Centrifugal fan coupling quick assembly full-enclosed protective cover

Abstract

The utility model discloses a centrifugal fan coupling quick -witted full -enclosed protective cover, including half casing (1) and apron (3), half casing (1) is the groove box type structure, and the lower part of half casing (1) is the square groove type, and the outer edge of half casing (1) top is arc and has the slot towards outside in the middle part, and a pair of half casing (1) opposite buckling forms the complete casing, and the top mouth (2) of two slot openings in the middle part of top is combined and forms the top mouth (2) of the slot towards opposite two outer sides, and apron (3) is installed on the top mouth (2), and apron (3) is arc tile shape, in the complete casing, the first shaft hole (4) and the second shaft hole (5) are opened respectively on the vertical direction opposite two side walls of the upper part vertical to the top mouth (2) slot, and the installation efficiency is promoted, and the installation and dismounting time is shortened significantly, and the maintenance is convenient, and routine maintenance does not need professional tool, and the protection level is improved, and can prevent dust from entering and short -time soaking completely, and the service life of equipment is prolonged, and the noise control is excellent, and the running noise is reduced obviously, and the working environment is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of IPC classification F04D29 / 054 devices for connecting or assembling shafts, and particularly relates to an improved shell structure technology for installing a protective cover on a centrifugal fan coupling to provide a closed protection function. This protective cover is mainly used to protect the centrifugal fan coupling from external environmental factors such as dust, debris, and moisture, while reducing operating noise and improving equipment safety and service life. Background Technology

[0002] Couplings play a vital role in wind turbine systems, and their main functions include:

[0003] 1. Power transmission: Connects the motor and the fan impeller shaft to transmit motion and torque.

[0004] 2. Vibration absorption: It has good shock absorption and vibration reduction effects, reducing noise and vibration during equipment operation.

[0005] 3. Deviation compensation: Allows for a certain degree of coaxiality deviation, and can simultaneously achieve the given maximum compensation value.

[0006] 4. Overload protection: It acts as a buffer when the equipment is overloaded, preventing damage to the equipment.

[0007] 5. Convenient maintenance: It protects mechanical equipment in case of generator failure, disassembly, or replacement.

[0008] The main types of fans that require couplings are centrifugal fans with coupling drives, such as the D-type centrifugal fan, as well as some large or high-pressure centrifugal fans.

[0009] The D-type or coupling-driven centrifugal fan features a cantilevered impeller and is connected to a drive motor via a coupling, making it suitable for applications requiring higher air pressure.

[0010] Large or high-pressure centrifugal fans require couplings to buffer vibration due to their high power and high speed; couplings can also compensate for installation deviations during long-distance transmission.

[0011] For fans operating in special environments, where couplings are required to buffer shocks and vibrations, there is a significant risk of axial displacement in the system.

[0012] The applications of couplings in wind turbines are not limited to the types mentioned above; they also play a crucial role in certain specialized applications. For example, in wind power generation, couplings connect the wind turbine and the generator, ensuring the stability and efficiency of power transmission. Furthermore, in industrial applications, couplings can reduce energy loss and improve equipment operating efficiency and lifespan. These application examples further demonstrate the importance of couplings in wind turbine systems. Although coupling drives are more expensive, they offer irreplaceable advantages in high-power, high-vibration applications.

[0013] As can be seen from the above, couplings play an irreplaceable role in fan systems. Therefore, it is even more necessary to install protective covers.

[0014] Patent application 202320115080.X specifically relates to an adjustable cover for a ventilator coupling; it includes two adjusting support plates, two inverted L-shaped sealing plates, and four frames. Each of the four frames has screw holes at the same height. Multiple vertically arranged height adjustment holes are provided on both sides of the adjusting support plates. Both sides of the two adjusting support plates are detachably connected to the frames via bolts and nuts. The lower part of one inverted L-shaped sealing plate is rotatably connected to the upper part of one adjusting support plate via a hinge. A connecting piece is fixed to the lower part of the other inverted L-shaped sealing plate, and the connecting piece is detachably connected to the other adjusting support plate via bolts and nuts. The two inverted L-shaped sealing plates overlap at the top, and multiple sets of vertically corresponding width adjustment holes are provided at the overlap point. Each set of width adjustment holes is fitted with bolts and nuts.

