Impeller structure of multi-wing centrifugal fan

Abstract

The utility model discloses a multi-wing centrifugal fan impeller structure, which relates to the technical field of fan impellers and comprises a shell, an impeller body is rotatably arranged on the inner surface of the shell, a fixing seat is fixedly mounted on the left side of the surface of the impeller body, and an insertion hole is formed in the left side of the surface of the fixing seat. Compared with an existing common multi-wing centrifugal fan impeller structure, the multi-wing centrifugal fan impeller structure has the advantages that the impeller body is more efficient and convenient to disassemble and assemble, the convenience of maintenance and overhaul is improved, centrifugal force can be generated when the assembly rod rotates after installation, the thrust spring can be forced to be further stretched by the centrifugal force, and the impeller body is prevented from being damaged. The movable block is further inserted into the positioning groove, at the moment, the inclined face of the movable block completely enters the positioning groove and is opposite to the edge of the positioning groove through the plane with the left side and the right side perpendicular to each other, however, the movable block cannot be pushed and contracted through the perpendicular face, and the stability in the rotating work can be guaranteed. And the situation that the assembly rod is separated from the impeller body during working is avoided.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine impeller technology, specifically a multi-blade centrifugal wind turbine impeller structure. Background Technology

[0002] Multi-blade centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas; they are a type of driven fluid machinery. Based on the principle of converting kinetic energy into potential energy, a high-speed rotating impeller accelerates the gas, then decelerates and changes its flow direction, thus converting kinetic energy into potential energy.

[0003] As disclosed in application number 202220114654.7, an impeller structure for a multi-blade centrifugal fan is described. This invention uses a compression spring to allow the mounting base to be fitted onto the rotating shaft. The spring applies force to a limiting block, causing the limiting block to extend into a limiting hole, thus limiting the mounting base. When the impeller body is mounted on the rotating shaft, a positioning pin extends into the positioning hole, reinforcing the mounting base. When the impeller body needs to be disassembled, the spring is compressed again to move the limiting block, preventing it from restricting the movement of the mounting base. This achieves the purpose of facilitating the installation and disassembly of the impeller body. However, this multi-blade centrifugal fan... When assembling or disassembling the impeller structure, a person needs to manually squeeze a lever to move the limiting block for installation or removal. This is quite inconvenient. Furthermore, as can be seen from the accompanying drawings in the publicly available prior art, the limiting block is spring-loaded onto the base connected to the impeller. When the impeller rotates, it generates centrifugal force. The high-speed rotation of the impeller causes the limiting block to compress the spring and automatically retract, which may cause the limiting block to disengage from the limiting hole and fail to provide any limiting function. In this case, the entire impeller and shaft are simply plugged in without any limiting function, which could very likely lead to the impeller rotating and falling off.

[0004] Therefore, in view of this, we studied and improved the existing structure to address its shortcomings, and proposed a multi-blade centrifugal fan impeller structure. Utility Model Content

[0005] The purpose of this invention is to provide a multi-blade centrifugal fan impeller structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-blade centrifugal fan impeller structure, including a housing, an impeller body rotatably mounted on the inner surface of the housing, a fixed seat fixedly mounted on the left side of the impeller body, an insertion hole on the left side of the fixed seat, four positioning grooves evenly distributed on the inner surface of the insertion hole, an assembly rod slidably inserted into the insertion hole, a same positioning mechanism on the right end of the surface of the assembly rod, a support seat fixedly mounted on the lower side of the outer surface of the housing, and buffer mechanisms on both the front and rear sides of the upper surface of the support seat.

[0007] Preferably, the positioning mechanism includes four gathering slots evenly distributed on the right side of the assembly rod surface. A thrust spring is fixedly installed on the inner surface of the gathering slot. A movable block is fixedly installed on the end of the thrust spring near the opening of the gathering slot. Both the left and right sides of the movable block are set as inclined surfaces.

[0008] Preferably, the buffer mechanism includes four sliding grooves evenly distributed on the front and rear sides of the upper surface of the support base. A damping spring rod is fixedly installed on the inner surface of each sliding groove at the end away from the middle of the support base. The damping spring rod is composed of a damper and a telescopic spring.

[0009] Preferably, the buffer mechanism further includes sliders that are fixedly installed at one end of the damping spring rod near the middle of the support base, with connecting rods fixedly installed on the upper surface of the sliders, and the same impact plate fixedly installed at the upper end of the left and right corresponding connecting rods. The impact plate is arc-shaped and fits the outer shell.

