CN203835842U - Electromagnetic unloading valve for pump station - Google Patents
Electromagnetic unloading valve for pump station Download PDFInfo
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- CN203835842U CN203835842U CN201420205898.1U CN201420205898U CN203835842U CN 203835842 U CN203835842 U CN 203835842U CN 201420205898 U CN201420205898 U CN 201420205898U CN 203835842 U CN203835842 U CN 203835842U
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- liquid road
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- 239000007788 liquid Substances 0.000 claims abstract description 98
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000005086 pumping Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 210000004907 gland Anatomy 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 2
- 210000003746 feather Anatomy 0.000 description 10
- 239000000839 emulsion Substances 0.000 description 8
- 239000012530 fluid Substances 0.000 description 6
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to an electromagnetic unloading valve for a pump station. The electromagnetic unloading valve comprises a main valve component, a mechanical pilot valve component and an electromagnetic pilot valve component, the main valve component, the mechanical pilot valve component and the electromagnetic pilot valve component are sequentially connected, a mining explosive-proof electromagnet is mounted on the electromagnetic pilot valve component, and a control liquid channel in the electromagnetic pilot valve component is connected with a control liquid channel in the main valve component. The electromagnetic unloading valve is compact and reasonable in structure and convenient to operate, electric control and hydraulic control are both achieved, unloading pressure of the unloading valve can be freely set through a control system, no-load startup and no-load pump stopping can be achieved, and mechanical hydraulic-control unloading can be automatically completed through the unloading valve under the condition that an electric control system fails or is powered off.
Description
Technical field
The utility model relates to pumping plant hydraulic pressure Unloading Control technical field, and the electric hydraulic control feather valve of emulsion power pack for especially a kind of coal mine fully-mechanized mining working possesses the electric liquid feather valve of hydraulic control and automatically controlled two kinds of modes.
Background technique
Current feather valve has mechanical type and electrolyte type; mechanical type feather valve can only be realized hydraulic control unloading; and pressure surge value is larger; owing to can only passing through manual tune unloading pressure, pressure regulation step complexity is loaded down with trivial details simultaneously, in actual use often because pressure regulation in time; there is load startup and load termination of pumping; can not realize No Load Start and shut down with unloaded, affect greatly the working life of pumping plant, and electrical network is produced greatly and impacted.In prior art, also have a kind of electrolyte type feather valve, it can only realize automatically controlled unloading or hydraulic control unloading by switching, and when its automatically controlled unloading is malfunctioning or when automatical control system power-off, feather valve cisco unity malfunction.
Also the feather valve that has automatically controlled and hydraulic control in prior art and deposit, can realize unloaded start and stop, also the normal work can realize without electricity time, but it is all to introduce pumping plant high pressure liquid by electro hydraulic valve control, thereby the action that promotes its electromagnetic priority valve realizes the unloading of feather valve, because its pilot valve must be connected with pumping plant high pressure liquid delivery outlet, itself be subject to the pressure pulsation of pumping plant to affect larger, some even adopts external accumulator to carry out its pressure pulsation of balance, simultaneously because it must adopt externally connected type pipeline, overall structure more complicated, take up room large, install and use and be subject to very large restriction.
Model utility content
The applicant is for the shortcoming in above-mentioned existing production technology, a kind of pumping plant electromagnetic unloading valve rational in infrastructure is provided, thereby make it without external control liquid road, take up room little, keep in repair easy to use, can realize automatically controlled unloading and hydraulic control unloading and coexist, and in the time of power-off, also can automatically realize mechanical hydraulic control unloading.
The technological scheme that the utility model adopts is as follows:
A kind of pumping plant electromagnetic unloading valve, comprise the main valve assembly, mechanical pilot valve assembly and the electromagnetic pilot valve assembly that connect successively, on described electromagnetic pilot valve assembly, mine explosion-suppression electromagnet is installed, the control liquid road in described electromagnetic pilot valve assembly is connected with the control liquid road in main valve assembly.
