inside the first valve body and the second valve body, and internal threads are arranged on the inner wall of each large cavity; two ends of the guide cylinder are respectively in threaded connection with the large cavities of the two valve bodies. The one end of valve rod is connected with first valve clack, and the other end of valve rod is provided with the valve clack hole, is provided with the valve clack axle on the second valve clack, and the valve clack axle is pegged graft at the valve clack downtheholely, is provided with the spring between second valve clack and the valve rod. When the guide cylinder is rotated by external force, the movable body formed from guide cylinder, small connecting rod, valve rod and valve clack can be reciprocated between two valve bodies, the valve rod has three position states of front, middle and back, and different position states correspond to three functions of stop, conduction and non-return of valve, and one valve has the functions of stop valve and non-return valve.

Description

Dual-purpose valve
Technical Field
The invention relates to the field of valves, in particular to a valve with two functions of a stop valve and a check valve.
Background
The stop valve is a forced sealing type valve, and the working principle of the stop valve is that a valve clack and a valve seat are arranged in a valve body, the valve clack is a movable part, the valve seat is a sealing part, and sealing surfaces are arranged on the valve clack and the valve seat; when the sealing surface of the valve clack is attached to the sealing surface of the valve seat, the stop valve is in a stop state; when the sealing surface of the valve clack is separated from the sealing surface of the valve seat, the stop valve is in a conducting state.
The check valve is a valve which is used for preventing the media from flowing backwards by automatically opening and closing a valve clack depending on the flowing of the media. When the fluid medium in the pipeline flows in the positive direction, the valve clack leaves the valve seat under the action of the fluid, and the check valve is in a conducting state; when the fluid medium in the pipeline reversely flows, the valve clack is restored to the state of being attached to the valve seat under the action of gravity, an elastic part or fluid, and the check valve is changed into a stop state.
In the prior art, the stop valve and the check valve are two different valves, and when the stop valve and the check valve need to be used simultaneously in a fluid pipeline system, the two valves need to be installed, which is very inconvenient.
Disclosure of Invention
The invention aims to provide a valve with functions of a stop valve and a check valve.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a dual-purpose valve comprises a first valve body, a second valve body, a valve seat, a guide cylinder, a valve rod, a first valve clack, a second valve clack, a small connecting rod and a large connecting rod; a large cylindrical cavity and a small cylindrical cavity are respectively arranged in the first valve body and the second valve body, the large cavities of the two valve bodies are communicated with the small cavities, the small cavities are both used for being communicated with a pipeline, and internal threads are arranged on the inner walls of the large cavities; the two ends of the large connecting rod are respectively connected with the first valve body and the second valve body, and the large cavities of the two valve bodies are opposite and concentric with each other.
External threads are arranged at both ends of the guide cylinder, and both ends of the guide cylinder are respectively in threaded connection with the large cavities of the two valve bodies; the first valve seat is arranged at the joint of the small cavity and the large cavity in the first valve body, and a first sealing ring is arranged on the surface of the first valve seat; the second valve seat is arranged at the joint of the small cavity and the large cavity in the second valve body.
One end of the valve rod is connected with a first valve clack which is cylindrical and is positioned in the large cavity of the first valve body; the other end of the valve rod is provided with a valve clack hole, the second valve clack is provided with a valve clack shaft, the valve clack shaft is inserted in the valve clack hole, a spring is arranged between the second valve clack and the valve rod, and the second valve clack is positioned in the large cavity of the second valve body; the valve rod is positioned in the guide cylinder and is concentric with the guide cylinder, and the valve rod is fixedly connected with the guide cylinder through a small connecting rod. .
