Tunnel blasting ventilation device

Abstract

The invention provides a tunnel blasting ventilation device which comprises a ventilation box provided with an air inlet end used for air inlet, the air inlet end is provided with an air inlet plate, and the air inlet plate is provided with a plurality of air inlets; the filter plate is arranged in the ventilation box in a sliding mode and used for filtering impurities in airflow; and the driving unit is rotationally arranged in the ventilation box, connected with the filter plate and used for enabling the filter plate to do reciprocating motion in the radial direction of the ventilation box. Under the action of the air inlet plate and all the air inlets, external large impurities can be intercepted, the situation that internal devices are damaged due to the fact that the impurities enter the ventilation box is avoided, and therefore the certain service life is prolonged, airflow obtained after preliminary interception enters the ventilation box and rapidly passes through the filter plate, dust contained in air is intercepted by the filter plate, and the dust removal efficiency is improved. According to the tunnel ventilation device, external airflow can be introduced into a tunnel to guarantee the quality of air in the tunnel, visibility in the tunnel is provided, gas exhausted out of the tunnel is treated, and the quality of external air is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel ventilation, in particular to a tunnel blasting ventilation device. Background Art

[0002] When excavating in a tunnel, gunpowder is usually required for drilling and blasting. After the tunnel blasting is completed, the gas generated by the explosion of the explosives contains a large amount of dust. Due to the small space of the tunnel and poor ventilation conditions, the generated dust can easily pose a threat to construction workers.

[0003] In the existing tunnel ventilation operation, due to the long tunnel excavation, the outside air is usually sucked into and transported to the inside of the tunnel by installing an exhaust fan in the tunnel ventilation duct. However, since the function between the exhaust fan and the ventilation duct is relatively simple and only has the function of transporting the airflow, while exchanging the air, the dust in the air will also be transported to the external environment, causing the external environment to be polluted. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a tunnel blasting ventilation device, which solves the problem that the functions of the exhaust fan and the ventilation duct in the tunnel in the prior art are relatively simple and only have the function of transporting the airflow. While exchanging the air, the dust in the air will also be transported to the external environment, causing the external environment to be polluted.

[0005] According to an embodiment of the present invention, a tunnel blasting ventilation device comprises:

[0006] The ventilation box has an air inlet end for air intake, the air inlet end is provided with an air inlet plate, and the air inlet plate is provided with a plurality of air inlets;

[0007] A filter plate is slidably mounted on the ventilation box and is used to filter impurities in the air flow; and

[0008] The driving unit is rotatably arranged on the ventilation box and connected with the filter plate, and is used for making the filter plate reciprocate along the radial direction of the ventilation box.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] In this solution, the ventilation box is installed at the air inlet position of the ventilation duct so that the end of the ventilation box forms an air inlet end. When the fan in the ventilation duct is working, the external airflow enters the ventilation box. Under the action of the air inlet plate and each air inlet, larger impurities from the outside can be intercepted to avoid entering the ventilation box and causing damage to internal components, thereby extending the service life to a certain extent. At the same time, the airflow after preliminary interception enters the ventilation box and quickly passes through the filter plate, so that the filter plate intercepts the dust contained in the air. It can not only introduce the external airflow into the tunnel to ensure the quality of the air in the tunnel and provide visibility inside the tunnel, but also process the gas discharged from the tunnel to ensure the quality of the external air.

[0011] In this solution, with the cooperation of the driving unit, the driving unit can move in the ventilation box under the action of the airflow, so that the filter plate can reciprocate in the ventilation box, separating the impurities attached to the filter plate, ensuring the permeability of the filter plate during operation, ensuring the smooth passage of airflow, and preventing blockage due to long-term use, thereby optimizing the overall efficiency of the ventilation device.

[0012] Preferably, the driving unit includes a first mounting frame and a second mounting frame arranged in the ventilation box, an air guide fan arranged on the first mounting frame, a rotating disk arranged on the second mounting frame, and a driving frame arranged on the filter plate. The air guide fan is connected to the rotating disk, the rotating disk is fixed with a latch, the driving frame is provided with a driving groove, and the latch is slidably engaged with the driving groove.

[0013] Preferably, the air inlet plate is provided with a plurality of mounting seats corresponding to the plurality of air inlets, the plurality of mounting seats are rotatably provided with baffles, the mounting seats are provided with limiting portions, and the baffles abut against the limiting portions; the ventilation box is provided with a collection port, and the collection port is located between the filter plate and the air inlet plate.