Further improvement as technique scheme:
The structure of described main valve assembly is: comprise valve body of main valve, described valve body of main valve middle part is provided with liquid entering hole, described valve body of main valve one sidepiece is respectively arranged with liquid outlet joint and unloading port joint, and the other side of described valve body of main valve is respectively arranged with accumulator joint and technique plug; In described valve body of main valve, by main valve seat, main valve plug is installed, filter ruffle installed thrust piston was passed through in described main valve plug bottom, and described thrust piston bottom is provided with guide sleeve, in described guide sleeve, is provided with main spool spring, and described guide sleeve bottom is main valve screw plug; Be positioned at valve body of main valve top and be provided with one-way valve seat, nonreturn valve core is installed in described one-way valve seat, check valve spring is installed on described nonreturn valve core top, and at its top, one-way valve screw plug is installed;
In described main valve assembly, be respectively arranged with Si Tiaoye road, form first at valve body of main valve end face and control liquid road, the second control liquid road, the 3rd control liquid road and the 4th control liquid road;
The structure of described mechanical pilot valve assembly is: comprise mechanical pilot valve body, mechanical pilot valve valve seat is installed in described mechanical pilot valve body, on described mechanical pilot valve valve seat, mechanical pilot valve core is installed, described mechanical pilot valve core is outside equipped with middle cover, described middle cover top is provided with copper sheathing, sliding sleeve is installed in described copper sheathing, be positioned at sliding sleeve top, by locking nut and gland nut, plug be installed, on described plug, cover has butterfly spring group, be positioned at butterfly spring group outer peripheral surface and mechanical pilot valve body top cover and have cylinder, described cylinder top is installed and is adjusted swivel nut, a side that is arranged in mechanical pilot valve body is respectively arranged with choke plug, choke plug, lower choke plug and the 5th control liquid road, and described middle choke plug is communicated with mechanical pilot valve liquid outlet,
The structure of described electromagnetic pilot valve assembly is: comprise joining plate, on described joining plate, be provided with step, be positioned at First terrace and be fixed with electromagnetic pilot valve body by screw, electromagnetic pilot valve core is installed in described electromagnetic pilot valve body, in described electromagnetic pilot valve body, also by conical guiding sleeve, push rod is installed, mounting ball valve seat is overlapped by distance in described push rod top, steel ball spool is installed on described ball valve seat, described ball valve seat top is also by back-up ring mounting spring seat, mounting spring in described spring seat, and at spring top mounting spring shell, described spring case top is installed and is compressed screw plug, described push rod bottom installed thrust steel ball, be positioned at joining plate middle part and be provided with lever by pin, described lever one end is by lever nut and lever screw and thrust steel ball butt, the other end of described lever is provided with electromagnetism extension bar, described electromagnetism extension bar is through fixed cover, be positioned on the second step face of joining plate and mine explosion-suppression electromagnet be installed, described electromagnetism extension bar top and mine explosion-suppression electromagnet butt, described electromagnetic pilot valve body sidepiece arranges respectively the 6th and controls liquid road, the 7th control liquid road and the 8th control liquid road, be positioned at joining plate bottom sealing plate is installed,
Described first controls liquid road is communicated with upper choke plug, described second controls liquid Lu Yuzhong choke plug is communicated with, the mechanical pilot valve liquid outlet that described middle choke plug is communicated with is controlled liquid road with the 6th of electromagnetic pilot valve assembly and is communicated with, and the 8th control liquid road that described the 3rd control liquid road is communicated to electromagnetic pilot valve assembly by the 5th control liquid road is communicated with;
The right-hand member of described main valve assembly is fixed with mechanical pilot valve assembly by fastening piece, the right-hand member of described mechanical pilot valve assembly is fixed by the bolt on mounting plate and electromagnetic pilot valve assembly, has been threaded connection mine explosion-suppression electromagnet on the joining plate of described electromagnetic pilot valve assembly.
