Explosion-proof safety motor

Abstract

The utility model provides an anti -explosion safety type motor belongs to motor field, including shell, motor stator, motor rotor and pivot, motor stator, motor rotor and pivot are in order to be installed in the inside of shell, the one side of shell is provided with the heat dissipation explosion -proof mechanism for conducting and discharging heat, the one side of shell is provided with the wire harness assembly that separates the cable of shell inside. The utility model discloses the heat dissipation explosion -proof mechanism that sets up, realized the effect that the heat that produced in the inside of shell is conducted and blows away, when using, motor stator generates magnetic force, and then produces rotating magnetic field, makes motor rotor and pivot rotate, and the one end of the pivot at the front end cover when rotating can drive external equipment to rotate, and the one end at the rear end cover will drive the rotation of the fan blade, and the heat in the inside of shell is blown out of the shell through the dust cover, reduces the heat in the inside of shell, prevents the heat combustion.

Description

Technical Field

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

[0002] Explosion-proof motors are a type of motor that can be used in flammable and explosive environments. They do not produce electrical sparks during operation. Explosion-proof motors are mainly used in coal mines, oil and gas, petrochemical and chemical industries. In addition, they are also widely used in textiles, metallurgy, urban gas, transportation, grain and oil processing, papermaking, and pharmaceuticals. As a major power equipment, explosion-proof motors are usually used to drive pumps, fans, compressors and other transmission machinery.

[0003] A search revealed that Chinese patent CN213693309U discloses "an explosion-proof motor, comprising a self-cooling explosion-proof housing, a front cover at one end of the housing, a middle cover at the other end, and a rear cover outside the middle cover; a motor shaft is disposed inside the self-cooling explosion-proof housing, one end of the motor shaft is connected to the front cover of the housing, and the other end is connected to the middle cover of the housing; an explosion-proof joint surface and an oil seal are provided between the front cover of the housing and the motor shaft; a motor rotor and a motor stator are sequentially mounted on the motor shaft; a sealed connection is achieved through the explosion-proof joint surface between the self-cooling explosion-proof housing and the front cover, middle cover, and rear cover of the housing, the oil seal, and the explosion-proof joint surface between the motor shaft and the front cover, middle cover, and rear cover of the housing; this utility model motor has good operating stability, high precision, low heat generation, and obvious advantages such as good sealing performance and excellent explosion-proof performance." However, the following defects still exist:

[0004] Although the device seals the casing with its front and rear covers, it lacks the ability to conduct and dissipate heat generated inside. After prolonged use, the heat inside the casing cannot escape through these covers, leading to a buildup of heat and posing a safety hazard. Therefore, an explosion-proof safety motor is proposed. Utility Model Content

[0005] The purpose of this utility model is to address the current situation where, although the front and rear covers of the casing are sealed, they lack the effect of conducting and dissipating the heat generated inside the casing. After prolonged use, the heat inside the casing cannot be discharged through the front and rear covers, resulting in a large amount of heat accumulating inside the casing and potentially causing safety hazards.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] The present invention is as follows: an explosion-proof safety motor, comprising a housing, a motor stator, a motor rotor, and a shaft, wherein the motor stator, motor rotor, and shaft are sequentially fitted inside the housing, and a heat dissipation explosion-proof mechanism for conducting and dissipating heat is provided on one side of the housing, and a cable bundle assembly for separating the cables inside the housing is provided on one side of the housing.

[0008] The heat dissipation and explosion-proof mechanism includes a front cover and a rear cover that are respectively bolted to the openings on both sides of the outer shell. Both ends of the rotating shaft are provided with double-sided sealed bearings. Multiple heat-conducting fins are fixedly connected inside the rear cover. A fan blade is provided at one end of the rotating shaft that extends to the outside of the rear cover. A dust cover is bolted to the side of the outer shell near the fan blade, and the fan blade is located inside the dust cover.

[0009] As a preferred technical solution of this utility model, the wire harness assembly includes a wire harness frame fixedly connected to the outer wall of the housing. The wire harness frame has multiple through holes. The wire harness frame communicates with the inside of the housing through the through holes. Multiple sealing rings are snapped into the through holes on one side of the wire harness frame. A cap is bolted to the top of the wire harness frame. A wire outlet tube is connected to one side of the wire harness frame.

