High-efficiency explosion-proof motor for preventing leakage of flammable and explosive gas

Abstract

The utility model belongs to the field of explosion-proof motors, and particularly relates to a high-efficiency explosion-proof motor capable of preventing flammable and explosive gas from leaking, which comprises a shell, a rotor is arranged in the shell, a stator is fixedly mounted in the shell, a right end cover is mounted at the right end of the shell through a bolt, and a left end cover is fixedly connected to the left end of the shell. A carbon tube is arranged on the outer side of the rotor, a rotating shaft is fixedly connected to the interior of the rotor, and two symmetrically-distributed sealing rings are fixedly connected to the interior of the shell. According to the utility model, the outer side of the rotor is additionally provided with the carbon tube, because the carbon fiber tube is high in strength and high in temperature resistance, if the carbon fiber tube is not magnetic-conductive, the carbon fiber tube cannot cause interference of some magnetic fields between the stator and the rotor, and explosive gas cannot be thrown out of the stator after entering the rotor from gaps such as the bearing and the inner cover for a long time; therefore, the explosion of the motor can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof motors, in particular to a high-efficiency explosion-proof motor for preventing the leakage of inflammable and explosive gases. Background Technique

[0002] An explosion-proof motor is a kind of motor that can be used in inflammable and explosive places and does not generate electric sparks during operation. Explosion-proof motors are mainly used in coal mines, oil and natural gas, petrochemical and chemical industries. However, in the prior art, there is no air gap relationship between the stator and the rotor in the rotating shaft of the motor, and nothing is added. If inflammable and explosive gases come in through the main pipe, the gases can escape through some gaps such as the base, resulting in the circuit of the motor being prone to gas explosion. Moreover, during the process of adding lubricating oil, the filter cover is not stably placed, affecting the addition of lubricating oil. Therefore, the prior art needs to be improved. Content of the Utility Model

[0003] The purpose of the utility model is to provide a high-efficiency explosion-proof motor for preventing the leakage of inflammable and explosive gases, and solve the problems that the sparks generated by the rotor are prone to cause explosion and the lubricating oil is not convenient to add.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A high-efficiency explosion-proof motor for preventing the leakage of inflammable and explosive gases, including a housing, a rotor is arranged inside the housing, a stator is fixedly installed inside the housing, a right end cover is installed at the right end of the housing through bolts, a left end cover is fixedly connected to the left end of the housing, a carbon tube is arranged outside the rotor, a rotating shaft is fixedly connected inside the rotor, two symmetrically distributed sealing rings are fixedly connected inside the housing, a junction box is fixedly connected to the upper end of the housing, an axial flow fan is fixedly installed at the right end of the housing, and a lubricating oil filling mechanism is arranged on the housing.

[0005] Preferably, the sealing ring at the left end of the housing is in contact with the left end cover, the sealing ring at the right end of the housing is in contact with the right end cover, and the input end of the axial flow fan is slidably connected to the rotating shaft. The axial flow fan can dissipate heat from the housing through air flow.

[0006] Preferably, a bearing cover is fixedly connected inside the left end cover, the bearing cover is rotatably connected to the rotating shaft, and the rotating shaft is connected to both the left end cover and the right end cover through bearings. The bearing cover can seal the connection between the rotating shaft and the left end cover.

[0007] Preferably, the lubricating oil filling mechanism includes an oil filling pipe, the oil filling pipe is fixedly connected inside the housing, a sealing cover is threadedly connected inside the pipe orifice of the oil filling pipe, a filter cover is slidably connected inside the oil filling pipe, an inclined surface frame is fixedly connected to the upper end of the filter cover, a fixing plate is fixedly connected to the lower end of the inclined surface frame, a connecting rod is slidably connected inside the fixing plate, an arc-shaped column is fixedly connected to the end of the connecting rod away from the fixing plate, a spring is arranged outside the connecting rod, and a sealing ring is fixedly connected to the upper part of the inner wall of the oil filling pipe. The arc-shaped column can limit the filter cover.

[0008] Preferably, the inclined surface frame contacts the sealing cover, the inclined surface frame is slidably connected to the oil filling pipe, the sealing ring is slidably connected to the filter cover, and the arc-shaped column is slidably connected to the inclined surface frame. The sealing ring can increase the sealing performance between the filter cover and the oil filling pipe.

