Asphalt concrete mixing station and dust removal device thereof

Abstract

The present invention relates to the field of asphalt mixing, and discloses an asphalt concrete mixing station, comprising a mixing box, a mixing mechanism and a driving source, wherein the mixing mechanism comprises a mixing bracket which is slidably matched with the mixing box and a linear module for driving the mixing bracket to move, a plug hole parallel to the sliding direction of the mixing bracket is arranged on the side of the mixing box, a mixing member is installed on the mixing bracket, the mixing member comprises a mixing column which is coaxial with the plug hole, a connecting shaft is coaxially extended from the end of the mixing column, the connecting shaft is driven to rotate by a motor arranged on the mixing bracket, a core groove is coaxially arranged inside the mixing column, the core groove is connected to the connecting shaft in the shape of a hollow shaft, a mounting hole is radially arranged on the outer cylindrical surface of the mixing column, the mounting hole is connected to the core groove, a plurality of mounting holes are arranged in an array on the outer cylindrical surface of the mixing column, a group of mixing components are arranged in each mounting hole, and the mixing components can extend out of or retract into the mounting hole.

Description

Technical Field

[0001] The invention relates to the field of asphalt mixing, and in particular to an asphalt concrete mixing station and a dust removal device thereof. Background Art

[0002] Asphalt is a high-viscosity organic liquid. When used, concrete, sand, cement, etc. are generally added to the asphalt in proportion for mixing. Since asphalt is relatively viscous and has high viscosity, it is easy for asphalt to stick to the mixing blades during the mixing process, causing the mixing blades to become thicker and thicker. For example, the Chinese invention patent with application publication number CN110565478A discloses a recycled asphalt mixing equipment, which uses E-shaped mixing blades to mix asphalt. This mixing method obviously has the problem that the mixing blades become thicker as the mixing progresses, affecting the subsequent mixing process, especially after the mixing is completed, the asphalt stuck to the mixing blades is difficult to remove. Therefore, it is necessary to improve the mixing structure for asphalt mixing.

[0003] In addition, since it is necessary to add concrete, sand and gravel and other materials to the asphalt, dust will inevitably be generated, polluting the surrounding construction environment. Therefore, corresponding dust removal treatment is required. In the prior art, the common dust removal method is water curtain dust removal technology, which drives the mixed gas of air and dust through a flowing water curtain, and absorbs the dust in the mixed gas through the water curtain to achieve the purpose of dust removal. However, the mixed gas generally passes through the water curtain at a certain speed, and some dust is prone to escape. The dust after escape cannot be captured again by the water curtain, resulting in relatively poor dust removal effect, which needs to be improved.

[0004] Based on the above, the present invention proposes an asphalt concrete mixing station and a dust removal device thereof. Summary of the invention

[0005] In order to solve the problems mentioned in the above background, the present invention provides an asphalt concrete mixing station and a dust removal device thereof.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0007] An asphalt concrete mixing station comprises a mixing box, a mixing mechanism and a driving source, wherein the mixing mechanism comprises a mixing bracket which is slidably matched with the mixing box and a linear module for driving the mixing bracket to move, and a plug hole parallel to the sliding direction of the mixing bracket is arranged on the side of the mixing box;

[0008] A stirring member is installed on the stirring bracket, and the stirring member includes a stirring column coaxial with the insertion hole, a connecting shaft is coaxially extended from the end of the stirring column, and the connecting shaft is driven to rotate by a motor arranged on the stirring bracket, a core groove is coaxially arranged inside the stirring column, and the core groove is connected with the connecting shaft in the shape of a hollow shaft, and a mounting hole is radially arranged on the outer cylindrical surface of the stirring column, and the mounting hole is connected with the core groove. A plurality of mounting holes are arranged in an array on the outer cylindrical surface of the stirring column, and a group of stirring components are arranged in each mounting hole, and the stirring components can extend out of or retract into the mounting hole.

