CN218177999U

CN218177999U - Two-position three-way direct-acting explosion-proof electromagnetic valve

Info

Publication number: CN218177999U
Application number: CN202221990646.5U
Authority: CN
Inventors: 钟盛辉; 袁俩玖; 王燕; 张喜; 徐特; 王维波
Original assignee: Chongqing Chuanyi Automation Co Ltd
Current assignee: Chongqing Chuanyi Automation Co Ltd
Priority date: 2022-07-30
Filing date: 2022-07-30
Publication date: 2022-12-30
Anticipated expiration: 2032-07-30

Abstract

The utility model provides a two-position three-way direct-acting explosion-proof electromagnetic valve, which comprises a valve body; the explosion-proof shell is rotatably sleeved on the valve body and is locked or unlocked through the locking structure; the movable iron core is arranged in the valve body in a reciprocating manner along the axial direction of the movable iron core, the front end of the movable iron core is provided with a valve core piece, and a through central hole is formed in the movable iron core along the axial direction of the movable iron core; and the static iron core is arranged on the valve body, extends into the explosion-proof shell, is coaxially arranged with the movable iron core and is positioned above the movable iron core. The utility model discloses can realize that explosion-proof casing is 360 rotatory around self axial to can furthest eliminate the influence that different operating pressure opened, closed to the solenoid valve, improve maximum operating pressure.

Description

Two-position three-way direct-acting explosion-proof electromagnetic valve

Technical Field

The utility model belongs to the technical field of the solenoid valve, especially, relate to an explosion-proof solenoid valve of two tee bend direct action type.

Background

The solenoid valve, as one of the executing elements of the fluid control automation system, has become the first choice product of fluid control automation due to its superior characteristics of low price, simplicity, fast action, easy installation, easy maintenance, etc. The method is widely applied to automatic control equipment in the industries of manufacturing industrial equipment, energy, railway transportation, petroleum, chemical engineering, industrial automation, coal, nuclear power, military industry, ocean, aerospace and the like. Most of the application places are dangerous place areas, and certain explosion-proof level requirements are provided for the dangerous place areas. Most of the explosion-proof electromagnetic valves used in China are basically monopolized by foreign countries, and the existing domestic explosion-proof electromagnetic valves have the defects of large volume of an explosion-proof shell, incapability of rotating in any direction during installation, low cyclic utilization rate of integral parts, short service life and the like.

In terms of the rotation problem of the explosion-proof shell of the electromagnetic valve, two methods are mainly used in China: firstly, the explosion-proof shell and the valve body are connected through a certain number of bolts and nuts, and the method can only rotate at a fixed angle and cannot realize rotation at any angle; and secondly, the hole is axially positioned by the elastic check ring and then locked by the locking screw, the method realizes 360-degree arbitrary rotation, but the method can be realized only by increasing the volume of the explosion-proof shell, and the cost is higher. In the aspect of the influence of the working pressure on the opening and closing of the electromagnetic valve, the problem is mainly solved domestically by a method for increasing the reset spring force, and the method can increase the starting power of the electromagnetic valve. In the aspect of the problem of the service life delay of the cyclic utilization, a method of the whole replacement with problems is mainly adopted in China.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the utility model aims to provide an explosion-proof solenoid valve of two tee bend direct action type for there is explosion-proof casing in the solution prior art can not the rotatory and operating pressure of arbitrary direction to the problem of solenoid valve switching influence.

In order to realize the above-mentioned purpose and other relevant purposes, the utility model provides a two tee bend direct action type explosion-proof solenoid valve, include:

a valve body;

the explosion-proof shell is rotatably sleeved on the valve body and is locked or unlocked through the locking structure;

the movable iron core is arranged in the valve body in a reciprocating motion mode along the axial direction of the movable iron core, a valve core piece is arranged at the front end of the movable iron core, and a through center hole is formed in the movable iron core along the axial direction of the movable iron core; and

and the static iron core is arranged on the valve body, extends into the explosion-proof shell, is coaxially arranged with the movable iron core and is positioned above the movable iron core.

