Waste gas treatment device for asphalt concrete production

Abstract

The utility model discloses a waste gas treatment device for asphalt concrete production, which comprises a gas inlet pipe, a switching assembly is arranged on the side surface of the gas inlet pipe, a dust removal assembly is arranged on the side surface of the switching assembly, a disinfection assembly is arranged on the side surface of the dust removal assembly, and the dust removal assembly comprises two dust removal boxes. Filter screens are inserted into the two dust removal boxes, and the split pipes are fixedly connected corresponding to the dust removal boxes and are communicated with the interiors of the dust removal boxes. According to the waste gas treatment device for asphalt concrete production, the position of a baffle is changed, a gas inlet pipe is communicated with another split pipe, gas is treated through a filter screen on the other side, then fixation of a nut is removed, the filter screen is taken down through a fixing plate, the taken-down filter screen is cleaned and then put back, in the process, through switching of a dust removal box, the dust removal efficiency is improved, and the dust removal efficiency is improved. The equipment does not need to be stopped when the filter screen is replaced, and the energy consumption required by starting and stopping large-scale equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt concrete, in particular to a waste gas treatment device for asphalt concrete production. Background Art

[0002] Asphalt concrete, as an important material for modern road construction, plays a pivotal role in the field of transportation infrastructure with its excellent load-bearing capacity and durability. A large amount of smoke and dust will be generated during the preparation and mixing of asphalt concrete, and since asphalt will produce irritating and toxic gases during the preparation of asphalt concrete, the exhaust gas needs to be treated during the preparation. During the treatment, the solid particles in the exhaust gas will be treated first, and then the harmful substances in the gas will be treated.

[0003] Solid particles are generally treated by adsorbing them through dust removal filters. When the adsorption of the filter reaches the upper limit, the filter needs to be replaced. At this time, the asphalt concrete production equipment needs to be stopped and the filter needs to be replaced. However, some large-scale preparation equipment requires time and electricity to start and stop each time. Each time the filter is replaced, the equipment needs to be stopped, which will cause excessive waste of resources.

[0004] To this end, the utility model provides an exhaust gas treatment device for asphalt concrete production to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an exhaust gas treatment device for asphalt concrete production, which solves the above-mentioned problems.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an exhaust gas treatment device for asphalt concrete production, comprising an air intake pipe, a switching component is arranged on the side of the air intake pipe, a dust removal component is arranged on the side of the switching component, a disinfection component is arranged on the side of the dust removal component, a suction fan is arranged on the side, the switching component comprises an outer tube, the interior of the outer tube is rotatably connected with a rotating shaft, two baffles are fixedly installed on the side of the rotating shaft, the air intake pipe is fixedly installed on the outside of the outer tube and is connected to the inside of the outer tube, two split pipes are fixedly installed on the outside of the outer tube and are connected to the inside of the outer tube, the dust removal component comprises two dust removal boxes, both of which are internally connected with filter screens, and the split pipes are fixedly connected to the corresponding dust removal boxes and are connected to the inside of the dust removal boxes.

[0007] Preferably: the angles between the outer tube and the two branch tubes are both 120 degrees, the angle between the two branch tubes is 120 degrees, the angle between the two baffles is 120 degrees, the upper and lower sides of the baffles are in contact with the top wall and bottom wall of the outer tube, the outer side wall of the baffle is in contact with the inner wall of the outer tube, and the part of the outer side of the baffle that contacts the inner wall of the outer tube is fixedly installed with a sealing gasket.

[0008] By adopting the above technical solution, the air intake pipe can be connected to different split pipes by changing the position of the internal baffle.

[0009] Preferably, a motor is fixedly mounted on the top of the outer tube, and an output end of the motor passes through the top wall of the outer tube and is fixedly connected to the rotating shaft.

[0010] By adopting the above technical solution, the motor drives the rotating shaft to rotate, thereby facilitating the adjustment of the baffle position.