[0009] As a further improvement and optimization of the present invention, the stirring assembly includes an outer sleeve column mounted in the mounting hole, an external step one is provided at one end of the outer sleeve column facing the axis line of the stirring column, an internal step one is provided at the opening of the mounting hole away from the axis line of the stirring column, the interior of the outer sleeve column is hollow and is mounted with an inner sliding column, an external step two is provided at one end of the inner sliding column facing the axis line of the stirring column, and an internal step two is provided at the opening of the outer sleeve column away from the axis line of the stirring column.

[0010] As a further improvement and optimization of the present invention, two mounting holes are arranged in an array along the circumferential direction of the stirring column to form a mounting hole assembly, and a plurality of mounting hole assemblies are arranged in an array along the axial direction of the stirring column;

[0011] The ends of the outer sleeve columns in the two mounting holes in the mounting hole assembly facing each other are in contact, and the part of the outer sleeve column extending into the core groove is provided with a side hole.

[0012] As a further improvement and optimization of the present invention, the ends of the outer sleeve column and the inner slide column facing away from the stirring column are in an arc shape, and when the stirring assembly is retracted into the mounting hole, the stirring column presents a complete cylindrical shape.

[0013] As a further improvement and optimization of the present invention, the driving source includes an oil storage tank and a hydraulic cylinder, one end of the hydraulic cylinder is connected to the oil storage tank, and the other end is connected to the coupling shaft through a connecting pipe.

[0014] A dust removal device for an asphalt concrete mixing station comprises a dust removal mechanism;

[0015] An air nozzle is arranged at the upper end of the mixing box, and air holes are arranged on the outer surface of the mixing box;

[0016] The dust removal mechanism includes a blower and a dust removal box. The air inlet end of the blower is connected to the air nozzle through an air pipe 1. The air outlet end of the blower is provided with an air pipe 2, and the end of the air pipe 2 is provided with an air main pipe.

[0017] A dust removal component is arranged in the dust removal box, an exhaust pipe is arranged on the outer surface of the dust removal box, a water main is arranged at the upper end of the dust removal box, a downpipe is extended from the lower end face of the water main, water is drawn through the water main and the downpipe in turn through the water pump technology and falls onto the dust removal component to form a water curtain, a bottom pipe is extended from the upper end of the air main, and the upper end of the bottom pipe is connected to the dust removal component.

[0018] As a further improvement and optimization of the present invention, the dust removal component includes a water curtain ball, which is in the shape of an ellipsoid with a hollow interior and a vertically arranged long axis. The downpipe is located above the highest point of the water curtain ball, and the upper end of the bottom pipe is connected to the lowest point of the water curtain ball. An outlet is provided on the outer surface of the water curtain ball, and several outlets are arranged in an array along the circumferential direction of the short axis section of the water curtain ball. The short axis section refers to a section of the water curtain ball that is horizontally arranged and contains the short axis.

[0019] As a further improvement and optimization of the present invention, the outlet is located below the short axis of the water curtain ball, and the outlet is arranged vertically.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the stirring process of this scheme, the stirring mechanism uses hydraulic medium to switch the state. The advantages of this are: on the one hand, the hydraulic medium, namely hydraulic oil, has incompressible properties. Therefore, during stirring, since the hydraulic medium is filled in the stirring component, the stirring component can be regarded as a solid state with high strength. During the stirring process, the stirring component will not break due to the viscosity of the asphalt. On the other hand, since the asphalt needs to be scraped off the stirring component regularly to prevent affecting the stirring process, and the asphalt itself is relatively viscous, after the stirring component is scraped off, it takes a lot of force to re-extend it, and the hydraulic method can facilitate the retraction or extension of the stirring component;

[0022] 2. During the dust removal process of this scheme:

[0023] 1. Since the water curtain is elliptical in shape, based on the Bernoulli principle, the flow of the water curtain will generate negative pressure, which will make the surrounding air close to the water curtain. Therefore, when the air passes through the water curtain, if the dust removal is not thorough and dust escapes, the negative pressure will pull the dust close to the water curtain again, that is, the water curtain can capture the escaped dust, and the dust removal effect is significantly enhanced;

[0024] 2. Based on the Bernoulli principle, the water curtain has the greatest capture ability at the short axis of the water curtain ball, and the exit for dust and air to leave is located just below the short axis. Therefore, the performance of the water curtain in capturing escaping dust can be maximized.