Optionally, the locking structure includes a first locking portion disposed on the valve body and a second locking portion disposed on the explosion-proof housing, and the second locking portion cooperates with the first locking portion to lock or unlock the explosion-proof housing and the valve body.

Optionally, the first locking portion is a circle of annular groove formed in the circumferential side wall of the valve body, the second locking portion is a plurality of locking holes formed in the circumferential side wall of the explosion-proof housing, and locking screws penetrate through the locking holes and abut against the annular groove or are separated from the annular groove so as to lock or unlock the explosion-proof housing and the valve body.

Optionally, a lower valve seat is further disposed in the valve body, the movable iron core is located above the lower valve seat, the valve core member forms a planar seal with the valve body and the lower valve seat respectively when the movable iron core reciprocates, a first elastic member is sleeved on the valve core member, and the first elastic member is supported between the valve core member and the valve body.

Optionally, an accommodating cavity is formed between the valve body and the lower valve seat, an air inlet, an air outlet and a working port are formed in the side wall of the valve body, a valve seat channel communicated with the air inlet is formed in the lower valve seat, the valve element moves in the accommodating cavity, and the air inlet, the air outlet and the working port are communicated with the accommodating cavity.

Optionally, the movable iron core is detachably connected with the valve core piece.

Optionally, a support ring and a seal ring are arranged between the movable iron core and the valve body, and the seal ring is located between the two support rings.

Optionally, the front end of quiet iron core connect in on the valve body, the rear end cover of quiet iron core is equipped with coil spare, coil spare is located in the explosion-proof housing to through the mounting panel with explosion-proof housing connects, so that coil spare is along with explosion-proof housing synchronous revolution, the butt joint has the second elastic component between quiet iron core and the movable iron core.

Optionally, the movable iron core comprises an installation section, a transition section and a limiting section which are sequentially connected and gradually increased in diameter, the valve core component is sleeved on the installation section, the transition section is connected with the valve body in a sealing mode, and the limiting section is located inside the front end of the static iron core and movably connected with the static iron core.

Optionally, the explosion-proof shell cover is arranged on the explosion-proof shell body in a sealing mode, an anti-drop screw hole is formed in the explosion-proof shell cover, and an anti-drop screw penetrates through the anti-drop screw hole to connect the explosion-proof shell cover and the explosion-proof shell body.

As described above, the utility model discloses following beneficial effect has:

1. the explosion-proof shell and the valve body adopt a locking connection mode matched with a locking structure, so that the installation is convenient, the axial connection and fixation effects can be achieved, and the explosion-proof shell can rotate around the axial direction of the explosion-proof shell by 360 degrees.

2. Through the through center hole structure arranged in the movable iron core, the influence of different working pressures on the opening and closing of the electromagnetic valve can be eliminated to the maximum extent, and the maximum working pressure is improved.

3. Furthermore, the valve core piece is respectively sealed with the valve body and the lower valve seat by adopting a plane, so that the service life is longer; the movable iron core and the valve core piece are detachably connected, so that the movable iron core is convenient to replace, and the movable iron core is favorable for cyclic utilization under the condition of effectively ensuring the sealing property.

4. Furthermore, the possibility of falling and losing of the fixing screw in the use and maintenance process can be reduced by adopting the explosion-proof shell cover to be matched with the anti-falling screw.

Drawings

Fig. 1 is a cross-sectional view of the overall structure of an embodiment of the present invention;

fig. 2 is a view from direction a of fig. 1 according to an embodiment of the present invention;

fig. 3 is a view from direction a of fig. 1 (without the explosion-proof case cover) in the embodiment of the present invention.