[0009] Preferably, one end of the spring is fixedly connected to the fixing plate, the other end of the spring is fixedly connected to the arc-shaped column, and the arc-shaped column is clamped to the oil filling pipe. The spring can drive the arc-shaped column to automatically reset through elastic force.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. By adding a carbon tube outside the rotor in the present utility model, because the carbon fiber tube has high strength and high temperature resistance, if it is non-magnetic, it will not cause some magnetic field interference between the stator and the rotor. And if the explosive gas enters the rotor from the gaps such as the bearings and the inner cover, after a long time, it will no longer be thrown out from the stator, thus effectively avoiding the explosion of the motor.

[0012] 2. By adding structures such as an oil filling pipe, a filter cover and an arc-shaped column to the housing in the present utility model, during the use process, the elastic force of the spring can drive the arc-shaped column to be clamped inside the oil filling pipe, which can limit the filter cover, so that the placement of the filter cover is more stable and the lubricating oil is more convenient to add. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is the Figure 1 left view of the present utility model;

[0015] Figure 3 is the Figure 1 stereogram of the lubricating oil filling mechanism of the present utility model;

[0016] Figure 4 is the Figure 3 stereoscopic sectional view of the present utility model;

[0017] Figure 5 For the present utility model Figure 4 is an enlarged view of the structure of part A.

[0018] In the figure: 1. Outer shell; 2. Rotor; 3. Stator; 4. Right end cover; 5. Left end cover; 6. Sealing ring; 7. Rotating shaft; 8. Bearing cover; 9. Lubricating oil filling mechanism; 10. Junction box; 11. Axial flow fan; 12. Carbon tube; 91. Oil filling pipe; 92. Sealing cover; 93. Filter cover; 94. Inclined plane frame; 95. Fixed plate; 96. Connecting rod; 97. Arc column; 98. Spring; 99. Sealing ring. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figure 1 and Figure 2 , a high-efficiency explosion-proof motor for preventing leakage of flammable and explosive gases, including an outer shell 1, a rotor 2 is arranged inside the outer shell 1, a stator 3 is fixedly installed inside the outer shell 1, a right end cover 4 is installed at the right end of the outer shell 1 through bolts, a left end cover 5 is fixedly connected to the left end of the outer shell 1, a carbon tube 12 is arranged outside the rotor 2, a rotating shaft 7 is fixedly connected inside the rotor 2, two symmetrically distributed sealing rings 6 are fixedly connected inside the outer shell 1, a junction box 10 is fixedly connected to the upper end of the outer shell 1, an axial flow fan 11 is fixedly installed at the right end of the outer shell 1, and a lubricating oil filling mechanism 9 is arranged on the outer shell 1.

[0021] Please refer to Figure 1 and Figure 2 , the sealing ring 6 located at the left end of the outer shell 1 is in contact with the left end cover 5, the sealing ring 6 located at the right end of the outer shell 1 is in contact with the right end cover 4, the input end of the axial flow fan 11 is slidably connected to the rotating shaft 7, the axial flow fan 11 can dissipate heat from the outer shell 1 through air flow, a bearing cover 8 is fixedly connected inside the left end cover 5, the bearing cover 8 is rotatably connected to the rotating shaft 7, the rotating shaft 7 is connected to the left end cover 5 and the right end cover 4 through bearings, and the bearing cover 8 can seal the connection between the rotating shaft 7 and the left end cover 5.

[0022] Please refer to Figure 1 and Figure 3 and Figure 4 and Figure 5, the lubricating oil filling mechanism 9 includes an oil filling pipe 91. The oil filling pipe 91 is fixedly connected inside the housing 1. A sealing cap 92 is threadedly connected inside the pipe orifice of the oil filling pipe 91. A filter cover 93 is slidably connected inside the oil filling pipe 91. An inclined plane frame 94 is fixedly connected to the upper end of the filter cover 93. A fixing plate 95 is fixedly connected to the lower end of the inclined plane frame 94. A connecting rod 96 is slidably connected inside the fixing plate 95. One end of the connecting rod 96 away from the fixing plate 95 is fixedly connected to an arc column 97. A spring 98 is arranged outside the connecting rod 96. The upper part of the inner wall of the oil filling pipe 91 is fixedly connected to a sealing ring 99. The arc column 97 can limit the position of the filter cover 93. The inclined plane frame 94 contacts the sealing cap 92. The inclined plane frame 94 is slidably connected to the oil filling pipe 91. The sealing ring 99 is slidably connected to the filter cover 93. The arc column 97 is slidably connected to the inclined plane frame 94. The sealing ring 99 can increase the sealing performance between the filter cover 93 and the oil filling pipe 91. One end of the spring 98 is fixedly connected to the fixing plate 95, and the other end of the spring 98 is fixedly connected to the arc column 97. The arc column 97 is clamped to the oil filling pipe 91. The spring 98 can drive the arc column 97 to automatically reset through elastic force.

