A permanent magnet screw air compressor

Abstract

This utility model discloses a permanent magnet screw air compressor, including a permanent magnet screw air compressor body. A heat dissipation component is provided on the upper surface of the top cover plate, and a limit component is provided above the top cover plate. By lifting and disassembling the positioning pin, the limit frame can be moved forward and disassembled. Then, the operator can manually lift and disassemble the protective screen and filter screen for cleaning. By inserting the limit frame into the support base from front to back, and then inserting the positioning pin from top to bottom into the through hole and positioning through hole respectively, the limit frame can be positioned so that the limit frame can simultaneously block and position the protective screen and filter screen, thereby improving the ease of disassembly and assembly of the protective screen and filter screen. By installing a back sealing film and a side sealing strip respectively, the sealing between the filter screen and the support frame is improved, preventing external dust from entering the interior of the permanent magnet screw air compressor body through the gap between the filter screen and the support frame.

Description

Technical Field

[0001] This utility model relates to the technical field of permanent magnet screw air compressors, specifically a permanent magnet screw air compressor. Background Technology

[0002] The permanent magnet screw air compressor consists of two screw rotors, called the driving rotor and the driven rotor. The driving rotor is driven by an electric motor to rotate, and the driven rotor rotates along with the driving rotor. In the space between the rotors, air is continuously drawn in and compressed, and finally discharged in the form of high-pressure gas.

[0003] In the prior art, a permanent magnet variable frequency screw air compressor with the publication number "CN221299497U" isolates the interior of the air compressor from the external environment by setting a first activated carbon plate and a second activated carbon plate on both sides of the air compressor, thereby preventing external dust and other impurities from entering the air compressor and causing damage to the components.

[0004] However, the above technical solutions and existing technologies have the following drawbacks:

[0005] While the first and second activated carbon plates in this air compressor can filter and block external dust and impurities, they are installed by inserting them from front to back without any corresponding positioning structure. Since the air compressor vibrates during operation, the first and second activated carbon plates are prone to sliding forward and slipping out. Therefore, the stability of the first and second activated carbon plates needs improvement. Furthermore, many existing air compressor filter structures use screw installation, which, while ensuring stability, requires a wrench to remove and install multiple screws, making disassembly and assembly inconvenient. Utility Model Content

[0006] The purpose of this invention is to provide a permanent magnet screw air compressor to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A permanent magnet screw air compressor includes a compressor body, an inspection door, and a top cover. The inspection door is installed on the front end of the compressor body, and the top cover is installed on the upper end of the compressor body. A heat dissipation assembly is provided on the upper end of the top cover, which is used for active ventilation and cooling of the compressor body. A limit component is provided above the top cover, which facilitates the installation and removal of the filter structure in the heat dissipation assembly. The heat dissipation assembly includes a cooling fan, a protective mesh, a support frame, and a filter screen. The support frame is symmetrically and fixedly connected to the left and right ends of the compressor body, and a filter screen is inserted inside the support frame. A cooling fan is installed in the middle of the upper end of the top cover, and a protective mesh is placed on the upper end of the cooling fan.

[0009] Preferably, the limiting component includes a limiting frame, a support rod, and a support base. The upper surface of the top cover plate is symmetrically and fixedly connected to the support rods on the left and right sides. The upper end of the support rod is fixedly connected to the support base, and the limiting frame is inserted into the support base.

[0010] Preferably, the support base is concave in shape, and the upper end face of the support base is provided with an insertion through hole. A positioning pin is inserted inside the insertion through hole. The upper end face of the limiting frame is symmetrically provided with positioning through holes on the left and right sides, and the positioning through holes match the positioning pins.

[0011] Preferably, the lower end face of the protective mesh is symmetrically provided with clip heads on both the left and right sides and the front and rear sides, and the upper end face of the cooling fan is symmetrically provided with clip holes on both the left and right sides and the front and rear sides, and the clip holes match the clip heads.

[0012] Preferably, the support frame has an insertion slot inside, which matches the filter screen. The inner wall of the insertion slot has a sealing groove, and the inner wall of the support frame is fitted with a back sealing film, which is frame-shaped.