When external force rotates the guide cylinder, the movable body composed of the guide cylinder, the small connecting rod, the valve rod and the valve clack reciprocates between the two valve bodies (the motion direction is determined by the rotation direction of the external force). When the guide cylinder moves to the extreme position towards the first valve body, the first valve clack is contacted with the first valve seat, the sealing surface of the first valve clack and the sealing surface of the first valve seat form sealing, and the valve is in a stop state. When the guide cylinder moves to the extreme position towards the second valve body, the second valve clack is contacted with the second valve seat, and the valve only has the function of a check valve, namely, the valve is conducted when the fluid flows in the forward direction (the forward direction refers to the direction from the second valve body to the first valve body), and the valve is stopped when the fluid flows in the reverse direction; when the guide cylinder is positioned at the middle position between the first valve body and the second valve body, the first valve clack is separated from the first valve seat, the second valve clack is separated from the second valve seat, and the valve is in a complete conduction state (the valve is conducted when fluid flows in the forward direction or in the reverse direction).
Furthermore, a communication path is arranged inside the valve clack shaft, the end head of the valve clack shaft is communicated with the root of the valve clack shaft, and the communication path keeps the inner cavity of the valve clack hole communicated with the inner cavity of the valve, so that the phenomenon that the movement of the second valve clack is influenced by overlarge local liquid pressure in the valve clack hole is avoided.
Furthermore, a mounting hole is formed in the side wall of the guide cylinder, an annular convex shoulder is arranged at one end of the small connecting rod, the small connecting rod is inserted into the mounting hole in a penetrating mode, the small connecting rod is fastened on the guide cylinder through the annular convex shoulder and a nut, and a second sealing ring is arranged between the nut and the inner wall of the guide cylinder.
Furthermore, the other end of the small connecting rod is connected with the valve rod through a pin shaft.
Furthermore, the one end that has the annular convex shoulder of little connecting rod is provided with the blind hole, and the blind hole is used for rotatory guide cylinder to use, and the user can be convenient rotatory guide cylinder after inserting the blind hole with the bar-shaped instrument.
Further, the valve rod is in pivot connection with the first valve clack, and a bearing is arranged between the valve rod and the first valve clack; after the first valve clack is contacted with the first valve seat, if the guide cylinder is continuously rotated, the valve rod and the first valve clack are rotated, the valve rod only generates axial thrust to the first valve clack and does not generate circumferential torque, and relative rotation between the first valve clack and the first valve seat is avoided.
Furthermore, the end of the first valve clack is in a round table shape, a wedge-shaped sealing inclined plane is arranged on the first valve seat, and the first sealing ring is embedded in the sealing inclined plane.
Has the advantages that: (1) the dual-purpose valve realizes the back-and-forth movement of the valve rod by utilizing the guide cylinder, the valve rod has three position states of front, middle and back, different position states correspond to three functions of stopping, conducting and non-return of the valve, and one valve has the functions of a stop valve and a check valve. (2) The dual-purpose valve is in a regular shape similar to a cylinder, has no parts such as an exposed valve rod, a hand wheel and the like, and is beneficial to packaging, transportation and installation of the valve. (3) The valve rod of the dual-purpose valve of the invention is pivotally connected with the first valve clack, and the valve rod only generates axial thrust but not circumferential torque to the first valve clack, thereby avoiding relative rotation between the first valve clack and the first valve seat. (4) The small connecting rod of the dual-purpose valve is provided with the blind hole, and a user can conveniently rotate the guide cylinder after inserting the rod-shaped tool into the blind hole.
Drawings
Fig. 1 is a schematic structural view (on state) of the dual-purpose valve according to example 1.
Fig. 2 is a schematic structural view (off state) of the dual-purpose valve according to example 1.
Fig. 3 is a schematic structural view (non-return state) of the dual-purpose valve of embodiment 1.
Fig. 4 is a sectional view a-a of fig. 1.
Fig. 5 is a front view of the second flap of the dual-purpose valve of example 1.
Fig. 6 is a sectional view B-B of fig. 5.
