High-pressure centrifugal fan

Abstract

The high-pressure centrifugal fan comprises a fan body and a protective support, and the fan body is provided with an air inlet; the protective support is arranged on the fan body and comprises a shielding part, the shielding part is arranged above the air inlet in the vertical direction, and the orthographic projection area of the shielding part covers the orthographic projection area of the air inlet. According to the embodiment of the invention, the protective bracket is directly arranged above the air inlet of the high-pressure centrifugal fan, so that the shielding part of the protective bracket can shield the air inlet, and the orthographic projection area of the shielding part is larger than that of the air inlet, so that a part of impurities or garbage can be prevented from flying into the air inlet; and rainwater falling into the air inlet can be reduced, so that when the high-pressure centrifugal fan is used for a dust remover chute or an ultra-dense phase conveying system, a series of material problems caused by poor air permeability of chute canvas can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of high-pressure fans, and in particular to a high-pressure centrifugal fan. Background Art

[0002] As a commonly used fan, high-pressure centrifugal fan is used in the dust collector chute and super-dense phase conveying system in the relevant technologies of electrolytic production. The high-pressure centrifugal fan will be installed on-site in the open air, and the air inlet will be exposed to the outside. In case of rain or snow, water will enter the entire air duct from the fan inlet, causing the chute canvas in the system to become wet and the air permeability to deteriorate, affecting the material flow and causing a great impact on electrolytic production. Utility Model Content

[0003] The embodiment of the present application provides a high-pressure centrifugal fan that can effectively prevent rainwater from entering and reduce a series of material problems caused by the deterioration of the air permeability of the chute canvas.

[0004] An embodiment of the present application provides a high-pressure centrifugal fan, including a fan body and a protective bracket, the fan body having an air inlet; the protective bracket is arranged on the fan body, the protective bracket includes a shielding portion, the shielding portion is vertically arranged above the air inlet, and the orthographic projection area of ​​the shielding portion covers the orthographic projection area of ​​the air inlet.

[0005] In some embodiments of the present application, the shielding portion is spaced apart from the air inlet, and the distance between the shielding portion and the air inlet ranges from 100 mm to 150 mm, which not only reduces the splashing of rainwater, but also does not affect the entry of external air and the normal operation of the high-pressure centrifugal fan.

[0006] In some embodiments of the present application, the protective bracket also includes a water receiving portion, which is arranged on the peripheral side of the shielding portion. The water receiving portion is used to collect water that slides down from the shielding portion, thereby reducing the amount of rainwater that drips from the peripheral side of the shielding portion and then floats into the air inlet again.

[0007] In some embodiments of the present application, the protective bracket also includes a guide trough body, one end of the guide trough body is connected to the water receiving part, and the other end of the guide trough body extends in a direction away from the fan body, and the guide trough body is used to guide the water in the water receiving part to a position away from the fan body, thereby reducing the impact of rainwater on the fan body.

[0008] In some embodiments of the present application, a side of the shielding portion away from the fan body is formed as a guide surface with a slope, and the guide surface is used to guide water dripping on the shielding portion to the water receiving portion, thereby reducing water accumulation on the shielding portion and reducing the possibility of water entering the air inlet.

[0009] In some embodiments of the present application, the shielding portion includes a first part and a second part that are connected to each other, the first part and the second part are arranged at an angle, and both the first part and the second part extend downward at an angle; wherein the water receiving portion is located at the bottom end of the first part and the second part, thereby reducing water accumulation on the shielding portion and reducing the possibility of water entering the air inlet.

[0010] In some embodiments of the present application, the fan body includes an air inlet duct extending horizontally, with the air inlet located at an end of the air inlet duct. The first portion is located above the air inlet duct, and the second portion is generally arc-shaped, curving toward the air inlet. The second portion can horizontally shield the air inlet, reducing the risk of rainwater being blown into the air inlet by wind, thereby further reducing the possibility of rainwater entering the air inlet.

[0011] In some embodiments of the present application, the shielding portion includes a frame and a plurality of color steel tiles, and the plurality of color steel tiles are arranged in sequence on the frame to improve the strength of the shielding portion.

[0012] In some embodiments of the present application, the protective bracket also includes a connecting portion, which extends vertically, and one end of the connecting portion is connected to the fan body, and the other end of the connecting portion is connected to the shielding portion, so as to provide vertical support for the shielding portion, thereby making the shielding portion stronger.

[0013] In some embodiments of the present application, the connecting portion and the shielding portion are welded or integrally formed to improve the overall strength of the protective bracket.

