Explosion-proof motor with sealing protection structure

Abstract

The utility model discloses an explosion-proof motor with a sealing protection structure, which comprises a shell middle section, a sealing assembly and a heat dissipation assembly, and is characterized in that the right side of the shell middle section is fixedly provided with the sealing assembly through a bolt, and the sealing assembly comprises a sealing ring, a threaded through hole, a fixing ring and a sealing disc; two sets of sealing rings are fixed to the right end of the outer side of the shell middle section, a plurality of sets of threaded through holes are fixed between the two sets of sealing rings, the fixing ring is fixed to the inner side of the shell middle section, the right side of the fixing ring is in threaded connection with a sealing disc, and the heat dissipation assembly is located on the left side of the shell middle section. And the heat dissipation assembly comprises a shell rear section, a limiting ring, a water pipe and a heat conduction disc, and the left side of the shell middle section is in bolted connection with the shell rear section. The sealing performance in the motor can be improved, and water molecules and dust in external air are prevented from entering the motor through gaps of the shell, so that sudden explosion of the motor during operation is avoided, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof motors, in particular to an explosion-proof motor with a sealing protection structure. Background Art

[0002] An explosion-proof motor is a motor that can be used in flammable and explosive places. It does not generate sparks during operation. It is mainly used in coal mines, oil and gas, petrochemicals and chemical industries. In addition, it is also widely used in metallurgy, urban gas, transportation, grain and oil processing, papermaking and other departments. For example, the patent document with application number CN202311754418.7 discloses an explosion-proof motor. Through the setting of several oil nozzles, lubricating oil can be evenly injected into the inner cavity of the first bearing, thereby achieving the purpose of oiling and maintaining the first bearing and avoiding damage to the explosion-proof motor.

[0003] However, similar schemes mentioned above have poor sealing inside the motor, which allows water molecules and dust in the outside air to enter the motor through the gaps in the outer casing. Since the temperature inside the running motor is high, the motor may suddenly explode, posing a safety hazard. In addition, the motor only dissipates heat through the rear fan, which results in slow heat dissipation. The temperature accumulation can easily reach the ignition point of flammable and explosive items.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and an explosion-proof motor with a sealed protective structure is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an explosion-proof motor with a sealed protective structure, which solves the problem that the similar scheme proposed in the above-mentioned background technology has poor internal sealing of the motor, so that water molecules and dust in the outside air enter the motor through the gaps in the outer shell. Since the internal temperature of the running motor is high, the motor may suddenly explode, causing a safety hazard. In addition, the motor only dissipates heat through the rear fan, which results in slow heat dissipation and the temperature accumulation may easily reach the ignition point of flammable and explosive items.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an explosion-proof motor with a sealing protection structure, comprising a middle section of the shell, a sealing assembly and a heat dissipation assembly, the sealing assembly is fixed with bolts on the right side of the middle section of the shell, and the sealing assembly comprises a sealing ring, a threaded through hole, a fixing ring and a sealing disk, two groups of the sealing rings are fixed to the right end of the outer side of the middle section of the shell, and several groups of the threaded through holes are fixed between the two groups of the sealing rings, and the fixing ring is fixed to the inner side of the middle section of the shell, the right side of the fixing ring is threadedly connected with the sealing disk, and the heat dissipation assembly is located on the left side of the middle section of the shell, and the heat dissipation assembly comprises a rear section of the shell, a limiting ring, a water pipe and a heat conduction disk, the left side of the middle section of the shell is bolted with the rear section of the shell, and the limiting ring is welded on the right side of the rear section of the shell, and the water pipe is coiled on the inner side of the limiting ring, and the heat conduction disk is fixed to the side of the water pipe away from the rear section of the shell.

[0007] Furthermore, the right side of the middle section of the outer shell is bolted to the front section of the outer shell, and the diameters of the front section of the outer shell and the rear section of the outer shell are both larger than the diameter of the middle section of the outer shell.

[0008] Furthermore, an output shaft is provided through the center of the inner side of the front section of the housing, and a left side bearing of the output shaft is connected to the body.

[0009] Furthermore, a threaded protrusion is fixed on the right side of the fixing ring, and the fixing ring and the sealing disk form a disassembly structure through the threaded protrusion.

[0010] Furthermore, two groups of grooves are fixed on the outer side of the sealing ring, and the rear section of the housing is connected by bolts to form a disassembly structure.

[0011] Furthermore, through holes are provided on both upper and lower sides of the rear section of the shell, and the heat conducting plate is a metal copper plate.