[0015] Patent application 201720833866.X discloses a high-performance fan coupling protective cover device, including a base and a cover fixedly installed on the upper end of the base. The front of the cover is provided with a sliding groove. A fan and a reducer are arranged inside the cover. A protective cover is provided at the front end of the reducer. A coupling is arranged between the protective cover and the reducer. The protective cover includes an outer ring, a sleeve, a pin and a mesh. The reducer is provided with an output shaft, gear four, gear three, an intermediate shaft, gear two, gear one and an input shaft.

[0016] Patent application 201720652502.1 discloses an improved wind turbine coupling protective cover, including a protective cover body, which is divided into a top cover and a base. The top cover and one side wall of the base are connected together by a hinge. A lug with a through bolt hole is provided between the top cover and the other side wall of the base. The top cover and the other side wall of the base are connected together by a bolt passing through the bolt hole.

[0017] Currently, the common types of centrifugal fan coupling protective covers on the market are as follows: Detachable protective covers: As described in patent CN307160309S, these use a pin and slewing bearing structure for quick disassembly, but their sealing performance is generally poor. Visible heat dissipation protective covers: These use an array of radially arranged through holes to achieve heat dissipation and visibility, but their protection level is low. Fully enclosed protective covers: As described in patent CN223282277U, these use an inner and outer side plate structure to solve the problem of exposed transmission components, but installation is relatively complex.

[0018] In summary, most protective covers require specialized tools or multiple people to install, resulting in low maintenance efficiency. Traditional designs cannot completely prevent fine particles from entering the coupling area. Fixed, fully enclosed protective covers may cause heat buildup, affecting equipment lifespan. Moreover, existing structures are not ideal for suppressing vibration and aerodynamic noise.

[0019] Existing coupling protective covers are inconvenient to install, disassemble, and maintain, and cannot simultaneously meet the requirement of effectively sealing the entire coupling. Utility Model Content

[0020] To address the aforementioned problems, this utility model designs a quick-installation fully enclosed protective cover for centrifugal fan couplings, resolving the technical issues of existing centrifugal fan coupling protective covers, such as inconvenient installation, insufficient sealing, poor heat dissipation, and limited noise control.

[0021] Therefore, this utility model provides a quick-installation fully enclosed protective cover for a centrifugal fan coupling, comprising: a half-shell and a cover plate. The half-shell has a slotted box structure, with a square slot at the bottom and an arc-shaped outer edge at the top with an outward-facing slot in the middle. A pair of half-shells are fastened together to form a complete shell. The two slots at the top center combine to form a top opening with slots facing opposite sides. A cover plate, shaped like an arc-shaped tile, is installed on this top opening. A first shaft hole and a second shaft hole are respectively opened on opposite side walls in the upper part of the complete shell, perpendicular to the vertical direction of the top opening slot.

[0022] The rear edge of the cover plate is hinged to one outer edge of the top opening. Correspondingly, the front edge of the cover plate overlaps one outer or front edge of the top opening. In particular, fasteners or hooks are fixed to the front edge of the cover plate and the front edge of the top opening, respectively. Furthermore, a set of shims is fixed to the lower side of the top opening.

[0023] Connecting wing nuts are installed at the opposite outer edges of the top of the pair of half-shells. In particular, a set of rib plates are lined on the inner wall of the opposite outer edges of the top of the half-shells.

[0024] The bottom edge of the outer side wall of the semi-shell is turned outward and connected to a bottom outer flange. Furthermore, T-shaped bottom slots are respectively opened at both ends of the bottom outer flange, and the bottom edge of the outer side wall of the semi-shell corresponding to the bottom slot has a sliding opening that is connected to it.

