CN103307310A - Electromagnetic pilot valve - Google Patents
Electromagnetic pilot valve Download PDFInfo
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- CN103307310A CN103307310A CN2013102676616A CN201310267661A CN103307310A CN 103307310 A CN103307310 A CN 103307310A CN 2013102676616 A CN2013102676616 A CN 2013102676616A CN 201310267661 A CN201310267661 A CN 201310267661A CN 103307310 A CN103307310 A CN 103307310A
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- valve
- valve core
- runner
- valve element
- shutoff
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Abstract
The invention discloses an electromagnetic pilot valve which comprises a valve body and a valve element, wherein the valve element comprises an element body with a stepped hole in the middle and provided with a liquid inlet, a liquid control outlet and a liquid return port, a reset mechanism, a rear plug, a valve element seat and a push rod are sequentially arranged in the stepped hole of the valve body in the axial direction, a valve element rod sliding front and back in the axial direction of a valve element hole is arranged in the valve element hole, the length of the valve element rod is larger than the thickness of the valve element seat, a penetrating runner is formed between the valve element rod and the valve element hole, and surface sealing structures are respectively formed on surfaces of a front plug and the rear plug opposite to the valve element seat. The electromagnetic pilot valve adopts a flexible seal structure, a valve element mandrel is placed in the original runner at the center part of the valve element seat, the diameters of the runners and the diameter of the valve element mandrel are increased, and the seal structure can reduce the processing difficulty of the whole valve element.
Description
Technical field
The present invention relates to the hydraulic machinery technical field, particularly relate to a kind of electromagnetic priority valve.
Background technique
The mine hydraulic bracket electrohydraulic control system is one of capital equipment of comprehensive mechanized coal mining automation, hydraulic support electrohydraulic control system uses a kind of electric-hydraulic control reversing valve, selector valve is comprised of main valve and electromagnetic priority valve, electromagnetic priority valve is the pilot stage of commutation main valve, by eletromagnetic-operating or manually-operable, promoting main valve by pressure gauge posts a letter and moves to the enable possition liquid road of hydraulic control main valve is controlled, realize break-make and the switching on its liquid road, then drive hydraulic cylinder piston, finish the compulsory exercise of hydraulic support.
Can be divided into two kinds of hard sealing structure and soft sealing structures according to the traditional mining electromagnetic priority valve of seal form.Traditional hydraulic bracket control system mining electromagnetic priority valves of hard sealed type that use more, but hard sealed type electromagnetic pilot valve actuating length is little, yet the environment under the coal mine is abominable, emulsified liquid can not effectively be filtered, so cause the frequent blockage phenomenon of sealing place of hard sealed type electromagnetic pilot valve, and the sealing surface difficulty of processing of hard sealing is large, is unfavorable for the use on a large scale under the coal mine.And the mining electromagnetic priority valve of soft sealing type, although actuating length is large, the runner bore is little and adopt the spool catch bar structure of eccentric, causes the sealing surface unbalance stress, serious wear.
Summary of the invention
The objective of the invention is for the technological deficiency that exists in the prior art, and provide a kind of actuating length large and can effectively avoid the electromagnetic priority valve of sealing surface wear.
For realizing that the technological scheme that purpose of the present invention adopts is:
A kind of electromagnetic priority valve comprises valve body and spool, and described spool comprises the middle core body that is formed with shoulder hole and is provided with liquid entering hole, the outlet of control liquid and liquid return hole;
Be successively set on vertically the resetting-mechanism in the core body shoulder hole;
Can be arranged on slidingly back and forth in the core body and with the rear shutoff that resetting-mechanism is in transmission connection, be formed with the feed liquor runner between described rear shutoff and shoulder hole;
Be positioned in the valve core case of the vertical end of shoulder hole, described valve core case center is formed with spool bore vertically, be formed with the first flow that is communicated with spool bore and the outlet of control liquid on the described valve core case, be provided with the valve core rod that can slide before and after axially along spool bore in described spool bore, described valve core rod length is greater than being formed with the perforation runner between the thickness of valve core case and described valve core rod and spool bore;
Front shutoff, it comprises the ring body that is fixedly installed on valve core case the place ahead and can be arranged on slidingly back and forth the interior front plug of described ring body, be formed with second between described ring body and front plug and connect runner, be provided with the second runner that is communicated with refluxing opening and the second perforation runner on the described ring body;
And the catch bar that can promote described front shutoff;
Wherein, on the opposing side of described front plug and rear shutoff and valve core case, be formed with respectively surface seal structure.