[0013] Preferably, the front and rear end faces and the lower end face of the filter screen are fitted with side sealing strips, and the side sealing strips match the sealing grooves. A disassembly groove is provided on the upper side of the left end face of the filter screen.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By lifting and removing the positioning pin, the limiting frame can be moved forward and disassembled. Then, the staff can manually lift and disassemble the protective mesh and filter screen for cleaning. By inserting the limiting frame into the support base from front to back, and then inserting the positioning pin from top to bottom into the through hole and positioning through hole respectively, the limiting frame can be positioned so that the limiting frame can simultaneously block and position the protective mesh and filter screen, thereby making the disassembly and assembly of the protective mesh and filter screen easier.

[0016] 2. By installing the back sealing film and the side sealing strip respectively, the sealing between the filter screen and the support frame is improved, preventing external dust from entering the permanent magnet screw air compressor body through the gap between the filter screen and the support frame. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a right view of the heat dissipation component and the limiting component in this utility model;

[0019] Figure 3 This is a schematic diagram of the exploded state of the heat dissipation component and the limiting component in this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0021] Figure 5 This is a structural diagram of the support frame and filter screen in this utility model.

[0022] In the diagram: 1. Permanent magnet screw air compressor body; 2. Inspection door; 3. Top cover; 4. Heat dissipation assembly; 41. Heat dissipation fan; 411. Clip hole; 42. Protective mesh disc; 421. Clip head; 43. Support frame; 431. Insertion slot; 432. Back sealing film; 433. Sealing groove; 44. Filter screen; 441. Side sealing strip; 442. Disassembly and assembly slot; 5. Limiting assembly; 51. Limiting frame; 52. Support rod; 53. Support base; 54. Positioning through hole; 55. Through hole; 56. Positioning pin. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 This utility model provides a technical solution:

[0025] Example 1:

[0026] A permanent magnet screw air compressor includes a permanent magnet screw air compressor body 1, an inspection door 2, and a top cover 3. The inspection door 2 is installed on the front end face of the permanent magnet screw air compressor body 1, and the top cover 3 is installed on the upper end face of the permanent magnet screw air compressor body 1. Both the inspection door 2 and the top cover 3 are individually detachable structures. The individually detachable inspection door 2 and the top cover 3 facilitate maintenance personnel to inspect the interior of the permanent magnet screw air compressor body 1. Since the detailed internal structure and working principle of the permanent magnet screw air compressor body 1 are relatively mature technologies in the prior art, they will not be described in detail here.

[0027] A heat dissipation component 4 is provided on the upper surface of the top cover plate 3. The heat dissipation component 4 is used to actively ventilate and cool the inside of the permanent magnet screw air compressor body 1 to avoid heat accumulation inside the permanent magnet screw air compressor body 1. A limit component 5 is provided on the top cover plate 3, and the limit component 5 makes it easier to disassemble and assemble the filter structure in the heat dissipation component 4.

[0028] The heat dissipation assembly 4 includes a heat dissipation fan 41, a protective mesh plate 42, a support frame 43, and a filter plate 44. The support frame 43 is symmetrically and fixedly connected to the left and right ends of the permanent magnet screw air compressor body 1. The support frame 43 is connected to the permanent magnet screw air compressor body 1 by welding. The support frame 43 can support and limit the filter plate 44. The filter plate 44 is inserted inside the support frame 43. The filter plate 44 is made of air filter. The filter plate 44 can filter and purify the air entering the screw air compressor body. The protective mesh plate 42 is placed on the upper end of the heat dissipation fan 41. The protective mesh plate 42 can protect the upper air outlet of the heat dissipation fan 41.

[0029] A cooling fan 41 is installed in the middle of the upper surface of the top cover plate 3, and a temperature control switch (not shown in the figure) is installed on the lower surface of the top cover plate 3. The power input terminal of the temperature control switch is electrically connected to an external fixed power supply through a wire, and the power output terminal of the temperature control switch is electrically connected to the cooling fan 41 through a wire. During use, when the internal temperature of the permanent magnet screw air compressor body 1 rises to the operating temperature value, the temperature control switch will control the cooling fan 41 to turn on and work to exhaust air. When the temperature drops to the reset temperature, it will control the cooling fan 41 to stop working, thereby controlling the cooling fan 41 to automatically turn on and off. Since the detailed internal structure and working principle of the temperature control switch and the cooling fan 41 are relatively mature technologies in the existing technology, they will not be described in detail here.