[0025] The upper and lower edges of the first and second shaft holes on the semi-shell are rolled inward to form an inner vertical folded edge.

[0026] Furthermore, to achieve the above objectives, this utility model is configured as follows:

[0027] In particular, the powder coating thickness of the semi-shell and cover plate is 60-80μm.

[0028] In particular, a sealing material is applied between the bottom of the outer fold and the corresponding adjacent inner fold. The sealing material is a silicone sealing strip with a Shore hardness of 50±5.

[0029] In particular, a small cooling fan can be built into the half-shell. Alternatively, heat dissipation fins can be installed on the surface of the half-shell.

[0030] In particular, a fixed copper heat pipe is threaded through and connected around the first and second shaft holes.

[0031] In particular, sound-absorbing polyurethane foam with a density of 30 kg / m³ is laid on the inner or outer walls of the semi-shell. 3 The thickness is 10mm. Alternatively, you can lay down porous sound-absorbing cotton as a sound-absorbing material.

[0032] In particular, the damping and shock-absorbing rubber pads are fixed at the top opening and the cover plate pressing area, or around the inner wall of the first shaft hole and the second shaft hole, or at the connection between the buckle and the hook seat, or at the hinge mounting position, or at the mounting position of the wing nut, bottom outer fold or inner vertical fold.

[0033] Compared with the prior art, the beneficial effects of this utility model are:

[0034] Improved installation efficiency and significantly reduced installation and disassembly time. Convenient maintenance; no specialized tools required for routine upkeep. Enhanced protection level, completely preventing dust ingress and short-term immersion. Extended equipment lifespan. Excellent noise control; significantly reduced operating noise, improving the working environment. Attached Figure Description

[0035] The following figures are illustrative and should not be construed as limiting the scope of this invention. Referring to the figures helps the reader understand the embodiments of this invention and further appreciate its advantages and technical features.

[0036] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention.

[0037] Figure 2 for Figure 1 Schematic diagram of the exploded structure.

[0038] Figure 3 This is a schematic diagram of the transmission side structure in Example 1.

[0039] Figure 4 for Figure 3 Schematic diagram of the hinge installation structure at point A.

[0040] Figure 5 for Figure 3 Schematic diagram of the installation structure of the wing nut at point B.

[0041] Figure 6 This is a schematic diagram of the material cutting, forming, and unfolding structure in Example 1.

[0042] Figure 7 This is a schematic diagram of the structure of Example 2.

[0043] The reference numerals in the figures include:

[0044] 1. Half shell, 2. Top opening, 3. Cover plate, 4. First shaft hole, 5. Second shaft hole, 6. Buckle, 7. Hook seat, 8. Hinge, 9. Butterfly nut, 10. Bottom outer folded edge, 11. Bottom slot, 12. Floor sliding opening, 13. Micro connecting line, 14. Saddle plate, 15. Inner vertical folded edge. Detailed Implementation

[0045] It should be noted that:

[0046] In the description of this utility model, unless otherwise expressly specified and limited, the terms "comprising" and "having," and any variations thereof, are intended to cover other possible options under the same logic not listed. For example, a process, method, system, product, or device comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or device. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the utility model product is in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Furthermore, terms such as "horizontal," "vertical," and "suspended" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. The terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components.

[0047] Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In case of any conflict, the definitions in this specification shall prevail.

[0048] The principle of this utility model lies in the fact that its core innovations include:

[0049] (1) The structural design facilitates quick installation, disassembly, and maintenance; a pair of half-shell mating couplings are used, combined with a butterfly nut locking mechanism, allowing for tool-free installation and disassembly. Simultaneously, the design incorporates folded edges on the half-shells and sliding limit locking via guide positioning grooves on the mounting bottom surface to ensure precise alignment between the protective cover and the coupling. Furthermore, a hinge-clasp structure is used to lock the top cover plate, enabling quick fixation and adapting to installation requirements.