[0010] As a preferred technical solution of this utility model, the outer wall of the shell is fixedly connected to two L-shaped fixing brackets, and one side of each of the two L-shaped fixing brackets is fixedly connected to multiple reinforcing ribs, and the interior of each of the two L-shaped fixing brackets has two threaded holes.

[0011] As a preferred technical solution of this utility model, a sealing sleeve is snapped onto the end of the cable outlet tube away from the cable tie frame, and a sealing ring is provided at the bottom of the cap, the sealing ring being located inside the cable tie frame.

[0012] As a preferred technical solution of this utility model, an extension rod is fixedly connected to the top of the outer shell, and a lifting ring is fixedly connected to the top of the extension rod.

[0013] As a preferred technical solution of this utility model, the outer wall of the shell is provided with a plurality of heat dissipation fins, and the plurality of heat dissipation fins are circumferentially distributed along the central axis of the shell.

[0014] As a preferred technical solution of this utility model, the dust cover is attached to the side away from the fan blade with an interception net to block external dust.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. Through the heat dissipation and explosion-proof mechanism, the heat generated inside the casing is conducted and dissipated. During use, the motor stator generates magnetic force, which in turn generates a rotating magnetic field, causing the motor rotor and shaft to rotate. When the shaft rotates, one end located at the front cover can drive the external equipment to rotate, while the other end located at the rear cover drives the fan blades to rotate, blowing the heat inside the casing out through the dust cover, reducing the heat inside the casing and preventing overheating and combustion.

[0017] 2. The cable management assembly effectively separates and bundles the cables inside the housing. The cable pass-through holes allow the cables inside the housing to pass through the cable management frame, preventing the cable terminals from being located inside the housing and preventing sparks and explosions at the cable terminals during use in harsh environments. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the explosion-proof safety motor provided by this utility model;

[0019] Figure 2 This is a front view of the explosion-proof safety motor provided by this utility model;

[0020] Figure 3 The explosion-proof safety motor provided by this utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0021] Figure 4 A right-side cross-sectional view of the explosion-proof safety motor provided by this utility model;

[0022] Figure 5 The explosion-proof safety motor provided by this utility model Figure 4 Enlarged view of point A in the middle.

[0023] The diagram shows: 1. Outer casing; 2. Motor stator; 3. Motor rotor; 4. Shaft; 5. Heat dissipation and explosion-proof mechanism; 6. Cable harness assembly; 501. Front cover; 502. Rear cover; 503. Double-sided sealed bearing; 504. Heat-conducting plate; 505. Fan blade; 506. Dust cover; 601. Cable harness holder; 602. Cable threading hole; 603. Sealing ring; 604. Cap; 605. Cable outlet tube; 7. L-shaped fixing bracket; 8. Reinforcing rib; 9. Threaded hole; 10. Sealing sleeve; 11. Sealing ring; 12. Extension rod; 13. Lifting ring; 14. Heat dissipation fins; 15. Interception net. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] like Figure 1 and Figure 3 As shown, this embodiment proposes an explosion-proof safety motor, including a housing 1, a motor stator 2, a motor rotor 3 and a shaft 4. The motor stator 2, the motor rotor 3 and the shaft 4 are sequentially fitted inside the housing 1. A heat dissipation explosion-proof mechanism 5 for conducting and dissipating heat is provided on one side of the housing 1. A cable bundle assembly 6 for separating the cables inside the housing 1 is provided on one side of the housing 1.