[0014] Preferably, the first mounting frame is provided with a slot, the slot is slidably engaged with a sleeve, the guide fan is rotatably arranged on the sleeve, the rotating shaft of the rotating disk is provided with a limit block, the guide fan is provided with a mounting shaft, the end of the mounting shaft is provided with a limit slot, and the limit block is engaged with the limit slot.

[0015] Preferably, a torsion spring is provided on the mounting seat, and the torsion spring is connected to the rotation axis of the baffle.

[0016] Preferably, a material collection box is provided at the mouth of the material collection opening, and a dust collection bag is provided inside the material collection box.

[0017] Preferably, the ferrule is inlaid with a plurality of balls, and the balls are rollingly fitted with the inner side of the slot.

[0018] Preferably, a partition is slidably provided at the collecting port, and a connecting frame is slidably provided at the ventilation box, and two ends of the connecting frame are respectively connected to the ferrule and the partition.

[0019] Preferably, a mounting rod corresponding to the material collection opening is provided at the bottom of the ventilation box, a fixing seat is provided at the bottom of the ventilation box, the mounting rod is fixed on the fixing seat, and the material collection box is slidably arranged on the mounting rod.

[0020] Preferably, a nut is threadedly connected to the end of the mounting rod, and the nut abuts against the aggregate box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the ventilation device in an embodiment of the present invention.

[0022] Figure 2 Schematic diagram of the cross-sectional structure of the ventilation device in an embodiment of the present invention.

[0023] Figure 3 It is a bottom view structural schematic diagram of the ventilation device in an embodiment of the present invention.

[0024] Figure 4 Schematic diagram of the assembly structure of the baffle in an embodiment of the present invention.

[0025] Figure 5 Schematic diagram of the driving structure of the filter plate in an embodiment of the present invention.

[0026] Figure 6 It is a schematic diagram of the exploded structure of the installation shaft and the clamping block in the embodiment of the present invention.

[0027] Figure 7 It is a schematic diagram of the exploded structure of the first mounting bracket, the ferrule and the fan in the embodiment of the present invention.

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the ventilation box in an embodiment of the present invention.

[0029] In the above drawings: 1. ventilation box; 101. first mounting frame; 102. second mounting frame; 103. slot; 104. sleeve; 105. ball bearing; 106. collection port; 107. air inlet end; 2. air inlet plate; 201. air inlet; 202. mounting seat; 203. torsion spring; 204. baffle; 205. limiting part; 3. collection box; 301. dust bag; 302. fixing seat; 303. mounting rod; 304. nut; 4. filter plate; 401. driving frame; 402. driving slot; 5. fan guide; 501. mounting shaft; 502. limiting block; 503. limiting slot; 504. connecting frame; 6. rotating disk; 601. latch; 7. partition. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a tunnel blasting ventilation device, comprising:

[0032] The ventilation box 1 has an air inlet end 107 for air intake, the air inlet end 107 is provided with an air inlet plate 2, and the air inlet plate 2 is provided with a plurality of air inlets 201;

[0033] A filter plate 4 is slidably mounted on the ventilation box 1 and is used to filter impurities in the air flow; and

[0034] The driving unit is rotatably disposed on the ventilation box 1 and connected to the filter plate 4 , so as to make the filter plate 4 reciprocate radially along the ventilation box 1 .

[0035] In an embodiment of the present invention, the ventilation box 1 is installed at the air inlet position of the ventilation duct, so that the end of the ventilation box 1 forms an air inlet end 107 for air intake. When the fan in the ventilation duct is working, the external air flow enters the ventilation box 1 through the air inlet end 107, so that the air flow hits the air inlet plate 2 for the first time. Under the action of the air inlet 2 and each air inlet 201, larger external impurities can be intercepted to avoid entering the ventilation box 1 and causing damage to internal components, thereby extending the service life to a certain extent.

[0036] Secondly, the airflow after preliminary interception enters the ventilation box 1 and quickly passes through the filter plate 4, so that the filter plate 4 intercepts the dust contained in the air. It can not only introduce the external airflow into the tunnel to ensure the quality of the air in the tunnel and provide visibility inside the tunnel, but also process the gas discharged from the tunnel to ensure the quality of the external air.

