Tunnel blasting ventilation equipment

Abstract

The utility model belongs to the technical field of blasting auxiliary equipment, and particularly relates to tunnel blasting ventilation equipment which comprises a seat body, a ventilation device and a ventilation device. The main body part is fixedly arranged on the seat body, the main body part is hollow, and a connecting port communicated with the interior of the main body part is formed in the main body part; the blowing fan comprises an air suction pipe, a turbine arranged in the air suction pipe and a bladeless nozzle arranged at the end part of the air suction pipe; the driving unit is arranged in the main body part and is used for driving the turbine to operate; the air inlet pipe is arranged on the main body part and used for communicating the interior of the main body part with the air environment outside the tunnel; wherein the air suction pipe is fixedly connected with the connecting port of the main body part through a flange plate arranged on the outer side of the air suction pipe, the air inlet end of the air suction pipe is located in the main body part, and compared with the prior art, the working stability of the tunnel blasting ventilation equipment is improved, and the service life of the blowing fan is prolonged.

Description

A tunnel blasting ventilation device Technical Field

[0001] This utility model belongs to the technical field of blasting auxiliary equipment, and in particular relates to a tunnel blasting ventilation device. Background Technology

[0002] In tunnel engineering operations, blasting is a common excavation method. However, when blasting is carried out inside the tunnel, a large amount of dust and harmful gases generated by the blasting will accumulate inside the tunnel. Therefore, ventilation equipment is needed to force ventilation inside the tunnel to prevent dust and harmful gases from affecting the health of the workers.

[0003] Existing tunnel blasting ventilation equipment typically uses forced-air fans with blades to drive airflow inside the tunnel, thereby expelling dust and harmful gases to the outside. However, due to the high dust content inside the tunnel after blasting, the fan blades tend to accumulate a large amount of dust over long-term use, reducing the fan's blowing efficiency and consequently decreasing the stability of the tunnel blasting ventilation equipment. Furthermore, it increases the load on the fan motor and reduces the fan's lifespan, thus necessitating improvements. Summary of the Invention

[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a tunnel blasting ventilation device, thereby effectively improving the stability of tunnel blasting ventilation equipment in use.

[0005] In view of this, the present invention provides a tunnel blasting ventilation device, comprising:

[0006] A base body that can be fixed to the wall or ground of the tunnel;

[0007] Also includes:

[0008] The main body is fixedly mounted on the base. The main body is hollow and has a connection port that communicates with its own interior.

[0009] A blower fan, the blower fan including an intake pipe, a turbine disposed inside the intake pipe, and a bladeless nozzle disposed at the end of the intake pipe;

[0010] A drive unit, which is disposed inside the main body and is used to drive the turbine to rotate;

[0011] An air inlet duct is installed on the main body to connect the interior of the main body with the external air environment of the tunnel.

[0012] The air intake pipe is fixedly connected to the main body via a flange located on its outer side, and the air inlet of the air intake pipe is located inside the main body. The air intake pipe uses a turbine to send air from the external environment of the tunnel into the bladeless nozzle.

[0013] In this technical solution, after tunnel blasting, the drive unit drives the turbine of the blower fan to rotate at high speed, thereby drawing air from the external environment of the tunnel into the main body through the air inlet pipe. Then, the external air enters the intake pipe through the air inlet end of the intake pipe, and then enters the bladeless nozzle and is ejected through the bladeless nozzle to form an air jet. Finally, forced ventilation is carried out in the tunnel to expel dust and harmful gases from the tunnel. Compared with the prior art, this utility model uses bladeless nozzles for ventilation inside the tunnel, which can effectively avoid the phenomenon of dust adhering to the fan blades, ensure the ventilation effect of the tunnel blasting ventilation equipment during long-term use, improve the working stability of the tunnel blasting ventilation equipment, and extend the service life of the blower fan.

[0014] In the above technical solution, the blower fan has three parts, which are respectively arranged on the upper surface, the lower surface and the surface near the tunnel axis of the main body.

[0015] In the above technical solution, furthermore, all three blowers drive the turbine to rotate through a drive unit.

[0016] In the above technical solution, the driving unit further includes:

[0017] A drive motor is fixedly installed inside the main body.

[0018] The transmission mechanism includes a transmission shaft connected to the drive end of a drive motor, a driven shaft connected to a turbine, and several transmission gears that drive the driven shaft to the transmission shaft.

