A production line for producing asphalt modifiers from waste plastics

Abstract

The present application relates to the field of waste plastic recycling, solve the problem of the prior art for different physical properties of raw materials need to be laid independent production line, resulting in larger floor area, higher economic cost, provide a kind of production line for asphalt modifier using waste plastic, including: first mixing zone, second mixing zone, mixed crushing zone, the first mixing zone is made into hard sheet material;The second mixing zone is made into elastic sheet material;The hard sheet material and the elastic sheet material converge in the mixed crushing zone, and the initial broken material is obtained by crushing.The present application combines the rear end of two production lines, which can reduce the layout area and reduce the production cost;The size of the two types of waste material after crushing meets the feeding requirements of the grinding area, thus, the present application also conceives a control method for the crushing parameters of the mixed crushing zone, and under the premise of meeting the ratio of hard raw materials and elastic raw materials in the asphalt modifier formula, the optional crushing parameter range is obtained.

Description

Technical Field

[0001] This invention relates to the field of waste plastic recycling, and more specifically, to a production line for producing asphalt modifiers from waste plastics. Background Technology

[0002] Asphalt modifiers are additives used to improve the properties of asphalt. Adding modifiers can enhance the durability, rutting resistance, low-temperature crack resistance, and fatigue performance of asphalt mixtures. Common asphalt modifiers include polymer modifiers, resin modifiers, and modifiers made from waste plastics. With increasing environmental awareness, using waste plastics as raw materials to manufacture asphalt modifiers has become a research hotspot. This method not only benefits environmental protection but also reduces production costs. However, in the process of asphalt modification, different types of modifiers often need to be blended to achieve better results. For example, polymer modifiers can improve the ductility and elastic recovery of asphalt, while resin modifiers can increase the softening point and viscosity of asphalt to improve its high-temperature stability. When producing mixed modifiers, due to the different properties of the raw materials, independent production lines are often required, leading to problems such as large land area requirements and high economic costs. Summary of the Invention

[0003] The purpose of this invention is to provide a production line for producing asphalt modifiers from waste plastics, which solves the problem in the prior art that requires the deployment of independent production lines for raw materials with different physical properties, resulting in a large footprint and high economic cost.

[0004] The embodiments of the present invention are achieved through the following technical solutions:

[0005] A production line for producing asphalt modifiers from waste plastics includes:

[0006] The first mixing zone is used for mixing rigid waste plastics.

[0007] The second mixing zone is used for mixing elastic waste materials;

[0008] In the mixed crushing zone, the output from the first mixing zone is made into hard sheets; the output from the second mixing zone is made into elastic sheets; the hard sheets and the elastic sheets are gathered in the mixed crushing zone and crushed to obtain primary crushed material.

[0009] Preferably, the production line further includes a grinding zone, where the primary crushed material is ground to obtain an asphalt modifier.

[0010] Preferably, the method for adjusting the crushing parameters in the mixed crushing zone includes:

[0011] S100. Obtain the relationship between the ratio of rigid sheet material to elastic sheet material, the crushing parameters of the mixed crushing zone, and the discharge parameters of the mixed crushing zone through historical data.

[0012] S200. Based on the ratio of hard raw materials to elastic raw materials in the asphalt modifier formulation and the feeding requirements of the grinding zone, the range of selectable crushing parameters for the mixed crushing zone is obtained.

[0013] Preferably, the method for obtaining the discharge parameters of the mixing and crushing zone includes:

[0014] When the hard primary crushed material meets the feeding requirements of the grinding zone, the discharge parameters of the hard sheet are assigned to 1 or 0.

[0015] When the hard primary crushed material does not meet the feeding requirements of the grinding zone, the discharge parameters of the hard sheet are assigned to 0 or 1.

[0016] When the elastic primary crushed material meets the feeding requirements of the grinding zone, the discharge parameters of the elastic sheet are assigned to 1 or 0.

[0017] When the elastic primary crushed material does not meet the feeding requirements of the grinding zone, the discharge parameter of the elastic sheet is assigned a value of 0 or 1.

[0018] The discharge parameters of the mixed crushing zone are equal to the product of the discharge parameters of the rigid sheet and the discharge parameters of the elastic sheet.

[0019] Preferably, the crushing parameters include one or more of rotational speed and time.

