CN113339546B - Two-position three-way valve - Google Patents
Two-position three-way valve Download PDFInfo
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- CN113339546B CN113339546B CN202110583918.3A CN202110583918A CN113339546B CN 113339546 B CN113339546 B CN 113339546B CN 202110583918 A CN202110583918 A CN 202110583918A CN 113339546 B CN113339546 B CN 113339546B
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- pressure control
- way valve
- matching
- water supply
- cavity
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/048—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with valve seats positioned between movable valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a two-position three-way valve which comprises a three-way valve body and a passage control mechanism, wherein a vertical communication cavity is formed between a water supply communication passage and a back flush communication passage, the passage control mechanism comprises a pressure control cavity and a linkage driving rod shaft positioned in the vertical communication cavity, a back flush matching plug and a water supply matching plug are respectively arranged at two ends of the linkage driving rod shaft, a pressure control diaphragm is arranged between the pressure control cavity and the vertical communication cavity, one end of the back flush matching plug of the linkage driving rod shaft is in linkage connection with a diaphragm seat of the pressure control diaphragm, and a pressure control channel is arranged at the top end of the pressure control cavity. The invention adopts respective axial sealing matching of the water supply communication path and the back flush communication path, thereby eliminating the defect of circumferential friction damage in the prior art, having reliable two-path switching sealing performance and prolonging the effective service life. Through the axial butt seal and the cooperation of the peripheral conical surface, a double-seal matching structure is formed, and the sealing effect is remarkably improved. The whole design is simple and ingenious, the manufacturing and production are easy, and the economic value is higher.
Description
Technical Field
The invention relates to a two-position three-way valve, and belongs to the technical field of pipeline valve bodies.
Background
The two-position three-way valve is a valve which is started by pipeline pressure and directly sealed by a diaphragm. Can be applied to the fields of water quality treatment and the like. The back flushing valve can be started by pipeline pressure or an external pressure source, and can realize programmable control by additionally arranging an electromagnetic valve, and regularly flushes and discharges sewage. The following two working modes can be automatically switched according to the working condition and the system setting of the filtering system: and a filtering mode allowing the impurity-containing water flow to directly flow to the filter through the water outlet. And (4) cutting off a passage between the water gaps, opening a sewage discharge outlet, washing the filter and removing impurities.
The traditional two-position three-way valve adopts a shaft rod with linear displacement to carry out switching displacement of a single sealing body, so that water passage switching is realized, the water passage switching adopts the matching of a passage in the valve, a back flush passage and the single sealing body, and the single sealing body adopts the matching of the peripheral wall of a sealing ring plug, the passage in the valve and the back flush passage, so that the abrasion of the peripheral wall of the sealing ring plug can occur, and the sealing performance of the two passages is influenced.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a two-position three-way valve aiming at the problem that the two passages of the traditional two-position three-way valve share a sealing ring plug and are greatly abraded.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a two-position three-way valve comprises a three-way valve body and a passage control mechanism for controlling two passages, wherein the three-way valve body comprises a water inlet pipe end, a water outlet pipe end and a back flush pipe end, a water supply communication passage is arranged between the water inlet pipe end and the water outlet pipe end, a back flush communication passage is arranged between the water inlet pipe end and the back flush pipe end,
a vertical communication cavity communicated with the water inlet pipe end is formed between the water supply communication passage and the back flush communication passage, the passage control mechanism comprises a pressure control chamber arranged at the top of the water supply communication passage and a linkage driving rod shaft positioned in the vertical communication cavity,
a back flush matching plug matched with the water supply communication channel and a water supply matching plug matched with the back flush communication channel are respectively arranged at two ends of the linkage driving rod shaft, a pressure control diaphragm is arranged between the pressure control chamber and the vertical communication cavity, one end of the back flush matching plug of the linkage driving rod shaft is in linkage connection with a diaphragm seat of the pressure control diaphragm,
and the top end of the pressure control cavity is provided with a pressure control channel.
