CN100424387C - Front-enclosed pressure balance type vale and its operating method - Google Patents
Front-enclosed pressure balance type vale and its operating method Download PDFInfo
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- CN100424387C CN100424387C CNB2005100449454A CN200510044945A CN100424387C CN 100424387 C CN100424387 C CN 100424387C CN B2005100449454 A CNB2005100449454 A CN B2005100449454A CN 200510044945 A CN200510044945 A CN 200510044945A CN 100424387 C CN100424387 C CN 100424387C
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- valve core
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Abstract
The invention discloses a pressure-balance valve with closed frontal end and the working method. The valve comprises a valve core casing with inlet and outlet; valve core sliding in the valve core casing, which comprises base body, frontal sealing chip on the front of base body, drainage channel, by which frontal and back ends of valve core is connected and seal gasket closing the drainage channel, outlet closure formed by frontal sealing chip and seal gasket matched; a power device and a driving device. The closed process is that after drainage channel is closed valve core slides ahead to close the outlet and the connecting process is that after drainage channel is opened valve core slides backward to connect inlet and outlet. Thereout, driving force for opening and closing valve in the invention is small.
Description
Technical field
The present invention relates to a kind of valve, particularly relate to a kind of front-enclosed pressure balance type vale and method of work thereof.
Background technique
At present, the valve that latus rectum is bigger has generally comprised two classes, and a class is valves such as butterfly valve, ball valve, gate valve, and another kind of is soil discharging valve or stop valve.Cooperating between the valves such as the butterfly valve that latus rectum is bigger, ball valve, gate valve, movable part and fixed block is tightr, cause open or driving force that throttle down is required big, and repeatedly open and close easily to cause between the component and wear and tear.Soil discharging valve or stop valve, rely on the valve block rectilinear translation to come the covering fluid passage to reach the purpose of opening/shutting valve, the valve block of this class valve is subjected to the unidirectional pressure of fluid bigger, and the required unlatching or the driving force of throttle down are also bigger, is unfavorable for starting fast, continually valve.
Summary of the invention
In order to overcome the big problem of the existing startup driving force of existing valve, the invention provides a kind of front-enclosed pressure balance type vale and method of work thereof, the required driving force of its unlatching or throttle down is little.
The technical solution adopted for the present invention to solve the technical problems is: front-enclosed pressure balance type vale, and it comprises:
A valve core housing, it has a water intake and a water outlet at least;
The spool in the valve core housing is located in a slip, it comprises that a matrix, one be located at the preceding diaphragm seal of matrix front end, a current by pass and the sealing gasket that can seal current by pass that is communicated with the spool front/rear end, form between matrix ear end face and the valve core housing one can be communicated with water intake or and first cavity in valve core housing outside liquid space, current by pass is communicated with first cavity and water outlet, wherein, the cooperation of preceding diaphragm seal and sealing gasket can be sealed water outlet;
Power plant and a transmission device, its cooperation make spool in valve core housing, slide or the sealing gasket activity with sealing or open current by pass;
Wherein, closed process is: earlier by sealing gasket sealing current by pass; Spool is to front slide then, and by preceding diaphragm seal sealing water outlet; Handshaking procedures: open current by pass earlier; Spool slides backward to be communicated with water intake and water outlet then.
Described valve core housing has all sidewall, and wherein, spool slides and is located at all sidewall inner peripheral surfaces; Described water intake balancedly is opened in all sidewalls along the chow ring of spool correspondence, and the liquid of the feasible water intake that is sealed balances each other to all pressure perpendicular to axial direction that spool produces.
The rear portion of all sidewalls of described valve core housing has a conduction hole, the space and first cavity of the outside entry liquid of its connecting valve core retainer plate.
Described transmission device comprises that a slip is located at pull bar and a linkage of spool; Match between pull bar and the linkage, make: pull bar can drive sealing gasket and open or seal current by pass, or pull bar drives spool by linkage and slides to open or to seal entery and delivery port.
Described spool matrix is a housing empty in, and its inner cavity forms second cavity as a current by pass part; Sealing gasket is positioned at second cavity and is fixed on the pull bar.
Be fixed with traction block and one on the described pull bar and be positioned at cover plate before the traction block, traction block and cover plate all are positioned at second cavity, wherein, sealing gasket is fixed in the cover plate front surface, and the axial distance between traction block and the cover plate is less than the distance of the axial front and back stop of second cavity.