Description of reference numerals

10-a valve body; 11-an annular groove; 12-a housing chamber; 13-an air inlet; 14-an exhaust port; 15-a working port;

20-an explosion-proof shell; 21-locking holes; 22-locking screws;

30-a movable iron core; 31-a central hole; 30 a-a mounting section; 30 b-a transition section; 30 c-a limiting section;

40-a valve core piece;

50-a stationary core;

60-lower valve seat; 61-valve seat channel;

70-a coil element; 80-a mounting plate; 90-a locking member;

100-an explosion-proof shell cover; 101-a run-off prevention screw;

110-a first elastic member; 120-a second elastic member; 130-a support ring; 140/150/160/170/180-sealing ring.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description only, and are not used to limit the scope of the present invention, and the relative relationship between the terms may be changed or adjusted without substantial technical changes.

In order to describe the present invention in detail, the following description specifically describes the two-position three-way direct-acting explosion-proof solenoid valve of the present invention:

please refer to fig. 1, fig. 2 and fig. 3, the present invention provides a two-position three-way direct-acting explosion-proof solenoid valve, which includes a valve body 10, an explosion-proof housing 20, a movable iron core 30 and a stationary iron core 50, wherein the explosion-proof housing 20 is rotatably sleeved on the valve body 10 and is locked or unlocked by a locking structure; the movable iron core 30 is arranged in the valve body 10 in a reciprocating manner along the axial direction of the movable iron core 30, a valve core piece 40 is arranged at the front end of the movable iron core 30, and a through central hole 31 is formed in the movable iron core 30 along the axial direction of the movable iron core; the static iron core 50 is installed on the valve body 10 and extends into the explosion-proof housing 20, and is coaxially arranged with the movable iron core 30 and located above the movable iron core 30.

The explosion-proof shell 20 and the valve body 10 adopt a locking connection mode matched with a locking structure, so that the installation is convenient, under the condition of meeting the explosion-proof requirement, the axial connection and fixation effect can be achieved, and meanwhile, the rotation of the explosion-proof shell 20 in 360-degree arbitrary directions around the self axial direction can be realized. In addition, through the structure of the through center hole 31 arranged in the movable iron core 30, the influence of different working pressures on the opening and closing of the electromagnetic valve can be eliminated to the maximum extent, and the maximum working pressure is improved.

Specifically, the locking structure includes a first locking portion disposed on the valve body 10 and a second locking portion disposed on the explosion-proof housing 20, and the second locking portion cooperates with the first locking portion to lock or unlock the explosion-proof housing 20 and the valve body 10. Therefore, the valve body 10 and the explosion-proof housing 20 can be matched with each other during assembly by arranging the first locking part and the second locking part, and the explosion-proof housing 20 can freely rotate around the axial direction of the explosion-proof housing 20 by 360 degrees when the explosion-proof housing needs to rotate; at the end of the rotation, the explosion-proof housing 20 and the valve body 10 can be mutually matched through the first locking part and the second locking part to lock the explosion-proof housing 20 and the valve body 10.

In some embodiments, the first locking portion is a ring of annular grooves 11 formed in the circumferential side wall of the valve body 10, and the second locking portion is a plurality of locking holes 21 formed in the circumferential side wall of the explosion-proof housing 20, and is inserted into the locking holes 21 through locking screws 22 and abuts against the annular grooves 11 or is separated from the annular grooves 11, so as to lock or unlock the explosion-proof housing 20 and the valve body 10. Specifically, in the present embodiment, the valve body 10 includes a first valve body section and a second valve body section connected to each other, the first valve body section is connected to the top of the second valve body section, and the diameter of the first valve body section is smaller than that of the second valve body section. The explosion-proof housing 20 comprises a first housing section and a second housing section which are connected with each other, the first housing section is connected to the bottom of the second housing section, and the diameter of the first housing section is smaller than that of the second housing section. The annular groove 11 is located on the side wall of the first valve body section of the valve body 10, and a circle is arranged around the circumference of the first valve body section. The locking holes 21 are located on the first shell section of the explosion-proof shell 20, and are uniformly distributed along the circumference. In this embodiment, 3 locking holes 21 are uniformly distributed. The first casing section of the explosion-proof casing 20 is sleeved on the first valve body section of the valve body 10, and is inserted into the locking hole 21 through the flat-end locking screw 22 and tightly abutted against the bottom of the annular groove 11 for locking and fixing, so that the explosion-proof casing 20 can freely rotate around the valve body 10, and can be locked and fixed when rotating to a specified angle. And a sealing ring 170 for sealing is arranged between the explosion-proof housing 20 and the valve body 10 to ensure the tightness of the connection between the two.