[0010] Preferably, a base plate is fixedly mounted on the lower surface of the support base, and a drive motor is fixedly mounted on the left side of the upper surface of the base plate.

[0011] Preferably, pulleys are installed on the right end of the drive motor and the left side surface of the mounting rod, and the pulleys are connected by a transmission belt.

[0012] Preferably, a support frame is fixedly installed in the middle of the upper surface of the substrate, and the upper end of the support frame is rotatably connected to the assembly rod by a bushing.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the arrangement of a fixed base, insertion hole, positioning groove, assembly rod, positioning mechanism, convergence groove, thrust spring, and movable block, allows for the installation of the impeller body. The insertion hole of the fixed base is aligned with the right end of the assembly rod and inserted. When the assembly rod is inserted, the inner surface of the insertion hole, using its inclined surface, pushes the movable block to retract into the convergence groove. When the movable block is flush with the positioning groove, the thrust spring pushes it into the positioning groove, thus installing the impeller body. After installation, the normal pushing force of the thrust spring ensures that the inclined surfaces on both sides of the movable block remain at the edge of the positioning groove. This allows for disassembly by pulling in the opposite direction. The impeller body can be disassembled, making the disassembly and assembly of the impeller body more efficient and convenient, and improving the convenience of maintenance and repair. After installation, when using the impeller body, the assembly rod drives the impeller body to rotate. When the assembly rod rotates, it generates centrifugal force, which forces the thrust spring to stretch further, pushing the movable block further into the positioning groove. At this time, the inclined surface of the movable block is fully inserted into the positioning groove, and it is opposite to the edge of the positioning groove using the planes that are perpendicular to both sides. However, the vertical plane prevents the movable block from pushing and retracting, thus ensuring stability during rotation and preventing the assembly rod from separating from the impeller body during operation.

[0015] 2. This utility model, through the arrangement of a buffer mechanism, sliding groove, damping spring rod, slider, connecting rod, and impact plate, allows the impeller body to vibrate during rotation. The vibration force is transmitted to the impact plate, which absorbs the vibration force and moves forward and backward. The connecting rod pushes the slider to slide forward and backward along the sliding groove, thereby squeezing the damping spring rod and buffering the vibration force. This reduces the vibration generated during operation and ensures the stability of the entire equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall front sectional view of the present invention;

[0018] Figure 3 This utility model Figure 2 A magnified structural diagram of section A;

[0019] Figure 4 This utility model Figure 1 Enlarged structural diagram at point B.

[0020] In the diagram: 1. Outer shell; 2. Impeller body; 3. Fixed base; 4. Insertion hole; 5. Positioning groove; 6. Assembly rod; 7. Positioning mechanism; 701. Converging groove; 702. Thrust spring; 703. Movable block; 8. Support base; 9. Buffer mechanism; 901. Sliding groove; 902. Damping spring rod; 903. Slider; 904. Connecting rod; 905. Impact plate; 10. Base plate; 11. Drive motor; 12. Pulley; 13. Support frame. Detailed Implementation

[0021] 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.

[0022] like Figures 1-4 As shown, a multi-blade centrifugal fan impeller structure includes a housing 1, an impeller body 2 rotatably mounted on the inner surface of the housing 1, a fixed seat 3 fixedly mounted on the left side of the impeller body 2, an insertion hole 4 opened on the left side of the fixed seat 3, four positioning grooves 5 evenly distributed on the inner surface of the insertion hole 4, an assembly rod 6 slidably inserted into the insertion hole 4, a same positioning mechanism 7 provided on the right end of the surface of the assembly rod 6, a support seat 8 fixedly mounted on the lower side of the outer surface of the housing 1, and buffer mechanisms 9 provided on the front and rear sides of the upper surface of the support seat 8.

[0023] By adopting the above technical solution, the insertion hole 4 allows the fixing seat 3 to be inserted into the assembly rod 6, thereby connecting and installing the impeller body 2 with the assembly rod 6.

[0024] Furthermore, the positioning mechanism 7 includes four gathering slots 701 evenly distributed on the right side of the surface of the assembly rod 6. A thrust spring 702 is fixedly installed on the inner surface of the gathering slot 701. A movable block 703 is fixedly installed on one end of the thrust spring 702 near the opening of the gathering slot 701. Both the left and right sides of the movable block 703 are set as inclined surfaces.

