Air duct structure for conical protective net

Abstract

The air duct structure comprises an air duct body and the protective net, a connecting part is arranged on the inner wall of the air duct body, the protective net is of a conical structure, the large-diameter end of the protective net extends into the air duct body to be connected with the connecting part, and the connecting part used for installing the protective net is arranged in the air duct body. The large-diameter end of the conical protection net can extend into the air duct body and is connected with the air duct body through the connecting part to complete installation, the protection net extends into the air duct body, so that the protection net and the air duct body can be overlapped in the vertical direction, the space occupation of the fan in the vertical direction is reduced, and the input cost of a plant is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of air-cooling fans, and in particular to a wind tube structure for a conical protective net. Background Art

[0002] The wind duct and protective net are supporting products of the fan. The wind duct is installed on one side of the fan. The setting of the wind duct helps to concentrate and guide the air flow and reduce wind resistance, thereby improving the efficiency of the fan and reducing energy consumption. The protective net is installed at the lower end of the wind duct to prevent external objects from entering the wind duct. On the one hand, it protects the safety of workers, and on the other hand, it prevents debris from entering the wind duct and affecting the normal operation of the fan.

[0003] There are various forms of protective nets. Conical protective nets are required under some special working conditions. However, since the conical protective net has a certain axial height, it often requires a larger space, resulting in an increase in the investment cost of the factory.

[0004] Therefore, there is an urgent need for a conical guard net wind tube structure that can reduce the space occupied by the fan. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a wind duct structure for a conical protective net, in which the large diameter end of the conical protective net is extended into the interior of the wind duct body and connected to the wind duct through a connecting part inside the wind duct body, so that the wind duct and the conical protective net overlap with each other in the vertical direction, thereby reducing the space occupied by the fan in the vertical direction.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A wind tube structure for a conical protective net, comprising:

[0008] A wind tube body, wherein a connecting portion is arranged on the inner wall of the wind tube body;

[0009] The protective net is in a conical structure, and the large diameter end of the protective net extends into the interior of the wind tube body and is connected to the connecting part.

[0010] Preferably, along the centerline direction of the wind duct body, the wind duct body includes an expansion section and a straight section, the expansion section includes a first end and a second end, the size of the first end is smaller than the size of the second end, the size of the first end matches the size of the straight section, and the first end is detachably connected to the straight section.

[0011] Preferably, the expansion section is made of glass fiber reinforced plastic.

[0012] Preferably, the straight tube section is made of metal material, and the connecting portion is arranged on the inner wall of the straight tube section.

[0013] Preferably, the connecting portion is connecting holes arranged at intervals along the circumference of the straight cylinder section, and the protective net is bolted to the connecting holes through a bolt assembly.

[0014] Preferably, the straight tube section includes a first section and a second section, one end of the first section is connected to the expansion section, and one end of the first section away from the expansion section is connected to the second section.

[0015] Preferably, along the circumference of the air duct main body, the air duct main body includes a plurality of splicing blocks, the splicing blocks are arc-shaped, and any two adjacent splicing blocks are connected to each other.

[0016] Preferably, any two adjacent splicing blocks are detachably connected via a bolt structure.

[0017] Preferably, the connecting portion is provided with a reinforcing plate.

[0018] Preferably, reinforcing ribs are provided on the side walls of the wind tube body, and the reinforcing ribs are arranged along the circumference of the wind tube body.

[0019] Compared with the prior art, the present invention mainly achieves the following technical effects:

[0020] In the wind duct structure for the conical protective net disclosed in the present invention, a connecting portion for installing the protective net is arranged inside the wind duct body, and the large diameter end of the conical protective net can extend into the wind duct body and be connected to the wind duct body through the connecting portion to complete the installation. Since the protective net extends into the wind duct body, the protective net and the wind duct body can overlap with each other in the vertical direction, thereby reducing the space occupied by the fan in the vertical direction and reducing the investment cost of the factory building. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Attached Figure 1 A schematic diagram of an embodiment of the present invention;

[0023] Attached Figure 2 It is a schematic diagram of the main body of the air duct of the present invention;

[0024] Attached Figure 3 It is a schematic diagram of the coordination between the straight tube section and the expansion section;

[0025] Attached Figure 4 A schematic diagram of another embodiment of the present invention;

[0026] Attached Figure 5 It is a schematic diagram of the connection between the protective net and the wind tube body of the present invention.