[0011] Preferably: the dust removal assembly also includes a fixing plate, the frame of the filter screen passes through the side wall of the dust removal box, a sealing gasket is fixedly installed at the connection between the dust removal box and the filter screen frame and on the outside of the filter screen, the fixing plate is fixedly installed on the side of the filter screen frame, the fixing plate is attached to the outer wall of the dust removal box, a threaded column is fixedly installed on the outer end of the dust removal box, the threaded column passes through the interior of the fixing plate, a nut is threaded on the outer side of the threaded column, and the nut is attached to the outer wall of the fixing plate.

[0012] By adopting the above technical solution, the filter screen can be easily disassembled through nuts, threaded columns and baffles.

[0013] Preferably: the disinfection assembly includes a water tank, an inlet pipe is fixedly installed on the top wall of the water tank, a merging pipe is fixedly installed on the right side of the dust removal box and is connected to the interior of the dust removal box, both merging pipes are connected to the inlet of the inlet pipe, a one-way valve is fixedly installed inside the merging pipe, and the outlet of the inlet pipe is located in the lower half of the interior of the water tank.

[0014] By adopting the above technical solution, the one-way valve is used to ensure that the internal gas does not flow back.

[0015] Preferably: a discharge pipe is fixedly mounted on the top wall of the water tank, the inlet of the discharge pipe is located inside the water tank, the outlet of the discharge pipe is located above the water tank, and the inlet of the discharge pipe is located above the liquid level inside the water tank.

[0016] By adopting the above technical solution, the gas that passes through the internal disinfectant is discharged through the drain pipe.

[0017] Preferably: a water inlet pump is fixedly installed on the top of the water tank, a mud pump is fixedly installed on the side of the water tank, the outlet of the water inlet pump is communicated with the inside of the water tank, and the inlet of the mud pump is communicated with the inside of the water tank.

[0018] By adopting the above technical solution, the disinfectant is replenished through the water inlet pump, and the disinfectant containing dust and mud after absorption is discharged through the mud pump.

[0019] Preferably, the outlet of the exhaust pipe is connected to the air inlet of the suction fan.

[0020] By adopting the above technical solution, the air inside the device is sucked out by the suction fan, forming a negative pressure inside to accelerate the internal gas flow rate.

[0021] Beneficial Effects

[0022] The utility model provides an exhaust gas treatment device for asphalt concrete production. Compared with the prior art, it has the following beneficial effects:

[0023] 1. The waste gas treatment device for asphalt concrete production connects the air inlet pipe with another split pipe by changing the position of the baffle, and processes the gas through the filter on the other side. The filter is then removed through the fixing plate by releasing the nut, and the removed filter is cleaned and put back. This process ensures that the equipment does not need to be stopped when replacing the filter by switching the dust removal box, thereby reducing the energy consumption required for starting and stopping large equipment.

[0024] 2. The waste gas treatment device for asphalt concrete production can discharge the muddy water that absorbs dust through the mud pump below, and discharge new water and disinfectant into the water tank through the water inlet pump above, ensuring that the treated impurities can be cleaned simultaneously during the treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the implementation scheme of the utility model or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a three-dimensional diagram of the external structure of the utility model;

[0027] Figure 2 It is a left-side overall structural stereogram of the utility model;

[0028] Figure 3 It is a three-dimensional diagram of the structure of the switching component and the dust removal component of the utility model;

[0029] Figure 4 It is a cross-sectional view of the internal structure of the disinfection component of the utility model.

[0030] In the figure: 1. Intake pipe; 2. Switching assembly; 21. External cylinder; 22. Motor; 23. Split pipe; 24. Rotating shaft; 25. Baffle; 3. Dust removal assembly; 31. Dust removal box; 32. Filter; 33. Fixing plate; 34. Threaded column; 35. Nut; 4. Disinfection assembly; 41. Water tank; 42. Inlet pipe; 43. Discharge pipe; 44. Water inlet pump; 45. Mud pump; 5. Suction fan; 6. Junction pipe; 7. One-way valve. DETAILED DESCRIPTION

[0031] It should be noted that in the description of the embodiments of the present application, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] The present application is further described in detail below through drawings and examples.