[0020] Preferably, when the crushing parameters are within the rated crushing parameter range of the mixed crushing zone, the ratio of hard sheet material to elastic sheet material is adjusted according to the ratio of hard raw material to elastic raw material in the asphalt modifier formula. When the discharge parameters of the mixed crushing zone do not meet the feeding requirements of the grinding zone, the thickness ratio of hard sheet material to elastic sheet material is adjusted.

[0021] Preferably, the method for adjusting the thickness ratio of the rigid sheet to the elastic sheet includes:

[0022] The ratio of rigid sheet material to elastic sheet material should be controlled to be consistent with the ratio of rigid raw material to elastic raw material in the asphalt modifier formulation.

[0023] D100: Obtain the relationship between the thickness ratio of rigid sheet to elastic sheet, the crushing parameters of the mixed crushing zone, and the discharge parameters of the mixed crushing zone through historical data.

[0024] D200. Based on the feeding requirements of the grinding zone, the range of selectable thickness ratios for rigid sheets and elastic sheets is obtained.

[0025] Preferably, the first mixing zone is connected to the mixing and crushing zone via a first conveying device; the second mixing zone is connected to the mixing and crushing zone via a second conveying device.

[0026] The ratio of hard raw materials to elastic raw materials in the asphalt modifier formula is used to control the transport speed ratio between the first and second transport devices.

[0027] Preferably, the transport speed ratio between the first transport device and the second transport device is obtained by the ratio m of rigid raw material to elastic raw material and the thickness ratio n of rigid sheet to elastic sheet.

[0028] Preferably, the production line also includes:

[0029] The hard waste crushing zone and the first granulation zone are connected in sequence, and the outlet of the hard waste granulation zone is connected to the inlet of the first mixing zone;

[0030] The elastic waste crushing zone and the second granulation zone are connected in sequence, and the outlet of the hard waste granulation zone is connected to the inlet of the first mixing zone.

[0031] The present invention has at least the following beneficial effects:

[0032] This invention classifies waste materials according to their physical properties, dividing them into elastic waste and hard waste. Both are then crushed in the same mixed crushing zone. However, due to the differences in their physical properties, the output size varies under the same crushing parameters, making it difficult to control the size of both types of waste after crushing to meet the feeding requirements of the grinding zone. Therefore, this invention also conceives of a method for adjusting the crushing parameters in the mixed crushing zone. Under the premise of satisfying the ratio of hard to elastic raw materials in the asphalt modifier formulation, a range of selectable crushing parameters is obtained, ensuring that the output of both types of waste meets the feeding requirements of the grinding zone. Because this invention combines the back-end production lines of two separate production lines, it reduces the layout area and lowers production costs. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A schematic diagram illustrating the production process of asphalt modifiers using waste plastics. Detailed Implementation

[0035] To make the objectives, methods, and advantages of the embodiments of the present invention clearer, the methods in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0036] Example 1: As Figure 1 As shown, a production line for producing asphalt modifiers from waste plastics includes:

[0037] The first mixing zone is used for mixing rigid waste plastics.

[0038] The second mixing zone is used for mixing elastic waste materials;

[0039] In the mixed crushing zone, the output from the first mixing zone is made into hard sheets; the output from the second mixing zone is made into elastic sheets; the hard sheets and the elastic sheets are gathered in the mixed crushing zone and crushed to obtain primary crushed material.

[0040] In practice, when the asphalt modifier formulation contains both elastic and hard materials, such as elastic resin and hard plastic, and the product is a pre-formulated composite modifier, the materials need to be mixed and packaged according to the component ratios in the formulation during production. Furthermore, in the process of producing asphalt modifiers from waste materials, differences in the compatibility of the various substances can affect the compatibility of the mixed materials. Also, depending on the formulation requirements, the mixing process usually does not involve mixing all raw materials together, but rather mixing them in groups. This necessitates setting up multiple mixing zones, and the physical properties of the outputs from different mixing zones are also different. If they are mixed and crushed together, it is difficult to ensure that, under the same crushing parameters, the size of the different materials meets the feeding requirements of the grinding zone. Therefore, in the process layout, a separate crushing zone needs to be set up after each mixing zone, resulting in a complex process, a large footprint, and high economic costs.

[0041] Based on the above production situation, the applicant hopes to crush the outputs from each mixing zone together to reduce the floor space required for the process layout. Therefore, the production line has been improved. In this embodiment, the first mixing zone for mixing rigid waste plastics refers to its output product being a rigid material. The second mixing zone for mixing elastic waste refers to its output product being an elastic material.

