A cooling and dust removal box

Abstract

The present invention provides a cooling and dust removal box, which comprises a box body, a dust removal mechanism, a cooling pipeline, an air inlet pipeline and a sedimentation tank. The cooling pipeline is arranged inside the box body and penetrates through the lower ends of the left and right sides of the box body at both ends. Air volume controllers are provided at the joints of the two ends of the cooling pipeline and the box body. A cooling pipe is arranged inside the cooling pipeline. The air inlet pipeline is installed at the upper left end of the box body, with one end outside the box body and the other end inside the box body and communicated with the middle part of the cooling pipeline. The dust removal mechanism is installed at the upper right end of the box body, with one end communicated with the middle part of the cooling pipeline and the other end communicated with the outside of the box body. The sedimentation tank is placed at the bottom side inside the box body. A first sprayer is provided on the upper side inside the air inlet pipeline. The present invention can effectively cool and remove dust from the air introduced into the box body, and the air after cooling and dust removal carries moisture and is introduced into the tunnel, further reducing dust and temperature in the tunnel environment, and avoiding the influence of high temperature and high dust in the tunnel on the health of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction equipment, and particularly to a cooling and dust removal box. Background Art

[0002] The starting and ending mileage of the right tunnel of Beiling Tunnel is YK4+695~YK8+520, with a total length of 3,825 meters. The excavation is carried out by connecting the construction channels of the left and right lines to enter the right tunnel. The large and small mileage of the right tunnel are constructed in parallel, and the ventilation method is forced ventilation. One 200KW*2 type tunnel special axial flow ventilator is configured in the right tunnel to supply ventilation for the large and small mileage of the right tunnel. A φ1800mm-20-meter / section antistatic and flame-retardant flexible air duct is used as the main air duct in the inclined shaft part. After reaching the three-way intersection of the inclined shaft, traditional three-way air ducts are used for shunting to achieve the purpose of simultaneous ventilation of the large and small mileage.

[0003] During the subsequent construction process, due to the deterioration of the surrounding rock grade in the small mileage inlet section of the right line, the project uses the double-side drift method for construction. During the initial spraying support operation of the muck in the drift, the air quality at the working surface is poor and the dust is large, so it is necessary to increase the ventilation volume. Although the traditional three-way air duct achieves the purpose of shunting, it cannot control the ventilation volume. In addition, the construction site belongs to a typical subtropical monsoon climate, with an annual average temperature of 20~25℃, the hottest months are July and August, with an average temperature of 33~37℃, and the extreme maximum temperature is 42.3℃. Coupled with the heat emitted by the operation of construction machinery in the tunnel and the hydration heat released during the solidification of the large-volume concrete in the secondary lining part, the measured temperature at the secondary lining working surface of the tunnel reaches up to about 35℃. Due to the high temperature in the tunnel, the phenomenon of workers leaving their jobs occurs frequently, affecting the construction progress. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a cooling and dust removal box, which can effectively cool and remove dust from the air introduced into the box body, and the cooled and dust-removed air contains moisture and is introduced into the tunnel to further reduce dust and temperature in the tunnel environment, avoiding the influence of high temperature and high dust in the tunnel on the health of workers.

[0005] According to an embodiment of the present invention, a cooling and dust removal box includes a box body, a dust removal mechanism, a cooling pipeline, an air inlet pipeline, and a sedimentation tank. The cooling pipeline is arranged inside the box body and penetrates through the lower ends of the left and right sides of the box body at both ends. Air volume controllers are provided at the connections between the two ends of the cooling pipeline and the box body. A cooling pipe is arranged inside the cooling pipeline. The air inlet pipeline is installed at the upper left end of the box body, with one end outside the box body and the other end inside the box body and communicating with the middle part of the cooling pipeline. The dust removal mechanism is installed at the upper right end of the box body, with one end communicating with the middle part of the cooling pipeline and the other end communicating with the outside of the box body. The sedimentation tank is placed at the bottom side inside the box body. A first sprayer is provided on the upper side inside the air inlet pipeline. The sedimentation tank is used to collect the water in the cooling pipe, the cooling pipeline, and the dust removal mechanism.