[0014] The beneficial effects of the embodiment of the present application are as follows: the embodiment of the present application directly sets a protective bracket above the air inlet of the high-pressure centrifugal fan, so that the shielding part of the protective bracket can shield the air inlet, and the orthographic projection area of ​​the shielding part is larger than the orthographic projection area of ​​the air inlet, which can not only block a part of impurities or garbage from floating into the air inlet, but also reduce rainwater falling into the air inlet, so that when the high-pressure centrifugal fan is used in a dust collector chute or an ultra-dense phase conveying system, it can reduce a series of material problems caused by the poor air permeability of the chute canvas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 This is a structural diagram of a high-pressure centrifugal fan in one embodiment of the present application;

[0017] Figure 2 This is a structural diagram of a high-pressure centrifugal fan in another embodiment of the present application;

[0018] Figure 3 This is a structural diagram of a high-pressure centrifugal fan in another embodiment of the present application;

[0019] Figure 4 This is a structural diagram of a high-pressure centrifugal fan in another embodiment of the present application.

[0020] Reference numerals:

[0021] 1. High-pressure centrifugal fan;

[0022] 10. Fan body; 11. Air inlet; 12. Air inlet duct;

[0023] 20. Protective bracket; 21. Shielding portion; 211. Guide surface; 222. First portion; 223. Second portion; 22. Water receiving portion; 221. Water receiving trough; 23. Connecting portion. DETAILED DESCRIPTION

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the following will be described clearly and completely in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] In related technologies, high-pressure centrifugal fans used in dust collector chutes and super-dense phase conveying systems are generally installed outdoors, and the air inlets are exposed to the outside. In rainy and snowy weather, water will enter the entire air duct from the fan inlet, causing the chute canvas in the system to become wet and less breathable, affecting the material flow. In addition, rainwater will mix with fluorine-containing alumina, which can easily cause the fluorine-containing alumina to become sticky and have poor fluidity, resulting in difficulties in adding materials and unloading materials from the electrolytic cell, which has a great impact on electrolytic production.

[0026] For the above situation, please see Figure 1 The present application proposes a high-pressure centrifugal fan 1, comprising a fan body 10 and a protective bracket 20. The fan body 10 has an air inlet 11, which is used to allow external air to enter. The protective bracket 20 is arranged on the fan body 10. The protective bracket 20 includes a shielding portion 21, which is vertically arranged above the air inlet 11 to block rainwater and reduce the entry of rainwater into the air inlet 11.

[0027] Among them, the orthographic projection area of ​​the shielding portion 21 covers the orthographic projection area of ​​the air inlet 11, that is, when the axial direction of the air inlet 11 extends vertically, the shielding portion 21 can completely cover the air inlet 11, thereby reducing the entry of rainwater; when the axial direction of the air inlet 11 extends horizontally, the shielding portion 21 is located above the air inlet 11, and the orthographic projection area of ​​the shielding portion 21 is large enough, which is conducive to blocking rainwater, thereby reducing the entry of rainwater.

[0028] It should be noted that the embodiment of the present application directly sets a protective bracket 20 above the air inlet 11 of the high-pressure centrifugal fan 1, so that the shielding portion 21 of the protective bracket 20 can shield the air inlet 11, and the orthographic projection area of ​​the shielding portion 21 is larger than the orthographic projection area of ​​the air inlet 11, which is conducive to shielding external debris and rainwater. That is, the shielding portion 21 can not only block a part of the impurities or garbage from floating into the air inlet 11, but also reduce the rainwater falling into the air inlet 11, so that when the high-pressure centrifugal fan 1 is used in a dust collector chute or a super-dense phase conveying system, it can reduce a series of material problems caused by the poor air permeability of the chute canvas.

[0029] See Figure 1 In some embodiments of the present application, the shielding portion 21 is spaced apart from the air inlet 11, and the distance between the shielding portion 21 and the air inlet 11 ranges from 100 mm to 150 mm.

[0030] It can be understood that when the distance between the shielding portion 21 and the air inlet 11 is ensured to be within the range of 100mm to 150mm, the shielding portion 21 can not only reduce the splashing of rainwater and play a role in shielding the air inlet 11 from rainwater, but also the distance reserved between the shielding portion 21 and the air inlet 11 will not affect the entry of external air and the normal operation of the high-pressure centrifugal fan 1.

[0031] In some embodiments of the present application, the shielding portion 21 includes a frame and a plurality of color-coated steel tiles (not shown), which are sequentially arranged on the frame. Specifically, the frame can be made of metal or plastic to enhance the strength of the shielding portion 21. Color-coated steel tiles have advantages such as light weight, high strength, easy and quick installation, shock resistance, and waterproofing. Therefore, using color-coated steel tiles to form the shielding portion 21 helps extend the life of the shielding portion 21.