[0030] The protective mesh tray 42 has symmetrically arranged clips 421 on both the left and right sides and the front and back sides of its lower end face. The clips 421 and the protective mesh tray 42 are an integral structure. The cooling fan 41 has symmetrically arranged clip holes 411 on both the left and right sides and the front and back sides of its upper end face. The clip holes 411 match the clips 421. The matching clip holes 411 and clips 421 prevent the protective mesh tray 42 from being misaligned or shifted when placed on the upper end face of the cooling fan 41. The support frame 43 has an insertion slot 431 inside. The insertion slot 431 matches the filter screen plate 44. The insertion slot 431 prevents the filter screen plate 44, which is vertically inserted into the support frame 43, from shifting forward or backward or left and right. The inner wall of the insertion slot 431 is provided with a sealing groove 433. The inner wall of the support frame 43 is fitted with a back sealing film 432, which is frame-shaped and made of fluororubber. The frame-shaped back sealing film 432 improves the sealing between the inner wall of the filter screen plate 44 and the support frame 43. The front and rear end faces and the lower end face of the filter screen plate 44 are fitted with side sealing strips 441, which match the sealing groove 433. The side sealing strips 441 are also made of fluororubber. The matching side sealing strips 441 and the sealing groove 433 improve the sealing between the side of the filter screen plate 44 and the insertion slot 431.

[0031] The filter screen plate 44 has a disassembly and assembly slot 442 on the upper side of its left end face. The disassembly and assembly slot 442 makes it convenient for workers to lift and disassemble the filter screen plate 44 by hand. The protective mesh plate 42 has symmetrical recesses on the left and right sides of its annular side (as shown in the figure). The recesses make it convenient for workers to lift and disassemble the protective mesh plate 42 by hand.

[0032] Example 2:

[0033] Based on Embodiment 1, in this embodiment, by lifting and disassembling the positioning pin 56, the limiting frame 51 can be moved forward and disassembled. Then, the staff can manually lift and disassemble the protective mesh tray 42 and the filter screen 44 for cleaning. By inserting the limiting frame 51 into the support base 53 from front to back, and then inserting the positioning pin 56 from top to bottom into the through hole 55 and the positioning through hole 54 respectively, the limiting frame 51 can be positioned so that the limiting frame 51 can simultaneously block and position the protective mesh tray 42 and the filter screen 44, thereby making the disassembly and assembly of the protective mesh tray 42 and the filter screen 44 more convenient.

[0034] The limiting component 5 includes a limiting frame 51, a support rod 52, and a support base 53. The support rod 52 is symmetrically fixedly connected to the left and right sides of the upper end face of the top cover plate 3. The support rod 52 is connected to the support base 53 and the top cover plate 3 by welding. The support rod 52 can support and fix the support base 53. The support base 53 is fixedly connected to the upper end of the support rod 52. The support base 53 is concave in shape and matches the limiting frame 51. The concave support base 53 can support and limit the limiting frame 51.

[0035] A limiting frame 51 is inserted inside the support base 53. During use, the bottom of the limiting frame 51 will be in contact with the upper surface of the filter screen plate 44, and the upper side of its inner wall will be in contact with the upper surface of the protective screen plate 42. This allows the limiting frame 51 to simultaneously block and position the protective screen plate 42 and the filter screen plate 44, preventing them from loosening upwards during use. The upper surface of the support base 53 has an insertion through hole 55, which allows the positioning pin 56 to be vertically inserted into the upper end of the support base 53. The positioning pin 56 is inserted inside the through hole 55. The upper surface of the limiting frame 51 has symmetrical positioning through holes 54 on the left and right sides, and the positioning through holes 54 match the positioning pins 56. The positioning pins 56 inserted into the positioning through holes 54 can position the limiting frame 51 inside the support base 53, preventing the limiting frame 51 from shifting or shaking during use.