[0019] In the above technical solution, the air inlet pipe further includes:

[0020] Filter plate, the filter plate is arranged inside the air inlet duct to filter the external air entering the main body;

[0021] A cleaning brush, which is arranged on the filter surface of the filter plate for cleaning the filter surface of the filter plate;

[0022] The collection box is located below the air inlet pipe. The top of the collection box has a dust collection port that communicates with the inside of the air inlet pipe and is located below the filter surface of the filter plate. The bottom of the collection box has an openable cover.

[0023] The cleaning brush is driven by a drive unit to clean the filter surface of the filter plate.

[0024] The beneficial effects of this utility model are:

[0025] 1. By using bladeless nozzle blowers for ventilation operations in tunnels, the accumulation of dirt on the blower blades can be avoided, improving the operational stability of tunnel blasting ventilation equipment and extending the service life of the blowers.

[0026] 2. Three blowers are distributed at different locations in the main body to quickly expel dust and harmful gases from the tunnel, improving ventilation efficiency. The three blowers are driven by a single drive motor, effectively utilizing the driving force of the drive motor.

[0027] 3. By installing a filter plate in the air inlet duct, the turbine can be further prevented from being contaminated by impurities in the external air, ensuring the working stability of the blower. Furthermore, cleaning the filter surface of the filter plate with a cleaning brush can ensure that the filter plate can work stably for a long time. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 is a schematic diagram of the structure of a specific embodiment of this utility model.

[0030] Figure 2 is a schematic diagram of the blower fan structure of this utility model.

[0031] Figure 3 is a schematic cross-sectional view of the blower fan of this utility model.

[0032] Figure 4 is a schematic diagram of the drive unit structure of this utility model.

[0033] Figure 5 is a schematic diagram of the air inlet pipe structure of this utility model.

[0034] The markings in the diagram are as follows:

[0035] 1. Base; 2. Main body; 3. Blower fan; 30. Intake pipe; 300. Air vent; 301. Output port; 31. Turbine; 32. Bladeless nozzle; 320. Cavity; 321. Annular slit; 4. Drive unit; 40. Drive motor; 41. Transmission shaft; 42. Driven shaft; 43. Drive gear; 44. Driven gear; 45. Driven bevel gear; 46. Driven bevel gear; 5. Air inlet pipe; 50. Filter plate; 51. Cleaning brush; 52. Collection box; 53. Shaft. Detailed Implementation

[0036] 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.

[0037] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0038] Example 1:

[0039] This application provides a tunnel blasting ventilation device, including: a base 1, which can be fixed to the wall or ground of the tunnel;

[0040] It also includes: a main body 2, which is fixedly mounted on the base 1. The main body 2 is hollow and has a connection port that communicates with its own interior; a blower fan 3, which includes an air intake pipe 30, a turbine 31 disposed inside the air intake pipe 30, and a bladeless nozzle 32 disposed at the end of the air intake pipe 30; a drive unit 4, which is disposed inside the main body 2 to drive the turbine 31 to operate; and an air inlet pipe 5, which is disposed on the main body 2 to connect the interior of the main body 2 with the external air environment of the tunnel.

[0041] The suction pipe 30 is fixedly connected to the connection port of the main body 2 through a flange arranged on its outer side, and the air inlet end of the suction pipe 30 is located inside the main body 2. The suction pipe 30 sends air from the external environment of the tunnel into the bladeless nozzle 32 through the turbine 31.

[0042] Furthermore, the base 1 has a conventional structure and can be a block-shaped fixing base with bolt holes. The side facing the tunnel can be formed into an arc or a plane depending on the installation situation to fit the tunnel wall or ground. The main body 2 can be a hollow box of cube or cuboid. The drive unit 4 is fixedly installed inside the main body 2. Preferably, the drive unit 4 is horizontally arranged with its drive end extending horizontally. The connection port is opened on the surface of the main body 2 facing the tunnel axis. Several bolt holes are distributed around the connection port on the side of the main body 2. The flange corresponds to the bolt holes. One end of the suction pipe 30 is a closed end, and the other end is provided with an output port 301. The air inlet end of the suction pipe 30 is composed of several air holes 300 opened on the side wall of the closed end of the suction pipe 30. The several air holes 300 are arranged around the circumference of the suction pipe 30. The turbine 31 is evenly distributed at one end of the intake pipe 30 with an outlet 301. The bladeless nozzle 32 is annular and has a cavity 320 inside. The outlet 301 of the intake pipe 30 is connected to the cavity 320. An annular slit 321 communicating with the cavity 320 is opened on one side of the inner circumference of the bladeless nozzle 32. The bladeless nozzle 32 can use the Bernoulli principle (Venturi effect) to create a low-pressure zone at the bladeless nozzle 32 through the high-speed rotation of the turbine 31, draw in external air and accelerate the jet, thereby performing forced ventilation in the tunnel. The air inlet pipe 5 can be connected to the external air environment of the tunnel through a conventional extension duct. In actual operation, in order to avoid the external environment being polluted by the tunnel ventilation operation, conventional dust suppression equipment, such as water mist spraying, can be installed at the tunnel entrance.