The beneficial effects of the utility model are as follows:
The utility model compact structure, reasonable, easy and simple to handle, can realize automatically controlled and hydraulic control and deposit, its unloading pressure can be set arbitrarily by control system, realize No Load Start and unloaded termination of pumping, and at automatical control system under malfunctioning or powering-off state feather valve can automatically complete mechanical hydraulic control unloading.
Main valve assembly described in the utility model, mechanical pilot valve assembly, the each portion of electromagnetic pilot valve assembly independently, connect by fastening piece between each assembly, and each assembly liquid road only has the liquid road of control to communicate, and manufacture simply, and Installation and Debugging are convenient.
The utility model is directly controlled first drain road and is realized the unloading of main valve by electromagnet, without by the outside pressure liquid of introducing of hydraulic control valve control, do not have the impact of pressure pulsation, and unloading action is safe and reliable.Structure more position is compact, failure rate is low.
The utility model is controlled control group valve assembly by one group of machinery pilot valve assembly and one group of electromagnetic pilot valve assembly simultaneously, and low according to whose pressure, who controls main valve.In the time of electromagnetic unloading valve inefficacy or power-off, automatically realize mechanical pilot valve control, electromagnetic priority valve is set unloading pressure should be a shade below mechanical pilot valve set pressure.
Electromagnetic priority valve is directly controlled first drain road by electromagnet, thereby controls main valve events, realizes unloading and the recovery of main valve.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the plan view (half sectional view) of the utility model main valve assembly.
Fig. 3 is the side view of Fig. 2.
Fig. 4 is the plan view (whole-cutaway view) of the utility model machinery pilot valve assembly.
Fig. 5 is the side view of Fig. 4.
Fig. 6 is the plan view (whole-cutaway view) of the utility model electromagnetic priority valve.
Wherein: 1, main valve assembly; 101, accumulator joint; 102, technique plug; 103, one-way valve screw plug; 104, check valve spring; 105, nonreturn valve core; 106, one-way valve seat; 107, liquid entering hole; 108, main valve seat; 109, main valve plug; 110, first control liquid road; 111, cross filter ruffle; 112, second control liquid road; 113, the 3rd control liquid road; 114, thrust piston; 115, the 4th control liquid road; 116, main spool spring; 117, guide sleeve; 118, main valve screw plug; 119, valve body of main valve; 120, liquid outlet joint; 121, unloading port joint; 2, mechanical pilot valve assembly; 201, adjust swivel nut; 202, cylinder; 203, butterfly spring group; 204, plug; 205, gland nut; 206, locking nut; 207, sliding sleeve; 208, copper sheathing; 209, middle cover; 210, mechanical pilot valve liquid outlet; 211, mechanical pilot valve core; 212, mechanical pilot valve valve seat; 213, mechanical pilot valve body; 214, the 5th control liquid road; 215, lower choke plug; 216, middle choke plug; 217, upper choke plug; 218, mounting plate; 219, bolt; 3, electromagnetic pilot valve assembly; 301, electromagnetic pilot valve core; 302, electromagnetic pilot valve body; 303, screw; 304, joining plate; 305, compress screw plug; 306, spring case; 307, spring; 308, spring seat; 309, steel ball spool; 310, back-up ring; 311, ball valve seat; 312, distance cover; 313, push rod; 314, guide sleeve; 315, fixed cover; 316, electromagnetism extension bar; 317, sealing plate; 318, lever; 319, pin; 320, thrust steel ball; 321, lever screw; 322, lever nut; 323, the 8th control liquid road; 324, the 7th control liquid road; 325, the 6th control liquid road; 4, mine explosion-suppression electromagnet.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
As shown in Figure 1, the pumping plant electromagnetic unloading valve of the present embodiment, comprise the main valve assembly 1, mechanical pilot valve assembly 2 and the electromagnetic pilot valve assembly 3 that connect successively, mine explosion-suppression electromagnet 4 is installed on electromagnetic pilot valve assembly 3, and the control liquid road in electromagnetic pilot valve assembly 3 is connected with the control liquid road in main valve assembly 1.
