Glass fiber reinforced plastic centrifugal fan

Abstract

The utility model relates to the technical field of centrifugal fans, and discloses a glass fiber reinforced plastic centrifugal fan which comprises a fan shell, an air inlet is formed in the front end of the fan shell, the inner wall of one end of the fan shell is rotationally connected with a rotating shaft, the rotating shaft is driven by a driving motor, and one end of the rotating shaft is fixedly connected with a rotating plate. One end of the rotating plate is fixedly connected with a plurality of first protruding blocks distributed in an annular array, a plurality of sliding grooves are formed in the inner wall of the air inlet, sliding blocks are slidably connected to the inner walls of the sliding grooves, vibration springs are fixedly connected between the sliding blocks and the sliding grooves, a same mounting ring is fixedly connected between the multiple sliding blocks, and a filter screen plate is arranged on the circumferential inner wall of the mounting ring. One end of the filter screen plate is fixedly connected with a fixed plate, and one end, close to the rotating plate, of the fixed plate is fixedly connected with a plurality of second bumps which are distributed in an annular array; according to the utility model, dust and sundries adhered to the filter screen plate can be shaken off, so that the probability that meshes of the filter screen plate are blocked is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, and particularly relates to a fiberglass centrifugal fan. Background Art

[0002] A centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Briefly speaking, a centrifugal fan uses a high-speed rotating impeller to accelerate the gas, and then decelerates and changes the flow direction to convert the kinetic energy into potential energy, so as to achieve functions such as ventilation, dust removal, and cooling. Many existing centrifugal fans are made of fiberglass materials. In multiple industries such as precision electronics, semiconductor industry, chemical industry, medicine, food, electroplating, electric power, steel, metallurgy, electric power environmental protection, sewage treatment, and waste gas treatment, these industries usually need to handle corrosive gases or work in a corrosive environment. The fiberglass material has the characteristics of light weight, high strength, corrosion resistance, and high temperature resistance, which is an ideal choice to meet these needs.

[0003] For example, the patent document CN215333642U discloses a centrifugal fan, belonging to the technical field of centrifugal fans, including a centrifugal fan, including a housing and an air inlet plate. An impeller for pressurizing the gas inside is installed in the housing. A first air inlet is provided on the housing on the side of the impeller. The air inlet plate is installed on the housing and matches the first air inlet; a circular installation groove is provided on the housing at the side of the first air inlet. A connecting pipe is installed in the installation groove, and a collar is provided outside the connecting pipe; a sleeve matching the inner diameter of the connecting pipe is installed on the side of the air inlet plate close to the impeller. The air inlet plate is clamped on the connecting pipe through the sleeve and the connecting pipe by interference fit. Among them, the outer diameter of the air inlet plate is larger than the outer diameter of the connecting pipe. This utility model preferably solves the problem of air leakage of the air inlet plate of the centrifugal fan and can improve the air inlet efficiency of the centrifugal fan according to the usage situation; however, there are still many deficiencies in this prior art. For example, when it is in use, it filters air and external sundries through a filter screen. However, its filter screen is usually in a static state, so it is easy to have the problem of mesh blockage and needs to be disassembled and cleaned frequently, which is rather inconvenient. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fiberglass centrifugal fan to solve the problems raised in the above background art.

[0005] To achieve the above object, the present utility model provides the following technical solution: A fiberglass centrifugal fan, including a fan housing, an air inlet is provided at the front end of the fan housing, one end inner wall of the fan housing is rotatably connected with a rotating shaft, the rotating shaft is driven by a driving motor, one end of the rotating shaft is fixedly connected with a rotating plate, one end of the rotating plate is fixedly connected with a plurality of first convex blocks distributed in a circular array, a plurality of sliding grooves are provided on the inner wall of the air inlet, a slider is slidably connected to the inner wall of the sliding groove, a vibration spring is fixedly connected between the slider and the sliding groove, the same mounting ring is fixedly connected between a plurality of the sliders, a filter screen plate is provided on the circumferential inner wall of the mounting ring, one end of the filter screen plate is fixedly connected with a fixing plate, one end of the fixing plate close to the rotating plate is fixedly connected with a plurality of second convex blocks distributed in a circular array, and both the first convex blocks and the second convex blocks are hemispherical.