[0025] By adopting the above technical solution, when the assembly rod 6 is inserted, the inner surface of the insertion hole 4 will use the inclined surface to push the movable block 703 to retract into the gathering groove 701. When the movable block 703 is flush with the positioning groove 5, under the action of the thrust spring 702, the movable block 703 will be pushed into the positioning groove 5, so that the impeller body 2 can be installed.

[0026] After installation, the normal pushing force of the thrust spring 702 will cause the left and right sides of the movable block 703 to face the bottom end and remain at the edge of the positioning groove 5. That is, during disassembly, the impeller body 2 can be disassembled by pulling it in the opposite direction.

[0027] After installation, when using the impeller body 2, the assembly rod 6 drives the impeller body 2 to rotate. When the assembly rod 6 rotates, it generates centrifugal force, which forces the thrust spring 702 to stretch further, pushing the movable block 703 further into the positioning groove 5. At this time, the inclined surface of the movable block 703 is fully inserted into the positioning groove 5, and it is opposite to the edge of the positioning groove 5 using planes that are perpendicular to both sides. However, the vertical plane prevents the movable block 703 from being pushed and retracted, thus ensuring stability during rotation.

[0028] Furthermore, the buffer mechanism 9 includes four sliding grooves 901 evenly distributed on the front and rear sides of the upper surface of the support base 8. A damping spring rod 902 is fixedly installed on the inner surface of each sliding groove 901 at the end away from the middle of the support base 8. The damping spring rod 902 is composed of a damper and a telescopic spring. The buffer mechanism 9 also includes sliders 903 fixedly installed at the end of each damping spring rod 902 near the middle of the support base 8. A connecting rod 904 is fixedly installed on the upper surface of each slider 903, and the same impact plate 905 is fixedly installed on the upper end of the left and right corresponding connecting rods 904. The impact plate 905 is arc-shaped and fits against the outer shell 1.

[0029] By adopting the above technical solution, the impeller body 2 will cause the outer shell 1 to vibrate during rotation. The vibration force will be transmitted to the impact plate 905, which will absorb the vibration force and move forward and backward. The connecting rod 904 will push the slider 903 to slide forward and backward along the sliding groove 901, thereby squeezing the damping spring rod 902 to buffer the vibration force and thus reduce the vibration generated by the equipment during operation.

[0030] Furthermore, a base plate 10 is fixedly mounted on the lower surface of the support base 8, and a drive motor 11 is fixedly mounted on the left side of the upper surface of the base plate 10.

[0031] By adopting the above technical solution, the drive motor 11 becomes the power source for the rotation of the impeller body 2.

[0032] Furthermore, pulleys 12 are installed on the right end of the drive motor 11 and the left side surface of the mounting rod 6, and the pulleys 12 are connected by a transmission belt.

[0033] By adopting the above technical solution, the drive motor 11 uses the pulley 12 and the transmission belt to drive the assembly rod 6 to rotate, thereby causing the impeller body 2 mounted on the assembly rod 6 to rotate and work.

[0034] Furthermore, a support frame 13 is fixedly installed in the middle of the upper surface of the substrate 10, and the upper end of the support frame 13 is rotatably connected to the assembly rod 6 by means of a bushing.

[0035] By adopting the above technical solution, the support frame 13 can provide stable and firm support for the entire assembly rod 6, keep its position fixed, and not hinder the rotation of the assembly rod 6 itself.

