阅读说明：本技术 一种能够提高控制精度的电磁阀 (Electromagnetic valve capable of improving control precision ) 是由 刁小飞 赵东旭 王晓成 于 2019-09-03 设计创作，主要内容包括：本发明公开了一种能够提高控制精度的电磁阀,其涉及电磁阀领域,旨在解决现有电磁阀在衔铁与磁极之间增加隔磁垫片来控制行程会影响电磁阀控制精度的问题。其技术方案要点包括导磁套,所述导磁套内滑动设置有衔铁,且其端部设置有磁极,所述磁极包括闭合部和插接部,所述闭合部与所述导磁套端部接触,所述插接部嵌于所述导磁套内,所述插接部与衔铁之间设置有呈压缩状态的大弹簧,且所述插接部和衔铁上分别开设有与所述大弹簧配合的让位槽；所述插接部与所述衔铁相对的端面设置有若干能够与所述衔铁端面接触的凸点。本发明能够减少零件数量,降低了装配成本、装配误差以及加工难度,从而能够提高电磁阀控制精度。(The invention discloses an electromagnetic valve capable of improving control precision, relates to the field of electromagnetic valves, and aims to solve the problem that the control precision of the electromagnetic valve is influenced by adding a magnetic isolation gasket between an armature and a magnetic pole to control a stroke of the conventional electromagnetic valve. The technical scheme includes that the magnetic flux sleeve is characterized by comprising an armature, a magnetic pole is arranged at the end of the armature and is slidably arranged in the magnetic flux sleeve, the magnetic pole comprises a closing part and an inserting part, the closing part is in contact with the end of the magnetic flux sleeve, the inserting part is embedded in the magnetic flux sleeve, a large spring in a compressed state is arranged between the inserting part and the armature, and the inserting part and the armature are respectively provided with a abdicating groove matched with the large spring; the end face of the insertion part opposite to the armature is provided with a plurality of salient points which can be in contact with the end face of the armature. The invention can reduce the number of parts, and reduce the assembly cost, the assembly error and the processing difficulty, thereby improving the control precision of the electromagnetic valve.)

1. The utility model provides a can improve control accuracy's solenoid valve, includes flux sleeve (3), it is provided with armature (2) to slide in flux sleeve (3), and its tip is provided with magnetic pole (1), magnetic pole (1) are including closed portion and grafting portion, closed portion with flux sleeve (3) end contact, grafting portion inlay in flux sleeve (3), its characterized in that: a large spring (12) in a compressed state is arranged between the insertion part and the armature (2), and the insertion part and the armature (2) are respectively provided with a abdicating groove matched with the large spring (12); the end face of the insertion part opposite to the armature (2) is provided with a plurality of salient points (11) which can be in contact with the end face of the armature (2).

2. The electromagnetic valve capable of improving control accuracy according to claim 1, characterized in that: the salient points (11) are hemispherical.

3. The electromagnetic valve capable of improving control accuracy according to claim 1, characterized in that: a valve body (6) is arranged at one end of the magnetic conductive sleeve (3) far away from the magnetic pole (1), a magnetic conductive gasket (61) sleeved on the magnetic conductive sleeve (3) is arranged at one end of the valve body (6), a filter screen (65) is embedded at the other end of the valve body, and a lining (7) is embedded in the filter screen; filter screen (65) include filter screen support (651) and filter screen (652), wherein valve body (6) and filter screen support (651) are the working of plastics, bush (7), magnetic conduction gasket (61) and filter screen (652) are the metalwork, just valve body (6), bush (7), magnetic conduction gasket (61) and filter screen (65) are integrated into one piece.

4. The electromagnetic valve capable of improving control accuracy according to claim 3, characterized in that: an axial limiting structure is arranged between the valve body (6) and the bushing (7).

5. The electromagnetic valve capable of improving control accuracy according to claim 4, characterized in that: the axial limiting structure comprises a limiting ring groove (72) formed in the outer side wall of the bushing (7), and a limiting ring (62) arranged on the inner side wall of the valve body (6) and matched with the limiting ring groove (72).

6. The electromagnetic valve capable of improving control accuracy according to claim 5, characterized in that: the end part of the valve body (6) is provided with a plurality of stepped limiting columns (612), and limiting holes (611) matched with the limiting columns (612) are arranged in the magnetic conductive gasket (61).

7. The electromagnetic valve capable of improving control accuracy according to claim 3, characterized in that: an oil guide groove (63) is formed in the inner side wall of the valve body (6), one end of the oil guide groove (63) is arranged in a closed mode, the other end of the oil guide groove (63) extends to the end portion of the valve body (6) and is arranged in an open mode and opposite to the filter screen (65); and a feedback hole (71) communicated with the oil guide groove (63) is formed in the inner side wall of the bushing (7).

8. The electromagnetic valve capable of improving control accuracy according to claim 7, characterized in that: and a thin-wall sleeve (21) is arranged between the outer side wall of the armature (2) and the inner side wall of the magnetic sleeve (3).

