Hub protective cover of ventilator

Abstract

The protective cover comprises an outer plate and an inner plate, the outer plate is in threaded connection with a threaded rod along a center shaft, the inward end of the threaded rod is coaxially connected with a rotating seat, the inward end of the rotating seat is rotatably connected with a rotating rod, the inward end of the rotating rod is coaxially connected with the inner plate, and the inward face of the inner plate is provided with a sound insulation layer. An elastic cushion is arranged on the inward face of the sound insulation layer, a protective net is connected to the outer edge of the outer plate, the center of the protective net coincides with the center of the outer plate, and connecting assemblies are evenly arranged on the edge of the outward face of the protective net. In the ventilator, the inner plate is sealed in a concave position in the middle of a hub, the elastic cushion abuts against the hub, the hub is connected with a driving rod of a motor, and the hub is driven by the motor to rotate. A rotating shaft of the hub and a rotating shaft of the inner plate are located on the same straight line, the protective net covers the outer sides of the blades connected with the hub, and the connecting assembly is detachably connected with the inner wall of the cavity where the hub is located. The utility model has the advantages that the noise can be reduced, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilator accessories, in particular to a ventilator hub protective cover. Background Art

[0002] A ventilator is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is usually driven by a motor to rotate a hub with blades, and the rotating blades drive the gas flow.

[0003] A traditional wheel hub generally has a depression in the middle, and an air vortex is easily formed in the depression when the fan is taking in air, which hinders the fan from taking in air and increases the operating noise. In addition, no protective net is installed on the external air inlet of the fan cavity. There is a probability that the staff will put their hands into the cavity due to operational errors and be injured by the rotating blades, endangering the personal safety of the staff. Utility Model Content

[0004] The utility model aims to provide a fan hub protective cover, which has the advantages of reducing noise and improving safety.

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

[0006] The cam is connected to the wheel hub of the motor and the control wheel is connected to the wheel hub by the spring, and the control wheel is connected to the wheel hub by the spring.

[0007] Preferably, the connecting assembly includes a sliding groove, a sliding rod, a mounting plate, a spring telescopic rod, a suction cup, a cross plate, a fastening screw and a brake plate. The protective net is evenly provided with sliding grooves along the edge facing outward, the straight line where the sliding groove is located passes through the center of the outer plate, the sliding groove is slidably connected with a sliding rod, the end of the sliding groove away from the outer plate is provided with an opening for the sliding rod to extend out, the sliding groove is provided with a cross plate at the opening, the cross plate is threadedly connected with a fastening screw, the fastening screw is provided with a brake plate at one end of the sliding rod close to the sliding rod, the end of the sliding rod away from the outer plate is provided with a mounting plate, the side of the mounting plate away from the outer plate is evenly provided with spring telescopic rods, and the end of the spring telescopic rod away from the mounting plate is provided with a suction cup.

[0008] Preferably, the protective net is composed of a plurality of concentric rings and connecting rods connected between adjacent concentric rings, the spacing between adjacent concentric rings is equal, the sliding grooves are evenly distributed along the outermost concentric rings, and the sliding grooves are in the radial direction of the concentric rings.

[0009] Preferably, the number of the sliding slots is four.

[0010] Preferably, the number of the concentric rings is three.

[0011] The utility model has the following beneficial technical effects:

[0012] 1. The inner plate is used to seal the depression of the wheel hub to prevent the formation of air vortex in the depression when the fan takes in air, ensure smooth air intake of the fan, and reduce operating noise. The elastic pad uses its own elasticity to ensure sealing, reduce the probability of air entering the depression from the gap between the elastic pad and the wheel hub, and the sound insulation layer reduces noise by reducing the vibration transmitted by the wheel hub through the elastic pad, further reducing operating noise. The inner plate is allowed to obtain rotation ability through the combination of a rotating rod, a bearing and a rotating seat, and the rotation axis of the inner plate coincides with the rotation axis of the wheel hub. The elastic pad is indirectly connected to the inner plate through the sound insulation layer. When the wheel hub rotates due to the action of the motor, the elastic pad abutting against the wheel hub can rotate accordingly, reducing the friction between the wheel hub and the elastic pad while keeping the depression sealed to hinder the rotation of the wheel hub.

[0013] 2. A protective net is placed on the outside of the blades, and the blades are separated on the inside by the protective net to prevent workers from reaching into the cavity by mistake and being injured by the blades, thereby improving safety; the threaded rod is threadedly connected to the outer plate, and the inner plate is indirectly connected to the inward end of the threaded rod through a rotating rod and a rotating seat. The protective net is connected to the outer edge of the outer plate, and the relative position of the threaded rod on the outer plate is changed by rotating the threaded rod, thereby changing the distance between the inner plate and the protective net, thereby meeting the sealing needs of the recessed parts of the hubs at different positions in the cavities of various types of ventilators. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The technical solution of the utility model will be further described below in conjunction with the accompanying drawings.