As shown in Figures 2 and 3, the structure of main valve assembly 1 is: comprise valve body of main valve 119, valve body of main valve 119 middle parts are provided with liquid entering hole 107, valve body of main valve 119 1 sidepieces are respectively arranged with liquid outlet joint 120 and unloading port joint 121, and the other side of valve body of main valve 119 is respectively arranged with accumulator joint 101 and technique plug 102; In valve body of main valve 119, by main valve seat 108, main valve plug 109 is installed, filter ruffle 111 installed thrust pistons 114 were passed through in main valve plug 109 bottoms, thrust piston 114 bottoms are provided with guide sleeve 117, are provided with main spool spring 116 in guide sleeve 117, and guide sleeve 117 bottoms are main valve screw plug 118; Be positioned at valve body of main valve 119 tops and be provided with one-way valve seat 106, the interior installation nonreturn valve core 105 of one-way valve seat 106, check valve spring 104 is installed on nonreturn valve core 105 tops, and at its top, one-way valve screw plug 103 is installed.
In main valve assembly 1, be respectively arranged with Si Tiaoye road, form first at valve body of main valve 119 end faces and control liquid road 110, the second control liquid road 112, the 3rd control liquid road 113 and the 4th control liquid road 115.
As shown in Figure 4 and Figure 5, the structure of machinery pilot valve assembly 2 is: comprise mechanical pilot valve body 213, the mechanical pilot valve valve seat 212 of the machinery interior installation of pilot valve body 213, on machinery pilot valve valve seat 212, mechanical pilot valve core 211 is installed, machinery pilot valve core 211 is outside equipped with middle cover 209, middle cover 209 tops are provided with copper sheathing 208, the interior installation sliding sleeve 207 of copper sheathing 208, be positioned at sliding sleeve 207 tops, by locking nut 206 and gland nut 205, plug 204 be installed, on plug 204, cover has butterfly spring group 203, be positioned at butterfly spring group 203 outer peripheral surfaces and mechanical pilot valve body 213 tops covers and have cylinder 202, cylinder 202 tops are installed and are adjusted swivel nut 201, a side that is arranged in mechanical pilot valve body 213 is respectively arranged with choke plug 217, choke plug 216, lower choke plug 215 and the 5th control liquid road 214, and middle choke plug 216 is communicated with mechanical pilot valve liquid outlet 210.
As shown in Figure 6, the structure of electromagnetic pilot valve assembly 3 is: comprise joining plate 304, on joining plate 304, be provided with step, be positioned at First terrace and be fixed with electromagnetic pilot valve body 302 by screw 303, the interior installation electromagnetic pilot of electromagnetic pilot valve body 302 valve core 301, in electromagnetic pilot valve body 302, also by conical guiding sleeve 314, push rod 313 is installed, 312 mounting ball valve seats 311 are overlapped by distance in push rod 313 tops, steel ball spool 309 is installed on ball valve seat 311, ball valve seat 311 tops are also by back-up ring 310 mounting spring seats 308, the interior mounting spring 307 of spring seat 308, and at spring 307 top mounting spring shells 306, spring case 306 tops are installed and are compressed screw plug 305, push rod 313 bottom installed thrust steel balls 320, be positioned at joining plate 304 middle parts and be provided with lever 318 by pin 319, lever 318 one end are by lever nut 322 and lever screw 321 and thrust steel ball 320 butts, the other end of lever 318 is provided with electromagnetism extension bar 316, electromagnetism extension bar 316 is through fixed cover 315, be positioned on the second step face of joining plate 304 and mine explosion-suppression electromagnet 4 be installed, electromagnetism extension bar 316 tops and mine explosion-suppression electromagnet 4 butts, electromagnetic pilot valve body 302 sidepieces arrange respectively the 6th and control liquid road 325, the 7th control liquid road 324 and the 8th control liquid road 323, be positioned at joining plate 304 bottoms sealing plate 317 is installed.