Preferably, the recoil cooperation plug and the water supply cooperation plug are both annular plug bodies, an annular cavity groove is formed in the sealing end face of each annular plug body, and the two ends of the vertical communication cavity are respectively provided with a cooperation ring bulge matched with the annular cavity groove.
Preferably, the outer peripheral wall of the engaging annular projection is provided with an engaging tapered wall surface.
Preferably, a sealing part is respectively arranged between the matching passage of the annular plug body and the linkage driving rod shaft.
Preferably, an elastic part for forcing the linkage driving rod shaft to displace in a direction departing from the backwash communication path is arranged between the linkage driving rod shaft and the backwash communication path.
Preferably, one end of the back-washing communication path of the three-way valve body is provided with a back-washing pipe seat which is detachably matched, and the elastic part is arranged between the back-washing pipe seat and the water supply matching plug.
Preferably, a sealing ring is arranged between the backwash pipe seat and the three-way valve body.
Preferably, a sealing cover body used for forming the pressure control cavity is arranged on the three-way valve body, the pressure control diaphragm is arranged between the sealing cover body and the three-way valve body in a limiting mode, and the pressure control channel is located at the top of the sealing cover body.
The invention has the following beneficial effects:
1. the water supply communication path and the backwashing communication path are respectively matched in an axial sealing manner, the defect of traditional circumferential friction damage is overcome, the two-path switching sealing performance is reliable, and the effective service life is prolonged.
2. Through the axial butt seal and the cooperation of the peripheral conical surface, a double-seal matching structure is formed, and the sealing effect is remarkably improved.
3. The whole design is simple and ingenious, the manufacturing and production are easy, and the economic value is higher.
Drawings
Fig. 1 is a schematic structural diagram of a two-position three-way valve according to the present invention.
Detailed Description
The invention provides a two-position three-way valve. The technical solution of the present invention is described in detail below with reference to the accompanying drawings so that it can be more easily understood and appreciated.
A two-position three-way valve is shown in figure 1 and comprises a three-way valve body 1 and a passage control mechanism 2 for two-position passage control, wherein the three-way valve body 1 comprises a water inlet pipe end 11, a water outlet pipe end 12 and a back-washing pipe end 13, a water supply communication passage 3 is arranged between the water inlet pipe end 11 and the water outlet pipe end 12, and a back-washing communication passage 4 is arranged between the water inlet pipe end 11 and the back-washing pipe end 13.
In the conventional passage control mechanism of the three-way valve body 1, the valve plug with switching displacement is adopted to perform switching sealing on the water supply communication passage 3 and the back flush communication passage 4, the valve plug, the water supply communication passage 3 and the back flush communication passage 4 are in peripheral radial matching sealing, and the displacement direction is in an axial direction, so that friction exists between the valve plug and the wall surface of the passage, the sealing performance of the on-off passage is influenced by abrasion generated by the friction, and leakage exists in both water supply and back flush.
In order to solve the problem, in the present embodiment, a vertical communication cavity 5 communicated with the water inlet pipe end 11 is formed between the water supply communication channel 3 and the backwashing communication channel 4, and the channel control mechanism 2 includes a pressure control chamber 6 arranged at the top of the water supply communication channel and an interlocking drive rod shaft 7 positioned in the vertical communication cavity.
The two ends of the linkage driving rod shaft 7 are respectively provided with a backflushing matching plug 71 used for matching with the water supply communication path and a water supply matching plug 72 used for matching with the backflushing communication path, a pressure control diaphragm 8 is arranged between the pressure control chamber 6 and the vertical communication cavity, one end of the backflushing matching plug of the linkage driving rod shaft is in linkage connection with a diaphragm seat of the pressure control diaphragm, and the top end of the pressure control chamber 6 is provided with a pressure control channel 60.
The specific implementation process and principle description are as follows:
firstly, the water supply communication path 3 and the back flush communication path 4 are positioned at two ends of the through cavity through the design of the vertical communication cavity 5, so that the plug body is conveniently in sealing fit with the plug body.