[0015] Attached Figure 1 It is the front view of the utility model.

[0016] Attached Figure 2 for Figure 1 A magnified view of part A.

[0017] Attached Figure 3 It is a cross-sectional view from the left side of the utility model.

[0018] Attached Figure 4 for Figure 3 Enlarged view of part B.

[0019] Attached Figure 5 It is a cross-sectional view from the left side of the utility model in the ventilator.

[0020] In the figure: 1-outer plate, 2-inner plate, 3-threaded rod, 4-handle, 5-rotating seat, 6-bearing, 7-rotating rod, 8-sound insulation layer, 9-elastic pad, 10-protective net, 11-connecting assembly, 12-wheel hub, 13-motor, 14-blade, 15-cavity, 16-sliding groove, 17-sliding rod, 18-mounting plate, 19-spring telescopic rod, 20-suction cup, 21-cross plate, 22-fastening screw, 23-brake plate, 24-concentric rings, 25-connecting rod. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Example:

[0023] like Figures 1 to 5 As shown, this embodiment provides a fan hub protective cover, including an outer plate 1 and an inner plate 2, the outer plate 1 is threadedly connected to a threaded rod 3 along the central axis, the outward end of the threaded rod 3 is provided with a turning handle 4, the inward end of the threaded rod 3 is coaxially connected to a rotating seat 5, the inward end of the rotating seat 5 is rotatably connected to a rotating rod 7 through a bearing 6, the inward end of the rotating rod 7 is coaxially connected to the inner plate 2, the inner surface of the inner plate 2 is provided with a sound insulation layer 8, the inner surface of the sound insulation layer 8 is provided with an elastic pad 9, the outer edge of the outer plate 1 is connected to a protective net 10, and the protective net 10 is connected to the outer plate 1 coincides with the center of the inner plate 10, and the outer edges of the protective net 10 are evenly provided with connecting components 11. In the ventilator, the inner plate 2 is sealed in the depression in the middle of the hub 12, the elastic pad 9 is in contact with the hub 12, the hub 12 is connected to the driving rod of the motor 13 and the hub 12 is driven to rotate by the motor 13, the rotation axis of the hub 12 and the rotation axis of the inner plate 2 are in the same straight line, the protective net 10 is covered on the outer side of the blades 14 connected to the hub 12, and the connecting component 11 is detachably connected to the inner wall of the cavity 15 where the hub 12 is located.

[0024] The inner plate 2 is used to seal the depression of the wheel hub 12 to avoid the formation of an air vortex in the depression when the fan is intaken, thereby ensuring smooth air intake of the fan and reducing operating noise; the elastic pad 9 uses its own elasticity to ensure sealing, reducing the probability of air entering the depression from the gap between the elastic pad 9 and the wheel hub 12; the sound insulation layer 8 reduces noise by reducing the vibration transmitted by the wheel hub 12 through the elastic pad 9, further reducing operating noise; the inner plate 2 is allowed to obtain the ability to rotate by the use of the rotating rod 7, the bearing 6 and the rotating seat 5, and the rotation axis of the inner plate 2 coincides with the rotation axis of the wheel hub 12; the elastic pad 9 is indirectly connected to the inner plate 2 through the sound insulation layer 8; when the wheel hub 12 rotates due to the action of the motor 13, the elastic pad 9 abutting against the wheel hub 12 can rotate accordingly, thereby reducing the friction between the wheel hub 12 and the elastic pad 9 that hinders the rotation of the wheel hub 12 while keeping the depression sealed. A protective net 10 is placed on the outside of the blades 14, and the blades 14 are separated on the inside by the protective net 10 to prevent workers from reaching into the cavity 15 by mistake and being injured by the blades 14, thereby improving safety; the threaded rod 3 is threadedly connected to the outer plate 1, and the inner plate 2 is indirectly connected to the inward end of the threaded rod 3 through the rotating rod 7 and the rotating seat 5. The protective net 10 is connected to the outer edge of the outer plate 1, and the relative position of the threaded rod 3 on the outer plate 1 is changed by rotating the threaded rod 3, thereby changing the distance between the inner plate 2 and the protective net 10, thereby meeting the sealing needs of the recessed parts of the hub 12 located at different positions in the cavity 15 of various types of ventilators.

[0025] Furthermore, the connecting assembly 11 includes a sliding groove 16, a sliding rod 17, a mounting plate 18, a spring telescopic rod 19, a suction cup 20, a cross plate 21, a fastening screw 22 and a brake plate 23. The sliding grooves 16 are evenly arranged along the edge facing outward of the protective net 10. The straight line where the sliding groove 16 is located passes through the center of the outer plate 1. The sliding groove 16 is slidably connected with the sliding rod 17. The end of the sliding groove 16 away from the outer plate 1 is provided with an opening for the sliding rod 17 to extend out. The sliding groove 16 is provided with a cross plate 21 at the opening. The cross plate 21 is threadedly connected with a fastening screw 22. The end of the fastening screw 22 close to the sliding rod 17 is provided with a brake plate 23. The end of the sliding rod 17 away from the outer plate 1 is provided with a mounting plate 18. The side of the mounting plate 18 away from the outer plate 1 is evenly provided with spring telescopic rods 19. The end of the spring telescopic rod 19 away from the mounting plate 18 is provided with a suction cup 20.