[0033] Reference Figures 1 to 4 The embodiment of the present application provides an exhaust gas treatment device for asphalt concrete production, including an air intake pipe 1, a switching component 2 is arranged on the side of the air intake pipe 1, a dust removal component 3 is arranged on the side of the switching component 2, a disinfection component 4 is arranged on the side of the dust removal component 3, and a suction fan 5 is arranged on the side. The switching component 2 includes an external tube 21, and the internal rotation of the external tube 21 is connected to a rotating shaft 24, and two baffles 25 are fixedly installed on the side of the rotating shaft 24. The air intake pipe 1 is fixedly installed on the outside of the external tube 21 and is connected to the inside of the external tube 21. Two split pipes 23 are fixedly installed on the outside of the external tube 21 and are connected to the inside of the external tube 21. The dust removal component 3 includes two dust removal boxes 31, and the insides of the two dust removal boxes 31 are both plugged with filter screens 32. The split pipes 23 are fixedly connected to the dust removal boxes 31 and are connected to the inside of the dust removal boxes 31.

[0034] The angles between the outer tube 21 and the two split tubes 23 are both 120 degrees, the angle between the two split tubes 23 is 120 degrees, the angle between the two baffles 25 is 120 degrees, the upper and lower sides of the baffle 25 are in contact with the top wall and the bottom wall of the outer tube 21, the outer wall of the baffle 25 is in contact with the inner wall of the outer tube 21, and the part of the outer side of the baffle 25 in contact with the inner wall of the outer tube 21 is fixedly installed with a sealing gasket. The top of the outer tube 21 is fixedly installed with a motor 22, and the output end of the motor 22 passes through the top wall of the outer tube 21 and is fixedly connected to the rotating shaft 24.

[0035] The dust removal assembly 3 also includes a fixing plate 33, the frame of the filter 32 passes through the side wall of the dust removal box 31, and a sealing gasket is fixedly installed at the connection between the dust removal box 31 and the frame of the filter 32 and on the outside of the filter 32. The fixing plate 33 is fixedly installed on the side of the frame of the filter 32, and the fixing plate 33 is attached to the outer wall of the dust removal box 31. A threaded column 34 is fixedly installed on the outer end of the dust removal box 31, and the threaded column 34 passes through the interior of the fixing plate 33. A nut 35 is screwed on the outer side of the threaded column 34, and the nut 35 is attached to the outer wall of the fixing plate 33.

[0036] In this embodiment, the rotating shaft 24 can be driven to rotate by starting the motor 22, and the rotation of the rotating shaft 24 can drive the two internal baffles 25 to adjust their positions. The two baffles 25 can block one of the split pipes 23 to ensure that the gas entering the intake pipe 1 can be discharged through one of the split pipes 23, thereby ensuring that only one dust removal box 31 can pass through the gas at the same time; after the exhaust gas enters the dust removal box 31, the internal filter 32 can block the large particles of dust in the gas;

[0037] When treating the asphalt concrete waste gas, the waste gas enters through the air intake pipe 1, and then enters the dust removal box 31 through the external cylinder 21 and the branch pipe 23 for dust removal, so as to remove the large particles in the waste gas. When the filter 32 needs to be replaced, the position of the baffle 25 is changed to connect the air intake pipe 1 with the other branch pipe 23, and the gas is treated through the filter 32 on the other side. Thereafter, the filter 32 is removed through the fixing plate 33 by releasing the nut 35, and the removed filter 32 is cleaned and put back. This process ensures that the equipment does not need to be stopped when replacing the filter 32 through the switching of the dust removal box 31, thereby reducing the energy consumption required for starting and stopping large equipment.