In some embodiments, a lower valve seat 60 is further disposed in the valve body 10, the movable core 30 is located above the lower valve seat 60, the valve core 40 forms a plane seal with the valve body 10 and the lower valve seat 60 when the movable core 30 reciprocates, and a first elastic member 110 is sleeved on the valve core 40, and the first elastic member 110 is supported between the valve core 40 and the valve body 10. Specifically, lower valve seat 60 can be dismantled with valve body 10 and be connected, can adopt threaded connection mode, and is provided with two sealing washer 180 between lower valve seat 60 and the valve body 10 and fixes a position and seal, two sealing washer 180 is close to respectively the top and the bottom of valve seat. The top end and the bottom end of the valve core piece 40 respectively form plane sealing with the valve body 10 and the lower valve seat 60 under different working states, so that the switching action of the valve body 10 is realized, and in this way, on the premise of effectively ensuring the sealing property, the service life of the valve core piece 40 of the movable iron core 30 can be prolonged, so that the service life of the valve core piece is longer, and the cyclic utilization rate of non-fragile parts can be improved. The first elastic member 110 employs a return spring.

It can be understood that an accommodating cavity 12 is arranged between the valve body 10 and the lower valve seat 60, an air inlet 13, an air outlet 14 and a working port 15 are formed in the side wall of the valve body 10, a valve seat channel 61 communicated with the air inlet 13 is formed in the lower valve seat 60, the valve core member 40 moves in the accommodating cavity 12, and the air inlet 13, the air outlet 14 and the working port 15 are all communicated with the accommodating cavity 12. Specifically, in this embodiment, the air inlet 13 is located on the side wall of the valve body 10 near the bottom, the air outlet 14 is located on the side wall of the valve body 10 near the top, the air outlet 14 is located above the air inlet 13, and the working port 15 is located on the side wall of the valve body 10 and opposite to the air inlet 13 and the air outlet 14. The valve core piece 40 is driven by the reciprocating up-and-down movement of the iron core 30, so that the valve core piece 40 respectively blocks the air inlet 13 and the air outlet 14 in different movement states, and the switching of the air passages in the valve body 10 is realized.

In the above embodiment, the plunger 30 and the core member 40 are detachably connected. Specifically, in this embodiment, the movable core 30 is connected to the valve core member 40 in a threaded manner, which facilitates the replacement of the valve core member 40 and the first elastic member 110, and is more beneficial to the recycling of the non-vulnerable parts.

In the above embodiment, a support ring 130 and a seal ring 140 are disposed between the plunger 30 and the valve body 10, and the seal ring 140 is located between the two support rings 130. Specifically, the movable iron core 30 can reciprocate in the valve body 10 along the axial direction thereof, and in order to ensure the sealing performance in the movement process and reduce the friction force in the reciprocating movement process, two support rings 130 and a seal ring 140 are arranged between the movable iron core 30 and the valve body 10, the seal ring 140 is positioned between the two support rings 130 to play a role in sealing, and the two support rings 130 play a role in limiting and supporting to reduce the friction force in the reciprocating movement process.

