CN204921519U - Hydraulic system and explosion -proof magenetic exchange valve - Google Patents
Hydraulic system and explosion -proof magenetic exchange valve Download PDFInfo
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- CN204921519U CN204921519U CN201520671898.5U CN201520671898U CN204921519U CN 204921519 U CN204921519 U CN 204921519U CN 201520671898 U CN201520671898 U CN 201520671898U CN 204921519 U CN204921519 U CN 204921519U
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Abstract
The utility model discloses a hydraulic system and explosion -proof magenetic exchange valve, explosion -proof magenetic exchange valve include the valve body, set up in the inside case of valve body and be used for control the case is relative valve body motion and set up in the coil of valve body one end, still include with the cable joint and the cable of winding connection, cable joint and the cable is sealed by sealing filler. Since the winding connection of cable joint and cable and the motion of control case, coil circular telegram back, and the surface of cable joint and cable can produce the sources of lighting such as spark or electric arc, the utility model discloses because sealing filler can set up with cable joint and cable direct contact and seal in its surface, thus the cavity among the relative prior art, bulky range reduces, and the sealing filler of use not only can prevent cable joint and cable surface and the contact of external dangerous air, but also can reduce explosion -proof magenetic exchange valve's volume.
Description
Technical field
The utility model relates to industrial vehicle hydraulic system explosion-proof technology field, more particularly, relates to a kind of hydraulic system and anti-explosion is electromagnetic selector valve.
Background technique
In automotive field, hydraulic system is as the extensive use in industrial vehicle such as fluid-link steering, hydraudynamic drive, and selector valve is control unit important in hydraulic system, and along with the raising of automaticity, solenoid directional control valve replaces hand-operated direction valve to be widely used in hydraulic system.Airtight chamber is had in solenoid directional control valve, have through hole at diverse location, each hole connects different oil pipes, is piston in the middle of chamber, two sides is two blocks of electromagnet, which side the magnet coil energising valve body in which face will attracted to, and open or close different oil drainage holes, and oil inlet hole often opened by the movement of control valve body, hydraulic oil will enter different oil exit pipes, then promoted the piston of oil cylinder by the pressure of oil, piston drives piston rod again, piston rod driving mechanical device.Current switching like this by controlling electromagnet just controls the lifting of mechanical motion along with automaticity.Common solenoid directional control valve is when its work, because cable joining and the naked leakage of cable directly contact with air outside, after powered up, cable and cable joining easily produce spark, electric arc, if become ignition source at deathtrap (containing the fire good such as explosive gas, dust) spark, electric arc etc., as easy as rolling off a logly blast, therefore common solenoid directional control valve can not use in deathtrap.
At present, conventional anti-explosion is electromagnetic selector valve, elastic cable paper and cable joining are included in cavity by the cavity utilizing volume larger, and because cavity volume is comparatively large, the chamber wall of cavity uses thicker material, prevents spark from contacting with extraneous explosive gas.
In sum, reducing the problem of solenoid directional control valve volume while how effectively solving solenoid directional control valve flame-proof explosion-proof, is current those skilled in the art's urgent problem.
Model utility content
For solving the problems of the technologies described above, the utility model provides a kind of anti-explosion is electromagnetic selector valve, can not only effective flame-proof explosion-proof, can also reduce volume simultaneously.
For achieving the above object, the utility model provides following technological scheme:
A kind of anti-explosion is electromagnetic selector valve, comprise valve body, be arranged at the spool of described valve inner and for controlling the relatively described valve body of described spool and being arranged at the coil of described valve body one end, also comprise the cable joining and cable that are connected with described coil, described cable joining and described cable are sealed by stuffing box packing.
Preferably, in above-mentioned anti-explosion is electromagnetic selector valve, also comprise and be arranged at the insulation crust of described valve body near one end of described coil and the end cap of described insulation crust.
Preferably, in above-mentioned anti-explosion is electromagnetic selector valve, the surface of contact of described insulation crust and described valve body is provided with the first seal ring.
Preferably, in above-mentioned anti-explosion is electromagnetic selector valve, the joint of described insulation crust and described end cap is provided with the second seal ring.
Preferably, in above-mentioned anti-explosion is electromagnetic selector valve, the surface of contact of described spool and described end cap is provided with the 3rd seal ring.
Preferably, in above-mentioned anti-explosion is electromagnetic selector valve, described stuffing box packing is epoxy resin.
The utility model additionally provides a kind of hydraulic system, comprises the anti-explosion is electromagnetic selector valve described in above-mentioned any one.
