Electromagnet set for bus control type explosion-proof hydraulic valve

Abstract

An electromagnet set for a bus control type explosion-proof hydraulic valve comprises an electromagnet A and an electromagnet B. A lead cover A is fixedly connected to the electromagnet A, and a lead cover C is fixedly connected to the electromagnet B; the lead cover A and the lead cover C are respectively connected with a wire outlet structure, a cable is led out from the wire outlet structures, the side face of the lead cover A is connected with a first wire outlet structure and a second wire outlet structure which are opposite in direction, the side face of the lead cover C is connected with a third wire outlet structure, and the third wire outlet structure faces the lead cover A; the second wire outlet structure on the lead cover A faces the third wire outlet structure on the lead cover C. The general control cable entering the first wire outlet structure has four cores, and two cores of the general control cable are connected to a wiring terminal in the electromagnet A through the interior of the lead cover A. The other two cores of the master control cable penetrate through the lead cover A, then pass through the second wire outlet structure and the third wire outlet structure, enter the lead cover C and then are connected to a wiring terminal of the electromagnet B. The electromagnet group is convenient to install.

Description

Technical Field

[0001] This utility model relates to electromagnets, and more particularly to hydraulic explosion-proof electromagnets, belonging to the field of electromechanical equipment technology. Background Technology

[0002] Explosion-proof electromagnets for hydraulic valves are a common and large type of electromagnet, used in hydraulic control applications requiring explosion protection, such as in mining and chemical environments with flammable and explosive gases. In these applications, three-position valves (three-position solenoid valves), such as three-position four-way valves, have two identical explosion-proof electromagnets fixedly installed at both ends. A lead wire cover (also called a junction box, wiring cover, explosion-proof lead wire cover, or explosion-proof lead wire cover) is fixedly installed on the electromagnet. The lead wire cover has a cable exit structure, from which the cable is led out. The control cables of the two explosion-proof electromagnets exit towards both ends, and the cables are connected to the control ports at both ends. The lead wire cover of the explosion-proof electromagnet has various cable exit structures, as shown in the attached diagram. One cable exit structure is as follows: lead wire cover A4 is fixedly connected to the explosion-proof electromagnet, and lead wire cover B12 is fixedly connected to the side of lead wire cover A4. A sealing ring 13 is installed inside lead wire cover B, and a locking nut 14 is screwed into the inside of lead wire cover B outside the sealing ring. The cable exits from the lead wire cover... The lead wire passes through the wire cover A, lead wire cover B, sealing ring, and locking nut. Some also have a lead wire fixing plate 15 installed outside the locking nut. Of course, there is more than one way to exit the wire. For example, the wire exit structure in the applicant's Chinese patent application No. 2015210725623 (a glue-sealed proportional electromagnet) (the connection structure on the lead wire cover in this patent is the wire exit structure), the wire exit structure on the junction box (i.e., the lead wire cover) in CN102568740B, and the wire exit structure disclosed on the explosion-proof cover in CN206340403U can also be used. In actual use, the following problems have been found: In many installation situations, the installation space of the hydraulic control valve (with electromagnet) is very small, and one end is often close to the equipment wall or wall. In this case, it is very difficult to lead the electromagnet cable out. Moreover, due to the increased difficulty in leading the cable, the surface of the cable is easily damaged when it comes out. Damage will reduce the explosion-proof performance of the equipment. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned problems in the three-position valve using dual electromagnets and to provide an electromagnet assembly for a bus-controlled explosion-proof hydraulic valve.

[0004] To achieve the purpose of this utility model, the following technical solution is adopted: an electromagnet assembly for a bus-controlled explosion-proof hydraulic valve, comprising two electromagnets A and B. A lead wire cover A is fixedly connected to electromagnet A, and a lead wire cover C is fixedly connected to electromagnet B. Both lead wire covers A and C are connected to a wire exit structure, from which cables are led out. Two sets of first and second wire exit structures with opposite directions are connected to the side of lead wire cover A. A third wire exit structure is connected to the side of lead wire cover C, with the third wire exit structure facing lead wire cover A. The second wire exit structure on lead wire cover A faces the third wire exit structure on lead wire cover C. The main control cable entering the first wire exit structure has at least four cores. Two cores of the main control cable pass through lead wire cover A and are connected to terminals inside electromagnet A. The other two cores of the main control cable pass through lead wire cover A, then through the second and third wire exit structures, and finally enter lead wire cover C and are connected to terminals of electromagnet B.

[0005] Furthermore, the main control cable is a four-core cable.

[0006] Furthermore, the lead wire structures connected to lead wire cover A and lead wire cover C are the same.

[0007] The positive and beneficial technical effects of this utility model are as follows: the two electromagnets of this electromagnet assembly have wires exiting from one direction, and the two electromagnets can be controlled by a main control cable. During installation, a space with convenient wire exit can be selected as the wire exit end, which improves the convenience of installation. Moreover, the cable is not easily damaged during installation, ensuring the explosion-proof performance of the electromagnet. Furthermore, this structure has a positive effect on the explosion-proof performance of the electromagnet. The specific implementation method will be described in detail. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the present invention after connecting the solenoid valve.

