A modified asphalt production device

Abstract

The present invention is applicable to the field of asphalt production equipment, and discloses a modified asphalt production device, including a premixing tank, a base asphalt storage tank, a modifier storage tank, a crusher, a vibrating screen, a coarse material collection box, a first vacuum suction machine and a bucket elevator. The present invention can use the vibrating screen to screen out the SBS modifier whose particle size meets the production requirements by arranging the vibrating screen below the crusher, and the SBS modifier whose particle size does not meet the production requirements can be transported to the crusher again for crushing by means of the first vacuum suction machine, thereby ensuring that the SBS modifier can be effectively crushed, and the waste of the SBS modifier can be reduced. In addition, while the base asphalt is fully modified, the present invention can also enhance the stability and performance of the base asphalt, and the mixing time of the SBS modifier and the base asphalt can be shortened, while reducing the energy consumption of the premixing tank, it can also improve production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt production equipment, and in particular to a modified asphalt production device. Background Art

[0002] In order to comprehensively improve the performance of asphalt pavement, the use of modified asphalt is one of the effective measures. The newly revised highway design specifications and asphalt pavement construction specifications clearly require the comprehensive promotion of modified asphalt. The upper and middle layers of highway asphalt pavements basically use modified asphalt. At present, the most commonly used modified asphalts are SBR, PE, EVA, rubber powder, SBS, etc., and SBS has been the most widely used in recent years because of its good two-way modification performance (that is, the ability to simultaneously change the high and low temperature properties of the base asphalt).

[0003] SBS modified asphalt is prepared using styrene-butadiene-styrene block copolymer (i.e. SBS) as a modifier. Through the physical blending process, SBS absorbs aromatic hydrocarbons and colloids in the asphalt, causing swelling to form a new colloidal structure system, that is, forming a network structure in the asphalt, thereby comprehensively improving the performance of the asphalt.

[0004] The Chinese patent document with the announcement number CN208104299U discloses a SBS modified asphalt production system, including a premixing tank, an intermediate tank and a development tank; the upper part of the premixing tank is provided with a matrix asphalt inlet pipeline, and the top of the premixing tank is provided with an SBS modifier and a stabilizer feed port. However, the SBS modifier has a caking situation after being stored for a long time. If the agglomerated SBS modifier is mixed with the matrix asphalt, the problem of uneven mixing of the SBS modifier and the matrix asphalt is prone to occur. Therefore, the SBS modifier needs to be crushed before mixing with the matrix asphalt. However, the existing SBS modifier crusher cannot guarantee that all SBS modifiers can be effectively crushed, so there will still be some agglomerated SBS modifiers mixed with the matrix asphalt, and the problem of uneven mixing of the SBS modifier and the matrix asphalt will occur.

[0005] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0006] The present invention provides a modified asphalt production device, aiming to solve the problem of uneven mixing of the SBS modifier and the base asphalt when the SBS modifier and the base asphalt are put into a premixing tank together.

[0007] To achieve the above object, the solution provided by the present invention is:

[0008] A modified asphalt production device comprises a premixing tank and a base asphalt storage tank; the premixing tank is connected to the base asphalt storage tank; and further comprises:

[0009] A crusher, wherein the crusher is used to crush the SBS modifier;

[0010] A modifier storage tank, wherein the modifier storage tank is mounted above the crusher and connected to the crusher, and the modifier storage tank stores SBS modifier;

[0011] A vibrating screen, wherein the vibrating screen is mounted below the crusher, and the feed port of the vibrating screen is connected to the discharge port of the crusher, and the vibrating screen has a fine material outlet and at least one coarse material outlet;

[0012] A coarse material collecting box, the coarse material collecting box is used to collect the SBS modifier discharged from the coarse material outlet;

[0013] A first vacuum suction machine, which is connected to the coarse material collection box and is used to transport the SBS modifier in the coarse material collection box to the crusher;

[0014] A bucket elevator is used to transport the SBS modifier discharged from the fine material outlet to a premixing tank.

