Explosion-proof three-phase asynchronous motor

Abstract

The utility model provides an explosion-proof three-phase asynchronous motor, which comprises a shell, an air outlet formed in the outer wall of the left side of the shell, a positioning groove formed in the inner wall of the air outlet, a clamping groove formed in the inner wall of the positioning groove, a clamping plate spring fixedly connected to the inner wall of the positioning groove, a clamping plate fixedly connected to the other end of the clamping plate spring, and a fan cover installed in the air outlet. A positioning plate is fixedly connected to the outer wall of the fan cover, the positioning plate is located in the clamping groove, a fixing ring is fixedly connected to the outer wall of the fan cover, a pressing plate spring is fixedly connected to the inner wall of the fixing ring, the other end of the pressing plate spring is connected with a pressing plate, and a threaded hole is formed in the fixing ring; pressing plate bolts are in threaded connection with the interiors of the threaded holes. Under the action of the fan cover and the filter screen, dust is prevented from entering the shell to cause explosion or deflagration, the safety coefficient of the motor is improved, the filter screen is quickly disassembled, assembled and cleaned, the operation is simple, and time and labor are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of three-phase asynchronous motors, and more specifically, relates to a flameproof three-phase asynchronous motor. Background Art

[0002] An explosion-proof motor is a motor that can operate in flammable and explosive environments. The casing of this type of motor is not completely sealed, and explosive mixtures can enter the motor through the gaps between the motor components and cause an explosion, but the explosion inside the casing will not cause an explosion in the external environment.

[0003] Flameproof three-phase asynchronous motors are usually used in working environments containing dust. In dusty environments, dust will enter the interior of the casing along the wind hood and react with the electric sparks generated in the casing to cause explosion and deflagration. There is also a filter installed on the inner wall of the casing close to the fan to filter the dust. However, when too much dust adheres to the filter, the filter needs to be cleaned. Since the filter is on the inner wall of the casing, it is inconvenient to clean the filter. Utility Model Content

[0004] The purpose of the utility model is to provide a flameproof three-phase asynchronous motor, which has the function of isolating dust from entering the interior of the shell. At the same time, when too much dust adheres to the filter, the filter can be easily removed for cleaning, and the process is simple.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a flameproof three-phase asynchronous motor is provided, comprising a shell, an air outlet is provided on the left outer wall of the shell, a positioning groove is provided on the inner wall of the air outlet, and the number of the positioning grooves is multiple, the inner walls of the multiple positioning grooves are provided with a card slot, the inner walls of the multiple positioning grooves are fixedly connected with a card plate spring, and the number of the card plate springs is multiple, the other ends of the multiple card plate springs are fixedly connected with a card plate, an air hood is installed inside the air outlet, a filter groove is provided on the top of the air hood, a filter is installed inside the filter groove, the outer wall of the air hood is fixedly connected with a positioning plate, and the number of the positioning plates is multiple, the multiple positioning plates are respectively located inside the multiple card slots, the outer wall of the air hood is fixedly connected with a fixing ring, the inner wall of the fixing ring is fixedly connected with a pressure plate spring, and the number of the pressure plate springs is multiple, the other ends of the multiple pressure plate springs are connected to a pressure plate, the interior of the fixing ring is provided with a threaded hole, and the number of the threaded holes is multiple, and the interiors of the multiple threaded holes are threadedly connected with a pressure plate bolt.

[0006] Optionally, the positioning slot and the clamping slot are combined to form a U shape, a sealing gasket is installed on the fitting surface between the pressure plate and the right outer wall of the shell, and the pressure plate bolt is located inside the pressure plate spring.

[0007] Optionally, an end cover is provided on the right outer wall of the shell, and the end cover is connected to the right outer wall of the shell by end cover bolts, and there are multiple end cover bolts, and a through hole is opened inside the end cover.

[0008] Optionally, a rotating shaft is installed inside the through hole, the right end of the rotating shaft is located outside the end cover, the outer wall of the rotating shaft is fixedly connected to the rotor, and the inner wall of the shell is fixedly connected to the stator.