[0006] Preferably, the air volume controller includes two slide rails and a baffle. The two slide rails are respectively fixed at the upper and lower ends of the connection between the cooling pipeline and the box body. The baffle is placed between the two slide rails and can slide back and forth along the slide rails. The baffle can completely block the cooling pipeline at a certain moment.

[0007] Preferably, the cooling pipeline is in an inverted V shape. A cooling pipe is arranged along the axis on both sides of the cooling pipeline. The lower sides of the left and right ends of the cooling pipeline are communicated with a first water outlet pipe. The lower end of the cooling pipe is communicated with a second water outlet pipe.

[0008] Preferably, the sedimentation tank includes a sedimentation pond and a purification pond. A partition is provided between the sedimentation pond and the purification pond. A filter plate is provided above the partition. The lower end of the first water outlet pipe is placed in the sedimentation pond. The lower end of the second water outlet pipe is placed in the purification pond;

[0009] A water pump and a water storage tank are provided at the top of the box body. Both ends of the water pump are communicated with the purification pond and the water storage tank respectively, for pumping the water in the purification pond into the water storage tank. The first sprayer is communicated with the water storage tank.

[0010] Preferably, the dust removal mechanism includes a dust removal pipeline, a circulation component and a double-shaft motor. The left side of the dust removal pipeline is communicated with the circulation component. The right end penetrates through the right side of the box body and a fan is installed at the port. Transmission wheels are fixed on the rotating shaft of the fan and the output shaft at the right end of the double-shaft motor respectively, and the two transmission wheels are connected by a conveyor belt. A second sprayer is provided in the dust removal pipeline. The second sprayer is communicated with the water storage tank.

[0011] Preferably, the circulation component includes a buffer channel, a piston and a circulation pipe. Through openings are provided on both the left and right sides of the buffer channel and are respectively communicated with the cooling pipeline and the dust removal pipeline. First check valves are provided at the through openings on both the left and right sides of the buffer channel. One end of the circulation pipe is communicated with the lower end of the buffer channel, and the other end is communicated with the lower side of the right end of the dust removal pipeline and a second check valve is provided at the communication position;

[0012] The upper end of the buffer channel penetrates through the upper side of the box body. The piston is placed in the buffer channel and can slide longitudinally along the buffer channel. A disc is fixed on the output shaft at the left end of the double-shaft motor. An L-shaped connecting rod is rotatably connected to the eccentric position of the disc. The free end of the connecting rod is placed in the buffer channel and is rotatably connected to the upper side of the piston.

[0013] Preferably, the lower side of the dust removal pipeline is in a funnel shape, and the lower end is communicated with a third water outlet pipe. The free end of the third water outlet pipe is placed in the sedimentation pond.

[0014] Preferably, an ice inlet is provided on the front side of the box body. The upper end of the cooling pipe penetrates through the side wall of the cooling pipeline and is placed at the ice inlet.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) Fresh air outside the tunnel is introduced into the intake duct through forced ventilation technology. The first sprayer sprays the air to remove most of the soot and impurities in the air and make the air carry moisture. The double-shaft motor drives the fan to rotate, sucking the air with a large amount of soot in the tunnel into the dust removal duct. After passing through the second sprayer, the soot and impurities are removed and the air is made to carry moisture. The air with moisture is cooled by the cooling pipe in the cooling duct and then discharged into the tunnel. While reducing the temperature in the tunnel, it can also further reduce the dust in the tunnel environment, avoiding the impact of high temperature and high soot in the tunnel on the health of workers.

[0017] (2) After the air outside the tunnel is dust-removed by the first sprayer, the water with impurities will flow along the inner wall of the cooling duct and flow into the sedimentation tank through the first water outlet pipe. After the air in the dust removal channel is dust-removed by the second sprayer, the water with impurities will flow into the sedimentation tank through the third water outlet pipe. The water level in the sedimentation tank keeps rising until it overflows to the filter plate. After being filtered by the filter plate, it soaks into the clean water tank. Larger impurities will gradually settle to the bottom. At the same time, since ice cubes are put into the cooling pipe, the melted water can flow directly into the clean water tank through the second water outlet pipe. Then the water pump pumps the water in the clean water tank into the storage tank and continues to be used for dust removal in the dust removal duct and the intake duct, realizing the recycling of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the cooling and dust removal box according to the embodiment of the present invention.