[0042] As an example, since the physical properties of materials are generally related to the length of the polymer chain and the types of functional groups, and the compatibility during mixing is related to the degree of structural difference between the materials, the mixing groups can basically follow the principle of mixing hard waste materials together and elastic waste materials together. The feed for the first mixing zone uses a variety of hard plastic particles, such as polyethylene and polypropylene. The feed for the second mixing zone uses a variety of elastic waste particles, such as rubber and rosin resin.

[0043] As an example, the material output from the mixing zone can be pressed into sheets using a calendering process. The elastic sheets and rigid sheets have the same length and width, but their thicknesses can be the same or different.

[0044] As an example, after grinding and discharging, products that do not meet the particle size requirements are screened out and returned to the grinding area for further grinding.

[0045] Example 2: In this example, the production line further includes a grinding zone, where the initial crushed material is ground to obtain asphalt modifier.

[0046] In specific implementation, the grinding zone can reduce the difference in physical properties between elastic waste and hard waste through low-temperature grinding technology. The elasticity of elastic waste decreases at low temperatures, thus reducing the elasticity difference between it and hard waste. This makes the grinding effects of both materials similar in the same grinding zone, thereby achieving a more efficient grinding process. Figure 1 As shown, a grinding zone can also be used after the mixing and crushing zone to grind the mixed materials. The overall production line layout is as follows. Figure 1 As shown, the upstream process section is a parallel production line. The number of parallel production lines can be adjusted according to the asphalt modifier formula. This embodiment only shows two parallel production lines, but the number of production lines can be increased according to actual conditions. After the mixing zone, a single production line can be used. The mixing and crushing zone and the grinding zone can use intermittent feeding. Material transfer between each process can be achieved through conveyor belts.

[0047] The feed parameters for the grinding zone can be that the feed particle size is no greater than 20mm.

[0048] Example 3: To ensure that the particle size of all materials discharged from the mixing and crushing zone meets the feed parameters of the grinding zone after mixing and crushing all materials, an improvement was made based on Example 1. In this example, the method for controlling the crushing parameters of the mixing and crushing zone includes:

[0049] S100. Obtain the relationship between the ratio of rigid sheet material to elastic sheet material, the crushing parameters of the mixed crushing zone, and the discharge parameters of the mixed crushing zone through historical data.

[0050] S200. Based on the ratio of hard raw materials to elastic raw materials in the asphalt modifier formulation and the feeding requirements of the grinding zone, the range of selectable crushing parameters for the mixed crushing zone is obtained.

[0051] In practice, the length, width, and height of the rigid sheet and the elastic sheet can be the same. The ratio of rigid raw materials to elastic raw materials determines the proportion of rigid sheet to elastic sheet used. The crushing parameters in the mixed crushing zone can include either rotational speed or time. Rotational speed mainly refers to the rotational speed of the crushing rollers or cutting blades. The discharge parameter can be the average particle size of the discharged material.

[0052] As an example, with both rigid and elastic sheets having the same specifications, experiments were conducted to control the quantity or mass ratio of rigid to elastic sheets during a single feeding, obtaining the output particle size at different crushing speeds. The relationship curve between the dosage ratio, crushing parameters, and output parameters could then be obtained from relevant experimental data. This relationship curve could be discontinuous. In actual production, the asphalt modifier formulation may require continuous improvement. Therefore, based on the current raw material ratio in the asphalt modifier formulation—that is, the relationship between rigid and elastic sheets—the crushing parameters that match the current mill's feed parameters can be found in the aforementioned curve.

[0053] There may be multiple acceptable crushing parameters. You can choose the parameter with the highest value within the rated crushing parameter range to improve production efficiency, or you can choose the parameter with the highest output particle size uniformity within the rated crushing parameter range to improve subsequent grinding efficiency. Output particle size uniformity mainly refers to the difference in particle size between hard and elastic sheets after crushing.

[0054] Example 4: To simplify data acquisition, improvements were made based on Example 3. In this example, the method for acquiring the discharge parameters of the mixing and crushing zone includes:

[0055] When the hard primary crushed material meets the feeding requirements of the grinding zone, the discharge parameters of the hard sheet are assigned to 1 or 0.

[0056] When the hard primary crushed material does not meet the feeding requirements of the grinding zone, the discharge parameters of the hard sheet are assigned to 0 or 1.