[0006] As a further improvement to the above solution, two connecting plug plates are fixedly connected to one end of the mounting ring, two mounting plates are fixedly connected to the circumferential outer wall of the filter screen plate, and connecting sockets adapted to the connecting plug plates are provided at one ends of the two mounting plates.

[0007] As a further improvement to the above solution, movable grooves are provided at the top and bottom of the connecting plug plate, and limiting blocks are slidably arranged on the inner walls of the movable grooves.

[0008] As a further improvement to the above solution, a limiting spring is fixedly connected between the limiting block and the movable groove, and the surface of the limiting block away from the limiting spring is inclined.

[0009] As a further improvement to the above solution, an air outlet is provided at one side position of the top of the fan housing, and a support frame is fixedly arranged on the outer wall of the fan housing.

[0010] As a further improvement to the above solution, an inlet bell is connected to the front end of the fan housing by bolts, the inlet bell corresponds to the air inlet, and both the inlet bell and the fan housing are made of fiberglass.

[0011] As a further improvement to the above solution, the driving motor is fixedly connected to the outer wall of the rear end of the fan housing, a fixed setting is provided between the output shaft of the driving motor and the rotating shaft, and an impeller is fixedly arranged on the outer wall of the rotating shaft.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] In this utility model, a plurality of first bumps distributed in an annular array are fixedly connected to one end of a rotating plate, and a plurality of second bumps distributed in an annular array are fixedly connected to one end of a fixing plate close to the rotating plate. Both the first bumps and the second bumps are hemispherical. During operation, a driving motor drives a rotating shaft to rotate, and the rotating shaft drives the rotating plate to rotate. Since the first bumps and the second bumps are fixedly connected to the opposite sides of the rotating plate and the fixing plate respectively, during the rotation of the rotating plate, the first bumps continuously squeeze the second bumps. Under the action of a sliding block and a sliding groove, and in cooperation with the elastic force of a vibration spring, the filter screen plate is driven to vibrate, shaking off the dust and sundries adhering to the filter screen plate, effectively reducing the probability of blockage of the mesh holes of the filter screen plate, and greatly increasing the cleaning cycle of the filter screen plate by the staff.

[0014] In this utility model, two connecting plug plates are fixedly connected to one end of an installation ring, and two installation plates are fixedly connected to the circumferential outer wall of the filter screen plate. Connecting sockets adapted to the connecting plug plates are provided at one ends of the two installation plates. When the filter screen plate needs to be cleaned, the limiting block can be pressed to make the limiting block contract into the movable groove, and then the filter screen plate can be pulled out. During installation, the connecting plug plates are aligned with the connecting sockets, the connecting sockets are sleeved on the connecting plug plates, and the inclined surface of the limiting block is squeezed by the inner wall of the connecting socket, causing the limiting block to contract into the movable groove. When the limiting block passes through the connecting socket, under the elastic force of a limiting spring, the limiting block is driven to move outwards, thereby limiting the installation plate and further installing the filter screen plate, achieving the purpose of facilitating the installation and disassembly of the filter screen plate. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of this utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the first perspective of this utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the second perspective of this utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of an impeller in this utility model;

[0019] Figure 4 It is a disassembled three-dimensional structural schematic diagram of a fixing plate and a rotating plate in this utility model;

[0020] Figure 5 It is a disassembled three-dimensional structural schematic diagram of a dust-proof screen plate and an installation ring in this utility model;

[0021] Figure 6 This is the front view of the limit block and the limit spring in the present utility model;

[0022] Figure 7 This is the side view of the slider and the sliding groove in the present utility model.

