Explosion-proof electromagnetic valve arranged transversely

Abstract

The utility model discloses a transverse setting's explosion -proof electromagnetic valve, including valve body, pilot valve body, coil box, terminal box and terminal cover, pilot valve body and valve body are axial rotation connection between, and are fixed through the internal hexagonal cylindrical head screw, be equipped with pilot piston and pilot drive unit in pilot valve body, and pilot drive unit is fixed in pilot valve body through cross -groove countersunk screw, and coil box passes through pilot drive unit and is fixed and locked through rain -proof cap and jack screw, and terminal box is installed in the corresponding position of coil box, and is prevented from loosening through jack screw, be equipped with ceramic terminal in terminal box, and ceramic terminal is fixed in terminal box through cross -groove disc head screw, and terminal cover is screwed in terminal box and is locked through jack screw. The utility model discloses axial installation solenoid head structure, and leave enough filter pressure reducing valve installation space, can install with rubber seal ring and special screw, and efficiency improves greatly, and the risk of installation air tightness is small, and quality guarantee property is strong.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, specifically to a horizontally arranged explosion-proof electromagnetic valve. Background Technology

[0002] Currently, the explosion-proof solenoid valves widely used in the domestic market have a fixed installation direction when installing pressure regulating valves, and the orientation cannot be adjusted. Furthermore, when used outdoors, water ingress into the actuator causes rapid erosion of grease and the formation of dirt, increasing resistance and reducing actuator lifespan. Specifically, when connecting explosion-proof solenoid valves and filter pressure reducing valves, it is necessary to bend stainless steel rigid pipes for overhead installation, or use two or more reducing elbows for connection. The joints need to be wrapped with Teflon tape, resulting in slow installation and potential risks to airtightness after installation. Utility Model Content

[0003] The purpose of this utility model is to provide a horizontally arranged explosion-proof solenoid valve with an axially mounted solenoid head structure, sufficient space for the installation of the filter pressure reducing valve, and installation using rubber sealing rings and special screws, which greatly improves efficiency, reduces the risk of airtightness during installation, and ensures high quality, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a horizontally arranged explosion-proof solenoid valve, comprising a valve body, a pilot valve body, a coil box, a terminal box, and a terminal cover. The pilot valve body is axially rotatably connected to the valve body and fixed by hexagonal head screws. The pilot valve body contains a pilot piston and a pilot drive unit, which is fixed to the pilot valve body by Phillips head countersunk screws. The coil box passes through the pilot drive unit and is fixed and locked by a rain cap and a set screw. The terminal box is installed at the corresponding position of the coil box and is prevented from loosening by a set screw. The terminal box contains ceramic terminals, which are fixed inside the terminal box by Phillips head screws. The terminal cover is screwed into the terminal box and locked by a set screw.

[0005] Preferably, the valve body is provided with a V-shaped groove.

[0006] Preferably, the terminal box is provided with a first wiring hole and a second wiring hole.

[0007] Preferably, the wires of the pilot drive unit pass through the first and second wiring holes and are fixed to the ceramic terminal block after being sealed by epoxy resin casting.

[0008] Preferably, the pilot drive unit and the valve core are located on the same axis.

[0009] Preferably, a Y-ring is installed between the pilot piston and the pilot valve body.

[0010] Preferably, a first O-ring and a second O-ring are installed between the pilot drive unit and the pilot valve body.

[0011] Preferably, a third O-ring is installed between the coil box and the terminal box.

[0012] Preferably, a fourth O-ring is installed in the groove where the terminal cover and the terminal box are screwed together.

[0013] Preferably, the rain cap and the pilot drive unit are arranged laterally.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The horizontally arranged explosion-proof solenoid valve uses insulating ceramic material for the terminal insulation, which is heat-resistant and does not deform over a long period of time; the wiring passage of the junction box is sealed with epoxy resin, and the protection level can reach IP67 or above; and the pilot drive component is coaxial with the valve core; the filter pressure reducing valve can be directly fixed to the explosion-proof solenoid valve, reducing connection joints, improving assembly efficiency and airtightness, saving space, reducing the use of brackets, and being green and environmentally friendly.

[0015] 2. The explosion-proof solenoid valve with a horizontal orientation and V-groove machined on the valve body solves the problem of rapid grease erosion and dirt formation caused by water ingress into the actuator during outdoor use, which increases resistance and reduces actuator life.