Wherein: 1. a first valve body; 2. a second valve body; 3. a first valve seat; 4. a second valve seat; 5. a guide cylinder; 6. a valve stem; 6-1, valve clack hole; 7. a first valve flap; 8. a second valve flap; 8-1, a valve flap shaft; 8-2, a communication path; 9. a small connecting rod; 9-1, an annular shoulder; 9-2, blind holes; 10. a large connecting rod; 11. a first seal ring; 12. a spring; 13. a second seal ring; 14. a third seal ring; 15. a pin shaft; 16. and an O-shaped sealing ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 to 4, the dual-purpose valve of the present embodiment includes a first valve body 1, a second valve body 2, a first valve seat 3, a second valve seat 4, a guide cylinder 5, a valve rod 6, a first valve flap 7, a second valve flap 8, a small link 9, and a large link 10; the inside of first valve body 1 and second valve body 2 respectively is provided with a columniform big cavity and a columniform little cavity, and the respective big cavity and the little cavity intercommunication of two valve bodies, the little cavity accessible flange and the fluid pipeline intercommunication of two valve bodies, and the inner wall of the big cavity of two valve bodies all is provided with the internal thread.
The two ends of the guide cylinder 5 are provided with external threads, the two ends of the guide cylinder 5 are respectively in threaded connection with the large cavities of the two valve bodies, and O-shaped sealing rings 16 are arranged between the guide cylinder 5 and the two valve bodies. Three trunnions are respectively arranged on the peripheries of the first valve body 1 and the second valve body 2, and three large connecting rods 10 respectively penetrate through the trunnions of the two valve bodies to connect the two valve bodies. Nuts are provided on both sides of each trunnion, and the large link 10 and the nuts precisely determine the positional relationship between the first valve body 1 and the second valve body 2. Therefore, when the guide sleeve 5 is rotated by an external force, the guide sleeve 5 will reciprocate between the first valve body 1 and the second valve body 2 (the direction of movement is determined by the direction of rotation of the external force and the direction of rotation of the screw).
The valve rod 6 is positioned inside the guide cylinder 5 and is concentric with the guide cylinder 5, the valve rod 6 is fixedly connected with the guide cylinder 5 through a small connecting rod 9, and two ends of the valve rod 6 are respectively positioned inside the first valve body 1 and the second valve body 2. One end of the valve rod 6, which is positioned in the first valve body 1, is connected with a first valve clack 7, the first valve clack 7 is cylindrical, and the end head of the first valve clack 7 is in a circular truncated cone shape; first disk seat 3 is installed in the first valve body 1 little cavity and the department that meets of big cavity, is provided with wedge-shaped sealed inclined plane on the first disk seat 3, and first sealing washer 11 is embedded in sealed inclined plane.
One end of the valve rod 6, which is positioned in the second valve body 2, is provided with a valve flap hole 6-1, the structure of the second valve flap 8 is shown in fig. 5 and 6, the second valve flap 8 is provided with a valve flap shaft 8-1, a communication path 8-2 is arranged inside the valve flap shaft 8-1, and the communication path 8-2 is communicated with the end of the valve flap shaft 8-1 and the root of the valve flap shaft 8-1. The valve flap shaft 8-1 is inserted in the valve flap hole 6-1, a spring 12 is arranged between the second valve flap 8 and the valve rod 6, and the second valve flap 8 can move back and forth relative to the valve rod 6; under the effect of not receiving the external force, have the clearance between second valve clack 8 and the valve rod 6, after the front atress of second valve clack 8, second valve clack 8 will compress spring 12 and be close to valve rod 6, and the front of second valve clack 8 is provided with second sealing washer 13. The second valve seat 4 is arranged at the joint of the small cavity and the large cavity in the second valve body 2.
When the guide cylinder 5 is rotated by an external force, the movable body formed by the guide cylinder 5, the small link 9, the valve rod 6, the first valve flap 7 and the second valve flap 8 reciprocates (the moving direction is determined by the rotation direction of the external force) between the first valve body 1 and the second valve body 2, and has three position states corresponding to fig. 1, fig. 2 and fig. 3, wherein the three position states correspond to the on state, the off state and the non-return state of the valve respectively.
When the guide sleeve 5 is in the intermediate position as shown in fig. 1, the first valve flap 7 is separated from the first valve seat 3, the second valve flap 8 is separated from the second valve seat 4, and fluid can freely flow through the valve, so that the valve is in a conducting state.