First controls liquid road 110 is communicated with upper choke plug 217, second controls liquid road 112 is communicated with middle choke plug 216, the mechanical pilot valve liquid outlet 210 that middle choke plug 216 is communicated with is controlled liquid road 325 with the 6th of electromagnetic pilot valve assembly 3 and is communicated with, and the 8th control liquid road 323 that the 3rd control liquid road 113 is communicated to electromagnetic pilot valve assembly 3 by the 5th control liquid road 214 is communicated with.
The right-hand member of main valve assembly 1 is fixed with mechanical pilot valve assembly 2 by fastening piece, the right-hand member of machinery pilot valve assembly 2 is fixing with electromagnetic pilot valve assembly 3 by the bolt 219 on mounting plate 218, on the joining plate 304 of electromagnetic pilot valve assembly 3, has been threaded connection mine explosion-suppression electromagnet 4.
The utlity model has two kinds of working methods of electromagnetism hydraulic control and mechanical hydraulic control.
Practical work process is as follows:
When normal work, high-pressure emulsion from emulsion pump enters in valve body of main valve 119 through main valve assembly 1 liquid entering hole 107, be divided into two groups of working solutions in parallel, upwards push nonreturn valve core 105 open, then flow out through liquid outlet joint 120, forwards transfusion, push the emulsified liquid of one-way valve open simultaneously, can flow through through the control liquid road on right side, high press juice chamber the upper choke plug 217 of mechanical pilot valve assembly 2, arrive sliding sleeve 207 cavity of resorptions of mechanical pilot valve assembly 2, give 211 1 of mechanical pilot valve cores thrust upwards.Flow through through the middle control liquid road middle choke plug 216 of mechanical pilot valve assembly 2 of the high-pressure emulsion that carrys out self-pumping arrives middle cover 209 inner chambers, gives 211 1 downward thrusts of mechanical pilot valve core, maintains closing of mechanical pilot valve core 211.This liquid Lu Huijing middle cover 209 and the gap of the mechanical pilot valve core 211 lower choke plug 215 of flowing through simultaneously, the cavity of resorption that the thrust piston 114 of arrival main valve assembly 1 seals, give 114 1 of thrust pistons thrust upwards, promoting main valve plug 109 closes, the high-pressure emulsion that simultaneously flows to again middle cover 209 can flow to by the control liquid road on middle cover 209 right sides (being mechanical pilot valve liquid outlet 210) the pilot valve filter core of electromagnetic pilot valve assembly 3, finally arrive the top of steel ball spool 309 through filtering Hou Gaiye road, the below of the top of spring case 306 and push rod 313, under pressure now, steel ball spool 309 is in closed condition.Between main valve plug 109 and thrust piston 114, space and unloading port joint 121 are connected, mechanical pilot valve core 211 cavity of resorptions and distance cover 312 chambeies are all connected with this outlet simultaneously, unloading port joint 121 is in atmospheric pressure state, form pressure reduction with the high-pressure emulsion in other each chamber, thereby maintain closing of each valve, ensure the normal feed flow of feather valve.
