Dustproof motor shell of three-phase asynchronous motor

Abstract

The utility model provides a dustproof motor casing of a three-phase asynchronous motor, which comprises a cylindrical casing, radiating fins and a switching box are arranged on the peripheral wall of the cylindrical casing, a sealing cylinder is sleeved outside the cylindrical casing, the radiating fins are accommodated in the sealing cylinder, radiating holes positioned among the radiating fins are arranged on the peripheral wall of the cylindrical casing, and the radiating holes are communicated with the switching box. The switching box penetrates through the peripheral wall of the sealing cylinder, long clamping grooves distributed at equal intervals in the circumferential direction and short clamping grooves located in the left side and the right side of the switching box are formed in the peripheral wall of the sealing cylinder, long dustproof nets are clamped in the long clamping grooves, and short dustproof nets are detachably connected in the short clamping grooves. The long dustproof net and the short dustproof net are installed in a clamping mode, so that when meshes of the long dustproof net and the short dustproof net are blocked, the long dustproof net and the short dustproof net can be directly pulled out and then flushed and reset, and the dustproof device has the advantage of being more convenient to clean blockages.

Description

Technical Field

[0001] The utility model relates to the technical field of three-phase asynchronous motors, in particular to a dustproof motor shell of a three-phase asynchronous motor. Background Art

[0002] Long-term use of the motor will cause a lot of dust to accumulate inside the motor. Too much dust will reduce the overall performance of the motor and greatly affect the service life of the motor. In addition, since a large amount of heat is generated during the use of the motor, the temperature inside the motor will be too high, thereby reducing the efficiency and performance of the motor.

[0003] The utility model with publication number CN217087636U proposes a dustproof motor housing for a three-phase asynchronous motor, comprising a housing and a slip ring, wherein the housing is cylindrical, the housing surface is a screen structure, a slide rail along the housing is provided on the housing surface, the slip ring is an annular structure, a brush is provided on the inner wall of the slip ring, a boss is provided on the inner wall of the slip ring, the slip ring is sleeved on the outer surface of the housing, the brush is in contact with the housing, the boss cooperates with the slide rail to allow the slip ring to translate relative to the housing along the slide rail, and the dustproof motor housing of the three-phase asynchronous motor is adopted to improve the dustproofness of the motor, and at the same time has the function of cleaning the dust accumulated on the housing, thereby improving the use efficiency of the motor and avoiding performance degradation.

[0004] However, the above-mentioned prior art still has the following deficiencies when used: 1. The above-mentioned prior art sets the entire object into a screen-type structure, and the outer shell plays a bearing role. The screen-type outer shell obviously has reduced strength, which affects the bearing strength and is not conducive to the stable operation of the motor; 2. If the screen-type outer shell is to meet the dust-proof function, the aperture of the screen holes on it must be small, which easily leads to the problem of dust blocking the screen holes, and the brush provided therein is difficult to clean out the blockages in the screen holes when moving horizontally. At the same time, when cleaning, the blockages in the screen holes will fall into the casing, and the dust-proof effect is poor; 3. The outer wall of a common motor casing is usually provided with a junction box, and the slip ring structure provided therein is obviously not suitable for a motor casing with a junction box, and has the disadvantage of a small scope of application.

[0005] To this end, the utility model provides a dustproof motor housing for a three-phase asynchronous motor. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a dustproof motor housing for a three-phase asynchronous motor to solve the problems raised in the above-mentioned background technology. The utility model has the advantages of more thorough dust prevention, more convenient cleaning of blockages, better heat dissipation effect and wider scope of application.

[0007] To achieve the above object, the present utility model is realized by the following technical solutions: A dust-proof motor housing for a three-phase asynchronous motor, including a cylindrical housing, wherein the outer peripheral wall of the cylindrical housing is provided with heat dissipation fins and a transfer box, an outer sleeve of a sealing cylinder is provided outside the cylindrical housing, the heat dissipation fins are accommodated in the sealing cylinder, heat dissipation holes are provided on the outer peripheral wall of the cylindrical housing between the heat dissipation fins, the transfer box penetrates through the peripheral wall of the sealing cylinder, long card slots and short card slots are provided on the outer peripheral wall of the sealing cylinder at circumferentially equally spaced intervals and on the left and right sides of the transfer box, a long dust-proof net is clamped in the long card slots, and a short dust-proof net is detachably connected in the short card slots.

