Dust explosion-proof motor

Abstract

The utility model discloses a dust explosion-proof motor, which belongs to the technical field of motors and comprises a body and a junction box, the junction box comprises a box body and a box cover detachably connected to the box body, the box body is provided with a first groove and a second groove, the first groove and the second groove are communicated through a communication port, the box body is fixedly provided with a cable joint penetrating into the first groove, and the cable joint is fixedly connected with the box body. The box body is provided with a ventilation opening penetrating into the first groove, and a deformation piece is fixedly installed on the communication opening. According to the dust explosion-proof motor provided by the utility model, the rising degree of air pressure in the groove I is reduced, and the probability that the sealing effect is weakened due to high air pressure is reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a dust explosion-proof motor. Background Technology

[0002] Electric motors are widely used as a power source in various industries. Fans in flammable and explosive environments such as petroleum systems, gas pressurization stations, and thermal power plants require explosion-proof motors to provide power.

[0003] If dust enters the junction box and accumulates excessively, the junction box is prone to explosion, because junction boxes are generally sealed to keep dust out.

[0004] However, the motor generates heat when it is working. The increased temperature inside the junction box causes the internal gas to expand, resulting in excessively high air pressure inside the junction box. This high-pressure environment affects the sealing effect and reduces the sealing performance of the junction box.

[0005] This application provides another technical solution to this technical problem. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dust explosion-proof motor.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A dust explosion-proof motor includes a body and a junction box. The junction box includes a box body and a cover detachably connected to the box body. The box body has a first slot and a second slot, which are connected by a connecting port. A cable connector is fixed to the box body and extends into the first slot. The box body has a ventilation port extending into the first slot, and a deformable component is fixedly installed in the connecting port.

[0009] The present invention is further configured such that: the deformable component includes a connecting frame and an elastic rubber sheet, wherein the elastic rubber sheet is fixedly disposed at the center of the connecting frame.

[0010] The present invention is further configured such that: the deformable part further includes a pressure block for applying pressure to the connecting frame, the pressure block is equipped with a sealing gasket, the pressure block is fixedly connected to the box body by screws, and the sealing gasket contacts the connecting frame and the side wall of the box body.

[0011] The present invention is further configured such that the elastic rubber sheet has a circular structure.

[0012] The present invention is further configured such that: the box body is provided with a filter element, the filter element includes a support ring and a filter screen, the filter screen is fixed to the support ring, and the support ring is fixedly connected to the air exchange port.

[0013] The present invention is further provided with a sealing gasket 2 between the box body and the box lid.

[0014] In summary, this utility model has the following beneficial effects:

[0015] When the temperature inside the tank rises, the air inside will expand due to the heat. The expanding air will push the elastic rubber sheet to deform, reducing the degree of pressure rise inside the tank and lowering the probability of weakened sealing effect due to high air pressure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the structure of the box body of this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Main body; 2. Box body; 3. Box cover; 4. Sealing gasket 2; 5. Groove 1; 6. Groove 2; 7. Connecting frame; 8. Elastic rubber sheet; 9. Pressure block; 10. Sealing gasket 1; 11. Filter screen; 12. Support ring; 13. Cable connector. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] like Figure 1 and Figure 2As shown, this application provides a dust explosion-proof motor, including a body 1 and a junction box. The junction box includes a box body 2 and a box cover 3. The box body 2 is formed on the body 1, and the box cover 3 is detachably connected to the box body 2 by bolts. A sealing gasket 4 is provided between the box body 2 and the box cover 3. The sealing gasket 4 will deform under the pressure of the box cover 3 and the box body 2, thereby increasing the sealing effect between the box body 2 and the box cover 3.

[0023] like Figure 2 and Figure 3 as well as Figure 4 As shown, the box 2 is divided into slot 5 and slot 6. The junction box is located in slot 5. A cable connector 13 is fixed in the box 2, extending into slot 5. The cable enters slot 5 through the cable connector 13 and connects to the junction box. The cable connector 13 ensures a seal between the cable and the box 2. Slots 5 and slot 6 are connected by a connecting port. A deformable component is fixedly installed in the connecting port. The deformable component includes a connecting frame 7, an elastic rubber sheet 8, and a pressure block 9. The elastic rubber sheet 8 is fixedly located at the center of the connecting frame 7. 8 has a circular structure. The pressure block 9 is equipped with a sealing gasket 10. The pressure block 9 is fixedly connected to the box body 2 by screws. The sealing gasket 10 contacts the connecting frame 7 and the side wall of the box body 2. The connecting frame 7 will be pressed against the box body 2 under the pressure of the pressure block 9. The sealing gasket 10 ensures the sealing between the connecting frame 7 and the box body 2, as well as between the connecting frame 7 and the pressure block 9. The box body 2 has a ventilation port that extends into the slot 5. After the box body 2 and the box cover 3 are connected, the slot 5 forms a sealed space, and the slot 6 is connected to the outside through the ventilation port.

[0024] When the motor is working, the heat from the terminal block heats the space inside slot 5, causing the temperature inside slot 5 to rise. The air inside slot 5 will expand due to the heat. Relying on the elasticity of the elastic rubber sheet 8, the expanding air will push the elastic rubber sheet 8 to deform into slot 6. The space occupied by the air in slot 5 will increase, and the air in slot 6 will flow out of the junction box through the ventilation port. This reduces the rise in air pressure inside slot 5 and lowers the probability of weakened sealing effect due to high air pressure.

[0025] like Figure 2 and Figure 3 as well as Figure 4 As shown, the box 2 is equipped with a filter element, which includes a support ring 12 and a filter screen 11. The filter screen 11 is fixed to the support ring 12, and the support ring 12 is fixedly connected to the air exchange port. This allows the gas entering the second tank 6 to pass through the filter screen 11, reducing the dust particles entering the second tank 6, thereby further reducing the dust particles entering the first tank 5.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A dust explosion-proof motor, comprising a body and a junction box, characterized in that: The junction box includes a box body and a cover detachably connected to the box body. The box body has a slot 1 and a slot 2, which are connected by a connecting port. A cable connector that passes through the slot 1 is fixed to the box body. The box body has a ventilation port that passes through the slot 1. A deformable part is fixedly installed in the connecting port.

2. The dust explosion-proof motor according to claim 1, characterized in that: The deformable component includes a connecting frame and an elastic rubber sheet, with the elastic rubber sheet fixedly disposed at the center of the connecting frame.

3. The dust explosion-proof motor according to claim 2, characterized in that: The deformable component also includes a pressure block for applying pressure to the connecting frame. The pressure block is equipped with a sealing gasket. The pressure block is fixedly connected to the box body by screws. The sealing gasket is in contact with the connecting frame and the side wall of the box body.

4. The dust explosion-proof motor according to claim 2, characterized in that: The elastic rubber sheet has a circular structure.

5. The dust explosion-proof motor according to claim 1, characterized in that: The housing is equipped with a filter element, which includes a support ring and a filter screen. The filter screen is fixed to the support ring, and the support ring is fixedly connected to the air exchange port.

6. The dust explosion-proof motor according to claim 1, characterized in that: A sealing gasket is provided between the box body and the box lid.

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