Also comprise: a valve casing that is fixedly arranged on the valve core housing outside; The spool front portion is provided with a guide plate, wherein, cooperates between the valve core housing outside, valve casing and the guide plate to constitute the mobile little streamline passage of angle of deviation of fluid, and fluid flows to water intake by the streamline passage and goes out from water outlet outside valve casing.
The water inlet end place of described valve casing is provided with the rotational flow air knock out drum, and it comprises that a spin chamber that is positioned at low side and one are positioned at high-end air chamber, and the spin chamber is that the cross section is circular cavity, and the water inlet of spin chamber communicates with the water inlet of valve casing.
When described spool matrix reached the relevant position of all sidewalls, its all side can be covered the water intake that is sealed fully.
Another technological scheme of the present invention is: the method for work of front-enclosed pressure balance type vale, and it comprises:
A valve core housing, it has a water intake and a water outlet at least;
The spool in the valve core housing is located in a slip, it comprises that a matrix, one be located at the preceding diaphragm seal of matrix front end, a current by pass and the sealing gasket that can seal current by pass that is communicated with the spool front/rear end, form between spool ear end face and the valve core housing one can be communicated with water intake or and first cavity in valve core housing outside liquid space, current by pass is communicated with first cavity and water outlet, wherein, preceding diaphragm seal and sealing gasket cooperate can seal water outlet, and the liquid of the water intake that is sealed balances each other to all pressure perpendicular to axial direction that spool produces;
Power plant and a transmission device, its cooperation make spool in valve core housing, slide or the sealing gasket activity with sealing or open current by pass;
Wherein, the valve closing process steps comprises: (1), power plant drive sealing gasket sealing current by pass, the first cavity supercharging; (2), the spool impetus that is subjected to the power plant and the first cavity hydraulic pressure moves forward, the side week of spool hides stifled water intake, constitutes for the first time not exclusively sealing; (3) spool is subjected to the impetus of power plant and hydraulic pressure, and the press sealed forward water outlet of the preceding diaphragm seal of spool matrix constitutes complete closed for the second time;
Valve opening process step comprises: (1), power plant drive sealing gasket and open current by pass, are the decompression of first cavity; (2), spool is subjected to power plant and water impact drive spool moves backward, is communicated with water intake and water outlet.
By the above-mentioned description of this invention as can be known, compare with background technique, the present invention has following beneficial effect:
One, water intake balancedly is opened in valve core housing along chow ring, and water intake is balancedly sealed in all sides of spool, sealing liquid acts on the mutual balance of pressure of spool, does not cause the spool folk prescription to pressurized, reduces the pressure wearing and tearing between the parts, the length that increases the service life, and opening resistance is little;
Its two, valve sealing is sealed by the once sealing that become of side of spool week and secondary that the spool front end is become and is combined, sealing effect is good;
Its three, spool week the side and all sidewall inner peripheral surfaces between non-tight contact, it is little that spool moves suffered force of sliding friction, do not have wearing and tearing, it is laborsaving to drive spool;
They are four years old, the open and close of control spool current by pass utilizes the pushed at high pressure spool reach of first cavity to change the pressure of first cavity, moves after causing the first cavity low pressure post-tensioning movable valve plug, therefore valve of the present invention, open or valve core driving force that throttle down is required little;
Its five, the water channel of fluid can be designed as the little streamlined passage of angle of deviation, has reduced the current dynamic resistance; Its six, water inlet end place is provided with the rotational flow air knock out drum, when throttle down, weakens the impact force of fluid to valve.
Description of drawings
The present invention is described further below in conjunction with drawings and Examples.
Fig. 1 is the generalized section of the valve of embodiments of the invention one.
Fig. 2 is the generalized section of the valve of embodiments of the invention two.
Fig. 3 is the generalized section of the valve of embodiments of the invention three.
Fig. 4 is the generalized section of the valve of embodiments of the invention four.
Fig. 5 is the generalized section of the valve of embodiments of the invention five.
Embodiment
Embodiment one
Front-enclosed pressure balance type vale, as shown in Figure 1, it comprises valve shell 1, valve core housing 2, spool 3, a power plant and a transmission device.
Spool 3 slides and is located in the valve core housing 2, and it comprises that a matrix, one be located at the seal ring 3.3 of matrix front end, seal ring compressing tablet 3.4, a current by pass and the gasket seal 3.5.3 that can seal current by pass that is communicated with the spool front/rear end.Form first cavity that can be communicated with water intake 2.2 and valve core housing 2 outsides between spool 3 ear end faces and the valve core housing space, current by pass is communicated with first cavity and water outlet.Seal ring 3.3 is corresponding with the airtight shelves ring 2.3 on the valve core housing, cooperates with gasket seal 3.5.3, seal ring 3.3 and seal ring compressing tablet 3.4 and can seal water outlet 4.