[0029] like Figure 3As shown, the heat dissipation and explosion-proof mechanism 5 includes a front cover 501 and a rear cover 502 that are respectively bolted to the openings on both sides of the outer shell 1. The front cover 501 and the rear cover 502 are both encapsulated with epoxy resin to the outer shell 1. Both ends of the rotating shaft 4 are provided with double-sided sealed bearings 503. The outer rings of the two double-sided sealed bearings 503 are respectively fixedly connected to the inner walls of the front cover 501 and the rear cover 502. The sealing bearings can increase the sealing between the rotating shaft 4 and the front cover 501 and the rear cover 502. Multiple heat-conducting plates 504 are fixedly connected inside the rear cover 502. A fan blade 505 is provided at one end of the rotating shaft 4 that extends to the outside of the rear cover 502. The heat-conducting plates 504 can quickly absorb the heat generated inside the outer shell 1 and discharge the heat from the outer shell 1 through the fan blade 505. A dust cover 506 is bolted to the side of the outer shell 1 near the fan blade 505. The fan blade 505 is located inside the dust cover 506. During use, the motor stator 2 is energized to generate a rotating magnetic field, causing the electronic rotor and shaft 4 to rotate. When the shaft 4 rotates, one end located at the front cover 501 can drive the external equipment to rotate, and the other end located at the rear cover 502 will drive the fan blades 505 to rotate. The heat inside the housing 1 is blown out of the housing 1 through the dust cover 506, reducing the heat inside the housing 1 and preventing overheating. The front cover 501 and rear cover 502, which are encapsulated with epoxy resin, can improve the sealing performance of the housing 1 and prevent flammable and explosive gases from entering the housing 1 when used in harsh environments. At the same time, the double-sided sealed bearing 503 is existing technology, which has sealing devices on both sides, which can improve the sealing performance between the shaft 4 and the front cover 501 and the rear cover 502 without affecting the normal rotation of the shaft 4.

[0030] like Figure 3 and Figure 4 As shown, the cable harness assembly 6 includes a cable harness frame 601 fixedly connected to the outer wall of the housing 1. Multiple through holes 602 are provided inside the cable harness frame 601, communicating with the interior of the housing 1 through these holes. Multiple sealing rings 603 are engaged with the through holes 602 on one side of the cable harness frame 601. A cap 604 is bolted to the top of the cable harness frame 601, and a cable outlet tube 605 is connected to one side of the cable harness frame 601. The cables of the motor stator 2 are placed in the cable harness frame 601 through the through holes 602, while external cables enter the cable harness frame 601 through the cable outlet tube 605. This places the terminals of the motor stator 2 cables and external cables within the cable harness frame 601. The sealing rings 603 and the cap 604 work together to seal the cable harness frame 601, preventing sparks and explosions at the cable terminals during use in harsh environments.

[0031] like Figure 1As shown, two L-shaped fixing brackets 7 are fixedly connected to the outer wall of the outer casing 1. Multiple reinforcing ribs 8 are fixedly connected to one side of each L-shaped fixing bracket 7. Two threaded holes 9 are opened through the interior of each L-shaped fixing bracket 7. The outer casing 1 can be placed on the ground through the L-shaped fixing brackets 7 and the reinforcing ribs 8, and the outer casing 1 can be easily fixed in a designated position through the threaded holes 9.

[0032] like Figure 4 and Figure 5 As shown, a sealing sleeve 10 is snapped onto the end of the cable outlet tube 605 away from the cable tie 601, and a sealing ring 11 is provided at the bottom of the cap 604, with the sealing ring 11 located inside the cable tie 601. The sealing sleeve 10 and the sealing ring 11 work together to further improve the sealing effect of the cable tie 601 and reduce safety hazards.

[0033] like Figure 3 As shown, an extension rod 12 is fixedly connected to the top of the outer casing 1, and a lifting ring 13 is fixedly connected to the top of the extension rod 12. The extension rod 12 and the lifting ring 13 facilitate the lifting and movement of the outer casing 1.

[0034] like Figure 1 As shown, the outer wall of the outer casing 1 is provided with multiple heat dissipation fins 14, which are circumferentially distributed along the central axis of the outer casing 1. The heat dissipation fins 14 facilitate the conduction of heat from the inside of the outer casing 1 to the outside.

[0035] like Figure 3 As shown, a dust cover 506 has an intercepting net 15 attached to the side away from the fan blade 505 to block external dust. The intercepting net 15 can block external dust and prevent it from affecting the use of the fan blade 505.

