Tunnel fan

Abstract

The utility model relates to a tunnel fan, which belongs to the technical field of fans and comprises a fan body, silencers are arranged at two ends of the fan body, a motor and an impeller are arranged in the fan body, the impeller is connected with an output end of the motor, an access hole is arranged on the upper side of the fan body, limit mechanisms are respectively arranged on two sides of the access hole, and the limit mechanisms are connected with the fan body. A sliding groove is reserved between the limiting mechanism and the fan body, a cover plate is arranged at the opening of the access hole, and the cover plate is connected with the sliding groove in a sliding mode. By arranging the slideable access hole for maintaining and overhauling the fan, the overhauling efficiency of the tunnel fan is improved, and the tunnel fan is simple in structure, convenient and practical.

Description

Technical Field

[0001] The utility model belongs to the technical field of fans, and in particular relates to a tunnel fan. Background Art

[0002] Tunnel fans are widely used in tunnels of water conservancy dam projects, highways, railways, subways, etc.

[0003] Chinese patent number CN214945123U discloses a tunnel fan that is easy to maintain. The fan has an access hatch on one side for easy maintenance. However, this design has certain drawbacks. Tunnel fans are generally fixed at a high location. During maintenance, the cover plate needs to be flipped upwards. Due to the lack of space above the tunnel fan, the cover plate cannot be flipped upwards, which makes maintenance work inconvenient. Therefore, a tunnel fan design is urgently needed. Utility Model Content

[0004] In order to overcome the defects of the prior art, the purpose of the present invention is to provide a tunnel fan for solving the problem of inconvenience in use in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A tunnel fan comprises a fan body, mufflers are provided at both ends of the fan body, a motor and an impeller are provided inside the fan body, the impeller is connected to the output end of the motor, an inspection port is provided on the upper side of the fan body, limiting mechanisms are provided on both sides of the inspection port, a slide groove is left between the limiting mechanism and the fan body, a cover plate is provided at the opening of the inspection port, and the cover plate is slidably connected to the slide groove.

[0007] According to the above technical solution, it is further preferred that L-shaped platforms are respectively provided at both ends of the inspection port, the L-shaped platforms are overlapped and connected with the cover plate, a number of fastening bolts are provided in the vertical direction of the L-shaped platforms, a number of screw holes are provided at the end of the cover plate, and the fastening bolts are threadedly connected to the screw holes.

[0008] Preferably, the fastening bolt is a T-bolt.

[0009] Preferably, a handle is provided on the cover plate.

[0010] Preferably, a sealing gasket is provided at the edge of the inspection opening.

[0011] Preferably, the inspection port is provided with a fixing seat, the fixing seat is provided with a push pin, the push pin is movably connected to the fixing seat, and a pressure spring is provided between the push pin and the fixing seat.

[0012] Preferably, a dustproof net is provided at the air inlet end of the fan body.

[0013] Preferably, reinforcing ribs are provided on the outer side surface of the cover plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model provides a tunnel fan, which is used for maintaining and repairing the fan by arranging a slidable inspection port, thereby improving the maintenance efficiency of the tunnel fan. The utility model has a simple structure and is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a device embodiment of the present utility model;

[0017] Figure 2 This is a structural diagram of the second embodiment of the device of the utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of a first embodiment of the device of the present utility model;

[0019] Figure 4 This is a right side structural diagram of the first embodiment of the device of the utility model;

[0020] Figure 5 This is a structural diagram of the first embodiment of the device of the utility model in the open state of the cover;

[0021] Figure 6 This is a structural diagram of the second embodiment of the device of the utility model in the open cover state.

[0022] In the figure: 1. Fan body, 2. Muffler, 3. Motor, 4. Impeller, 5. Inspection port, 6. Limiting mechanism, 7. Slide, 8. Cover, 9. L-shaped platform, 10. Fastening bolt, 11. Screw hole, 12. Handle, 13. Fixing seat, 14. Ejector pin, 15. Pressure spring, 16. Dust screen. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Example 1

