Speed reduction motor with explosion-proof structure

Abstract

The utility model discloses a speed reduction motor with an explosion-proof structure, which comprises a base, an explosion-proof shell, a speed reduction motor body, a sealing sleeve and a shaft sleeve, the explosion-proof shell is fixed at the top end of the base, a round hole is arranged on the outer wall of one side of the explosion-proof shell, a bearing is arranged in the round hole, and the shaft sleeve is arranged in the shaft sleeve. The sealing sleeve is fixed on the outer wall of the explosion-proof shell at the position of the round hole, the shaft sleeve is arranged on one side of the sealing sleeve, the shaft sleeve and the sealing sleeve are tightly nested, a cold water cavity is formed in the side wall of the explosion-proof shell, the gear motor body is installed in the explosion-proof shell, and a rotating shaft is installed at one end of the gear motor body; one end of the rotating shaft sequentially penetrates through the bearing, the sealing sleeve and the shaft sleeve, a water tank is arranged on one side of the base, and a first cavity and a second cavity are formed in the water tank. The explosion-proof LED lamp not only has an explosion-proof function and is good in sealing performance, but also is good in heat dissipation effect.

Description

Technical Field

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

[0002] A reduction motor is a power device that converts the mechanical energy generated by the rotation of a high-speed motor, reduces the speed through a reduction device, and outputs the required torque. It consists of two major parts: an electric motor and a reduction gear. The electric motor converts electrical energy into mechanical energy, and the reduction gear converts the high-speed rotation output of the motor into a low-speed, high-torque output through the reduction gear. Reduction motors are widely used in industrial equipment, such as printing machines, textile machines, packaging machines, machine tools, etc.

[0003] Since the working principle of the reduction motor will cause sparks, in some special industrial fields, such as chemical and pharmaceutical fields, flammable gases or explosive dusts may appear. Sparks have extremely high temperatures. Once they meet with flammable gases or explosive dusts, there will be a risk of explosion. However, in order to dissipate heat, the housing of the reduction motor is not sealed enough, especially at the shaft position. Flammable gases or explosive dusts can easily enter the interior of the housing, posing a high risk of explosion, and therefore improvement is urgently needed. Utility Model Content

[0004] The purpose of the utility model is to provide a reduction motor with a flameproof structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reduction motor with a flameproof structure, comprising a base, a flameproof shell, a reduction motor body, a sealing sleeve and a shaft sleeve, the flameproof shell is fixed at the top of the base, and a circular hole is provided on the outer wall of one side of the flameproof shell, and a bearing is installed inside the circular hole, the sealing sleeve is fixed on the outer wall of the flameproof shell at the position of the circular hole, the shaft sleeve is provided on one side of the sealing sleeve, and the shaft sleeve and the sealing sleeve are tightly nested, a cold water cavity is provided in the side wall of the flameproof shell, the reduction motor body is installed inside the flameproof shell, and a rotating shaft is installed at one end of the reduction motor body, and one end of the rotating shaft passes through the bearing, the sealing sleeve and the shaft sleeve in sequence, a water tank is provided on one side of the base, and a first cavity and a second cavity are respectively provided inside the water tank.

[0006] Preferably, heat sinks are fixed on the outer walls of the flameproof enclosure.

[0007] Preferably, a heat-conducting cover is mounted on the outside of the reduction motor body. The heat-conducting cover is an annular structure, and heat-conducting sheets with equal intervals are fixed on the outer wall of the heat-conducting cover to facilitate the heat dissipation of the reduction motor body.

[0008] Preferably, a circulation pipe is installed at the bottom end of the flameproof enclosure, one end of the circulation pipe is connected to the cold water cavity, and the other end of the circulation pipe is connected to the first cavity to facilitate the circulation of the coolant.

[0009] Preferably, semiconductor refrigeration sheets are installed on both outer walls of the water tank at the position of the first cavity, and heat dissipation fans are installed on the outer walls of the semiconductor refrigeration sheets to facilitate cooling of the coolant.

[0010] Preferably, a circulation pump is installed inside the second cavity, and a pumping pipe is installed at the input end of the circulation pump, the pumping pipe extends to the inside of the first cavity, and a water supply pipe is installed at the output end of the circulation pump, the water supply pipe is connected to the cold water cavity, and is used for pumping coolant.

