A plastic master batch processing centrifugal fan with easy maintenance

Abstract

This application relates to the field of centrifugal fan technology and discloses a centrifugal fan for easy maintenance in plastic masterbatch processing. It includes a base, a motor mounted on the top outer wall of the base, and a housing fixedly connected to one side outer wall of the base. The output shaft of the motor passes through the housing and is fixedly connected to a rotor. A cover plate is mounted on the outer wall of the housing via a quick-release mechanism. The quick-release mechanism includes a fixing frame, a fixing plate, and a buckle. The fixing frame is sleeved on the cover plate and the outer wall of the housing. Two sliding grooves are formed on the outer wall of the fixing frame, and two sliders are slidably connected to the inner wall of the grooves. In this invention, during disassembly, rotating the handle drives the gear and rack transmission, causing the buckle to disengage from the locking hole. Simultaneously, the spring is squeezed to release the tension. Under this dual action, the fixing frame is easily disassembled, and the cover plate is then separated. The entire maintenance process requires no complex tools or cumbersome steps, significantly shortening maintenance time and improving maintenance efficiency, effectively solving the problem of time-consuming and labor-intensive maintenance of traditional fans.

Description

Technical Field

[0001] This application relates to the field of centrifugal fan technology, and in particular to a centrifugal fan for easy maintenance in plastic masterbatch processing. Background Technology

[0002] In the process of plastic masterbatch processing, centrifugal fans are widely used in workshops for ventilation, cooling, and removal of waste gas and dust generated during production, playing an important role in ensuring the normal operation of the production environment and equipment.

[0003] However, existing centrifugal fans used for plastic masterbatch processing have many inconveniences during use. Due to the large amount of dust and impurities in the plastic masterbatch processing environment, the fan's filter screen and internal fan blades are prone to accumulating a large amount of dust and impurities. This not only affects the ventilation efficiency of the fan but may also lead to fan malfunction. However, the maintenance and cleaning of existing centrifugal fans requires the use of various tools to disassemble multiple parts of the fan, which is a cumbersome process that consumes a lot of time and manpower, greatly reducing maintenance efficiency and increasing maintenance costs. Therefore, a centrifugal fan for plastic masterbatch processing that is easy to maintain is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a centrifugal fan for plastic masterbatch processing that is easy to maintain, so as to solve the problems mentioned in the background art.

[0005] The centrifugal fan for easy maintenance in plastic masterbatch processing provided in this application adopts the following technical solution:

[0006] A centrifugal fan for easy maintenance in plastic masterbatch processing includes a base, a motor mounted on the top outer wall of the base, a housing fixedly connected to one side outer wall of the base, a rotor fixedly connected to the end of the output shaft of the motor through the housing, and a cover plate installed on the outer wall of the housing via a quick-release mechanism.

[0007] The quick-release mechanism includes a fixed frame, a fixed plate, and buckles. The fixed frame is sleeved on the outer wall of the cover plate and the outer shell. Two sliding grooves are opened on the outer wall of the fixed frame. Two sliders are slidably connected to the inner wall of the sliding grooves. The two buckles are respectively fixedly connected to the outer walls of the two sliders. A return spring is also installed between the two sliders. The two fixed plates are symmetrically welded to the outer wall of the outer shell.

[0008] Preferably, the outer wall of the fixing plate has two locking holes, and the buckle engages with the corresponding locking holes.

[0009] Preferably, the inner wall of the slide groove is further fixedly connected to two slide rods, the slide rods passing through the two sliders, and the return spring is sleeved on the outer wall of the slide rod.

[0010] Preferably, the outer wall of the fixed frame is fixedly connected to two fixed brackets, and the inner wall of the fixed bracket is rotatably connected to a gear via a rotating shaft. The end of the rotating shaft away from the gear passes through the fixed bracket and is fixedly connected to a handle.

[0011] Preferably, a rack is welded to the outer wall of each pair of sliders on the side opposite to the buckle, and both racks mesh with gears.

