Waterproof and explosion-proof switch with multiple sealing structures

Abstract

The utility model provides a waterproof explosion-proof switch adopting a multiple sealing structure, which comprises a switch box body, an inner isolation seat is arranged in the switch box body, two wire holders are arranged in the inner isolation seat, one sides of the two wire holders are provided with an electric contact plate, one end of an operating rod is connected with a push seat, and the other end of the operating rod is connected with a push rod. One end of the push seat is provided with a power connection contact, and the power connection contact is arranged between the two power connection contact plates; according to the utility model, the inner isolation seat is arranged in the switch box body, and the wire holder, the power connection contact box and the power connection contact plate are all arranged in the inner isolation seat, so that when the power connection contact and the power connection contact plate are electrified, the operating rod can be pushed towards the inner side of the switch box body, and the operating rod pushes the push seat in the inner isolation seat to slide; and the power connection contact at the front end of the push seat is extruded between the two power connection contact plates, so that the power connection contact and the power connection contact plates are electrified, and the power connection protection effect is good.

Description

A waterproof and explosion-proof switch with a multi-seal structure Technical Field

[0001] This utility model belongs to the field of explosion-proof switch technology, and relates to a waterproof and explosion-proof switch with a multi-seal structure. Background Technology

[0002] Explosion-proof switches are mainly used in manufacturing plants for machinery and equipment and power supply systems in environments where flammable gases or explosive dusts may exist, especially for external electrical equipment such as motors, pumps, and lighting equipment; they are also used in process control devices in hazardous factories and plants, or in explosive environments of flammable gases, vapors, mists, or flammable dusts. Currently, explosion-proof switches have a single-layer sealed structure, which results in poor sealing at the switch control point and needs improvement. Summary of the Invention

[0003] The purpose of this invention is to provide a waterproof and explosion-proof switch with a multi-seal structure to solve the problems mentioned in the background art.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A waterproof and explosion-proof switch with a multi-seal structure includes a switch box and a top cover. The switch box has an inner isolation seat inside, and two terminal blocks are arranged inside the inner isolation seat. A contact plate is arranged on one side of each terminal block. An operating rod is arranged at one end of the terminal block. One end of the operating rod is connected to a push base. One end of the push base is provided with a contact plate, which is located between the two contact plates.

[0006] In the aforementioned waterproof and explosion-proof switch with a multi-seal structure, multiple reinforcing side plates are provided between the side of the inner isolating seat and the switch box, and the multiple reinforcing side plates are evenly spaced apart.

[0007] In the aforementioned waterproof and explosion-proof switch with a multi-seal structure, the inner isolating seat is provided with a partition, and the interior of the inner isolating seat is divided into an inner chamber and an outer chamber by the partition. The terminal block and push block are located inside the inner chamber.

[0008] In the aforementioned waterproof and explosion-proof switch with a multi-seal structure, an isolation chamber is provided inside the outer cavity, and one end of the operating rod passes through the partition and the isolation chamber in sequence and is placed on the outside of the switch box.

[0009] In the aforementioned waterproof and explosion-proof switch with a multi-seal structure, two inner support frames are provided on one side of the switch box. One end of each inner support frame is connected to the end of the inner isolation seat, and a guide plate is provided between the two inner support frames.

[0010] In the aforementioned waterproof and explosion-proof switch with a multi-seal structure, two sealing rings are provided at the end of the inner isolating seat, an inlet terminal is provided on the outside of the switch box, and a top cover is provided on the top of the switch box.

[0011] In the aforementioned waterproof and explosion-proof switch with a multi-seal structure, compression springs are provided on both sides of the inner isolating seat. One end of each compression spring is connected to a compression plate, and the compression plate presses against the outside of the push seat.

[0012] Compared with the prior art, the advantages of this utility model of a waterproof and explosion-proof switch with a multi-seal structure are as follows:

[0013] 1. This application provides an internal isolation seat inside the switch box, where the terminal block, contact box, and contact plate are all located. When the contact and contact plate are energized, the operating lever can be pushed towards the inside of the switch box. The operating lever pushes the push seat inside the internal isolation seat to slide, and the contact at the front end of the push seat is pressed between the two contact plates, thus energizing the contact and contact plate. This provides good protection against electrical leakage.

[0014] 2. This application provides a partition and an isolation chamber at the connection between the operating rod and the switch box. The operating rod needs to pass through the partition and the isolation chamber in sequence to connect with the push plate inside the inner isolation seat. In this way, liquid will not enter the inner isolation seat from the position of the operating rod, thus achieving multiple waterproofing. Attached Figure Description

[0015] Figure 1 is a structural schematic diagram of a waterproof and explosion-proof switch with a multi-seal structure according to the present invention.

[0016] Figure 2 is a schematic diagram of the internal structure of a waterproof and explosion-proof switch with a multi-seal structure according to this utility model.

[0017] Figure 3 is a schematic diagram of a waterproof and explosion-proof switch push base structure with a multi-seal structure according to this utility model.

[0018] In the diagram, 1. Switch box; 2. Top cover; 3. Inlet terminal block; 4. Inner isolation seat; 5. Reinforced side plate; 6. Isolation chamber; 7. Partition; 8. Inner support frame; 9. Guide plate; 10. Sealing ring; 11. Push seat; 12. Operating lever; 13. Pressure plate; 14. Pressure spring; 15. Terminal block; 16. Electrical contact; 17. Electrical contact plate. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] A waterproof and explosion-proof switch with a multi-seal structure includes a switch box 1 and a top cover 2. The switch box 1 has an inner isolation seat 4 inside, and two terminal blocks 15 are arranged inside the inner isolation seat 4. A contact plate 17 is arranged on one side of the two terminal blocks 15. An operating rod 12 is arranged at one end of the inner side of the terminal block 15. One end of the operating rod 12 is connected to a push seat 11. One end of the push seat 11 is provided with a contact 16, and the contact 16 is arranged between the two contact plates 17.

