A high-strength composite material fan cover

Abstract

The utility model relates to a high-strength composite material fan cover, which comprises: an outer shell; an inner shell, the inner shell is arranged parallel to one side of the outer shell; a transition shell, the transition shell is integrally connected between the outer shell and the inner shell; a first reinforcement, the first reinforcement is arranged around the circumference of the transition shell, and is connected to the outer shell and the inner shell; a second reinforcement, the second reinforcement is arranged around the circumference of the transition shell, and is connected to the outer shell and the inner shell, and the first reinforcement and the second reinforcement are arranged alternately. The utility model high-strength composite material fan cover effectively improves the structural strength of the transition shell by alternately arranging the first reinforcement and the second reinforcement on the circumference of the transition shell. When the fan is working normally, the cover will not vibrate and deform. At the same time, the first reinforcement and the second reinforcement are arranged obliquely outward, which not only have the function of drainage, but also support the outer shell outward to avoid deformation of the outer shell.

Description

Technical Field

[0001] The utility model belongs to the technical field of fan equipment, and in particular relates to a high-strength composite material fan cover. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Fan is the customary abbreviation for gas compression and gas delivery machinery. 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; drying and selection of grains, wind tunnel wind sources and inflation and propulsion of hovercraft, etc.

[0003] The cover is an indispensable component of the fan. It is usually installed at the air inlet of the fan to prevent external rain and foreign objects from entering the fan, causing damage to the fan blades and affecting the service life of the fan.

[0004] The existing fan cover structure has low strength. When it is accidentally collided or squeezed by external force, it is very easy to deform inward, thereby interfering with the blades of the fan, affecting the normal operation of the blades and generating noise. Moreover, the deformation of the cover will also cause the shell to crack. It cannot effectively isolate the external rainwater in rainy weather, and it will also cause the blades inside the fan to rust, thus affecting the service life of the fan. Utility Model Content

[0005] The utility model provides a high-strength composite material fan cover, which solves the defects of the existing cover that the strength is low, it is easy to deform and the service life of the fan is affected.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a high-strength composite fan cover, made of glass fiber reinforced composite material, carbon fiber reinforced composite material, aramid fiber reinforced composite material or basalt fiber composite material, which includes:

[0007] outer shell;

[0008] An inner shell, the inner shell is arranged parallel to one side of the outer shell;

[0009] A transition shell, wherein the transition shell is integrally connected between the outer shell and the inner shell;

[0010] A first reinforcement member, which is arranged on the circumference of the transition shell and is connected to the outer shell and the inner shell;

[0011] The second reinforcement member is arranged on the circumference of the transition shell and is connected to the outer shell and the inner shell. The first reinforcement member and the second reinforcement member are arranged alternately.

[0012] Optimally, the first reinforcement member includes first ribs arranged at intervals on the circumferential surface of the transition shell and a drainage groove arranged between two adjacent first ribs.

[0013] Optimally, the second reinforcement member includes a second rib integrally provided on the circumferential surface of the transition shell and diagonal braces fixed on both sides of the second rib, and the included angle of the diagonal braces is 90°.

[0014] Optimally, the first rib includes a first adapter portion, a first fixing portion and a second fixing portion integrally connected on both sides of the first adapter portion, and a first inclined portion connecting the first fixing portion and the second fixing portion, the first adapter portion is integrally connected to the circumferential surface of the transition shell, the first fixing portion is integrally connected to the outer side of the inner shell, and the second fixing portion is integrally connected to a side of the outer shell close to the inner shell.

[0015] Optimally, the diagonal brace includes a second adapter portion, a third fixing portion integrally connected to one side of the second adapter portion, and a second inclined portion connecting the second adapter portion and the third fixing portion, the second adapter portion being integrally connected to the circumferential surface of the transition shell, and the third fixing portion being integrally connected to one side of the outer shell close to the inner shell.

[0016] Optimally, it also includes an outer baffle integrally connected to the outside of the outer shell and extending toward one side of the inner shell, an inner baffle integrally connected to the inside of the outer shell and extending toward one side of the inner shell, a fixing bar fixed between the outer baffle and the inner baffle, a first fixing hole passing through the inner shell, and a filter screen fixed on the inner shell, wherein the first fixing hole matches the position of the first reinforcement.

