Explosion-proof motor

Abstract

The utility model discloses an explosion-proof motor, which belongs to the technical field of motors and comprises a main body and a junction box which are mutually fixed, the box body comprises a box body and a cover body which are detachably connected, and a first sealing element and a second sealing element are arranged between the box body and the cover body. A blocking ring groove is formed in the position, corresponding to the position between the first sealing piece and the second sealing piece, of the box body, and a control piece used for reducing air pressure in the blocking ring groove is arranged in the blocking ring groove. According to the explosion-proof motor provided by the utility model, the air pressure in the blocking ring groove can be reduced, so that the damage of external air to the sealing ring I can be reduced, and the protection effect can be prolonged.

Description

Technical Field

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

[0002] An explosion-proof motor is a type of motor that can be used in flammable and explosive environments and does not produce electrical sparks during operation.

[0003] Chinese utility model patent with announcement number CN219351423U introduces an impact-resistant explosion-proof motor, belonging to the field of explosion-proof motors. The impact-resistant explosion-proof motor includes a rotor housing, a cooling fan is fixedly installed on one end of the rotating shaft located on one side of the rear cover by screws, a protective cover is sleeved on the outside of the cooling fan, and several protective rings are fixedly welded to the top of the mounting plate.

[0004] The above solution addresses the issue that external wiring harnesses need to pass through two sets of sealing nuts to enter the second chamber for wiring, thus improving the sealing of the wiring points. Additionally, an exhaust pipe is installed on one side of the first chamber and connected to the inside of the protective cover. This allows any dust entering the first chamber to be directly drawn away by the negative pressure created inside the first chamber, preventing dust from entering the second chamber and coming into contact with the wiring points, thereby improving the explosion-proof performance of the explosion-proof motor.

[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 an explosion-proof motor.

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

[0008] An explosion-proof motor includes a main body and a junction box that are fixed to each other. The junction box includes a box body and a cover body, which are detachably connected. A first seal and a second seal are provided between the box body and the cover body. A barrier annular groove is formed between the first seal and the second seal on the box body. A control element for reducing the air pressure in the barrier annular groove is provided in the barrier annular groove.

[0009] The present invention is further configured such that: a sliding tube is formed in the barrier ring groove, the two ends of the sliding tube are respectively connected to the inside of the barrier ring groove and the outside of the box; the control component includes a slider slidably disposed in the sliding tube; a sealing gasket is provided on the side wall of the slider to contact the side wall of the sliding tube; and the slider is provided with an operating component to restrict the relative sliding of the slider and the sliding tube.

[0010] The present invention is further configured such that: the operating component includes an extension portion extending into the slider, the slider and the sliding tube are rotatably connected, and both the extension portion and the sidewall of the sliding tube are threaded.

[0011] The present invention is further configured such that: the first sealing element and the second sealing element include a first sealing ring and a second sealing ring; the box body is provided with a first sealing ring groove and a second sealing ring groove from the inside to the outside; the first sealing ring and the second sealing ring are respectively slid into the first sealing ring groove and the second sealing ring groove; and the first sealing ring and the second sealing ring abut against the box body and the cover body.

[0012] The present invention is further configured such that: the sealing ring one and the sealing ring two respectively form a recess one and a recess two, and the cover body respectively forms an annular protrusion one and an annular protrusion two, and the annular protrusion one and the annular protrusion two are respectively inserted into the recess one and the recess two.

[0013] The present invention is further configured such that the box body and the cover body are connected by bolts, and the bolts are located at a position away from the sealing ring groove one in the second sealing ring groove.

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

[0015] By reducing the air pressure inside the barrier ring groove, when the sealing ring 2, which is in direct contact with the outside gas, is damaged, the outside gas will first balance the air pressure in the barrier ring groove due to the pressure difference. This can slow down the damage caused by the outside gas to the sealing ring 1 and prolong the protection effect. 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 junction box of this utility model;

[0019] Figure 4 This is a schematic diagram of the sliding tube structure of this utility model.

[0020] In the diagram: 1. Main body; 2. Box body; 3. Cover body; 4. Bolt; 5. Sealing ring one; 6. Sealing ring two; 7. Sealing ring groove one; 8. Sealing ring groove two; 9. Recess one; 10. Recess two; 11. Ring protrusion one; 12. Ring protrusion two; 13. Barrier ring groove; 14. Slider; 15. Extension; 16. Sealing gasket; 17. Sliding tube. 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 2 As shown, this application provides an explosion-proof motor, including a main body 1 and a junction box. The junction box 2 includes a box body 2 and a cover 3. The box body 2 is formed on the main body 1. A terminal block is installed inside the box body 2. At the same time, the box body 2 has a connector that passes through the box body 2. The cable will be connected to the terminal block through the connector. The box body 2 and the cover 3 are connected by bolts 4. The cover 3 will block the opening of the box body 2, so that the outside gas cannot directly enter the box body 2 and come into contact with the terminal block.

