CN107842618B - Hydraulic transmission bidirectional sealing axial flow type stop valve - Google Patents
Hydraulic transmission bidirectional sealing axial flow type stop valve Download PDFInfo
- Publication number
- CN107842618B CN107842618B CN201711263209.7A CN201711263209A CN107842618B CN 107842618 B CN107842618 B CN 107842618B CN 201711263209 A CN201711263209 A CN 201711263209A CN 107842618 B CN107842618 B CN 107842618B
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- CN
- China
- Prior art keywords
- piston
- valve
- screw rod
- cylinder
- axial flow
- 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.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 35
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 239000008213 purified water Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- F16K1/32—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
- F16K1/44—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
- 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
- F16K31/504—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating means being rotable, rising, and having internal threads which co-operate with threads on the outside of the valve body
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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
- 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)
- Mechanically-Actuated Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention provides a hydraulic transmission bidirectional sealing axial flow type stop valve, which comprises a hand wheel, a screw rod, a piston and a valve body, wherein the top of the valve body is provided with a cylinder body, a cylinder seat is arranged in the valve body, the screw rod is movably arranged in the cylinder body, and the hand wheel is fixedly arranged at the top of the screw rod; the piston is arranged at the bottom end of the screw rod, closely attached to the inner wall of the cylinder body and capable of moving up and down along with the screw rod; a right piston valve core and a left piston valve core capable of moving bidirectionally are arranged in the cylinder seat, a closed space formed by the left piston valve core, the right piston valve core and the cylinder seat is communicated with a closed space formed by the piston and the cylinder body, and a hydraulic medium is arranged in the communicated closed space; the left and right ends of the valve body are respectively provided with a valve seat, the left and right piston valve cores are abutted with the valve seats, the stop valve can realize bidirectional interception of liquid medium, and the no-bend design of the invention has small flow resistance of the liquid medium.
Description
Technical Field
The invention belongs to the technical field of stop valves, and particularly relates to a hydraulic transmission bidirectional sealing axial flow stop valve.
Background
The stop valve is used as a strong flow stopping sealing valve and is mainly applied to control the interception of liquid medium in a pipeline, and when the valve is closed, pressure is applied to the valve clack so as to prevent leakage of a sealing surface; the existing stop valve usually adopts a hand wheel and a screw rod transmission mode to open and close the valve, namely, the hand wheel is rotated to drive the valve rod nut to do rotary motion so as to enable the valve rod to move up and down to realize the opening and closing of the valve.
Disclosure of Invention
In view of the above, the present invention aims to provide a hydraulic transmission bidirectional sealing axial flow type stop valve, which solves the technical problems existing in the prior art, realizes bidirectional interception, reduces medium flow resistance, improves reliability of the stop valve, improves convenience of valve control, and realizes bidirectional sealing to enable the valve to be more convenient to install and use.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
The hydraulic transmission bidirectional sealing axial flow type stop valve comprises a hand wheel, a screw rod, a piston and a valve body, wherein the top of the valve body is provided with a cylinder body, a cylinder seat is arranged in the valve body, the screw rod is movably arranged in the cylinder body, and the hand wheel is fixedly arranged at the top of the screw rod; the piston is arranged at the bottom end of the screw rod, closely attached to the inner wall of the cylinder body and capable of moving up and down along with the screw rod; a right piston valve core and a left piston valve core capable of moving bidirectionally are arranged in the cylinder seat, a closed space formed by the left piston valve core, the right piston valve core and the cylinder seat is communicated with a closed space formed by the piston and the cylinder body, and a hydraulic medium is arranged in the communicated closed space; valve seats are arranged at the left end and the right end of the valve body respectively, and the left piston valve core and the right piston valve core are abutted with the valve seats and used for limiting the limit positions of the two outer ends of the left piston valve core and the right piston valve core;
Further, the screw rod is meshed in the screw rod nut in a threaded manner, and the screw rod nut is locked on the cylinder body through a screw rod nut locking bolt;
Furthermore, a sliding thrust bearing is further arranged at the bottom end of the screw rod, the screw rod transmits force to the piston through the sliding thrust bearing, and the screw rod and the piston can realize low-friction rotation, so that the screw rod can vertically move up and down to drive the piston to vertically move only up and down, and the piston and the inner wall of the cylinder body do not relatively rotate;
furthermore, in order to improve the sealing performance of each component in the cylinder body, a plurality of groups of O-shaped sealing rings are arranged between the piston and the screw rod and between the piston and the inner wall of the cylinder body;
furthermore, a first sealing ring is arranged between the left and right piston valve cores and the valve seat, so that the sealing and stopping effects are better when the left and right piston valve cores are abutted against the valve seat;
Further, a second sealing ring is arranged between the left and right piston valve cores and the cylinder seat, so that the sealing performance between the left and right piston valve cores and the cylinder seat is improved, and the reliability and the sealing performance of the reciprocating motion of the left and right pistons are improved;
furthermore, a piston locking nut used for locking and fixing is arranged outside the sliding thrust bearing, and the piston locking nut and the piston can realize low-friction rotation;
further, the hydraulic medium is hydraulic oil or purified water; when the piston is used, the water is used as the pure water as the hydraulic medium according to the corresponding selection of the pipeline medium, so that scale in the piston cavity is prevented; if the pipeline medium is oil, hydraulic oil can be used as the hydraulic medium;
Compared with the prior art, the hydraulic transmission bidirectional sealing axial flow type stop valve has the following advantages:
the stop valve can realize bidirectional interception, and the design of no-bending channel has small flow resistance to liquid medium.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 is a cross-sectional view of a hydraulically driven two-way seal axial flow shut-off valve according to an embodiment of the present invention.