9. The electromagnetic valve capable of improving control accuracy according to claim 8, characterized in that: the thin-wall sleeve (21) is made of Teflon fiber cloth.

10. The electromagnetic valve capable of improving control accuracy according to claim 8, characterized in that: the outer side wall of the magnetic conductive sleeve (3) is provided with an electromagnetic coil (4), the electromagnetic coil (4) is sleeved with an electromagnetic valve shell (5), and the outer side wall of the electromagnetic valve shell (5) is convexly provided with a positioning rib (51).

Technical Field

The present invention relates to the field of solenoid valves, and more particularly, to a solenoid valve capable of improving control accuracy.

Background

The stroke of the existing electromagnetic valve is controlled by adding a magnetic isolation gasket between an armature and a magnetic pole, but the stroke error is introduced to a certain extent due to the increase of the number of parts and assembly errors, and the control precision is reduced.

Disclosure of Invention

In view of the defects in the prior art, the present invention aims to provide a solenoid valve capable of improving control accuracy, which has the advantage of improving control accuracy.

In order to achieve the purpose, the invention provides the following technical scheme:

an electromagnetic valve capable of improving control precision comprises a magnetic conductive sleeve, wherein an armature is arranged in the magnetic conductive sleeve in a sliding mode, a magnetic pole is arranged at the end portion of the magnetic conductive sleeve, the magnetic pole comprises a closing portion and an inserting portion, the closing portion is in contact with the end portion of the magnetic conductive sleeve, the inserting portion is embedded in the magnetic conductive sleeve, a large spring in a compression state is arranged between the inserting portion and the armature, and abdicating grooves matched with the large spring are formed in the inserting portion and the armature respectively; the end face of the insertion part opposite to the armature is provided with a plurality of salient points which can be in contact with the end face of the armature.

Furthermore, the salient points are hemispherical.

Furthermore, a valve body is arranged at one end of the magnetic conductive sleeve, which is far away from the magnetic pole, a magnetic conductive gasket sleeved on the magnetic conductive sleeve is arranged at one end of the valve body, a filter screen is embedded at the other end of the valve body, and a lining is embedded in the filter screen; the filter screen includes filter screen support and filter screen, wherein valve body and filter screen support are the working of plastics, bush, magnetic conduction gasket and filter screen are the metalwork, just valve body, bush, magnetic conduction gasket and filter screen are integrated into one piece.

Further, an axial limiting structure is arranged between the valve body and the bushing.

Further, axial limit structure is including seting up in the spacing annular of bush lateral wall, and set up in the valve body inside wall, with spacing annular complex spacing ring.

Furthermore, the end part of the valve body is provided with a plurality of stepped limiting columns, and the magnetic conductive gasket is internally provided with limiting holes matched with the limiting columns.

Furthermore, an oil guide groove is arranged on the inner side wall of the valve body, one end of the oil guide groove is arranged in a closed mode, the other end of the oil guide groove extends to the end portion of the valve body, is arranged in an open mode and is opposite to the filter screen; and a feedback hole communicated with the oil guide groove is formed in the inner side wall of the bushing.

Further, a thin-wall sleeve is arranged between the outer side wall of the armature and the inner side wall of the magnetic sleeve.

Further, the thin-wall sleeve is made of Teflon fiber cloth.

Further, the outer side wall of the magnetic conductive sleeve is provided with an electromagnetic coil, an electromagnetic valve shell is sleeved on the electromagnetic coil, and a positioning rib is arranged on the outer side wall of the electromagnetic valve shell in a protruding mode.

In conclusion, the invention has the following beneficial effects:

1. the salient points are adopted, so that the number of parts can be reduced, the cost is reduced, and the assembly and accumulated errors can be reduced, so that the control precision is improved;

2. the valve body, the bushing, the filter screen bracket and the magnetic conductive gasket are integrally molded by injection, so that the assembly process of a plurality of parts of a hydraulic part is omitted, the assembly cost, the assembly error and the processing difficulty are reduced, and the control precision of the electromagnetic valve can be improved;

3. the adoption of the feedback hole and the oil guide groove can reduce the coaxiality requirement and the processing difficulty of the valve core and the valve body and improve the control precision.

Drawings

FIG. 1 is a sectional view of a solenoid valve capable of improving control accuracy in an embodiment;

FIG. 2 is an exploded view of the magnetic gasket, valve body, bushing and filter screen of the embodiment;

fig. 3 is a schematic structural diagram of the client in the embodiment.

In the figure: 1. a magnetic pole; 11. salient points; 12. a large spring; 2. an armature; 21. a thin-walled sleeve; 22. a gasket; 3. a flux sleeve; 4. an electromagnetic coil; 5. a solenoid valve housing; 51. positioning ribs; 6. a valve body; 61. a magnetic conductive gasket; 611. a limiting hole; 612. a limiting column; 62. a limiting ring; 63. an oil guide groove; 64. a small spring; 65. a filter screen; 651. a screen support; 652. filtering with a screen; 7. a bushing; 71. a feedback hole; 72. a limiting ring groove; 8. a valve core; 81. a closing part; 9. a client; 91. and (6) positioning a groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.