Leave the gap between spool 3 all sides and the valve core housing 2 all sidewall inner peripheral surfaces, have a conduction hole 2.1, its connecting valve core retainer plate 2 space outerpaces and first cavity on the position, back partially of valve core housing 2 all sidewalls.Matrix is a cavity body, forms one second cavity in it, and the antetheca of matrix and rear wall have outage 3.1 and 3.2.Current by pass is made of the outage 3.1,3.2 and second cavity, and current by pass is communicated with first cavity and water outlet valve core retainer plate inner space.Wherein, the orifice area of conduction hole 2.1 is less than the orifice area of outage 3.2.
Cooperate between valve core housing 2, valve shell 1 and the spool 3 and constituted fluid passage to be opened/closed with water intake 2.2 and water outlet 4.The axial length of spool 3 is greater than the axial width of the water intake on the valve core housing 2 2.2, and when the spool matrix arrived the relevant position of all sidewalls, its all side can be covered the water intake that is sealed fully; The relative position of spool 3 and valve core housing 2 changes, and can change the area of opening of water intake 2.2, makes this fluid passage have and opens and local barrier.
Power plant can be hydraulic system, and multiple in the prior art power plant all may be used on not being further described at this in the technical program.
Transmission device comprises that a slip is located at pull bar 3.5 and a linkage of spool; Pull bar 3.5 anterior slips are arranged in position shelf 2.4, slide and be arranged in diapire in the rear portion; Linkage comprises that be fixed on the pull bar 3.5 one traction block 3.5.1 and one are positioned at the cover plate 3.5.2 before the traction block 3.5.1.Traction block 3.5.1 and cover plate 3.5.2 all place in second cavity of spool 3.Axial distance between traction block 3.5.1 and the cover plate 3.5.2 is less than the axial distance between the stop before and after second cavity.Gasket seal 3.5.3 is fixed in cover plate 3.5.2 front surface.The antetheca that traction block and cover plate act on spool respectively along with moving forward and backward of pull bar, rear wall move forward or backward to promote spool, and cover plate is corresponding to cavity antetheca outage, and gasket seal 3.5.3 seals outage 3.2 during the compressing antetheca.
Power plant and transmission device, it cooperates makes: promote pull bar 3.5, then sliding zone movable valve plug 3 is in valve core housing 2 slides forwards forward for cover plate 3.5.2, and gasket seal 3.5.3 seals current by pass simultaneously.Or pulling pull bar 3.5, traction block 3.5.1 slide backward and drive spool 3 slip backward in valve core housing 2, and while gasket seal 3.5.3 breaks away from the cavity antetheca and opens current by pass; Or, promote pull bar 3.5, directly seal or open current by pass by gasket seal 3.5.3.
When spool was in sliding mode when valve is in closed condition and in the throttle down process, sealing gasket 3.5.3 sealed current by pass; When valve is in opening state and open when spool is in sliding mode in the valve process, current by pass is on state.
Present embodiment is that the working procedure of fluid description is as follows with water:
Water enters from water inlet 1.2, arrives in the valve shell 1 through filter screen 1.1 backs, flows in the valve core housing 2 from valve core housing water intake 2.2, discharges from water outlet 4.
Valve closed process: promote pull bar 3.5 forward, the antetheca of front shroud 3.5.2 reach compressing spool 3, gasket seal 3.5.3 closes antetheca outage 3.2, the water that enters in the valve core housing 2 from conduction hole 2.1 has bigger pressure, promote spool 3 and move forward, all sides of spool 3 are covered water intake 2.2 gradually and are constituted once sealing.Spool 3 is subjected to the effect of hydraulic pressure, and gasket seal 3.5.3 closes antetheca outage 3.2, and the seal ring 3.3 of its spool front end is being pressed airtight shelves ring 2.3 tightly, and sealing water outlet 4 constitutes the secondary sealing, has blocked water-flowing path.
Valve opening process: pull back pull bar 3.5, front shroud 3.5.2, remove the antetheca of spool 3, antetheca outage 3.2 is open-minded, arranges to water outlet 4 from the water that conduction hole 2.1 enters in the valve core housing 2, causes first, second cavity decompression, traction block 3.5.1 tractive spool 3 fixing on the pull bar 3.5 moves backward, open water intake 2.2 gradually, water-flowing path is open-minded, and water enters valve body row to water outlet 4 from water intake 2.2.