[0043] In this embodiment, after the tunnel blasting operation, the drive unit 4 drives the turbine 31 of the blower fan 3 to rotate at high speed, thereby drawing air from the external environment of the tunnel into the main body 2 through the air inlet pipe 5. Then, the external air enters the air inlet of the air intake pipe 30, and then enters the bladeless nozzle 32 and is ejected through the bladeless nozzle 32 to form an air jet. Finally, forced ventilation is carried out in the tunnel to expel dust and harmful gases from the tunnel. Compared with the prior art, this utility model uses a bladeless nozzle 32 for ventilation inside the tunnel, which can effectively avoid the phenomenon of dust adhering to the fan blades, ensure the ventilation effect of the tunnel blasting ventilation equipment during long-term use, improve the working stability of the tunnel blasting ventilation equipment, and increase the service life of the blower fan 3.

[0044] Example 2:

[0045] This embodiment provides a tunnel blasting ventilation device, which, in addition to the technical solution of the above embodiment, also has the following technical features: the blower fan 3 has three fans, which are respectively arranged on the upper surface, the lower surface and the surface near the tunnel axis of the main body 2.

[0046] All three blower fans 3 drive the turbine 31 through the drive unit 4.

[0047] The drive unit 4 also includes: a drive motor 40, which is fixedly installed inside the main body 2; and a transmission mechanism, the transmission structure of which includes a drive shaft 41 connected to the drive end of the drive motor 40, a driven shaft 42 connected to the turbine 31, and a plurality of transmission gears that drive the driven shaft 42 to drive the drive shaft 41.

[0048] Furthermore, correspondingly, three connection ports are provided on the main body 2, and the positions of the three blowers 3 are distributed accordingly.

[0049] Of the three blower fans 3, the turbine 31 of the blower fan 3 located on the surface of the main body 2 near the tunnel axis is directly connected to the drive shaft 41 via the driven shaft 42. The turbine 31 of the blower fans 3 located on the upper and lower sides of the main body 2 is connected to the drive shaft 41 via several transmission gears. The several transmission gears include a driving gear 43 arranged on the drive shaft 41 and rotating with the drive shaft 41, a driven gear 44 meshing with the driving gear 43, a driving bevel gear 45 rotating synchronously with the driven gear 44, and a driven bevel gear 46 meshing with the driving bevel gear 45. The driven bevel gear 46 is connected to the corresponding driven shaft 42 and drives the driven shaft 42 to rotate. The driving bevel gear 45 and the driven gear 44 can be connected by a conventional shaft. Each gear and each shaft is fixed and limited inside the main body 2 in a conventional way, such as by a support seat or support arm, which will not be described in detail in this embodiment.

[0050] In this embodiment, when the blower fan 3 is running, the drive motor 40 drives the transmission shaft 41 to rotate, thereby causing the drive gear 43 to drive each driven gear 44 to rotate. The drive bevel gear 45 rotates synchronously with the driven gear 44. Then, the driven bevel gear 46, which meshes with the drive bevel gear 45, rotates. Finally, the driven shaft 42 rotates with the driven bevel gear 46, driving the turbine 31 to rotate and drawing external air into the main body 2 through the air inlet pipe 5. Compared with the prior art, this utility model quickly discharges dust and harmful gases in the tunnel by distributing three blower fans 3 at different positions in the main body 2, which improves ventilation efficiency. Furthermore, the three blower fans 3 are driven by one drive motor 40, effectively utilizing the driving force of the drive motor 40.