[0025] 3. Since the outlet is arranged vertically, the distance between the air and the water curtain is closer after passing through the water curtain, which is more conducive to the water curtain's ability to capture escaping dust. On the contrary, if the outlet is not arranged vertically, the air leaving through the outlet has an initial horizontal velocity, which may cause the air to continue moving after passing through the water curtain, while the dust flows with the air, which can easily cause the escaping dust to move away from the water curtain, and the water curtain's ability to capture escaping dust cannot be maximized. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the present invention when the stirring mechanism is located outside the stirring box;

[0027] Figure 2 It is a schematic diagram of the present invention when the stirring mechanism is located inside the stirring box;

[0028] Figure 3 This is an exploded view of the mixing mechanism and the mixing box;

[0029] Figure 4 is a schematic diagram of the stirring member when the stirring assembly is retracted into the stirring column;

[0030] Figure 5 A cross-sectional view of the stirring member when the stirring assembly is retracted into the stirring column;

[0031] Figure 6 It is a schematic diagram of the stirring member when the stirring assembly extends out of the stirring column;

[0032] Figure 7 A cross-sectional view of the stirring member when the stirring assembly extends out of the stirring column;

[0033] Figure 8 is an exploded view of the stirring assembly;

[0034] Fig. 9 is a schematic diagram of a driving source;

[0035] Fig.10 is a schematic diagram of a dust removal mechanism;

[0036] Fig.11 A schematic diagram of a dust removal component;

[0037] Fig.12 Schematic diagram of the water curtain ball.

[0038] The reference numerals in the accompanying drawings are:

[0039] 100, mixing box; 101, bottom cover; 102, hydraulic rod; 103, feed pipe 1; 104, feed pipe 2; 105, air nozzle; 106, linear module; 107, air hole; 108, plug hole; 200, mixing mechanism; 201, mixing bracket; 202, motor; 203, mixing member; 204, mixing column; 205, connecting shaft; 206, mixing assembly; 2061, outer sleeve column; 2062 , inner sliding column; 2063, side hole; 300, driving source; 301, oil storage tank; 302, hydraulic cylinder; 303, hydraulic pipeline; 400, dust removal mechanism; 401, air pipe one; 402, blower; 403, air pipe two; 404, dust removal box; 405, water main pipe; 406, exhaust pipe; 407, water curtain ball; 4071, outlet; 408, bottom pipe; 409, downpipe; 500, connecting pipe. DETAILED DESCRIPTION

[0040] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0041] Embodiment 1

[0042] Reference Figure 1-Figure 9 An asphalt concrete mixing station includes a mixing box 100. Two feed pipes are arranged on the top of the mixing box 100: a feed pipe 103 for asphalt to enter, and a feed pipe 104 for concrete and other materials to enter. The bottom of the mixing box 100 is open and hinged with a bottom cover 101. The bottom cover 101 is driven to rotate around the hinge axis by a hydraulic rod 102, thereby opening or closing the bottom opening of the mixing box 100. This can be achieved in the prior art and will not be described in detail.

[0043] A plug hole 108 is provided on the side of the mixing box 100 .

[0044] The mixing station also includes a mixing mechanism 200 and a driving source 300, wherein:

[0045] The stirring mechanism 200 is configured to switch between an extended state, a retracted state, and a stirring state. When in the extended state, the stirring mechanism 200 is located outside the stirring box 100, and the stirring member 203 in the stirring mechanism 200 is cylindrical in shape as a whole, and the stirring assembly 206 inside is retracted into the stirring column 204. When in the retracted state, the stirring member 203 is still cylindrical in shape as a whole, and the stirring member 203 extends into the stirring box 100 through the insertion hole 108. When in the stirring state, the stirring member 203 extends into the stirring box 100 and the stirring assembly 206 extends out of the stirring column 204. In this state, the stirring column 204 rotates with the stirring assembly 206 to achieve asphalt stirring.

[0046] The driving source 300 is used to drive the stirring assembly 206 in the stirring mechanism 200 to extend or retract the stirring column 204 .