[0027] Among them, 1. air duct body; 2. protective net; 3. expansion section; 4. first end; 5. second end; 6. first section; 7. second section; 8. splicing block; 9. reinforcement plate; 10. reinforcement ribs. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The purpose of the present invention is to provide a wind tube structure for a conical protective net, wherein a connecting portion for installing the protective net is arranged inside the wind tube body, so that the wind tube and the conical protective net overlap each other in the vertical direction, thereby reducing the space occupied by the fan in the vertical direction.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] refer to Figure 1-5 The wind duct structure for a conical protective net disclosed in the embodiment of the present invention comprises: a wind duct main body 1 and a protective net 2. A connecting portion for installing the protective net 2 is provided on the inner wall of the wind duct main body 1. The protective net 2 is in a conical structure. The large diameter end of the protective net 2 extends into the interior of the wind duct main body 1 and is connected to the wind duct main body 1 through the connecting portion. The portion of the protective net 2 extending into the interior of the wind duct main body 1 overlaps with the wind duct main body 1, which effectively utilizes the space inside the wind duct main body 1 and reduces the vertical space required for installing the conical protective net 2, thereby reducing the space occupied by the entire fan in the vertical direction and reducing the investment cost of the factory building.

[0032] As a preferred embodiment, the wind duct body 1 includes an expansion section 3 and a straight section. The expansion section 3 is trumpet-shaped as a whole, which effectively increases the air inlet area of ​​the wind duct port. Furthermore, the expansion section 3 and the straight section are arranged in sequence along the center line direction of the wind duct body 1. The expansion section 3 includes a first end 4 and a second end 5. The size of the first end 4 is smaller than the size of the second end 5. The size of the first end 4 of the expansion section 3 matches the size of the straight section. The expansion section 3 is detachably connected to the straight section through the first end 4. The wind duct body 1 is configured as a detachably connected expansion section 3 and a straight section, which greatly reduces the processing difficulty when manufacturing the wind duct body 1.

[0033] Preferably, the expansion section 3 is made of fiberglass, which has the advantages of high strength and small mass. The use of fiberglass to make the expansion section 3 not only ensures the overall strength of the wind duct body 1, but also can safely and firmly connect the protective net 2 without affecting the rigidity of the wind duct itself, and at the same time reduces the weight of the wind duct body 1. It can be understood by those skilled in the art that the greater the mass of an object, the lower its natural frequency. As a part of the fan, the increase in the mass of the wind duct body 1 will lead to a decrease in the natural frequency of the entire system, making it easier to match the natural frequency with the excitation frequency (such as the blade rotation frequency) generated during the operation of the fan, thereby making it easier for the wind duct body 1 and the truss structure supporting the wind duct body 1 to resonate. In the present invention, the expansion section 3 made of fiberglass can increase the natural frequency of the wind duct body 1 and increase the avoidance margin, making it less likely for the wind duct body 1 and the truss supporting the wind duct body 1 to resonate, thereby improving the overall stability of the fan.

[0034] More preferably, the straight tube section is made of metal material, and the connecting portion is arranged on the inner wall of the straight tube section; the straight tube section made of metal material is easier to process, thereby reducing the difficulty of making the connecting portion.

[0035] Preferably, the connecting portion is a connecting hole, which passes through the side wall of the straight tube section. When installing, the guard net 2 can be installed on the inner side of the straight tube section through the bolt structure and the connecting hole. The position where the guard net 2 is connected to the connecting hole is preferably the annular rib of the guard net 2.

[0036] More preferably, the connecting holes are provided on the side wall of the straight tube section at intervals along the circumferential direction of the straight tube section.

[0037] As a preferred embodiment, the straight tube section includes a first section 6 and a second section 7, one end of the first section 6 is connected to the expansion section 3, and the end of the first section 6 away from the expansion section 3 is connected to the second section 7; the straight tube section is divided into a detachable first section 6 and a second section 7. During production, the first section 6 and the second section 7 with smaller volumes can be produced first, and then assembled into a complete straight tube section, thereby reducing the process difficulty during production of the straight tube section. At the same time, when a certain part (the first section 6 or the second section 7) is damaged, only the damaged part can be replaced, thereby reducing maintenance costs.

[0038] Preferably, the first section 6, the second section 7 and the expansion section 3 are connected vertically and integrally by bolts and locking nuts.