Reference numerals illustrate:
1-a hand wheel; 2-a lead screw; 3-a lead screw nut; 4-a lead screw nut locking bolt; 5-sliding thrust bearings; 6-a piston; 7-O-shaped sealing rings; 8-a piston lock nut; 9-a valve body; 91-cylinder; 91-a cylinder base; 10-valve seat; 11-a first sealing ring; 12-a right piston valve core; 13-a second sealing ring; 14-left piston valve core.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in 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 configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1, a hydraulic transmission bidirectional sealing axial flow stop valve comprises a hand wheel 1, a screw rod 2, a piston 6 and a valve body 9, wherein the top of the valve body 9 is provided with a cylinder body 91, a cylinder seat 91 is arranged in the valve body, the screw rod 2 is movably arranged in the cylinder body 91, and the hand wheel 1 is fixedly arranged at the top of the screw rod 2; the piston 6 is arranged at the bottom end of the screw rod 2, and the piston 6 is tightly attached to the inner wall of the cylinder 91 and can reciprocate up and down along with the screw rod 2; a right piston valve core 12 and a left piston valve core 14 which can move bidirectionally are arranged in the cylinder seat 91, a closed space formed by the left and right piston valve cores and the cylinder seat 91 is communicated with a closed space formed by the piston 6 and the cylinder 91, and a hydraulic medium is arranged in the communicated closed space; valve seats 10 are respectively arranged at the left end and the right end of the valve body 9, and the left piston valve core and the right piston valve core are abutted with the valve seats 10 and used for limiting the limit positions of the two outer ends of the left piston valve core and the right piston valve core; wherein the screw rod 2 is engaged in the screw rod nut 3 in a threaded manner, and the screw rod nut 3 is tightly locked on the cylinder 91 through the screw rod nut locking bolt 4; the bottom end of the screw rod 2 is also provided with a sliding thrust bearing 5, the screw rod 2 transmits force to the piston 6 through the sliding thrust bearing 5, and the screw rod 2 and the piston 6 can realize low-friction rotation; so that the up-and-down motion of the screw rod 2 in the vertical direction can be realized to drive the piston 6 to do up-and-down reciprocating motion in the vertical direction, and the piston 6 and the inner wall of the cylinder 91 do not relatively rotate; in order to improve the sealing performance of each component in the cylinder 91, a plurality of groups of O-shaped sealing rings 7 are arranged between the piston 6 and the screw rod 2 and between the piston 6 and the inner wall of the cylinder 91; the first sealing rings 11 are arranged between the left and right piston valve cores and the valve seat 10, so that the sealing and stopping effects are better when the left and right piston valve cores are abutted against the valve seat; wherein, a second sealing ring 13 is arranged between the left and right piston valve cores and the cylinder seat 92, so that the sealing performance between the left and right piston valve cores and the cylinder seat 92 is improved, and the reliability and the sealing performance of the left and right piston reciprocating motion are improved; wherein a piston locking nut 8 for locking and fixing is arranged outside the sliding thrust bearing 5; the hydraulic medium is hydraulic oil or purified water, and is correspondingly selected according to the pipeline medium; when the pipeline is water, pure water is used as a hydraulic medium to prevent scale from forming in the piston cavity; if the pipeline medium is oil, hydraulic oil can be used as the hydraulic medium;
According to the invention, the torque of the screw is converted into axial pushing and pulling force of the screw through the screw nut to drive the piston to reciprocate, and the left piston valve core and the right piston valve core are driven to reciprocate correspondingly through hydraulic transmission, so that bidirectional sealing and opening and closing are realized; the left valve seat and the right valve seat are mounted and pressed by the pipeline flange to realize bidirectional sealing; when the valve is used for a blind end of a pipeline, the flange is arranged at the other end of the valve, so that good pressing of the valve seat is realized;
The stop valve realizes the bidirectional interception of the fluid medium, the design structure without bend has small flow resistance to the fluid medium, and the bidirectional sealing piston is controlled in an axial flow mode, so that the operation control is more convenient and labor-saving, the opening and closing are sensitive and reliable, and the service life is longer.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. The hydraulic transmission bidirectional sealing axial flow type stop valve is characterized by comprising a hand wheel, a screw rod, a piston and a valve body, wherein the top of the valve body is provided with a cylinder body, a cylinder seat is arranged in the valve body, the screw rod is movably arranged in the cylinder body, and the hand wheel is fixedly arranged at the top of the screw rod; the piston is arranged at the bottom end of the screw rod, closely attached to the inner wall of the cylinder body and capable of moving up and down along with the screw rod; a right piston valve core and a left piston valve core capable of moving bidirectionally are arranged in the cylinder seat, a closed space formed by the left piston valve core, the right piston valve core and the cylinder seat is communicated with a closed space formed by the piston and the cylinder body, and a hydraulic medium is arranged in the communicated closed space; the left end and the right end of the valve body are respectively provided with a valve seat, and the left piston valve core and the right piston valve core are in butt joint with the valve seats;
The screw is meshed in the screw nut in a threaded manner, and the screw nut is locked on the cylinder body through a screw nut locking bolt;
and a sliding thrust bearing is further arranged at the bottom end of the screw rod, and the screw rod transmits force to the piston through the sliding thrust bearing.