When normal circulation water supply is carried out, the linkage driving rod shaft 7 is lifted through pressure regulation control, the water supply matching plug 72 is lifted to be matched with the back flush communication path 4 in a sealing mode, the back flush matching plug 71 is separated from the water supply communication path 3, and a water supply flow path of the water inlet pipe end 11 is formed through the vertical communication cavity 5, the water supply communication path 3 and the water outlet pipe end 12 in sequence.
During back flushing, the linkage driving rod shaft 7 descends through pressure regulation control, the water supply matching plug 72 is pressed down to be separated from the back flushing communication path 4, the back flushing matching plug 71 is pressed down to be in sealing fit with the water supply communication path 3, and a back flushing flow path of the back flushing pipe end 13 sequentially passing through the back flushing communication path 4, the vertical communication cavity 5 and the water inlet pipe end 11 is formed.
The water supply communication path 3 and the back flush communication path 4 are positioned at two ends of the vertical communication cavity 5, and the axial butt sealing between the back flush matching plug 71 and the water supply communication path 3 and the axial butt sealing between the water supply matching plug 72 and the back flush communication path 4 can be realized through the linkage driving rod shaft 7, so that the traditional plug body friction is eliminated, and the effective service life is prolonged.
It should be noted that the pressure control channel 60 can be started by back flushing with pipeline pressure or an external pressure source, and is provided with an electromagnetic valve for programmable control and timing flushing and pollution discharge.
In one embodiment, as shown in fig. 1, the recoil fit plug 71 and the water supply fit plug 72 are both annular plug bodies 70, the sealing end surfaces of the annular plug bodies 70 are provided with annular cavity grooves 700, and the two ends of the vertical communication cavity 5 are respectively provided with fit ring protrusions 50 for fitting with the annular cavity grooves 700. The outer peripheral wall of the engaging ring protrusion 50 is provided with an engaging tapered wall surface 500.
Specifically, by adopting the axial matching mode of the matching ring protrusion 50 and the annular cavity groove 700, when the sealing matching is carried out, the end surface of the matching ring protrusion 50 is in contact sealing with the inner wall of the annular cavity groove 700, so that the relative displacement friction damage is avoided, and the sealing matching structure is protected.
And the matching conical wall surface 500 is used for forming a conical surface matching structure with the outer peripheral wall of the annular cavity 700, and in the axial alignment process, secondary sealing of the outer periphery is formed, so that the sealing property is improved.
In one embodiment, a seal is provided between the mating passage of the annular plug body 70 and the shaft of the linked drive shaft, respectively. I.e., to meet mating passage seal-carrying requirements of the annular plug body 70.
In one embodiment, an elastic portion 9 for forcing the linkage drive rod shaft to displace away from the backwash communication path is provided between the linkage drive rod shaft 7 and the backwash communication path.
Specifically, the elastic portion 9 provides a stable pressure when the water supply passage is provided, ensures a sealing pressure between the water supply engagement plug 72 and the backwash communication passage 4, and provides a stable water supply seal in a state where the pressure control chamber 6 is not in a power-driven change, thereby reducing potential energy damage of normal water supply.
In one embodiment, one end of the back-washing communication path of the three-way valve body 1 is provided with a back-washing pipe seat 20 which is detachably matched, and the elastic part is arranged between the back-washing pipe seat and the water supply matching plug. A sealing ring is arranged between the back washing pipe seat and the three-way valve body.
The assembly requirement is met through the back flush pipe seat 20, and the elastic part and the plug body are easy to carry through.
In one embodiment, the three-way valve body 1 is provided with a sealing cover body 30 for forming the pressure control chamber 6, the pressure control diaphragm is limited and arranged between the sealing cover body and the three-way valve body, and the pressure control channel is positioned at the top of the sealing cover body. The pressure control diaphragm and other parts are easily assembled through the sealing cover body 30, and the forming difficulty is reduced.