[0011] Preferably, a sealing ring is adhered to the inner wall of the shaft sleeve, and the sealing ring fits tightly with the rotating shaft, thereby improving the sealing between the shaft sleeve and the rotating shaft.

[0012] Preferably, a through hole is provided on the outer wall of the shaft sleeve, and a bolt is provided inside the through hole for connecting the shaft sleeve and the rotating shaft.

[0013] Preferably, a threaded hole is provided on the outer wall of the rotating shaft at the position of the through hole, and the threaded hole cooperates with the bolt.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The flameproof enclosure is used to separate the reduction motor body that may generate sparks from the surrounding flammable gas or explosive dust. The rotating shaft extends from the circular hole and passes through the sealing sleeve and the shaft sleeve. The bolt is screwed into the corresponding threaded hole from the through hole to fix the shaft sleeve on the rotating shaft. The connection between the shaft sleeve and the rotating shaft is sealed by a sealing ring. When the rotating shaft rotates, the rotating shaft drives the shaft sleeve to rotate synchronously. The shaft sleeve rotates inside the sealing sleeve. The sealing sleeve and the shaft sleeve form a sealed nested structure to seal the circular hole, thereby ensuring the sealing of the flameproof enclosure, preventing flammable gas or explosive dust from entering the flameproof enclosure through the circular hole and contacting with sparks to cause explosion, thereby improving safety;

[0016] (2) When the reduction motor body is running, the heat-conducting cover transfers the heat generated by the reduction motor body to the outside through the heat-conducting sheet. The circulating pump inside the second cavity extracts the coolant in the first cavity through the pumping pipe and transports it into the cold water cavity through the water pipe. When the coolant flows inside the cold water cavity, the heat is taken away. The coolant flows back to the first cavity through the circulating pipe. The cold end of the semiconductor refrigeration plate contacts the first cavity to cool the coolant. The heat dissipation fan dissipates the heat from the hot end of the semiconductor refrigeration plate to ensure the heat absorption effect of the coolant. The heat dissipation effect of the reduction motor is good through water cooling, thereby reducing the temperature during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 3 This is a schematic diagram of the enlarged structure of the water tank of the utility model;

[0020] Figure 4 This is a schematic diagram of the side appearance structure of the water tank of the utility model;

[0021] Figure 5 It is a schematic diagram of an enlarged side view of the heat-conducting cover of the utility model.

[0022] In the figure: 1. base; 2. flameproof enclosure; 201. cold water chamber; 3. reduction motor body; 4. heat conductive cover; 5. heat conductive sheet; 6. water tank; 601. first cavity; 602. second cavity; 7. heat sink; 8. rotating shaft; 9. round hole; 10. bearing; 11. sealing sleeve; 12. bushing; 1201. sealing ring; 13. through hole; 14. bolt; 15. threaded hole; 16. circulation pump; 1601. water suction pipe; 1602. water delivery pipe; 17. circulation pipe; 18. semiconductor refrigeration sheet; 19. cooling fan. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0024] See also Figure 1-5 The utility model provides an embodiment: a reduction motor with a flameproof structure, comprising a base 1, a flameproof housing 2, a reduction motor body 3, a sealing sleeve 11 and a shaft sleeve 12, the flameproof housing 2 is fixed to the top of the base 1, and a circular hole 9 is provided on the outer wall of one side of the flameproof housing 2, and a bearing 10 is installed inside the circular hole 9, the sealing sleeve 11 is fixed on the outer wall of the flameproof housing 2 at the position of the circular hole 9, the shaft sleeve 12 is provided on one side of the sealing sleeve 11, the shaft sleeve 12 and the sealing sleeve 11 are closely nested, and a cold water chamber 201 is provided in the side wall of the flameproof housing 2;

[0025] The reduction motor body 3 is installed inside the flameproof housing 2, and a rotating shaft 8 is installed at one end of the reduction motor body 3, and one end of the rotating shaft 8 passes through a bearing 10, a sealing sleeve 11, and a shaft sleeve 12 in sequence;