[0015] Optionally, the crusher includes a casing, a crushing roller group arranged in parallel in the casing, and two guide plates arranged below the crushing roller group and forming a V shape.

[0016] Optionally, the modified asphalt production device also includes a feeding platform, a first weight sensor, a first discharge pipe and a first discharge butterfly valve; the modifier storage tank is mounted on the feeding platform; the first weight sensor is arranged on the feeding platform, and the first weight sensor is fixedly connected to the tank wall of the modifier storage tank; the first discharge pipe is connected to the crusher, and the first discharge butterfly valve is arranged on the first discharge pipe.

[0017] Optionally, the bucket elevator includes an elevator body, a feed hopper arranged at the tail of the elevator body, a fourth discharge pipe arranged at the head of the elevator body, a discharge hopper mounted on the feeding platform, a second weight sensor arranged on the feeding platform and used to detect the discharge hopper, a second discharge pipe connected to the bottom of the discharge hopper, and a second discharge butterfly valve arranged on the second discharge pipe; the second discharge pipe is connected to the top of the premixing tank.

[0018] Optionally, the fine material outlet of the vibrating screen is connected to a first flexible discharge pipe; the feed hopper is detachably provided with a first sealing cover plate, the first sealing cover plate is connected to a feed pipe, and the feed pipe is connected to the first flexible discharge pipe.

[0019] Optionally, the modified asphalt production device further comprises:

[0020] a first asphalt delivery pipe, wherein the first asphalt delivery pipe is connected to the bottom of the premixing tank;

[0021] Two colloid mills, the two colloid mills are arranged in parallel, and the input ends of the colloid mills are both connected to the first asphalt delivery pipe;

[0022] a second asphalt delivery pipe, wherein the second asphalt delivery pipe is connected to output ends of two colloid mills;

[0023] An asphalt development tank is connected to the second asphalt delivery pipe.

[0024] Optionally, a modifier collecting box is provided at the inner bottom of the elevator body, and a baffle is inserted into the elevator body horizontally and movably, and the baffle is located above the modifier collecting box.

[0025] Optionally, the bottom of the modifier collection box is conical, and the modified asphalt production device further comprises:

[0026] The second vacuum suction machine is connected to the modifier collecting box and is used to pump the SBS modifier in the modifier collecting box into the crusher.

[0027] The beneficial effects of the present invention are as follows: the present invention provides a modified asphalt production device, by arranging a vibrating screen under the crusher, so that the vibrating screen can be used to screen out SBS modifiers whose particle sizes meet the production requirements, and with the help of the first vacuum suction machine, the SBS modifiers whose particle sizes do not meet the production requirements can be transported to the crusher again for crushing, thereby ensuring that the SBS modifier can be effectively crushed and reducing the waste of the SBS modifier.

[0028] Since the SBS modifier is fully broken and does not agglomerate when it is mixed with the base asphalt, it can ensure that the SBS modifier is fully dispersed in the base asphalt, and the base asphalt can be fully modified while enhancing the stability and performance of the base asphalt. In addition, when the SBS modifier is fully dispersed in the base asphalt, SBS can absorb aromatic hydrocarbons and colloids in the asphalt in a shorter time, swell, and form a new colloidal structure system, so the mixing time of the SBS modifier and the base asphalt can be shortened, while reducing the energy consumption of the premixing tank, it can also improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the modified asphalt production device provided by the present invention.

[0030] Figure 2 It is a schematic diagram of the connection between the modifier storage tank and the crusher.

[0031] Figure 3 yes Figure 1 Enlarged view of part A.

[0032] Figure 4 yes Figure 1 Enlarged view of part B.

[0033] Figure 5 It is a structural schematic diagram of the bucket elevator.