[0051] Example 3:

[0052] This embodiment provides a tunnel blasting ventilation device. In addition to the technical solutions of the above embodiments, it also has the following technical features: the air inlet pipe 5 further includes: a filter plate 50, which is arranged inside the air inlet pipe 5 to filter the external air entering the main body 2; a cleaning brush 51, which is arranged on the filter surface of the filter plate 50 to clean the filter surface of the filter plate 50; and a collection box 52, which is located below the air inlet pipe 5. The top of the collection box 52 has a dust collection port that communicates with the inside of the air inlet pipe 5 and is located below the filter surface of the filter plate 50. The bottom of the collection box 52 has an openable cover.

[0053] The cleaning brush 51 is driven by the drive unit 4 to clean the filter surface of the filter plate 50.

[0054] Furthermore, a shaft 53 is rotatably installed inside the air inlet pipe 5. The shaft 53 is also connected to the drive gear 43 on the transmission shaft 41 through a driven bevel gear 46, a drive bevel gear 45, and a driven gear 44. The shaft 53 and the air inlet pipe 5 are also connected through a conventional support seat or support arm. Preferably, a conventional reduction gear set is also arranged between the shaft 53 and the driven bevel gear 46.

[0055] In this embodiment, when air from the external environment of the tunnel enters the main body 2 through the air inlet pipe 5, the filter plate 50 filters the external air once, preventing impurities in the external air from entering the main body 2 and adhering to the turbine 31. At the same time, as the drive motor 40 operates, the cleaning brush 51 is also driven to rotate, thereby cleaning the impurities filtered on the filter surface of the filter plate 50. The cleaned impurities fall downwards into the collection box 52 and are collected. The staff cleans the collection box 52 regularly. Compared with the prior art, this utility model can further utilize the driving force of the drive motor 40 to clean the filter plate 50, thereby ensuring that the filter plate 50 can perform filtering operations stably for a long time, further avoiding the turbine 31 being affected by impurities in the external air, improving the working stability of the tunnel blasting ventilation equipment, and increasing the service life of the blower fan 3.

[0056] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A tunnel blasting ventilation device, comprising: The base (1) is fixed to the wall or ground of the tunnel; characterized in that it further includes: a main body (2) fixedly mounted on the base (1), the main body (2) being hollow and having a connection port communicating with its own interior; a blower fan (3) including an air intake pipe (30), a turbine (31) disposed in the air intake pipe (30), and a bladeless nozzle (32) disposed at the end of the air intake pipe (30); and a drive unit (4). Unit (4) is installed inside the main body (2) to drive the turbine (31) to operate; air inlet pipe (5) is installed on the main body (2) to connect the inside of the main body (2) with the external air environment of the tunnel; wherein, the air intake pipe (30) is fixedly connected to the connection port of the main body (2) through a flange arranged on its outer side and the air intake end of the air intake pipe (30) is located inside the main body (2), and the air intake pipe (30) sends the air of the external environment of the tunnel into the bladeless nozzle (32) through the turbine (31).

2. The tunnel blasting ventilation equipment according to claim 1, characterized in that: The blower (3) has three parts, which are respectively arranged on the upper surface, the lower surface and the surface near the tunnel axis of the main body (2).

3. The tunnel blasting ventilation equipment according to claim 2, characterized in that: The three blowers (3) all drive the turbine (31) through the drive unit (4).

4. A tunnel blasting ventilation device according to claim 3, characterized in that, The drive unit (4) further includes: a drive motor (40), which is fixedly installed inside the main body (2); and a transmission mechanism, which includes a drive shaft (41) connected to the drive end of the drive motor (40), a driven shaft (42) connected to the turbine (31), and a plurality of transmission gears that drive the driven shaft (42) and the drive shaft (41) to transmit power.

5. A tunnel blasting ventilation device according to claim 4, characterized in that, The air inlet pipe (5) further includes: a filter plate (50), which is arranged inside the air inlet pipe (5) to filter external air entering the main body (2); a cleaning brush (51), which is arranged on the filter surface of the filter plate (50) to clean the filter surface of the filter plate (50); and a collection box (52), which is located below the air inlet pipe (5), with a dust collection port at the top of the collection box (52) communicating with the inside of the air inlet pipe (5) and the dust collection port located below the filter surface of the filter plate (50), and an openable cover at the bottom of the collection box (52); wherein the cleaning brush (51) is driven by the drive unit (4) to clean the filter surface of the filter plate (50).

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