CN201037424Y - Electricity-liquid control change-over valve for hydraulic support - Google Patents
Electricity-liquid control change-over valve for hydraulic support Download PDFInfo
- Publication number
- CN201037424Y CN201037424Y CNU2006201400055U CN200620140005U CN201037424Y CN 201037424 Y CN201037424 Y CN 201037424Y CN U2006201400055 U CNU2006201400055 U CN U2006201400055U CN 200620140005 U CN200620140005 U CN 200620140005U CN 201037424 Y CN201037424 Y CN 201037424Y
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- valve
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- electromagnet
- spring
- seat
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Abstract
The utility model provides an electro-hydraulic control directional valve for a hydraulic support, which comprises an electromagnet, a priority valve and a main control valve from the top to the bottom and all the three valves have two parts which are the same in structure inside; the electromagnet valve body is provided an upper seat, a lower seat, a coil, a movable iron core, an electromagnet valve handle, a copper backing, an upper small sleeve and a lower small sleeve, a spring 1, a cushioning device and a water and dust-proof socket device of the utility model arranged on one side; a chamber A, a chamber B, a chamber O and a chamber P, an intake chamber at the side of B and a intake chamber at the side of A , a return chamber at the side of B and a return chamber at the side of A are arranged in the priority valve which is also provided with a screw plug , a spring 2, a spring seat, an intake valve ball, a supporting rod, an intake valve sleeve, a return valve sleeve, a priority valve handle, a return valve sleeve, a nut slightly adjusting device and a lever mechanism inside; a choke plug is arranged in P chamber; the main control valve body is provided with a working chamber which is pocketed with return valve core components, the valve seat, a cylinder valve core, a loosing connector with a spring 3 and a pressing sleeve. The utility model can satisfy the requirement for self-intake hydraulic support and has lower manufacturing cost.
Description
One, technical field
The utility model relates to a kind of electric-hydraulic control reversing valve, refers in particular to a kind of electrohydraulic controlled reversal valve in use for hydraulic support that is used for the coal mine hydraulic supporting computer control system.
Two, background technology
At present owing to colliery high-yield and high-efficiency reason, the hydraulic support computer control system is just in the more and more uses of each big mineral bureau, and domestic electrohydraulic controlled reversal valve in use for hydraulic support is blank, other industry can't guarantee bad working environment and explosion-proof performance requirement under the coal mine again with electromagnetic valve, so need whole imports, because the import mine hydraulic bracket costs an arm and a leg with electric-hydraulic control reversing valve, maintenance service is not in place, presses for a kind of homemade mine hydraulic bracket and comes the import substitution product with electric-hydraulic control reversing valve.
Three, utility model content
The purpose of this utility model is to provide a kind of electrohydraulic controlled reversal valve in use for hydraulic support of coal mine hydraulic supporting computer control system, and it can satisfy the instructions for use of self-feed hydraulic support, and manufacturing cost is lower again.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of electrohydraulic controlled reversal valve in use for hydraulic support, it is assembled from top to bottom by electromagnet, pilot valve, main control valve, and two identical parts of structure are all arranged in electromagnet, pilot valve, the main control valve; In every part, be provided with down the seat and the seat of honour in the electromagnet valve body, coil and moving iron core, the electromagnet valve rod is connected in one by screw thread and moving iron core, the effective active length of rotation threaded adjusting electromagnet valve rod, in moving iron core both sides copper backing is set, electromagnet valve rod top and the bottom respectively are with little cover and following little cover, go up the copper backing that little cover withstands moving iron core upside, in the little cover spring one is housed down, spring one withstands the copper backing of moving iron core downside, be provided with an opened gap between following and the seat of honour, be provided with buffer at electromagnet valve rod epicoele, electromagnet valve body one side is provided with dustproof and waterproof intrinsic safety type socket device; Have A chamber and B chamber in the pilot valve body, zero chamber and P chamber, B side admission chamber and A side admission chamber, the B side returns sap cavity and the A side is returned sap cavity, B side admission chamber is communicated with A side admission chamber, the B side is returned sap cavity and is returned sap cavity with the A side and be communicated with, in every part, screw plug is set in the pilot valve body, place spring two in the screw plug, withstand spring base on the spring two, place the feed liquor valve ball on the spring base, place push rod on the feed liquor valve ball, push rod is with the feed liquor valve pocket outward, withstand back the liquid valve ball on the push rod, return and place the pilot valve valve rod on the liquid valve ball, the pilot valve valve rod is with liquid return valve jacket outward, the pilot valve valve rod is connected with leverage by the screw micromatic setting, and the P chamber is built-in with choke plug; In every part, the main control valve valve body has working chamber, and the back fluid spool assembly of packing in the working chamber, valve seat and tube spool are tightened the active joint that has spring three, between valve seat and the active joint gland are arranged; The electromagnet valve rod contacts with leverage, and A chamber in the pilot valve body and B chamber communicate with working chamber in the main control valve valve body.