[0023] In the figure: 1, fan housing; 2, support frame; 3, air outlet; 4, inlet bell; 5, filter screen plate; 6, drive motor; 7, impeller; 8, rotating shaft; 9, rotating plate; 10, fixing plate; 11, first convex block; 12, second convex block; 13, mounting ring; 14, connecting plug board; 15, mounting plate; 16, connecting socket; 17, activity groove; 18, limit block; 19, limit spring; 20, air inlet; 21, sliding groove; 22, slider; 23, vibration spring. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0025] A fiberglass centrifugal fan, as Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 shown, includes a fan housing 1. An air inlet 20 is provided at the front end of the fan housing 1. One end inner wall of the fan housing 1 is rotatably connected to a rotating shaft 8. The rotating shaft 8 is driven by a drive motor 6. One end of the rotating shaft 8 is bolted to a rotating plate 9. One end of the rotating plate 9 is bolted with a plurality of first convex blocks 11 distributed in an annular array. The inner wall of the air inlet 20 is provided with a plurality of sliding grooves 21. A slider 22 is slidably connected to the inner wall of the sliding groove 21. A vibration spring 23 is bolted between the slider 22 and the sliding groove 21. A same mounting ring 13 is bolted between the plurality of sliders 22. A filter screen plate 5 is provided on the circumferential inner wall of the mounting ring 13. One end of the filter screen plate 5 is bolted to a fixing plate 10. One end of the fixing plate 10 close to the rotating plate 9 is bolted with a plurality of second convex blocks 12 distributed in an annular array. Both the first convex block 11 and the second convex block 12 are hemispherical.

[0026] As Figure 1 and Figure 7As shown in the figure, an air outlet 3 is provided at one side of the top of the fan housing 1. A support frame 2 is fixedly arranged on the outer wall of the fan housing 1 to support the whole fan through the support frame 2. The front end of the fan housing 1 is bolted with an inlet bell 4, and the inlet bell 4 corresponds to the air inlet 20. Both the inlet bell 4 and the fan housing 1 are made of fiberglass material, so as to ensure that air can enter the impeller 7 of the fan with the least loss, evenly distributed pressure and speed. The fiberglass material increases the corrosion resistance of the fan housing 1 and the inlet bell 4.

[0027] As Figure 2 and Figure 3 shown in the figure, the driving motor 6 is bolted to the outer wall of the rear end of the fan housing 1. A fixed setting is made between the output shaft of the driving motor 6 and the rotating shaft 8. An impeller 7 is fixedly arranged on the outer wall of the rotating shaft 8. The driving motor 6 drives the impeller 7 to rotate to realize functions such as ventilation and cooling of the fan. Connecting the impeller 7 and the rotating shaft 8 can vibrate the filter screen plate 5 when the impeller 7 rotates, realizing linkage, and there is no need to additionally add a power source to drive the filter screen plate 5 to vibrate.

[0028] When Example 1 is working, the driving motor 6 drives the rotating shaft 8 to rotate, and the rotating shaft 8 drives the impeller 7 to rotate, so that the fan starts to work. At the same time, the rotating shaft 8 drives the rotating plate 9 to rotate. Since the first convex block 11 and the second convex block 12 are respectively fixedly connected to the opposite sides of the rotating plate 9 and the fixed plate 10, during the rotation of the rotating plate 9, the first convex block 11 continuously presses the second convex block 12. Under the action of the slider 22 and the chute 21, the filter screen plate 5 is continuously pushed to move outside the air inlet 20. Through the elastic force of the vibration spring 23, the filter screen plate 5 is continuously driven to reset, thereby driving the filter screen plate 5 to vibrate, shaking off the dust and sundries adhered to the filter screen plate 5, effectively reducing the probability of blockage of the mesh holes of the filter screen plate 5, and greatly increasing the cleaning cycle of the staff for the filter screen plate 5. Example 2

[0029] On the basis of Example 1, as Figures 5 to 7 shown in the figure, two connecting inserts 14 are bolted to one end of the mounting ring 13. Two mounting plates 15 are bolted to the circumferential outer wall of the filter screen plate 5. Connecting sockets 16 adapted to the connecting inserts 14 are opened at one ends of the two mounting plates 15. Moving grooves 17 are opened at the top and bottom of the connecting inserts 14. Limiting blocks 18 are slidably arranged on the inner walls of the moving grooves 17 to limit the mounting plates 15 through the limiting blocks 18. A limiting spring 19 is bolted between the limiting blocks 18 and the moving grooves 17, and the surface of the limiting block 18 away from the limiting spring 19 is inclined.