[0050] (2) Fully enclosed protection design; precise material feeding through micro-connection line design, combined with dual-axis hole design, improves the accuracy of sealing structure, enhances the sealing protection level to reach IP67 standard, and effectively blocks the entry of debris and dust.

[0051] This utility model includes: a half-shell 1 and a cover plate 3.

[0052] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0053] Example 1: As shown in the attached document Figure 1 , 2 As shown in Figures 3, 4, and 5, the semi-shell 1 has a slotted box structure. The lower part of the semi-shell 1 is square-grooved, and the outer edge of the top of the semi-shell 1 is arc-shaped with a slot facing outward in the middle. A pair of semi-shells 1 are fastened together to form a complete shell. The two slots at the top center are combined to form a top opening 2 with slots facing outward on opposite sides. A cover plate 3 is installed on the top opening 2. The cover plate 3 is in the shape of an arc tile. In the upper part of the complete shell, a first shaft hole 4 and a second shaft hole 5 are respectively opened on the opposite side walls in the vertical direction of the slot in the top opening 2.

[0054] As described above, the rear edge of the cover plate 3 is hinged to one outer edge of the top opening 2 via a hinge 8. Correspondingly, the front edge of the cover plate 3 overlaps with one outer or front edge of the top opening 2. In particular, a latch 6 or a hook 7 is fixed to the front edge of the cover plate 3 and the front edge of the top opening 2, respectively. The cover plate 3 is tightly pressed onto the top opening 2 by the corresponding latch 6 and hook 7. Furthermore, a set of support plates 14 is fixed to the lower side of the opening rim of the top opening 2. This set of support plates 14 is used to support the edge of the cover plate 3.

[0055] As described above, connecting wing nuts 9 are installed at the opposite outer edges of the top of the pair of half-shells 1. In particular, a set of rib plates 14 are lined on the inner walls of the opposite outer edges of the top of the half-shells 1. After the pair of half-shells 1 are mated and fastened, the top structure of the pair of half-shells 1 is tightly connected by the wing nuts 9.

[0056] As mentioned above, the bottom edge of the outer side wall of the semi-shell 1 is turned outward and connected to a bottom outer flange 10. Furthermore, T-shaped bottom slots 11 are respectively opened at both ends of the bottom outer flange 10, and the bottom edge of the outer side wall of the semi-shell 1 corresponding to the bottom slot 11 is opened and connected to a ground sliding opening 12.

[0057] In the aforementioned, the upper and lower edges of the first shaft hole 4 and the second shaft hole 5 on the semi-shell 1 are rolled inward to form an inner vertical folded edge 15.

[0058] In this embodiment of the invention, the first shaft hole 4 and the second shaft hole 5 are respectively located on the motor side and the transmission side.

[0059] In this embodiment of the utility model, the sill plate 14 is welded and fixed as a baffle structure.

[0060] The implementation principle of this embodiment is as follows:

[0061] During installation, first fasten the two half-shells 1 onto both sides of the coupling. Simultaneously, engage the first shaft hole 4 and the second shaft hole 5 on the motor side and transmission side of the coupling's axial ends, respectively. Align and fit the corresponding inner vertical flanges 15 of the two half-shells 1 together. Meanwhile, press the outer bottom flange 10 of the half-shell 1 against the corresponding pre-drilled hole in the base. Secure it to the base with screws through the bottom slot 11. After the half-shells 1 are properly engaged, install the wing nut 9 to secure the top of the two half-shells 1, and then tighten the screws into the bottom slot 11. Then, press the cover plate 3 onto the top opening 2, and connect the corresponding latch 6 and hook seat 7 for locking.

[0062] During disassembly and maintenance, first remove the wing nut 9, unlock the latch 6 and hook seat 7, open the cover plate 3, and after loosening the screw on the bottom slot 11, slide the upper part of the screw into the sliding port 12 along the bottom slot 11 to separate the first shaft hole 4 and the second shaft hole 5, and easily disassemble the pair of half housings 1 from the coupling.

