CN103075522A - Drainage stop valve - Google Patents
Drainage stop valve Download PDFInfo
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- CN103075522A CN103075522A CN2013100096762A CN201310009676A CN103075522A CN 103075522 A CN103075522 A CN 103075522A CN 2013100096762 A CN2013100096762 A CN 2013100096762A CN 201310009676 A CN201310009676 A CN 201310009676A CN 103075522 A CN103075522 A CN 103075522A
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Abstract
The invention discloses a drainage stop valve which comprises a main valve, a piston device and a pilot valve. The main valve is internally provided with a valve cavity which is provided with an inlet, an outlet and a valve core for controlling the inlet and the outlet of the valve cavity to open and close. The drainage stop valve is provided with a liquid inlet communicated with the inlet of the valve cavity and a liquid outlet communicated with the outlet of the valve cavity. The piston device is provided with a piston in synchronous transmission connection with the valve core. The piston divides a piston cavity of the piston device into a first cavity and a second cavity. The pilot valve is provided with a work port communicated with the first cavity. The second cavity of the piston device is communicated with the inlet of the valve cavity through a channel. The liquid inlet of the drainage stop valve is communicated with the second cavity of the piston device through the channel to realize communication with the inlet of the valve cavity. In the moving process of the piston, liquid impurities in the second cavity communicated with the liquid inlet are pushed, so that the liquid impurities flow to the valve cavity quickly and flow out from the liquid outlet through valve cavity so as to drain quickly.
Description
Technical field
The present invention is specifically related to a kind of sewage globe valve.
Background technique
The liquid impurity that filter leaches in the course of the work is deposited in filter housings bottom, and the accumulation of liquid impurity can cause plugged filter and affect the normal operation of filter.Traditional method is to offer pollutant exhaust hole in the bottom of filter, and this pollutant exhaust hole place is dismantled and assembled to be furnished with plug, during blowdown, manually pulls down plug, realizes blowdown.But this conventional method contaminant removal effectiveness is low, and is unsuitable for being applied in the abominable place of operating mode because need to operate manually.
Usually multi-link at the pollutant exhaust hole place of filter have a drain outlet, be provided with the control valve for control of sewage disposal passage break-make in the drain outlet, disclosed a kind of electro-hydraulic control valve in the Chinese utility model patent specification of the structure of this control valve such as notice of authorization CN201007292Y, this electro-hydraulic control valve comprises main valve, piston cylinder and pilot solenoid valve, main valve comprises valve body, be provided with valve pocket in the valve body, valve pocket has import and outlet, the valve body of main valve is provided with the liquid entering hole that is connected with the import of valve pocket and the liquid outlet that is connected with the outlet of valve pocket, in valve pocket, move back and forth the conducting that is equipped with import and outlet by the control valve pocket and disconnect spool with control main valve switch, also be furnished with in the valve pocket herein for applying to spool and force spool to shift to valve seat with the Returnning spring of the active force of the import of disconnection valve pocket and outlet.Have piston cavity in the piston cylinder, hydrodynamic reciprocating sealing is equipped with piston in piston cavity, and piston is connected with the spool Synchronous Transmission, and piston is separated into epicoele and cavity of resorption with piston cavity, and cavity of resorption is communicated with fuel tank, and epicoele then is connected with the working hole of pilot solenoid valve.Pilot solenoid valve is two-position three-way valve, two-position three-way valve has connection oil pump filler opening, the oil outlet that is communicated with fuel tank and the working hole that is communicated with the epicoele of piston cylinder, and working hole is connected with filler opening and drain tap respectively when the two-bit triplet pilot valve is in different station.When the two-bit triplet valve events so that working hole be communicated with filler opening, high pressure oil enters in the epicoele of piston cylinder by the working hole of two-position three-way valve, the active force that pressure oil acts on the piston moves down overcoming action of reset spring power rear driving piston, the piston driving spool moves down, spool and valve seat are separated, the import of the valve pocket of main valve and outlet conducting, main valve open.When the two-bit triplet valve events so that working hole be connected with drain tap, pressure oil in the epicoele of piston cylinder flows back to oil cylinder through drain tap, under action of reset spring, spool and piston will move up, thereby the import of valve pocket disconnects so that main valve is closed with outlet until spool contacts with valve base sealing.