[0023] The specific implementation process of the present utility model is as follows: When in use, during the rotation of the rotor 2 inside the housing 1, the carbon tube 12 is driven to rotate. When explosive gas enters the inside of the housing 1, under the action of the airflow drive, the centrifugal force generated by the carbon tube 12 throws the airflow out of the inside of the housing 1, which can effectively avoid gas explosion;

[0024] When it is necessary to add lubricating oil, the filter cover 93 is slid into the inside of the oil filling pipe 91. During the sliding process, the oil filling pipe 91 pushes the arc column 97 to move and compresses the spring 98. When the arc column 97 contacts the hole of the oil filling pipe 91, the spring 98 resets. The spring 98 can drive the arc column 97 to be clamped into the inside of the oil filling pipe 91 through elastic force, so that the filter cover 93 can be placed more stably. Then, the lubricating oil can be filtered through the filter cover 93 and added to the inside of the housing 1.

[0025] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency explosion-proof motor for preventing leakage of flammable and explosive gases, comprising a housing (1), characterized in that: A rotor (2) is arranged inside the housing (1), a stator (3) is fixedly installed inside the housing (1), a right end cover (4) is installed on the right end of the housing (1) by bolts, a left end cover (5) is fixedly connected to the left end of the housing (1), a carbon tube (12) is arranged on the outside of the rotor (2), a rotating shaft (7) is fixedly connected to the inside of the rotor (2), two symmetrically distributed sealing rings (6) are fixedly connected to the inside of the housing (1), a terminal box (10) is fixedly connected to the upper end of the housing (1), an axial flow fan (11) is fixedly installed on the right end of the housing (1), and a lubricating oil filling mechanism (9) is arranged on the housing (1).

2. A high-efficiency explosion-proof motor for preventing leakage of flammable and explosive gases according to claim 1, characterized in that: The sealing ring (6) located at the left end of the housing (1) contacts the left end cover (5), the sealing ring (6) located at the right end of the housing (1) contacts the right end cover (4), and the input end of the axial flow fan (11) is slidably connected to the rotating shaft (7).

3. A high-efficiency explosion-proof motor for preventing leakage of flammable and explosive gases according to claim 1, characterized in that: A bearing cover (8) is fixedly connected to the interior of the left end cover (5), and the bearing cover (8) is rotatably connected to the rotating shaft (7). The rotating shaft (7) is connected to the left end cover (5) and the right end cover (4) via bearings.

4. A high-efficiency explosion-proof motor for preventing leakage of flammable and explosive gases according to claim 1, characterized in that: The lubricating oil filling mechanism (9) comprises a filling pipe (91), the inside of the housing (1) is fixedly connected with the filling pipe (91), the inside of the pipe mouth of the filling pipe (91) is connected with a sealing cover (92) through a thread, the inside of the filling pipe (91) is slidably connected with a filter cover (93), the upper end of the filter cover (93) is fixedly connected with a bevel frame (94), the lower end of the bevel frame (94) is fixedly connected with a fixing plate (95), the inside of the fixing plate (95) is slidably connected with a connecting rod (96), the end of the connecting rod (96) away from the fixing plate (95) is fixedly connected with an arc column (97), the outer side of the connecting rod (96) is provided with a spring (98), and the upper part of the inner wall of the filling pipe (91) is fixedly connected with a sealing ring (99).

5. A high-efficiency explosion-proof motor for preventing leakage of flammable and explosive gases according to claim 4, characterized in that: The inclined surface frame (94) contacts the sealing cover (92), the inclined surface frame (94) is slidably connected to the filling pipe (91), the sealing ring (99) is slidably connected to the filter cover (93), and the arc column (97) is slidably connected to the inclined surface frame (94).

6. A high-efficiency explosion-proof motor for preventing leakage of flammable and explosive gases according to claim 4, characterized in that: One end of the spring (98) is fixedly connected to the fixing plate (95), the other end of the spring (98) is fixedly connected to the circular arc column (97), and the circular arc column (97) is clamped to the refueling pipe (91).

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