Working method when electromagnetism unloading: in the time that front support stops using liquid, high pressure liquid outlet is that nonreturn valve core 105 upper cavity pressures rise rapidly, when pressure rise to control system set working pressure time, control system can be given mine explosion-suppression electromagnet 4 opening signals, electromagnet action, electromagnet can be pushed electromagnetism extension bar 316 open and move down, drive lever screw 321 through lever 318 transmissions, lever nut 322, on thrust steel ball 320, move, thereby promote push rod 313 and open steel ball spool 309, now choke plug 215 under the sealing fluid Lu Huijing of thrust piston 114 cavity of resorptions, middle cover 209 inner chambers, pilot valve filter core, distance cover 312, machinery pilot valve core 211 cavity of resorptions enter unloading back to the fluid chamber, the final unloading liquid outlet that arrives flows out, now thrust piston 114 cavity of resorption decompressions, main valve plug 109 moves down together with thrust piston 114 under high-pressure emulsion effect up, main valve plug 109 is opened, realize unloading, nonreturn valve core 105 is closed under hyperbaric chamber pressure simultaneously.In the time that support causes high press juice cavity pressure decline to reach certain value with liquid or system leak again, control system can be given mine explosion-suppression electromagnet 4 shutdown signals, electromagnet action, now, steel ball spool 309 can be closed under spring 307 effects, and then promotion push rod 313, thrust steel ball 320, lever screw 321, lever nut 322, lever 318, 316 resets such as grade of electromagnetism extension bar, closing because of steel ball spool 309 simultaneously, the high pressure liquid that arrives middle cover 209 inner chambers by middle choke plug 216 is known from experience the cavity of resorption that again arrives thrust piston 114, re-establish pressure, under the cooperation of main spool spring 116, on thrust piston 114, move, promoting main valve plug 109 closes, nonreturn valve core 105 is pushed in the continuous rising of supply opening pressure again open, one-way valve opens, recover forwards support feed flow.
Working method when mechanical relief: when automatical control system is malfunctioning or when electromagnet power-off, steel ball spool 309 is all the time in closed condition, even if now front support is without liquid, pressure constantly raises, 309 overflows of steel ball spool also cannot be passed through in the sealing fluid road of thrust piston 114 cavity of resorptions, thereby cannot complete unloading.Now mechanical pilot valve assembly 2 will play a role, along with the continuous rising of high press juice cavity pressure, the fluid pressure that arrives sliding sleeve 207 cavity of resorptions via upper choke plug 217 and then improves constantly, continue to increase to mechanical pilot valve core 211 power upwards, when this reaches when overcoming butterfly spring group 203 and giving the downward power of guide's spool, machinery pilot valve core 211 will be opened, now choke plug 215 under thrust piston 114 cavity of resorption sealing fluid Lu Huijing, by mechanical pilot valve core 211 cavity of resorptions, the final unloading liquid outlet that arrives flows out, now thrust piston 114 cavity of resorption decompressions, main valve plug 109 moves down together with thrust piston under high-pressure emulsion effect up, main valve plug 109 is opened, realize unloading, nonreturn valve core 105 is closed under hyperbaric chamber pressure simultaneously, thereby seal up the highly pressurised liquid in high press juice chamber, remain high pressure conditions, and then maintain the unlatching of mechanical pilot valve core 211, ensure the carrying out of unloaded operation.In the time that support causes high press juice cavity pressure decline to reach certain value with liquid or system leak again, the fluid pressure of sliding sleeve 207 cavity of resorptions is followed decline, giving mechanical pilot valve core 211 power upwards constantly reduces, in the time being less than butterfly spring group 203 and giving the downward power of guide's spool, machinery pilot valve core 211 is closed, the high pressure liquid that arrives middle cover 209 inner chambers by middle choke plug 216 is known from experience the cavity of resorption that again arrives thrust piston 114, re-establish pressure, under the cooperation of main spool spring 116, on thrust piston 114, move, promoting main valve plug 109 closes, nonreturn valve core 105 is pushed in the continuous rising of supply opening pressure again open, one-way valve opens, recover forwards support feed flow.
More than describing is to explanation of the present utility model, is not the restriction to model utility, and the utility model limited range, referring to claim, within protection domain of the present utility model, can be done any type of amendment.
Claims (7)
1. a pumping plant electromagnetic unloading valve, it is characterized in that: comprise the main valve assembly (1), mechanical pilot valve assembly (2) and the electromagnetic pilot valve assembly (3) that connect successively, mine explosion-suppression electromagnet (4) is installed on described electromagnetic pilot valve assembly (3), and the control liquid road in described electromagnetic pilot valve assembly (3) is connected with the control liquid road in main valve assembly (1).