[0008] Further, both the long card slots and the short card slots are rectangular, both the long dust-proof net and the short dust-proof net are rectangular box-shaped, and the long dust-proof net and the short dust-proof net are in a state of protruding outward relative to the outer peripheral wall of the sealing cylinder.

[0009] Further, the long dust-proof net includes a long rectangular box with an open bottom and a long filter screen cloth adhered to the inner wall of the long rectangular box, uniformly distributed bottom ventilation holes are provided through the bottom wall in the long rectangular box, the short dust-proof net includes a short rectangular box with an open bottom and a short filter screen cloth adhered to the inner wall of the short rectangular box, uniformly distributed bottom ventilation holes are provided through the bottom wall in the short rectangular box, and side ventilation holes are provided on both sides of the long rectangular box and the short rectangular box.

[0010] Further, baffles are welded at both ends of the long rectangular box and the short rectangular box, and a circle of rubber pads is adhered to the inner peripheral walls of the long card slots and the short card slots.

[0011] Further, the mesh number of the long filter screen cloth and the short filter screen cloth is one of 100, 150, and 200.

[0012] Further, the aperture of the side ventilation holes is smaller than the aperture of the bottom ventilation holes.

[0013] Further, a pull rod is welded on the front side of the baffle.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. By providing an outer sleeve of a sealing cylinder outside the cylindrical housing in the present utility model, the heat dissipation fins on the cylindrical housing are located inside the sealing cylinder, and the cylindrical housing plays a role of bearing, ensuring the strength required to bear the entire motor.

[0016] 2. By providing long card slots and short card slots on the outer peripheral wall of the sealing cylinder in the present utility model, it is convenient for the cylindrical housing to ventilate and dissipate heat, and then a long dust-proof net and a short dust-proof net are respectively clamped in the long card slots and the short card slots, which play a role in preventing dust from entering the cylindrical housing and covering the heat dissipation fins, and thus will not affect the normal heat dissipation of the cylindrical housing.

[0017] 3. The long dust-proof net and the short dust-proof net of the present utility model are installed by snap connection. Therefore, when the meshes of the long dust-proof net and the short dust-proof net are blocked, they can be directly pulled out and then rinsed and reset, which has the advantage of being more convenient for cleaning the blockage.

[0018] 4. The long dust-proof net and the short dust-proof net of the present utility model are both in the shape of a rectangular box, and they are in a convex state after installation, which is convenient for air flow to pass through the protruding long dust-proof net and short dust-proof net and enter the outer peripheral wall and the interior of the cylindrical casing, greatly improving the ventilation and heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural view of a dust-proof motor casing of a three-phase asynchronous motor of the present utility model;

[0020] Figure 2 It is a schematic view of the explosion and expansion of a dust-proof motor casing of a three-phase asynchronous motor of the present utility model;

[0021] Figure 3 is Figure 2 a schematic view after partial "a" in is enlarged;

[0022] Figure 4 It is a schematic view of a short rectangular box of a dust-proof motor casing of a three-phase asynchronous motor of the present utility model;

[0023] In the figure: 1. Cylindrical casing; 11. Heat dissipation fins; 12. Adapter box; 2. Sealing cylinder; 21. Long card slot; 22. Short card slot; 4. Long dust-proof net; 41. Long rectangular box; 42. Long filter cloth; 5. Short dust-proof net; 51. Short rectangular box; 52. Short filter cloth; 6. Bottom ventilation hole; 7. Side ventilation hole; 8. Baffle; 81. Pull rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific embodiments.