[0038] Reference Figures 1 to 4 In one aspect of the present embodiment, the disinfection assembly 4 includes a water tank 41, and an inlet pipe 42 is fixedly installed on the top wall of the water tank 41. A merging pipe 6 is fixedly installed on the right side of the dust removal box 31 and is connected to the interior of the dust removal box 31. Both merging pipes 6 are connected to the inlet of the inlet pipe 42. A one-way valve 7 is fixedly installed inside the merging pipe 6, and the outlet of the inlet pipe 42 is located in the lower half of the interior of the water tank 41.

[0039] A discharge pipe 43 is fixedly mounted on the top wall of the water tank 41, the inlet of the discharge pipe 43 is located inside the water tank 41, the outlet of the discharge pipe 43 is located above the water tank 41, and the inlet of the discharge pipe 43 is located above the liquid level inside the water tank 41. A water inlet pump 44 is fixedly mounted on the top of the water tank 41, a mud pump 45 is fixedly mounted on the side of the water tank 41, the outlet of the water inlet pump 44 is connected to the inside of the water tank 41, and the inlet of the mud pump 45 is connected to the inside of the water tank 41.

[0040] The outlet of the discharge pipe 43 is communicated with the air inlet of the suction fan 5 .

[0041] In this embodiment, the gas after large particle treatment enters the water tank 41 through the confluence pipe 6 and the inlet pipe 42. The one-way valve 7 on the confluence pipe 6 can ensure that the two dust removal boxes 31 will not cross-communicate with each other through the two confluence pipes 6. The exhaust gas entering the water tank 41 will be passed into the water inside the water tank 41. The water inside the water tank 41 contains sodium hypochlorite solution. The water inside the water tank 41 can adsorb and dissolve small particles of dust in the exhaust gas, and disinfect the harmful substances produced by asphalt by sodium hypochlorite. The gas after disinfection is discharged from the water surface and discharged through the discharge pipe 43. After discharge, the treated gas is discharged through the suction fan 5. During the treatment, the muddy water adsorbing the dust can be discharged through the mud pump 45 below, and the new water and disinfectant are discharged into the water tank 41 through the water inlet pump 44 above, so as to ensure that the treated impurities can be cleaned synchronously during the treatment.

[0042] Working principle: When treating the waste gas of asphalt concrete, the waste gas enters through the air intake pipe 1, and then enters the dust removal box 31 through the external cylinder 21 and the branch pipe 23 for dust removal, so as to remove the large particles in the waste gas. When the filter 32 needs to be replaced, the position of the baffle 25 is changed to connect the air intake pipe 1 with the other branch pipe 23, and the gas is processed through the filter 32 on the other side. Then, the filter 32 is removed through the fixing plate 33 by releasing the nut 35, and the removed filter 32 is cleaned and put back. This process ensures that the equipment does not need to be stopped when replacing the filter 32 through the switching of the dust removal box 31, which reduces the The energy consumption required for starting and stopping large equipment, the gas after large particle treatment enters the water tank 41 through the confluence pipe 6 and the inlet pipe 42, and the one-way valve 7 on the confluence pipe 6 can ensure that the two dust removal boxes 31 will not cross-flow through the two confluence pipes 6. The exhaust gas entering the water tank 41 will be passed into the water inside the water tank 41. The water inside the water tank 41 contains sodium hypochlorite solution. The water inside the water tank 41 can adsorb and dissolve small particles of dust in the exhaust gas, and disinfect the harmful substances produced by the asphalt through sodium hypochlorite. The disinfected gas is discharged from the water surface and discharged through the discharge pipe 43. After discharge, the treated gas is discharged through the suction fan 5.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas treatment device for asphalt concrete production, comprising an air intake pipe (1), characterized in that: A switching assembly (2) is arranged on the side of the air inlet pipe (1), a dust removal assembly (3) is arranged on the side of the switching assembly (2), a disinfection assembly (4) is arranged on the side of the dust removal assembly (3), and a suction fan (5) is arranged on the side. The switching assembly (2) comprises an external tube (21), the interior of the external tube (21) is rotatably connected to a rotating shaft (24), and two baffles (25) are fixedly mounted on the side of the rotating shaft (24). The air inlet pipe (1) is fixedly mounted on the outside of the external tube (21) and communicates with the interior of the external tube (21). Two split pipes (23) are fixedly mounted on the outside of the external tube (21) and communicate with the interior of the external tube (21). The dust removal assembly (3) comprises two dust removal boxes (31), the interiors of the two dust removal boxes (31) are both plugged with filter screens (32), and the split pipes (23) are fixedly connected to the corresponding dust removal boxes (31) and communicate with the interior of the dust removal boxes (31).