[0012] The utility model provides an explosion-proof motor with a sealed protective structure, which has the following beneficial effects:

[0013] It can improve the sealing inside the motor, prevent water molecules and dust in the outside air from entering the motor through the gaps in the outer shell, thereby preventing the motor from suddenly exploding during operation and reducing safety hazards. In addition, it can increase the heat dissipation speed inside the motor, prevent the internal temperature from exceeding the ignition point of flammable and explosive items, and help to increase the service life of the motor. The specific contents are as follows:

[0014] The sealing disk is screwed onto the outside of the fixing ring through threads, and the front section of the housing is installed on the outside of the middle section of the housing. At this time, external dust and water molecules are blocked by the double-layer sealing ring, and even if dust enters, it can be further blocked by the sealing disk, which can prevent dust from interfering with the rotation of the output shaft and stator. The outside of the water pipe is connected to the coolant pool, and the coolant flowing inside the water pipe can take away the heat on the heat transfer disk, thereby quickly reducing the temperature inside the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of an explosion-proof motor with a sealing protection structure according to the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of an explosion-proof motor with a sealing protection structure according to the utility model;

[0017] Figure 3 This is a schematic diagram of the heat dissipation component structure of an explosion-proof motor with a sealed protective structure according to the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the sealing component structure of an explosion-proof motor with a sealing protection structure.

[0019] In the figure: 1. middle section of the shell; 2. front section of the shell; 3. output shaft; 4. sealing assembly; 401. sealing ring; 402. threaded through hole; 403. fixing ring; 404. sealing disk; 411. groove; 431. threaded protrusion; 5. body; 6. heat dissipation assembly; 601. rear section of the shell; 602. limiting ring; 603. water pipe; 604. heat conducting disk; 7. through hole. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figures 1 to 4As shown, an explosion-proof motor with a sealing protection structure includes a middle section 1 of the shell, a sealing component 4 and a heat dissipation component 6, the sealing component 4 is fixed to the right side of the middle section 1 of the shell with bolts, the right side of the middle section 1 of the shell is connected to the front section 2 of the shell, and the diameters of the front section 2 of the shell and the rear section 601 of the shell are larger than the diameter of the middle section 1 of the shell, so that the shells at the front and rear ends can cover the middle section 1 of the shell, and dust can be prevented from directly entering the motor after passing through the connection gap, thereby improving the sealing of the shell connection, an output shaft 3 is provided through the center of the inner side of the front section 2 of the shell, and the left side bearing of the output shaft 3 is connected to the body 5, and the output shaft 3 is driven to rotate by the body 5 to form the driving part of the motor, and the sealing component 4 includes a sealing ring 401, a threaded through hole 402, a fixing ring 403 and a sealing disk 404, two groups of sealing rings 401 are fixed to the right end of the outer side of the middle section 1 of the shell, and two groups of grooves 411 are fixed to the outer side of the sealing ring 401, and the grooves 411 are used to limit the sealing ring 401 The position of the sealing ring 401 is prevented from changing after the motor is used for a long time, and the sealing performance of the device can be improved by two sets of sealing rings, and a plurality of sets of threaded through holes 402 are fixed between the two sets of sealing rings 401 for installing bolts, and the front section 2 of the housing and the middle section 1 of the housing are fixed by bolts, so as to facilitate installation, and a fixing ring 403 is fixed on the inner side of the middle section 1 of the housing, and a threaded protrusion 431 is fixed on the right side of the fixing ring 403, because the right side of the fixing ring 403 is threadedly connected with a sealing disk 404, a gap is formed between the sealing disk 404 and the front section 2 of the housing, so that dust and water vapor passing through the sealing rings 401 on both sides are locked in the gap, which can further improve the sealing performance inside the motor, thereby avoiding sudden explosion of the motor during operation and reducing safety hazards, because the fixing ring 403 and the sealing disk 404 form a disassembly structure through the threaded protrusion 431, the threaded connection is tightly connected, the sealing performance is improved, and the installation of the sealing disk 404 is convenient.

