Centrifugal fan with shock absorption and shock resistance structure

Abstract

The utility model relates to the field of centrifugal fans with damping and anti-seismic structures, in particular to a centrifugal fan with damping and anti-seismic structures, which comprises a base, a T-shaped groove is formed in the upper surface of the base, a fan supporting plate is arranged above the base, and two first connecting blocks are fixedly connected to the bottom surface of the fan supporting plate; the inner wall of each first connecting block is rotationally connected with a connecting plate, the gravity of the centrifugal fan and the force generated by vibration when the centrifugal fan is started are transmitted to the two damping rods through the fan supporting plate and the connecting plates, in the process, the connecting plates can rotate around the first connecting blocks and the second connecting blocks at the same time, and therefore the centrifugal fan is started. According to the damping device for the centrifugal fan, a first connecting block can horizontally slide along a T-shaped groove, so that force generated at different heights in the vibration process can be decomposed and transmitted, a second connecting block can horizontally slide along the T-shaped groove, vertically-downward force can be counteracted, transmission of the force completely acts on a damping rod, and then the effect that the damping device can conduct damping on the centrifugal fan through the damping rod is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans with a shock-absorbing and anti-vibration structure, in particular to a centrifugal fan with a shock-absorbing and anti-vibration structure. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and air intake of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; the working principle of a centrifugal fan is to use a high-speed rotating impeller to accelerate and then decelerate the gas, change the flow direction, and convert kinetic energy into potential energy.

[0003] The current centrifugal fans do not have the function of shock absorption and earthquake resistance. During the startup of the centrifugal fan, the high-speed rotation of the motor will cause the fan to vibrate. When used for a long time, the continuous vibration of the fan will cause the internal bolts and parts to fall off, causing damage to the fan.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In view of the above background technology, the prior art has the problem that the fan cannot be vibrated.

[0006] The utility model discloses a centrifugal fan with a shock-absorbing and anti-seismic structure, comprising a base, an upper surface of the base being provided with a T-slot, a fan support plate being provided above the base, the bottom surface of the fan support plate being fixedly connected to two first connecting blocks, the inner wall of each of the first connecting blocks being rotatably connected to a connecting plate, an end of each of the connecting plates away from the first connecting block being rotatably connected to a second connecting block, each of the second connecting blocks being slidably connected to the inner wall of the T-slot, a damping rod being fixedly connected to one side of the two second connecting blocks away from each other, the ends of the two damping rods away from each other being fixedly connected to the base, and a fan casing being fixedly connected to the upper surface of the fan support plate.

[0007] By adopting the above scheme, the gravity of the fan casing and the gravity of the fan support plate act on the two damping rods through the two connecting plates, and through the decomposition of force, the fan casing and the support plate move vertically downward and push the corresponding two damping rods through the second connecting block. At this time, the two second connecting blocks will slide horizontally along the T-slot until the gravity and the reaction force of the damping rod are balanced. During this process, the connecting plate will rotate around the corresponding first connecting block and the second connecting block at the same time, and the connecting plate can also serve as a supporting mechanism for the fan support plate.

[0008] Optionally, four support boxes are fixedly connected to the upper surface of the base, and four sliders are fixedly connected to the outer surface of the fan support plate, and the outer surface of each slider is slidably connected to the corresponding support box.

[0009] By adopting the above scheme, the slider on the fan support plate is placed along the corresponding support box. A T-shaped slide groove is provided on the outer surface of the support box. The slider is a T-shaped block. During the process of placing the slider along the corresponding T-shaped slide groove, the slider will be in close contact with the T-shaped slide groove, and the fan support plate will be supported by the support box to prevent it from shifting.

[0010] Furthermore, the outer surface of the fan housing is fixedly connected to a motor support plate, the upper surface of the motor support plate is fixedly connected to a motor body, the output end of the motor body is fixedly connected to a connecting rod, and the outer surface of the connecting rod is rotatably connected to the fan housing.