[0017] Optimally, the filter screen includes a filter screen body fixed on an inner shell, a through slot penetrating the filter screen body, mesh bars concentrically and evenly spaced inside the through slot, and an air duct arranged between two adjacent mesh bars.

[0018] Optimally, the filter screen further comprises a second fixing hole penetrating the filter screen body and cooperating with the first fixing hole, and a connecting strip fixed between the mesh strips.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] The utility model discloses a high-strength composite material fan cover, which effectively improves the structural strength of the transition shell by alternately arranging the first reinforcement member and the second reinforcement member on the circumference of the transition shell. When the fan is working normally, the cover will not vibrate and deform, avoiding interference with the blades of the fan. At the same time, the first reinforcement member and the second reinforcement member are arranged obliquely outward, which not only has the function of drainage, but also supports the outer shell outward to avoid deformation of the outer shell. The fan cover made of composite material has high strength, acid resistance, alkali resistance, aging resistance and the like, and effectively prolongs the service life of the cover.

[0021] Furthermore, the inner and outer stop bars can further improve the structural strength of the root of the first reinforcement member and the second reinforcement member, while also preventing the bolts from rusting;

[0022] Furthermore, the arrangement of concentric and evenly spaced mesh strips inside the filter can block the entry of foreign matter and avoid damage to the fan. At the same time, the area of ​​the air duct is large, which will not affect the normal circulation of air. At the same time, compared with horizontal and vertical grid grilles, the noise during air circulation is smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is the front view of the utility model;

[0025] Figure 3 It is a side view of the utility model;

[0026] Figure 4 This is a schematic structural diagram of the first reinforcement member of the utility model;

[0027] Figure 5 It is a structural schematic diagram of the second reinforcement member of the utility model;

[0028] Figure 6 It is a structural schematic diagram of the filter screen of the utility model;

[0029] Figure 7 This is the front view of the filter screen of the utility model;

[0030] Description of reference numerals:

[0031] 1. Outer shell; 2. Inner shell; 3. Transition shell; 4. First rib; 401. First adapter; 402. First fixing part; 403. Second fixing part; 404. First inclined part; 5. Drainage groove; 6. Second rib; 7. Diagonal support; 701. Second adapter; 702. Third fixing part; 703. Second inclined part; 8. Outer baffle; 9. Inner baffle; 10. Fixing bar; 11. First fixing hole; 12. Locking hole; 13. Filter body; 14. Through groove; 15. Second fixing hole; 16. Mesh bar; 17. Air duct; 18. Connecting bar. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0033] like Figure 1-3 The figure shows the structure of the high-strength composite fan housing of the utility model, which is usually installed on one side of the fan air inlet. When the fan is working normally, it prevents foreign objects from entering the fan and causing damage to the fan. At the same time, the structural strength of the housing is higher and will not crack or deform due to vibration. The fan housing includes an outer housing 1, an inner housing 2, a transition housing 3, a first reinforcement, a second reinforcement, an outer stop bar 8, an inner stop bar 9, a fixing bar 10, a first fixing hole 11, a locking hole 12 and a filter.

[0034] The fan housing is made of glass fiber reinforced composite material, carbon fiber reinforced composite material, aramid fiber reinforced composite material or basalt fiber composite material. The housing made of composite material is light in weight, convenient for transfer, transportation and subsequent installation. The composite material is also strong, and the housing will not deform or even crack when the fan is working for a long time, eliminating the need for subsequent maintenance and replacement, saving costs. The housing made of composite material is also acid-resistant, alkali-resistant and aging-resistant, which effectively extends the service life of the housing, is not easily eroded by rain and snow, can still be used normally in harsh environments, and is more versatile.

[0035] The outer side of the outer shell 1 is square, and a square groove is provided on the inner side of the outer shell 1 (i.e., the outer shell 1 is in the shape of a Chinese character “U”). The inner shell 2 is arranged parallel to one side of the outer shell 1, and the inner shell 2 is circular, and a circular groove is provided in the middle of the inner shell 2 to facilitate the entry of external air. The diameter of the inner shell 2 is smaller than the side length of the outer shell 1.