[0057] When the elastic primary crushed material meets the feeding requirements of the grinding zone, the discharge parameters of the elastic sheet are assigned to 1 or 0.

[0058] When the elastic primary crushed material does not meet the feeding requirements of the grinding zone, the discharge parameter of the elastic sheet is assigned a value of 0 or 1.

[0059] The discharge parameters of the mixed crushing zone are equal to the product of the discharge parameters of the rigid sheet and the discharge parameters of the elastic sheet.

[0060] In practice, after the elastic and rigid sheets are crushed and discharged from the mixed crushing zone, their particle sizes must meet the feeding requirements of the grinding zone. If the obtained discharge data directly represents the particle sizes of different types of sheets after crushing, data processing becomes quite difficult. This embodiment significantly reduces the difficulty of data processing by using a discharge parameter assignment method. Specifically, the discharge parameter is assigned different values ​​depending on whether the feeding requirements of the grinding zone are met or not; one is assigned a value of 1, and the other a value of 0.

[0061] As an example, if the feed requirements of the grinding zone are met, the discharge parameter is assigned a value of 1; if the feed requirements of the grinding zone are not met, the discharge parameter is assigned a value of 0. See below for details:

[0062] When the discharge particle size of both the hard sheet and the elastic sheet meets the feeding requirements of the grinding zone, the discharge parameters of both the hard sheet and the elastic sheet are 1. Then the discharge parameters of the mixed crushing zone are 1*1=1.

[0063] When the discharge particle size of the crushed rigid sheet meets the feeding requirements of the grinding zone, while the discharge particle size of the crushed elastic sheet does not meet the feeding requirements of the grinding zone, the discharge parameter of the rigid sheet is 1, and the discharge parameter of the elastic sheet is 0. Then the discharge parameter of the mixed crushing zone is 1*0=0.

[0064] When the output particle size of the crushed elastic sheet meets the feeding requirements of the grinding zone, while the output particle size of the crushed hard sheet does not meet the feeding requirements of the grinding zone, the output parameter of the elastic sheet is 1, and the output parameter of the hard sheet is 0. Then the output parameter of the mixed crushing zone is 1*0=0.

[0065] When the output particle size of both the hard sheet and the elastic sheet after crushing does not meet the feeding requirements of the grinding zone, the output parameters of both the hard sheet and the elastic sheet are 0, and the output parameters of the mixed crushing zone are 0*0=0.

[0066] As can be seen from the above, when the discharge parameter of the mixed crushing zone is 1, the discharge of different sheets in the mixed crushing zone meets the requirements of the grinding zone. When the discharge parameter of the mixed crushing zone is 0, at least one type of sheet will not meet the requirements of the grinding zone in terms of crushing discharge.

[0067] When there are two or more composite particles in the formulation of asphalt modifier, the assignment method can greatly simplify the data processing process.

[0068] Example 5: In this example, the crushing parameters include one or more of rotational speed and time.

[0069] In practical implementation, the crushing devices in the mixed crushing zone can be roughly divided into two categories. One type involves the sheet material passing through one or more sets of horizontally positioned crushing rollers at a time for crushing. Each set has at least two opposing crushing rollers. In this crushing method, the time it takes for the sheet material to pass through the crushing roller set is primarily affected by the rotational speed, so only the rotational speed can be selected as the crushing parameter. The other type involves the sheet material being continuously crushed by cutting blades within the crushing chamber. In this case, either the rotational speed or time can be selected as the crushing parameter. During the acquisition of experimental data, one parameter can be fixed while the other is adjusted; for example, with a fixed crushing time, the rotational speed can be adjusted to obtain experimental data. Of course, under normal circumstances, the output particle size is directly proportional to the rotational speed and crushing time; the product of the rotational speed and time can also be used as the crushing parameter.

[0070] Example 6: To improve the applicability of the production line, improvements were made based on Example 3. In this example, when the crushing parameters are within the rated crushing parameter range of the mixed crushing zone, the ratio of hard sheet to elastic sheet is adjusted according to the ratio of hard raw material to elastic raw material in the asphalt modifier formula. When the output parameters of the mixed crushing zone do not meet the feeding requirements of the grinding zone, the thickness ratio of hard sheet to elastic sheet is adjusted.