Through the above description, it can be found that the two-position three-way valve provided by the invention adopts respective axial sealing fit for the water supply communication path and the back flush communication path, so that the defect of traditional circumferential friction damage is eliminated, the two-path switching sealing performance is reliable, and the effective service life is prolonged. Through the axial butt seal and the cooperation of the peripheral conical surface, a double-seal matching structure is formed, and the sealing effect is remarkably improved. The whole design is simple and ingenious, the manufacturing and production are easy, and the economic value is higher.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (6)
1. The utility model provides a two three-way valves, includes three-way valve body and is used for two access control's access control mechanism, three-way valve body includes into water pipe end, play water pipe end, back flush pipe end, into water pipe end with be equipped with the water supply communication route between the play water pipe end, into water pipe end with be equipped with back flush communication route between the back flush pipe end, its characterized in that:
a vertical communication cavity communicated with the end of the water inlet pipe is formed between the water supply communication passage and the back flush communication passage, the passage control mechanism comprises a pressure control chamber arranged at the top of the water supply communication passage and a linkage driving rod shaft positioned in the vertical communication cavity,
a back flush matching plug matched with the water supply communication channel and a water supply matching plug matched with the back flush communication channel are respectively arranged at two ends of the linkage driving rod shaft, a pressure control diaphragm is arranged between the pressure control chamber and the vertical communication cavity, one end of the back flush matching plug of the linkage driving rod shaft is in linkage connection with a diaphragm seat of the pressure control diaphragm,
the top end of the pressure control cavity is provided with a pressure control channel;
the backflushing matching plug and the water supply matching plug are both annular plug bodies, annular cavity grooves are formed in the sealing end faces of the annular plug bodies, and matching annular protrusions matched with the annular cavity grooves are respectively arranged at the two ends of the vertical communication cavity;
an elastic part used for forcing the linkage driving rod shaft to displace in the direction deviating from the direction of the backwashing communication path is arranged between the linkage driving rod shaft and the backwashing communication path.
2. The two-position, three-way valve of claim 1, wherein:
the outer circumferential wall of the matching ring protrusion is provided with a matching conical wall surface.
3. The two-position, three-way valve of claim 1, wherein:
sealing parts are respectively arranged between the matching and connecting channel of the annular plug body and the linkage driving rod shaft.
4. The two-position, three-way valve of claim 1, wherein:
one end of the back-washing communication path of the three-way valve body is provided with a back-washing pipe seat which is detachably matched, and the elastic part is arranged between the back-washing pipe seat and the water supply matching plug.
5. The two-position, three-way valve of claim 4, wherein:
and a sealing ring is arranged between the backwashing pipe seat and the three-way valve body.
6. The two-position, three-way valve of claim 1, wherein:
the three-way valve body is provided with a sealing cover body used for forming the pressure control cavity, the pressure control diaphragm is arranged between the sealing cover body and the three-way valve body in a limiting mode, and the pressure control channel is located at the top of the sealing cover body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110583918.3A CN113339546B (en) | 2021-05-27 | 2021-05-27 | Two-position three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110583918.3A CN113339546B (en) | 2021-05-27 | 2021-05-27 | Two-position three-way valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113339546A CN113339546A (en) | 2021-09-03 |