[0036] The transition housing 3 is integrally connected between the outer housing 1 and the inner housing 2. Since the inner housing 2 is arranged parallel to the outer housing 1 and the diameter of the inner housing 2 is smaller than the side length of the outer housing 1, the overall structure of the fan housing is as follows: Figure 3As shown. The transition shell 3 extends from the inner shell 2 to one side of the outer shell 1 in an open manner. When the blades in the fan rotate, they will not come into contact with the transition shell 3. In addition, the transition shell 3 is designed to be open. When it rains, rainwater is drained in time through the transition shell 3 to prevent rainwater from gathering at the connection between the cover and the fan and penetrating from the gap between the two, causing the fan blades to rust.

[0037] The first reinforcement member is arranged on the outer peripheral surface of the transition shell 3 to improve the structural strength of the side structure of the transition shell 3 to prevent the transition shell 3 from vibrating and cracking due to long-term operation of the fan. The first reinforcement member is composed of multiple reinforcement groups, such as Figure 4 As shown, each reinforcement group includes two first ribs 4 arranged at intervals and a drainage groove 5 arranged between the two first ribs 4.

[0038] The first rib 4 is used to fix the outer shell 1, the inner shell 2 and the transition shell 3 to improve the overall structural strength. Since the inner shell 2 is arranged parallel to the outer shell 1 and the diameter of the inner shell 2 is smaller than the side length of the outer shell 1, the drainage groove 5 is arranged obliquely.

[0039] After the fan cover is fixed to one side of the fan air inlet, when it rains, the rainwater is drained in time through the inclined drainage groove 5 to prevent rainwater from gathering at the connection between the cover and the fan and penetrating from the gap between the two, causing the fan blades to rust.

[0040] like Figure 4 , which is a schematic diagram of the structure of the first rib 4, the first rib 4 includes a first adapter portion 401, a first fixing portion 402, a second fixing portion 403 and a first inclined portion 404. The first adapter portion 401 is integrally connected to the outer peripheral surface of the transition shell 3 and matches the shape of the side surface of the transition shell 3. The first fixing portion 402 is integrally connected to one side of the first adapter portion 401 and is connected to the outer side wall of the inner shell 2. The second fixing portion 403 is integrally connected to the other side of the first adapter portion 401 and is connected to the side of the outer shell 1 close to the inner shell 2.

[0041] The first inclined portion 404 is used to connect the first fixed portion 402 and the second fixed portion 403 to improve the structural strength of the outer shell 1 and the inner shell 2. At the same time, the first inclined portion 404 is inclined to support the outer shell 1 outward to prevent the outer shell 1 from deforming toward the inner shell 2, which would cause a gap between the outer shell 1 and the fan air inlet and cause it to loosen.

[0042] The second reinforcement member is arranged on the outer peripheral surface of the transition shell 3 and is arranged alternately with the first reinforcement member. Figure 1 As shown, the first reinforcement member is used to improve the structural strength of the side structure of the transition shell 3, and the second reinforcement member is used to improve the structural strength of the four corners of the transition shell 3.

[0043] The second reinforcement member includes a second rib 6 and a diagonal brace 7. The second rib 6 is integrally arranged on the outer circumference of the transition shell 3, and the inner side of the second rib 6 is connected to the inner shell 2, and the outer side of the second rib 6 is connected to the outer shell 1. The diagonal brace 7 is integrally connected to the outer side of the second rib 6 and is respectively connected to the outer shell 1. The second rib 6 is used to improve the structural strength of the transition shell 3, and the diagonal brace 7 is used to improve the connection strength between the second rib 6 and the outer shell 1.

[0044] like Figure 2 As shown, the included angle of the diagonal braces 7 on both sides of the second rib 6 is 90°, and the inner side of the diagonal brace 7 is connected to the center of the second rib 6. When the fan is working, the force applied to the second rib 6 is evenly distributed, and the cover will not deform or vibrate due to uneven force.

[0045] like Figure 5 The figure is a schematic diagram of the structure of the diagonal brace 7, which includes a second adapter portion 701, a third fixing portion 702, and a second diagonal portion 703. The second adapter portion 701 is integrally arranged on the outside of the transition shell 3, the third fixing portion 702 is integrally arranged on the side of the outer shell 1 close to the inner shell 2, and the second diagonal portion 703 is used to connect the second adapter portion 701 and the third fixing portion 702. The second adapter portion 701, the third fixing portion 702, and the second diagonal portion 703 form a triangular structure, and the principle of triangular stability is used to increase the structural strength of the second rib 6 and the outer shell 1.