[0025] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a dust-proof motor casing of a three-phase asynchronous motor, including a cylindrical casing 1, the outer peripheral wall of the cylindrical casing 1 is provided with heat dissipation fins 11 and an adapter box 12. The function of the heat dissipation fins 11 is to accelerate the heat dissipation of the cylindrical casing 1. When a large amount of dust covers the heat dissipation fins 11, it will also affect the normal heat dissipation of the cylindrical casing 1. The adapter box 12 is a junction box, which is the hub for connecting the cable and the inner winding of the motor.

[0026] In this technical solution, a sealing cylinder 2 is sleeved outside the cylindrical housing 1, and the heat dissipation fins 11 are accommodated in the sealing cylinder 2. That is to say, annular sealing plates welded to the outer peripheral wall of the cylindrical housing 1 are welded at both ends of the sealing cylinder 2. The connection box 12 penetrates through the peripheral wall of the sealing cylinder 2. A heat dissipation hole (not shown in the figure) located between the heat dissipation fins 11 is provided on the outer peripheral wall of the cylindrical housing 1. This heat dissipation hole does not have a filtering function and only serves the purpose of ventilation and heat dissipation. Long card slots 21 evenly distributed circumferentially and short card slots 22 located on the left and right sides of the connection box 12 are provided on the outer peripheral wall of the sealing cylinder 2. The two ends of the long card slot 21 extend to positions close to both ends of the sealing cylinder 2. A long dust-proof net 4 is clamped in the long card slot 21, and a short dust-proof net 5 is detachably connected in the short card slot 22. Both the long dust-proof net 4 and the short dust-proof net 5 play the role of ventilation and dust prevention, and their installation by clamping also has the advantage of being more convenient for disassembly and cleaning.

[0027] Specifically, both the long card slot 21 and the short card slot 22 are rectangular, and both the long dust-proof net 4 and the short dust-proof net 5 are rectangular box-shaped. The long dust-proof net 4 and the short dust-proof net 5 protrude outward relative to the outer peripheral wall of the sealing cylinder 2. The long dust-proof net 4 and the short dust-proof net 5 are respectively clamped with the long card slot 21 and the short card slot 22 in an inverted buckling manner, and this protruding feature makes the ventilation of the long dust-proof net 4 and the short dust-proof net 5 better.

[0028] Furthermore, the long dust-proof net 4 includes a long rectangular box 41 with an open bottom and a long filter screen cloth 42 adhered to the inner wall of the long rectangular box 41. Uniformly distributed bottom ventilation holes 6 are penetrated through the bottom wall in the long rectangular box 41. The short dust-proof net 5 includes a short rectangular box 51 with an open bottom and a short filter screen cloth 52 adhered to the inner wall of the short rectangular box 51. Uniformly distributed bottom ventilation holes 6 are penetrated through the bottom wall in the short rectangular box 51. Side ventilation holes 7 are provided on both sides of the long rectangular box 41 and the short rectangular box 51. The setting of the side ventilation holes 7 and the bottom ventilation holes 6 causes the air flow to show the phenomenon of entering and leaving the long filter screen cloth 42 and the short filter screen cloth 52, which can effectively reduce the formation period of the blockage on the long filter screen cloth 42 and the short filter screen cloth 52.

[0029] Among them, baffles 8 are welded at both ends of the long rectangular box 41 and the short rectangular box 51, and a rubber pad is adhered to the inner peripheral wall of both the long card slot 21 and the short card slot 22. The function of the baffle 8 is for limiting. That is to say, when the long rectangular box 41 and the short rectangular box 51 are inserted into the long card slot 21 and the short card slot 22 in an inverted buckling manner, the baffle 8 will abut against the outer peripheral wall of the cylindrical housing 1. The function of the rubber pad is to increase the resistance of the long rectangular box 41 and the short rectangular box 51 to be inserted into the long card slot 21 and the short card slot 22 respectively, and improve the tightness and stability of the plug-in connection.

[0030] Furthermore, a pull rod 81 is welded on the front side of the baffle 8. The pull rod 81 is a hand-held component, which is convenient for manual holding of the pull rod 81 to disassemble and install the long rectangular box 41 and the short rectangular box 51.