[0037] Furthermore, the filter plate 4 is slidably arranged in the ventilation box 1, and with the cooperation of the driving unit, the driving unit can move in the ventilation box 1 under the action of the airflow, so that the filter plate 4 reciprocates in the ventilation box 1, and the impurities attached to the filter plate 4 are separated, thereby ensuring the permeability of the filter plate 4 during operation, ensuring the smoothness of the airflow, and preventing blockage due to long-term use, thereby optimizing the overall efficiency of the ventilation device.

[0038] Based on the above scheme, Figure 2 , Figure 5 and Figure 6 As shown, the driving unit includes a first mounting frame 101 and a second mounting frame 102 arranged in the ventilation box 1, a ventilating fan 5 arranged on the first mounting frame 101, a rotating disk 6 arranged on the second mounting frame 102, and a driving frame 401 arranged on the filter plate 4, the ventilating fan 5 is connected to the rotating disk 6, the rotating disk 6 is fixed with a latch 601, the driving frame 401 is provided with a driving groove 402, and the latch 601 is slidably engaged in the driving groove 402.

[0039] Specifically, when the filter plate 4 is driven by the driving unit, when the fan in the ventilation duct works, the airflow enters the ventilation box 1 and generates a certain pressure, and the guide fan 5 arranged on the first mounting frame 101 rotates under the pressure of the airflow to Figure 6 For example, the fan 5 rotates counterclockwise after being subjected to the airflow from right to left, so that the fan 5 rotates and drives the connected rotating disk 6 to rotate, so that the latch 601 on the rotating disk 6 performs a circular motion with the rotating disk 6 as the axis. The length of the driving groove 402 is the same as the diameter of the circular motion of the latch 601. When the latch 601 is located at the left and right ends of the rotating disk 6, the latch 601 is just located at the left and right ends of the driving groove 402. When the latch 601 is located at the left and right ends of the driving groove 402, the filter plate 4 It is just located in the center position of the ventilation box 1. When the pin 601 moves to the center position of the driving slot 402, the filter plate 4 moves to the upper or lower position in the ventilation box 1. Therefore, when the guide fan 5 is driven to rotate continuously under the action of the airflow, the pin 601 can reciprocate in the driving slot 402, so that the driving frame 401 drives the filter plate 4 to reciprocate in the ventilation box 1, separates impurities from the filter plate 4, reduces the adhesion rate of impurities to the filter plate 4, and improves the overall permeability of the filter plate 4.

[0040] Specifically, Figure 1 , Figure 2 and Figure 4 As shown, the air inlet plate 2 is provided with a plurality of mounting seats 202 corresponding to the plurality of air inlets 201, and the plurality of mounting seats 202 are all rotatably provided with baffles 204, and the mounting seats 202 are provided with limiting portions 205, and the baffles 204 abut against the limiting portions 205; the ventilation box 1 is provided with a collection port 106, and the collection port 106 is located between the filter plate 4 and the air inlet plate 2.

[0041] In the further dust removal work of the filter plate 4, in order to reduce the manpower input, the ventilation operation is performed by the ventilator in the ventilation duct sucking air, and the dust removal operation is performed by the ventilator in the ventilation duct blowing air. Under the long-term suction action of the ventilator in the ventilation duct, more impurities will be in the filter plate 4 and the space between the filter plate 4 and the air inlet plate 2. By switching the working mode of the ventilator, the ventilator is put into the blowing mode, and the airflow in the ventilation duct is transported to the ventilation box 1. According to the operation of the above-mentioned guide fan 5, the guide fan 5 is rotated by the force of the airflow, so that the filter plate 4 reciprocates. At the same time, under the action of wind force, the baffle 204 at the air inlet 201 is affected by the wind force and moves toward the position of the air inlet 201, so that the baffle 204 is forced to snap into the position of the air inlet 201, and the air inlet 201 is blocked. An external collecting tool is installed in the aggregate port 106, so that the aggregate port 106 forms an air outlet for dust removal, and the dust and impurities between the filter plate 4 and the air inlet plate 2 can be discharged through the aggregate port 106, thereby realizing the backwash cleaning of the filter plate 4, and there is no need to disassemble the filter plate 4 or manually clean the filter plate 4. Moreover, with the cooperation of the mounting seat 202 and the limiting portion 205, when the airflow enters the ventilation box 1 through the air inlet end 107, the baffle 204 is forced to abut against the limiting portion 205, so that the baffle 204 is in an inclined state, which neither affects the airflow entering the ventilation box 1 through the air inlet 201, nor makes it convenient for the baffle 204 to be forced to snap onto the air inlet 201 when the airflow recoils, so as to block the air inlet 201.