[0026] Different ventilators have different sizes of cavities 15. The staff can move the sliding rod 17 along the sliding groove 16 and change the position of the sliding rod 17 on the sliding groove 16 to allow the mounting plate 18 connected to the end of the sliding rod 17 to be close to the inner wall of the cavity 15, so that the suction cup 20 can absorb the inner wall of the cavity 15. When the sliding rod 17 moves to the appropriate position, the brake plate 23 is pressed onto the sliding rod 17 by rotating the fastening screw 22, and the position of the sliding rod 17 on the sliding groove 16 is fixed by the friction between the brake plate 23 and the sliding rod 17. The inner wall of the cavity 15 has a certain arc shape, and the suction cup 20 is corrected by the elastic deformation ability of the connected spring telescopic rod 19, so that each suction cup 20 can be better absorbed on the inner wall of the cavity 15, thereby ensuring the connection strength between the protective net 10 and the inner wall of the cavity 15.

[0027] Furthermore, the protective net 10 is composed of a plurality of concentric rings 24 and connecting rods 25 connected between adjacent concentric rings 24 , the spacing between adjacent concentric rings 24 is equal, the sliding grooves 16 are evenly distributed along the outermost concentric rings 24 , and the sliding grooves 16 are in the radial direction of the concentric rings 24 .

[0028] Furthermore, the number of the sliding slots 16 is four.

[0029] Furthermore, the number of the concentric rings 24 is three.

[0030] The working principle and use process of this utility model:

[0031] During installation, the staff first places the protective net 10 at the outer opening of the cavity 15, aligns the inner plate 2 with the hub 12 in the cavity 15, and manipulates each connecting component 11 to connect the connecting component 11 to the inner wall of the cavity 15. Then the staff holds the handle 4 and rotates the threaded rod 3 to move the inner plate 2 inward to press on the hub 12, and seals the recess in the middle of the hub 12 to complete the installation.

[0032] The above are only specific application examples of the utility model, and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.

Claims

1. A fan hub protective cover, characterized in that: The invention comprises an outer plate and an inner plate, wherein the outer plate is connected with a threaded rod along a central axis, the outer end of the threaded rod is provided with a turning handle, the inner end of the threaded rod is coaxially connected with a rotating seat, the inner end of the rotating seat is rotatably connected with a rotating rod through a bearing, the inner end of the rotating rod is coaxially connected with the inner plate, the inner surface of the inner plate is provided with a sound insulation layer, the inner surface of the sound insulation layer is provided with an elastic pad, the outer edge of the outer plate is connected with a protective net, the protective net coincides with the center of the outer plate, and the outer edge of the protective net is evenly provided with connecting components. In the ventilator, the inner plate is sealed in a recess in the middle of the wheel hub, the elastic pad abuts against the wheel hub, the wheel hub is connected to a driving rod of a motor and the wheel hub is driven to rotate by the motor, the rotating axis of the wheel hub and the rotating axis of the inner plate are in the same straight line, the protective net cover is on the outer side of the blade connected to the wheel hub, and the connecting component is detachably connected to the inner wall of the cavity where the wheel hub is located.

2. A fan hub protective cover according to claim 1, characterized in that: The connecting assembly includes a sliding groove, a sliding rod, a mounting plate, a spring telescopic rod, a suction cup, a cross plate, a fastening screw and a brake plate. The protective net is evenly provided with sliding grooves along the edge facing outward, the straight line where the sliding groove is located passes through the center of the outer plate, the sliding groove is slidably connected with a sliding rod, the end of the sliding groove away from the outer plate is provided with an opening for the sliding rod to extend out, the sliding groove is provided with a cross plate at the opening, the cross plate is threadedly connected with a fastening screw, the fastening screw is provided with a brake plate at one end of the sliding rod close to the sliding rod, the end of the sliding rod away from the outer plate is provided with a mounting plate, the side of the mounting plate away from the outer plate is evenly provided with spring telescopic rods, and the end of the spring telescopic rod away from the mounting plate is provided with a suction cup.

3. A fan hub protective cover according to claim 2, characterized in that: The protection net is composed of a plurality of concentric rings and connecting rods connected between adjacent concentric rings. The spacing between adjacent concentric rings is equal. The sliding grooves are evenly distributed along the outermost concentric rings, and the sliding grooves are in the radial direction of the concentric rings.

4. A fan hub protective cover according to claim 3, characterized in that: The number of the sliding slots is four.

5. The fan hub protective cover according to claim 3, characterized in that: The number of the concentric rings is three.

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