But when opening main valve, process and will overcome outside the active force of Returnning spring, also that the hydraulic oil in the cavity of resorption on the piston cylinder is emptying by the output work of piston at the band movable valve plug for the piston in the above-mentioned control valve, the output work of the piston of having wasted.Simultaneously, above-mentioned control valve is after main valve open, the circulation of pressure-driven liquid in valve pocket that liquid in the valve pocket of main valve is mainly gone out by liquid entering hole, if liquid entering hole pressure is little, flow rate of liquid in the valve pocket is unhappy, can not realize rapid pollution discharging like this when being applied in above-mentioned control valve on the blowdown field.
Summary of the invention
The object of the present invention is to provide a kind of sewage globe valve, can not realize the technical problem of rapid pollution discharging to solve control valve of the prior art.
For achieving the above object, the technological scheme of sewage globe valve provided by the present invention is: sewage globe valve, comprise main valve, piston apparatus and pilot valve, be provided with valve pocket in the main valve, valve pocket has import, outlet and the spool that is used for controlling the import of valve pocket and exports break-make, have the liquid entering hole that is communicated with the import of valve pocket and the liquid outlet that is communicated with the outlet of valve pocket on the sewage globe valve, has the piston that is connected with the spool Synchronous Transmission in the piston apparatus, piston is separated into the first chamber and the second chamber with the piston cavity of piston apparatus, described pilot valve has the working hole that is communicated with described the first chamber, the second chamber of described piston apparatus is connected with the import of valve pocket by passage, and the liquid entering hole of sewage globe valve is communicated with the second chamber of piston apparatus by passage to be realized and being communicated with of described valve pocket import.
The movement direction of described piston is defined as fore-and-aft direction, described the first chamber is positioned at piston the place ahead, the second chamber is positioned at the piston rear, sewage globe valve comprise the middle shell that extends along fore-and-aft direction and with middle shell before, front case and rear case that the removable grafting in rear end is assembled together, described front case and middle shell surround the piston cavity of described piston apparatus, described middle shell and rear case surround the valve pocket of described main valve, described liquid entering hole is opened on the middle shell, the passage in described connection liquid entering hole and the second chamber is the connection liquid entering hole that is provided with of middle shell and the through hole in the second chamber, described pilot valve is connected on the described front case, is provided with the passage of the working hole that is communicated with described the first chamber and pilot valve at front case.
Be furnished with in described the second chamber that the top is pressed on the piston and apply the Returnning spring that forces the piston driving spool to move forward to disconnect import and the outlet of valve pocket to piston, Returnning spring extends along fore-and-aft direction.
Described piston have that the pressure-bearing surface corresponding with liquid in the second chamber have greater than spool with the second chamber in pressure-bearing surface corresponding to liquid.
Offer the emergent pollutant exhaust hole that is connected with described the second chamber on the described middle shell, the removable plug that is connected with in the emergent pollutant exhaust hole.
Be installed with the electrical heating rod that heats for the liquid to the second chamber on the described middle shell, this electrical heating rod extends in the second chamber of piston cavity.
Be installed with temperature controlling device on the described middle shell, temperature controlling device comprises the temperature transducer for detection of fluid temperature in described the second chamber, and the signal output part of temperature transducer is connected with the switch for the work of control electrical heating rod.
Described pilot valve is the pilot solenoid valve of Electromagnetic Control, pilot solenoid valve have for suction port and the air outlet of working hole switched conductive, also be provided with working hole and suction port and the timing device of relief opening switched conductive time for the control pilot valve on the described pilot solenoid valve.