[0042] Among them, Figure 2 As shown, a torsion spring 203 is provided on the mounting seat 202, and the torsion spring 203 is connected to the rotating shaft of the baffle 204; the torsion spring 203 can provide a weaker rebound force for the baffle 204, and when there is no airflow passing through the air inlet 201, the baffle 204 is moved toward the limiting portion 205 by the action of the torsion spring 203, thereby ensuring that each air inlet 201 is normally opened when the tunnel is ventilated.

[0043] Specifically, Figure 2 , Figure 6 and Figure 7 As shown, the first mounting frame 101 is provided with a slot 103, and the slot 103 is slidably engaged with a sleeve 104, the guide fan 5 is rotatably arranged on the sleeve 104, the rotating shaft of the rotating disk 6 is provided with a limit block 502, the guide fan 5 is provided with a mounting shaft 501, and a limit groove 503 is provided at the end of the mounting shaft 501, and the limit block 502 is engaged with the limit groove 503.

[0044] In some other embodiments, in order to improve the normal filtering effect of the filter plate 4, when the ventilator in the ventilation duct is in the suction mode, the air flow in the tunnel enters the ventilation box 1 through the plurality of air inlets 201, so that the ducting fan 5 is pressurized and rotates to Figure 2 For example, in the initial state, the mounting shaft 501 and the limit block 502 are in a docking state, that is, the fan 5 and the first mounting frame 101 have a movable space, and the fan 5 can be moved toward the first mounting frame 101 under the action of the airflow, so that the fan 5 drives the mounting shaft 501 to separate from the limit block 502, and the filter plate 4 can be made stationary.

[0045] When the ventilator in the ventilation duct is in the blowing mode, the air in the ventilation duct flows in the opposite direction to the ventilation box 1. At this time, the ferrule 104 protrudes to the left side of the first mounting frame 101, so that the guide fan 5 is impacted by the airflow and drives the ferrule 104 to move from left to right on the first mounting frame 101, so that the limit groove 503 on the mounting shaft 501 is docked with the limit block 502 again, and the guide fan 5 is in a rotating state, and the filter plate 4 can be driven to reciprocate by the rotation of the guide fan 5, and the filter plate 4 is cleaned by dust recoil through the action of airflow recoil, and the movement of the filter plate 4 improves the cleaning quality of the filter plate 4. Among them, the size of the limit groove 503 is larger than the limit block 502, which ensures that the limit groove 503 and the limit block 502 can be conveniently docked, and also ensures that the mounting shaft 501 can normally drive the rotating disk 6.

[0046] Moreover, if Figure 7 As shown, the sleeve 104 is inlaid with a plurality of balls 105, and the balls 105 roll and fit with the inner side of the slot 103; under the action of the balls 105, the friction between the sleeve 104 and the slot 103 is reduced, and when the fan 5 drives the sleeve 104 to move on the first mounting frame 101, a certain smoothness can be provided to improve the transmission efficiency.

[0047] Specifically, Figure 1 and Figure 2 As shown, a material collecting box 3 is provided at the mouth of the material collecting opening 106 , and a dust collecting bag 301 is provided inside the material collecting box 3 .

[0048] During the airflow recoil process, the airflow after recoil carries the removed dust and impurities and is discharged through the collection port 106, and the airflow is discharged through the dust bag 301 of the collection box 3. The dust and impurities in the airflow are collected by the dust bag 301 for convenient unified treatment.

[0049] Secondly, if Figure 8As shown, the collection port 106 is slidably provided with a partition 7, and the ventilation box 1 is slidably provided with a connecting frame 504, and the two ends of the connecting frame 504 are respectively connected to the ferrule 104 and the partition 7; taking the air suction of the fan in the ventilation duct as an example, the fan guide fan 5 drives the ferrule 104 to protrude to the left side of the first mounting frame 101, and the ferrule 104 drives the connecting frame 504 set therein to move to the left in the ventilation box 1, so that the connecting frame 504 drives the partition 7 to close the collection port 106, avoiding the dust bag 301 of the collection box 3 from being sucked into the ventilation box 1, and when the fan is blowing, the ferrule 104 drives the connecting frame 504 set therein to move to the right in the ventilation box 1, thereby opening the collection port 106 for convenient collection.