[0026] Specifically, the flameproof housing 2 is used to separate the reduction motor body 3 that may generate sparks from the surrounding flammable gas or explosive dust, the rotating shaft 8 extends from the circular hole 9 and passes through the sealing sleeve 11 and the shaft sleeve 12, the bolt 14 is screwed into the corresponding threaded hole 15 from the through hole 13, and the shaft sleeve 12 is fixed on the rotating shaft 8. The connection between the shaft sleeve 12 and the rotating shaft 8 is sealed by the sealing ring 1201, and the sealing sleeve 11 and the shaft sleeve 12 form a sealed nested structure to seal the circular hole 9, thereby ensuring the sealing of the flameproof housing 2, preventing flammable gas or explosive dust from entering the flameproof housing 2 through the circular hole 9 and contacting with sparks to cause explosion, thereby improving safety;

[0027] A water tank 6 is provided on one side of the base 1, and a first cavity 601 and a second cavity 602 are respectively provided inside the water tank 6;

[0028] Heat sinks 7 are fixed on the outer wall of the flameproof housing 2;

[0029] The outer part of the reduction motor body 3 is provided with a heat-conducting cover 4, which is a ring-shaped structure, and the outer wall of the heat-conducting cover 4 is fixed with heat-conducting sheets 5 at equal intervals;

[0030] A circulation pipe 17 is installed at the bottom end of the flameproof enclosure 2, one end of the circulation pipe 17 is connected to the cold water chamber 201, and the other end of the circulation pipe 17 is connected to the first cavity 601;

[0031] Semiconductor cooling sheets 18 are installed on both outer walls of the water tank 6 at the position of the first cavity 601, and a cooling fan 19 is installed on the outer wall of the semiconductor cooling sheet 18;

[0032] A circulation pump 16 is installed inside the second cavity 602, and a water pumping pipe 1601 is installed at the input end of the circulation pump 16, the water pumping pipe 1601 extends to the inside of the first cavity 601, and a water delivery pipe 1602 is installed at the output end of the circulation pump 16, and the water delivery pipe 1602 is communicated with the cold water cavity 201;

[0033] Specifically, when the reduction motor body 3 is running, the heat-conducting cover 4 transfers the heat generated by the reduction motor body 3 to the outside through the heat-conducting sheet 5, and the circulating pump 16 inside the second cavity 602 extracts the coolant in the first cavity 601 through the pumping pipe 1601 and transports it into the cold water cavity 201 through the water delivery pipe 1602. When the coolant flows inside the cold water cavity 201, the heat is taken away, and the coolant flows back to the first cavity 601 through the circulating pipe 17. The cold end of the semiconductor refrigeration sheet 18 contacts the first cavity 601 to cool the coolant, and the heat dissipation fan 19 dissipates the heat from the hot end of the semiconductor refrigeration sheet 18 to ensure the heat absorption effect of the coolant. The heat dissipation effect of the reduction motor is good through water cooling, thereby reducing the temperature during operation;

[0034] A sealing ring 1201 is adhered to the inner wall of the shaft sleeve 12, and the sealing ring 1201 fits tightly with the rotating shaft 8;

[0035] Specifically, when the rotating shaft 8 rotates, the rotating shaft 8 drives the sleeve 12 to rotate synchronously, and the sleeve 12 rotates inside the sealing sleeve 11;

[0036] A through hole 13 is provided on the outer wall of the sleeve 12, and a bolt 14 is provided inside the through hole 13;

[0037] A threaded hole 15 is provided on the outer wall of the rotating shaft 8 at the position of the through hole 13 , and the threaded hole 15 and the bolt 14 cooperate with each other.

