Noise-reduction high-pressure fan

Abstract

The utility model relates to the technical field of fans, in particular to a noise reduction high-pressure fan. Comprising a shell, an impeller structure and a driving device, the impeller structure comprises a first connecting plate and a second connecting plate, blades are installed on the inner side between the first connecting plate and the second connecting plate, the circumferential end of the first connecting plate and the circumferential end of the second connecting plate are bent inwards by 10-20 degrees, and the distance between air outlets formed by the first connecting plate and the second connecting plate is 8-12 cm. According to the fan, the first connecting plate and the second connecting plate of the impeller are bent inwards by 15 degrees, and the distance between the air outlets is set to be 10 cm, so that the air pressure can be effectively enhanced under the condition that the structure of the impeller is changed, the air pressure for conveying solid-state fluid can be met without adopting a high-power motor, and the using effect of the fan is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a noise-reducing high-pressure fan. Background Art

[0002] A fan is a machine that relies on the input mechanical energy to increase the gas pressure and pump the gas. It is a driven fluid machine. Fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings for ventilation, dust removal and cooling, ventilation and induced draft of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household electrical appliances; drying and selection of grains, air source of wind tunnels and inflation and propulsion of hovercrafts, etc.

[0003] Currently, when using a fan to transport some solid fluids, such as fish feed, sand, grains, etc., a relatively large wind pressure is required for transportation. The common way to increase the pressure of the fan in the prior art is to replace it with a high-power motor. However, this will greatly increase the energy consumption. Moreover, the output port of the existing fan impeller structure is relatively large, which will affect the wind pressure to a certain extent, and thus reduce the use effect of transporting solid fluids. Therefore, we propose a noise-reducing high-pressure fan. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a noise-reducing high-pressure fan. After the structure of the fan is improved, it can effectively solve the problems raised in the above background art.

[0005] The technical solution of the utility model is as follows:

[0006] A noise-reducing high-pressure fan includes a casing, an impeller structure and a driving device;

[0007] One end of the casing is fixedly installed with a driving device, and the moving end of the driving device is connected with an impeller structure;

[0008] The impeller structure includes a first connecting plate and a second connecting plate. Blades are installed inside between the first connecting plate and the second connecting plate. The circumferential ends of the first connecting plate and the second connecting plate are both bent inward by 10-20°. The distance between the air outlets formed by the first connecting plate and the second connecting plate is 8-12 cm.

[0009] Further, the number of the blades is several, and they are arranged at equal intervals at one end of the first connecting plate and the second connecting plate close to the circumferential end.

[0010] Further, a shaft hole is arranged outside the central part of the first connecting plate, an air inlet connecting port is arranged outside the central part of the second connecting plate. The shaft hole is communicated with the air inlet connecting port, and the air inlet connecting port is communicated with the air outlet.

[0011] Furthermore, the circumferential ends of the first connecting plate and the second connecting plate are both bent inward by 15°, and the distance between the air outlets formed by the first connecting plate and the second connecting plate is 10 cm.

[0012] Furthermore, the driving device is a motor, and the rotating shaft end of the motor is fixedly connected to the shaft hole.

[0013] Furthermore, the machine shell is sequentially provided with an inner shell, a noise reduction layer and an outer shell from the inside to the outside.

[0014] Furthermore, a cavity is formed between the inner shell and the outer shell, a noise reduction layer is arranged inside the cavity, the noise reduction layer is a sound insulation cotton layer, and the inner shell and the outer shell are fixed by welding or integrally formed.

[0015] Furthermore, an air inlet is arranged at one end of the machine shell, the air inlet is communicated with the air inlet connection port, an air outlet is arranged at the other end of the machine shell, and the air outlet is communicated with the air outlet.

[0016] Furthermore, a lubricating layer is arranged on the inner wall of the machine shell, and the lubricating layer is a self-lubricating plastic layer.

[0017] Furthermore, a reinforcing rib is fixedly connected to the outer wall of the machine shell and at the outer circumference of the air inlet, and a filter screen is detachably installed inside the air inlet.

[0018] The beneficial effects of the present utility model are as follows:

[0019] Compared with the prior art, by bending the first connecting plate and the second connecting plate of the impeller inward by 15° and setting the distance between the air outlets to 10 cm, the present utility model can effectively enhance the air pressure under the condition of changing the structure of the impeller. Because the overall structure of the impeller becomes narrower and the distance between the air outlets and the inside of the impeller becomes smaller, the air outlet pressure can be further enhanced, and a strong air pressure can be formed inside the impeller. It is possible to achieve the air pressure required for transporting solid fluids without using a high-power motor, thereby greatly improving the use effect of the present fan and having strong practicability;

[0020] By arranging a noise reduction layer inside the machine shell, since the present fan can be used to transport solid fluids, the solid fluids will generate relatively large noise after colliding with the fan inside the fan, which will cause a certain degree of environmental noise pollution to a certain extent. Therefore, setting the noise reduction layer can realize the environmental protection use of the fan and further improve its use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic structural diagram of another side of the present utility model;

[0023] Figure 3 This is a sectional view of the utility model;

[0024] Figure 4 This is a structural schematic diagram of the impeller structure of the utility model.