[0019] Figure 2 It is the front sectional view of the cooling and dust removal box according to the embodiment of the present invention.

[0020] Figure 3 It is the structural diagram of the sedimentation tank according to the embodiment of the present invention.

[0021] In the above-mentioned drawings: water pump 1, intake duct 2, slide rail 3, baffle 4, first water outlet pipe 5, second water outlet pipe 6, storage tank 7, connecting rod 8, disc 9, double-shaft motor 10, transmission wheel 11, second sprayer 12, dust removal duct 13, fan 14, second check valve 15, third water outlet pipe 16, cooling pipe 17, cooling duct 18, clean water tank 19, first sprayer 20, first check valve 21, ice inlet 22, sedimentation tank 23, filter plate 24, piston 25, circulation pipe 26, box body 27. DETAILED DESCRIPTION OF THE INVENTION

[0022] The technical solutions in the present invention will be further described below in conjunction with the drawings and embodiments.

[0023] As Figure 1As shown in the figure, an embodiment of the present invention provides a cooling and dust removal box, which includes a box body 27, a dust removal mechanism, a cooling pipeline 18, an air inlet pipeline 2 and a sedimentation tank. The external dimensions of the box body 27 are 4*3*3 (m). The cooling pipeline 18 is arranged inside the box body 27 and both ends penetrate through the lower ends of the left and right sides of the box body 27 respectively. Air volume controllers are provided at the connections between the two ends of the cooling pipeline 18 and the box body 27. A cooling pipe 17 is arranged inside the cooling pipeline 18. An ice inlet 22 is opened on the front side of the box body 27. The upper end of the cooling pipe 17 penetrates through the side wall of the cooling pipeline 18 and is located at the ice inlet 22. The air inlet pipeline 2 is installed at the upper left end of the box body 27, with one end outside the box body 27 and the other end inside the box body 27 and communicating with the middle part of the cooling pipeline 18. The dust removal mechanism is installed at the upper right end of the box body 27, with one end communicating with the middle part of the cooling pipeline 18 and the other end communicating with the outside of the box body 27. The sedimentation tank is placed at the bottom side inside the box body 27. A first sprayer 20 is provided on the upper side inside the air inlet pipeline 2. The sedimentation tank is used to collect the water in the cooling pipe 17, the cooling pipeline 18 and the dust removal mechanism.

[0024] First, put ice cubes into the cooling pipe 17 from the ice inlet 22, and then introduce the fresh air outside the cave into the air inlet pipeline 2 through the forced ventilation technology. After being sprayed with dust by the first sprayer 20 and making the air carry moisture, the dust removal mechanism inhales and removes the high-temperature and high-dust air in the cave. The air with moisture is cooled by the cooling pipe 17 in the cooling pipeline 18 and then discharged into the construction environment in the cave from both ends of the cooling pipeline 18. While cooling the cave, it can also further remove dust from the cave environment. In addition, since the cooling pipeline 18 communicates with the left and right sides of the box body 27, ventilation can be carried out on both sides. Considering the operation space at the second lining position and the moving frequency of the cooling and dust removal box, its installation position is based on the lining trolley and it is advisable to install it about 100-200 meters behind the lining trolley. Specifically, its position can be dynamically adjusted according to the on-site construction conditions to achieve the best performance.

[0025] The air volume controller includes two slide rails 3 and a baffle 4. The two slide rails 3 are respectively fixed at the upper and lower ends of the connection between the cooling pipeline 18 and the box body 27. The baffle 4 is placed between the two slide rails 3 and can slide back and forth along the slide rails 3. The baffle 4 can completely block the cooling pipeline 18 at a certain moment. By sliding the baffle 4, the size of the outlet of the cooling pipeline 18 blocked by the baffle 4 can be controlled, so as to control the air volume.

