Jet fan for spiral tunnel

Abstract

The utility model provides a jet fan for a spiral tunnel, and relates to the technical field of jet fans, the jet fan comprises a fixed bottom plate, two ends of the surface of the fixed bottom plate are respectively provided with a group of threaded holes I in a penetrating manner, and two sides of the surface of the fixed bottom plate are respectively and fixedly connected with two L-shaped plates I. According to the device, the fixing bottom plate is installed on the inner wall of the spiral tunnel through the fixing bolts, the second L-shaped plate is installed on the other side of the first L-shaped plate, then the second mounting base is pushed into the mounting groove, the first fixing plate is completely embedded into the groove and fixed through the fixing bolts, the motor works to drive an impeller of the jet fan to rotate, and the jet fan is driven to rotate. And air is extracted from the right side of the device, at the moment, airflow evenly enters the gradually-expanding through groove through the flow equalizing filter screen, is accelerated through the gradually-expanding through groove and then is conveyed into the gradually-shrinking through groove through rotation of the jet fan impeller, then the airflow cross section is reduced through the gradually-shrinking through groove, the airflow flowing speed is increased, the airflow range is improved, and finally the airflow is exhausted from the left side of the gradually-shrinking through groove.

Description

Technical Field

[0001] This utility model relates to the field of jet fan technology, and in particular to a jet fan for spiral tunnels. Background Technology

[0002] A spiral tunnel is a three-dimensional curved tunnel, typically used in mountainous terrain or urban underground spaces where space is limited. It overcomes elevation differences or achieves turning by spiraling up / down. In addition to ventilation shafts, a jet fan is required inside the spiral tunnel to maintain airflow, exhaust smoke in case of fire, provide emergency ventilation, and dilute pollutants.

[0003] However, in existing technologies, jet fans are usually installed directly on the inner wall of the spiral tunnel. The jet fan is a whole unit, which is not convenient for later modular disassembly, maintenance and cleaning. On the other hand, commonly used jet fans have slow airflow velocity and short airflow range, which cannot have a good effect inside the spiral tunnel. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a jet fan for a spiral tunnel, comprising: a fixed base plate, wherein a set of threaded holes is provided through both ends of the surface of the fixed base plate, and two L-shaped plates are fixedly connected to both sides of the surface of the fixed base plate, one end of each of the two L-shaped plates is located between the opposite sides of the two sets of threaded holes, a plurality of ventilation grooves are provided on one side of the surface of each of the two L-shaped plates, a set of threaded holes is provided on the other side of the surface of each of the two L-shaped plates, and a pipe structure is provided at the other end of the two L-shaped plates, wherein a fan assembly is provided inside the pipe structure.

[0006] Furthermore, the pipeline structure includes two L-shaped plates, each with a set of threaded holes on one side surface, the two sets of threaded holes corresponding to the two sets of threaded holes, and multiple ventilation grooves on the other side surface of the two L-shaped plates.

[0007] Furthermore, the other end of the two L-shaped plates is fixedly connected to a mounting base. A groove is provided on one side of the mounting base. Threaded grooves are provided at the four corners of one side of the inner cavity of the groove. An installation groove is provided on one side of the inner cavity of the groove, and the installation groove is located between the opposite sides of the four threaded grooves.

[0008] Furthermore, a tapering groove is provided on one side of the inner cavity of the mounting groove, extending to the left. The size of the opening inside the tapering groove gradually decreases from right to left. A expanding groove is provided on the other side of the inner cavity of the mounting groove, extending to the right. The size of the opening inside the expanding groove gradually increases from left to right. The tapering groove, the mounting groove, and the expanding groove are interconnected. A flow equalization filter is fixedly embedded at the other end of the inner cavity of the expanding groove.

[0009] Furthermore, the fan assembly includes a fixing plate, which is movably embedded in the groove. Each of the four corners of the fixing plate has a threaded hole, which corresponds to a threaded groove. A handle is fixedly connected to the middle of one side of the fixing plate.

[0010] Furthermore, a mounting base two is fixedly connected to the other side of the fixing plate one. The mounting base two is movably embedded in the inside of the mounting groove. A fixing sleeve is fixedly embedded inside the mounting base two. Four fixing plates two are fixedly connected around one end of the surface of the fixing sleeve. The other ends of the four fixing plates two are fixedly connected around one end of the inner surface of the mounting base two. A conical base is fixedly connected to one end of the fixing sleeve.