[0025] like Figure 1 、 Figure 3 、 Figure 4 and Figure 5As shown, the utility model provides an embodiment of a tunnel fan, including a fan body 1, wherein silencers 2 are provided at both ends of the fan body 1, and the silencers 2 are fixed at both ends of the fan body duct to reduce the operating noise of the fan. A motor 3 and an impeller 4 are provided in the fan body 1, and the impeller 4 is connected to the output end of the motor 3. An inspection port 5 is provided on the upper side of the fan body 1, and a cover plate 8 is provided at the inspection port 5. A limiting mechanism 6 is provided on the outside of the cover plate 8, and a slide groove 7 is left between the limiting mechanism 6 and the fan body 1, and the cover plate 8 is slidably connected to the slide groove 7. Tunnel fans are generally installed at the top of the tunnel, which is relatively high. Tunnel fans in the prior art are inconvenient to inspect and maintain, and the silencers at both ends need to be removed before the fan body can be maintained, resulting in low inspection efficiency. In the embodiment of the present invention, a cover plate 8 is provided at the inspection opening 5. The cover plate 8 is movably connected to the fan body 1. When inspecting and maintaining the tunnel fan, the cover plate 8 is slid open to inspect and maintain the interior of the tunnel fan, thereby improving the efficiency of fan inspection. In the embodiment of the present invention, a limiting mechanism 6 is used to limit the upward and downward or forward and backward movement of the cover plate. Under the action of the limiting mechanism 6, the cover plate 8 can only slide left and right. When sliding to the left, the inspection opening is exposed. When sliding to the right, the cover plate 8 closes the inspection opening 5.

[0026] The limiting mechanism 6 is a U-shaped frame, and the limiting mechanism 6 is fixedly arranged at both ends of the inspection port 5. In the embodiment of the present utility model, the limiting mechanism 6 is an inverted U-shaped or U-shaped frame, and there are one or two limiting mechanisms 6. The limiting mechanism 6 is clamped at both ends of the cover plate 8 and fixedly connected to the fan body 1.

[0027] L-shaped platforms 9 are provided at both ends of the inspection port 5, and the L-shaped platforms 9 are overlapped and connected with the cover plate 8. A plurality of fastening bolts 10 are provided in the vertical direction of the L-shaped platforms 9, and a plurality of screw holes 11 are provided at the end of the cover plate 8, and the fastening bolts 10 are threadedly connected with the screw holes 11. In the embodiment of the present utility model, L-shaped platforms 9 are provided at both ends of the inspection port 5 for supporting the cover plate 8. As a better embodiment, L-shaped platforms 9 are provided at the edges of the inspection port 5 to facilitate supporting the cover plate 8 and better fit with the cover plate 8 to enhance the sealing. In order to increase the sealing between the cover plate 8 and the inspection port 5, a sealing gasket is provided at the edge of the inspection port 5. The sealing gasket is a rubber sealing gasket. When it is necessary to open the cover 8, the fastening bolts 10 at both ends of the cover 8 are opened, the cover 8 is lifted and slid upward, and the cover 8 slides to a fixed position along the outer wall of the fan body 1. In order to better limit the sliding position, a stop mechanism is provided on the fan body 1 to limit the sliding distance of the cover 8 so as to adjust the opening size of the inspection port 5.

[0028] The fastening bolt 10 is a T-shaped bolt. In the embodiment of the present invention, the fastening bolt 10 is a T-shaped bolt, which is more convenient for opening or tightening the fastening bolt 10.

[0029] The cover plate 8 is provided with a handle 12. The handle 12 facilitates lifting or sliding the cover plate 8 to a desired position. When the retaining mechanism 6 is provided as a single set, the handle 12 is positioned near the lower end of the cover plate 8. When the retaining mechanism 6 is provided as a dual set, the handle 12 is positioned midway between the two sets of retaining mechanisms 6.

[0030] The inspection port 5 is provided with a fixed seat 13, and the fixed seat 13 is provided with a push pin 14, and the push pin 14 is movably connected to the fixed seat 13, and a pressure spring 15 is provided between the push pin 14 and the fixed seat 13. In the embodiment of the present utility model, a fixed seat 13 is provided on one side of the fan body 1 at the junction of the cover plate 8 and the fan body 1, and a push pin 14 is provided on the fixed seat 13, and the push pin 14 is movably connected to the fixed seat 13, and a pressure spring is provided below the push pin 14, and the function of the pressure spring 15 is to keep the push pin 14 in a tendency to bounce upward. When the fastening bolt 10 is loosened, the cover plate 8 bounces upward under the action of the push pin 14 and the pressure spring 15, making it convenient for the cover plate 8 to cross the L-shaped platform 9 on both sides and slide to the outer wall of one side of the fan body 1, exposing the inspection port 5, and facilitating the inspection of the inside of the fan.

[0031] The air inlet end of the fan body 1 is provided with a dustproof net 16 .

[0032] The outer side of the cover plate 8 is provided with reinforcing ribs to increase the strength of the cover plate 8 and prevent deformation.