| CN113339546B true CN113339546B (en) | 2023-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110583918.3A Active CN113339546B (en) | 2021-05-27 | 2021-05-27 | Two-position three-way valve |
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| CN (1) | CN113339546B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4752445A (en) * | 1985-08-20 | 1988-06-21 | American Sterilizer Company | Bi-directional sealing method to control fluid flow between an air inlet and a pressure chamber |
| US4862914A (en) * | 1988-03-11 | 1989-09-05 | Bermad | Multi-position valve for backflushing filters |
| US5899231A (en) * | 1996-12-30 | 1999-05-04 | Drori; Mordecki | Automatic three-way valve |
| CN2557768Y (en) * | 2002-06-14 | 2003-06-25 | 武汉大禹阀门制造有限公司 | Filtering two-way control valve |
| CN201621328U (en) * | 2010-03-25 | 2010-11-03 | 上海科系思工业设备有限公司 | Pneumatic valve seal device based on compound seal surface |
| CN101956862A (en) * | 2010-09-14 | 2011-01-26 | 浙江晶泉水处理设备有限公司 | Liquid flushing type multi-channel switching channel valve assembly |
| CN202266699U (en) * | 2011-09-28 | 2012-06-06 | 新乡市宇通阀门有限公司 | Self-cleaning sewage drive three-way valve |
| CN103174848A (en) * | 2013-03-27 | 2013-06-26 | 上海电机学院 | Two-station three-way normally-open-type backwashing valve |
| CN103672048A (en) * | 2013-11-28 | 2014-03-26 | 山东建华阀门制造有限公司 | Vertical check valve |
| CN205383293U (en) * | 2016-01-29 | 2016-07-13 | 杭州奥特普灌溉设备有限公司 | Novel backwash valve unfamiliarly commutates |
| CN205841854U (en) * | 2016-06-07 | 2016-12-28 | 德奥电器科技长兴有限公司 | The recoil valve of water purifier |
| CN210088061U (en) * | 2019-03-30 | 2020-02-18 | 无锡市伦渠自控阀门制造有限公司 | Electric assembled three-way flow dividing regulating valve |
| CN212004384U (en) * | 2020-03-05 | 2020-11-24 | 上海依匹迪环保科技有限公司 | Back-flushing hydraulic valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20030275A1 (en) * | 2003-02-14 | 2004-08-15 | Alberto Lodolo | 3-WAY VALVE FOR LIQUIDS WITH BUFFERED SHUTTERS. |
-
2021
- 2021-05-27 CN CN202110583918.3A patent/CN113339546B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4752445A (en) * | 1985-08-20 | 1988-06-21 | American Sterilizer Company | Bi-directional sealing method to control fluid flow between an air inlet and a pressure chamber |
| US4862914A (en) * | 1988-03-11 | 1989-09-05 | Bermad | Multi-position valve for backflushing filters |
| US5899231A (en) * | 1996-12-30 | 1999-05-04 | Drori; Mordecki | Automatic three-way valve |
| CN2557768Y (en) * | 2002-06-14 | 2003-06-25 | 武汉大禹阀门制造有限公司 | Filtering two-way control valve |
| CN201621328U (en) * | 2010-03-25 | 2010-11-03 | 上海科系思工业设备有限公司 | Pneumatic valve seal device based on compound seal surface |
| CN101956862A (en) * | 2010-09-14 | 2011-01-26 | 浙江晶泉水处理设备有限公司 | Liquid flushing type multi-channel switching channel valve assembly |
| CN202266699U (en) * | 2011-09-28 | 2012-06-06 | 新乡市宇通阀门有限公司 | Self-cleaning sewage drive three-way valve |
| CN103174848A (en) * | 2013-03-27 | 2013-06-26 | 上海电机学院 | Two-station three-way normally-open-type backwashing valve |
| CN103672048A (en) * | 2013-11-28 | 2014-03-26 | 山东建华阀门制造有限公司 | Vertical check valve |
| CN205383293U (en) * | 2016-01-29 | 2016-07-13 | 杭州奥特普灌溉设备有限公司 | Novel backwash valve unfamiliarly commutates |
| CN205841854U (en) * | 2016-06-07 | 2016-12-28 | 德奥电器科技长兴有限公司 | The recoil valve of water purifier |
| CN210088061U (en) * | 2019-03-30 | 2020-02-18 | 无锡市伦渠自控阀门制造有限公司 | Electric assembled three-way flow dividing regulating valve |
| CN212004384U (en) * | 2020-03-05 | 2020-11-24 | 上海依匹迪环保科技有限公司 | Back-flushing hydraulic valve |
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| Publication number | Publication date |
|---|---|
| CN113339546A (en) | 2021-09-03 |
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