[0046] By alternately arranging the first reinforcement and the second reinforcement on the outer circumference of the transition shell 3, the structural strength between the outer shell 1, the transition shell 3 and the inner shell 2 can be improved. The inclined design of the first reinforcement and the second reinforcement can support the outer shell 1 outward to prevent the outer shell 1 from deforming and causing gaps in the air inlet of the fan. In addition, during the actual fixed installation, there is no need to distinguish the installation direction, which is more convenient for operators to install.

[0047] The outer baffle 8 is integrally arranged on the outer side of the outer shell 1 and extends toward the side close to the inner shell 2. The inner baffle 9 is integrally arranged on the inner side of the outer shell 1 and extends toward the side close to the inner shell 2. Figure 1 As shown, the inner baffle 9 passes through the first reinforcement and the second reinforcement, and the inner baffle 9 is arranged perpendicular to the first reinforcement and the second reinforcement to improve the structural strength of the connection between the first reinforcement and the second reinforcement and the outer shell 1.

[0048] The height of the inner baffle 9 is greater than that of the outer baffle 8, ensuring that the inner baffle 9 has sufficient contact area with the first reinforcement and the second reinforcement, ensuring that the connection is more stable. The fixing bar 10 is fixed between the inner baffle 9 and the outer baffle 8 to improve the connection strength between the inner baffle 9 and the outer baffle 8.

[0049] The first fixing hole 11 is arranged on the inner shell 2 and penetrates the inner shell 2. The first fixing hole 11 corresponds to the position of the first reinforcement member. The first fixing hole 11 is used to fix the filter screen. Since the opening of the first fixing hole 11 will reduce the structural strength of the inner shell 2, the position of the first fixing hole 11 is set on the inner side of the first reinforcement member, and the structural strength of the inner shell 2 is increased by the first reinforcement member.

[0050] The locking hole 12 passes through the outer shell 1, and the cover is fixed to the air inlet of the fan with bolts. Figure 2 As shown, the locking hole 12 is located between the inner baffle 9 and the outer baffle 8, and the outer baffle 8 and the inner baffle 9 shield the bolts to prevent the bolts from being corroded by rainwater and rusting, resulting in a gap between the cover and the fan air inlet.

[0051] The filter is fixed on the inner shell 2 to prevent foreign matter from entering the fan and causing damage to the fan when the fan is working normally. Figure 6 , 7 As shown, the filter screen includes a filter screen body 13, a through slot 14, a second fixing hole 15, a mesh bar 16, an air duct 17 and a connecting bar 18. A circular through slot 14 is provided on the inner side of the filter screen body 13 to ensure normal air circulation when the fan is working normally.

[0052] The second fixing hole 15 is arranged on the filter body 13 and matches the position of the first fixing hole 11 . The screws are passed through the second fixing hole 15 and the first fixing hole 11 , so as to fix the filter body 13 on the inner shell 2 .

[0053] The mesh bars 16 are annular and are concentrically and evenly spaced in the through grooves 14, and an air duct 17 is formed between two adjacent mesh bars 16. While blocking foreign matter from the outside, it will not affect the normal circulation of air (because the fixed bars 10 are concentrically and evenly spaced, the area of ​​the air duct 17 is larger, which will not affect the normal circulation of air. At the same time, compared with horizontal and vertical grid grilles, the noise during air circulation is smaller).

[0054] The connecting strips 18 are fixed between the mesh strips 16 and are used to connect the inner and outer mesh strips 16. Figure 6 , 7 As shown, the connecting strip 18 is arranged in a ring in the through groove 14, and the angle between two adjacent connecting strips 18 is 120°, which can not only realize the fixed connection of the mesh strip 16, but also will not cut the area of ​​the air duct 17 too small, thereby avoiding the generation of noise.