When the guide cylinder 5 is at the left limit position as shown in fig. 2, the first valve flap 7 contacts the first valve seat 3, the sealing surface of the first valve flap 7 and the sealing surface of the first valve seat 3 form a seal, and the valve is in a cut-off state. Normally, after the guide cylinder 5 rotates to the left limit position, the user needs to additionally apply a certain pre-tightening force to the guide cylinder 5 to realize the forced sealing between the first valve flap 7 and the first valve seat 3. Therefore, in the embodiment, the valve rod 6 and the first valve clack 7 are designed to be in pivot connection, and a bearing is arranged at the connection position of the valve rod 6 and the first valve clack 7; after the first valve clack 7 is contacted with the first valve seat 3, if the guide cylinder 5 is continuously rotated, the valve rod 6 and the first valve clack 7 are rotated, the valve rod 6 only generates axial thrust to the first valve clack 7 without generating circumferential torque, and the relative rotation between the first valve clack 7 and the first valve seat 3 is avoided, so that the sealing surface of the first valve clack 7 and the first valve seat 3 is protected.
When the guide sleeve 5 is at the right extreme position as shown in fig. 3, the second valve flap 8 contacts the second valve seat 4, and the valve is in a return state, i.e. the valve is open when the fluid flows in the forward direction (the forward direction is the direction from the second valve body 2 to the first valve body 1) and the valve is closed when the fluid flows in the reverse direction.
The guide cylinder 5 and the valve rod 6 of the dual-purpose valve of the embodiment are connected by six small connecting rods 9 uniformly arranged along the circumferential direction of the valve rod 6, and the included angle between any two adjacent small connecting rods 9 is 60 degrees. The small link 9 is a round rod having an annular shoulder 9-1 at one end, and for convenience, the end of the small link 9 having the annular shoulder 9-1 is referred to as an outer end and the other end as an inner end. The middle part of the outer end of the small connecting rod 9 is provided with a blind hole 9-2 along the axial direction of the small connecting rod 9, external threads are processed near the outer end of the small connecting rod 9, and the middle part of the inner end of the small connecting rod 9 is provided with a pin shaft hole along the axial direction of the small connecting rod 9.
Six mounting holes are formed in the side wall of the guide cylinder 5, six small connecting rods 9 are inserted into the mounting holes respectively, the diameter of an annular convex shoulder 9-1 of each small connecting rod 9 is larger than that of the mounting hole, a nut is sleeved on each small connecting rod 9, the small connecting rods 9 are fastened on the guide cylinder 5 through the annular convex shoulders 9-1 and the nut, and a third sealing ring 14 is arranged between the nut and the inner wall of the guide cylinder 5. Six uniform radial pin shaft holes are formed in the middle of the valve rod 6, the small connecting rod 9 is inserted into the mounting hole of the guide cylinder 5, the two ends of the pin shaft 15 are respectively inserted into the pin shaft holes of the small connecting rod 9 and the valve rod 6, and finally the guide cylinder 5, the small connecting rod 9 and the valve rod 6 can be assembled by screwing the nut on the small connecting rod 9.
After the dual-purpose valve is assembled, the middle section of the guide cylinder 5 and the outer ends of the six small connecting rods 9 are exposed outside, and a user can operate the guide cylinder 5 to rotate by inserting a rod-shaped tool into the blind hole 9-2 at the outer end of each small connecting rod 9, so that the switching of the stop state, the conduction state and the non-return state of the valve is realized.
Although the embodiments of the present invention have been described in the specification, these embodiments are merely provided as a hint, and should not limit the scope of the present invention. Various omissions, substitutions, and changes may be made without departing from the spirit of the invention and are intended to be within the scope of the invention.