Wherein said first flow comprises along it and radially is arranged on described valve core case and a plurality of control delivery channels of being communicated with described perforation runner and be formed on the spool groove that the valve core case periphery flows each control output to be communicated with.Described the second runner is similar to the design of first flow.
Described surface seal structure comprises and is respectively formed at the ring groove on front plug or the rear shutoff end face and is filled in sealing material in the described ring groove.
Described sealing material is polyoxymethylene or polyether-ether-ketone.
Center, described valve core case rear and front end is formed with respectively boss, and described boss edge is corresponding with sealing material.
Be formed with accordingly respectively several longitudinal sections that extend vertically on the cylinder of described valve core rod and front plug and connect runner or the second perforation runner to form accordingly with valve seat or ring body respectively.
Be respectively arranged with a plurality of grooves that extend vertically on the internal face of described spool bore and ring body and connect runner or the second perforation runner to form accordingly with valve core rod or front plug respectively.
Described front shutoff front portion is fixedly installed dividing plate, and described catch bar passes described dividing plate and holds mutually with swivel nut, and described swivel nut can be arranged on slidingly back and forth the shoulder hole front end of core body and can be in transmission connection with electromagnet.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adopts the sealing configuration of soft sealing type, be to place the spool push rod in original runner in the center portion of valve core case, owing in original runner, placing the spool push rod, the sectional area of runner is the difference of the diameter of the diameter of runner and spool push rod, therefore in the constant situation of the sectional area of original runner, the diameter of runner and the diameter dimension of spool push rod can be increased, this structure can reduce the difficulty of processing of spool integral body.And owing to having adopted spool push rod placed in the middle, so that each part stress is more even, the soft seal wearing and tearing reduce, thereby reduce fabricating cost and later maintenance cost.
Description of drawings
Figure 1 shows that electromagnetic priority valve structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Electromagnetic priority valve of the present invention comprises valve body and spool, described valve body is cylindric, can matchingly spool be held wherein and draws each liquid road, and described electromagnetic priority valve is two-position three-way valve, cooperation and the prior art of its valve body design and valve body and spool are similar, no longer launch to describe at this.It is pointed out that in the following description, be take near the action input end as before, the electromagnetic priority valve reset terminal carries out exemplary illustrated after being, the definition of front and back just is convenient to describe and is not construed as limiting.
As shown in Figure 1, in the middle of comprising, spool of the present invention is formed with the core body 1 of shoulder hole, be successively set on vertically the resetting-mechanism in the core body shoulder hole, rear shutoff 2, valve core case 3, front shutoff, dividing plate 5 and catch bar 6 and swivel nut 7, wherein said resetting-mechanism and rear shutoff 2 are arranged on the smaller diameter end of shoulder hole, described resetting-mechanism comprises the positioning block 8 that is fixedly connected on described core body shoulder hole rear portion and arranges vertically and the rear portion is limited in the Returnning spring 9 that positioning block 8 Inner Front Ends and rear shutoff 2 hold, described rear shutoff 2 can be arranged on slidingly back and forth between the shoulder hole smaller diameter end of core body 1 inner and its periphery and core body shoulder hole internal face and be provided with the feed liquor runner, be formed with the liquid entering hole 11 that connects the core body wall and be communicated with the maintenance of feed liquor runner on the core body at described rear shutoff rear portion, specifically, described rear shutoff 2 is column, on the cylinder periphery of described rear shutoff 2, axially cut one or a few blocks along it, form the feed liquor runner with regard to shutoff after destroying with the seal of shoulder hole like this, certainly also can adopt the form realization feed liquor runner design in shoulder hole corresponding part machined grooves.
