Alternating current motor capable of adjusting working rotating speed

Abstract

The utility model relates to the technical field of AC motors, and discloses an AC motor capable of adjusting working speed, which comprises a main body, a dustproof cylinder is arranged on the surface of the rear side of the main body, the dustproof cylinder is communicated with a heat dissipation structure on the rear side of the main body, the side wall of the dustproof cylinder is hollow, a first dustproof net is fixedly mounted in the dustproof cylinder, and a second dustproof net is fixedly mounted in the dustproof cylinder. By rotating a first bidirectional threaded rod, closing of a sealing door and opening of a collecting groove are finally achieved, the problem that some existing alternating current motors capable of adjusting the working rotating speed are poor in dustproof effect is solved, a cooling fan does not blow air into a dustproof barrel when a first dustproof net is cleaned, and the dustproof effect is improved. And meanwhile, when a sealing door is opened, a collecting groove is in a closed state, the situation that dust left in the cooling fan is blown up is avoided, the situation that dust is adsorbed to the surfaces of fan blades of the cooling fan is avoided as much as possible, the working efficiency and the working effect of the cooling fan are improved, and the dustproof effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of AC motors, in particular to an AC motor with adjustable working speed. Background Art

[0002] An AC motor with adjustable operating speed is a motor that can adjust the output speed according to needs. This type of motor usually uses a variable frequency speed regulator or a voltage regulator to adjust the speed, and the motor's operating speed can be adjusted at any time according to specific needs.

[0003] After consulting the literature, it is known that the existing patent (publication number: CN220475500U) discloses an AC motor with adjustable motor speed, including a device body, the device body including a motor body, a junction box fixedly mounted on the outer surface of the motor body, and a heat dissipation window arranged on the junction box. The utility model is provided with a junction box, a junction box and a heat dissipation mechanism.

[0004] However, the above-mentioned prior art still has certain shortcomings in actual use. When its shock component shocks the dust-proof screen, the dust attached to the surface of the screen will enter the interior of the dust-proof cylinder. However, when the cooling fan is running, the dust may be blown up, causing the dust inside the dust-proof cylinder to fly around. The dust may adhere to the surface of the cooling fan blades. If it is not cleaned in time, it will affect the heat dissipation efficiency of the cooling fan and even cause the cooling fan to generate a lot of noise during operation. In addition, if the dust collection trough provided is not cleaned in time, dust will be blown up when the cooling fan is started. The practicability is low, the dust-proof effect is poor, and the normal use of the device is affected. In view of this, we propose an AC motor with adjustable working speed to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the utility model provides an AC motor with adjustable working speed, which solves the problem that some existing AC motors with adjustable working speed have poor dustproof effect.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an AC motor with adjustable working speed, comprising a main body, a dustproof cylinder body is arranged on the rear surface of the main body, the dustproof cylinder body is connected to the heat dissipation structure on the rear side of the main body, the side wall of the dustproof cylinder body is arranged to be hollow, a first dustproof net is fixedly installed inside the dustproof cylinder body, sealing grooves are arranged on the inner walls on both sides of the dustproof cylinder body, the sealing grooves extend out of the dustproof cylinder body, sealing doors are slidably connected to the inside of the two sealing grooves, a collecting groove is arranged on the bottom wall of the dustproof cylinder body, and the inside of the collecting groove is slidably connected to the inside A collecting bucket is connected, and the collecting bucket slides and extends out of the dustproof cylinder. Two first baffles are arranged inside the collecting groove. A guide groove is opened on the top wall of the dustproof cylinder. A first two-way threaded rod is rotatably connected inside the guide groove. The left end of the first two-way threaded rod rotates and penetrates into the cavity of the side wall of the dustproof cylinder. The two opposite threads of the first two-way threaded rod are threadedly sleeved with first guide plates. The first guide plate is slidably connected to the guide groove. The two first guide plates are respectively fixedly connected to the two sealing doors. A linkage assembly is arranged on the outer surface of the left end of the first two-way threaded rod.