[0025] In the figure, 1 is the housing; 2 is the impeller structure; 3 is the driving device; 4 is the first connecting plate; 5 is the second connecting plate; 6 is the air outlet; 7 is the blade; 8 is the shaft hole; 9 is the air inlet connection port; 10 is the inner housing; 11 is the noise reduction layer; 12 is the outer housing; 13 is the air inlet; 14 is the air discharge port; 15 is the reinforcing rib; 16 is the filter screen. Specific embodiments

[0026] The following further describes the specific embodiments of the utility model with reference to the accompanying drawings:

[0027] As Figures 1-4 shown,

[0028] A noise-reducing high-pressure blower includes a housing 1, an impeller structure 2, and a driving device 3; a driving device 3 is fixedly installed at one end of the housing 1, and the moving end of the driving device 3 is connected to an impeller structure 2; the impeller structure 2 includes a first connecting plate 4 and a second connecting plate 5, blades 7 are installed inside between the first connecting plate 4 and the second connecting plate 5, the circumferential ends of the first connecting plate 4 and the second connecting plate 5 are bent inward by 10-20°, and the distance between the air outlets 6 formed by the first connecting plate 4 and the second connecting plate 5 is 8-12 cm; in this embodiment, after the circumferential ends of the first connecting plate 4 and the second connecting plate 5 are bent inward by a certain angle, an air outlet spacing within a set range can be formed, making the overall structure of the impeller structure 2 narrower, and the distance between the air outlet 6 and the inside of the impeller structure 2 smaller, which can further enhance the air outlet pressure, and thus can effectively enhance the air pressure under the condition of changing the structure of the impeller.

[0029] As a preferred embodiment; the number of the blades 7 is several, there are gaps between adjacent blades 7, and they are equally spaced at one end of the first connecting plate 4 and the second connecting plate 5 close to the circumferential end; it can be understood that the blades 7 are arc-shaped and are equally spaced and equally angled at one end of the first connecting plate 4 and the second connecting plate 5 close to the circumferential end, which is beneficial to enhancing the air outlet pressure and facilitating the transportation of solid-state fluids.

[0030] As a preferred embodiment, a shaft hole 8 is provided outside the central portion of the first connecting plate 4, and an air inlet connection port 9 is provided outside the central portion of the second connecting plate 5. The shaft hole 8 communicates with the air inlet connection port 9, and the air inlet connection port 9 communicates with the air outlet 6. It can be understood that the provision of the shaft hole 8 facilitates the connection with the rotating shaft of the driving device 3, and the air inlet connection port 9 can discharge air or solid fluid, which is then discharged through the air outlet 6.

[0031] As a preferred embodiment, the circumferential ends of the first connecting plate 4 and the second connecting plate 5 are both bent inward by 15°. The distance between the air outlets 6 formed by the first connecting plate 4 and the second connecting plate 5 is 10 cm. After being bent inward by 15°, the distance between the air outlets 6 formed by the first connecting plate 4 and the second connecting plate 5 is exactly 10 cm, which is the structure at the maximum wind pressure.

[0032] As a preferred embodiment, the driving device 3 is a motor, and the rotating shaft end of the motor is fixedly connected to the shaft hole 8. Driven by the motor, the impeller structure 2 can be rotated.

[0033] As a preferred embodiment, the machine shell 1 is sequentially provided with an inner shell 10, a noise reduction layer 11, and an outer shell 12 from the inside to the outside.

[0034] As a preferred embodiment, a cavity is formed between the inner shell 10 and the outer shell 12, and a noise reduction layer 11 is provided inside the cavity. The noise reduction layer 11 is a sound insulation cotton layer. The inner shell 10 and the outer shell 12 are fixed by welding or integrally formed. By providing the noise reduction layer 11 inside the machine shell 1, since this fan can be used to transport solid fluid, the solid fluid will generate a large amount of noise after colliding with the machine shell 1 inside the machine shell 1, which will cause a certain degree of environmental noise pollution to a certain extent. Therefore, setting the noise reduction layer 11 can realize the environmental protection use of the fan and further improve its use effect.

[0035] As a preferred embodiment, an air inlet 13 is further provided at one end of the machine shell 1. The air inlet 13 communicates with the air inlet connection port 9. A discharge port 14 is further provided at the other end of the machine shell 1. The discharge port 14 communicates with the air outlet 6. It can be understood that air or solid fluid first enters through the air inlet 13, then enters the inside of the impeller through the air inlet connection port 9, and is then discharged to the discharge port 14 through the air outlet 6, and finally discharged outside the fan. With the structure of this fan, due to the large wind pressure, when transporting solid fluid, the solid fluid can fly out more than ten meters or dozens of meters away.