As can be seen from technique scheme, a kind of anti-explosion is electromagnetic selector valve provided by the utility model, comprise valve body, be arranged at the spool of described valve inner and for controlling the relatively described valve body of described spool and being arranged at the coil of described valve body one end, also comprise the cable joining and cable that are connected with described coil, described cable joining and described cable are sealed by stuffing box packing.Because cable joining and cable are connected with the coil of control valve core movement, after coil electricity, the surface of cable joining and cable can produce the ignition source such as spark or electric arc, in order to prevent the cable joining be energized from directly contacting with extraneous hazardous gas with cable in prior art, need larger space and the thicker cavity sealing cable junctions of thickness and cable, but, the utility model is arranged at its surface seals because stuffing box packing directly can contact with cable joining and cable, therefore the cavity in hinge structure, volume significantly reduces, the stuffing box packing used can not only prevent cable joining from contacting with extraneous fatal atmosphere with cable surface, but also the volume of anti-explosion is electromagnetic selector valve can be reduced.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
A kind of anti-explosion is electromagnetic selector valve schematic diagram that Fig. 1 provides for the utility model embodiment.
In accompanying drawing, mark is as follows:
1. valve body 2. spool 3. first seal ring 4. loop A 5. coil B6. insulation crust 7. the 3rd seal ring 8. end cap 9. second seal ring 10. stuffing box packing 11. cable joining 12. cable
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of anti-explosion is electromagnetic selector valve schematic diagram that Fig. 1 provides for the utility model embodiment.
In a kind of embodiment, a kind of anti-explosion is electromagnetic selector valve is provided, comprise valve body 1, be arranged at the spool 2 of described valve body 1 inside and move and the coil being arranged at described valve body 1 one end for controlling the relatively described valve body 1 of described spool 2, also comprise the cable joining 11 and cable 12 that are connected with described coil, described cable joining 11 and described cable 12 are sealed by stuffing box packing.
Concrete, the anti-explosion is electromagnetic selector valve that the present embodiment provides, be control spool 2 by coil to move switching oil circuit, include the valve body 1 offering multiple undercut groove, undercut groove is communicated with oil circuit, and coil control spool 2 moves and switches different oil circuits.After being energized with cable 12 and cable joining 11 connecting coil, generation current, cable 12 and cable joining 11 surface is caused to produce spark, the ignition sources such as electric arc, flame proof technology is utilized to carry out in prior art explosion-proof, flame proof is a kind of type of explosion proof construc tion utilized the source that may set off an explosion and explosion environment isolation, allow to light internal gas, but can blast be born, and outside can not be passed to light, ignite, but, flame proof mode needs enough flame proof spaces and enough thick explosion-proof chamber wall, allow the internal gas lighted just can not pass to outside and light ignition.And the present embodiment cable joining of utilizing stuffing box packing to be namely connected with coil wire outlet and cable place carry out encapsulation, inside spark is sealed, and can not light internal explosion gas.Packing seal is a kind of gland seal, and its pressured lid produces impacting force, thus compresses filler, forces filler to compress on the sealing surface, produces the radial force of sealing effect, thus seal.Simply, it is convenient, with low cost, applied widely to change for the cable joining sealed by stuffing box packing and the construction of cable.
It should be noted that, when utilizing stuffing box packing 10 to seal, can seal according to the shape of cable joining 11 and cable 12, also can first in cable joining 11 and a cable 12 outer increase cavity body, stuffing box packing 10 is injected in cavity body, no matter use which kind of mode to seal, can both significantly reduce its volume, and can also well isolate with extraneous hazardous gas.
It should be noted that the anti-explosion is electromagnetic selector valve that the utility model provides includes but not limited to three-position five-way solenoid directional control valve, different types of solenoid directional control valve is all within protection domain.
Further, described stuffing box packing 10 is preferably epoxy resin, also can for other can be similar to the sealing effect of epoxy resin material, all within protection domain, the sealing effect of stuffing box packing 10 is better, and volume is corresponding less.
Further, the anti-explosion is electromagnetic selector valve provided also comprises and is arranged at the insulation crust 6 of described valve body near one end of described coil and the end cap 8 of described insulation crust 6.Described insulation crust 6 is provided with the first seal ring 3 with the surface of contact of described valve body 1.Described insulation crust 6 is provided with the second seal ring 9 with the joint of described end cap 8.Described spool 2 is provided with the 3rd seal ring 7 with the surface of contact of described end cap 8.Because the position of the first seal ring, the second seal ring and the 3rd seal ring is explosive point, therefore three seal rings are provided with, object is placed on by valve body 1 in an airtight environment, isolates, prevent hazardous gas from entering whole valve body and cause blasting with extraneous hazardous environment.