[0047] Reference Figure 3 The stirring mechanism 200 includes a stirring bracket 201 that slides with the stirring box 100 and a linear module 106 for driving the stirring bracket 201 to move. The sliding direction of the stirring bracket 201 is parallel to the axial direction of the socket 108. The linear module 106 can be an existing electric telescopic rod technology or a screw linear motion technology.

[0048] Two sets of stirring members 203 are installed on the stirring support 201 .

[0049] Reference Figure 4-Figure 7 The stirring member 203 includes a stirring column 204 parallel to the insertion hole 108, and a connecting shaft 205 coaxially extends from the end of the stirring column 204. The connecting shaft 205 is driven to rotate by a motor 202 arranged on the stirring bracket 201 and rotates with the stirring column 204.

[0050] A core groove is coaxially arranged inside the stirring column 204, and the core groove is connected to the connecting shaft 205 in the shape of a hollow shaft. The outer cylindrical surface of the stirring column 204 is radially provided with mounting holes, and the mounting holes are connected to the core groove. A plurality of mounting holes are arranged in an array on the outer cylindrical surface of the stirring column 204, and a group of stirring components 206 are arranged in each mounting hole.

[0051] Reference Figure 5 , Figure 7 and Figure 8 The stirring assembly 206 is composed of a plurality of columns in a telescopic rod structure. Two columns are shown in this solution, and this is used as an example for explanation:

[0052] The stirring assembly 206 includes an outer sleeve column 2061 which is sleeved in the mounting hole. An external step 1 is provided at one end of the outer sleeve column 2061 facing the axis line of the stirring column 204, and an internal step 1 is provided at the opening of the mounting hole away from the axis line of the stirring column 204. The outer sleeve column 2061 is prevented from detaching from the mounting hole through the cooperation between the external step 1 and the internal step 1.

[0053] The interior of the outer sleeve column 2061 is hollow and is sleeved with an inner sliding column 2062. Similarly, an external step 2 is provided at one end of the inner sliding column 2062 facing the axis of the stirring column 204, and an internal step 2 is provided at the opening of the outer sleeve column 2061 away from the axis of the stirring column 204. The cooperation between the external step 2 and the internal step 2 prevents the inner sliding column 2062 from separating from the outer sleeve column 2061.

[0054] In addition, in this solution, there are two mounting holes arranged coaxially, so initially the facing ends of the outer sleeve columns 2061 in the two mounting holes are in contact, so it is necessary to set a side hole 2063 on the part of the outer sleeve column 2061 extending into the core groove to facilitate the entry of hydraulic medium.

[0055] The working process of the stirring mechanism 200 is as follows:

[0056] Initially, the stirring mechanism 200 is in a stirring state, the stirring column 204 and the stirring assembly 206 are filled with hydraulic medium, and when asphalt and concrete are put into the mixing box 100, the motor 202 drives the stirring column 204 and the stirring assembly 206 to rotate to achieve the stirring of the asphalt;

[0057] During the stirring process, the hydraulic medium in the two groups of stirring members 203 can leave alternately. During the process of the hydraulic medium leaving, the stirring assembly 206 is retracted into the installation hole. Preferably, the ends of the outer sleeve 2061 and the inner slide 2062 away from the stirring column 204 are in an arc shape. After being retracted into the installation hole, the stirring column 204 can present a complete cylindrical shape. At the same time, during the retraction process, the asphalt stuck on the outer sleeve 2061 and the inner slide 2062 can be scraped off to prevent the stirring assembly 206 from becoming thicker in outer diameter as it stirs more, thereby affecting the subsequent stirring process. Afterwards, the hydraulic medium returns again, so that the stirring assembly 206 is re-extended to continue the stirring action.

[0058] When the stirring is finished, the stirring assembly 206 retracts into the mounting hole, the bottom cover 101 opens, and the asphalt is output outward. After the output is completed, the stirring bracket 201 is driven to move by the linear module 106, so that the stirring member 203 leaves the mixing box 100. Since the stirring column 204 is in a complete cylindrical shape at this time, the staff can easily clean the stirring column 204 with the help of tools.