[0009] Preferably, the linkage assembly includes a first pulley, which is sleeved on the outer surface of the first bidirectional threaded rod. A connecting shaft is rotatably connected to the inside of the side wall of the dustproof cylinder. The outer surface of the connecting shaft is also sleeved with the first pulley, and the outer surface transmission sleeves of the two first pulleys are provided with a first belt.

[0010] Preferably, a limiting through groove is provided on the inner wall of the collecting groove, the limiting through groove is communicated with the cavity of the side wall of the dustproof cylinder body, and a second bidirectional threaded rod is rotatably connected inside the limiting through groove.

[0011] Preferably, the left end of the second bidirectional threaded rod extends into the interior of the side wall of the dustproof cylinder and is rotatably connected to the cavity wall, and the two opposite threads of the second bidirectional threaded rod are both threadedly sleeved with a second guide plate, the second guide plate is slidably connected to the interior of the limiting through groove, and the second guide plate is fixedly connected to the first baffle plate.

[0012] Preferably, the left end outer surface of the second bidirectional threaded rod is sleeved with a second pulley, the outer surface of the connecting shaft is also sleeved with a second pulley, and the outer surface transmission sleeves of the two second pulleys are sleeved with a second belt.

[0013] Preferably, a ventilation groove is provided on the upper surface of the dustproof cylinder, the ventilation groove is connected to the inside of the dustproof cylinder, a limiting groove is provided on the inner wall of the ventilation groove, a second baffle plate is slidably connected inside the limiting groove, and a return spring is fixedly connected between the second baffle plate and the inner wall of the limiting groove.

[0014] Preferably, a sliding through groove is provided on the inner wall of the ventilation groove, the ventilation groove is connected with the sealing through groove through the sliding through groove, and a fixing rod is fixedly connected to the outer surface of the second shielding plate, and the fixing rod is slidably connected to the inside of the sliding through groove.

[0015] Preferably, the fixing rod extends into the interior of the sealing through groove, the upper surfaces of the two sealing doors are also provided with fixing rods, and the interior of the ventilation groove is provided with a second dustproof net.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides an AC motor with adjustable working speed, which has the following beneficial effects:

[0018] 1. The AC motor with adjustable working speed can finally close the sealing door and open the collecting slot by rotating the first bidirectional threaded rod, thereby solving the problem of poor dust prevention effect of some existing AC motors with adjustable working speed, so that the cooling fan will not blow air into the inside of the dustproof cylinder when cleaning the first dustproof net, and the dust can be cleaned through the collecting bucket after cleaning. At the same time, the collecting slot is in a closed state when the sealing door is opened, which also prevents the dust remaining inside from being blown up, and avoids the situation where the fan blade surface of the cooling fan absorbs dust as much as possible, thereby improving the working efficiency and working effect of the cooling fan and improving the dust prevention effect of the device.

[0019] 2. The AC motor with adjustable working speed can achieve sealing of the dustproof cylinder by the sealing door when cleaning the first dustproof net, and at the same time, the second baffle plate opens the ventilation slot, thereby ensuring the heat dissipation efficiency of the device when cleaning the first dustproof net.

[0020] 3. The AC motor with adjustable working speed reduces the operating steps of the staff through the setting of the linkage component, thereby improving the cleaning efficiency of the staff on the first dustproof net. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of an AC motor with adjustable working speed according to the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the dustproof cylinder of the utility model;

[0023] Figure 3 It is a schematic cross-sectional view of the top structure of the first dustproof net of the utility model;

[0024] Figure 4 This is a schematic cross-sectional view of the bottom structure of the first dustproof net of the utility model;

[0025] Figure 5 This is a schematic structural diagram of a first bidirectional threaded rod of the utility model;

[0026] Figure 6 It is a first cross-sectional schematic diagram of the ventilation slot of the utility model;

[0027] Figure 7 This is a second cross-sectional schematic diagram of the ventilation slot of the present invention.