Embodiment two
Present embodiment and embodiment's one difference are: as shown in Figure 2, in a kind of low flow resistance application model, the front end of spool 3 has guide plate 3.6.The guide plate 3.6 of the shell 1 of valve, valve core housing 2, valve core housing water intake 2.2 and spool front end constitutes the mobile little streamline passage of angle of deviation of fluid, and its water intake is 1.2, and water outlet is 4.
Embodiment three
Present embodiment and embodiment's one difference are: as shown in Figure 3, the water inlet 1.2 end places of valve shell 1 are provided with rotational flow air knock out drum 5, it comprises that a spin chamber 5.2 that is positioned at low side and one are positioned at high-end air chamber 5.3, the spin chamber is that the cross section is circular cylindrical cavity, its water inlet 5.1 communicates with the water inlet 1.2 of valve casing, the tangent direction that water inlet 5.1 points to along cylindrical cavity cylndrical surface, spin chamber.When water intake 2.2 was sealed by spool 3, current entered the spin chamber from water inlet 5.1, and current produce rotation, and water level rising pressurized air weakens water hammer.
Present embodiment and embodiment's one difference are: as shown in Figure 4, a kind of water inlet of valve of the present invention is open applicable cases.Water inlet 1.2 on the valve shell 1 has two, and water inlet 1.2 gross areas of formation are big, can think that thus valve shell 1 is open form.
Embodiment five
Present embodiment and embodiment's one difference are: as shown in Figure 5, the water inlet 1.2 on the valve shell 1 has only one.
The above, only for preferred embodiment of the present invention, so can not limit scope of the invention process with this, i.e. the equivalence of doing according to the present patent application claim and description changes and modification, all should still belong in the scope that patent of the present invention contains.
Claims (10)
1. front-enclosed pressure balance type vale, it is characterized in that: it comprises:
A valve core housing, it has a water intake and a water outlet at least;
The spool in the valve core housing is located in a slip, it comprises that a matrix, one be located at the preceding diaphragm seal of matrix front end, a current by pass and the sealing gasket that can seal current by pass that is communicated with the spool front/rear end, form between matrix ear end face and the valve core housing one can be communicated with water intake or and first cavity in valve core housing outside liquid space, current by pass is communicated with first cavity and water outlet, wherein, the cooperation of preceding diaphragm seal and sealing gasket can be sealed water outlet;
Power plant and a transmission device, its cooperation make spool in valve core housing, slide or the sealing gasket activity with sealing or open current by pass;
Wherein, when valve is in closed state, sealing gasket sealing current by pass, and, spool preceding so that preceding diaphragm seal sealing water outlet; When valve was in opening state, current by pass was open-minded, and, spool the back so that water outlet be communicated with water intake.
2. front-enclosed pressure balance type vale according to claim 1 is characterized in that: described valve core housing has all sidewall, and wherein, spool slides and is located at all sidewall inner peripheral surfaces; Described water intake balancedly is opened in all sidewalls along the chow ring of spool correspondence, and the liquid of the feasible water intake that is sealed balances each other to all pressure perpendicular to axial direction that spool produces.
3. front-enclosed pressure balance type vale according to claim 2 is characterized in that: the rear portion of all sidewalls of described valve core housing has a conduction hole, the space and first cavity of the outside entry liquid of its connecting valve core retainer plate.
4. front-enclosed pressure balance type vale according to claim 1 is characterized in that: described transmission device comprises that a slip is located at pull bar and a linkage of spool; Match between pull bar and the linkage, make: pull bar can drive sealing gasket and open or seal current by pass, or pull bar drives spool by linkage and slides to open or to seal entery and delivery port.
5. front-enclosed pressure balance type vale according to claim 4 is characterized in that: described spool matrix is a housing empty in, and its inner cavity forms second cavity as a current by pass part; Sealing gasket is positioned at second cavity and is fixed on the pull bar.
6. front-enclosed pressure balance type vale according to claim 5, it is characterized in that: be fixed with traction block and one on the described pull bar and be positioned at cover plate before the traction block, traction block and cover plate all are positioned at second cavity, wherein, sealing gasket is fixed in the cover plate front surface, and the axial distance between traction block and the cover plate is less than the distance of the axial front and back stop of second cavity.
7. front-enclosed pressure balance type vale according to claim 1 is characterized in that: also comprise: a valve casing that is fixedly arranged on the valve core housing outside; The spool front portion is provided with a guide plate, wherein, cooperates between the valve core housing outside, valve casing and the guide plate to constitute the mobile little streamline passage of angle of deviation of fluid, and fluid flows to water intake by the streamline passage and goes out from water outlet outside valve casing.
8. front-enclosed pressure balance type vale according to claim 7, it is characterized in that: the water inlet end place of described valve casing is provided with the rotational flow air knock out drum, it comprises that a spin chamber that is positioned at low side and one are positioned at high-end air chamber, the spin chamber is that the cross section is circular cavity, and the water inlet of spin chamber communicates with the water inlet of valve casing.
9. front-enclosed pressure balance type vale according to claim 1 is characterized in that: when described spool matrix arrived the relevant position of all sidewalls, its all side can be covered the water intake that is sealed fully.
10. the method for work of front-enclosed pressure balance type vale, it is characterized in that: it comprises:
A valve core housing, it has a water intake and a water outlet at least;
The spool in the valve core housing is located in a slip, it comprises that a matrix, one be located at the preceding diaphragm seal of matrix front end, a current by pass and the sealing gasket that can seal current by pass that is communicated with the spool front/rear end, form between spool ear end face and the valve core housing one can be communicated with water intake or and first cavity in valve core housing outside liquid space, current by pass is communicated with first cavity and water outlet, wherein, preceding diaphragm seal and sealing gasket cooperate can seal water outlet, and the liquid of the water intake that is sealed balances each other to all pressure perpendicular to axial direction that spool produces;
Power plant and a transmission device, its cooperation make spool in valve core housing, slide or the sealing gasket activity with sealing or open current by pass;
Wherein, the valve closing process steps comprises: (1), power plant drive sealing gasket sealing current by pass, the first cavity supercharging; (2), the spool impetus that is subjected to the power plant and the first cavity hydraulic pressure moves forward, the side week of spool hides stifled water intake, constitutes for the first time not exclusively sealing; (3) spool is subjected to the impetus of power plant and hydraulic pressure, and the press sealed forward water outlet of the preceding diaphragm seal of spool matrix constitutes complete closed for the second time; Valve opening process step comprises: (1), power plant drive sealing gasket and open current by pass, are the decompression of first cavity; (2), spool is subjected to power plant and water impact drive spool moves backward, is communicated with water intake and water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100449454A CN100424387C (en) | 2005-10-19 | 2005-10-19 | Front-enclosed pressure balance type vale and its operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100449454A CN100424387C (en) | 2005-10-19 | 2005-10-19 | Front-enclosed pressure balance type vale and its operating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1952448A CN1952448A (en) | 2007-04-25 |
| CN100424387C true CN100424387C (en) | 2008-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100449454A Expired - Fee Related CN100424387C (en) | 2005-10-19 | 2005-10-19 | Front-enclosed pressure balance type vale and its operating method |
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| Country | Link |
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| CN (1) | CN100424387C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790880B (en) * | 2012-11-05 | 2016-04-13 | 中国科学院沈阳自动化研究所 | A kind of underwater hydraulic servovalve pressure compensation structure |
| CN114413039B (en) * | 2022-01-29 | 2024-03-29 | 国瑞蓝皓(天津)新技术有限公司 | Pneumatic material ash-blocking valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85201685U (en) * | 1985-05-02 | 1986-09-03 | 霍建忱 | Plunger (with two ducts) type balance valve |
| CN2071726U (en) * | 1990-05-31 | 1991-02-20 | 史春发 | Three-way two-adjustion stop valve |
| CN1133415A (en) * | 1995-12-26 | 1996-10-16 | 龙游县自来水厂 | Liquid flow-limited control valve |
| CN2434648Y (en) * | 2000-07-31 | 2001-06-13 | 北京华油惠博普科技有限公司 | Internal pressure balance flow regulating valve |
-
2005
- 2005-10-19 CN CNB2005100449454A patent/CN100424387C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85201685U (en) * | 1985-05-02 | 1986-09-03 | 霍建忱 | Plunger (with two ducts) type balance valve |
| CN2071726U (en) * | 1990-05-31 | 1991-02-20 | 史春发 | Three-way two-adjustion stop valve |
| CN1133415A (en) * | 1995-12-26 | 1996-10-16 | 龙游县自来水厂 | Liquid flow-limited control valve |
| CN2434648Y (en) * | 2000-07-31 | 2001-06-13 | 北京华油惠博普科技有限公司 | Internal pressure balance flow regulating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1952448A (en) | 2007-04-25 |
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Granted publication date: 20081008 Termination date: 20211019 |