[0012] Preferably, the outer wall of the fixing plate is slidably connected to two connecting rods, one end of the two connecting rods facing the fixing frame passes through the fixing plate and is fixedly connected to a push plate, the push plate being in contact with the fixing frame.

[0013] Preferably, a compression spring is also sleeved on the outer wall of the connecting rod, one end of which is fixedly connected to the outer wall of the fixing plate, and the other end is fixedly connected to the handle at the end of the connecting rod.

[0014] Preferably, the inner wall of the outer shell is fixedly connected with multiple limiting rings, and the outer wall of the cover plate facing the outer shell is welded with multiple limiting rods, and the limiting rods are inserted into the limiting rings in a corresponding manner.

[0015] Preferably, the outer wall of the cover plate is provided with an air inlet, which corresponds to the rotor, and the outer wall of the outer shell and the cover plate is provided with an air outlet along the tangential direction, and the fixing frame is located on the outer periphery of the air outlet.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] With its quick-release mechanism, during installation, the cover plate is initially positioned using the limiting rods and rings of the outer casing. Then, through the cooperation of components such as the fixing frame, buckles, and push plates, installation can be completed quickly without additional tools. During disassembly, turning the handle drives the gear and rack transmission, causing the buckles to disengage from the locking holes. At the same time, the spring is squeezed to release the tension. Under the dual action, the fixing frame is easily disassembled, and then the cover plate is separated. The entire maintenance process requires no complicated tools or cumbersome steps, greatly shortening maintenance time and significantly improving maintenance efficiency. It effectively solves the problem of time-consuming and labor-intensive maintenance of traditional ventilators. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of an embodiment of the application;

[0019] Figure 2 This is an exploded view of an embodiment of the application;

[0020] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 4This is a schematic diagram of the cover plate in the embodiment of the application;

[0022] Figure 5 This is an exploded view of the fixed frame in the application embodiment;

[0023] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point B.

[0024] Explanation of reference numerals in the attached diagram: 1. Base; 2. Motor; 3. Housing; 4. Rotor; 5. Cover plate; 6. Limiting ring; 7. Limiting rod; 8. Air inlet; 9. Air outlet; 10. Fixing plate; 11. Clip hole; 12. Connecting rod; 13. Compression spring; 14. Push plate; 15. Fixing frame; 16. Slide groove; 17. Slider; 18. Buckle; 19. Slide rod; 20. Return spring; 21. Fixing bracket; 22. Gear; 23. Handle; 24. Rack. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0026] This application discloses a maintenance-friendly centrifugal fan for plastic masterbatch processing. (See also...) Figure 1-6 A centrifugal fan for easy maintenance in plastic masterbatch processing includes a base 1, a motor 2, a housing 3, a rotor 4, a cover plate 5, and a quick-release mechanism.

[0027] The base 1 serves as the basic support component of the entire ventilator. A shock-absorbing rubber pad (not shown in the figure) is bonded to the bottom of the base 1. The bottom of the rubber pad has anti-slip texture, which can effectively reduce the vibration and noise of the ventilator during operation and prevent the ventilator from shifting during operation. The motor 2 is fixedly installed on the top outer wall of the base 1 by bolts. The outer shell 3 is fixedly connected to one side outer wall of the base 1 by welding. The end of the output shaft of the motor 2 passes through the pre-set through hole of the outer shell 3 and is fixedly connected to the rotor 4 by key connection, thereby realizing the driving of the rotor 4 by the motor 2.

[0028] Multiple sets of limiting rings 6 are welded to the inner wall of the outer shell 3. Each set of limiting rings 6 is evenly distributed along the circumference. Multiple sets of limiting rods 7 are welded to the outer wall of the cover plate 5 facing the outer shell 3. Each set of limiting rods 7 is also evenly distributed along the circumference, and the positions of the limiting rods 7 and the limiting rings 6 correspond one-to-one. When installing the cover plate 5, the limiting rods 7 can be inserted into the limiting rings 6 to play a preliminary positioning role. An air inlet 8 is opened on the middle outer wall of the cover plate 5. The air inlet 8 corresponds to the position of the rotor 4 and is used to draw in air. An air outlet 9 is opened on the outer wall of the outer shell 3 and the cover plate 5 along the tangential direction to discharge the air accelerated by the rotor 4.