[0028] In the figure: 1. main body; 2. dustproof cylinder; 3. first dustproof net; 4. sealing groove; 5. sealing door; 6. collecting groove; 7. first shielding plate; 8. guide groove; 9. first two-way threaded rod; 10. collecting bucket; 11. first pulley; 12. connecting shaft; 13. first belt; 14. second pulley; 15. second belt; 16. second two-way threaded rod; 17. second guide plate; 18. limiting groove; 19. ventilation groove; 20. second shielding plate; 21. sliding groove; 22. fixing rod; 23. limiting groove; 24. reset spring; 25. second dustproof net; 26. first guide plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 7The utility model provides a technical solution: an AC motor with adjustable working speed, including a main body 1, a dustproof cylinder 2 is arranged on the rear surface of the main body 1, the dustproof cylinder 2 is connected to the heat dissipation structure on the rear side of the main body 1, the main body 1 and the heat dissipation structure on the rear side of the main body 1 are both existing structures in the above-mentioned comparative example, so they are not described below, the side wall of the dustproof cylinder 2 is set to be hollow, a first dustproof net 3 is fixedly installed inside the dustproof cylinder 2, sealing grooves 4 are opened on the inner walls on both sides of the dustproof cylinder 2, the sealing grooves 4 extend out of the dustproof cylinder 2, and the insides of the two sealing grooves 4 are slidably connected with sealing doors 5, the dustproof A collecting groove 6 is provided on the bottom wall of the cylinder 2, and a collecting bucket 10 is slidably connected inside the collecting groove 6. The collecting bucket 10 slidably extends out of the dustproof cylinder 2. Two first shielding plates 7 are arranged inside the collecting groove 6. A guide groove 8 is provided on the top wall of the dustproof cylinder 2. A first bidirectional threaded rod 9 is rotatably connected inside the guide groove 8. The left end of the first bidirectional threaded rod 9 rotates and penetrates into the cavity of the side wall of the dustproof cylinder 2. The two opposite threads of the first bidirectional threaded rod 9 are threadedly sleeved with first guide plates 26. The first guide plate 26 is slidably connected to the guide groove 8. The two first guide plates 26 are fixedly connected to the two sealing doors 5 respectively. The left end outer surface of the first double-direction threaded rod 9 is provided with a linkage component. When the staff needs to shock and clean the first dustproof net 3, they first rotate the first double-direction threaded rod 9. The rotation of the first double-direction threaded rod 9 drives the two first guide plates 26 to slide inside the guide groove 8. The movement of the two first guide plates 26 drives the two sealing doors 5 to slide inside the sealing through groove 4, respectively, to finally achieve the sealing of the dustproof cylinder 2. At the same time, the rotation of the first double-direction threaded rod 9 can drive the movement of the linkage component. The movement of the linkage component can drive the two first baffle plates 7 to slide inside the collecting groove 6, thereby achieving the sealing of the dustproof cylinder 2. The collecting slot 6 is opened, and finally the sealing door 5 is closed and the collecting slot 6 is opened. The above structure solves the problem that some existing AC motors with adjustable working speed have poor dust prevention effect, so that when the first dustproof net 3 is cleaned, the cooling fan will not blow air into the inside of the dustproof cylinder 2, and the dust can be cleaned through the collecting bucket 10 after cleaning. At the same time, when the sealing door 5 is opened, the collecting slot 6 is in a closed state, which also prevents the residual dust inside from being blown up, and avoids the situation where the fan blade surface of the cooling fan adsorbs dust as much as possible, thereby improving the working efficiency and working effect of the cooling fan and improving the dust prevention effect of the device.

[0031] Furthermore, the linkage assembly includes a first pulley 11, which is sleeved on the outer surface of the first bidirectional threaded rod 9. A connecting shaft 12 is rotatably connected to the inner side wall of the dustproof cylinder 2. The outer surface of the connecting shaft 12 is also sleeved with the first pulley 11, and the outer surface transmission sleeves of the two first pulleys 11 are provided with a first belt 13.

[0032] Furthermore, a limiting groove 18 is provided on the inner wall of the collecting groove 6, and the limiting groove 18 is communicated with the cavity of the side wall of the dustproof cylinder 2. The inside of the limiting groove 18 is rotatably connected with a second bidirectional threaded rod 16. The left end of the second bidirectional threaded rod 16 extends into the inside of the side wall of the dustproof cylinder 2 and is rotatably connected to the cavity wall. The two opposite threads of the second bidirectional threaded rod 16 are both threadedly sleeved with a second guide plate 17. The second guide plate 17 is slidably connected to the inside of the limiting groove 18, and the second guide plate 17 is fixedly connected to the first shielding plate 7.