[0033] Example 2

[0034] like Figure 2 and Figure 6As shown, the present invention provides another embodiment of a tunnel fan. The difference between this embodiment and the first embodiment lies in the difference in the structure of the limiting mechanism 6. The fan comprises a fan body 1, wherein silencers 2 are provided at both ends of the fan body 1, a motor 3 and an impeller 4 are provided inside the fan body 1, and the impeller 4 is connected to the output end of the motor 3. An inspection port 5 is provided on the upper side of the fan body 1, and a cover plate 8 is provided at the inspection port 5. A limiting mechanism 6 is provided on the outside of the cover plate 8, and a slide groove 7 is left between the limiting mechanism 6 and the fan body 1. The cover plate 8 is slidably connected to the slide groove 7. In the embodiment of the present invention, the limiting mechanism 6 is a pressure plate made of an L-shaped arc plate, which is fixedly arranged on both sides of the inspection port 5. The connection can be fixed by welding or bolting. A slide groove 7 is formed between the inverted L-shaped pressure plates on both sides. The slide groove 7 is used to place the cover plate 8, and the cover plate 8 slides in the slide groove 7. In this embodiment, the width of the chute 7 is greater than the thickness of the cover plate 8. When the fan needs to be repaired, the cover plate 8 is lifted using the handle 12 provided on the cover plate 8, and the cover plate 8 is slid along the chute 7 to the side of the fan body 1, revealing the inspection port 5. The utility model provides a slidable inspection port for maintenance and repair of the fan, thereby improving the maintenance efficiency of the tunnel fan. The utility model has a simple structure and is convenient and practical.

[0035] L-shaped platforms 9 are respectively provided at both ends of the inspection port 5, and L-shaped grooves are provided at both ends of the cover plate 8. The L-shaped platforms 9 are overlapped and connected with the L-shaped grooves on the cover plate 8. A plurality of fastening bolts 10 are provided in the vertical direction of the L-shaped platform 9, and a plurality of screw holes 11 are provided at the end of the cover plate 8. The fastening bolts 10 are threadedly connected with the screw holes 11.

[0036] The fastening bolt 10 is a T-shaped bolt.

[0037] A sealing gasket is provided at the edge of the inspection opening 5 .

[0038] The inspection port 5 is provided with a fixing seat 13 , and the fixing seat 13 is provided with a push pin 14 . The push pin 14 is movably connected to the fixing seat 13 , and a pressure spring 15 is provided between the push pin 14 and the fixing seat 13 .

[0039] Of course, the above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A tunnel fan, comprising a fan body (1), characterized in that: The fan body (1) is provided with silencers (2) at both ends, the fan body (1) is provided with a motor (3) and an impeller (4), the impeller (4) is connected to the output end of the motor (3), an inspection port (5) is provided on the upper side of the fan body (1), a cover plate (8) is provided at the inspection port (5), a limiting mechanism (6) is provided on the outside of the cover plate (8), a slide groove (7) is left between the limiting mechanism (6) and the fan body (1), and the cover plate (8) is slidably connected to the slide groove (7).

2. A tunnel fan according to claim 1, characterized in that: The limiting mechanism (6) is a shaped frame, and the limiting mechanism (6) is fixedly arranged at both ends of the inspection opening (5).

3. The tunnel fan according to claim 1, characterized in that: The limiting mechanism (6) is a pressure plate, and the limiting mechanism (6) is fixedly arranged on both sides of the inspection opening (5).

4. The tunnel fan according to claim 1, characterized in that: L-shaped platforms (9) are respectively provided at both ends of the inspection port (5), L-shaped grooves are provided at both ends of the cover plate (8), the L-shaped platforms (9) are overlapped and connected with the L-shaped grooves, a plurality of fastening bolts (10) are provided in the vertical direction of the L-shaped platforms (9), a plurality of screw holes (11) are provided at the end of the cover plate (8), and the fastening bolts (10) are threadedly connected with the screw holes (11).

5. The tunnel fan according to claim 4, characterized in that: The fastening bolt (10) is a T-bolt.

6. The tunnel fan according to claim 4, characterized in that: A handle (12) is provided on the cover plate (8).

7. The tunnel fan according to claim 1, characterized in that: A sealing gasket is provided at the edge of the inspection opening (5).

8. The tunnel fan according to claim 7, characterized in that: The inspection port (5) is provided with a fixed seat (13), the fixed seat (13) is provided with a push pin (14), the push pin (14) is movably connected to the fixed seat (13), and a pressure spring (15) is provided between the push pin (14) and the fixed seat (13).

9. The tunnel fan according to claim 1, characterized in that: The air inlet end of the fan body (1) is provided with a dustproof net (16).

10. The tunnel fan according to claim 4, characterized in that: The outer side surface of the cover plate (8) is provided with reinforcing ribs.

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