Described valve core case 3 be positioned in shoulder hole vertical end face side and and the internal face of shoulder hole between be provided with sealing mechanism, as between shoulder hole end face and the valve core case ear end face outside, seal ring etc. being set.Described valve core case center is formed with spool bore vertically, in described spool bore, be provided with the valve core rod 31 that can slide along the axial front and back of spool bore, described valve core rod length is a bit larger tham the thickness of valve core case 3, be that described valve core rod always has an end will expose outside the spool bore, exposed length is looked different model and difference, general 0.2-0.3mm.Be provided with between described valve core rod 31 and spool bore and connect runner 32, radially be provided with the control delivery channel 33 that is communicated with described perforation runner and be formed on the spool groove 34 that the valve core case periphery flows each control output to be communicated with along it at described valve core case, be formed with control liquid outlet 12 at described core body accordingly with described spool groove 34.The setting of described perforation runner 32 is close with arranging of feed liquor runner, namely is formed with several longitudinal sections that extend vertically on the cylinder of described valve core rod and connects runner to form with valve seat.Perhaps be provided with on the internal face of described spool bore a plurality of grooves that extend vertically with and valve core rod between form and connect runner.
Adopt valve core rod middle structure can correspondingly increase the diameter of valve core rod, can increase the sectional area that connects runner when guaranteeing valve core rod intensity, and the design of large-diameter valve core bar can also reduce difficulty of processing.
Described front shutoff comprise be fixedly installed on valve core case the place ahead and and core body between be provided with the ring body 41 of seal ring and can be arranged on slidingly back and forth front plug 42 in the described ring body 41, be formed with the liquid return hole 13 that connects the core body wall at described core body and ring body 41 corresponding parts, simultaneously, be formed with second between described ring body 41 and front plug and connect runner, the setting of described the second perforation runner is close with arranging of feed liquor runner, no longer launches to describe at this.Simultaneously, be provided with return flow line radially and be arranged on groove on ring body ring week at described ring body, and be formed with refluxing opening 13 at core body accordingly, this part and said structure are similar, no longer describe at this.
The place ahead of shutoff and be formed with the catch bar through hole in the center before described dividing plate 5 is fixedly installed in the shoulder hole, described catch bar through hole is in order to allow catch bar 6 to pass to promote front plug action, simultaneously between described catch bar through hole and catch bar, also be provided with sealing configuration, as be arranged on the seal ring of catch bar through hole one end.
Described catch bar 6 front ends and swivel nut 7 hold, described swivel nut 7 is arranged on the shoulder hole front end of core body 1 and can be subjected to solenoid actuated mobile backward, further, be provided with damping mechanism in the described swivel nut 7, it comprises the retainer 71 that is fixedly connected with swivel nut 7, be arranged on vertically the retainer rear and be provided with the movable jacking block 73 of damping spring 72 between the two, described catch bar holds mutually with motion bar.Namely can eject backward and promote according to this front plug and valve core rod and rear shutoff by drive activity jacking block by retainer, simultaneously when electromagnet does not move output, the Returnning spring of described resetting-mechanism can force rear shutoff, valve core rod, front plug and catch bar to move forward, and is with at last movable snail sleeve 7 to reset.
For realize the action of two-position three-way valve according to above-mentioned action, between described front plug and rear shutoff and valve core case, be formed with respectively surface seal structure, specifically, described surface seal structure comprises that being respectively formed at front plug and rear shutoff and valve core case is formed with ring groove on the opposite, in described ring groove, be filled with sealing material 4, described sealing material is filled and led up described ring groove or is protruded a little, and described sealing material is polyoxymethylene or polyether-ether-ketone.Adopt the sealing material setting of annular, can effectively guarantee the sealing of spool bore and front plug or rear shutoff, adopt sealing material not being set with the valve core rod contacting point simultaneously and directly firmly contact, improved the accuracy of control, response can consist of destruction to sealing material soon and not, effectively guarantees long its working life.