Claims (7)

1. A dual-purpose valve, its characterized in that: the valve comprises a first valve body, a second valve body, a first valve seat, a second valve seat, a guide cylinder, a valve rod, a first valve clack, a second valve clack, a small connecting rod and a large connecting rod;
a large cylindrical cavity and a small cylindrical cavity are respectively arranged in the first valve body and the second valve body, the large cavities of the two valve bodies are communicated with the small cavities, the small cavities are both used for being communicated with a pipeline, and internal threads are arranged on the inner walls of the large cavities; two ends of the large connecting rod are respectively connected with the first valve body and the second valve body, and large cavities of the two valve bodies are opposite and concentric with each other;
external threads are arranged at both ends of the guide cylinder, and both ends of the guide cylinder are respectively in threaded connection with the large cavities of the two valve bodies;
the first valve seat is arranged at the joint of the small cavity and the large cavity in the first valve body, and a first sealing ring is arranged on the surface of the first valve seat; the second valve seat is arranged at the joint of the small cavity and the large cavity in the second valve body;
one end of the valve rod is connected with a first valve clack which is cylindrical and is positioned in the large cavity of the first valve body; the other end of the valve rod is provided with a valve clack hole, the second valve clack is provided with a valve clack shaft, the valve clack shaft is inserted in the valve clack hole, a spring is arranged between the second valve clack and the valve rod, and the second valve clack is positioned in the large cavity of the second valve body; the valve rod is positioned in the guide cylinder and is concentric with the guide cylinder, and the valve rod is fixedly connected with the guide cylinder through a small connecting rod.
2. The dual-purpose valve of claim 1, wherein: the valve flap shaft is internally provided with a communication path which is communicated with the end head of the valve flap shaft and the root part of the valve flap shaft.
3. The dual-purpose valve of claim 1, wherein: the side wall of the guide cylinder is provided with a mounting hole, one end of the small connecting rod is provided with an annular convex shoulder, the small connecting rod is inserted into the mounting hole, the small connecting rod is fastened on the guide cylinder by the annular convex shoulder and a nut, and a second sealing ring is arranged between the nut and the inner wall of the guide cylinder.
4. The dual-purpose valve of claim 3, wherein: the other end of the small connecting rod is connected with the valve rod through a pin shaft.
5. The dual-purpose valve of claim 4, wherein: and a blind hole is formed in one end, provided with an annular convex shoulder, of the small connecting rod.
6. The dual-purpose valve of claim 1, wherein: the valve rod is connected with the first valve clack through a pivot, and a bearing is arranged between the valve rod and the first valve clack.
7. The dual-purpose valve of claim 6, wherein: the end of the first valve clack is in a round table shape, a wedge-shaped sealing inclined plane is arranged on the first valve seat, and the first sealing ring is embedded in the sealing inclined plane.
CN201611236670.9A 2016-12-28 2016-12-28 Dual-purpose valve Active CN106641352B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611236670.9A CN106641352B (en) 2016-12-28 2016-12-28 Dual-purpose valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611236670.9A CN106641352B (en) 2016-12-28 2016-12-28 Dual-purpose valve

Publications (2)

Publication Number Publication Date
CN106641352A CN106641352A (en) 2017-05-10
CN106641352B true CN106641352B (en) 2020-02-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611236670.9A Active CN106641352B (en) 2016-12-28 2016-12-28 Dual-purpose valve

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112361065B (en) * 2020-12-05 2021-07-30 凯斯通阀门有限公司 Double-effect control valve
CN113217678B (en) * 2021-05-21 2023-08-25 浙江奥德华科技股份有限公司 High-stability valve for municipal water outlet and use method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL93079C (en) * 1953-05-18 1900-01-01
CN102072342B (en) * 2010-12-04 2012-07-04 福建高中压阀门科技有限公司 Coaxial difference path device with double check valve clacks
CN102359626B (en) * 2011-10-08 2012-12-19 西安迈象能源科技有限公司 Air brick protective valve
CN202252173U (en) * 2011-10-17 2012-05-30 陈银周 Antifouling isolating valve with low resisting force
CN206347160U (en) * 2016-12-28 2017-07-21 江苏特思克阀门制造有限公司 A kind of Two purpose valve

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