[0016] 3. This horizontally positioned explosion-proof solenoid valve adopts an axial rotation connection structure, which allows the explosion-proof pipe to be installed at multiple angles. This compensates for differences in the length of the explosion-proof pipe and enables quick and efficient on-site replacement during secondary technical modifications. In addition, the rain cap of the pilot head has been changed to a horizontal position, which eliminates the possibility of rainwater entering the pilot head and also solves the problem of changes in the pilot head stroke caused by collisions. Attached Figure Description

[0017] Figure 1 This is a front view of the present invention; Figure 2 This is a utility model Figure 1 Cross-sectional view; Figure 3 This is a utility model Figure 1 A partial cross-sectional view; Figure 4 This is a top view of the present invention; Figure 5 This is a front view of the existing valve body structure; Figure 6 This is a top view of the existing valve body structure.

[0018] In the diagram: 1. Valve body; 101. V-groove; 2. Pilot valve body; 3. Phillips head countersunk screw; 4. First O-ring seal; 5. Socket head cap screw; 6. Pilot piston; 7. Y-ring; 8. Set screw; 9. Second O-ring seal; 10. Pilot drive unit; 11. Rain cap; 12. Coil box; 13. Third O-ring seal; 14. Terminal box; 141. First wiring hole; 142. Second wiring hole; 15. Ceramic terminal block; 16. Phillips head pan screw; 17. Fourth O-ring seal; 18. Terminal cover. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This embodiment provides a horizontally arranged explosion-proof solenoid valve, including a valve body 1, a pilot valve body 2, a coil box 12, a terminal box 14, and a terminal cover 18. The pilot valve body 2 is axially rotatably connected to the valve body 1 and is fixed by an internal hexagon head screw 5. The pilot valve body 2 is provided with a pilot piston 6 and a pilot drive unit 10. A Y-ring 7 is installed between the pilot piston 6 and the pilot valve body 2, and a first O-ring 4 and a second O-ring 9 are installed between the pilot drive unit 10 and the pilot valve body 2. The pilot drive unit 10 is fixed to the pilot valve body 1 by a cross-head countersunk screw 3. Inside the pilot valve body 2; the coil box 12 passes through the pilot drive unit 10 and is fixed and locked by the rain cap 11 and the set screw 8; the terminal box 14 is installed in the corresponding position of the coil box 12 and is prevented from loosening by the set screw 8; a third O-ring seal 13 is installed between the coil box 12 and the terminal box 14; a ceramic terminal 15 is provided inside the terminal box 14, and the ceramic terminal 15 is fixed inside the terminal box 14 by a cross-slot pan head screw 16; the terminal cover 18 is screwed into the terminal box 14 and locked by the set screw 8, and a fourth O-ring seal 17 is installed in the groove where the terminal cover 18 and the terminal box 14 are screwed together.

[0021] In the above embodiment, the valve body 1 is provided with a V-groove 101. The V-groove 101 is machined to solve the problem that when the valve body 1 is used outdoors, water ingress into the actuator causes grease to be quickly washed away and dirt to form, which increases resistance and reduces the life of the actuator.

[0022] In this embodiment, the terminal box 14 is provided with a first wiring hole 141 and a second wiring hole 142. The wires of the pilot drive unit 10 pass through the first wiring hole 141 and the second wiring hole 142, and are fixed to the ceramic terminal 15 after being sealed by epoxy resin casting. The terminal box 14 uses epoxy resin to cast and seal the wire passage, and the protection level can reach IP67 or above. The insulating part of the terminal is made of insulating ceramic material, which is heat resistant and does not deform over a long period of time.

[0023] In addition, the pilot drive unit 10 and the valve core are located on the same axis in this embodiment, which allows the filter pressure reducing valve to be directly fixed to the explosion-proof solenoid valve, reducing the number of connection joints, improving assembly efficiency and airtightness, saving space, reducing the use of brackets, and being green and environmentally friendly.

[0024] Furthermore, the rain cap 11 and the pilot drive unit 10 are arranged laterally, which eliminates the possibility of rainwater entering the guide head and also solves the problem of changes in the guide head stroke caused by collisions.

[0025] During assembly, first, place the Y-ring 7 into the pilot piston 6, then place the assembled Y-ring 7 and pilot piston 6 into the pilot valve body 2, and fix the pilot valve body 2 and valve body 1 with hexagonal head screws 5; then, place the first O-ring 4 into the pilot drive unit 10, place the pilot drive unit 10 into the corresponding position of the pilot valve body 2, and fix it with cross-head countersunk screws 3; then, place the second O-ring 9 into the pilot drive unit 10, pass the coil box 12 through the pilot drive unit 10, and fix and lock it with the rain cap 11 and set screw 8; then, place the third O-ring 13 into... Place the terminal box 14 into the corresponding position of the coil box 12, and prevent it from loosening by using the set screw 8; then fix the ceramic terminal 15 into the terminal box 14 by the cross-slot pan head screw 16, put the fourth O-ring 17 into the slot of the terminal cover 18, and then screw the terminal cover 18 with the fourth O-ring 17 into the terminal box 14 and lock it with the set screw 8. Finally, the wire of the pilot drive unit 10 passes through the first wiring hole 141 and the second wiring hole 142 of the terminal box 14, and is fixed to the ceramic terminal 15 after being sealed by epoxy resin casting.