[0063] Preferably, the half-shell 1 and the cover plate 3 are surface treated with powder coating with a thickness of 60-80μm to improve the weather resistance of the half-shell 1 and the cover plate 3.

[0064] Preferably, the half-shell 1 and the cover plate 3 are made of 304 stainless steel plate with a thickness of 1.0 mm, which has high strength and corrosion resistance.

[0065] In this embodiment of the utility model, to improve the manufacturing and assembly accuracy of the half-shell 1 and the cover plate 3, as shown in the attached... Figure 6As shown, it is important to note that during the blanking process, a pair of half-shell 1 plates and a cover plate 3 plate need to be blanked simultaneously on the same plate. Then, the first shaft hole 4 and the second shaft hole 5, as well as the bottom slot 11 and the ground sliding opening 12 are punched out. Then, the bottom outer folded edge 10 and the inner vertical folded edge 15 are rolled one after another. In particular, the dividing line at the top connection of the pair of half-shell 1 is made into a micro-connecting line 13. At the same time, the cutting line on the edge of the cover plate 3 is also made into a micro-connecting line 13. After blanking, the plate is supported by the inner support mold, and the middle part is bent and rolled as a whole. Then, the edges of the side plates where the first shaft hole 4 and the second shaft hole 5 are located are aligned and welded. Finally, the cover plate 3 is removed from the formed structure, the micro-connecting line 13 at the top of the half-shell 1 is separated, and then the buckle 6, hook seat 7, wing nut 9, saddle plate 14 and hinge 8 are fixed respectively.

[0066] Example 2: As shown in the attached document Figure 7 As shown, when making the first shaft hole 4 and the second shaft hole 5, according to general rules, the first shaft hole 4 and the second shaft hole 5 are coaxial, and the inner diameter of the first shaft hole 4 is larger than that of the second shaft hole 5. Moreover, the wall of the second shaft hole 5 is turned outward.

[0067] In this embodiment, the second shaft hole 5 with the outward-turned edge of the hole wall and the corresponding inner vertical folded edge 15 that fit together enhance the supporting strength of the shell structure.

[0068] In this embodiment, in order to further improve the sealing performance, a sealing material is installed between the bottom of the outer fold 10 and the corresponding adjacent inner vertical fold 15.

[0069] In particular, the sealing material is a silicone sealing strip with a Shore hardness of 50±5 and a temperature resistance range of -40℃ to +200℃.

[0070] Example 3: Optimization scheme for improving heat dissipation;

[0071] An active cooling system is added; a small cooling fan is built into the half-shell 1, which is automatically started and stopped by a temperature sensor.

[0072] A passive heat dissipation design is added; heat dissipation fins are installed on the surface of the half-shell 1 to increase the heat dissipation area.

[0073] Heat pipe conduction technology is added: a fixed copper heat pipe is threaded through and connected to key heat-generating parts around the first shaft hole 4 and the second shaft hole 5 to quickly conduct heat. In particular, the copper heat pipe has a diameter of 6mm and a thermal conductivity ≥400W / m·K.

[0074] Example 4: To further enhance noise reduction measures, sound-absorbing material is laid on the inner or outer wall of the semi-shell 1. Alternatively, a damping and shock-absorbing structure is fixed at the fixing or connecting parts, including the pressing part between the top opening 2 and the cover plate 3, around the inner wall of the first shaft hole 4 and the second shaft hole 5, at the connection part between the buckle 6 and the hook seat 7, at the mounting position of the hinge 8, and at the mounting positions of the wing nut 9, the bottom outer folded edge 10, or the inner vertical folded edge 15. Furthermore, an airflow optimization design is provided along the edge of the top opening 2 and along the edges of the first shaft hole 4 and the second shaft hole 5, employing a gradually expanding sound-absorbing structure to reduce aerodynamic noise.

[0075] In particular, the sound-absorbing material is polyurethane foam with a density of 30 kg / m³. 3 Thickness 10mm.