[0036] Working principle: During the use of the permanent magnet screw air compressor body 1, the temperature control switch automatically controls the switching on and off of the cooling fan 41 according to the internal temperature of the permanent magnet screw air compressor body 1. The working cooling fan 41 quickly exhausts the heat inside the permanent magnet screw air compressor body 1 to the outside. At the same time, some outside air is filtered through the filter plate 44 and drawn into the permanent magnet screw air compressor body 1, thereby actively ventilating and cooling the permanent magnet screw air compressor body 1. Furthermore, the fixedly connected support rod 52 can support the limit frame 51 through the support base 53, and the positioning pin inserted into the positioning through hole 54... 56 can position the limiting frame 51 inside the support base 53, so that the limiting frame 51 can simultaneously block and position the filter screen 44 and the protective screen tray 42, preventing the protective screen tray 42 and the filter screen 44 from loosening upwards during use; after the filter screen 44 and the filter screen tray have been used for a period of time, dust will adhere to their outer surfaces and they need to be cleaned. At this time, the staff only needs to pull and remove the positioning pins 56 on the left and right sides respectively, and then the limiting frame 51 can be moved forward and removed. Then, the protective screen tray 42 and the filter screen 44 can be lifted and removed by hand for cleaning (see reference). Figure 3 It is easy to assemble and disassemble.

[0037] It should be noted that the circuits, electronic components, and driving devices involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve improvements to the software and methods. At the same time, the power connection methods of each electrical device are existing mature technologies, which are well known to those skilled in the art, and will not be elaborated upon here.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet screw air compressor, comprising a permanent magnet screw air compressor body (1), an inspection door (2), and a top cover plate (3), characterized in that: The permanent magnet screw air compressor body (1) is equipped with an inspection door (2) on the front end face, and a top cover plate (3) is installed on the upper end face of the permanent magnet screw air compressor body (1). A heat dissipation component (4) is provided on the upper end face of the top cover plate (3), and the heat dissipation component (4) is used to actively ventilate and cool the inside of the permanent magnet screw air compressor body (1). A limit component (5) is provided above the top cover plate (3), and the limit component (5) makes it easier to disassemble and assemble the filter structure in the heat dissipation component (4). The heat dissipation component (4) includes a heat dissipation fan (41), a protective mesh disc (42), a support frame (43), and a filter screen (44). The left and right ends of the permanent magnet screw air compressor body (1) are symmetrically and fixedly connected with the support frame (43). The filter screen (44) is inserted inside the support frame (43). The heat dissipation fan (41) is installed in the middle of the upper end face of the top cover plate (3). The protective mesh disc (42) is placed on the upper end face of the heat dissipation fan (41). The limiting component (5) includes a limiting frame (51), a support rod (52) and a support seat (53). The top cover plate (3) has a support rod (52) fixedly connected to the left and right sides of the upper end face. The support rod (52) has a support seat (53) fixedly connected to the upper end. The limiting frame (51) is inserted into the support seat (53).

2. The permanent magnet screw air compressor according to claim 1, characterized in that: The support base (53) is concave in shape. The upper end face of the support base (53) is provided with an insertion through hole (55). A positioning pin (56) is inserted inside the insertion through hole (55). The upper end face of the limiting frame (51) is symmetrically provided with positioning through holes (54) on the left and right sides, and the positioning through holes (54) match the positioning pins (56).

3. A permanent magnet screw air compressor according to claim 1, characterized in that: The protective mesh (42) has symmetrically arranged clips (421) on the left and right sides and front and back sides of the lower end face, and the cooling fan (41) has symmetrically opened clip holes (411) on the left and right sides and front and back sides of the upper end face, and the clip holes (411) match the clips (421).

4. A permanent magnet screw air compressor according to claim 1, characterized in that: The support frame (43) has an insertion slot (431) inside, and the insertion slot (431) matches the filter screen (44). The inner wall of the insertion slot (431) has a sealing groove (433). The inner wall of the support frame (43) is fitted with a back sealing film (432), and the back sealing film (432) is frame-shaped.

5. A permanent magnet screw air compressor according to claim 4, characterized in that: The filter screen (44) has side sealing strips (441) on its front and rear ends and lower end, and the side sealing strips (441) match the sealing groove (433). The filter screen (44) has a disassembly and assembly slot (442) on the upper side of its left end.

Images