[0026] The cooling pipeline 18 is in an inverted V shape. A cooling pipe 17 is arranged along the axis on both sides of the cooling pipeline 18. The lower sides of the left and right ends of the cooling pipeline 18 are communicated with a first water outlet pipe 5, and the lower end of the cooling pipe 17 is communicated with a second water outlet pipe 6; the sedimentation tank includes a sedimentation pond 23 and a purification pond 19. A partition is provided between the sedimentation pond 23 and the purification pond 19, and a filter plate 24 is provided on the upper side of the partition. The lower end of the first water outlet pipe 5 is placed in the sedimentation pond 23, and the lower end of the second water outlet pipe 6 is placed in the purification pond 19; a water pump 1 and a water storage tank 7 are provided on the top of the box body 27. The two ends of the water pump 1 are respectively communicated with the purification pond 19 and the water storage tank 7, and are used to pump the water in the purification pond 19 into the water storage tank 7. The first sprayer 20 is communicated with the water storage tank 7.

[0027] After the outside air is dust-removed by the first sprayer 20, the water with impurities will flow along the inner wall of the cooling pipeline 18 and flow into the sedimentation pond 23 through the first water outlet pipe 5. The water level in the sedimentation pond 23 continuously rises until it spreads to the filter plate 24. After being filtered by the filter plate 24, it soaks into the purification pond 19, and the larger impurities will gradually settle to the bottom. At the same time, because ice cubes are put into the cooling pipe 17, the melted water can directly flow into the purification pond 19 through the second water outlet pipe 6. Then the water pump 1 pumps the water in the purification pond 19 into the water storage tank 7 and continues to be used for dust removal of the dust removal pipeline 13 and the dust removal mechanism, realizing the recycling of water resources.

[0028] The dust removal mechanism includes a dust removal pipeline 13, a circulation component and a double-shaft motor 10. The left side of the dust removal pipeline 13 is communicated with the circulation component, and the right end penetrates through the right side of the box body 27 and a fan 14 is installed at the port. Transmission wheels 11 are fixed on the rotating shaft of the fan 14 and the output shaft at the right end of the double-shaft motor 10, and the two transmission wheels 11 are connected by a conveyor belt. A second sprayer 12 is provided in the dust removal pipeline 13, and the second sprayer 12 is communicated with the water storage tank 7;

[0029] The circulation component includes a buffer channel, a piston 25 and a circulation pipe 26. Through openings are provided on both the left and right sides of the buffer channel and are respectively communicated with the cooling pipeline 18 and the dust removal pipeline 13. First check valves 21 are provided at the through openings on both the left and right sides of the buffer channel. One end of the circulation pipe 26 is communicated with the lower end of the buffer channel, and the other end is communicated with the lower side of the right end of the dust removal pipeline 13 and a second check valve 15 is provided at the communication part;

[0030] The upper end of the buffer channel penetrates through the upper side of the box body 27. The piston 25 is placed in the buffer channel and can slide longitudinally along the buffer channel. A disc 9 is fixed on the output shaft at the left end of the double-shaft motor 10. An L-shaped connecting rod 8 is rotatably connected to the eccentric part of the disc 9. The free end of the connecting rod 8 is placed in the buffer channel and is rotatably connected to the upper side of the piston 25.

[0031] The first check valves 21 provided at the left and right through openings of the buffer channel can only allow air to flow from right to left, and the second check valve 15 at the connection between the circulation pipe and the dust removal pipe can only allow air to flow from bottom to top; when the dual-axis motor 10 rotates, it can drive the fan 14 and the disc 9 to rotate simultaneously. When the fan 14 rotates, it can suck the high-temperature and high-dust air in the cave into the dust removal pipe 13. After dust removal by the second atomizer 12, most of the dust is removed and part of the heat is absorbed by the moisture, for preliminary cooling. At the same time, when the disc 9 rotates, it will drive the connecting rod 8 to move up and down, so that the piston 25 moves up and down in the buffer channel. When the piston 25 moves up, the first check valve 21 on the left side of the buffer channel closes, the first check valve 21 on the right side opens, and the second check valve 15 closes. At this time, the air preliminarily dust-removed and cooled is sucked into the buffer channel. Then the piston 25 moves down, the first check valve 21 on the left side of the buffer channel opens, the first check valve 21 on the right side closes, and the second check valve 15 opens. Part of the air flows into the cooling pipe 18, and part of the air flows through the circulation pipe 26 and re-enters the dust removal pipe 13 for secondary cooling and dust removal. Moreover, the moisture adsorbed with dust and the moisture not adsorbed with dust are discharged back into the dust removal channel with the air, which can maximize the utilization of water and achieve efficient dust removal and cooling.