[0009] Optionally, a mounting groove is formed at one end of the rotating shaft located inside the housing, a fan seat is threadedly connected to an inner wall of the mounting groove, and a fan is fixedly connected to the other end of the fan seat.

[0010] Optionally, the outer wall of the shell is fixedly connected to a heat sink, and the number of heat sinks is multiple, the top of the shell is fixedly connected to a wiring harness box, the bottom of the shell is fixedly connected to a base, and the interior of the base is provided with a fixing hole, and the number of fixing holes is multiple.

[0011] Beneficial effects of the utility model:

[0012] The utility model provides an air outlet on the left outer wall of the shell, an air hood is installed at the air outlet, and a filter is installed inside the air hood. It can prevent dust from entering the shell through the air hood and contacting with electric sparks to cause explosion, thereby playing a role of explosion isolation and improving the safety factor of the motor during operation. When installing the air hood, the outer wall of the air hood is connected to multiple positioning plates corresponding to the multiple positioning grooves opened on the inner wall of the air outlet. After the multiple positioning plates are completely entered into the positioning grooves, the clamping plate is squeezed, and the multiple pressure plate springs are in a compressed state. During the installation of the air hood, the pressure plate contacts the left outer wall of the shell, and at the same time When the filter is closed, the pressure plate is squeezed, so that the multiple pressure plate springs are in a compressed state, and then the wind cover is rotated clockwise to drive the multiple positioning plates to rotate to the slot position opened on the inner wall of the positioning slot, and then the wind cover is released, the card plate spring rebounds, the card plate returns to its position, and the positioning plate is pressed into the slot. At the same time, the pressure plate spring rebounds, so that the pressure plate always remains in close contact with the left outer wall of the shell, and then the multiple pressure plate bolts are rotated respectively to make one end of the pressure plate bolt press the outer wall of the pressure plate, so that the wind cover is closely fitted to the left outer wall of the shell. When the filter needs to be cleaned, the multiple pressure plate bolts are rotated in the opposite direction to make the pressure plate bolts and The pressure plate is separated, and then the hood is squeezed into the shell to make the multiple positioning plates connected to the outer wall of the hood disengage from the slots. The hood is rotated in the opposite direction according to the same principle to separate the hood from the shell. Then the filter in the hood is removed and installed into the hood after cleaning. The filter is used to filter the dust to prevent the dust from entering the shell and causing explosion or deflagration, thereby improving the safety factor of the motor. The hood and filter are easy to install, and the filter can be quickly disassembled and cleaned. The operation is simple, saving time and effort. The existing flameproof three-phase asynchronous motor is usually used in a working environment containing dust. During operation, dust will flow into the casing along the hood and react with the electric sparks generated in the casing to cause explosion and deflagration. A filter is also installed on the inner wall of the casing close to the fan to filter dust. However, when too much dust adheres to the filter, the filter needs to be cleaned. Since the filter is on the inner wall of the casing, it is inconvenient to clean the filter. This motor uses a filter to filter dust to prevent dust from entering the casing and causing explosion or deflagration, thereby improving the safety factor of the motor. In addition, the hood and filter are easy to install, and the filter can be quickly disassembled and cleaned. The operation is simple, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model from a first perspective;

[0015] Figure 2This is a schematic diagram of the positioning groove structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the wind shield structure of the present utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the pressing plate of the utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the utility model;

[0019] Figure 6 For the utility model Figure 5 A magnified schematic diagram of the structure in the middle;

[0020] Figure 7 This is a schematic diagram of the overall structure of the utility model from a second perspective.

[0021] Explanation of symbols in the figure:

[0022] 1. Casing; 2. Air outlet; 3. Positioning slot; 4. Clamping slot; 5. Clamping plate spring; 6. Clamping plate; 7. Air hood; 8. Filter slot; 9. Filter; 10. Positioning plate; 11. Fixing ring; 12. Pressure plate spring; 13. Pressure plate; 14. Threaded hole; 15. Pressure plate bolt; 16. End cover; 17. End cover bolt; 18. Through hole; 19. Rotating shaft; 20. Rotor; 21. Stator; 22. Mounting slot; 23. Fan seat; 24. Fan; 25. Heat sink; 26. Wire harness box; 27. Base. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0024] Reference Figure 1-Figure 7, a flameproof three-phase asynchronous motor provided by an embodiment of the present invention is now described. A flameproof three-phase asynchronous motor includes a shell 1, an air outlet 2 is provided on the left outer wall of the shell 1, a positioning groove 3 is provided on the inner wall of the air outlet 2, and there are multiple positioning grooves 3, the inner walls of the multiple positioning grooves 3 are provided with a card slot 4, the inner walls of the multiple positioning grooves 3 are fixedly connected with a card plate spring 5, and there are multiple card plate springs 5, the other ends of the multiple card plate springs 5 ​​are fixedly connected with a card plate 6, an air hood 7 is installed inside the air outlet 2, a filter screen groove 8 is provided on the top of the air hood 7, a filter screen 9 is installed inside the filter screen groove 8, a positioning plate 10 is fixedly connected to the outer wall of the air hood 7, and there are multiple positioning plates 10. Multiple, multiple positioning plates 10 are respectively located inside the multiple card slots 4, the outer wall of the wind hood 7 is fixedly connected with a fixing ring 11, the inner wall of the fixing ring 11 is fixedly connected with a pressure plate spring 12, and there are multiple pressure plate springs 12, the other ends of the multiple pressure plate springs 12 are connected with a pressure plate 13, the interior of the fixing ring 11 is provided with a threaded hole 14, and there are multiple threaded holes 14, the interiors of the multiple threaded holes 14 are threadedly connected with a pressure plate bolt 15, the positioning slot 3 and the card slot 4 are combined into a U shape, the pressure plate 13 and the right outer wall of the shell 1 are fitted with a sealing gasket, and the pressure plate bolt 15 is located inside the pressure plate spring 12.

[0025] An air outlet 2 is provided on the left outer wall of the shell 1, and an air hood 7 is installed at the air outlet 2. A filter screen 9 is installed inside the air hood 7 to prevent dust from entering the shell 1 through the air hood and contacting with electric sparks to cause an explosion, thereby playing a role of explosion isolation and improving the safety factor of the motor during operation. When installing the air hood 7, multiple positioning plates 10 are connected to the outer wall of the air hood 7 and correspond to the multiple positioning grooves 3 opened on the inner wall of the air outlet 2. After the multiple positioning plates 10 are fully entered into the positioning grooves 3, the clamping plate 13 is squeezed and the multiple pressure plate springs 12 are in a compressed state. In the process of installing the air hood 7, the pressure plate 13 contacts the left outer wall of the shell 1, and the pressure plate 13 is squeezed, so that the multiple pressure plate springs 12 are in a compressed state. Then, the air hood 7 is rotated clockwise to drive the multiple positioning plates 10 to rotate to the position of the clamping groove 4 opened on the inner wall of the positioning groove 3. Then, the air hood 7 is released, the clamping plate spring 5 rebounds, and the clamping plate 6 returns to its position, pressing the positioning plate 10 When the filter screen 9 needs to be cleaned, the plurality of pressure plate bolts 15 are rotated in the opposite direction to separate the pressure plate bolts 15 from the pressure plate 13, and then the fan cover 7 is squeezed into the inside of the shell 1, so that the plurality of positioning plates 10 connected to the outer wall of the fan cover 7 are disengaged from the card slot 4. The same principle is used to reversely rotate the fan cover 7 to separate the fan cover 7 from the shell 1, and then remove the filter screen 9 in the fan cover 7. After cleaning, the fan cover 7 is reinstalled, and the filter screen 9 is used to filter dust, preventing dust from entering the shell 1 and causing explosion or deflagration, thereby improving the safety factor of the motor. The fan cover 7 and the filter screen 9 are easy to install, and the filter screen can be quickly disassembled and cleaned, which is simple to operate and saves time and effort.