[0059] In the above process, the stirring mechanism 200 uses hydraulic medium to switch the state. The advantages of this are: on the one hand, the hydraulic medium, i.e. hydraulic oil, has an incompressible property. Therefore, during stirring, since the hydraulic medium is filled in the stirring component 206, the stirring component 206 can be regarded as a solid state with high strength. During the stirring process, it will not break due to the viscosity of the asphalt. On the other hand, since the asphalt of the stirring component 206 needs to be scraped off regularly to prevent it from affecting the stirring process, and the asphalt itself is relatively viscous, after the stirring component 206 is scraped off, a lot of force is needed to re-extend it, and the hydraulic method can facilitate the retraction or extension of the stirring component 206.

[0060] Reference Figure 3 and Fig. 9The driving source 300 includes an oil tank 301 and a hydraulic cylinder 302, wherein the input end of the hydraulic cylinder 302 is connected to the oil tank 301, and the output end of the hydraulic cylinder 302 is connected to the connecting shaft 205 via a connecting pipe 500. It should be noted that since the connecting shaft 205 can rotate, the connecting pipe 500 needs to be connected to the connecting shaft 205 via a rotating joint.

[0061] In the preferred embodiment, since the hydraulic medium needs to be pulled by the driving source 300, injected into the stirring mechanism 200 or leaves the stirring mechanism 200, and in the existing hydraulic cylinder technology, in order to ensure that the hydraulic cylinder can smoothly pull the hydraulic medium to flow, the input and output ends of the hydraulic cylinder technology are generally not switchable. Therefore, in this solution, the oil storage tank 301, the hydraulic cylinder 302 and the connecting pipe 500 are connected through the hydraulic pipeline 303. For details, refer to Fig. 9 The hydraulic pipeline 303 includes a pipeline 1 arranged between the input end of the hydraulic cylinder 302 and the oil storage tank 301, a pipeline 2 arranged between the output end of the hydraulic cylinder 302 and the connecting pipe 500, and a pipeline 3 and a pipeline 4 arranged between the pipeline 1 and the pipeline 2, wherein a valve 1 is arranged on the pipeline 1, and the valve 1 is located between the connection between the pipeline 3 and the pipeline 1 and the connection between the pipeline 4 and the pipeline 1, a valve 2 is arranged on the pipeline 2, and the valve 2 is located between the connection between the pipeline 3 and the pipeline 2 and the connection between the pipeline 4 and the pipeline 2, a valve 3 is arranged on the pipeline 3, and a valve 4 is arranged on the pipeline 4; when the valve 1 and the valve 2 are opened, and the valve 3 and the valve 4 are closed, the operation of the hydraulic cylinder 302 will cause the hydraulic medium of the oil storage tank 301 to be injected into the stirring mechanism 200 through the pipeline 1, the pipeline 2, and the connecting pipe 500, and when the valve 1 and the valve 2 are closed, and the valve 3 and the valve 4 are opened, the operation of the hydraulic cylinder 302 will cause the hydraulic medium in the stirring mechanism 200 to return to the oil storage tank 301 through the pipeline 3, the pipeline 4, and the pipeline 2.

[0062] Embodiment 2

[0063] Reference Figure 1 and Figure 2 , a dust removal device for an asphalt concrete mixing station includes a dust removal mechanism 400.

[0064] Reference Figure 3 An air nozzle 105 is provided at the upper end of the mixing box 100 , and an air hole 107 is provided on the outer surface of the mixing box 100 .

[0065] Reference Figure 10-12 The dust removal mechanism 400 includes a blower 402, an air inlet end of the blower 402 is connected to the air nozzle 105 via an air pipe 1 401, an air pipe 2 403 is provided at the air outlet end of the blower 402, and an air main pipe is provided at the end of the air pipe 2 403.

[0066] The dust removal mechanism 400 also includes a dust removal box 404, in which a dust removal component is arranged, and an exhaust pipe 406 is arranged on the outer surface of the dust removal box 404. A water main pipe 405 is arranged at the upper end of the dust removal box 404, and a downpipe 409 is extended from the lower end face of the water main pipe 405. Through the water pump technology, water can be drawn through the water main pipe 405 and the downpipe 409 in sequence to fall onto the dust removal component and form a water curtain, and a bottom pipe 408 is extended from the upper end of the air main pipe, and the upper end of the bottom pipe 408 is connected to the dust removal component. The dust in the mixing box 100 is drawn by the blower 402, flows with the air, and passes through the water curtain, so as to achieve the purpose of water curtain dust removal.