[0071] In the specific implementation process, the mixing and crushing zone uses existing crushing equipment, which is generally set with maximum crushing parameters that the equipment can withstand, such as maximum rotational speed. In this embodiment, the rated crushing parameter range refers to the crushing parameters used being less than or equal to the maximum crushing parameters. When the elastic sheet and the rigid sheet have completely identical specifications, but the output of different sheets cannot meet the feeding requirements of the grinding zone by adjusting the crushing parameters, the output parameters of the two can be further adjusted by increasing the thickness difference between the rigid sheet and the elastic sheet. The thickness adjustment of the rigid sheet and the elastic sheet can be achieved through the extrusion and sheet forming process after mixing. The extrusion and sheet forming process after mixing is existing technology and will not be described in detail in this embodiment.

[0072] When using the production line provided in this embodiment, even if the output requirements cannot be met by adjusting the crushing parameters, the output parameters can be adjusted by adjusting the thickness difference between different sheets.

[0073] As an example, the feed requirements for the grinding zone are defined as follows: at least 98% of the products from the same type of crushed sheet meet the particle size requirements. To better distinguish materials when sampling and testing the output parameters of different sheets, color masterbatch can be added during mixing to make different types of sheets have different colors.

[0074] Example 7: In this example, the method for adjusting the thickness ratio of the rigid sheet to the elastic sheet includes:

[0075] The ratio of rigid sheet material to elastic sheet material should be controlled to be consistent with the ratio of rigid raw material to elastic raw material in the asphalt modifier formulation.

[0076] D100: Obtain the relationship between the thickness ratio of rigid sheet to elastic sheet, the crushing parameters of the mixed crushing zone, and the discharge parameters of the mixed crushing zone through historical data.

[0077] D200. Based on the feeding requirements of the grinding zone, the range of selectable thickness ratios for rigid sheets and elastic sheets is obtained.

[0078] In the specific implementation process, once the asphalt modifier formula is completely determined, the ratio of rigid sheets to elastic sheets is determined. Typically, they are mixed and crushed by weight ratio. Therefore, in actual production, the thickness ratio k between the sheets can be controlled by the density ratio a, the quantity ratio b, and the total weight ratio f, where k = f / (ab).

[0079] As an example, the base thickness can be selected as 1 mm. When the thickness ratio of the elastic sheet to the rigid sheet is 1:1.2, the thickness of the elastic sheet is 1 mm and the thickness of the rigid sheet is 1.2 mm.

[0080] As an example, there can be multiple selectable thickness ratios. When choosing the optimal thickness ratio, the one that yields the highest uniformity of output particle size can be selected to improve subsequent grinding efficiency. Output particle size uniformity mainly refers to the difference in particle size between the crushed rigid and elastic sheets.

[0081] Example 8: To better achieve process control, improvements were made based on Examples 1-7. In this example, the first mixing zone is connected to the mixing and crushing zone through a first conveying device; the second mixing zone is connected to the mixing and crushing zone through a second conveying device.

[0082] The ratio of hard raw materials to elastic raw materials in the asphalt modifier formula is used to control the transport speed ratio between the first and second transport devices.

[0083] In practice, the width of the conveying surfaces of the first and second conveying devices can be the same. To facilitate the parallel layout of each mixing zone, the conveying distance between each mixing zone and the mixing and crushing zone can also be the same. When the rigid and elastic sheets are laid in the same way on the conveying devices, the weight ratio of different sheets entering the mixing and crushing zone is related to the speed ratio of the two conveying devices, the thickness ratio of the sheets, and the density ratio of the sheets. When the thickness ratio and density ratio of the sheets are fixed, the weight ratio of each sheet entering the mixing and crushing zone is determined by the speed ratio of the conveying devices.

[0084] In this embodiment, the transportation speed ratio between the first transportation device and the second transportation device is obtained by the ratio m of rigid raw material to elastic raw material and the thickness ratio n of rigid sheet to elastic sheet.

[0085] In the specific implementation process, m is the weight ratio. When the length and width of the rigid sheet and the elastic sheet are the same, and the structure and size of the first transport device and the second transport device are the same, the speed ratio of the first transport device and the second transport device is p=m / (an), where a is the density ratio of the rigid sheet and the elastic sheet.

[0086] Example 9: As Figure 1 As shown, in this embodiment, the production line further includes:

[0087] The hard waste crushing zone and the first granulation zone are connected in sequence, and the outlet of the hard waste granulation zone is connected to the inlet of the first mixing zone;

[0088] The elastic waste crushing zone and the second granulation zone are connected in sequence, and the outlet of the hard waste granulation zone is connected to the inlet of the first mixing zone.