[0036] Specifically, when using this explosion-proof safety motor: the cable of the motor stator 2 is placed in the cable tie 601 through the wire hole 602, while the external cable enters the cable tie 601 through the outlet pipe 605, so that the terminals of the motor stator 2 cable and the external cable are placed in the cable tie 601. The cable tie 601 is sealed by the cooperation of the sealing ring 603, the sealing sleeve 10, the sealing ring 11, and the cap 604. Figure 3 , Figure 4 and Figure 5(As shown); When the motor stator 2 is energized, it generates a rotating magnetic field, causing the electronic rotor and shaft 4 to rotate. When the shaft 4 rotates, one end located at the front cover 501 can drive external equipment to rotate, and the other end located at the rear cover 502 drives the fan blades 505 to rotate. This blows heat from inside the housing 1 out through the dust cover 506, working in conjunction with the heat dissipation fins 14 to reduce heat inside the housing 1 and prevent overheating. The epoxy resin encapsulation of the front cover 501 and rear cover 502 improves the sealing of the housing 1, preventing flammable and explosive gases from entering the housing 1 in harsh environments (such as...). Figure 3 (as shown); Meanwhile, the double-sided sealed bearing 503 can improve the sealing performance between the rotating shaft 4 and the front cover 501 and the rear cover 502 without affecting the normal rotation of the rotating shaft 4 (as shown). Figure 3 (As shown); the outer casing 1 can be placed on the ground via the L-shaped fixing bracket 7 and the reinforcing rib 8, while the outer casing 1 can be easily fixed in a designated position via the threaded hole 9 (e.g., Figure 1 (As shown).

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An explosion-proof safety motor, comprising a housing (1), a motor stator (2), a motor rotor (3), and a shaft (4), characterized in that, The motor stator (2), motor rotor (3) and shaft (4) are sequentially fitted inside the housing (1). A heat dissipation and explosion-proof mechanism (5) for conducting and dissipating heat is provided on one side of the housing (1). A cable bundle assembly (6) for separating the cables inside the housing (1) is provided on one side of the housing (1). The heat dissipation and explosion-proof mechanism (5) includes a front cover (501) and a rear cover (502) that are respectively bolted to the openings on both sides of the outer shell (1). Both ends of the rotating shaft (4) are provided with double-sided sealed bearings (503). Multiple heat-conducting plates (504) are fixedly connected inside the rear cover (502). A fan blade (505) is provided at one end of the rotating shaft (4) extending to the outside of the rear cover (502). A dust cover (506) is bolted to the side of the outer shell (1) near the fan blade (505). The fan blade (505) is located inside the dust cover (506).

2. The explosion-proof safety motor according to claim 1, characterized in that, The cable harness assembly (6) includes a cable harness frame (601) fixedly connected to the outer wall of the housing (1). The cable harness frame (601) has multiple through holes (602) through it. The cable harness frame (601) communicates with the interior of the housing (1) through the through holes (602). Multiple sealing rings (603) are snapped into the through holes (602) on one side of the cable harness frame (601). A cap (604) is bolted to the top of the cable harness frame (601). A cable outlet tube (605) is connected to one side of the cable harness frame (601).

3. The explosion-proof safety motor according to claim 1, characterized in that, The outer wall of the outer shell (1) is fixedly connected to two L-shaped fixing brackets (7), and one side of each of the two L-shaped fixing brackets (7) is fixedly connected to multiple reinforcing ribs (8). The interior of each of the two L-shaped fixing brackets (7) has two threaded holes (9).

4. The explosion-proof safety motor according to claim 2, characterized in that, The end of the cable outlet tube (605) away from the cable tie frame (601) is fitted with a sealing sleeve (10), and a sealing ring (11) is provided at the bottom of the cap (604), the sealing ring (11) being located inside the cable tie frame (601).

5. The explosion-proof safety motor according to claim 1, characterized in that, An extension rod (12) is fixedly connected to the top of the outer casing (1), and a lifting ring (13) is fixedly connected to the top of the extension rod (12).

6. The explosion-proof safety motor according to claim 1, characterized in that, The outer wall of the outer shell (1) is provided with a plurality of heat dissipation fins (14), and the plurality of heat dissipation fins (14) are circumferentially distributed along the central axis of the outer shell (1).

7. The explosion-proof safety motor according to claim 1, characterized in that, The dust cover (506) has an interception net (15) attached to the side away from the fan blade (505) to block external dust.

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