[0026] Compared with existing technologies, such as Figure 5-6As shown, the shortcomings of the existing technology are: the pilot part is perpendicular to the valve stem, and the pressure regulating valve cannot rotate in any direction. Some explosion-proof solenoid valves have inadequate explosion-proof treatment and poor waterproof performance. The explosion-proof head can only rotate in one direction, causing some installation inconveniences. Some explosion-proof solenoid valves have damaged insulation terminals after a period of use. There is only one vent port on the solenoid valve. When using a single-acting actuator outdoors, water can flow into the actuator during rain. In contrast, the wiring terminal insulation of this utility model is made of insulating ceramic material, which is heat-resistant and does not deform over a long period of time; the wiring junction is sealed with epoxy resin, and the protection level can reach IP67 or above; and the pilot drive component is coaxial with the valve core; the filter pressure reducing valve can be directly fixed to the explosion-proof solenoid valve, reducing connection joints, improving assembly efficiency and airtightness, saving space, reducing the use of brackets, and being environmentally friendly; the V-groove 101 machined on the valve body 1 solves the problem of rapid grease washing and dirt formation caused by water ingress into the actuator during outdoor use, which increases resistance and reduces the life of the actuator. In addition, the axial rotational connection structure between the pilot valve body 2 and the valve body 1 allows the explosion-proof pipe to be installed at multiple angles, compensating for differences in the length of the explosion-proof pipe and enabling quick and efficient on-site replacement during secondary technical modifications.

[0027] Furthermore, it should be noted that the working principle of the explosion-proof solenoid valve of this utility model is the same as that of the prior art, and will not be elaborated here. The focus of protection of this utility model is on structural improvement. Relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transversely arranged explosion-proof solenoid valve, comprising a valve body (1), a pilot valve body (2), a coil box (12), a terminal box (14), and a terminal cover (18), characterized in that: The pilot valve body (2) is axially rotatably connected to the valve body (1) and is fixed by an internal hexagonal head screw (5); the pilot valve body (2) is provided with a pilot piston (6) and a pilot drive unit (10), and the pilot drive unit (10) is fixed in the pilot valve body (2) by a cross-slot countersunk screw (3); the coil box (12) passes through the pilot drive unit (10) and is fixed and locked by a rain cap (11) and a set screw (8); the terminal box (14) is installed in the corresponding position of the coil box (12) and is prevented from loosening by a set screw (8); the terminal box (14) is provided with a ceramic terminal (15), and the ceramic terminal (15) is fixed in the terminal box (14) by a cross-slot pan head screw (16); the terminal cover (18) is screwed in the terminal box (14) and locked by a set screw (8).

2. The explosion-proof solenoid valve arranged laterally according to claim 1, characterized in that: The valve body (1) is provided with a V-groove (101).

3. The explosion-proof solenoid valve arranged laterally according to claim 1, characterized in that: The terminal box (14) is provided with a first wiring hole (141) and a second wiring hole (142).

4. The explosion-proof solenoid valve arranged laterally according to claim 3, characterized in that: The wires of the pilot drive unit (10) pass through the first wiring hole (141) and the second wiring hole (142), and are fixed to the ceramic terminal (15) after being sealed by epoxy resin casting.

5. The explosion-proof solenoid valve arranged laterally according to claim 1, characterized in that: The pilot drive unit (10) and the valve core are located on the same axis.

6. The explosion-proof solenoid valve arranged laterally according to claim 1, characterized in that: A Y-ring (7) is installed between the pilot piston (6) and the pilot valve body (2).

7. The explosion-proof solenoid valve arranged laterally according to claim 1, characterized in that: A first O-ring (4) and a second O-ring (9) are installed between the pilot drive unit (10) and the pilot valve body (2).

8. The explosion-proof solenoid valve arranged laterally according to claim 1, characterized in that: A third O-ring (13) is installed between the coil box (12) and the terminal box (14).

9. The explosion-proof solenoid valve arranged laterally according to claim 1, characterized in that: The slot where the terminal cover (18) is screwed to the terminal box (14) is fitted with a fourth O-ring seal (17).

10. A transversely arranged explosion-proof solenoid valve according to claim 1, characterized in that: The rain cap (11) and the pilot drive unit (10) are arranged horizontally.

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