[0011] By adopting the above solution, the motor support plate is fixed to the fan housing to form a whole, the motor body is placed on the motor support plate and fixed by bolts, and the motor body drives the connecting rod to rotate when it is started.

[0012] Furthermore, one end of the connecting rod away from the motor body is fixedly connected to a placement block, and a plurality of placement grooves are formed on the outer surface of the placement block.

[0013] By adopting the above solution, the rotation of the connecting rod will drive the placement block to rotate. The placement block is cylindrical, and the placement grooves are evenly arranged on the outer surface of the placement block.

[0014] Furthermore, a fan blade is inserted into the inner wall of each placement groove, and a fixing cover is inserted into the outer surface of the placement block.

[0015] By adopting the above scheme, the fan blade is an arc-shaped piece with one end large and the other end flat. The large end of the fan blade can be inserted along the corresponding placement groove. When the fan blade is fully inserted into the placement block, the fixing cover is inserted into the placement block to fix the position of the fan blade. The outer surface of the fixing cover is threadedly connected with bolts, and the fixing cover is fixed to the placement block by the bolts.

[0016] Furthermore, a support column is fixedly connected to the upper surface of the base, a connecting column is slidably connected to the inner wall of the support column, and the top end of the connecting column is fixedly connected to the motor support plate.

[0017] By adopting the above solution, the connecting column will move up and down following the vibration of the motor support plate, and then the connecting column will slide up and down along the support column.

[0018] Furthermore, a spring is provided inside the support column, the bottom end of the spring is fixedly connected to the base, and the top end of the spring is fixedly connected to the connecting column.

[0019] By adopting the above solution, when the motor support plate vibrates driven by the motor body, the spring will be compressed to different degrees according to the sliding of the connecting column in the support column, and then the connecting column at different positions can be supported by the spring, thereby supporting the motor support plate during operation, reducing the damage to the motor body caused by long-term continuous vibration.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0021] 1. The utility model is provided with components such as a damping rod, a T-slot, a first connecting block, a second connecting block, a connecting plate, and a fan support plate. The gravity of the centrifugal fan and the force generated by the vibration when the centrifugal fan is started are transmitted to the two damping rods through the connecting plate through the fan support plate. During this process, the connecting plate will rotate around the first connecting block and the second connecting block at the same time, so that the forces generated at different heights during the vibration process can be decomposed and transmitted. The second connecting block will slide horizontally along the T-slot, so that the vertical downward force can be offset and the force transmission can be completely applied to the damping rod, thereby achieving the effect that the device can reduce the shock of the centrifugal fan through the damping rod.

[0022] 2. The utility model provides fan blades, placement blocks, placement slots, fixed covers and other components. The fan blades are inserted along the corresponding placement slots, and then the fixed covers are inserted into the placement blocks. The fixed covers are fixed to the placement blocks with bolts, so that the fan blades can be replaced individually, thereby reducing waste of resources. The device can reduce the need for replacement of the entire fan due to damage to a single fan blade through detachable fan blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the motor body of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the connecting plate of the utility model;

[0027] Figure 4 This is a schematic diagram of the spring structure of the utility model;

[0028] Figure 5 This is a schematic diagram of the fan blade structure of the utility model.

[0029] In the figure: 1. base; 2. T-slot; 3. fan support plate; 4. first connecting block; 5. connecting plate; 6. second connecting block; 7. damping rod; 8. support box; 9. slider; 10. fan housing; 11. motor support plate; 12. motor body; 13. connecting rod; 14. placement block; 15. fan blade; 16. fixing cover; 17. support column; 18. spring; 19. connecting column; 20. placement slot. DETAILED DESCRIPTION