In some embodiments, the front end of the stationary core 50 is connected to the valve body 10, the rear end of the stationary core 50 is sleeved with a coil element 70, the coil element 70 is located in the explosion-proof housing 20 and is connected to the explosion-proof housing 20 through a mounting plate 80, so that the coil element 70 rotates synchronously with the explosion-proof housing 20, and a second elastic element 120 abuts against the stationary core 50 and the movable core 30. Specifically, the front end of the static iron core 50 is connected with the rear end of the static iron core 50 in a welding manner to form an integral structure, the front end of the static iron core 50 is located in the first valve body section of the valve body 10 and is connected with the first valve body section through threads, and a sealing ring 160 is arranged between the front end of the static iron core 50 and the first valve body section to play a sealing role and provide conditions for the up-down movement of the movable iron core 30. The coil element 70 is sleeved outside the stationary core 50, and the mounting plate 80 is pressed on the coil element 70 through the locking member 90 (nut and elastic washer) sleeved on the stationary core 50, so as to axially limit the coil element 70. And, the coil part 70 is connected with the explosion-proof housing 20 through the mounting plate 80, the coil part 70 is fixedly connected to the mounting plate 80, and two ends of the mounting plate 80 are clamped with the inside of the explosion-proof housing 20, so that the coil part 70 and the explosion-proof housing 20 are relatively static, the coil part 70 and the explosion-proof housing 20 rotate together, and interference to the wiring of the coil part 70 in the rotating process is avoided. In addition, a mounting groove is opened at one end of the movable iron core 30 facing the stationary iron core 50, and the second elastic member 120 is disposed in the mounting groove and supported between the movable iron core 30 and the stationary iron core 50. The second elastic member 120 is a return spring.

In some embodiments, the movable iron core 30 includes an installation section 30a, a transition section 30b and a limiting section 30c, which are sequentially connected and have gradually increased diameters, the valve core component 40 is sleeved on the installation section 30a, the transition section 30b is hermetically connected with the valve body 10, and the limiting section 30c is located inside the front end of the stationary iron core 50 and is movably connected with the stationary iron core 50.

In some embodiments, the explosion-proof shell cover 100 is further included, the explosion-proof shell cover 100 is hermetically disposed on the explosion-proof shell 20, and an anti-drop screw hole is formed in the explosion-proof shell cover 100, and the anti-drop screw 101 is inserted into the anti-drop screw hole to connect the explosion-proof shell cover 100 and the explosion-proof shell 20. Specifically, open on the explosion-proof shell cover 100 and have 4 anticreep screw holes to be located the four corners of explosion-proof shell cover 100, when explosion-proof shell cover 100 and the cooperation installation of explosion-proof casing 20, wear to establish through 4 anticreep screws 101 and fix in the explosion-proof screw hole, and still be provided with sealing washer 150 between explosion-proof shell cover 100 and the explosion-proof casing 20, be used for guaranteeing the leakproofness that the two is connected. Thus, the possibility of falling off and losing of the anti-falling screw 101 can be reduced in the using and maintaining processes.

The working process of the two-position three-way direct-acting explosion-proof electromagnetic valve is as follows;

when the coil element 70 is in the power-off state, the movable iron core 30 and the valve element 40 move downward under the action of the first elastic element 110 and the second elastic element 120, the bottom end of the valve element 40 contacts the lower valve seat 60 to form a seal, the air inlet 13 is closed, and the air outlet 14 is opened; under the power-on state of the coil element 70 and under the action of the electromagnetic force between the stationary core 50 and the movable core 30, the movable core 30 overcomes the acting forces of the first elastic element 110 and the second elastic element 120, the movable core 30 moves upward, the air inlet 13 is opened, the top end of the valve core element 40 contacts with the valve body 10 to form a seal, and the air outlet 14 is closed, so that the switching of air passages is realized.

In summary, in the two-position three-way direct-acting type explosion-proof electromagnetic valve described in the above embodiment, the explosion-proof housing 20 and the valve body 10 adopt a locking connection manner of matching of locking structures, so that the installation is convenient, the axial connection and fixation effects can be achieved, and the explosion-proof housing 20 can rotate around the axial direction of the explosion-proof housing 20 by 360 degrees; through the through center hole 31 structure arranged in the movable iron core 30, the influence of different working pressures on the opening and closing of the electromagnetic valve can be eliminated to the maximum extent, and the maximum working pressure is improved; the valve core piece 40 is respectively in plane sealing with the valve body 10 and the lower valve seat 60, so that the service life is longer; the movable iron core 30 and the valve core piece 40 are detachably connected, so that the movable iron core is convenient to replace and is beneficial to cyclic utilization under the condition of effectively ensuring the sealing property; by adopting the explosion-proof shell cover 100 to match with the anti-drop screw 101, the possibility of dropping and losing the fixing screw in the use and maintenance process can be reduced.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides an explosion-proof solenoid valve of two tee bend direct action type which characterized in that: comprises that