The operating principle of this electric-hydraulic control reversing valve is summarized as follows: (1) when applying a DC voltage (12V) and electric current (110mA) to coil, moving iron core overcomes spring force, drives the electromagnet valve rod that links to each other with iron core and moves downward, and has applied a power downwards.Owing to the effect of spring force, spring one will move iron core and back down, and drive the electromagnet valve rod simultaneously and get back to original position when outage.(2) when electromagnet is powered, the electromagnet valve rod applies a power to leverage, produce a bigger power by leverage, pushing back the liquid valve ball by the pilot valve valve rod closes the A side and returns the sap cavity mouth, back down the feed liquor valve ball by push rod, P chamber highly pressurised liquid process choke plug enters the A chamber to the main control valve feed flow from the gap location of feed liquor valve ball and feed liquor valve pocket; When electromagnet was stopped power supply, the feed liquor valve ball is return and the sealing of feed liquor valve pocket under spring force and hydraulic fluid effect, and backed down back the liquid valve ball by push rod, and hydraulic fluid flows back to emulsion box from the gap location that returns liquid valve ball and feed liquor valve pocket from the O chamber.Because B side admission chamber is communicated with A side admission chamber, the B side is returned sap cavity and is returned chamber liquid with the A side and be communicated with, and it is the same that in like manner opposite side applies a power working condition.(3) when from pilot valve A chamber feed liquor to back fluid spool assembly feed flow, promoting the back fluid spool assembly moves downward, the back fluid spool assembly seals with tube spool upper surface earlier, continue then to move downward, overcome spring force, pilot valve P chamber liquid enters and flows out through the tube spool from a gland and a tube spool gap location from active joint, to bracket upright post or jack admission chamber feed flow setting prop or stretch out, simultaneously column or jack return that the working hole interface returns liquid under sap cavity and the main control valve, return the liquid emulsion box through main control valve O chamber.On the contrary, when from pilot valve B chamber feed liquor to back fluid spool assembly feed flow, realize that then post or withdrawal fall in column or jack.It can satisfy the instructions for use of self-feed hydraulic support, and manufacturing cost is lower again.
Four, description of drawings
Fig. 1 is the present embodiment front section view.
Fig. 2 is an electromagnet front section view shown in Figure 1.
Fig. 3 is a pilot valve front section view shown in Figure 1.
Fig. 4 is a C-C sectional view among Fig. 3.
Fig. 5 is a D-D sectional view among Fig. 3.
Fig. 6 is a main control valve front section view shown in Figure 1.
Among the figure: 1, electromagnet, 2, pilot valve, 3, main control valve; 11, electromagnet valve body, 12, following, 13, little cover down, 14, spring one, 15, copper backing, 16, coil, 17, moving iron core, 18, the seat of honour, 19, go up little cover, 110, the electromagnet valve rod, 112, buffer, 212, dustproof and waterproof intrinsic safety type socket device; 21, pilot valve body, 22, screw plug, 23, spring two, 24, spring base, 25, the feed liquor valve ball, 26, feed liquor valve pocket, 27, push rod, 28, return the liquid valve ball, 29, the pilot valve valve rod, 210, liquid return valve jacket, 211, leverage, 212, the screw micromatic setting, 213, choke plug; 31, main control valve valve body, 32, the back fluid spool assembly, 23, valve seat, 24, the tube spool, 25, gland, 26, spring three.
Five, the specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the good effect of the utility model and generation is remake description.