[0055] The utility model high-strength composite material fan cover effectively improves the structural strength of the transition shell 3 by alternately arranging the first reinforcement member and the second reinforcement member on the circumferential surface of the transition shell 3. When the fan is working normally, the cover will not vibrate and deform. At the same time, the first reinforcement member and the second reinforcement member are arranged obliquely outward, which not only has the function of drainage, but also supports the outer shell 1 outward to avoid deformation of the outer shell 1.

[0056] The inner and outer baffles 9 and 8 can further improve the structural strength of the roots of the first and second reinforcements, while also preventing the bolts from rusting. The arrangement of the concentric and evenly spaced mesh bars 16 inside the filter can block the entry of foreign matter and prevent damage to the fan. At the same time, the air duct 17 has a larger area, which will not affect the normal circulation of air. At the same time, compared with the horizontal and vertical grid grilles, the noise is smaller when the air circulates.

[0057] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-strength composite fan housing, characterized in that: The material is glass fiber reinforced composite material, carbon fiber reinforced composite material, aramid fiber reinforced composite material or basalt fiber composite material, which includes: An outer shell (1); An inner shell (2), wherein the inner shell (2) is arranged parallel to one side of the outer shell (1); A transition shell (3), wherein the transition shell (3) is integrally connected between the outer shell (1) and the inner shell (2); A first reinforcement member, the first reinforcement member is arranged in a ring shape on the circumference of the transition shell (3) and is connected to the outer shell (1) and the inner shell (2); A second reinforcement member, the second reinforcement member is arranged on the circumferential surface of the transition shell (3) and is connected to the outer shell (1) and the inner shell (2), and the first reinforcement member and the second reinforcement member are arranged alternately.

2. A high-strength composite fan housing according to claim 1, characterized in that: The first reinforcement member comprises first ribs (4) arranged at intervals on the circumference of the transition shell (3) and a drainage groove (5) arranged between two adjacent first ribs (4).

3. The high-strength composite fan housing according to claim 1, characterized in that: The second reinforcement member comprises a second rib (6) integrally arranged on the circumferential surface of the transition shell (3) and a diagonal brace (7) fixed on both sides of the second rib (6), wherein the included angle of the diagonal brace (7) is 90°.

4. The high-strength composite fan housing according to claim 2, characterized in that: The first rib (4) comprises a first adapter portion (401), a first fixing portion (402) and a second fixing portion (403) integrally connected to both sides of the first adapter portion (401), and a first inclined portion (404) connecting the first fixing portion (402) and the second fixing portion (403), wherein the first adapter portion (401) is integrally connected to the circumferential surface of the transition shell (3), the first fixing portion (402) is integrally connected to the outer side of the inner shell (2), and the second fixing portion (403) is integrally connected to a side of the outer shell (1) close to the inner shell (2).

5. The high-strength composite fan housing according to claim 3, characterized in that: The diagonal brace (7) comprises a second adapter portion (701), a third fixing portion (702) integrally connected to one side of the second adapter portion (701), and a second inclined portion (703) connecting the second adapter portion (701) and the third fixing portion (702), wherein the second adapter portion (701) is integrally connected to the circumferential surface of the transition shell (3), and the third fixing portion (702) is integrally connected to a side of the outer shell (1) close to the inner shell (2).

6. The high-strength composite fan housing according to claim 1, characterized in that: It also includes an outer baffle (8) integrally connected to the outer side of the outer shell (1) and extending toward one side of the inner shell (2), an inner baffle (9) integrally connected to the inner side of the outer shell (1) and extending toward one side of the inner shell (2), a fixing strip (10) fixed between the outer baffle (8) and the inner baffle (9), a first fixing hole (11) penetrating the inner shell (2), and a filter screen fixed on the inner shell (2), wherein the first fixing hole (11) matches the position of the first reinforcement member.

7. The high-strength composite fan housing according to claim 6, characterized in that: The filter comprises a filter body (13) fixed on an inner shell (2), a through slot (14) penetrating the filter body (13), mesh strips (16) arranged concentrically and equidistantly inside the through slot (14), and an air duct (17) arranged between two adjacent mesh strips (16).

8. The high-strength composite fan housing according to claim 7, characterized in that: The filter screen also includes a second fixing hole (15) penetrating the filter screen body (13) and cooperating with the first fixing hole (11), and a connecting strip (18) fixed between the mesh strips (16).

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