[0030] The following will disclose multiple embodiments of the utility model with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the utility model. In other words, in some embodiments of the utility model, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0031] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The utility model is a centrifugal fan with a shock-absorbing and anti-seismic structure, comprising a base 1, a T-shaped slot 2 is provided on the upper surface of the base 1, the T-shaped slot 2 is located on the center line of the base 1, a fan support plate 3 is provided above the base 1, and two first connecting blocks 4 are fixedly connected to the bottom surface of the fan support plate 3, and the two first connecting blocks 4 are equidistant from the center of the fan support plate 3, and the inner wall of each first connecting block 4 is rotatably connected to a connecting plate 5, and the connecting plate 5 can serve as a supporting mechanism for the fan support plate 3, and each connecting plate 5 is rotatably connected to a second connecting block 6 at one end away from the first connecting block 4, and each second connecting block 6 is slidably connected to the inner wall of the T-shaped slot 2, and the two second connecting blocks 6 are far from each other. The two sides of the fan housing 10 are fixedly connected with damping rods 7, and the ends of the two damping rods 7 that are away from each other are fixedly connected to the base 1. The upper surface of the fan support plate 3 is fixedly connected with the fan housing 10. Specifically, the gravity of the fan housing 10 and the gravity of the fan support plate 3 act on the two damping rods 7 through the two connecting plates 5, and through the decomposition of force, the fan housing 10 and the fan support plate 3 move vertically downward and push the corresponding two damping rods 7 through the second connecting block 6. At this time, the two second connecting blocks 6 will slide horizontally along the T-slot 2 until the gravity and the reaction force of the damping rod 7 are balanced. In this process, the connecting plate 5 will rotate around the corresponding first connecting block 4 and the second connecting block 6 at the same time.

[0032] like Figure 2 , Figure 3 , Figure 4As shown, four support boxes 8 are fixedly connected to the upper surface of the base 1, and a T-shaped slide groove is opened on the outer surface of the support box 8. Four sliders 9 are fixedly connected to the outer surface of the fan support plate 3. The slider 9 is a T-shaped block, and the outer surface of each slider 9 is slidably connected to the corresponding support box 8. Specifically, the slider 9 on the fan support plate 3 is placed along the corresponding support box 8. During the process of placing the slider 9 along the corresponding T-shaped slide groove, the slider 9 will be in close contact with the T-shaped slide groove, and the fan support plate 3 is supported by the support box 8 to prevent it from shifting.

[0033] In this embodiment, the outer surface of the fan housing 10 is fixedly connected to the motor support plate 11, and the upper surface of the motor support plate 11 is fixedly connected to the motor body 12. Specifically, the motor support plate 11 is fixed to the fan housing 10 and forms a whole. The motor body 12 is placed on the motor support plate 11 and fixed by bolts. The output end of the motor body 12 is fixedly connected to a connecting rod 13, and the outer surface of the connecting rod 13 is rotatably connected to the fan housing 10. When the motor body 12 is started, the connecting rod 13 will be driven to rotate, and the motor body 12 will also generate vibration when it starts.

[0034] like Figure 4 As shown, one end of the connecting rod 13 away from the motor body 12 is fixedly connected to a placement block 14, and a plurality of placement grooves 20 are provided on the outer surface of the placement block 14. The rotation of the connecting rod 13 will drive the placement block 14 to rotate. The placement block 14 is cylindrical, and the placement grooves 20 are evenly provided on the outer surface of the placement block 14.

[0035] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a fan blade 15 is inserted into the inner wall of each placement groove 20. The fan blade 15 is an arc-shaped piece with one end large and the other end flat, and the end of the fan blade 15 close to the placement block 14 is the large end. The placement groove 20 completely overlaps with the fan blade 15, and a fixing cover 16 is inserted into the outer surface of the placement block 14. A plurality of plug-in blocks are fixedly connected to the side of the fixing cover 16 close to the placement block 14. When the fixing cover 16 is inserted into the placement block 14, the plug-in blocks on the fixing cover 16 are completely inserted into the corresponding placement groove 20 and fit with the inner wall of the placement groove 20. Specifically, one end of the large end of the fan blade 15 can be inserted along the corresponding placement groove 20. When the fan blade 15 is fully inserted into the placement block 14, the fixing cover 16 is inserted into the placement block 14 to fix the position of the fan blade 15. The outer surface of the fixing cover 16 is threadedly connected with bolts, and the fixing cover 16 is fixed to the placement block 14 by the bolts.