[0067] Further, see Fig.11 The dust removal component includes a water curtain ball 407, which is hollow inside and has an ellipsoid shape with a vertically arranged long axis. The downpipe 409 is located above the highest point of the water curtain ball 407, and the upper end of the bottom pipe 408 is connected to the lowest point of the water curtain ball 407.

[0068] Reference Fig.12 An outlet 4071 is provided on the outer surface of the water curtain ball 407, and the outlet 4071 is used for allowing the airflow mixed with dust to leave. Preferably, the outlet 4071 is located below the short axis of the water curtain ball 407, and the outlet 4071 is arranged vertically. A plurality of outlets 4071 are arranged in an array along the circumferential direction of the short axis section of the water curtain ball 407, and the short axis section refers to the section of the water curtain ball 407 that is horizontally arranged and includes the short axis.

[0069] Furthermore, a plurality of water curtain balls 407 are provided, and a plurality of downpipes 409 and bottom pipes 408 are provided correspondingly.

[0070] Working process of embodiment 2:

[0071] The water is drawn by the water pump technology, falls onto the water curtain ball 407 through the water main pipe 405 and the downpipe 409, and flows downward along the outer surface of the water curtain ball 407, thereby forming an elliptical water curtain on the outer surface of the water curtain ball 407;

[0072] The blower 402 is running, actively sucking the air in the mixing box 100, and the dust will flow with the air. Specifically, the dust and air enter the water curtain ball 407 through the air pipe 1 401, the air pipe 2 403, the air main pipe, and the bottom pipe 408, and are discharged through the outlet 4071. During the discharge process, the dust and air will pass through the water curtain, and the dust will be absorbed by the water curtain and fall into the dust removal box 404, and the air will be discharged through the exhaust pipe 406. In this way, the purpose of dust removal is achieved. It should be noted that a drain pipe can be set at the bottom of the dust removal box 404, and a solenoid valve can be set on the drain pipe. After a period of time, there is more waste water in the dust removal box 404, and the solenoid valve can be opened to drain the waste liquid through the drain pipe.

[0073] In the above dust removal process:

[0074] 1. Since the water curtain is elliptical in shape, based on the Bernoulli principle, the flow of the water curtain will generate negative pressure, which will make the surrounding air close to the water curtain. Therefore, when the air passes through the water curtain, if the dust removal is not thorough and dust escapes, the negative pressure will pull the dust close to the water curtain again, that is, the water curtain can capture the escaped dust, and the dust removal effect is significantly enhanced;

[0075] 2. Based on the Bernoulli principle, the water curtain has the greatest capture capability at the short axis of the water curtain ball 407, and the outlet 4071 for dust and air to leave is located just below the short axis. Therefore, the performance of the water curtain in capturing escaping dust can be maximized.

[0076] 3. Since the outlet 4071 is arranged vertically, the distance between the air and the water curtain is closer after passing through the water curtain, which is more conducive to the water curtain's performance in capturing escaping dust. On the contrary, if the outlet 4071 is not arranged vertically, the air leaving through the outlet 4071 has an initial velocity in the horizontal direction. This initial velocity may cause the air to continue moving after passing through the water curtain, and the dust flows with the air, which may easily cause the escaping dust to move away from the water curtain, so that the performance of the water curtain in capturing escaping dust cannot be maximized.