[0022] The heat dissipation component 6 is located on the left side of the middle section 1 of the shell, and the heat dissipation component 6 includes a rear section 601 of the shell, a limiting ring 602, a water pipe 603 and a heat conducting plate 604. The left side of the middle section 1 of the shell is bolted to the rear section 601 of the shell, and the rear section 601 of the shell is connected by bolts to form a disassembly structure. When the internal temperature is high, the rear cover can be quickly disassembled for careful internal inspection and heat dissipation. A limiting ring 602 is welded on the right side of the rear section 601 of the shell, and a water pipe 603 is spirally arranged on the inner side of the limiting ring 602, which can increase the contact area between the water pipe 603 and the heat conducting plate 604. The rear section 601 of the shell is penetrated on both sides. A through hole 7 is provided, and a water pipe 603 passes through the through hole 7 to be connected to an external water source, which can quickly exchange water with a large amount of heat with external cold water, thereby improving the heat dissipation speed. A heat-conducting plate 604 is fixed to the side of the water pipe 603 away from the rear section 601 of the shell, and the heat-conducting plate 604 is a metal copper plate. The metal copper plate has good thermal conductivity and can gather the high temperature inside the motor on the heat-conducting plate 604, and convert heat with the coolant in the water pipe 603, thereby improving the heat dissipation speed inside the motor, preventing the internal temperature from exceeding the ignition point of flammable and explosive items, and helping to improve the service life of the motor.

[0023] In summary, when this explosion-proof motor with a sealing protection structure is used, first, during installation, the sealing disk 404 is passed through the output shaft 3, and the threaded side is tightened on the outside of the fixing ring 403, and then the sealing ring 401 is sleeved on the groove 411, and the two ends of the water pipe 603 are respectively connected to the external cooling device, and the front section 2 of the shell and the rear section 601 of the shell are fixed by tightening the bolts, and the body 5 drives the output shaft 3 to rotate, so that the temperature inside the shell rises rapidly, and the heat conducting disk 604 and the high temperature inside the motor are converted into temperature, and the external coolant enters the inside of the motor through the water pipe 603, absorbs the temperature of the heat conducting disk 604 and is then discharged from the lower end outlet, which can quickly reduce the temperature inside the motor, and at the same time, the external dust and water molecules are blocked on the outside by the two sets of sealing rings 401. If they pass through the sealing ring 401 and enter the inside of the front section 2 of the shell, they are blocked by the sealing disk 404, so that they stay between the sealing disk 404 and the front section 2 of the shell, thereby further improving the sealing inside the motor.

Claims

1. An explosion-proof motor with a sealed protective structure, comprising a housing middle section (1), a sealing component (4) and a heat dissipation component (6), characterized in that: The sealing assembly (4) is fixed to the right side of the middle section (1) of the housing by bolts, and the sealing assembly (4) comprises a sealing ring (401), a threaded through hole (402), a fixing ring (403) and a sealing disk (404); two groups of the sealing rings (401) are fixed to the right end of the outer side of the middle section (1) of the housing, and a plurality of groups of the threaded through holes (402) are fixed between the two groups of the sealing rings (401); the fixing ring (403) is fixed to the inner side of the middle section (1) of the housing, and the sealing disk (404) is threadedly connected to the right side of the fixing ring (403); and The heat dissipation component (6) is located on the left side of the middle section (1) of the outer shell, and the heat dissipation component (6) comprises a rear section (601) of the outer shell, a limiting ring (602), a water pipe (603) and a heat conduction plate (604); the rear section (601) of the outer shell is bolted to the left side of the middle section (1) of the outer shell, and the limiting ring (602) is welded to the right side of the rear section (601) of the outer shell, and the water pipe (603) is coiled on the inner side of the limiting ring (602), and the heat conduction plate (604) is fixed to the side of the water pipe (603) away from the rear section (601) of the outer shell.

2. The explosion-proof motor with a sealed protective structure according to claim 1, characterized in that: The right side of the middle section (1) of the outer shell is bolted to the front section (2) of the outer shell, and the diameters of the front section (2) and the rear section (601) of the outer shell are both larger than the diameter of the middle section (1) of the outer shell.

3. The explosion-proof motor with a sealed protective structure according to claim 2, characterized in that: An output shaft (3) is provided through the center of the inner side of the front section (2) of the housing, and the left side bearing of the output shaft (3) is connected to the body (5).

4. The explosion-proof motor with a sealed protective structure according to claim 1, characterized in that: A threaded protrusion (431) is fixed on the right side of the fixing ring (403), and the fixing ring (403) forms a disassembly structure with the sealing disk (404) through the threaded protrusion (431).

5. The explosion-proof motor with a sealed protective structure according to claim 1, characterized in that: Two groups of grooves (411) are fixed on the outer side of the sealing ring (401), and the rear section (601) of the housing is connected by bolts to form a disassembly structure.

6. The explosion-proof motor with a sealed protective structure according to claim 5, characterized in that: Through holes (7) are provided on both upper and lower sides of the rear section (601) of the housing, and the heat conducting plate (604) is a metal copper plate.

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