A dust-removing explosion-proof motor

Abstract

The present invention discloses a dust-removing explosion-proof motor, comprising a shell, wherein the lower side of the shell is connected to a support seat through a rib plate, and a plurality of groups of heat-conducting fins are arranged on the outer wall of the shell; one end of the shell is connected to a tube body extending outward, a motor is installed inside the shell, and the motor output shaft passes horizontally through the tube body; a dust-removing mechanism is arranged inside the tube body, and the dust-removing mechanism comprises a plurality of groups of dust-removing blades, and the plurality of groups of dust-removing blades are connected to the motor output shaft through a transmission assembly; when the motor of the present invention is working, the output shaft is driven to rotate, and the output shaft drives the plurality of groups of dust-removing blades to rotate in the tube body, forming an airflow and air pressure to isolate dust, thereby preventing dust from entering the interior of the motor, and having a good dust-proof effect and a long working life of the motor.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof motors, in particular to a dust removal type explosion-proof motor. Background Art

[0002] Explosion-proof motors are motors that can be used in flammable and explosive places and do not generate 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, city gas, transportation, grain and oil processing, papermaking, medicine and other sectors. As the main power equipment, explosion-proof motors are usually used to drive pumps, fans, compressors and other transmission machinery.

[0003] After an explosion-proof motor has been working for a long time, dust will adhere to the inside of the motor. The dust is not easy to clean and will affect the service life of the motor. The prior art uses a dust-proof sealing ring fixed on the motor shaft to play a role of plane sealing. After the motor shaft rotates at high speed for a long time, it is easy to wear and reduce the dust-proof effect. Therefore, the present invention proposes a dust-removing explosion-proof motor that can solve the above problem. Summary of the invention

[0004] The object of the present invention is to provide a dust-removing explosion-proof motor to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a dust-removing explosion-proof motor, comprising a housing, the lower side of the housing is connected to a support seat through a rib plate, and a plurality of groups of heat-conducting fins are arranged on the outer wall of the housing; one end of the housing is connected to a tube body extending outward, a motor is installed inside the housing, and the output shaft of the motor passes through the tube body horizontally;

[0006] A dust removal mechanism is arranged in the tube body, and the dust removal mechanism comprises a plurality of groups of dust removal blades, and the plurality of groups of dust removal blades are connected to the output shaft of the motor through a transmission assembly.

[0007] As a preferred technical solution of the present invention, a plurality of groups of sealing rings are arranged at intervals on the inner wall of the housing, and the plurality of groups of sealing rings are in contact with the outer wall of the motor.

[0008] As a preferred technical solution of the present invention, two adjacent groups of sealing rings form a heat dissipation cavity in the shell, the outer wall of the motor is provided with heat dissipation grooves at each group of heat dissipation cavities, and the heat conducting fins are distributed on the outer wall of the shell corresponding to the heat dissipation cavities.

[0009] As a preferred technical solution of the present invention, the tube body includes a connecting tube and a cover body, the inner end of the connecting tube is connected to the shell, the outer end of the connecting tube is connected to the cover body, and the cover body extends outward in a trumpet-shaped structure with a gradually decreasing inner diameter.

[0010] As a preferred technical solution of the present invention, the transmission assembly includes a sleeve body sleeved on the output shaft of the motor, and a plurality of groups of the dust removal blades are evenly distributed on the outer wall of the sleeve body in the circumferential direction.

[0011] As a preferred technical solution of the present invention, a transverse groove is provided on the sleeve body, and a driving block that can be embedded in the transverse groove is provided on the outer wall of the motor output shaft, and the length of the transverse groove is greater than the length of the driving block.

[0012] As a preferred technical solution of the present invention, a ring plate is fixedly connected to the motor shaft on the rear side of the sleeve, a spring is wound on the motor output shaft, one end of the spring is connected to the ring plate, and the other end is connected to the sleeve, a first sealing ring is provided at the rear end of the sleeve, and a second sealing ring is provided at the front end of the sleeve.