A valve body;

the movable iron core is arranged in the valve body in a reciprocating manner along the axial direction of the movable iron core, a valve core piece is arranged at the front end of the movable iron core, and a through central hole is formed in the movable iron core along the axial direction of the movable iron core; and

2. The two-position three-way direct-acting explosion-proof electromagnetic valve according to claim 1, characterized in that: the locking structure comprises a first locking part arranged on the valve body and a second locking part arranged on the explosion-proof shell, and the second locking part is matched with the first locking part to lock or unlock the explosion-proof shell and the valve body.

3. The two-position three-way direct-acting explosion-proof electromagnetic valve according to claim 2, characterized in that: the first locking portion is a circle of annular grooves formed in the circumferential side wall of the valve body, the second locking portion is a plurality of locking holes formed in the circumferential side wall of the explosion-proof shell, the locking holes are arranged in the locking holes in a penetrating mode through locking screws and abut against the annular grooves or are separated from the annular grooves, and therefore the explosion-proof shell and the valve body can be locked or unlocked.

4. The two-position three-way direct-acting explosion-proof electromagnetic valve according to claim 1, characterized in that: the valve core component is characterized in that a lower valve seat is further arranged in the valve body, the movable iron core is located above the lower valve seat, the valve core component and the valve body and the lower valve seat form plane sealing respectively when the movable iron core reciprocates, a first elastic component is sleeved on the valve core component, and the first elastic component is supported between the valve core component and the valve body.

5. The two-position three-way direct-acting explosion-proof electromagnetic valve according to claim 4, characterized in that: the valve comprises a valve body, a lower valve seat, a valve core piece, an air inlet, an air outlet and a working port, wherein the valve body is arranged in the lower valve seat, the lower valve seat is provided with a valve seat channel communicated with the air inlet, the valve core piece moves in the accommodating cavity, and the air inlet, the air outlet and the working port are communicated with the accommodating cavity.

6. The two-position three-way direct-acting explosion-proof electromagnetic valve according to claim 1, characterized in that: the movable iron core is detachably connected with the valve core piece.

7. The two-position three-way direct-acting explosion-proof electromagnetic valve according to claim 1, characterized in that: and a support ring and a sealing ring are arranged between the movable iron core and the valve body, and the sealing ring is positioned between the two support rings.

8. The two-position three-way direct-acting explosion-proof electromagnetic valve according to claim 1, characterized in that: the front end of quiet iron core connect in on the valve body, the rear end cover of quiet iron core is equipped with coil spare, coil spare is located in the explosion-proof housing to through the mounting panel with explosion-proof housing connects, so that coil spare is along with explosion-proof housing synchronous revolution, the butt joint has the second elastic component between quiet iron core and the movable iron core.

9. The two-position three-way direct-acting explosion-proof electromagnetic valve according to claim 1, characterized in that: the movable iron core comprises an installation section, a transition section and a limiting section which are sequentially connected and gradually increased in diameter, the valve core component is sleeved on the installation section, the transition section is connected with the valve body in a sealing mode, and the limiting section is located inside the front end of the static iron core and movably connected with the static iron core.

10. The two-position three-way direct-acting explosion-proof electromagnetic valve according to claim 1, characterized in that: the anti-falling device is characterized by further comprising an anti-falling shell cover, wherein the anti-falling shell cover is arranged on the anti-falling shell body in a sealing mode, anti-falling screw holes are formed in the anti-falling shell cover, and anti-falling screws penetrate through the anti-falling screws to connect the anti-falling shell cover and the anti-falling shell body.