2. pumping plant electromagnetic unloading valve as claimed in claim 1, it is characterized in that: the structure of described main valve assembly (1) is: comprise valve body of main valve (119), described valve body of main valve (119) middle part is provided with liquid entering hole (107), described valve body of main valve (119) one sidepieces are respectively arranged with liquid outlet joint (120) and unloading port joint (121), and the other side of described valve body of main valve (119) is respectively arranged with accumulator joint (101) and technique plug (102); In described valve body of main valve (119), by main valve seat (108), main valve plug (109) is installed, filter ruffle (111) installed thrust piston (114) was passed through in described main valve plug (109) bottom, described thrust piston (114) bottom is provided with guide sleeve (117), in described guide sleeve (117), be provided with main spool spring (116), described guide sleeve (117) bottom is main valve screw plug (118); Be positioned at valve body of main valve (119) top and be provided with one-way valve seat (106), nonreturn valve core (105) is installed in described one-way valve seat (106), check valve spring (104) is installed on described nonreturn valve core (105) top, and at its top, one-way valve screw plug (103) is installed.
3. pumping plant electromagnetic unloading valve as claimed in claim 2, it is characterized in that: in described main valve assembly (1), be respectively arranged with Si Tiaoye road, form first at valve body of main valve (119) end face and control liquid road (110), the second control liquid road (112), the 3rd control liquid road (113) and the 4th control liquid road (115).
4. pumping plant electromagnetic unloading valve as claimed in claim 1, it is characterized in that: the structure of described mechanical pilot valve assembly (2) is: comprise mechanical pilot valve body (213), mechanical pilot valve valve seat (212) is installed in described mechanical pilot valve body (213), the upper mechanical pilot valve core (211) of installing of described mechanical pilot valve valve seat (212), described mechanical pilot valve core (211) is outside equipped with middle cover (209), described middle cover (209) top is provided with copper sheathing (208), sliding sleeve (207) is installed in described copper sheathing (208), be positioned at sliding sleeve (207) top, by locking nut (206) and gland nut (205), plug (204) be installed, the upper cover of described plug (204) has butterfly spring group (203), be positioned at butterfly spring group (203) outer peripheral surface and mechanical pilot valve body (213) top cover and have cylinder (202), described cylinder (202) top is installed and is adjusted swivel nut (201), a side that is arranged in mechanical pilot valve body (213) is respectively arranged with choke plug (217), choke plug (216), lower choke plug (215) and the 5th control liquid road (214), and described middle choke plug (216) is communicated with mechanical pilot valve liquid outlet (210).
5. pumping plant electromagnetic unloading valve as claimed in claim 1, it is characterized in that: the structure of described electromagnetic pilot valve assembly (3) is: comprise joining plate (304), described joining plate is provided with step on (304), be positioned at First terrace and be fixed with electromagnetic pilot valve body (302) by screw (303), electromagnetic pilot valve core (301) is installed in described electromagnetic pilot valve body (302), in described electromagnetic pilot valve body (302), also by conical guiding sleeve (314), push rod (313) is installed, (312) mounting ball valve seat (311) is overlapped by distance in described push rod (313) top, the upper steel ball spool (309) of installing of described ball valve seat (311), described ball valve seat (311) top is also by back-up ring (310) mounting spring seat (308), the interior mounting spring of described spring seat (308) (307), and at spring (307) top mounting spring shell (306), described spring case (306) top is installed and is compressed screw plug (305), described push rod (313) bottom installed thrust steel ball (320), be positioned at joining plate (304) middle part and be provided with lever (318) by pin (319), described lever (318) one end is by lever nut (322) and lever screw (321) and thrust steel ball (320) butt, the other end of described lever (318) is provided with electromagnetism extension bar (316), described electromagnetism extension bar (316) is through fixed cover (315), be positioned on the second step face of joining plate (304) and mine explosion-suppression electromagnet (4) be installed, described electromagnetism extension bar (316) top and mine explosion-suppression electromagnet (4) butt, described electromagnetic pilot valve body (302) sidepiece arranges respectively the 6th and controls liquid road (325), the 7th control liquid road (324) and the 8th control liquid road (323), be positioned at joining plate (304) bottom sealing plate (317) is installed.