[0033] Furthermore, a second pulley 14 is sleeved on the outer surface of the left end of the second bidirectional threaded rod 16, and a second pulley 14 is also sleeved on the outer surface of the connecting shaft 12. The outer surface transmission sleeve of the two second pulleys 14 is provided with a second belt 15. The first bidirectional threaded rod 9 and the second bidirectional threaded rod 16 are the same bidirectional threaded rods, and the two bidirectional threaded rods are mirror-imaged. The rotation of the first bidirectional threaded rod 9 drives the rotation of the first pulley 11. Under the transmission of the first belt 13, the two first pulleys 11 will rotate synchronously, thereby driving the rotation of the connecting shaft 12. The rotation of the connecting shaft 12 drives the rotation of the second pulley 14. Under the transmission of the second belt 15, the two second pulleys 14 will rotate synchronously, thereby driving the rotation of the second bidirectional threaded rod 16. At this time, because the first bidirectional threaded rod 9 and the second bidirectional threaded rod 16 are mirror-imaged, when the two sealing doors 5 move toward each other, the two first baffles 7 move in the opposite direction.

[0034] Further, a ventilation groove 19 is provided on the upper surface of the dustproof cylinder 2, and the ventilation groove 19 is connected to the inside of the dustproof cylinder 2. A limiting groove 23 is provided on the inner wall of the ventilation groove 19, and a second shielding plate 20 is slidably connected inside the limiting groove 23. A sliding groove 21 is provided on the inner wall of the ventilation groove 19, and the ventilation groove 19 is connected to the sealing groove 4 through the sliding groove 21. A fixing rod 22 is fixedly connected to the outer surface of the second shielding plate 20, and the fixing rod 22 is slidably connected to the inside of the sliding groove 21, and the fixing rod 22 extends into the sealing groove 4. Inside the sealing groove 4, the upper surfaces of the two sealing doors 5 are also provided with fixing rods 22. When the sealing doors 5 move toward each other, the fixing rods 22 on the upper surfaces of the sealing doors 5 will contact the fixing rods 22 located inside the sliding groove 21, and then the sealing doors 5 continue to move, at which time the second baffle plate 20 will be driven to slide inside the limiting groove 23, and finally the sealing doors 5 will seal the dustproof cylinder 2, and the second baffle plate 20 will open the ventilation groove 19. The above structure ensures the heat dissipation efficiency of the device when the first dustproof net 3 is cleaned.

[0035] Furthermore, a second dustproof net 25 is provided inside the ventilation slot 19 , and the second dustproof net 25 is located on the lower side of the second shielding plate 20 . The second dustproof net 25 prevents dust from entering the interior of the dustproof cylinder 2 through the ventilation slot 19 .

[0036] Furthermore, a return spring 24 is fixedly connected between the second baffle plate 20 and the inner wall of the limiting groove 23. When the second baffle plate 20 no longer blocks the ventilation groove 19, the return spring 24 will shrink, and the return spring 24 will subsequently rely on its own elastic force to achieve the second baffle plate 20 reset and the ventilation groove 19 sealing.

[0037] Working principle:

[0038] When the AC motor with adjustable working speed is in use, the first bidirectional threaded rod 9 is rotated, and the rotation of the first bidirectional threaded rod 9 drives the two first guide plates 26 to slide inside the guide groove 8, and the movement of the two first guide plates 26 drives the two sealing doors 5 to slide inside the sealing through groove 4 respectively, finally realizing the sealing of the dustproof cylinder 2, and at the same time, the rotation of the first bidirectional threaded rod 9 can drive the movement of the linkage component, and the movement of the linkage component can drive the two first baffle plates 7 to slide inside the collecting groove 6, thereby realizing the opening of the collecting groove 6, and finally realizing the closing of the sealing door 5 and the opening of the collecting groove 6.