[0029] The quick-release mechanism is a key structure for the easy maintenance of this ventilator. It is mainly composed of components such as a fixed frame 15, a fixed plate 10, and a buckle 18. The fixed frame 15 is rectangular in shape and is sleeved on the outer walls of the cover plate 5 and the outer shell 3, located on the outer periphery of the air outlet 9. Two sliding grooves 16 are symmetrically opened on the outer wall of the fixed frame 15. Two sliders 17 are slidably connected to the inner walls of the sliding grooves 16. A buckle 18 is fixedly connected to the outer wall of each slider 17. A return spring 20 is installed between the two sliders 17. Specifically, two slide rods 19 are also fixedly connected to the inner walls of the sliding grooves 16. The slide rods 19 penetrate through the two sliders 17, and the return spring 20 is sleeved on the outer walls of the slide rods 19. In the natural state, the return spring 20 is in a compressed state, causing the buckle 18 to maintain an outward pre-tightening force.

[0030] Two fixed plates 10 are symmetrically welded to the outer wall of the outer shell 3. Two card holes 11 are opened on the outer wall of the fixed plate 10. The positions of the card holes 11 correspond to those of the buckles 18, which are used to achieve the snap-fitting and fixing of the buckles 18. At the same time, two connecting rods 12 are also slidably connected to the outer wall of the fixed plate 10. One end of the two connecting rods 12 facing the fixed frame 15 penetrates through the fixed plate 10 and is fixedly connected to a push plate 14. The push plate 14 is in contact with the fixed frame 15. An extrusion spring 13 is sleeved on the outer wall of the connecting rod 12. One end of the extrusion spring 13 is fixedly connected to the outer wall of the fixed plate 10, and the other end is fixedly connected to the grip at the end of the connecting rod 12. The extrusion spring 13 can apply a pressure to the push plate 14 in the direction of the fixed frame 15, facilitating the auxiliary detachment during the disassembly of the fixed frame 15.

[0031] In addition, two fixing brackets 21 are fixedly connected to the outer wall of the fixed frame 15 by welding. The fixing brackets 21 are bent from stainless steel plates and are in a "C" - shaped structure. Its horizontal section is fixed to the fixed frame 15 by countersunk screws, and the inner wall of the vertical section is rotatably connected to a rotating shaft through a bearing. The rotating shaft is machined by turning from steel and its surface is quenched to enhance wear resistance. One end of it is connected to a gear 22 by a flat key to ensure synchronous rotation. The other end penetrates through the vertical section of the fixing bracket 21 and extends to the outside, and a handle 23 is fixed by threaded connection. The handle 23 is injection - molded from engineering plastics and has anti - slip patterns on its surface, which is convenient for the operator to hold.

[0032] On the outer walls of the sides of each two sliders 17 facing away from the buckles 18, racks 24 are fixedly welded. The racks 24 are made of alloy steel and are subjected to carburizing and quenching treatments. The tooth profile of the racks 24 is a standard involute tooth profile. The two racks 24 are respectively meshed with the gear 22. When the handle 23 is rotated, the gear 22 rotates under the drive of the rotating shaft. Through the meshing transmission with the racks 24, the rotational motion is converted into the linear sliding of the sliders 17 in the sliding grooves 16, thereby realizing the separation or snap - fitting of the buckles 18 and the card holes 11, achieving the purpose of quickly disassembling and assembling the cover plate 5.

[0033] The implementation principle of a centrifugal fan for easy maintenance in plastic masterbatch processing according to an embodiment of this application is as follows: First, align the cover plate 5 with the outer shell 3 so that multiple limiting rods 7 on the cover plate 5 are accurately inserted into the corresponding multiple limiting rings 6 on the inner wall of the outer shell 3. The cooperation between the limiting rods 7 and the limiting rings 6 plays a preliminary positioning role, which can quickly determine the installation position of the cover plate 5 and lay the foundation for subsequent operations.