As preferred version, center, described valve core case rear and front end is formed with respectively boss, the periphery of described boss is corresponding with sealing material, the face sealing effect that can further improve valve core case and front plug and rear shutoff that cooperates of described boss and sealing material.
When electromagnet moves, valve core rod backs down rear shutoff and front plug and valve core case maintenance sealing, liquid entering hole is communicated with the outlet of control liquid like this, can realize control, when electromagnet stops action, at the action of reset spring lower valve core bar front plug is backed down then shutoff and valve core case maintenance sealing, control like this liquid outlet and be communicated with liquid return hole, realize back liquid.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. an electromagnetic priority valve comprises valve body and spool, it is characterized in that, described spool comprises the middle core body (1) that is formed with shoulder hole and is provided with liquid entering hole, the outlet of control liquid and liquid return hole;
Be successively set on vertically the resetting-mechanism in the core body shoulder hole;
Can be arranged on slidingly back and forth in the core body (1) and with the rear shutoff (2) that resetting-mechanism is in transmission connection, be formed with the feed liquor runner between described rear shutoff (2) and shoulder hole;
Be positioned in the valve core case (3) of the vertical end of shoulder hole, described valve core case (3) center is formed with spool bore vertically, be formed with the first flow that is communicated with spool bore and the outlet of control liquid on the described valve core case, be provided with the valve core rod (31) that can slide before and after axially along spool bore in described spool bore, described valve core rod length connects runner (32) greater than being formed with between the thickness of valve core case (3) and described valve core rod and spool bore;
Front shutoff, it comprises the ring body (41) that is fixedly installed on valve core case the place ahead and can be arranged on slidingly back and forth the interior front plug (42) of described ring body (41), be formed with second between described ring body (41) and front plug and connect runner, be provided with the second runner that is communicated with refluxing opening and the second perforation runner on the described ring body;
And the catch bar that can promote described front shutoff;
Wherein, on the opposing side of described front plug and rear shutoff and valve core case, be formed with respectively surface seal structure.
2. electromagnetic priority valve as claimed in claim 1 is characterized in that, described surface seal structure comprises and is respectively formed at the ring groove on front plug or the rear shutoff end face and is filled in sealing material in the described ring groove.
3. electromagnetic priority valve as claimed in claim 2 is characterized in that, described sealing material is polyoxymethylene or polyether-ether-ketone.
4. electromagnetic priority valve as claimed in claim 3 is characterized in that, center, described valve core case rear and front end is formed with respectively boss, and described boss edge is corresponding with sealing material.
5. electromagnetic priority valve as claimed in claim 1 is characterized in that, is formed with accordingly respectively several longitudinal sections that extend vertically on the cylinder of described valve core rod and front plug and connects runner or the second perforation runner to form accordingly with valve seat or ring body respectively.
6. electromagnetic priority valve as claimed in claim 1 is characterized in that, is respectively arranged with a plurality of grooves that extend vertically on the internal face of described spool bore and ring body and connects runner or the second perforation runner to form accordingly with valve core rod or front plug respectively.