The invention has the beneficial effects as follows: the second chamber of the sewage globe valve upper piston device that provides among the present invention is communicated with the import of valve pocket, the liquid entering hole of blowdown dielectric valve is communicated with the second chamber by passage, liquid entering hole is communicated with the import of valve pocket by the second chamber, the liquid impurity of coming in from liquid entering hole like this will enter by the second chamber the import of valve pocket, when the pilot valve action, driven plunger band movable valve plug moves so that the import of valve pocket and outlet during conducting, main valve is opened, piston is except overcoming the active force that hinders the main valve unlatching, piston will push the liquid impurity in second chamber that will be communicated with liquid entering hole in moving process, so that liquid impurity flows to rapidly valve pocket, and flow away from liquid outlet by valve pocket, realize rapid blowdown.Simultaneously, the second chamber of the piston apparatus of this sewage globe valve is communicated with the import of valve pocket, and the output work of piston is outside overcoming the active force that hinders the main valve unlatching, and the output work of piston also will act on the liquid impurity in the second chamber, the utilization ratio of the output work of piston is higher like this, high working efficiency.
Description of drawings
Fig. 1 is a kind of embodiment's of sewage globe valve provided by the present invention structural representation;
Fig. 2 is the half sectional view of Fig. 1.
Embodiment
As shown in Figure 1 and Figure 2, a kind of embodiment of sewage globe valve, sewage globe valve among this embodiment comprises pilot valve, piston apparatus 2 and the main valve 1 of arranging successively after by forward direction along fore-and-aft direction, be provided with valve pocket 12 in the main valve 1, valve pocket 12 has import and outlet, the mobile spool 13 of opening or closing with the control main valve for import and the outlet break-make of control valve pocket that is equipped with in the valve pocket 12.Have the liquid entering hole 24 that is communicated with the import of valve pocket 12 and the liquid outlet 11 that is communicated with the outlet of valve pocket on the sewage globe valve.Has piston cavity in the piston apparatus 2 herein, in piston cavity, move back and forth along rectilinear direction and be equipped with piston 23, piston 23 is separated into the first chamber 21 and the second chamber 22 with piston cavity, the first chamber 21 is positioned at the place ahead of piston 23, the second chamber 22 is positioned at piston 23 the place aheads, the second chamber 22 of piston apparatus 2 is communicated with by the import of passage with valve pocket 12, the liquid entering hole 24 of sewage globe valve is communicated with the second chamber 22 of piston apparatus 2 by passage, and the liquid entering hole 24 of sewage globe valve is communicated with the import of valve pocket 12 by the second chamber 22 of piston apparatus herein.Described pilot valve is the pilot solenoid valve 3 of Electromagnetic Control, pilot solenoid valve is two-position three-way valve, two-position three-way valve has suction port, air outlet and working hole, this working hole is communicated with the first chamber 21 of piston apparatus 2, by switching the different station of two-position three-way valve, so that the first chamber 22 of piston apparatus is by the working hole of two-position three-way valve and suction port and the relief opening switched conductive of two-position three-way valve.