[0050] Furthermore, if Figure 3 As shown, a mounting rod 303 corresponding to the collection port 106 is provided at the bottom of the ventilation box 1, and a fixed seat 302 is provided at the bottom of the ventilation box 1. The mounting rod 303 is fixed on the fixed seat 302, and the collection box 3 is slidably arranged on the mounting rod 303; in order to facilitate the disassembly of the collection box 3 for cleaning, when installing the collection box 3, the collection box 3 can be directly sleeved on the mounting rod 303, so when cleaning the internal dust bag 301, the collection box 3 can be directly pulled out, and, in addition, a nut 304 is threadedly connected to the end of the mounting rod 303, and the nut 304 abuts against the collection box 3. After the collection box 3 is installed on the mounting rod 303, the nut 304 can be screwed into the end of the mounting rod 303 to limit the collection box 3, thereby ensuring the installation stability of the collection box 3 and ensuring normal dust collection operation.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. Tunnel blasting ventilation device, characterized in that: include: The ventilation box (1) has an air inlet end (107) for air intake, the air inlet end (107) is provided with an air inlet plate (2), and the air inlet plate (2) is provided with a plurality of air inlets (201); A filter plate (4) is slidably mounted on the ventilation box (1) and is used to filter impurities in the airflow; as well as A driving unit is rotatably mounted on the ventilation box (1) and connected to the filter plate (4), and is used to cause the filter plate (4) to reciprocate radially along the ventilation box (1).

2. A tunnel blasting ventilation device according to claim 1, characterized in that: The driving unit comprises a first mounting frame (101) and a second mounting frame (102) arranged in the ventilation box (1), a ventilating fan (5) arranged on the first mounting frame (101), a rotating disk (6) arranged on the second mounting frame (102), and a driving frame (401) arranged on the filter plate (4), the ventilating fan (5) is connected to the rotating disk (6), the rotating disk (6) is fixedly provided with a latch (601), the driving frame (401) is provided with a driving groove (402), and the latch (601) is slidably engaged with the driving groove (402).

3. A tunnel blasting ventilation device according to claim 2, characterized in that: The air inlet plate (2) is provided with a plurality of mounting seats (202) corresponding to the plurality of air inlets (201); the plurality of mounting seats (202) are all rotatably provided with baffles (204); the mounting seats (202) are provided with a limiting portion (205), and the baffles (204) abut against the limiting portion (205); the ventilation box (1) is provided with a material collection port (106), and the material collection port (106) is located between the filter plate (4) and the air inlet plate (2).

4. A tunnel blasting ventilation device according to claim 3, characterized in that: The first mounting frame (101) is provided with a slot (103), the slot (103) is slidably engaged with a sleeve (104), the guide fan (5) is rotatably arranged on the sleeve (104), the rotating shaft of the rotating disk (6) is provided with a limit block (502), the guide fan (5) is provided with a mounting shaft (501), the end of the mounting shaft (501) is provided with a limit slot (503), and the limit block (502) is engaged with the limit slot (503).

5. The tunnel blasting ventilation device according to claim 3, characterized in that: The mounting seat (202) is provided with a torsion spring (203), and the torsion spring (203) is connected to the rotation axis of the baffle (204).

6. The tunnel blasting ventilation device according to claim 3, characterized in that: A material collection box (3) is provided at the mouth of the material collection opening (106), and a dust collection bag (301) is provided inside the material collection box (3).

7. The tunnel blasting ventilation device according to claim 4, characterized in that: The clamping sleeve (104) is inlaid with a plurality of balls (105), and the balls (105) are rollingly fitted with the inner side of the clamping groove (103).

8. The tunnel blasting ventilation device according to claim 4, characterized in that: The collecting port (106) is slidably provided with a partition (7), and the ventilation box (1) is slidably provided with a connecting frame (504), and the two ends of the connecting frame (504) are respectively connected to the ferrule (104) and the partition (7).

9. The tunnel blasting ventilation device according to claim 6, characterized in that: The bottom of the ventilation box (1) is provided with a mounting rod (303) corresponding to the material collection port (106), the bottom of the ventilation box (1) is provided with a fixing seat (302), the mounting rod (303) is fixed on the fixing seat (302), and the material collection box (3) is slidably arranged on the mounting rod (303).

10. The tunnel blasting ventilation device according to claim 9, characterized in that: The end of the mounting rod (303) is threadedly connected with a nut (304), and the nut (304) abuts against the material collection box (3).

Images