[0039] 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. An AC motor with adjustable operating speed, comprising a main body (1), characterized in that: The rear surface of the main body (1) is provided with a dustproof cylinder (2), the dustproof cylinder (2) is connected to the heat dissipation structure on the rear side of the main body (1), the side wall of the dustproof cylinder (2) is arranged to be hollow, a first dustproof net (3) is fixedly installed inside the dustproof cylinder (2), sealing grooves (4) are provided on the inner walls on both sides of the dustproof cylinder (2), the sealing grooves (4) extend out of the dustproof cylinder (2), the insides of the two sealing grooves (4) are slidably connected with sealing doors (5), the bottom wall of the dustproof cylinder (2) is provided with a collecting groove (6), the inside of the collecting groove (6) is slidably connected with a collecting bucket (10), and the collecting bucket (10) slidably extends out of the dustproof cylinder The dustproof cylinder (2) is provided with a collecting tank (6), two first shielding plates (7) are arranged inside the collecting tank (6), a guide groove (8) is opened on the top wall of the dustproof cylinder (2), a first bidirectional threaded rod (9) is rotatably connected inside the guide groove (8), the left end of the first bidirectional threaded rod (9) is rotatably penetrated into the cavity of the side wall of the dustproof cylinder (2), the first guide plates (26) are threadedly sleeved on the two opposite threads of the first bidirectional threaded rod (9), the first guide plates (26) and the guide groove (8) are slidably connected, the two first guide plates (26) are fixedly connected to the two sealing doors (5) respectively, and a linkage assembly is arranged on the outer surface of the left end of the first bidirectional threaded rod (9).

2. The AC motor with adjustable working speed according to claim 1, characterized in that: The linkage assembly comprises a first pulley (11), the first pulley (11) is sleeved on the outer surface of the first bidirectional threaded rod (9), a connecting shaft (12) is rotatably connected inside the side wall of the dustproof cylinder (2), the outer surface of the connecting shaft (12) is also sleeved with the first pulley (11), and the outer surface transmission sleeves of the two first pulleys (11) are provided with a first belt (13).

3. The AC motor with adjustable working speed according to claim 1, characterized in that: The inner wall of the collecting groove (6) is provided with a limiting groove (18), the limiting groove (18) is communicated with the cavity of the side wall of the dustproof cylinder (2), and a second bidirectional threaded rod (16) is rotatably connected inside the limiting groove (18).

4. The AC motor with adjustable working speed according to claim 3, characterized in that: The left end of the second bidirectional threaded rod (16) extends into the interior of the side wall of the dustproof cylinder (2) and is rotatably connected to the cavity wall. The two opposite threads of the second bidirectional threaded rod (16) are both threadedly sleeved with a second guide plate (17). The second guide plate (17) is slidably connected to the interior of the limiting through groove (18). The second guide plate (17) is fixedly connected to the first shielding plate (7).

5. The AC motor with adjustable working speed according to claim 4, characterized in that: The left end outer surface of the second bidirectional threaded rod (16) is sleeved with a second belt pulley (14), the outer surface of the connecting shaft (12) is also sleeved with a second belt pulley (14), and the outer surface transmission sleeves of the two second belt pulleys (14) are sleeved with a second belt (15).

6. The AC motor with adjustable working speed according to claim 4, characterized in that: The upper surface of the dustproof cylinder (2) is provided with a ventilation groove (19), the ventilation groove (19) is connected to the inside of the dustproof cylinder (2), the inner wall of the ventilation groove (19) is provided with a limiting groove (23), the inside of the limiting groove (23) is slidably connected with a second shielding plate (20), and a return spring (24) is fixedly connected between the second shielding plate (20) and the inner wall of the limiting groove (23).

7. The AC motor with adjustable working speed according to claim 6, characterized in that: The inner wall of the ventilation groove (19) is provided with a sliding groove (21), the ventilation groove (19) is connected to the sealing groove (4) via the sliding groove (21), and the outer surface of the second shielding plate (20) is fixedly connected with a fixing rod (22), and the fixing rod (22) is slidably connected to the inside of the sliding groove (21).

8. The AC motor with adjustable working speed according to claim 7, characterized in that: The fixing rod (22) extends into the interior of the sealing groove (4), the upper surfaces of the two sealing doors (5) are also provided with fixing rods (22), and the interior of the ventilation groove (19) is provided with a second dustproof net (25).

Images