Referring to Fig. 1-Fig. 6, a kind of electrohydraulic controlled reversal valve in use for hydraulic support, it is assembled from top to bottom by electromagnet 1, pilot valve 2, main control valve 3, and two identical parts of structure are all arranged in electromagnet 1, pilot valve 2, the main control valve 3; In every part, be provided with down the seat 12 and the seat of honour 18 in the electromagnet valve body 11, coil 16 and moving iron core 17, electromagnet valve rod 110 is connected in one by screw thread and moving iron core 17, rotation threaded adjusting electromagnet valve rod 110 effective active lengths, in moving iron core 17 both sides copper backing 15 is set, electromagnet valve rod 110 top and the bottom respectively are with little cover 19 and following little cover 13, go up the copper backing 15 that little cover 19 withstands moving iron core 17 upsides, in the little cover 13 spring 1 is housed down, spring 1 withstands the copper backing 15 of moving iron core 17 downsides, between following 12 and the seat of honour 18, be provided with an opened gap, be provided with buffer 111 at electromagnet valve rod 110 epicoeles, electromagnet valve body 11 1 sides are provided with dustproof and waterproof intrinsic safety type socket device 112; Have A chamber and B chamber in the pilot valve body 21, chamber and P chamber, B side admission chamber and A side admission chamber, the B side returns sap cavity and the A side is returned sap cavity, B side admission chamber is communicated with A side admission chamber, the B side is returned sap cavity and is returned sap cavity with the A side and be communicated with, in every part, screw plug 22 is set in the pilot valve body 21, place spring 2 23 in the screw plug 22, withstand spring base 24 on the spring 2 23, place feed liquor valve ball 25 on the spring base 24, place push rod 27 on the feed liquor valve ball 25, the push rod 27 outer feed liquor valve pockets 26 that are with, withstand back liquid valve ball 28 on the push rod 27, return and place pilot valve valve rod 29 on the liquid valve ball 28, the pilot valve valve rod 29 outer liquid return valve jackets 210 that are with, pilot valve valve rod 29 is connected with leverage 211 by screw micromatic setting 212, and the P chamber is built-in with choke plug 213; In every part, main control valve valve body 31 has working chamber, and the back fluid spool assembly 32 of packing in the working chamber, valve seat 33 and tube spool 34 are tightened the active joint 37 that has spring 3 36, between valve seat 33 and the active joint 37 gland 35 are arranged; Electromagnet valve rod 110 contacts with leverage 211, and A chamber in the pilot valve body 21 and B chamber communicate with working chamber in the main control valve valve body 31.
Referring to Fig. 3, described feed liquor valve ball 25 and time liquid valve ball 28 are Ceramic Balls, have ball sword hermetically-sealed construction.
Referring to Fig. 3, described leverage 211 is 1: 10.
Owing to all adopt emulsion liquid-feed at present under coal mine, general steel ball is easy to get rusty to be caused pilot valve to damage can not working, and this valve feed liquor valve ball 25 and return liquid valve ball 28 and all adopt the sealing of Ceramic Balls swords has effectively guaranteed antirust and increased sealing intensity; Owing to need intrinsic safety voltage under the coal mine, the operational forces that electromagnet 1 produces is less, and it is very difficult directly to back down feed liquor valve ball 25, and this valve adopts 1: 10 leverage effectively to improve moment; Feed liquor valve ball 28 has the operational forces that pressure balancing structure adapts to electromagnet 1 with pilot valve valve rod 29; Adopt choke plug 213 effectively to reduce impact; Because this valve difficulty of processing is big, length tolerance requires quite strict, adopts screw micromatic setting 212 to regulate length requirement.Moving iron core 17 is made by special pure iron in the electromagnet 1, stable performance, electromagnet valve rod 110 is connected in one by screw thread and moving iron core 17, can be by rotation threaded adjusting electromagnetism valve rod 110 effective active lengths, adjusting suction size, both sides increased copper backing 15 at moving iron core about in the of 17, play separated magnetic effect, between following 12 and the seat of honour 18, be provided with an opened gap, increased electromagnetic force, be provided with buffer 111 at electromagnet valve rod 110 epicoeles, play buffering and availablely at the trial manually electromagnet valve rod 110 is applied power effect electromagnet by rubber ring, electromagnet valve body 11 1 sides are provided with dustproof and waterproof intrinsic safety type socket device 112, can guarantee bad working environment requirement under the coal mine.Main control valve 3 back fluid spool assemblies 32 and tube spool 34 adopt rubber seal, and it is strong to seal reliable stain resistance, adopts active joint 37, helps the plug-in mounting of joint, can be from the supporting use of 80L/min to 500L/min according to hydraulic support functional requirement flow.
Require electrohydraulic controlled reversal valve in use for hydraulic support according to cradling function, can some electrohydraulic controlled reversal valve in use for hydraulic support be composed in series the electric-hydraulic control reversing valve group, also the 31 whole processing of main control valve valve body can be assembled into monolithic electric-hydraulic control reversing valve group by double-screw bolt.