Concrete, sewage globe valve in the present embodiment comprises housing, housing by along rear the place ahead to the middle shell 20 that extends and be threaded connection corresponding dismantled and assembled fit over middle shell before, rear case 10 and the front case 30 of rear end consist of, has the counterbore 201 that is extended forward by the middle shell ear end face at the rear portion of middle shell 20, the place, aperture of counterbore 201 is flaring structure, be provided with the ladder surface rear ladder hole 101 forward that extends along fore-and-aft direction at rear case 10, place, the front end aperture of the large footpath section of rear ladder hole 101 is flaring structure, and the flaring structure of rear ladder hole 101 herein docks with flaring structure on the counterbore 201.Described middle shell 20 and rear case 10 surround the valve pocket of described main valve 1, and the liquid outlet 11 of described sewage globe valve is the aperture, rear end of the path section of rear ladder hole 101.Has the ladder surface front shoulder hole 202 forward that extends back from the middle shell front-end face along fore-and-aft direction in the front portion of middle shell 20, counterbore 201 coaxial communication of the rear end of front shoulder hole 202 and middle shell 20, the transition joint of the path section of counterbore and front shoulder hole is step surface backwards, middle shell 20 and front case 30 surround the piston cavity of described piston apparatus 2, piston cooperates with the hole wall hydrodynamic reciprocating sealing of the large footpath section of front shoulder hole, piston 23 is separated into the first chamber 21 and the second chamber 22 with piston cavity, offer the passage of the import of the valve pocket that is communicated with the second chamber and main valve at the ladder surface of front shoulder hole 202, described liquid entering hole 24 is opened in the hole wall of the large footpath section of front shoulder hole 202, offers the through hole in connection liquid entering hole 24 and the second chamber 22 at the hole wall of front shoulder hole.Piston is connected by drive pole device 9 Synchronous Transmission with spool, this drive pole device 9 comprises drive link and the drive sleeve that moves in the path section that is located in front shoulder hole 202, drive sleeve is sleeved on outside the drive link, the rear and front end of drive sleeve is pushed up respectively and is pressed on spool 13 and the piston 23, the axial two ends of drive link then respectively correspondence pass and pass spool and piston, the rear end that passes piston of drive link is provided with the unidirectional top of piston and presses the spacing thrust flanges that cooperates herein, and be provided with external thread section in the rear end that passes spool of drive link, be installed with on the external thread section of drive link spool, drive link, the locking nut that drive sleeve and lock piston fasten.Be furnished with in the second chamber 22 in piston apparatus 2 that the top is pressed on the piston and apply to piston and force the piston driving spool mobile with the import that disconnects valve pocket and the Returnning spring of outlet backward, the front end top of this Returnning spring is pressed in top, on the piston and rear end and is pressed on the ladder surface of described front shoulder hole.
Simultaneously, in the present embodiment, piston 23 have the pressure-bearing surface corresponding with liquid in the second chamber 22 greater than spool 13 that have with the second chamber 22 in pressure-bearing surface corresponding to liquid, like this when not needing blowdown, under the effect of Returnning spring and fluid pressure, can guarantee that sewage globe valve is not easy to produce leakage, guarantees the leakproofness of sewage globe valve.
Described two-position three-way valve as pilot solenoid valve 3 is connected on the front case 30, offer the passage 32 of the working hole of the first chamber of being communicated with described piston cylinder and two-position three-way valve at front case 30, also be provided with gas-entered passageway 31 on rear case 32, this gas-entered passageway 31 has for the suction port that docks with source of the gas and the air outlet of docking with the suction port of pilot solenoid valve 3.
When needing liquid entering hole 24 and liquid outlet 11 conductings with the realization blowdown, the two-bit triplet valve events, suction port on the two-position three-way valve and working hole conducting, at this moment, pressurized gas are by the gas-entered passageway 31 on the front case 30, passage 32 on two-position three-way valve and the front case 30 enters in the first chamber 21 of piston apparatus 2, after pressurized gas are applied to active force on the piston 23 and can overcome the active force of 8 pairs of pistons 23 of Returnning spring, piston 23 will be with movable valve plug 13 mobile backward together, spool 13 moves to open main valve 1, at this moment, liquid entering hole 24 is communicated with the liquid outlet 11 of main valve 1 by the second chamber 22 and valve pocket 12, on the one hand at the pressure-acting down blow of liquid impurity, simultaneously, under the pushing effect of piston, liquid impurity in the second chamber can be discharged rapidly, realize rapid pollution discharging.And when not needing blowdown, the two-bit triplet valve events, air outlet on the two-position three-way valve and working hole conducting, pressurized gas in the first chamber 21 in the piston apparatus 2 are drained through working hole and the relief opening of gas channel, two-position three-way valve, at this moment, under the effect of Returnning spring 8, piston 23 will be with movable valve plug 13 mobile backward, the import of valve pocket 12 and outlet disconnect closing main valve until spool 13 contacts with valve base sealing, and the liquid inlet and outlet of sewage globe valve disconnects no longer normal blowdown.
In the present embodiment, for realizing the timing automatic blowdown, as the two-position three-way valve of pilot solenoid valve 3 timing device is being installed, this timing device can be controlled working hole and suction port and the relief opening switched conductive time of two-position three-way valve, and timing device is by the switching time of control two-position three-way valve different station.Electrical socket 33 at pilot solenoid valve 3 is inserted with corresponding electrical plug, and timing device herein is to be arranged on the time circuit plate that is used for control electrical plug and electrical socket conduction time in the electrical plug.
In the present embodiment, for preventing that the phenomenon that liquid freezing freezes and works affect sewage globe valve from appearring when the low-temperature working in sewage globe valve, be installed with the electrical heating rod 4 that heats for the liquid to the second chamber 22 on the middle shell 20, this electrical heating rod 4 extends in the second chamber 22 of piston apparatus 2.Electrical heating rod 4 directly extends in the second chamber of piston cylinder herein, the efficiency of heating surface that can the Effective Raise electrical heating rod, so that the corresponding time of liquid is faster, energy consumption is less.Herein, for controlling heating-up temperature to avoid overheated, be installed with temperature controlling device 4 at middle shell, this temperature controlling device 4 comprises the temperature transducer for detection of fluid temperature in the second chamber, and the signal output part of temperature transducer is connected with the switch for the work of control electrical heating rod.
In the present embodiment, on middle shell 20, also offer the emergent pollutant exhaust hole 6 that is communicated with the second chamber 22 of piston apparatus 2, the removable plug 7 that is connected with on this emergent pollutant exhaust hole 6.When the urgent blowdown of needs, plug 7 to be pulled down from emergent pollutant exhaust hole 6, the liquid impurity in the second chamber is drained through emergent pollutant exhaust hole.
In the above-described embodiments, the suction port of two-position three-way valve is connected with gas-entered passageway on being arranged on rear case, pressurized gas enter the suction port of two-position three-way valve through gas channel, in other embodiments, also gas-entered passageway can be set on the rear case, and the suction port of two-position three-way valve directly is communicated with source of the gas or is communicated with source of the gas by other pipelines.
In the above-described embodiments, pilot solenoid valve is selected two-position three-way valve, in other embodiments, pilot solenoid valve also can be selected other solenoid directional control valve, as long as this solenoid directional control valve has a working hole and a suction port and an air outlet at least, and have two working positions that make working hole and suction port and air outlet distinguish switched conductive and get final product.
In the above-described embodiments, timing device is the time circuit plate that is located in the electrical plug, and in other embodiments, timing device also can be the time circuit plate in the electrical socket that is located at pilot solenoid valve; Or other the timing architecture that can control the pilot solenoid valve Switch of working position time.
Claims (8)
1. sewage globe valve, comprise main valve, piston apparatus and pilot valve, be provided with valve pocket in the main valve, valve pocket has import, outlet and the spool that is used for controlling the import of valve pocket and exports break-make, have the liquid entering hole that is communicated with the import of valve pocket and the liquid outlet that is communicated with the outlet of valve pocket on the sewage globe valve, has the piston that is connected with the spool Synchronous Transmission in the piston apparatus, piston is separated into the first chamber and the second chamber with the piston cavity of piston apparatus, described pilot valve has the working hole that is communicated with described the first chamber, it is characterized in that: the second chamber of described piston apparatus is connected with the import of valve pocket by passage, and the liquid entering hole of sewage globe valve is communicated with the second chamber of piston apparatus by passage to be realized and being communicated with of described valve pocket import.
2. sewage globe valve according to claim 1, it is characterized in that: the movement direction of described piston is defined as fore-and-aft direction, described the first chamber is positioned at piston the place ahead, the second chamber is positioned at the piston rear, sewage globe valve comprise the middle shell that extends along fore-and-aft direction and with middle shell before, front case and rear case that the removable grafting in rear end is assembled together, described front case and middle shell surround the piston cavity of described piston apparatus, described middle shell and rear case surround the valve pocket of described main valve, described liquid entering hole is opened on the middle shell, the passage in described connection liquid entering hole and the second chamber is the connection liquid entering hole that is provided with of middle shell and the through hole in the second chamber, described pilot valve is connected on the described front case, is provided with the passage of the working hole that is communicated with described the first chamber and pilot valve at front case.
3. sewage globe valve according to claim 2, it is characterized in that: be furnished with in described the second chamber that the top is pressed on the piston and apply the Returnning spring that forces the piston driving spool to move forward to disconnect import and the outlet of valve pocket to piston, Returnning spring extends along fore-and-aft direction.
4. sewage globe valve according to claim 2 is characterized in that: described piston have that the pressure-bearing surface corresponding with liquid in the second chamber have greater than spool with the second chamber in pressure-bearing surface corresponding to liquid.
5. sewage globe valve according to claim 2 is characterized in that: offer the emergent pollutant exhaust hole that is connected with described the second chamber on the described middle shell, the removable plug that is connected with in the emergent pollutant exhaust hole.
6. sewage globe valve according to claim 2, it is characterized in that: be installed with the electrical heating rod that heats for the liquid to the second chamber on the described middle shell, this electrical heating rod extends in the second chamber of piston cavity.
7. sewage globe valve according to claim 6, it is characterized in that: be installed with temperature controlling device on the described middle shell, temperature controlling device comprises the temperature transducer for detection of fluid temperature in described the second chamber, and the signal output part of temperature transducer is connected with the switch for the work of control electrical heating rod.
8. each described sewage globe valve in 7 according to claim 1, it is characterized in that: described pilot valve is the pilot solenoid valve of Electromagnetic Control, pilot solenoid valve have for suction port and the air outlet of working hole switched conductive, also be provided with working hole and suction port and the timing device of relief opening switched conductive time for the control pilot valve on the described pilot solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310009676.2A CN103075522B (en) | 2013-01-11 | 2013-01-11 | Drainage stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310009676.2A CN103075522B (en) | 2013-01-11 | 2013-01-11 | Drainage stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103075522A true CN103075522A (en) | 2013-05-01 |
| CN103075522B CN103075522B (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310009676.2A Active CN103075522B (en) | 2013-01-11 | 2013-01-11 | Drainage stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103075522B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005977A (en) * | 2017-11-08 | 2018-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of hydraulic buttery valve with temperature-monitoring function |
| CN108915639A (en) * | 2018-06-19 | 2018-11-30 | 三峡大学 | Deep-well exhaust apparatus and method during a kind of oil exploitation |
| CN110748682A (en) * | 2019-07-22 | 2020-02-04 | 宜宾三江机械有限责任公司 | Safety valve with pilot structure |
| CN114618194A (en) * | 2022-03-03 | 2022-06-14 | 曹磊 | Automatic change chemical industry filter equipment |
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| CN203009858U (en) * | 2013-01-11 | 2013-06-19 | 新乡平原航空液压设备有限公司 | Pollution discharging stop valve |
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| CN2208128Y (en) * | 1994-09-29 | 1995-09-20 | 内蒙古液压技术研究所 | Water return automatic open and close valve for pressureless boilers |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005977A (en) * | 2017-11-08 | 2018-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of hydraulic buttery valve with temperature-monitoring function |
| CN108005977B (en) * | 2017-11-08 | 2020-08-18 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Hydraulic electromagnetic valve with temperature monitoring function |
| CN108915639A (en) * | 2018-06-19 | 2018-11-30 | 三峡大学 | Deep-well exhaust apparatus and method during a kind of oil exploitation |
| CN110748682A (en) * | 2019-07-22 | 2020-02-04 | 宜宾三江机械有限责任公司 | Safety valve with pilot structure |
| CN114618194A (en) * | 2022-03-03 | 2022-06-14 | 曹磊 | Automatic change chemical industry filter equipment |
| CN114618194B (en) * | 2022-03-03 | 2023-10-03 | 曹磊 | Automatic change chemical industry filter equipment |
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|---|---|
| CN103075522B (en) | 2015-06-17 |
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