[0076] In particular, the sound-absorbing material is porous sound-absorbing cotton, which absorbs high-frequency noise.

[0077] In particular, the damping and shock absorption structure is a rubber shock absorption pad, which reduces vibration transmission.

[0078] In the above embodiments of this utility model, installation efficiency is improved, reducing installation time from the traditional 15-30 minutes to 2-3 minutes. Maintenance is convenient, requiring no professional tools for daily maintenance. The protection level is improved, reaching the IP67 protection standard, completely preventing dust ingress and short-term immersion. The equipment's service life is extended. Noise control is excellent, reducing operating noise by 10-15 decibels, improving the working environment.

[0079] Based on the embodiments of this utility model described above, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this utility model.

Claims

1. A centrifugal fan coupling quick-mount fully enclosed protective cover, comprising a half-shell (1) and a cover plate (3); characterized in that, The half-shell (1) has a slotted box structure. The lower part of the half-shell (1) is square slotted. The outer edge of the top of the half-shell (1) is arc-shaped and has a slot facing outward in the middle. A pair of half-shells (1) are fastened together to form a complete shell. The two slots in the middle of the top end are combined to form a top opening (2) with slots facing outward on opposite sides. A cover plate (3) is installed on the top opening (2). The cover plate (3) is in the shape of an arc tile. The first shaft hole (4) and the second shaft hole (5) are respectively opened on the opposite side walls of the upper part of the complete shell in the vertical direction of the slots of the top opening (2).

2. The centrifugal fan coupling quick-mount fully enclosed protective cover according to claim 1, characterized in that, The rear edge of the cover plate (3) is hinged to one outer edge of the top opening (2) by a hinge (8), and the front edge of the cover plate (3) overlaps on one outer or front edge of the top opening (2); a buckle (6) or a hook seat (7) is fixed to the front edge of the cover plate (3) and the front edge of the top opening (2) respectively.

3. The centrifugal fan coupling quick-mount fully enclosed protective cover according to claim 1, characterized in that, A connecting wing nut (9) is installed on the top of the two halves of the housing (1) at their opposite outer edges.

4. The centrifugal fan coupling quick-mount fully enclosed protective cover according to claim 1, characterized in that, The bottom edge of the outer side wall of the semi-shell (1) is turned outward and connected to the bottom outer fold (10); T-shaped bottom slots (11) are opened at both ends of the bottom outer fold (10), and the bottom edge of the outer side wall of the semi-shell (1) corresponding to the bottom slot (11) is opened and connected to the ground sliding port (12).

5. The centrifugal fan coupling quick-mount fully enclosed protective cover according to claim 1, characterized in that, The upper and lower edges of the first shaft hole (4) and the second shaft hole (5) on the semi-shell (1) are rolled inward to form an inner vertical fold (15).

6. The centrifugal fan coupling quick-mount fully enclosed protective cover according to claim 1, characterized in that, At the point where the top opening (2) is pressed against the cover plate (3), or around the inner walls of the first shaft hole (4) and the second shaft hole (5), a damping and shock-absorbing rubber pad is fixed.

7. The centrifugal fan coupling quick-mount fully enclosed protective cover according to claim 1, characterized in that, A small cooling fan is built into the half-shell (1); or, cooling fins are provided on the surface of the half-shell (1).

8. The centrifugal fan coupling quick-mount fully enclosed protective cover according to claim 1, characterized in that, A fixed copper heat pipe is threaded through and connected around the first shaft hole (4) and the second shaft hole (5).

9. The centrifugal fan coupling quick-mount fully enclosed protective cover according to claim 1, characterized in that, Sound-absorbing polyurethane foam with a density of 30 kg / m³ is laid on the inner or outer wall of the semi-shell (1). 3 10mm thick; or, lay down porous sound-absorbing cotton as sound-absorbing material.

10. The centrifugal fan coupling quick-mount fully enclosed protective cover according to claim 5, characterized in that, A silicone sealing strip with a Shore hardness of 50±5 is installed between the inner vertical folds (15).

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