[0034] After the cover plate 5 and the outer shell 3 are initially positioned, the outer walls of the two together form the air outlet 9 along the tangential direction. At this time, the fixing frame 15 is fitted onto the outer periphery of the air outlet 9. During the fitting process, the fixing frame 15 will fit and press against the two push plates 14. As the fixing frame 15 is fitted deeper, its pressure on the push plates 14 causes the push plates 14 to drive the connecting rod 12 to slide on the inner wall of the fixing plate 10. The handle at the end of the connecting rod 12 moves accordingly, thereby pulling the compression spring 13, so that the compression spring 13 is continuously compressed and accumulates tension. This accumulated tension will play an auxiliary role when the fixing frame 15 is disassembled later.

[0035] As the fixed frame 15 continues to be pushed, the latches 18 on the fixed frame 15 gradually approach the latch holes 11 on the fixed plate 10. Since the ends of the latches 18 are beveled, when the latches 18 contact the latch holes 11, the inner wall of the latch holes 11 exerts a force on the beveled surfaces of the latches 18, causing the two latches 18 to approach each other under the action of the opposing beveled surfaces. The approach of the latches 18 drives the connected sliders 17 to move synchronously, thereby squeezing the return springs 20 between the sliders 17, causing the return springs 20 to generate elastic force. When the buckle 18 is fully inserted into the buckle hole 11, the inner wall of the buckle hole 11 no longer abuts against the inclined surface of the buckle 18. At this time, the elastic force of the return spring 20 drives the slider 17 to move the buckles 18 away from each other until the two buckles 18 are tightly fitted with the outer wall parallel to the fixing plate 10, thereby firmly locking the buckles 18 in the buckle hole 11 and completing the locking of the fixing frame 15. After the fixing frame 15 is locked, the cover plate 5 is firmly installed on the outer shell 3 and cannot be easily disassembled. The entire installation process of the ventilator is thus successfully completed.

[0036] When the ventilator needs to be disassembled for maintenance, the key is to release the lock of the fixed frame 15 through the quick-release mechanism, thereby separating the cover plate 5 from the outer shell 3. The first step of the disassembly operation is to rotate the handle 23 in the quick-release mechanism. The handle 23 is fixedly connected to the rotating shaft. Rotating the handle 23 will drive the rotating shaft to rotate synchronously. The rotating shaft drives the gear 22 to rotate through the flat key connection. Since the gear 22 and the rack 24 mesh with each other, the rotational motion of the gear 22 is converted into the linear motion of the rack 24. The slider 17, which is welded and fixed to the rack 24, slides in the groove 16 of the fixed frame 15 under the drive of the rack 24, so that the buckle 18 connected to it gradually exits from the buckle hole 11 of the fixed plate 10. During the exit of the buckle 18, since the return spring 20 is already in the elastic state during installation, the buckle 18 is tightly attached to the inner wall of the buckle hole 11. Therefore, when the slider 17 drives the buckle 18 to exit, the return spring 20 will be further compressed, continuously accumulating elastic potential energy, which is convenient for the subsequent reset of the two buckles 18 for the next installation.

[0037] As the handle 23 is turned to disengage the buckle 18 from the slot 11, the compression spring 13, which has accumulated tension during installation, gradually releases the tension. The tension released by the compression spring 13 acts on the push plate 14, causing the push plate 14 to exert an outward pushing force on the fixed frame 15. Under the dual action of the gear 22 and rack 24 transmission mechanism driving the buckle 18 to unlock and the compression spring 13 exerting a pushing force on the fixed frame 15, the fixed frame 15 can be easily removed from the outer periphery of the air outlet 9.