7. electromagnetic priority valve as claimed in claim 1, it is characterized in that, described front shutoff front portion is fixedly installed dividing plate (5), described catch bar (6) passes described dividing plate and holds mutually with swivel nut, and described swivel nut can be arranged on slidingly back and forth the shoulder hole front end of core body and can be in transmission connection with electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310267661.6A CN103307310B (en) | 2013-06-27 | 2013-06-27 | The electromagnetic priority valve of mine hydraulic bracket electrohydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310267661.6A CN103307310B (en) | 2013-06-27 | 2013-06-27 | The electromagnetic priority valve of mine hydraulic bracket electrohydraulic control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103307310A true CN103307310A (en) | 2013-09-18 |
| CN103307310B CN103307310B (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310267661.6A Active CN103307310B (en) | 2013-06-27 | 2013-06-27 | The electromagnetic priority valve of mine hydraulic bracket electrohydraulic control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN103307310B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895185A (en) * | 2018-08-01 | 2018-11-27 | 佛山信卓派思机械科技有限公司 | A kind of anti-slip control valve |
| WO2022199252A1 (en) * | 2021-03-23 | 2022-09-29 | 浙江盾安人工环境股份有限公司 | Electromagnetic valve and electromagnetic valve assembly |
Citations (7)
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|---|---|---|---|---|
| JP2002081557A (en) * | 2000-09-07 | 2002-03-22 | Advance Denki Kogyo Kk | Mixing ratio control valve structure |
| CN2584977Y (en) * | 2002-11-08 | 2003-11-05 | 徐连奎 | Automatic air control switching valve |
| WO2009010077A1 (en) * | 2007-07-14 | 2009-01-22 | Festo Ag & Co. Kg | Valve for redundancy applications |
| CN202203204U (en) * | 2011-08-26 | 2012-04-25 | 宁波长壁流体动力科技有限公司 | Electromagnetic pilot valve |
| CN202541518U (en) * | 2012-04-26 | 2012-11-21 | 青岛四方车辆研究所有限公司 | Forced release valve of urban rail vehicle parking brake control unit |
| CN202756740U (en) * | 2012-07-20 | 2013-02-27 | 鞍山电磁阀有限责任公司 | Two-position three-way direct-acting solenoid valve |
| CN203335509U (en) * | 2013-06-27 | 2013-12-11 | 天津华宁电子有限公司 | Electromagnetic pilot operated valve |
-
2013
- 2013-06-27 CN CN201310267661.6A patent/CN103307310B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081557A (en) * | 2000-09-07 | 2002-03-22 | Advance Denki Kogyo Kk | Mixing ratio control valve structure |
| CN2584977Y (en) * | 2002-11-08 | 2003-11-05 | 徐连奎 | Automatic air control switching valve |
| WO2009010077A1 (en) * | 2007-07-14 | 2009-01-22 | Festo Ag & Co. Kg | Valve for redundancy applications |
| CN202203204U (en) * | 2011-08-26 | 2012-04-25 | 宁波长壁流体动力科技有限公司 | Electromagnetic pilot valve |
| CN202541518U (en) * | 2012-04-26 | 2012-11-21 | 青岛四方车辆研究所有限公司 | Forced release valve of urban rail vehicle parking brake control unit |
| CN202756740U (en) * | 2012-07-20 | 2013-02-27 | 鞍山电磁阀有限责任公司 | Two-position three-way direct-acting solenoid valve |
| CN203335509U (en) * | 2013-06-27 | 2013-12-11 | 天津华宁电子有限公司 | Electromagnetic pilot operated valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895185A (en) * | 2018-08-01 | 2018-11-27 | 佛山信卓派思机械科技有限公司 | A kind of anti-slip control valve |
| CN108895185B (en) * | 2018-08-01 | 2019-11-19 | 玉环华洲机械股份有限公司 | A kind of anti-slip control valve |
| WO2022199252A1 (en) * | 2021-03-23 | 2022-09-29 | 浙江盾安人工环境股份有限公司 | Electromagnetic valve and electromagnetic valve assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103307310B (en) | 2015-12-09 |
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Free format text: FORMER OWNER: TIANJIN HUANING ELECTRIC HYDRAULIC CONTROL TECHNOLOGY CO., LTD. Effective date: 20150729 |
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Effective date of registration: 20150729 Address after: 300385 No. 9, eight West Road, Airport Economic Development Zone, Xiqing District, Tianjin Applicant after: Tianjin Huaning Electronics Co., Ltd. Address before: 300385 No. 9, eight West Road, Airport Economic Development Zone, Xiqing District, Tianjin Applicant before: Tianjin Huaning Electronics Co., Ltd. Applicant before: Tianjin Huaning Electrohydraulic Control Technology Co., Ltd. |
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Address after: 8 No. 300385 Tianjin Saida century Xiqing economic and Technological Development Zone Avenue Patentee after: Tianjin Huaning Electronics Co., Ltd. Address before: 300385 No. 9, eight West Road, Airport Economic Development Zone, Xiqing District, Tianjin Patentee before: Tianjin Huaning Electronics Co., Ltd. |
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| CP02 | Change in the address of a patent holder |