[0026] In another embodiment of the present invention, please refer to Figures 5 to 7 The right outer wall of the shell 1 is provided with an end cover 16, and the end cover 16 is connected to the right outer wall of the shell 1 by an end cover bolt 17, and the number of the end cover bolts 17 is multiple. A through hole 18 is opened inside the end cover 16, and a rotating shaft 19 is installed inside the through hole 18. The right end of the rotating shaft 19 is located outside the end cover 16, and the outer wall of the rotating shaft 19 is fixedly connected to the rotor 20. The inner wall of the shell 1 is fixedly connected to the stator 21. An end of the rotating shaft 19 located inside the shell 1 is opened with a mounting groove 22, and the inner wall of the mounting groove 22 is threadedly connected to a fan seat 23. The other end of the fan seat 23 is fixedly connected to a fan 24.

[0027] In another embodiment of the present invention, please refer to Figure 1 The outer wall of the shell 1 is fixedly connected with a heat sink 25, and the number of heat sinks 25 is multiple. The top of the shell 1 is fixedly connected with a wiring harness box 26, and the bottom of the shell 1 is fixedly connected with a base 27. The base 27 has a fixing hole opened inside, and the number of fixing holes is multiple.

[0028] In the description of the present invention, it should be understood that terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like 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 application 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 should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. When an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0030] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A flameproof three-phase asynchronous motor, comprising a housing (1), characterized in that: The left outer wall of the housing (1) is provided with an air outlet (2), the inner wall of the air outlet (2) is provided with a positioning groove (3), and the number of the positioning grooves (3) is multiple, the inner walls of the multiple positioning grooves (3) are provided with a clamping groove (4), the inner walls of the multiple positioning grooves (3) are fixedly connected with a clamping plate spring (5), and the number of the clamping plate springs (5) is multiple, and the other ends of the multiple clamping plate springs (5) are fixedly connected with a clamping plate (6), the interior of the air outlet (2) is provided with an air hood (7), the top of the air hood (7) is provided with a filter screen groove (8), the interior of the filter screen groove (8) is provided with a filter screen (9), and the air hood (7) The outer wall of the wind hood (7) is fixedly connected with a positioning plate (10), and there are multiple positioning plates (10), and the multiple positioning plates (10) are respectively located inside the multiple card slots (4), the outer wall of the wind hood (7) is fixedly connected with a fixing ring (11), the inner wall of the fixing ring (11) is fixedly connected with a pressure plate spring (12), and there are multiple pressure plate springs (12), and the other ends of the multiple pressure plate springs (12) are all connected to a pressure plate (13), the interior of the fixing ring (11) is provided with a threaded hole (14), and there are multiple threaded holes (14), and the interiors of the multiple threaded holes (14) are all threadedly connected with a pressure plate bolt (15).

2. The flameproof three-phase asynchronous motor according to claim 1, characterized in that: The positioning groove (3) and the clamping groove (4) are combined to form a U shape, a sealing gasket is installed on the contact surface between the pressure plate (13) and the right outer wall of the shell (1), and the pressure plate bolt (15) is located inside the pressure plate spring (12).

3. The flameproof three-phase asynchronous motor according to claim 1, characterized in that: An end cover (16) is provided on the right outer wall of the housing (1). The end cover (16) is connected to the right outer wall of the housing (1) via end cover bolts (17). There are multiple end cover bolts (17). A through hole (18) is provided inside the end cover (16).

4. The flameproof three-phase asynchronous motor according to claim 3, characterized in that: A rotating shaft (19) is installed inside the through hole (18), the right end of the rotating shaft (19) is located outside the end cover (16), the outer wall of the rotating shaft (19) is fixedly connected to the rotor (20), and the inner wall of the housing (1) is fixedly connected to the stator (21).

5. The flameproof three-phase asynchronous motor according to claim 4, characterized in that: One end of the rotating shaft (19) located inside the housing (1) is provided with a mounting groove (22), the inner wall of the mounting groove (22) is threadedly connected to a fan seat (23), and the other end of the fan seat (23) is fixedly connected to a fan (24).

6. The flameproof three-phase asynchronous motor according to claim 1, characterized in that: The outer wall of the housing (1) is fixedly connected to a heat sink (25), and the number of the heat sinks (25) is multiple. The top of the housing (1) is fixedly connected to a wiring harness box (26), and the bottom of the housing (1) is fixedly connected to a base (27). The base (27) is provided with a fixing hole inside, and the number of the fixing holes is multiple.

Images