[0009] Figure 2 This is a schematic diagram of a traditional solenoid valve connected to two electromagnets.

[0010] Figure 3 This is a control diagram of two electromagnets on a four-core cable. Detailed Implementation

[0011] To more fully explain the implementation of this utility model, implementation examples are provided. These implementation examples are merely illustrative of this utility model and do not limit its scope.

[0012] The present invention will be further explained in detail with reference to the accompanying drawings, in which the following references are made: 1: Electromagnet A; 2: Electromagnet B; 3: Solenoid valve; 4: Lead wire cover A; 5: Lead wire cover C; 6: First outgoing wire structure; 7: Second outgoing wire structure; 8: Third outgoing wire structure; 9: Main control cable; 10: Terminal A; 11: Terminal B; 12: Lead wire cover B; 13: Sealing ring; 14: Locking nut; 15: Lead wire fixing plate; 16: Two cores connected to electromagnet A; 17: Two-core cable; 18: Two cores connected to electromagnet B.

[0013] As shown in the attached diagram, Figure 2 It is a structure with two electromagnets connected to an existing three-position solenoid valve. Figure 2 The two electromagnets are identical. A lead wire cover A4 is fixedly connected to the explosion-proof electromagnet A. A lead wire cover B12 is fixedly connected to the side of lead wire cover A4. A sealing ring 13 is installed inside lead wire cover B, and a locking nut 14 is screwed into the lead wire cover B outside the sealing ring. Two-core cables pass through lead wire cover A, lead wire cover B, the sealing ring, and the locking nut. A lead wire fixing plate 15 is installed outside the locking nut. The electromagnetic assembly in this application still uses the above-mentioned lead wire structure. It should be noted that the lead wire structure is not limited to the above-mentioned structure; various lead wire structures mentioned in the background art can all be used as the lead wire structure of this application.

[0014] An electromagnet assembly for a bus-controlled explosion-proof hydraulic valve includes two electromagnets, A1 and B2. A lead wire cover A4 is fixedly connected to electromagnet A1, and a lead wire cover C5 is fixedly connected to electromagnet B2. Both lead wire covers A4 and C2 have cable exit structures connected to them, with cables exiting from a wiring mechanism. Two sets of first and second cable exit structures 6 and 7, facing opposite directions, are connected to the side of lead wire cover A4. A third cable exit structure 8 is connected to the side of lead wire cover C5, with the third cable exit structure 8 facing the lead wire... The wire cover A has a second exit structure 7 facing the third exit structure 8 on the wire cover C. The main control cable 9 entering the first exit structure has at least four cores. In this embodiment, the main control cable is a four-core cable. Two cores of the main control cable pass through the wire cover A and are connected to the terminal A10 inside the electromagnet A1. The other two cores of the main control cable pass through the wire cover A, then through the second and third exit structures, and enter the wire cover B before being connected to the terminal B11 of the electromagnet B. Figure 3 In the diagram, 16 shows the two cores connected to electromagnet A; 18 shows the two cores connected to electromagnet B. In this embodiment, the lead wire structures connected to lead wire cover A and lead wire cover B are identical.

[0015] All original components in this application are existing original components, and the four-core master control cable is an existing commodity. Compared with existing electromagnets, an additional wire outlet structure is added to the wiring cover A, the wire outlet structure on electromagnet B is reversed, and a four-core master control cable is used.

[0016] After describing in detail the embodiments of this utility model, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the technical solution of this utility model, and this utility model is not limited to the embodiments of the examples given in the specification.

Claims

1. An electromagnet assembly for a bus-controlled explosion-proof hydraulic valve, comprising two electromagnets A and B, with a lead wire cover A fixedly connected to electromagnet A and a lead wire cover C fixedly connected to electromagnet B; both lead wire covers A and C are connected to a cable exiting structure, and the cable is led out from the wiring mechanism, characterized in that: Two sets of first and second outgoing wire structures with opposite directions are connected to the side of lead cover A. A third outgoing wire structure is connected to the side of lead cover C. The third outgoing wire structure faces lead cover A. The second outgoing wire structure on lead cover A faces the third outgoing wire structure on lead cover C. The main control cable entering the first outgoing wire structure has at least four cores. Two cores of the main control cable pass through lead cover A and are connected to the terminals inside electromagnet A. The other two cores of the main control cable pass through lead cover A, then through the second and third outgoing wire structures, and enter lead cover C before being connected to the terminals of electromagnet B.

2. The electromagnet assembly for a bus-controlled explosion-proof hydraulic valve according to claim 1, characterized in that: The main control cable is a four-core cable.

3. The electromagnet assembly for a bus-controlled explosion-proof hydraulic valve according to claim 1, characterized in that: The lead wire structures connected to lead wire cover A and lead wire cover C are the same.

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