2. The waste gas treatment device for asphalt concrete production according to claim 1 is characterized in that: The included angles between the outer tube (21) and the two branch tubes (23) are both 120 degrees, the included angle between the two branch tubes (23) is 120 degrees, and the included angle between the two baffles (25) is 120 degrees. The upper and lower sides of the baffle (25) are in contact with the top wall and the bottom wall of the outer tube (21), and the outer wall of the baffle (25) is in contact with the inner wall of the outer tube (21). The portion of the outer side of the baffle (25) that contacts the inner wall of the outer tube (21) is fixedly installed with a sealing gasket.

3. The waste gas treatment device for asphalt concrete production according to claim 1 is characterized in that: A motor (22) is fixedly mounted on the top of the outer cylinder (21), and an output end of the motor (22) passes through the top wall of the outer cylinder (21) and is fixedly connected to a rotating shaft (24).

4. The waste gas treatment device for asphalt concrete production according to claim 1 is characterized in that: The dust removal assembly (3) further comprises a fixing plate (33), the frame of the filter screen (32) passes through the side wall of the dust removal box (31), a sealing gasket is fixedly installed at the connection between the dust removal box (31) and the frame of the filter screen (32) and located on the outside of the filter screen (32), the fixing plate (33) is fixedly installed on the side of the frame of the filter screen (32), the fixing plate (33) is attached to the outer wall of the dust removal box (31), a threaded column (34) is fixedly installed on the outer end of the dust removal box (31), the threaded column (34) passes through the interior of the fixing plate (33), a nut (35) is screwed on the outer side of the threaded column (34), and the nut (35) is attached to the outer wall of the fixing plate (33).

5. The waste gas treatment device for asphalt concrete production according to claim 1 is characterized in that: The disinfection assembly (4) comprises a water tank (41), the top wall of which is fixedly mounted an inlet pipe (42), the right side of the dust removal box (31) is fixedly mounted a merging pipe (6) which is in communication with the interior of the dust removal box (31), both merging pipes (6) are in communication with the inlet of the inlet pipe (42), a one-way valve (7) is fixedly mounted inside the merging pipe (6), and the outlet of the inlet pipe (42) is located in the lower half of the interior of the water tank (41).

6. The waste gas treatment device for asphalt concrete production according to claim 5 is characterized in that: A discharge pipe (43) is fixedly mounted on the top wall of the water tank (41); the inlet of the discharge pipe (43) is located inside the water tank (41); the outlet of the discharge pipe (43) is located above the water tank (41); and the inlet of the discharge pipe (43) is located above the liquid level inside the water tank (41).

7. The waste gas treatment device for asphalt concrete production according to claim 6 is characterized in that: A water inlet pump (44) is fixedly installed on the top of the water tank (41), and a mud pump (45) is fixedly installed on the side of the water tank (41). The outlet of the water inlet pump (44) is communicated with the interior of the water tank (41), and the inlet of the mud pump (45) is communicated with the interior of the water tank (41).

8. The waste gas treatment device for asphalt concrete production according to claim 7 is characterized in that: The outlet of the discharge pipe (43) is communicated with the air inlet of the suction fan (5).

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