[0038] When the fixing frame 15 is removed, the cover plate 5 loses the constraint of the fixing frame 15. Since the limiting rod 7 on the cover plate 5 is only inserted into the limiting ring 6 on the inner wall of the outer shell 3 for initial positioning during installation, without any other fixing measures, the limiting rod 7 can be disengaged from the limiting ring 6 by using the handle on the cover plate 5, and the cover plate 5 can be removed from the outer shell 3, so that the rotor 4 and other components inside the fan can be cleaned and maintained.

[0039] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0040] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0041] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic master batch processing easy maintenance centrifugal fan comprising a base (1), characterized in that: A motor (2) is installed on the top outer wall of the base (1), and a housing (3) is fixedly connected to one side outer wall of the base (1). The output shaft of the motor (2) passes through the housing (3) and is fixedly connected to a rotor (4). A cover plate (5) is installed on the outer wall of the housing (3) through a quick-release mechanism. The quick-release mechanism includes a fixed frame (15), a fixed plate (10), and a buckle (18). The fixed frame (15) is sleeved on the outer wall of the cover plate (5) and the outer shell (3). Two sliding grooves (16) are opened on the outer wall of the fixed frame (15). Two sliders (17) are slidably connected to the inner wall of the sliding groove (16). The two buckles (18) are respectively fixedly connected to the outer wall of the two sliders (17). A return spring (20) is also installed between the two sliders (17). The two fixed plates (10) are symmetrically welded to the outer wall of the outer shell (3).

2. A plastic master batch processing centrifugal fan with easy maintenance according to claim 1, characterized in that: The outer wall of the fixing plate (10) has two locking holes (11), and the buckle (18) is engaged with the locking holes (11).

3. A centrifugal fan for easy maintenance in plastic masterbatch processing according to claim 2, characterized in that: The inner wall of the groove (16) is also fixedly connected to two slide rods (19), which pass through the two sliders (17), and the return spring (20) is sleeved on the outer wall of the slide rod (19).

4. A centrifugal fan for easy maintenance in plastic masterbatch processing according to claim 3, characterized in that: The outer wall of the fixed frame (15) is fixedly connected to two fixed brackets (21). The inner wall of the fixed bracket (21) is rotatably connected to a gear (22) via a rotating shaft. The end of the rotating shaft away from the gear (22) passes through the fixed bracket (21) and is fixedly connected to a handle (23).

5. A plastic master batch processing centrifugal fan with easy maintenance according to claim 4, characterized in that: Each pair of sliders (17) has a rack (24) welded to the outer wall of the side opposite to the buckle (18), and both racks (24) mesh with the gear (22).

6. A plastic master batch processing centrifugal fan with easy maintenance according to claim 1, characterized in that: Two connecting rods (12) are slidably connected to the outer wall of the fixed plate (10). One end of the two connecting rods (12) facing the fixed frame (15) passes through the fixed plate (10) and is fixedly connected to a push plate (14). The push plate (14) is in contact with the fixed frame (15).

7. A plastic master batch processing centrifugal fan with easy maintenance according to claim 6, characterized in that: A compression spring (13) is also sleeved on the outer wall of the connecting rod (12). One end of the compression spring (13) is fixedly connected to the outer wall of the fixing plate (10), and the other end is fixedly connected to the handle at the end of the connecting rod (12).

8. A plastic master batch processing centrifugal fan with easy maintenance according to claim 1, characterized in that: The inner wall of the outer shell (3) is fixedly connected with multiple limiting rings (6), and the outer wall of the cover plate (5) facing the outer shell (3) is welded with multiple limiting rods (7), and the limiting rods (7) are inserted into the limiting rings (6) respectively.

9. A plastic master batch processing centrifugal fan with easy maintenance according to claim 1, characterized in that: An air inlet (8) is provided on the middle outer wall of the cover plate (5), which corresponds to the rotor (4). An air outlet (9) is provided on the outer wall of the outer shell (3) and the cover plate (5) along the tangential direction. The fixing frame (15) is located on the outer periphery of the air outlet (9).

Images