[0036] Replay Figure 4, a support column 17 is fixedly connected to the upper surface of the base 1, and the support column 17 is an annular column. The inner wall of the support column 17 is slidably connected with a connecting column 19, and the top of the connecting column 19 is fixedly connected to the motor support plate 11. Specifically, the connecting column 19 will move up and down following the vibration of the motor support plate 11 when the motor body 12 is started, and then the connecting column 19 will slide up and down along the support column 17. In this embodiment, a spring 18 is provided inside the support column 17, and the bottom end of the spring 18 is fixedly connected to the base 1, and the top end of the spring 18 is fixedly connected to the connecting column 19. Specifically, when the motor support plate 11 vibrates under the drive of the motor body 12, the spring 18 will be compressed to different degrees according to the sliding of the connecting column 19 in the support column 17, and then the connecting columns 19 at different positions can be supported by the spring 18, and thereby the motor support plate 11 is supported during operation, thereby reducing the damage to the motor body 12 caused by long-term continuous vibration.

[0037] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A centrifugal fan with a shock-absorbing and anti-vibration structure, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a T-shaped slot (2); a fan support plate (3) is provided above the base (1); two first connection blocks (4) are fixedly connected to the bottom surface of the fan support plate (3); the inner wall of each of the first connection blocks (4) is rotatably connected to a connection plate (5); one end of each of the connection plates (5) away from the first connection block (4) is rotatably connected to a second connection block (6); each of the second connection blocks (6) is slidably connected to the inner wall of the T-shaped slot (2); a damping rod (7) is fixedly connected to the sides of the two second connection blocks (6) away from each other; the ends of the two damping rods (7) away from each other are fixedly connected to the base (1); and a fan casing (10) is fixedly connected to the upper surface of the fan support plate (3).

2. A centrifugal fan with a shock-absorbing and anti-vibration structure according to claim 1, characterized in that: Four support boxes (8) are fixedly connected to the upper surface of the base (1), and four sliders (9) are fixedly connected to the outer surface of the fan support plate (3), and the outer surface of each slider (9) is slidably connected to the corresponding support box (8).

3. The centrifugal fan with a shock-absorbing and anti-vibration structure according to claim 1, characterized in that: The outer surface of the fan housing (10) is fixedly connected to a motor support plate (11), the upper surface of the motor support plate (11) is fixedly connected to a motor body (12), the output end of the motor body (12) is fixedly connected to a connecting rod (13), and the outer surface of the connecting rod (13) is rotatably connected to the fan housing (10).

4. The centrifugal fan with a shock-absorbing and anti-vibration structure according to claim 3, characterized in that: One end of the connecting rod (13) away from the motor body (12) is fixedly connected to a placement block (14), and a plurality of placement grooves (20) are provided on the outer surface of the placement block (14).

5. The centrifugal fan with a shock-absorbing and anti-vibration structure according to claim 4, characterized in that: The inner wall of each placement groove (20) is plugged with a fan blade (15), and the outer surface of the placement block (14) is plugged with a fixing cover (16).

6. The centrifugal fan with a shock-absorbing and anti-vibration structure according to claim 2, characterized in that: The upper surface of the base (1) is fixedly connected to a support column (17), the inner wall of the support column (17) is slidably connected to a connecting column (19), and the top end of the connecting column (19) is fixedly connected to the motor support plate (11).

7. The centrifugal fan with a shock-absorbing and anti-vibration structure according to claim 6, characterized in that: A spring (18) is provided inside the support column (17); the bottom end of the spring (18) is fixedly connected to the base (1), and the top end of the spring (18) is fixedly connected to the connecting column (19).

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