[0032] The lower side of the dust removal pipe 13 is funnel-shaped and is connected to a third water outlet pipe 16 at the lower end. The free end of the third water outlet pipe 16 is placed in the sedimentation tank 23; the lower side of the dust removal pipe 13 being funnel-shaped can conveniently guide the moisture with dust attached to the pipe wall into the third water outlet pipe 16 and flow into the sedimentation tank 23.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A cooling and dust removal box, characterized in that: It includes a box body, a dust removal mechanism, a cooling pipeline, an air inlet pipeline and a sedimentation tank. The cooling pipeline is arranged inside the box body and both ends penetrate through the lower ends of the left and right sides of the box body respectively. Air volume controllers are provided at the connections between both ends of the cooling pipeline and the box body. A cooling pipe is arranged inside the cooling pipeline. The air inlet pipeline is installed at the upper left end of the box body, with one end outside the box body and the other end inside the box body and communicating with the middle of the cooling pipeline. The dust removal mechanism is installed at the upper right end of the box body, with one end communicating with the middle of the cooling pipeline and the other end communicating with the outside of the box body. The sedimentation tank is placed at the bottom side inside the box body. A first sprayer is provided on the upper side inside the air inlet pipeline. The sedimentation tank is used to collect the water in the cooling pipe, the cooling pipeline and the dust removal mechanism; The air volume controller includes two slide rails and a baffle. The two slide rails are respectively fixed at the upper and lower ends of the connection between the cooling pipeline and the box body. The baffle is placed between the two slide rails and can slide back and forth along the slide rails. The baffle can completely block the cooling pipeline at a certain moment; The cooling pipeline is in an inverted V shape. A cooling pipe is arranged along the axis on each side of the cooling pipeline. First water outlet pipes are communicated with the lower sides of the left and right ends of the cooling pipeline. The lower end of the cooling pipe is communicated with a second water outlet pipe; The sedimentation tank includes a sedimentation pool and a clean water pool. A partition is provided between the sedimentation pool and the clean water pool. A filter plate is provided on the upper side of the partition. The lower end of the first water outlet pipe is placed in the sedimentation pool. The lower end of the second water outlet pipe is placed in the clean water pool. A water pump and a water storage tank are provided at the top of the box body. Both ends of the water pump are communicated with the clean water pool and the water storage tank respectively, for pumping the water in the clean water pool into the water storage tank. The first sprayer is communicated with the water storage tank; The dust removal mechanism includes a dust removal pipeline, a circulation component and a double-shaft motor. The left side of the dust removal pipeline is communicated with the circulation component. The right end penetrates through the right side of the box body and a fan is installed at the port. Transmission wheels are fixed on the rotating shaft of the fan and the output shaft at the right end of the double-shaft motor respectively, and the two transmission wheels are connected by a conveyor belt. A second sprayer is arranged inside the dust removal pipeline. The second sprayer is communicated with the water storage tank; The circulation component includes a buffer channel, a piston and a circulation pipe. Through openings are provided on both the left and right sides of the buffer channel and are respectively communicated with the cooling pipeline and the dust removal pipeline. First check valves are provided at the through openings on both the left and right sides of the buffer channel. One end of the circulation pipe is communicated with the lower end of the buffer channel, and the other end is communicated with the lower right side of the right end of the dust removal pipeline and a second check valve is provided at the communication position; The upper end of the buffer channel penetrates through the upper side of the box body. The piston is placed in the buffer channel and can slide longitudinally along the buffer channel. A disc is fixed on the output shaft at the left end of the double-shaft motor. An L-shaped connecting rod is rotatably connected to the eccentric part of the disc. The free end of the connecting rod is placed inside the buffer channel and is rotatably connected to the upper side of the piston.

2. The cooling and dust removal box according to claim 1, characterized in that: The lower side of the dust removal pipeline is in a funnel shape and is communicated with a third water outlet pipe at the lower end. The free end of the third water outlet pipe is placed in the sedimentation pool.

3. The cooling and dust removal box according to claim 1, characterized in that: An ice inlet is provided on the front side of the box body. The upper end of the cooling pipe penetrates through the side wall of the cooling pipeline and is placed at the ice inlet.

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