[0013] As a preferred technical solution of the present invention, when the motor is in a stopped state, the sleeve drives the first sealing ring to press against the inner wall of the shell under the elastic force of the spring, and drives the second sealing ring to press against the inner wall of the cover body; when the motor is in a working state, the motor output shaft drives several groups of dust removal blades to rotate through the sleeve, forming an air flow and air pressure to isolate the dust, and at the same time, the spring is compressed under the reaction force of the dust removal blades, so that the first sealing ring is separated from the inner wall of the shell, and the second sealing ring is separated from the inner wall of the cover body.

[0014] Compared with the prior art, the invention has the following beneficial effects: the invention provides a dust-removing explosion-proof motor, when the motor is working, the output shaft is driven to rotate, and the output shaft drives a plurality of dust-removing fan blades to rotate in the tube body, forming an airflow and air pressure to isolate dust, thereby preventing dust from entering the interior of the motor, having a good dust-proof effect, and having a long working life of the motor. When the motor is working, the heat is transferred from the heat dissipation slot to the heat-conducting fins through the heat dissipation cavity, thereby effectively isolating dust from entering the interior of the motor from the heat dissipation slot;

[0015] When the motor is working, the heat is transferred from the heat sink to the heat conducting fins through the heat sink cavity, effectively isolating dust from entering the motor from the heat sink;

[0016] When the motor is in a stopped state, the sleeve body drives the first sealing ring to press against the inner wall of the shell under the elastic force of the spring, and drives the second sealing ring to press against the inner wall of the cover body. When the motor is stopped, the first sealing ring presses against the inner wall of the shell, and the second sealing ring presses against the inner wall of the cover body to play a double sealing role, so as to seal and isolate dust when the motor is stopped;

[0017] When the motor is in working state, the motor output shaft drives several groups of dust removal blades to rotate through the sleeve, forming air flow and air pressure to isolate dust. At the same time, the spring is compressed under the reaction force of the dust removal blades, so that the first sealing ring is separated from the inner wall of the shell, and the second sealing ring is separated from the inner wall of the cover body, and the first sealing ring does not contact the inner wall of the shell under the rotation of the motor output shaft, and the second sealing ring does not contact the inner wall of the cover body under the rotation of the motor output shaft. The first sealing ring and the second sealing ring are not easy to wear when working for a long time, and the dust prevention effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention;

[0020] Figure 3 This is a schematic diagram of the dust removal fan blades of the present invention being connected to the motor output shaft via a transmission assembly;

[0021] In the figure: 10, support seat; 11, rib plate; 20, shell; 21, heat-conducting fins; 22, sealing ring; 23, heat dissipation cavity; 30, motor; 31, heat dissipation groove; 32, drive block; 40, tube body; 41, connecting pipe; 42, cover body; 50, dust removal mechanism; 51, dust removal blades; 52, sleeve body; 53, transverse groove; 54, ring plate; 55, spring; 56, first sealing ring; 57, second sealing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1-3

[0026] Example 1

[0027] The present invention provides a technical solution: a dust-removing explosion-proof motor, comprising a shell 20, the lower side of the shell 20 is connected to a support seat 10 through a rib 11, and a plurality of groups of heat-conducting fins 21 are arranged on the outer wall of the shell 20; one end of the shell 20 is connected to a tube body 40 extending outward, a motor 30 is installed inside the shell 20, and the output shaft of the motor 30 passes horizontally through the tube body 40; a dust removal mechanism 50 is arranged in the tube body 40, and the dust removal mechanism 50 includes a plurality of groups of dust removal blades 51, and the plurality of groups of dust removal blades 51 are connected to the output shaft of the motor 30 through a transmission assembly.

[0028] Specifically, when the motor 30 is working, it drives the output shaft to rotate, and the output shaft drives a plurality of dust removal blades 51 to rotate in the tube body 40, forming air flow and air pressure to isolate dust, thereby preventing dust from entering the interior of the motor 30, having a good dustproof effect, and extending the working life of the motor 30.