[0089] In practice, after recycling different types of waste plastics, they can be crushed in groups according to plastic type. After crushing, they are melted and granulated so that the output of the granulation zone meets the input requirements of the mixing zone. Since the raw materials of the mixing zone are various types of waste, multiple granulation zones can be set up before the first or second mixing zone according to the actual formula of the asphalt modifier to granulate different recycled plastics.

[0090] In actual production, finished products formed by plastic recycling and granulation can be purchased directly as raw materials, reducing the need for waste crushing and granulation areas in the work area layout.

[0091] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A production line for producing asphalt modifier from waste plastics, characterized in that, The method comprises the following steps: A first mixing area for mixing hard waste plastics; A second mixing area for mixing elastic waste materials; A mixing and crushing area, the output of the first mixing area is made into hard sheets, the output of the second mixing area is made into elastic sheets, the hard sheets and the elastic sheets are collected in the mixing and crushing area, and the initial crushed materials are obtained by crushing; A grinding area, the initial crushed materials are ground in the grinding area to obtain asphalt modifiers; The method for adjusting the crushing parameters of the mixing and crushing area comprises the following steps: S100, obtaining the relationship between the usage ratio of the hard sheets and the elastic sheets, the crushing parameters of the mixing and crushing area, and the output parameters of the mixing and crushing area through historical data; S200, obtaining the optional crushing parameter range of the mixing and crushing area according to the mixing ratio of the hard raw materials and the elastic raw materials in the asphalt modifier formula and the feeding requirements of the grinding area; The crushing parameters include one or more of the rotating speed and the time; When the crushing parameters are within the rated crushing parameter range of the mixing and crushing area, the usage ratio of the hard sheets and the elastic sheets is adjusted according to the mixing ratio of the hard raw materials and the elastic raw materials in the asphalt modifier formula, and the output parameters of the mixing and crushing area do not all meet the feeding requirements of the grinding area, the thickness ratio of the hard sheets and the elastic sheets is adjusted; The method for adjusting the thickness ratio of the hard sheets and the elastic sheets comprises the following steps: The usage ratio of the hard sheets and the elastic sheets is consistent with the mixing ratio of the hard raw materials and the elastic raw materials in the asphalt modifier formula; D100, obtaining the relationship between the thickness ratio of the hard sheets and the elastic sheets, the crushing parameters of the mixing and crushing area, and the output parameters of the mixing and crushing area through historical data; D200, obtaining the optional thickness ratio range of the hard sheets and the elastic sheets according to the feeding requirements of the grinding area; The adjustment of the thickness of the hard sheets and the elastic sheets is realized through the sheet forming process after mixing.

2. The production line according to claim 1, characterized in that, The output parameters of the mixing and crushing area are obtained in the following manner: When the hard initial crushed materials meet the feeding requirements of the grinding area, the output parameter of the hard sheets is assigned as 1 or 0; When the hard initial crushed materials do not meet the feeding requirements of the grinding area, the output parameter of the hard sheets is assigned as 0 or 1; When the elastic initial crushed materials meet the feeding requirements of the grinding area, the output parameter of the elastic sheets is assigned as 1 or 0; When the elastic initial crushed materials do not meet the feeding requirements of the grinding area, the output parameter of the elastic sheets is assigned as 0 or 1; The output parameter of the mixing and crushing area is equal to the product of the output parameters of the hard sheets and the elastic sheets.

3. The production line according to claim 1 or 2, characterized in that, The first mixing area is connected with the mixing and crushing area through a first conveying device, and the second mixing area is connected with the mixing and crushing area through a second conveying device; The conveying speed ratio of the first conveying device and the second conveying device is adjusted according to the mixing ratio of the hard raw materials and the elastic raw materials in the asphalt modifier formula.

4. The production line according to claim 3, characterized in that, The conveying speed ratio of the first conveying device and the second conveying device is obtained through the mixing ratio m of the hard raw materials and the elastic raw materials and the thickness ratio n of the hard sheets and the elastic sheets.

5. The production line according to claim 3, characterized in that, Further comprising: A hard waste crushing area and a first granulating area connected in sequence, and the outlet of the first granulating area is connected with the inlet of the first mixing area; A second granulation zone in serial communication with an elastic scrap breaking zone, the outlet of the second granulation zone being in communication with the inlet of the second mixing zone.

Images