[0023] like Figure 2 and Figure 3 As shown, a sealing element 1 and a sealing element 2 are provided between the box body 2 and the cover body 3. The sealing element 1 and sealing element 2 include a sealing ring 1 5 and a sealing ring 2 6. The box body 2 has a sealing ring groove 1 7 and a sealing ring groove 2 8 formed from the inside out. The sealing ring 1 5 and sealing ring 2 6 slide into the sealing ring groove 1 7 and sealing ring groove 2 8 respectively. Under the action of the bolt 4, the sealing ring 1 5 and sealing ring 2 6 abut against the box body 2 and the cover body 3, increasing the sealing performance between the cover body 3 and the box body 2. Simultaneously, the bolt 4 is located in the sealing ring groove 2 8 at a position away from the sealing ring groove 1 7, allowing external... Gas will not enter the box 2 through the gap between bolt 4 and cover 3. Sealing ring 5 and sealing ring 6 form recess 9 and recess 10 respectively. Cover 3 has annular protrusion 11 and annular protrusion 12 respectively. Annular protrusion 11 and annular protrusion 12 are inserted into recess 9 and recess 10 respectively. The fit between annular protrusion 11 and recess 9, and between annular protrusion 12 and recess 10, can ensure the positional stability between cover 3 and sealing ring 5 and sealing ring 6, and increase the sealing performance of sealing ring 5 and sealing ring 6.

[0024] like Figure 3 and Figure 4As shown, a barrier annular groove 13 is formed between the sealing ring 5 and the sealing ring 6 corresponding to the box body 2. A sliding tube 17 is formed in the barrier annular groove 13. The two ends of the sliding tube 17 are respectively connected to the inside of the barrier annular groove 13 and the outside of the box body 2. A control component is provided in the barrier annular groove 13. The control component includes a slider 14 that is slidably disposed in the sliding tube 17. A sealing gasket 16 is provided on the side wall of the slider 14 that contacts the side wall of the sliding tube 17. The sealing gasket 16 can reduce the gap between the sliding tube 17 and the slider 14. An operating component is provided on the slider 14. The operating component includes an extension 15 extending from the slider 14. The slider 14 and the sliding tube 17 are rotatably connected. Both the extension 15 and the side wall of the sliding tube 17 are threaded.

[0025] After the cover 3 and the box 2 are connected, by rotating the slider 14, which uses the thread, the slider 14 will slide while rotating. By changing the position of the slider 14 in the sliding tube 17, the gas in the blocking ring groove 13 will enter the sliding tube 17, reducing the gas pressure in the blocking ring groove 13. When the sealing ring 6, which is in direct contact with the outside gas, is damaged, due to the pressure difference, the outside gas will first balance the pressure of the blocking ring groove 13, allowing the outside gas to enter the blocking ring groove 13 and causing dust to be deposited at the bottom of the blocking ring groove 13. This can slow down the damage to the sealing ring 5 caused by the outside gas and prolong the protection effect.

[0026] In summary, the motor provided in this embodiment can reduce the damage caused by external gas to the sealing ring 5 by reducing the air pressure in the barrier ring groove 13, thereby extending the protection effect.

[0027] 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. An explosion-proof motor, comprising a main body and a junction box fixed to each other, characterized in that: The junction box includes a box body and a cover body, which are detachably connected. A first seal and a second seal are provided between the box body and the cover body. A barrier ring groove is formed between the first seal and the second seal on the box body. A control component for reducing the air pressure in the barrier ring groove is provided in the barrier ring groove.

2. The explosion-proof motor according to claim 1, characterized in that: A sliding tube is formed inside the barrier ring groove. The two ends of the sliding tube are respectively connected to the inside of the barrier ring groove and the outside of the box. The control component includes a slider that is slidably disposed inside the sliding tube. A sealing gasket is provided on the side wall of the slider that contacts the side wall of the sliding tube. The slider is provided with an operating component that restricts the relative sliding of the slider and the sliding tube.

3. The explosion-proof motor according to claim 2, characterized in that: The operating element includes an extension extending into the slider, the slider and the sliding tube being rotatably connected, and both the extension and the sidewall of the sliding tube being threaded.

4. The explosion-proof motor according to claim 1, characterized in that: The first and second sealing components include a first sealing ring and a second sealing ring. The box body has a first sealing ring groove and a second sealing ring groove from the inside to the outside. The first sealing ring and the second sealing ring slide into the first sealing ring groove and the second sealing ring groove, respectively. The first sealing ring and the second sealing ring abut against the box body and the cover body.

5. An explosion-proof motor according to claim 4, characterized in that: The sealing ring one and sealing ring two respectively form a recess one and a recess two, and the cover body respectively forms an annular protrusion one and an annular protrusion two, which are respectively inserted into the recess one and the recess two.

6. The explosion-proof motor according to claim 4, characterized in that: The box body and the cover body are connected by bolts, and the bolts are located in the second sealing ring groove away from the first sealing ring groove.

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