[0011] Furthermore, a motor is fixedly installed inside the opening at the other end of the fixed sleeve, and the output end of the motor is fixedly connected to a jet fan impeller.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, a fixing base plate is installed on the inner wall of a spiral tunnel using fixing bolts, and an L-shaped plate two is installed on the other side of the L-shaped plate one to complete the installation and fixing of the mounting base one. Then, the mounting base two is pushed into the interior of the mounting groove so that the fixing plate one is completely embedded in the groove. Then, it is fixed by fixing bolts. This modular installation and fixing facilitates the later disassembly, maintenance and cleaning of the modules.

[0014] 2. In this utility model, when connected to an external power source, the motor drives the impeller of the jet fan to rotate, drawing gas from the right side of the device. At this time, the airflow enters the interior of the gradually expanding channel evenly through the flow equalization filter. After being accelerated by the gradually expanding channel, it is transported to the interior of the gradually contracting channel by the rotation of the jet fan impeller. Then, the airflow cross-section is reduced by the gradually contracting channel, increasing the airflow velocity and improving the airflow range. Finally, it is discharged from the left side of the gradually contracting channel. Through this setting, the airflow range is improved, and the airflow circulation inside the spiral tunnel is better. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of a jet fan for a spiral tunnel provided by this utility model;

[0016] Figure 2 Side view of a jet fan for a spiral tunnel provided by this utility model Figure 1 ;

[0017] Figure 3 Side view of a jet fan for a spiral tunnel provided by this utility model Figure 2 ;

[0018] Figure 4 A schematic diagram of the pipe structure of a jet fan for a spiral tunnel provided by this utility model;

[0019] Figure 5 A cross-sectional schematic diagram of the internal structure of a jet fan for a spiral tunnel provided by this utility model;

[0020] Figure 6 A schematic diagram of the fan assembly structure of a jet fan for a spiral tunnel provided by this utility model;

[0021] Figure 7 A side view of the fan assembly structure of a jet fan for a spiral tunnel provided by this utility model.

[0022] Legend:

[0023] 1. Fixed base plate; 101. Threaded hole one; 2. L-shaped plate one; 201. Ventilation groove one; 202. Threaded hole two; 3. Pipe structure; 301. L-shaped plate two; 302. Threaded hole three; 303. Ventilation groove two; 304. Mounting base one; 305. Groove; 306. Threaded groove; 307. Mounting groove; 308. Gradually narrowing through groove; 309. Gradually expanding through groove; 310. Flow equalization filter screen; 4. Fan assembly; 401. Fixed plate one; 402. Threaded hole four; 403. Handle; 404. Mounting base two; 405. Fixed sleeve; 406. Fixed plate two; 407. Conical base; 408. Motor; 409. Jet fan impeller. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-7This utility model provides a technical solution: a jet fan for a spiral tunnel, comprising: a fixed base plate 1, with a set of threaded holes 101 through-holes at both ends of the surface of the fixed base plate 1, and two L-shaped plates 2 fixedly connected to both sides of the surface of the fixed base plate 1, with one end of each L-shaped plate 2 located between the opposite sides of the two sets of threaded holes 101, multiple ventilation grooves 201 formed on one side of each L-shaped plate 2, and a set of threaded holes 202 formed on the other side of each L-shaped plate 2, with a pipe structure 3 provided at the other end of each L-shaped plate 2, and a fan assembly 4 provided inside the pipe structure 3.

[0026] Specifically: The device connects to external power supply equipment via a line to provide power to the internal electrical components. Threaded hole 101 is used to fix the base plate 1 to the inner wall of the spiral tunnel with fixing bolts. Ventilation slot 201 is used for ventilation to reduce wind resistance. Pipe structure 3 is used for airflow and for installing and fixing the fan assembly 4.

[0027] In one embodiment, the pipe structure 3 includes two L-shaped plates 301. Each of the two L-shaped plates 301 has a set of threaded holes 302 on one side surface, and the two sets of threaded holes 302 correspond to the two sets of threaded holes 202 respectively. Each of the two L-shaped plates 301 has a plurality of ventilation grooves 303 on the other side surface.

[0028] Specifically, such as Figure 2 , 3 As shown: Threaded hole 302 is used to mate with threaded hole 202 to complete the docking and installation of pipe structure 3 and L-shaped plate 2 through fixing bolts; ventilation groove 2 303 is used for ventilation to reduce wind resistance.