[0038] When the embodiment of the present application is in use: first, the reduction motor separates the reduction motor body 3 that may generate sparks from the surrounding flammable gas or explosive dust through the flameproof casing 2, the rotating shaft 8 extends from the circular hole 9 and passes through the sealing sleeve 11 and the shaft sleeve 12, the bolt 14 is screwed into the corresponding threaded hole 15 from the through hole 13, and the shaft sleeve 12 is fixed on the rotating shaft 8. The connection between the shaft sleeve 12 and the rotating shaft 8 is sealed by the sealing ring 1201. When the rotating shaft 8 rotates, the rotating shaft 8 drives the shaft sleeve 12 to rotate synchronously, and the shaft sleeve 12 rotates inside the sealing sleeve 11. The sealing sleeve 11 and the shaft sleeve 12 form a sealed nested structure to seal the circular hole 9, thereby ensuring the sealing of the flameproof casing 2 and preventing flammable gas or explosive dust from entering the flameproof casing 2 through the circular hole 9 and contacting the spark. The heat generated by the reducer motor body 3 is not caused by the touch, which improves the safety. Then, when the reducer motor body 3 is running, the heat conductive cover 4 transfers the heat generated by the reducer motor body 3 to the outside through the heat conductive sheet 5. The circulating pump 16 inside the second cavity 602 extracts the coolant in the first cavity 601 through the pumping pipe 1601 and transports it into the cold water cavity 201 through the water pipe 1602. When the coolant flows inside the cold water cavity 201, the heat is taken away. The coolant flows back to the first cavity 601 through the circulation pipe 17. The cold end of the semiconductor refrigeration plate 18 contacts the first cavity 601 to cool the coolant. The cooling fan 19 dissipates the heat from the hot end of the semiconductor refrigeration plate 18 to ensure the heat absorption effect of the coolant. The heat dissipation effect of the reducer motor is good through water cooling, thereby reducing the temperature during operation.

Claims

1. A reduction motor with an explosion-proof structure, characterized in that: The invention comprises a base (1), a flameproof housing (2), a reduction motor body (3), a sealing sleeve (11) and a shaft sleeve (12); the flameproof housing (2) is fixed to the top of the base (1); a circular hole (9) is arranged on the outer wall of one side of the flameproof housing (2); a bearing (10) is installed inside the circular hole (9); the sealing sleeve (11) is fixed on the outer wall of the flameproof housing (2) at the position of the circular hole (9); the shaft sleeve (12) is arranged on one side of the sealing sleeve (11); the shaft sleeve (12) and the sealing sleeve (11) are connected to each other. The flameproof housing (2) is tightly nested with the sleeve (11), a cold water chamber (201) is arranged in the side wall of the flameproof housing (2), the reduction motor body (3) is installed inside the flameproof housing (2), and a rotating shaft (8) is installed at one end of the reduction motor body (3), and one end of the rotating shaft (8) passes through the bearing (10), the sealing sleeve (11), and the shaft sleeve (12) in sequence, and a water tank (6) is arranged on one side of the base (1), and a first cavity (601) and a second cavity (602) are respectively arranged inside the water tank (6).

2. The reduction motor with explosion-proof structure according to claim 1 is characterized in that: Heat sinks (7) are fixed on the outer wall of the flameproof casing (2).

3. The reduction motor with explosion-proof structure according to claim 1 is characterized in that: The exterior of the reduction motor body (3) is sheathed with a heat-conducting cover (4), which is an annular structure, and the outer wall of the heat-conducting cover (4) is fixed with heat-conducting sheets (5) at equal intervals.

4. The reduction motor with explosion-proof structure according to claim 1, characterized in that: A circulation pipe (17) is installed at the bottom end of the flameproof enclosure (2), one end of the circulation pipe (17) is connected to the cold water chamber (201), and the other end of the circulation pipe (17) is connected to the first cavity (601).

5. The reduction motor with explosion-proof structure according to claim 1, characterized in that: Semiconductor cooling sheets (18) are installed on both outer walls of the water tank (6) at the position of the first cavity (601), and a heat dissipation fan (19) is installed on the outer wall of the semiconductor cooling sheet (18).

6. The reduction motor with explosion-proof structure according to claim 1, characterized in that: A circulation pump (16) is installed inside the second cavity (602), and a water pumping pipe (1601) is installed at the input end of the circulation pump (16), the water pumping pipe (1601) extends to the inside of the first cavity (601), and a water delivery pipe (1602) is installed at the output end of the circulation pump (16), and the water delivery pipe (1602) is connected to the cold water cavity (201).

7. The reduction motor with explosion-proof structure according to claim 1, characterized in that: A sealing ring (1201) is adhered to the inner wall of the shaft sleeve (12), and the sealing ring (1201) is tightly fitted to the rotating shaft (8).

8. The reduction motor with explosion-proof structure according to claim 1, characterized in that: A through hole (13) is provided on the outer wall of the shaft sleeve (12), and a bolt (14) is provided inside the through hole (13).

9. The reduction motor with explosion-proof structure according to claim 8, characterized in that: A threaded hole (15) is provided on the outer wall of the rotating shaft (8) at the position of the through hole (13), and the threaded hole (15) and the bolt (14) cooperate with each other.

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