6. the pumping plant electromagnetic unloading valve as described in as arbitrary in claim 1-5, it is characterized in that: described first controls liquid road (110) is communicated with upper choke plug (217), described second controls liquid road (112) is communicated with middle choke plug (216), the mechanical pilot valve liquid outlet (210) that described middle choke plug (216) is communicated with is controlled liquid road (325) with the 6th of electromagnetic pilot valve assembly (3) and is communicated with, and the 8th control liquid road (323) that described the 3rd control liquid road (113) is communicated to electromagnetic pilot valve assembly (3) by the 5th control liquid road (214) is communicated with.
7. pumping plant electromagnetic unloading valve as claimed in claim 1, it is characterized in that: the right-hand member of described main valve assembly (1) is fixed with mechanical pilot valve assembly (2) by fastening piece, the right-hand member of described mechanical pilot valve assembly (2) is fixing by the bolt (219) on mounting plate (218) and electromagnetic pilot valve assembly (3), on the joining plate (304) of described electromagnetic pilot valve assembly (3), has been threaded connection mine explosion-suppression electromagnet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205898.1U CN203835842U (en) | 2014-04-25 | 2014-04-25 | Electromagnetic unloading valve for pump station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205898.1U CN203835842U (en) | 2014-04-25 | 2014-04-25 | Electromagnetic unloading valve for pump station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835842U true CN203835842U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420205898.1U Expired - Lifetime CN203835842U (en) | 2014-04-25 | 2014-04-25 | Electromagnetic unloading valve for pump station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835842U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219511A (en) * | 2019-10-29 | 2020-06-02 | 北京天地玛珂电液控制系统有限公司 | Electromagnetic unloading valve for aqueous medium mine |
| CN111271332A (en) * | 2020-02-18 | 2020-06-12 | 中国煤炭科工集团太原研究院有限公司 | High-flow pilot-operated intrinsic safety electromagnetic water replenishing valve for mining emulsion pump station and use method |
| CN114087249A (en) * | 2021-11-18 | 2022-02-25 | 国能神东煤炭集团有限责任公司 | Electro-hydraulic pressure control system and control method |
-
2014
- 2014-04-25 CN CN201420205898.1U patent/CN203835842U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219511A (en) * | 2019-10-29 | 2020-06-02 | 北京天地玛珂电液控制系统有限公司 | Electromagnetic unloading valve for aqueous medium mine |
| CN111271332A (en) * | 2020-02-18 | 2020-06-12 | 中国煤炭科工集团太原研究院有限公司 | High-flow pilot-operated intrinsic safety electromagnetic water replenishing valve for mining emulsion pump station and use method |
| CN111271332B (en) * | 2020-02-18 | 2021-11-12 | 中国煤炭科工集团太原研究院有限公司 | High-flow pilot-operated intrinsic safety electromagnetic water replenishing valve for mining emulsion pump station and use method |
| CN114087249A (en) * | 2021-11-18 | 2022-02-25 | 国能神东煤炭集团有限责任公司 | Electro-hydraulic pressure control system and control method |
| CN114087249B (en) * | 2021-11-18 | 2023-05-26 | 国能神东煤炭集团有限责任公司 | Electrohydraulic pressure control system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WUXI COAL MINE MACHINERY CO., LTD. Free format text: FORMER NAME: WUXI COAL MINE MACHINERY?FACTORY CO.,?LTD. |
|
| CP03 | Change of name, title or address |
Address after: 214000 Huishan Economic Development Zone, Huishan District, Jiangsu, Chang Chang Road, No. 2, No. Patentee after: WUXI COAL MINE MACHINERY Co.,Ltd. Address before: 214000, Chang 2 Garden Road, Huishan Economic Development Zone, Wuxi, Jiangsu, China Patentee before: WUXI COAL MINE MACHINERY Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20140917 |