Specific works process is as follows: anti-explosion is electromagnetic selector valve has three, left, center, right gear function, when loop A 4 and coil B5 all no electric circuit time, electromagnetic valve core is in meta under the equilibrant effect of internal resilience; When loop A 4 is energized, loop A 4 produces magnetic field, and spool 2 overcomes inner elastic force under the action of a magnetic force and is moved to the left, and make spool 2 be in left position, solenoid valve realizes left position function; When coil B5 is energized, coil B5 produces magnetic field, and spool 2 overcomes inner elastic force under the action of a magnetic force and moves right, and make spool 2 be in right position, solenoid valve realizes right position function.The utility model directly can contact with cable joining 11 and cable 12 due to stuffing box packing 10, and be arranged at its surface and seal, therefore the flame proof cavity in hinge structure, volume significantly reduces, the stuffing box packing used can not only prevent cable joining 11 from contacting with extraneous fatal atmosphere with cable 12 surface, but also can reduce the volume of anti-explosion is electromagnetic selector valve.
The utility model additionally provides a kind of hydraulic system, comprises the anti-explosion is electromagnetic selector valve described in above-mentioned any one.Due to the part that explosion-proof solenoid valve is hydraulic system, can be explosion-proof while the volume reduction of explosion-proof solenoid valve, therefore, the volume of hydraulic system also obviously reduces, and improves explosion-proof capabilities.Such as, the anti-explosion is electromagnetic selector valve that the utility model provides is applied in the vehicle or automation equipment with hydraulic system, improves the safety coefficient of engineer operation.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or control panel, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. an anti-explosion is electromagnetic selector valve, comprise valve body, be arranged at the spool of described valve inner and for controlling the relatively described valve body of described spool and being arranged at the coil of described valve body one end, it is characterized in that, also comprise the cable joining and cable that are connected with described coil, described cable joining and described cable are sealed by stuffing box packing.
2. anti-explosion is electromagnetic selector valve as claimed in claim 1, is characterized in that, also comprise and be arranged at the insulation crust of described valve body near one end of described coil and the end cap of described insulation crust.
3. anti-explosion is electromagnetic selector valve as claimed in claim 2, it is characterized in that, the surface of contact of described insulation crust and described valve body is provided with the first seal ring.
4. anti-explosion is electromagnetic selector valve as claimed in claim 3, it is characterized in that, the joint of described insulation crust and described end cap is provided with the second seal ring.
5. anti-explosion is electromagnetic selector valve as claimed in claim 4, it is characterized in that, the surface of contact of described spool and described end cap is provided with the 3rd seal ring.
6. the anti-explosion is electromagnetic selector valve as described in any one of claim 1 to 5, is characterized in that, described stuffing box packing is epoxy resin.
7. a hydraulic system, is characterized in that, comprises the anti-explosion is electromagnetic selector valve described in any one of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520671898.5U CN204921519U (en) | 2015-08-31 | 2015-08-31 | Hydraulic system and explosion -proof magenetic exchange valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520671898.5U CN204921519U (en) | 2015-08-31 | 2015-08-31 | Hydraulic system and explosion -proof magenetic exchange valve |
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| CN204921519U true CN204921519U (en) | 2015-12-30 |
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| CN201520671898.5U Active CN204921519U (en) | 2015-08-31 | 2015-08-31 | Hydraulic system and explosion -proof magenetic exchange valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041755A (en) * | 2015-08-31 | 2015-11-11 | 衡阳合力工业车辆有限公司 | Hydraulic system and anti-explosion electromagnetic reversing valve |
| CN106246987A (en) * | 2016-08-16 | 2016-12-21 | 张小高 | A kind of new type explosion proof electromagnetic valve |
| CN108662151A (en) * | 2017-03-28 | 2018-10-16 | 浙江三花智能控制股份有限公司 | Electric expansion valve and refrigeration system with it |
-
2015
- 2015-08-31 CN CN201520671898.5U patent/CN204921519U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041755A (en) * | 2015-08-31 | 2015-11-11 | 衡阳合力工业车辆有限公司 | Hydraulic system and anti-explosion electromagnetic reversing valve |
| CN106246987A (en) * | 2016-08-16 | 2016-12-21 | 张小高 | A kind of new type explosion proof electromagnetic valve |
| CN108662151A (en) * | 2017-03-28 | 2018-10-16 | 浙江三花智能控制股份有限公司 | Electric expansion valve and refrigeration system with it |
| CN108662151B (en) * | 2017-03-28 | 2022-05-17 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigeration system with same |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Yucheng Inventor after: Wang Liang Inventor after: Wang Xubing Inventor after: Yao Wu Inventor after: Liu Zhong Inventor after: Liao Ting Inventor after: Zou Liye Inventor before: Huang Yucheng Inventor before: Wang Liang Inventor before: Wang Xubing Inventor before: Yao Wu Inventor before: Liu Zhong Inventor before: Liao Ting Inventor before: Zou Liye |
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| COR | Change of bibliographic data |