[0032] See Figure 1 In some embodiments of the present application, the protective bracket 20 further includes a water receiving portion 22 , which is disposed on the peripheral side of the shielding portion 21 , and is used to collect water that slides down from the shielding portion 21 .

[0033] For example, a water receiving groove 221 can be provided on the water receiving portion 22. When rainwater falls on the shielding portion 21, it can slide along the shielding portion 21 to the water receiving portion 22 around the shielding portion 21 and enter the water receiving groove 221, so that the rainwater is collected, reducing the possibility of rainwater dripping from the side of the shielding portion 21 and then drifting into the air inlet 11 again, further reducing the possibility of rainwater entering the air inlet 11.

[0034] Furthermore, in some embodiments of the present application, the protective bracket 20 also includes a guide trough body (not shown in the figure), one end of the guide trough body is connected to the water receiving portion 22, and the other end of the guide trough body extends away from the fan body 10.

[0035] Specifically, the guide trough body can be connected to the water receiving trough 221 so that water in the water receiving trough 221 flows into the guide trough body, and the guide trough body guides the water on the water receiving portion 22 to a position away from the fan body 10, thereby reducing the impact of rainwater on the fan body 10. The guide trough body is arranged to be tilted downward so that the water in the guide trough body can flow along the guide trough body.

[0036] See Figure 2 In some embodiments of the present application, the side of the shielding portion 21 away from the fan body 10 is formed as a guide surface 211 with a slope. Specifically, the guide surface 211 allows water dripping on the shielding portion 21 to flow downward along the slope of the guide surface 211 toward the water receiving portion 22, so as to guide the water on the shielding portion 21 to the water receiving portion 22, reduce the accumulation of water on the shielding portion 21, and reduce the possibility of water entering the air inlet 11. The direction of the water flow is guided by the setting of the guide surface 211 to prevent the water flow from flowing around on the shielding portion 21 and causing water to enter the air inlet 11.

[0037] The guide surface 211 has a slope, and the guide surface 211 extends obliquely from a direction away from the water receiving portion 22 to a direction close to the water receiving portion 22, so the guide surface 211 has a height difference in the vertical direction. At this time, the water on the shielding portion 21 will flow downward along the slope of the guide surface 211, so the water receiving portion 22 can be only provided at the bottom end of the guide surface 211. For example, the guide surface 211 can be a complete oblique surface, obliquely extending from a direction away from the water receiving portion 22 to a direction close to the water receiving portion 22; or, the guide surface 211 can be composed of multiple oblique surfaces, and the multiple oblique surfaces have the same inclination direction but different inclination angles; or, the guide surface 211 can also be a curved surface, the highest point of which is set away from the water receiving portion 22, and the lowest point of which is set close to the water receiving portion 22. Of course, the guide surface 211 can also be other types of surfaces with a slope, which are not specifically limited here.

[0038] It should be noted that the side of the shielding portion 21 away from the fan body 10 is the top surface, and the side of the shielding portion 21 close to the fan body 10 is the bottom surface. The top surface is formed as a guide surface 211 with a slope. At this time, the bottom surface can be parallel to the horizontal plane, so that the distance from each part of the bottom surface to the air inlet 11 is the same, thereby providing more comprehensive shielding for the air inlet 11 and reducing the entry of rainwater; alternatively, the bottom surface can also be set parallel to the top surface, which is not specifically limited here.

[0039] Alternatively, see Figure 3 In some embodiments of the present application, the shielding portion 21 includes a first part 222 and a second part 223 that are connected to each other, the first part 222 and the second part 223 are arranged at an angle, and both the first part 222 and the second part 223 extend downward at an angle; wherein the water receiving portion 22 is located at the bottom end of the first part 222 and the second part 223.

[0040] Specifically, the first portion 222 and the second portion 223 are arranged at an angle, that is, the first portion 222 and the second portion 223 are arranged in an inverted V shape as a whole. Water dripping onto the shielding portion 21 can slide along the first portion 222 and the second portion 223 to the water receiving portion 22 at the bottom, respectively, reducing water accumulation on the shielding portion 21 and reducing the possibility of water entering the air inlet 11. The inverted V-shaped first portion 222 and the second portion 223 guide the direction of water flow, preventing water from flowing around on the shielding portion 21 and causing water to enter the air inlet 11. The angle between the first portion 222 and the second portion 223 can range from 0° to 180°, preferably 90° to 150°, and is not specifically limited here.

[0041] For further information, please see Figure 3 In some embodiments of the present application, the fan body 10 includes an air inlet duct 12, which extends in a horizontal direction. The air inlet 11 is located at the end of the air inlet duct 12, and the external air enters the air inlet duct 12 from the air inlet 11, and then enters the interior of the fan body 10 through the air inlet duct 12.