[0021] As shown in Figures 1, 2 and 3, this utility model provides a waterproof and explosion-proof switch with a multi-seal structure. Specifically, multiple reinforcing side plates 5 are provided between the side of the inner isolation seat 4 and the switch box 1, and the multiple reinforcing side plates 5 are evenly distributed.

[0022] As shown in Figures 1, 2 and 3, this utility model provides a waterproof and explosion-proof switch with a multi-seal structure. Specifically, the inner isolation seat 4 is provided with a partition 7, and the interior of the inner isolation seat 4 is divided into an inner chamber and an outer chamber by the partition 7. The terminal block 15 and the push seat 11 are arranged inside the inner chamber.

[0023] As shown in Figures 1, 2 and 3, this utility model provides a waterproof and explosion-proof switch with a multi-seal structure. Specifically, an isolation chamber 6 is provided inside the outer cavity, and one end of the operating rod 12 passes through the partition 7 and the isolation chamber 6 in sequence and is placed on the outside of the switch box 1.

[0024] As shown in Figures 1, 2, and 3, this utility model provides a waterproof and explosion-proof switch with a multi-seal structure. Specifically, two inner support frames 8 are provided on one side of the switch box 1. One end of the inner support frame 8 is connected to the end of the inner isolation seat 4, and a guide plate 9 is provided between the two inner support frames 8. The guide plate 9 is used to prevent liquid from entering the switch box 1 and guiding the liquid to the bottom of the inner isolation seat 4, so that it will not enter the interior of the inner isolation seat 4.

[0025] As shown in Figures 1, 2, and 3, this utility model discloses a waterproof and explosion-proof switch with a multi-seal structure. Specifically, two sealing rings 10 are provided at the end of the inner isolating seat 4, an inlet terminal 3 is provided on the outside of the switch box 1, and a top cover 2 is provided on the top of the switch box 1. The bottom of the top cover 2 has a rubber pad. When the top cover 2 is installed, the rubber pad can be pressed tightly against the top of the inner isolating seat 4 to seal the inner isolating seat 4. The external line enters the interior of the switch box 1 through the inlet terminal 3, then passes through the sealing rings 10 to enter the interior of the inner isolating seat 4, and is then fixed in the wiring groove inside the terminal block 15.

[0026] As shown in Figures 1, 2, and 3, this utility model discloses a waterproof and explosion-proof switch with a multi-seal structure. Specifically, both sides of the inner isolating seat 4 are provided with compression springs 14. One end of the compression spring 14 is connected to a compression plate 13, and the compression plate 13 presses against the outside of the push seat 11. The compression springs 14 press against the push seat 11, which makes the wiring more stable. In addition, the push seat 11, compression plate 13, and operating rod 12 of this application are all made of insulating materials, making the operation safer.

[0027] This utility model discloses a waterproof and explosion-proof switch with a multi-seal structure. When power is required, the operating rod 12 can be pushed towards the inside of the switch box 1. The operating rod 12 pushes the push seat 11 inside the inner isolation seat 4 to slide forward. The power contact 16 at the front end of the push seat 11 is pressed between the two power contact plates 17, so that the power contact 16 contacts the power contact plates 17, thereby energizing and realizing the circuit connection of the two terminal blocks 15.

[0028] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A waterproof and explosion-proof switch with a multi-layer sealing structure, comprising a switch housing (1) and a top cover (2), characterized in that, The switch box (1) is provided with an inner isolation seat (4), and the inner isolation seat (4) is provided with two terminal blocks (15). One side of the two terminal blocks (15) is provided with a contact plate (17). One end of the terminal block (15) is provided with an operating rod (12). One end of the operating rod (12) is connected to a push seat (11). One end of the push seat (11) is provided with a contact plate (16), and the contact plate (16) is located between the two contact plates (17).

2. A waterproof and explosion-proof switch with a multi-seal structure according to claim 1, characterized in that, Multiple reinforcing side plates (5) are provided between the side of the inner isolation seat (4) and the switch box (1), and the multiple reinforcing side plates (5) are evenly separated.

3. A waterproof and explosion-proof switch with a multi-seal structure according to claim 1, characterized in that, The inner isolation seat (4) is provided with a partition (7), and the interior of the inner isolation seat (4) is divided into an inner chamber and an outer chamber by the partition (7). The wiring seat (15) and the push seat (11) are located inside the inner chamber.

4. A waterproof and explosion-proof switch with a multi-seal structure according to claim 3, characterized in that, An isolation chamber (6) is provided inside the outer cavity, and one end of the operating rod (12) passes through the partition (7) and the isolation chamber (6) in sequence and is placed on the outside of the switch box (1).

5. A waterproof and explosion-proof switch with a multi-seal structure according to claim 1, characterized in that, Two inner support frames (8) are provided on one side of the inside of the switch box (1). One end of the inner support frame (8) is connected to the end of the inner isolation seat (4), and a guide plate (9) is provided between the two inner support frames (8).

6. A waterproof and explosion-proof switch with a multi-seal structure according to claim 1, characterized in that, The inner isolation seat (4) has two sealing rings (10) at its end, the switch box (1) has an inlet terminal seat (3) on its outer side, and the switch box (1) has a top cover (2) on its top.

7. A waterproof and explosion-proof switch with a multi-seal structure according to claim 1, characterized in that, Both sides of the inner isolation seat (4) are provided with compression springs (14), one end of the compression spring (14) is connected to a compression plate (13), and the compression plate (13) is pressed against the outside of the push seat (11).

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