[0077] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An asphalt concrete mixing station, comprising a mixing box (100), characterized in that: It also includes a stirring mechanism (200) and a driving source (300), wherein the stirring mechanism (200) includes a stirring bracket (201) that is slidably matched with the stirring box (100) and a linear module (106) for driving the stirring bracket (201) to move, and a plug hole (108) parallel to the sliding direction of the stirring bracket (201) is provided on the side of the stirring box (100); A stirring member (203) is mounted on the stirring support (201), the stirring member (203) comprising a stirring column (204) coaxial with the insertion hole (108), a connecting shaft (205) coaxially extending from the end of the stirring column (204), the connecting shaft (205) being driven to rotate by a motor (202) arranged on the stirring support (201), a core groove coaxially arranged inside the stirring column (204), the core groove being connected to the connecting shaft (205) in the shape of a hollow shaft, a mounting hole being radially arranged on the outer circumferential surface of the stirring column (204), the mounting hole being connected to the core groove, a plurality of mounting holes being arranged in an array on the outer circumferential surface of the stirring column (204), a group of stirring components (206) being arranged in each mounting hole, the stirring components (206) being able to extend out of or retract into the mounting hole; including a dust removal mechanism (400); An air nozzle (105) is provided at the upper end of the mixing box (100), and an air hole (107) is provided on the outer surface of the mixing box (100); The dust removal mechanism (400) comprises a blower (402) and a dust removal box (404); the air inlet end of the blower (402) is connected to the air nozzle (105) via an air pipe 1 (401); the air outlet end of the blower (402) is provided with an air pipe 2 (403); and the end of the air pipe 2 (403) is provided with an air main pipe; A dust removal component is arranged in the dust removal box (404), an exhaust pipe (406) is arranged on the outer surface of the dust removal box (404), a water main pipe (405) is arranged at the upper end of the dust removal box (404), a downpipe (409) is extended from the lower end surface of the water main pipe (405), water is drawn through the water main pipe (405) and the downpipe (409) in sequence by a water pump technology to fall onto the dust removal component, and a water curtain is formed, a bottom pipe (408) is extended from the upper end of the air main pipe, and the upper end of the bottom pipe (408) is connected to the dust removal component; The dust removal component comprises a water curtain ball (407), the water curtain ball (407) is in the shape of an ellipsoid with a hollow interior and a long axis arranged vertically, the downpipe (409) is located above the highest point of the water curtain ball (407), the upper end of the bottom pipe (408) is connected to the lowest point of the water curtain ball (407), an outlet (4071) is provided on the outer surface of the water curtain ball (407), and a plurality of outlets (4071) are arranged in an array along the circumferential direction of the short axis section of the water curtain ball (407), wherein the short axis section refers to a section of the water curtain ball (407) that is arranged horizontally and includes the short axis; The outlet (4071) is located below the short axis of the water curtain ball (407), and the outlet (4071) is arranged vertically.

2. An asphalt concrete mixing station according to claim 1, characterized in that: The stirring assembly (206) includes an outer sleeve column (2061) sleeved in the mounting hole, an outer sleeve column (2061) is provided with an external step one at one end facing the axis of the stirring column (204), an inner step one is provided at the opening of the mounting hole away from the axis of the stirring column (204), the outer sleeve column (2061) is hollow inside and sleeved with an inner sliding column (2062), an outer sleeve column (2062) is provided with an external step two at one end facing the axis of the stirring column (204), and an inner step two is provided at the opening of the outer sleeve column (2061) away from the axis of the stirring column (204).

3. An asphalt concrete mixing station according to claim 2, characterized in that: Two mounting holes are arranged in an array along the circumferential direction of the stirring column (204) to form a mounting hole assembly, and a plurality of mounting hole assemblies are arranged in an array along the axial direction of the stirring column (204); The facing ends of the outer sleeve columns (2061) in the two mounting holes in the mounting hole assembly are in contact, and the side holes (2063) are arranged on the portions of the outer sleeve columns (2061) extending into the core grooves.

4. An asphalt concrete mixing station according to claim 2, characterized in that: The ends of the outer sleeve column (2061) and the inner slide column (2062) facing away from the stirring column (204) are in an arc shape, and when the stirring assembly (206) is retracted into the mounting hole, the stirring column (204) presents a complete cylindrical shape.

5. An asphalt concrete mixing station according to claim 2, characterized in that: The driving source (300) comprises an oil storage tank (301) and a hydraulic cylinder (302); one end of the hydraulic cylinder (302) is connected to the oil storage tank (301), and the other end is connected to the connecting shaft (205) via a connecting pipe (500).

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