[0029] In one embodiment, the other end of the two L-shaped plates 301 is fixedly connected to the mounting base 304. A groove 305 is provided on one side of the mounting base 304. Threaded grooves 306 are provided at the four corners of one side of the inner cavity of the groove 305. A mounting groove 307 is provided on one side of the inner cavity of the groove 305. The mounting groove 307 is located between the opposite sides of the four threaded grooves 306.

[0030] Specifically, such as Figure 4 As shown: the groove 305 provides installation space for the fixing plate 401. After the fixing plate 401 is embedded in the groove 305, one side surface of the fixing plate 401 is flush with one side surface of the mounting base 304. The mounting groove 307 is used to install and fix the mounting base 404.

[0031] In one embodiment, a tapered channel 308 is provided through one side of the inner cavity of the mounting groove 307, and the size of the opening inside the tapered channel 308 gradually decreases from right to left. A gradually expanding channel 309 is provided through the other side of the inner cavity of the mounting groove 307, and the size of the opening inside the gradually expanding channel 309 gradually increases from left to right. The tapered channel 308, the mounting groove 307, and the gradually expanding channel 309 are interconnected. A flow equalization filter 310 is fixedly embedded at the other end of the inner cavity of the gradually expanding channel 309.

[0032] Specifically, such as Figure 5 As shown: The inner wall of the tapering channel 308 is set at a 20-30 degree slope from right to left, which is used to concentrate the airflow, increase the wind speed, increase the airflow range, and make the air delivery effect better. The inner wall of the expanding channel 309 is also set at a 20-30 degree slope from right to left, which is used to improve the airflow extraction capacity. The flow equalization filter 310 makes the airflow more uniform, reduces airflow noise, and filters out large-volume light objects carried in the airflow.

[0033] In one embodiment, the fan assembly 4 includes a fixing plate 401, which is movably embedded in the groove 305. Threaded holes 402 are provided through the four corners of the fixing plate 401, and the four threaded holes 402 correspond to the four threaded grooves 306 respectively. A handle 403 is fixedly connected to the middle of one side of the fixing plate 401.

[0034] Specifically, such as Figure 4 , 6 As shown: Threaded hole 402 is used to mate with threaded groove 306 to complete the docking and fixing of fixing plate 401 and groove 305 with fixing bolts; handle 403 is used to facilitate the installation and disassembly of fan assembly 4.

[0035] In one embodiment, a mounting base 404 is fixedly connected to the other side of the fixing plate 401. The mounting base 404 is movably embedded in the interior of the mounting groove 307. A fixing sleeve 405 is fixedly embedded in the interior of the mounting base 404. Four fixing plates 406 are fixedly connected to one end of the surface of the fixing sleeve 405. The other ends of the four fixing plates 406 are fixedly connected to one end of the inner surface of the mounting base 404. A conical base 407 is fixedly connected to one end of the fixing sleeve 405.

[0036] Specifically, such as Figure 6 , 7 As shown: the fixing plate 406 is used to fix and limit the fixing sleeve 405, and the conical base 407 is used to reduce the wind resistance at the tail of the fixing sleeve 405, so that the airflow can pass better through the interior of the mounting base 404.

[0037] In one embodiment, a motor 408 is fixedly embedded inside the opening at the other end of the fixed sleeve 405, and the output end of the motor 408 is fixedly connected to a jet fan impeller 409.

[0038] Specifically, such as Figure 6 As shown: The motor 408 drives the impeller 409 of the jet fan to rotate, drawing gas from the right side of the device. The airflow passes through the flow equalization filter 310 and enters the interior of the gradually expanding channel 309 evenly. After being accelerated by the gradually expanding channel 309, the airflow is conveyed to the interior of the gradually contracting channel 308 by the rotation of the jet fan impeller 409. Then, the airflow cross-section is reduced by the gradually contracting channel 308, the airflow velocity is increased, and the airflow range is improved. Finally, the airflow is discharged from the left side of the gradually contracting channel 308.

[0039] Working principle: When installing the jet fan inside a spiral tunnel, firstly, positioning holes are pre-drilled at the designated installation positions on the inner wall of the spiral tunnel. Then, fixing bolts are inserted into the positioning holes through the threaded holes 101 to complete the fixing and installation of the base plate 1. Then, the installation base 304 is lifted to the height of the other end of the L-shaped plate 2 by a tunnel-specific installation vehicle, so that the two L-shaped plates 301 are respectively aligned with one side surface of the two L-shaped plates 2.