[0030] Embodiment 2 When the filter screen plate 5 needs to be cleaned, the limit block 18 can be pressed to make the limit block 18 contract into the movable groove 17, and then the filter screen plate 5 can be pulled out. During installation, the connecting plug plate 14 is aligned with the connecting socket 16, and the connecting socket 16 is sleeved on the connecting plug plate 14. The inclined surface of the limit block 18 is squeezed by the inner wall of the connecting socket 16 to make the limit block 18 contract into the movable groove 17. When the limit block 18 passes through the connecting socket 16, under the elastic force of the limit spring 19, the limit block 18 is driven to move outwards, so as to limit the mounting plate 15, and then the filter screen plate 5 is installed, achieving the purpose of facilitating the installation and disassembly of the filter screen plate 5.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fiberglass centrifugal fan, comprising a fan housing (1), and an air inlet (20) is provided at the front end of the fan housing (1), characterized in that: One end inner wall of the blower housing (1) is rotatably connected to a rotating shaft (8), the rotating shaft (8) is driven by a driving motor (6), one end of the rotating shaft (8) is fixedly connected to a rotating plate (9), one end of the rotating plate (9) is fixedly connected to a plurality of first convex blocks (11) distributed in an annular array, the inner wall of the air inlet (20) is provided with a plurality of sliding grooves (21), the inner wall of the sliding groove (21) is slidably connected to a slider (22), a vibration spring (23) is fixedly connected between the slider (22) and the sliding groove (21), a same mounting ring (13) is fixedly connected between the plurality of sliders (22), a filter screen plate (5) is arranged on the circumferential inner wall of the mounting ring (13), one end of the filter screen plate (5) is fixedly connected to a fixing plate (10), one end of the fixing plate (10) close to the rotating plate (9) is fixedly connected to a plurality of second convex blocks (12) distributed in an annular array, and both the first convex blocks (11) and the second convex blocks (12) are hemispherical.

2. The FRP centrifugal fan according to claim 1, characterized in that: One end of the mounting ring (13) is fixedly connected to two connecting plug plates (14), two mounting plates (15) are fixedly connected to the circumferential outer wall of the filter screen plate (5), and connection sockets (16) adapted to the connecting plug plates (14) are respectively arranged at one ends of the two mounting plates (15).

3. The FRP centrifugal fan according to claim 2, wherein: Moving grooves (17) are respectively arranged at the top and bottom of the connecting plug plate (14), and limiting blocks (18) are slidably arranged on the inner walls of the moving grooves (17).

4. The FRP centrifugal fan according to claim 3, characterized in that: A limiting spring (19) is fixedly connected between the limiting block (18) and the moving groove (17), and one side of the limiting block (18) away from the limiting spring (19) is inclined.

5. A FRP centrifugal fan according to claim 1, characterized in that: An air outlet (3) is arranged at one side position of the top of the blower housing (1), and a support frame (2) is fixedly arranged on the outer wall of the blower housing (1).

6. A FRP centrifugal fan according to claim 1, characterized in that: The front end of the blower housing (1) is connected to an inlet bell (4) by bolts, the inlet bell (4) corresponds to the air inlet (20), and both the inlet bell (4) and the blower housing (1) are made of fiberglass.

7. A fiberglass centrifugal fan according to claim 1, characterized in that: The driving motor (6) is fixedly connected to the outer wall of the rear end of the blower housing (1), the output shaft of the driving motor (6) is fixedly arranged with the rotating shaft (8), and an impeller (7) is fixedly arranged on the outer wall of the rotating shaft (8).

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