[0029] Example 2

[0030] The present invention provides a technical solution: a dust-removing explosion-proof motor, comprising a shell 20, a support seat 10 is connected to the lower side of the shell 20 through a rib plate 11, and a plurality of groups of heat-conducting fins 21 are arranged on the outer wall of the shell 20; one end of the shell 20 is connected to a tube body 40 extending outward, a motor 30 is installed inside the shell 20, and the output shaft of the motor 30 passes horizontally through the tube body 40; a dust-removing mechanism 50 is arranged in the tube body 40, and the dust-removing mechanism 50 includes a plurality of groups of dust-removing blades 51, and the plurality of groups of dust-removing blades 51 are connected to the output shaft of the motor 30 through a transmission assembly; a plurality of groups of sealing rings 22 are arranged at intervals on the inner wall of the shell 20, and the plurality of groups of sealing rings 22 are all in contact with the outer wall of the motor 30; two adjacent groups of sealing rings 22 form a heat dissipation cavity 23 in the shell 20, and the outer wall of the motor 30 is provided with heat dissipation grooves 31 at each group of heat dissipation cavities 23, and the heat-conducting fins 21 are distributed on the outer wall of the shell 20 corresponding to the heat dissipation cavities 23.

[0031] Specifically, when the motor 30 is working, it drives the output shaft to rotate, and the output shaft drives several groups of dust removal blades 51 to rotate in the tube body 40, forming air flow and air pressure to isolate dust, thereby preventing dust from entering the interior of the motor 30, with good dustproof effect. The working life of the motor 30 is long, and when the motor 30 is working, the heat is transferred from the heat sink 31 to the heat conducting fins 21 through the heat sink cavity 23, thereby effectively isolating dust from the heat sink 31 from entering the interior of the motor 30.

[0032] Example 3

[0033] On the basis of Example 1 or Example 2, the tube body 40 includes a connecting tube 41 and a cover body 42, the inner end of the connecting tube 41 is connected to the shell 20, and the outer end of the connecting tube 41 is connected to the cover body 42, the cover body 42 extends outward in a trumpet-shaped structure, and the inner diameter gradually decreases; the transmission assembly includes a sleeve 52 sleeved on the output shaft of the motor 30, and a plurality of groups of dust removal blades 51 are circumferentially evenly distributed on the outer wall of the sleeve 52; a transverse groove 53 is provided on the sleeve 52, and a driving block 32 that can be embedded in the transverse groove 53 is provided on the outer wall of the output shaft of the motor 30, and the length of the transverse groove 53 is greater than the length of the driving block 32; a ring plate 54 is fixedly connected to the shaft of the motor 30 at the rear side of the sleeve 52, and a spring 55 is wound around the output shaft of the motor 30, and the spring 55 is One end is connected to the ring plate 54, and the other end is connected to the sleeve 52. A first sealing ring 56 is provided at the rear end of the sleeve 52, and a second sealing ring 57 is provided at the front end of the sleeve 52; when the motor 30 is in the stopped state, the sleeve 52 drives the first sealing ring 56 to press against the inner wall of the shell 20 under the elastic force of the spring 55, and drives the second sealing ring 57 to press against the inner wall of the cover 42; when the motor 30 is in the working state, the output shaft of the motor 30 drives several groups of dust removal blades 51 to rotate through the sleeve 52, forming an air flow and air pressure to isolate dust. At the same time, the spring 55 is compressed under the reaction force of the dust removal blades 51, so that the first sealing ring 56 is separated from the inner wall of the shell 20, and the second sealing ring 57 is separated from the inner wall of the cover 42.