[0040] Then, by fixing bolts, the L-shaped plate 201 and L-shaped plate 1 are installed inside the threaded hole 302 and threaded hole 202, respectively, and the mounting base 1 304 is installed and fixed. Then, the mounting base 2 404 is pushed into the mounting groove 307, so that the fixing plate 1 401 is completely embedded in the groove 305. Then, the fixing bolts are installed inside the threaded hole 402 and threaded groove 306, and the fixing plate 1 401 is installed and fixed.

[0041] This modular installation and fixation facilitates later module disassembly, maintenance, and cleaning.

[0042] Then, the external power supply is connected, and the motor 408 drives the jet fan impeller 409 to rotate, drawing gas from the right side of the device. At this time, the airflow enters the interior of the gradually expanding channel 309 evenly through the flow equalization filter 310. After being accelerated by the gradually expanding channel 309, it is transported to the interior of the gradually contracting channel 308 by the rotation of the jet fan impeller 409. Then, the airflow cross-section is reduced by the gradually contracting channel 308, the airflow velocity is increased, and the airflow range is improved. Finally, it is discharged from the left side of the gradually contracting channel 308.

[0043] This design increases the airflow range, allowing for better airflow circulation inside the spiral tunnel.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A jet fan for spiral tunnels, characterized in that, include: A fixed base plate (1) is provided. Both ends of the surface of the fixed base plate (1) are provided with a set of threaded holes (101). Two L-shaped plates (2) are fixedly connected to both sides of the surface of the fixed base plate (1). One end of each L-shaped plate (2) is located between the opposite sides of the two sets of threaded holes (101). Multiple ventilation slots (201) are provided on one side of each L-shaped plate (2). A set of threaded holes (202) is provided on the other side of each L-shaped plate (2). A pipe structure (3) is provided at the other end of each L-shaped plate (2). A fan assembly (4) is provided inside the pipe structure (3).

2. The jet fan for spiral tunnels according to claim 1, characterized in that: The pipe structure (3) includes two L-shaped plates (301). Each of the two L-shaped plates (301) has a set of threaded holes (302) on one side surface. The two sets of threaded holes (302) correspond to the two sets of threaded holes (202) respectively. Each of the two L-shaped plates (301) has multiple ventilation slots (303) on the other side surface.

3. A jet fan for spiral tunnels according to claim 2, characterized in that: The other end of the two L-shaped plates (301) is fixedly connected to a mounting base (304). A groove (305) is provided on one side of the mounting base (304). Threaded grooves (306) are provided at the four corners of one side of the inner cavity of the groove (305). An installation groove (307) is provided on one side of the inner cavity of the groove (305). The installation groove (307) is located between the opposite sides of the four threaded grooves (306).

4. A jet fan for spiral tunnels according to claim 3, characterized in that: A tapered channel (308) is provided on one side of the inner cavity of the mounting groove (307) extending to the left. The size of the opening inside the tapered channel (308) gradually decreases from right to left. A gradually expanding channel (309) is provided on the other side of the inner cavity of the mounting groove (307) extending to the right. The size of the opening inside the gradually expanding channel (309) gradually increases from left to right. The tapered channel (308), the mounting groove (307), and the gradually expanding channel (309) are interconnected. A flow equalization filter (310) is fixedly embedded at the other end of the inner cavity of the gradually expanding channel (309).

5. A jet fan for spiral tunnels according to claim 4, characterized in that: The fan assembly (4) includes a fixing plate (401), which is movably embedded in the groove (305). The four corners of the fixing plate (401) are provided with threaded holes (402), which correspond to four threaded grooves (306) respectively. A handle (403) is fixedly connected to the middle of one side of the fixing plate (401).

6. A jet fan for spiral tunnels according to claim 5, characterized in that: A mounting base two (404) is fixedly connected to the other side of the fixing plate one (401). The mounting base two (404) is movably embedded in the interior of the mounting groove (307). A fixing sleeve (405) is fixedly embedded in the interior of the mounting base two (404). Four fixing plates two (406) are fixedly connected around one end of the surface of the fixing sleeve (405). The other ends of the four fixing plates two (406) are fixedly connected around one end of the inner surface of the mounting base two (404). A conical base (407) is fixedly connected to one end of the fixing sleeve (405).

7. A jet fan for spiral tunnels according to claim 6, characterized in that: A motor (408) is fixedly installed inside the opening at the other end of the fixed sleeve (405), and the output end of the motor (408) is fixedly connected to a jet fan impeller (409).

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