[0031] In this embodiment, the mesh count of the long filter cloth 42 and the short filter cloth 52 is one of 100, 150, and 200. The filter cloth of this specification can improve the dust prevention effect.

[0032] In this embodiment, the aperture diameter of the side ventilation holes 7 is smaller than that of the bottom ventilation holes 6. This kind of setting helps the air flow to frequently enter and exit the long rectangular box 41 and the short rectangular box 51.

[0033] When using this dust-proof housing, during normal use, the external natural air flow will enter and exit the bottom ventilation holes 6 and the side ventilation holes 7, accelerating the discharge of the heat on the heat dissipation fins 11. The dust in the air flow will be blocked outside by the long filter cloth 42 and the short filter cloth 52. When the dust on the long filter cloth 42 and the short filter cloth 52 accumulates too much and forms a blockage, during manual maintenance at this time, only need to manually pull out the long rectangular box 41 and the short rectangular box 51 through the pull rod 81, then wash and reset them. After resetting, the long rectangular box 41 and the short rectangular box 51 can continue to perform dust prevention and heat dissipation through the long filter cloth 42 and the short filter cloth 52.

[0034] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dust-proof motor housing for a three-phase asynchronous motor, comprising a cylindrical housing (1), wherein a heat dissipation fin (11) and a connection box (12) are arranged on the outer peripheral wall of the cylindrical housing (1), and it is characterized in that, An outer sleeve of the cylindrical casing (1) is provided with a sealing cylinder (2). The heat dissipation fins (11) are accommodated in the sealing cylinder (2). A heat dissipation hole located between the heat dissipation fins (11) is formed in the outer peripheral wall of the cylindrical casing (1). The adapter box (12) penetrates through the peripheral wall of the sealing cylinder (2). Long card slots (21) which are circumferentially and equally spaced are formed in the outer peripheral wall of the sealing cylinder (2), and short card slots (22) located on the left and right sides of the adapter box (12) are formed. A long dust-proof net (4) is clamped in the long card slot (21), and a short dust-proof net (5) is detachably connected in the short card slot (22).

2. The dust-proof motor housing of a three-phase asynchronous motor according to claim 1, characterized in that: Both the long card slot (21) and the short card slot (22) are rectangular. Both the long dust-proof net (4) and the short dust-proof net (5) are rectangular box-shaped, and the long dust-proof net (4) and the short dust-proof net (5) are in an outwardly convex state relative to the outer peripheral wall of the sealing cylinder (2).

3. The dust-proof motor housing of a three-phase asynchronous motor according to claim 2, characterized in that: The long dust-proof net (4) includes a long rectangular box (41) with an open bottom and a long filter cloth (42) adhered to the inner wall of the long rectangular box (41). Bottom ventilation holes (6) which are uniformly distributed are formed in the bottom wall of the long rectangular box (41) in a penetrating manner. The short dust-proof net (5) includes a short rectangular box (51) with an open bottom and a short filter cloth (52) adhered to the inner wall of the short rectangular box (51). Bottom ventilation holes (6) which are uniformly distributed are formed in the bottom wall of the short rectangular box (51) in a penetrating manner. Side ventilation holes (7) are formed in both sides of the long rectangular box (41) and the short rectangular box (51).

4. The dust-proof motor housing of a three-phase asynchronous motor according to claim 3, characterized in that: Baffles (8) are welded at both ends of the long rectangular box (41) and the short rectangular box (51). A rubber pad is adhered to the inner peripheral wall of both the long card slot (21) and the short card slot (22) in a circular shape.

5. The dust-proof motor housing of a three-phase asynchronous motor according to claim 3, characterized in that: The mesh number of the long filter cloth (42) and the short filter cloth (52) is one of 100, 150, and 200.

6. The dust-proof motor housing of a three-phase asynchronous motor according to claim 3, characterized in that: The aperture of the side ventilation hole (7) is smaller than the aperture of the bottom ventilation hole (6).

7. The dust-proof motor housing of a three-phase asynchronous motor according to claim 4, characterized in that: A pull rod (81) is welded on the front side of the baffle (8).

Images