2. The hydraulic transmission bidirectional sealing axial flow stop valve according to claim 1, wherein a plurality of groups of O-shaped sealing rings are arranged between the piston and the screw rod and between the piston and the inner wall of the cylinder body.
3. The hydraulically driven, bi-directional sealed axial flow shut off valve of claim 1, wherein a first seal ring is disposed between the left and right piston spools and the valve seat.
4. The hydraulically driven, bi-directional sealed axial flow shut off valve of claim 1, wherein a second seal ring is disposed between the left and right piston spools and the cylinder block.
5. The hydraulic transmission bidirectional sealing axial flow stop valve according to claim 1, wherein a piston locking nut for locking and fixing is arranged outside the sliding thrust bearing, and the piston locking nut and the piston rotate relatively.
6. The hydraulically driven, two-way sealed, axial flow shut-off valve of claim 1, wherein the hydraulic medium is hydraulic oil or purified water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263209.7A CN107842618B (en) | 2017-12-05 | 2017-12-05 | Hydraulic transmission bidirectional sealing axial flow type stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263209.7A CN107842618B (en) | 2017-12-05 | 2017-12-05 | Hydraulic transmission bidirectional sealing axial flow type stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107842618A CN107842618A (en) | 2018-03-27 |
| CN107842618B true CN107842618B (en) | 2024-04-30 |
Family
ID=61664419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711263209.7A Active CN107842618B (en) | 2017-12-05 | 2017-12-05 | Hydraulic transmission bidirectional sealing axial flow type stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842618B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594421B (en) * | 2019-09-02 | 2020-11-03 | 江苏盐电阀门有限公司 | Axial-flow type cut-off valve |
| CN118066318B (en) * | 2024-04-19 | 2024-06-21 | 福建永强阀门制造有限公司 | Hydraulic labor-saving gate valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1353573A (en) * | 1963-01-15 | 1964-02-28 | Comp Generale Electricite | Sealing valve with direct passage |
| CN203604679U (en) * | 2013-12-05 | 2014-05-21 | 中亚阀门有限公司 | Hydraulic plunger type parallel opening flat gate valve |
| CN204459217U (en) * | 2014-12-29 | 2015-07-08 | 博纳斯威阀门集团有限公司 | A kind of Double-disc type hydraulic pressure opening valve |
| CN105065700A (en) * | 2015-07-13 | 2015-11-18 | 哈托利海托阀门（杭州）有限公司 | Self-sealing gate valve structure |
| CN106678405A (en) * | 2017-02-10 | 2017-05-17 | 黄继亭 | High-pressure self-sealing valve |
| CN207621381U (en) * | 2017-12-05 | 2018-07-17 | 博纳斯威阀门股份有限公司 | A kind of hydraulic drive two way seal axial-flow type shut-off valve |
-
2017
- 2017-12-05 CN CN201711263209.7A patent/CN107842618B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1353573A (en) * | 1963-01-15 | 1964-02-28 | Comp Generale Electricite | Sealing valve with direct passage |
| CN203604679U (en) * | 2013-12-05 | 2014-05-21 | 中亚阀门有限公司 | Hydraulic plunger type parallel opening flat gate valve |
| CN204459217U (en) * | 2014-12-29 | 2015-07-08 | 博纳斯威阀门集团有限公司 | A kind of Double-disc type hydraulic pressure opening valve |
| CN105065700A (en) * | 2015-07-13 | 2015-11-18 | 哈托利海托阀门（杭州）有限公司 | Self-sealing gate valve structure |
| CN106678405A (en) * | 2017-02-10 | 2017-05-17 | 黄继亭 | High-pressure self-sealing valve |
| CN207621381U (en) * | 2017-12-05 | 2018-07-17 | 博纳斯威阀门股份有限公司 | A kind of hydraulic drive two way seal axial-flow type shut-off valve |
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| Publication number | Publication date |
|---|---|
| CN107842618A (en) | 2018-03-27 |
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