[0036] As a preferred embodiment, a lubricating layer is further provided on the inner wall of the machine shell 1. The lubricating layer is a self-lubricating plastic layer. By providing the lubricating layer, the purpose is to reduce the friction between the solid fluid and the fan and further improve the transportation effect and efficiency of the solid fluid.

[0037] As a preferred embodiment, a reinforcing rib 15 is also fixedly connected to the outer wall of the casing 1 and located at the outer circumference of the air inlet 13, and a filter screen 16 is detachably installed inside the air inlet 13. By providing the reinforcing rib 15, the strength of the casing 1 at the air inlet 13 can be enhanced. The purpose of setting the filter screen 16 is to filter impurities in the air. When solid fluid is not being transported, it can be used as an ordinary fan to filter impurities in the air, which can improve the quality of the transported air.

[0038] The working principle of the present utility model is as follows: Remove the filter screen 16, install a pipeline, and place the other end of the pipeline in the solid fluid. Then start the driving device 3 to drive the impeller structure 2 to rotate, thereby extracting the solid fluid. Finally, the solid fluid can be ejected from the air outlet 14.

[0039] It should be noted that the main problems in the prior art are as follows: The common way to increase the pressure of a fan in the prior art is to replace it with a high-power motor. However, this will greatly increase energy consumption. Moreover, the output port of the existing fan impeller structure is relatively large, which will affect the wind pressure to a certain extent, thereby reducing the use effect of transporting solid fluid (the ejection distance of the solid fluid is relatively short).

[0040] Therefore, after the improvement of this application, by bending the first connecting plate 4 and the second connecting plate 5 of the impeller structure 2 inward by 15°, and setting the distance between the air outlets 6 to 10 cm, the wind pressure can be effectively enhanced while changing the structure of the impeller. Without using a high-power motor, the wind pressure required for transporting solid fluid can be achieved, thereby greatly improving the use effect of this fan (the ejection distance of the solid fluid is relatively far).

[0041] The above embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary engineering and technical personnel in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A noise-reducing high-pressure blower, comprising a housing, an impeller structure and a driving device; a driving device is fixedly installed at one end of the housing, and a moving end of the driving device is connected with the impeller structure; characterized in that: The impeller structure includes a first connecting plate and a second connecting plate. Blades are installed inside between the first connecting plate and the second connecting plate. The circumferential ends of the first connecting plate and the second connecting plate are bent inward by 10-20°, and the distance between the air outlets formed by the first connecting plate and the second connecting plate is 8-12 cm.

2. The noise-reducing high-pressure blower according to claim 1, wherein: The number of the blades is several, and they are arranged at equal intervals at one end of the first connecting plate and the second connecting plate close to the circumferential end.

3. The noise-reducing high-pressure blower according to claim 2, wherein: A shaft hole is arranged outside the central part of the first connecting plate, and an air inlet connection port is arranged outside the central part of the second connecting plate. The shaft hole is communicated with the air inlet connection port, and the air inlet connection port is communicated with the air outlet.

4. The noise-reducing high-pressure blower according to claim 3, characterized in that: The circumferential ends of the first connecting plate and the second connecting plate are bent inward by 15°, and the distance between the air outlets formed by the first connecting plate and the second connecting plate is 10 cm.

5. The noise-reducing high-pressure blower according to claim 4, characterized in that: The driving device is a motor, and the rotating shaft end of the motor is fixedly connected with the shaft hole.

6. The noise-reducing high-pressure blower according to claim 5, wherein: The housing is sequentially provided with an inner housing, a noise reduction layer and an outer housing from the inside to the outside.

7. The noise-reducing high-pressure blower according to claim 6, wherein: A cavity is formed between the inner housing and the outer housing. A noise reduction layer is arranged inside the cavity. The noise reduction layer is a sound insulation cotton layer. The inner housing and the outer housing are fixed by welding or are of an integrally formed structure.

8. The noise reduction high-pressure blower according to claim 7, characterized in that: One end of the housing is further provided with an air inlet, the air inlet is communicated with the air inlet connection port, the other end of the housing is further provided with an air outlet, and the air outlet is communicated with the air outlet.

9. The noise reduction high-pressure blower according to claim 8, wherein: A lubricating layer is further arranged on the inner wall of the housing, and the lubricating layer is a self-lubricating plastic layer.

10. A noise-reducing high-pressure blower according to claim 9, characterized in that: Reinforcing ribs are fixedly connected to the outer wall of the housing and at the outer circumference of the air inlet, and a filter screen is detachably installed inside the air inlet.

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