[0036] Working Principle: When using this multi-blade centrifugal fan impeller structure, firstly, when installing the impeller body 2, align the insertion hole 4 of the fixing seat 3 with the right end of the assembly rod 6 and insert it. When the assembly rod 6 is inserted, the inner surface of the insertion hole 4 will use the inclined surface to push the movable block 703 to retract into the converging groove 701. When the movable block 703 is flush with the positioning groove 5, under the action of the thrust spring 702, it will push the movable block 703 into the positioning groove 5, thus installing the impeller body 2. At this time, the normal pushing force of the thrust spring 702 will cause the movable block 703 to retract into the positioning groove 5. The left and right inclined surfaces of the movable block 703 face the bottom end and remain at the edge of the positioning groove 5. Then, the drive motor 11 drives the lower pulley 12 to rotate. Under the traction of the transmission belt, the upper pulley 12 rotates synchronously, driving the assembly rod 6 to rotate, which in turn drives the impeller body 2 to work. When the assembly rod 6 rotates, it generates centrifugal force, which forces the thrust spring 702 to stretch further, pushing the movable block 703 further into the positioning groove 5. At this time, the inclined surface of the movable block 703 is completely inserted into the positioning groove 5, and is aligned with the edge of the positioning groove 5. The impeller body 2 is constructed by utilizing the vertical planes on both sides. However, the vertical planes prevent the movable block 703 from being pushed and retracted, thus ensuring stability during rotation and preventing the assembly rod 6 from detaching from the impeller body 2 during operation. During rotation, the impeller body 2 causes the outer casing 1 to vibrate. This vibration is transmitted to the impact plate 905, which absorbs the vibration and moves forward and backward. The connecting rod 904 pushes the slider 903 to slide forward and backward along the sliding groove 901, thereby compressing the damping spring rod 902 and buffering the vibration. This reduces the vibration generated during operation. After operation, the impeller body 2 and the assembly rod 6 stop rotating. At this time, the thrust spring 702 loses the centrifugal force and retracts to its maximum elastic position, pulling the movable block 703 back to face the edge of the positioning groove 5. In other words, during disassembly, the impeller body 2 can be disassembled by pulling it in the opposite direction. This makes the disassembly and assembly of the impeller body 2 more efficient and convenient. This is the working principle of the impeller structure of the multi-blade centrifugal fan.

Claims

1. A multi-blade centrifugal fan impeller structure, comprising a housing (1), characterized in that, An impeller body (2) is rotatably mounted on the inner surface of the outer shell (1). A fixing seat (3) is fixedly installed on the left side of the surface of the impeller body (2). An insertion hole (4) is opened on the left side of the surface of the fixing seat (3). Four positioning grooves (5) are evenly distributed on the inner surface of the insertion hole (4). An assembly rod (6) is slidably inserted into the inside of the insertion hole (4). The same positioning mechanism (7) is provided on the right end of the surface of the assembly rod (6). A support seat (8) is fixedly mounted on the lower side of the outer surface of the outer shell (1). A buffer mechanism (9) is provided on both the front and rear sides of the upper surface of the support seat (8).

2. The multi-blade centrifugal fan impeller structure according to claim 1, characterized in that, The positioning mechanism (7) includes four gathering slots (701) evenly distributed on the right side of the surface of the assembly rod (6). A thrust spring (702) is fixedly installed on the inner surface of the gathering slot (701). A movable block (703) is fixedly installed on one end of the thrust spring (702) near the opening of the gathering slot (701). The left and right sides of the movable block (703) are both set as inclined surfaces.

3. The multi-blade centrifugal fan impeller structure according to claim 1, characterized in that, The buffer mechanism (9) includes four sliding grooves (901) evenly distributed on the front and back sides of the upper surface of the support base (8). A damping spring rod (902) is fixedly installed on the inner surface of each sliding groove (901) away from the middle of the support base (8). The damping spring rod (902) is composed of a damper and a telescopic spring.

4. The multi-blade centrifugal fan impeller structure according to claim 1, characterized in that, The buffer mechanism (9) also includes a slider (903) that is fixedly installed at one end of the damping spring rod (902) near the middle of the support base (8). A connecting rod (904) is fixedly installed on the upper surface of the slider (903), and the same impact plate (905) is fixedly installed on the upper end of the left and right corresponding connecting rods (904). The impact plate (905) is arc-shaped and fits against the outer shell (1).

5. The multi-blade centrifugal fan impeller structure according to claim 1, characterized in that, A base plate (10) is fixedly mounted on the lower surface of the support base (8), and a drive motor (11) is fixedly mounted on the left side of the upper surface of the base plate (10).

6. The multi-blade centrifugal fan impeller structure according to claim 5, characterized in that, The right end of the drive motor (11) and the left side surface of the mounting rod (6) are both equipped with pulleys (12), and the pulleys (12) are connected by a transmission belt.

7. The multi-blade centrifugal fan impeller structure according to claim 5, characterized in that, A support frame (13) is fixedly installed in the middle of the upper surface of the substrate (10), and the upper end of the support frame (13) is rotatably connected to the assembly rod (6) by means of a bushing.

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