[0042] Specifically, since the air inlet duct 12 is arranged horizontally, the axial direction of the air inlet 11 is also arranged horizontally. The first portion 222 is located above the air inlet duct 12. The first portion 222 can block rainwater above the air inlet 11. The first portion 222 can be a downwardly inclined surface or an upwardly convex curved surface. Figure 4 As shown, the second portion 223 is in an arc shape as a whole, and the second portion 223 bends toward the air inlet 11, so the second portion 223 can block the air inlet 11 in the horizontal direction, reducing the possibility of rainwater being blown into the air inlet 11 under the action of wind, thereby further reducing the possibility of rainwater entering the air inlet 11. Figure 4 As shown, the arc-shaped second part 223 extends downward, and the downward extension length of the second part 223 may not exceed the bottom end of the air inlet 11, or the downward extension length of the second part 223 may also exceed the bottom end of the air inlet 11. The selection here is made according to the actual situation. Rainwater sliding down from the second part 223 will fall along the second part 223 and away from the air inlet 11. Therefore, the bottom end of the second part 223 may not be provided with a water receiving portion 22.

[0043] See Figure 3-Figure 4 In some embodiments of the present application, the protective bracket 20 also includes a connecting portion 23, which extends vertically, and one end of the connecting portion 23 is connected to the fan body 10, and the other end of the connecting portion 23 is connected to the shielding portion 21, so as to provide vertical support for the shielding portion 21, so that the shielding portion 21 is stronger.

[0044] Furthermore, in some embodiments of the present application, the protective bracket 20 can be made of metal. In this case, the connecting portion 23 and the shielding portion 21 can be directly fixed by welding or the connecting portion 23 and the shielding portion 21 can be integrally formed, both of which can improve the overall strength of the protective bracket 20; or, the protective bracket 20 can be made of hard plastic, and the connecting portion 23 and the shielding portion 21 can be integrally formed, thereby reducing the mass of the protective bracket 20 and thus reducing the pressure on the fan body 10.

[0045] Among them, the shielding part 21 is a plate-like structure, and the connection between the connecting part 23 and the shielding part 21 is located in the middle of the plate-like structure, so that the connecting part 23 can provide support for the shielding part 21 more evenly, making the setting of the shielding part 21 more stable.

[0046] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0047] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A high pressure centrifugal fan, characterized in that: include: A fan body having an air inlet; A protective bracket is arranged on the fan body, and the protective bracket includes a shielding portion, which is vertically arranged above the air inlet, and the orthographic projection area of ​​the shielding portion covers the orthographic projection area of ​​the air inlet.

2. The high pressure centrifugal fan according to claim 1, characterized in that: The shielding portion is spaced apart from the air inlet, and the distance between the shielding portion and the air inlet is in the range of 100 mm to 150 mm.

3. The high pressure centrifugal fan according to claim 1, characterized in that: The protective bracket also includes a water receiving portion, which is arranged on the peripheral side of the shielding portion and is used to collect water that slides down from the shielding portion.

4. The high pressure centrifugal fan according to claim 3, characterized in that: The protective bracket also includes a guide groove body, one end of which is connected to the water receiving part, and the other end of which extends away from the fan body. The guide groove body is used to guide the water in the water receiving part to a position away from the fan body.

5. The high pressure centrifugal fan according to claim 3, characterized in that: A side of the shielding portion away from the fan body is formed as a guide surface with a slope, and the guide surface is used to guide water dripping on the shielding portion to the water receiving portion.

6. The high pressure centrifugal fan according to claim 3, characterized in that: The shielding portion includes a first portion and a second portion connected to each other, the first portion and the second portion are arranged at an angle, and the first portion and the second portion both extend obliquely downward; Wherein, the water receiving portion is located at the bottom ends of the first part and the second part.

7. The high pressure centrifugal fan according to claim 6, characterized in that: The fan body includes an air inlet duct, the air inlet duct extends in a horizontal direction, and the air inlet is located at an end of the air inlet duct; The first part is located above the air inlet duct, the second part is arc-shaped as a whole, and the second part bends toward the air inlet.

8. The high pressure centrifugal fan according to claim 1, characterized in that: The shielding part includes a frame and a plurality of color steel tiles, and the plurality of color steel tiles are arranged in sequence on the frame.

9. The high pressure centrifugal fan according to claim 1, characterized in that: The protective bracket also includes a connecting portion, which extends vertically, and one end of the connecting portion is connected to the fan body, and the other end of the connecting portion is connected to the shielding portion.

10. The high pressure centrifugal fan according to claim 9, characterized in that: The connecting portion and the shielding portion are welded or integrally formed.

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