[0039] As a preferred embodiment, the wind duct main body 1 is a cylindrical structure. Furthermore, along the circumference of the wind duct main body 1, the wind duct main body 1 includes a plurality of splicing blocks 8, and the splicing blocks 8 are arc-shaped. Any two adjacent splicing blocks 8 are connected to each other to form a circular wind duct main body 1. This arrangement can divide the wind duct main body 1 into a plurality of units for production. On the one hand, it reduces the difficulty in producing the wind duct main body 1. On the other hand, when a certain position of the wind duct main body 1 is damaged, it is only necessary to replace the splicing block 8 corresponding to the damaged position, thereby reducing the maintenance cost of the wind duct main body 1.

[0040] Preferably, any two adjacent splicing blocks 8 are detachably connected via a bolt structure.

[0041] Furthermore, the splicing blocks 8 of the straight tube section are overlapped and connected with hexagon socket flat round head screws and hexagon socket countersunk head screws, and the splicing blocks 8 of the expansion section 3 are plugged in with bolts and locking nuts. This connection method retains the completeness of the wind tube to the greatest extent, and the connection is tight and beautiful.

[0042] As a preferred embodiment, a reinforcing plate 9 is provided at the connection part. The reinforcing plate 9 is a plate-like structure. The reinforcing plate 9 is connected to the wind duct body 1. The strength of the connection position can be improved by the reinforcing plate 9 to ensure the overall strength of the wind duct body 1 and the connection strength between the protective net 2 and the wind duct body 1.

[0043] It can be understood that: when the connecting portion is a connecting hole, the reinforcing plate 9 is installed corresponding to the position where the connecting hole is opened in the wind tube body 1, and a through hole corresponding to the connecting hole is opened on the reinforcing plate 9.

[0044] As a preferred embodiment, reinforcing ribs 10 are provided on the side walls of the wind duct body 1. The reinforcing ribs 10 are arranged along the circumference of the wind duct body 1. The reinforcing ribs 10 can improve the overall strength of the wind duct body 1 to ensure the stability of the wind duct body 1 during use.

[0045] Furthermore, the reinforcing rib 10 is a “V”-shaped protrusion punched out from the side wall of the wind tube body 1 .

[0046] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0047] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A wind tube structure for a conical protective net, characterized in that: include: A wind tube main body (1), wherein a connecting portion is provided on the inner wall of the wind tube main body (1); A protective net (2) is in a conical structure, and the large-diameter end of the protective net (2) extends into the interior of the wind tube body (1) and is connected to the connecting portion.

2. The wind tube structure for the conical protective net according to claim 1 is characterized in that: Along the centerline direction of the wind tube body (1), the wind tube body (1) comprises an expansion section (3) and a straight section, the expansion section (3) comprises a first end (4) and a second end (5), the size of the first end (4) is smaller than the size of the second end (5), the size of the first end (4) matches the size of the straight section, and the first end (4) is detachably connected to the straight section.

3. The wind tube structure for the conical protective net according to claim 2 is characterized in that: The expansion section (3) is made of glass fiber reinforced plastic.

4. The wind tube structure for the conical protective net according to claim 3 is characterized in that: The straight tube section is made of metal material, and the connecting portion is arranged on the inner wall of the straight tube section.

5. The wind tube structure for the conical protective net according to claim 4 is characterized in that: The connecting portion is a connecting hole arranged at intervals along the circumference of the straight tube section, and the protective net (2) is bolted to the connecting hole via a bolt assembly.

6. The wind tube structure for the conical protective net according to claim 2 is characterized in that: The straight tube section comprises a first section (6) and a second section (7), one end of the first section (6) is connected to the expansion section (3), and one end of the first section (6) away from the expansion section (3) is connected to the second section (7).

7. The wind tube structure for the conical protective net according to claim 1 is characterized in that: Along the circumference of the wind duct main body (1), the wind duct main body (1) comprises a plurality of splicing blocks (8), the splicing blocks (8) are arc-shaped, and any two adjacent splicing blocks (8) are connected to each other.

8. The wind tube structure for the conical protective net according to claim 7, characterized in that: Any two adjacent splicing blocks (8) are detachably connected via a bolt structure.

9. The wind tube structure for the conical protective net according to claim 1, characterized in that: The connecting portion is provided with a reinforcing plate (9).

10. The wind tube structure for the conical protective net according to claim 1, characterized in that: A reinforcing rib (10) is provided on the side wall of the wind tube body (1), and the reinforcing rib (10) is arranged along the circumference of the wind tube body (1).

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