Claims (3)
1. electrohydraulic controlled reversal valve in use for hydraulic support, it is characterized in that: it is assembled from top to bottom by electromagnet (1), pilot valve (2), main control valve (3), all have in electromagnet (1), pilot valve (2), the main control valve (3) structure identical two partly; In every part, be provided with down the seat (12) and the seat of honour (18) in the electromagnet valve body (11), coil (16) and moving iron core (17), electromagnet valve rod (110) is connected in one by screw thread and moving iron core (17), rotation threaded adjusting electromagnet valve rod (110) is active length effectively, in moving iron core (17) both sides copper backing (15) is set, electromagnet valve rod (110) top and the bottom respectively are with little cover (19) and following little cover (13), go up the copper backing (15) that little cover (19) withstands moving iron core (17) upside, in the little cover (13) spring one (14) is housed down, spring one (14) withstands the copper backing (15) of moving iron core (17) downside, between following (12) and the seat of honour (18), be provided with an opened gap, be provided with buffer (111) at electromagnet valve rod (110) epicoele, electromagnet valve body (11) one sides are provided with dustproof and waterproof intrinsic safety type socket device (112); Have A chamber and B chamber in the pilot valve body (21), O chamber and P chamber, B side admission chamber and A side admission chamber, the B side returns sap cavity and the A side is returned sap cavity, B side admission chamber is communicated with A side admission chamber, the B side is returned sap cavity and is returned sap cavity with the A side and be communicated with, in every part, screw plug (22) is set in the pilot valve body (21), place spring two (23) in the screw plug (22), withstand spring base (24) on the spring two (23), spring base (24) is gone up and is placed feed liquor valve ball (25), feed liquor valve ball (25) is gone up and is placed push rod (27), the outer feed liquor valve pocket (26) that is with of push rod (27), withstand back liquid valve ball (28) on the push rod (27), return liquid valve ball (28) and go up placement pilot valve valve rod (29), the outer liquid return valve jacket (210) that is with of pilot valve valve rod (29), pilot valve valve rod (29) is connected with leverage (211) by screw micromatic setting (212), and the P chamber is built-in with choke plug (213); In every part, main control valve valve body (31) has working chamber, pack in the working chamber back fluid spool assembly (32), valve seat (33) and tube spool (34) are tightened the active joint (37) that has spring three (36), between valve seat (33) and the active joint (37) gland (35) are arranged; Electromagnet valve rod (110) contacts with leverage (211), and A chamber in the pilot valve body (21) and B chamber communicate with working chamber in the main control valve valve body (31).
2. electrohydraulic controlled reversal valve in use for hydraulic support according to claim 1 is characterized in that: described feed liquor valve ball (25) and time liquid valve ball (28) are Ceramic Balls.
3. electrohydraulic controlled reversal valve in use for hydraulic support according to claim 1 is characterized in that: described leverage (211) is 1: 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201400055U CN201037424Y (en) | 2006-11-13 | 2006-11-13 | Electricity-liquid control change-over valve for hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201400055U CN201037424Y (en) | 2006-11-13 | 2006-11-13 | Electricity-liquid control change-over valve for hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201037424Y true CN201037424Y (en) | 2008-03-19 |
Family
ID=39209941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201400055U Expired - Lifetime CN201037424Y (en) | 2006-11-13 | 2006-11-13 | Electricity-liquid control change-over valve for hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201037424Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465087A (en) * | 2016-02-05 | 2016-04-06 | 天津华宁电子有限公司 | Manual-automatic integrated reversing valve |
| CN106151678A (en) * | 2014-10-13 | 2016-11-23 | 盾安美斯泰克股份有限公司 | Linear package for two-step evolution miniature valve |
| WO2020093869A1 (en) * | 2018-11-09 | 2020-05-14 | 太原理工大学 | Water base proportional valve and control method thereof |
| CN113294581A (en) * | 2021-05-13 | 2021-08-24 | 温州市有名机械科技有限公司 | Mining intrinsically safe electromagnetic pilot valve |
-
2006
- 2006-11-13 CN CNU2006201400055U patent/CN201037424Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151678A (en) * | 2014-10-13 | 2016-11-23 | 盾安美斯泰克股份有限公司 | Linear package for two-step evolution miniature valve |
| CN106151678B (en) * | 2014-10-13 | 2019-09-10 | 盾安美斯泰克股份有限公司 | Linear package for two-step evolution miniature valve |
| CN105465087A (en) * | 2016-02-05 | 2016-04-06 | 天津华宁电子有限公司 | Manual-automatic integrated reversing valve |
| WO2020093869A1 (en) * | 2018-11-09 | 2020-05-14 | 太原理工大学 | Water base proportional valve and control method thereof |
| CN113294581A (en) * | 2021-05-13 | 2021-08-24 | 温州市有名机械科技有限公司 | Mining intrinsically safe electromagnetic pilot valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090520 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |