A three-phase asynchronous explosion-proof motor

Abstract

The present invention relates to the technical field of three-phase asynchronous motors, and mainly to a three-phase asynchronous explosion-proof motor, comprising a motor body and a heat sink fixed on the motor body, a cooling fan on an output shaft at the rear of the motor body, a bracket fixed to the bottom of the motor body, and a screw rod and a slide rod rotatably mounted on the bracket, a cleaning mechanism for cleaning dust on the heat sink is installed on the screw rod and the slide rod, the outer end of the screw rod is docked with a driving device, and the screw rod is driven to rotate by the driving device; and a shell fixed at the rear of the motor body, the shell is sleeved on the outer side of the cooling fan. The present invention adds a cleaning mechanism to the traditional three-phase asynchronous explosion-proof motor, and realizes the cleaning of dust attached to the heat sink through reciprocating movement. At the same time, each reciprocating movement will trigger a linkage component, so that the adjustment component drives the rotating cylinder and the filter unit to rotate accordingly, so that the filter unit blocked by dust affects the air intake.

Description

Technical Field

[0001] The invention relates to the technical field of three-phase asynchronous motors, in particular to a three-phase asynchronous explosion-proof motor. Background Art

[0002] The three-phase asynchronous motor is a type of induction motor, which is mainly used in flammable and explosive places, such as coal mines, textiles, metallurgy, city gas and other fields.

[0003] A cooling fan is usually provided on the tail output shaft of the existing three-phase asynchronous motor, and a heat sink for heat dissipation is fixed on the motor casing. The cooling fan is driven to blow air toward the heat sink, thereby disturbing the airflow outside the heat sink, thereby improving the heat dissipation of the heat sink. However, in environments such as coal mines and textiles, there is a lot of dust, and the heat sink is very easy to be attached to dust. At the same time, the filter on the cooling fan is also easily blocked due to excessive dust adhesion, resulting in a decrease in air intake, which makes the heat dissipation effect of the motor poor. Summary of the invention

[0004] The object of the present invention is to provide a three-phase asynchronous explosion-proof motor to solve the problem of poor heat dissipation effect caused by dust adhesion on the outside of the three-phase asynchronous motor mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a three-phase asynchronous explosion-proof motor, comprising a motor body and a heat sink fixed on the motor body, a cooling fan on the output shaft at the rear of the motor body, a bracket fixed to the bottom of the motor body, and a screw rod and a sliding rod rotatably mounted on the bracket, a cleaning mechanism for cleaning dust on the heat sink is installed on the screw rod and the sliding rod, the outer end of the screw rod is docked with a driving device, and the screw rod is driven to rotate by the driving device; and a shell fixed to the rear of the motor body, the shell is sleeved on the outer side of the cooling fan, and a plurality of air inlets are opened on the shell, a rotating cylinder is rotatably installed in the shell, and a filter unit that blocks the air inlet is fixed on the outer end of the rotating cylinder, an adjusting component is fixedly installed on the other end of the rotating cylinder, and the rotating cylinder is driven to rotate by the reciprocating movement of the adjusting component; and a linkage member fixed on the adjusting component, which is abutted against the linkage member through the cleaning mechanism to push the linkage member to move.

[0006] Preferably, the cleaning mechanism comprises an arc-shaped seat threadedly sleeved on the outer side of the screw rod, the arc-shaped seat is slidably sleeved with the slide rod, and the arc-shaped seat is provided with a recess matched with the heat sink, and a brush is arranged in the recess.

[0007] Preferably, the adjusting component includes an outer tube and an inner rod, the inner rod is slidably connected to the outer tube, and the outer tube is fixed to the outer side of the rotating cylinder through a connecting plate, the rotating cylinder is provided with a plurality of teeth at equal angles near one end of the outer tube, and the outer tube is provided with a plurality of Y-shaped openings at equal angles near one end of the rotating cylinder, an adjusting shaft is fixed to the outer side of the inner rod, the adjusting shaft is adapted to the Y-shaped opening, and the rotating cylinder and the outer tube are driven to rotate by pushing the adjusting shaft, and the outer end of the inner rod is provided with a return spring that is against the inner wall of the rotating cylinder.

[0008] Preferably, the filter unit comprises a plurality of connecting rods fixed on the outside of the rotating drum, and a filter frame is fixed to the outer end of the connecting rod, and is shielded from the air inlet through the filter frame.

[0009] Preferably, a contact ring is fixed on the outer shell at a position corresponding to the air inlet, and the contact ring is in contact with the filter frame. A plurality of scrapers are fixed on the outer shell away from the air inlet, and the filter frame is scraped by the scrapers.

[0010] Preferably, the number of the filter frames is consistent with the number of the tooth openings, and the number of the tooth openings is consistent with the number of the Y-shaped openings.

[0011] Preferably, the linkage member comprises a linkage plate fixed to the outer end of the inner rod, a linkage rod is fixed to the outer end of the linkage plate, the linkage rod extends out of the housing and is located in the gaps between the plurality of heat sinks.

[0012] Preferably, a stabilizing rod fixed to the inner wall of the shell is slidably inserted on the linkage plate.

[0013] Preferably, an inner shell is fixed on the inner wall of the outer shell, and the inner shell is sleeved on the outer side of the rotating cylinder.

[0014] Preferably, the connecting rod is made of elastic material.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention adds a cleaning mechanism to the traditional three-phase asynchronous explosion-proof motor, and cleans the dust attached to the heat sink through reciprocating movement. At the same time, during each reciprocating movement, the linkage part is triggered, so that the adjusting component drives the rotating cylinder and the filter unit to rotate accordingly, thereby realizing that the filter unit blocked by dust affects the air intake.

[0017] 2. The present invention is designed with a scraper on the shell, which can remove dust attached to the filter unit to prevent the dust from clogging the filter unit. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic diagram of the internal structure of the shell of the present invention after partial section;

[0020] Figure 3 It is a partial cutaway rear side view of the housing of the present invention;

[0021] Figure 4 It is a schematic diagram of the positional relationship between the cleaning mechanism and the linkage member of the present invention;

[0022] Figure 5 This is a schematic diagram of the splitting of the rotating drum, the external structure and the outer shell of the present invention;

[0023] Figure 6 This is a schematic diagram of the positional relationship between the rotating drum, the adjusting component and the filtering unit of the present invention;

[0024] Figure 7 It is a schematic diagram of the position relationship between the adjusting component and the linkage member of the present invention;

[0025] Figure 8 It is a side view of the adjusting component and the rotating cylinder of the present invention.

[0026] In the figure: 1. Motor body; 2. Heat sink; 3. Screw rod; 4. Sliding rod; 5. Cleaning mechanism; 6. Shell; 7. Air inlet; 8. Rotating cylinder; 9. Filter unit; 10. Adjustment component; 11. Linkage member; 12. Arc seat; 13. Notch; 14. Outer tube; 15. Inner rod; 16. Tooth mouth; 17. Y-shaped mouth; 18. Adjustment shaft; 19. Return spring; 20. Connecting rod; 21. Filter frame; 22. Contact ring; 23. Scraper; 24. Linkage plate; 25. Linkage rod; 26. Stabilizing rod; 27. Inner shell. DETAILED DESCRIPTION

[0027] 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.

[0028] Example 1: Please refer to Figure 1 - Figure 5, a three-phase asynchronous explosion-proof motor shown in the figure includes a motor body 1 and a heat sink 2 fixed on the motor body 1, a cooling fan on the output shaft at the tail of the motor body 1, a bracket fixed at the bottom of the motor body 1, and also includes a screw rod 3 and a slide rod 4 rotatably mounted on the bracket, and a cleaning mechanism 5 for cleaning dust on the heat sink 2 is installed on the screw rod 3 and the slide rod 4, and the outer end of the screw rod 3 is docked with a driving device, and the screw rod 3 is driven to rotate by the driving device; and a shell 6 fixed at the tail of the motor body 1, the shell 6 is sleeved on the outside of the cooling fan, and a plurality of air inlets 7 are opened on the shell 6, and a rotating cylinder 8 is rotatably installed in the shell 6, and a filter unit 9 that blocks the air inlet 7 is fixed on the outer end of the rotating cylinder 8, and an adjusting component 10 is fixedly installed on the other end of the rotating cylinder 8, and the rotating cylinder 8 is driven to rotate by the reciprocating movement of the adjusting component 10; and a linkage member 11 fixed on the adjusting component 10, which is pushed to move by the cleaning mechanism 5 against the linkage member 11;

[0029] In this solution, a sliding rod 4 and a screw rod 3 are added to the motor body 1, and an external driving device is used to rotate the screw rod 3, so that the screw rod 3 rotates, thereby driving the cleaning mechanism 5 to move along the heat sink 2 to clean the residual dust on the heat sink 2. During the moving cleaning process, the linkage part 11 is also triggered to push the adjustment component 10 accordingly, thereby driving the rotating cylinder 8 to rotate and rotating the filter unit 9 to rotate, thereby preventing the filter unit 9 blocked by dust on the outside of the air inlet 7 from reducing the air intake.

[0030] For further information, see Figure 2 - Figure 4 The cleaning mechanism 5 includes an arc-shaped seat 12 threadedly sleeved on the outer side of the screw rod 3, the arc-shaped seat 12 is slidably sleeved with the slide rod 4, and a notch 13 adapted to the heat sink 2 is formed on the arc-shaped seat 12, and a brush is arranged in the notch 13;

[0031] The principle of cleaning the heat sink 2 is as follows: the screw rod 3 is driven to rotate by an external driving device, so that the arc seat 12 moves back and forth along the screw rod 3. During the movement, the brush in the notch 13 on the arc seat 12 will wipe the heat sink 2 to remove the dust attached thereto.

[0032] For further information, see Figure 5 , Figure 7 and Figure 8The adjusting component 10 includes an outer tube 14 and an inner rod 15. The inner rod 15 is slidably connected with the outer tube 14. The outer tube 14 is fixed to the outer side of the rotating cylinder 8 through a connecting plate. The rotating cylinder 8 is provided with a plurality of tooth openings 16 at equal angles at one end of the outer tube 14. The outer tube 14 is provided with a plurality of Y-shaped openings 17 at equal angles at one end of the rotating cylinder 8. An adjusting shaft 18 is fixed to the outer side of the inner rod 15. The adjusting shaft 18 is adapted to the Y-shaped opening 17. The rotating cylinder 8 and the outer tube 14 are driven to rotate by pushing the adjusting shaft 18. The outer end of the inner rod 15 is provided with a return spring 19 that abuts against the inner wall of the rotating cylinder 8.

[0033] The linkage member 11 includes a linkage plate 24 fixed to the outer end of the inner rod 15 , a linkage rod 25 is fixed to the outer end of the linkage plate 24 , and the linkage rod 25 extends out of the housing 6 and is located in the gaps between the plurality of heat sinks 2 .

[0034] The principle of movement of the adjusting component 10 brought by the linkage 11 is as follows: during the movement of the arc seat 12, it will contact the linkage rod 25 and squeeze the linkage rod 25, so that the linkage plate 24 and the inner rod 15 move accordingly, and through the movement of the inner rod 15, the adjusting shaft 18 is disengaged from the Y-shaped mouth 17 and contacts the bevel of the tooth mouth 16. As the adjusting shaft 18 is pushed, it moves along the bevel of the tooth mouth 16, which will drive the corresponding rotation of the rotating cylinder 8. Subsequently, the arc seat 12 retreats, and under the action of the return spring 19, the inner rod 15 drives the adjusting shaft 18 to retreat accordingly, and when retreating, it passes through the bevel of another adjacent Y-shaped mouth 17, and finally enters another adjacent Y-shaped mouth 17, and at the same time drives the rotating cylinder 8 to rotate a certain angle again. Back and forth, it finally drives the rotating cylinder 8 to rotate a complete rotation, and the subsequent pushing of the inner rod 15 again will cause the rotating cylinder 8 to be rotated again, so that the axial reciprocating movement of the inner rod 15 drives the rotating cylinder 8 to rotate at the same angle.

[0035] Also, see Figure 4 - Figure 6 The filter unit 9 includes a plurality of connecting rods 20 fixed on the outside of the rotating cylinder 8, and a filter frame 21 is fixed to the outer end of the connecting rod 20, and is shielded from the air inlet 7 by the filter frame 21;

[0036] The number of the filter frames 21 is consistent with the number of the tooth openings 16 , and the number of the tooth openings 16 is consistent with the number of the Y-shaped openings 17 .

[0037] The above-mentioned number of designs enables the multiple connecting rods 20 and the filter frames 21 to rotate correspondingly each time the rotating drum 8 rotates at equal angles, so that the new filter frames 21 are shielded from the air inlet 7 .

[0038] It should also be noted that, in order to make the linkage plate 24 more stable when moving, a stabilizing rod 26 fixed to the inner wall of the housing 6 is slidably inserted on the linkage plate 24 .

[0039] Example 2: Please refer to Figure 5 This embodiment further explains the first embodiment, and the difference lies in that the structure of the housing 6 is optimized.

[0040] Specifically, a contact ring 22 is fixed on the housing 6 at a position corresponding to the air inlet 7, and the contact ring 22 fits the filter frame 21. A plurality of scrapers 23 are fixed on the housing 6 away from the air inlet 7, and the filter frame 21 is scraped by the scrapers 23.

[0041] The connecting rod 20 is made of elastic material.

[0042] In this solution, the design of the contact ring 22 removes the gap between the air inlet 7 and the filter frame 21, so that when air is taken in through the air inlet 7, the airflow will pass through the filter frame 21. At the same time, the scraper 23 designed on the outer shell 6 will make multiple filter frames 21 pass through the scraper 23 one by one when moving, thereby removing the residual dust on the filter frame 21. At the same time, the connecting rod 20 is made of elastic material, which will cause it to shake every time it passes through the scraper 23, thereby assisting in the falling of dust.

[0043] Example 3: Please refer to Figure 4 This embodiment further illustrates other embodiments, and the difference lies in that the structure of the housing 6 is optimized.

[0044] Specifically, an inner shell 27 is fixed on the inner wall of the outer shell 6, and the inner shell 27 is sleeved on the outer side of the rotating cylinder 8. The design of the inner shell 27 not only protects the rotating cylinder 8, but also assists the air inlet 7 to enter the device.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] 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 three-phase asynchronous explosion-proof motor, comprising: A motor body (1) and a heat sink (2) fixed on the motor body (1), a heat dissipation fan on the output shaft at the rear of the motor body (1), and a bracket fixed at the bottom of the motor body (1); It is characterized by further comprising: A screw rod (3) and a slide rod (4) are rotatably mounted on the bracket, wherein a cleaning mechanism (5) for cleaning dust on the heat sink (2) is mounted on the screw rod (3) and the slide rod (4), and the outer end of the screw rod (3) is docked with a driving device, and the screw rod (3) is driven to rotate by the driving device; and, A housing (6) fixed to the rear of the motor body (1), the housing (6) being sleeved on the outside of the cooling fan, and the housing (6) being provided with a plurality of air inlets (7), a rotating cylinder (8) being rotatably mounted in the housing (6), and a filter unit (9) shielding the air inlet (7) being fixed to the outer end of the rotating cylinder (8), and an adjusting component (10) being fixed to the other end of the rotating cylinder (8), and the rotating cylinder (8) being driven to rotate by the reciprocating movement of the adjusting component (10); and A linkage member (11) fixed on the adjusting component (10) is pushed to move by the cleaning mechanism (5) against the linkage member (11); The adjusting component (10) comprises an outer tube (14) and an inner rod (15); the inner rod (15) is slidably connected to the outer tube (14); the outer tube (14) is fixed to the outer side of the rotating cylinder (8) via a connecting plate; a plurality of tooth openings (16) are provided at equal angles at one end of the rotating cylinder (8) close to the outer tube (14); and a plurality of Y-shaped openings (17) are provided at equal angles at one end of the outer tube (14) close to the rotating cylinder (8); an adjusting shaft (18) is fixed to the outer side of the inner rod (15); the adjusting shaft (18) is matched with the Y-shaped opening (17); and the rotating cylinder (8) and the adjusting shaft (18) are driven by pushing the adjusting shaft (18). The outer tube (14) rotates, and the outer end of the inner rod (15) is sleeved with a return spring (19) that abuts against the inner wall of the rotating cylinder (8). The filter unit (9) comprises a plurality of connecting rods (20) fixed on the outer side of the rotating cylinder (8). A filter frame (21) is fixed to the outer end of the connecting rod (20) and the filter frame (21) is shielded from the air inlet (7). The linkage member (11) comprises a linkage plate (24) fixed to the outer end of the inner rod (15). A linkage rod (25) is fixed to the outer end of the linkage plate (24). The linkage rod (25) extends out of the outer shell (6) and is located in the gap between the plurality of heat sinks (2).

2. A three-phase asynchronous explosion-proof motor according to claim 1, characterized in that: The cleaning mechanism (5) comprises an arc-shaped seat (12) threadedly sleeved on the outside of the screw rod (3), the arc-shaped seat (12) being slidably sleeved with the slide rod (4), and a recess (13) matching the heat sink (2) is formed on the arc-shaped seat (12), and a brush is arranged in the recess (13).

3. A three-phase asynchronous explosion-proof motor according to claim 1, characterized in that: A contact ring (22) is fixed on the outer shell (6) at a position corresponding to the air inlet (7), and the contact ring (22) is in contact with the filter frame (21). A plurality of scrapers (23) are fixed on the outer shell (6) away from the air inlet (7), and the filter frame (21) is scraped by the scrapers (23).

4. The three-phase asynchronous explosion-proof motor according to claim 1, characterized in that: The number of the plurality of filter frames (21) is consistent with the number of the plurality of tooth openings (16), and the number of the plurality of tooth openings (16) is consistent with the number of the plurality of Y-shaped openings (17).

5. A three-phase asynchronous explosion-proof motor according to claim 4, characterized in that: A stabilizing rod (26) fixed to the inner wall of the outer shell (6) is slidably inserted into the linkage plate (24).

6. The three-phase asynchronous explosion-proof motor according to claim 1, characterized in that: An inner shell (27) is fixed on the inner wall of the outer shell (6), and the inner shell (27) is sleeved on the outer side of the rotating cylinder (8).

7. The three-phase asynchronous explosion-proof motor according to claim 1, characterized in that: The connecting rod (20) is made of elastic material.

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