[0034] Specifically, when the motor 30 is in the stopped state, the sleeve 52 drives the first sealing ring 56 to press against the inner wall of the housing 20 under the elastic force of the spring 55, and drives the second sealing ring 57 to press against the inner wall of the cover 42. When the motor 30 is stopped, the first sealing ring 56 presses against the inner wall of the housing 20, and the second sealing ring 57 presses against the inner wall of the cover 42 to play a double sealing role, sealing and isolating the dust in the stopped state of the motor 30; when the motor 30 is in the working state, the output shaft of the motor 30 drives a plurality of The dust removal fan blades 51 rotate to form an air flow and air pressure to isolate the dust. At the same time, the spring 55 is compressed under the reaction force of the dust removal fan blades 51, so that the first sealing ring 56 is separated from the inner wall of the shell 20, and the second sealing ring 57 is separated from the inner wall of the cover body 42. The first sealing ring 56 does not contact the inner wall of the shell 20 under the rotation of the output shaft of the motor 30, and the second sealing ring 57 does not contact the inner wall of the cover body 42 under the rotation of the output shaft of the motor 30. The first sealing ring 56 and the second sealing ring 57 are not easy to wear when working for a long time, and the dust prevention effect is good.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust-removing explosion-proof motor, characterized in that: It comprises a shell, the lower side of which is connected to a support seat through a rib plate, and a plurality of groups of heat-conducting fins are arranged on the outer wall of the shell; one end of the shell is connected to a tube body extending outward, a motor is installed inside the shell, and the output shaft of the motor passes through the tube body horizontally; A dust removal mechanism is provided in the tube body, and the dust removal mechanism includes a plurality of groups of dust removal blades, and the plurality of groups of dust removal blades are connected to the output shaft of the motor through a transmission assembly; The tube body comprises a connecting tube and a cover body, the inner end of the connecting tube is connected to the shell, the outer end of the connecting tube is connected to the cover body, and the cover body extends outward in a trumpet-shaped structure with an inner diameter gradually decreasing; The transmission assembly comprises a sleeve body sleeved on the output shaft of the motor, and a plurality of groups of dust removal blades are evenly distributed on the outer wall of the sleeve body in the circumferential direction; The sleeve body is provided with a transverse groove, and the outer wall of the motor output shaft is provided with a driving block which can be embedded in the transverse groove, and the length of the transverse groove is greater than the length of the driving block; A ring plate is fixedly connected to the motor output shaft at the rear side of the sleeve body, a spring is wound on the motor output shaft, one end of the spring is connected to the ring plate, and the other end is connected to the sleeve body, a first sealing ring is arranged at the rear end of the sleeve body, and a second sealing ring is arranged at the front end of the sleeve body; When the motor is in a stopped state, the sleeve body drives the first sealing ring to press against the inner wall of the shell under the elastic force of the spring, and drives the second sealing ring to press against the inner wall of the cover body; when the motor is in a working state, the motor output shaft drives a plurality of groups of dust removal blades to rotate through the sleeve body, forming an air flow and air pressure to isolate dust, and at the same time, the spring is compressed under the reaction force of the dust removal blades, so that the first sealing ring is separated from the inner wall of the shell, and the second sealing ring is separated from the inner wall of the cover body; When the motor is in a stopped state, the sleeve drives the first sealing ring to press against the inner wall of the shell under the elastic force of the spring, and drives the second sealing ring to press against the inner wall of the cover body. When the motor is stopped, the first sealing ring presses against the inner wall of the shell, and the second sealing ring presses against the inner wall of the cover body to play a double sealing role, thereby sealing and isolating dust from the motor when it is stopped; when the motor is in a working state, the motor output shaft drives several groups of dust removal blades to rotate through the sleeve, forming air flow and air pressure to isolate dust, and at the same time, the spring is compressed under the reaction force of the dust removal blades, so that the first sealing ring is separated from the inner wall of the shell, and the second sealing ring is separated from the inner wall of the cover body, and the first sealing ring does not contact the inner wall of the shell under the rotation of the motor output shaft, and the second sealing ring does not contact the inner wall of the cover body under the rotation of the motor output shaft. The first sealing ring and the second sealing ring are not easy to wear when working for a long time.

2. A dust-removing explosion-proof motor according to claim 1, characterized in that: A plurality of groups of sealing rings are arranged at intervals on the inner wall of the shell, and the plurality of groups of sealing rings are all in contact with the outer wall of the motor.

3. A dust-removing explosion-proof motor according to claim 2, characterized in that: Two adjacent groups of sealing rings form a heat dissipation cavity in the shell, and the outer wall of the motor is provided with heat dissipation grooves at each group of heat dissipation cavities, and the heat conducting fins are distributed on the outer wall of the shell corresponding to the heat dissipation cavities.

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