[0034] Description of Figure Numbers:

[0035] 1- Premix tank; 2- Matrix asphalt storage tank;

[0036] 3-crusher; 301-housing; 302-crushing roller group; 303-material guide plate; 304-crusher discharge port;

[0037] 4- Modifier storage tank;

[0038] 5-vibrating screen; 501-feeding port of vibrating screen; 502-fine material outlet of vibrating screen; 503-coarse material outlet of vibrating screen;

[0039] 6-coarse material collection box; 7-first vacuum suction machine;

[0040] 8-bucket elevator; 801-elevator body; 802-feed hopper; 803-fourth discharge pipe; 804-discharge hopper; 805-second discharge pipe; 806-second discharge butterfly valve; 807-modifier collection box; 808-baffle; 809-second weight sensor; 810-fourth discharge butterfly valve;

[0041] 9-feeding platform; 10-first weight sensor; 11-first discharge pipe; 12-first discharge butterfly valve; 13-first flexible discharge pipe; 14-first sealing cover; 15-feeding pipe; 16-first asphalt delivery pipe; 17-colloid mill; 18-second asphalt delivery pipe; 19-asphalt development tank; 20-stabilizer addition tank; 21-third asphalt delivery pipe; 22-stabilizer storage tank; 23-third weight sensor; 24-third discharge pipe; 25-third discharge butterfly valve; 26-feeding hopper; 27-second sealing cover; 28-second flexible discharge pipe; 29-first stirring mechanism; 30-second vacuum suction machine; 31-branch pipeline; 32-screw feeding mechanism; 33-asphalt pump. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0045] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] See also Figures 1 to 5 The present invention provides a modified asphalt production device, including a premixing tank 1, a base asphalt storage tank 2, a modifier storage tank 4, a crusher 3, a vibrating screen 5, a coarse material collecting box 6, a first vacuum suction machine 7 and a bucket elevator 8.

[0047] Specifically, the matrix asphalt storage tank 2 is not limited to one, and matrix asphalt is stored in the matrix asphalt storage tank 2. An asphalt delivery pipeline is connected between the matrix asphalt storage tank 2 and the premixing tank 1, and a matrix asphalt filling port is usually provided on the top of the premixing tank 1. In order to enable the matrix asphalt to be smoothly delivered (needs to be delivered by an asphalt pump) to the premixing tank 1. A jacket is provided between the inner and outer tank walls of the matrix asphalt storage tank 2, and heat transfer oil can be introduced into the jacket, thereby keeping the matrix asphalt in the matrix asphalt storage tank 2 warm, so that the matrix asphalt is in a molten state, which is convenient for delivery.

[0048] Specifically, the modifier storage tank 4 stores SBS modifier, and the modifier storage tank 4 is mounted above the crusher 3. The bottom of the modifier storage tank 4 can be conical, and the bottom can be connected to the feed port of the crusher 3 through a pipeline. When a discharge butterfly valve is provided on the pipeline, and the discharge butterfly valve is opened, the SBS modifier in the modifier storage tank falls into the crusher 3 through the pipeline under the action of gravity, so that the agglomerated SBS modifier can be broken and dispersed. In order to enable the SBS modifier in the modifier storage tank 4 to be smoothly fed into the crusher 3, a spiral feeding mechanism can be provided in the modifier storage tank 4.

[0049] Specifically, the vibrating screen 5 is set up below the crusher 3, and the feed port 501 of the vibrating screen 5 is connected to the discharge port 304 of the crusher 3 (can be connected through a flexible pipe). The vibrating screen 5 has a fine material outlet 502 and at least one coarse material outlet 503. The coarse material collecting box 6 is used to collect the SBS modifier released from the coarse material outlet. The first vacuum suction machine 7 is connected to the coarse material collecting box 6, and is used to transport the SBS modifier in the coarse material collecting box 6 to the crusher 3, so that the SBS modifier whose particle size does not meet the production requirements of the mixed material is transported to the crusher 3 again for crushing, until the particle size of the SBS modifier meets the production requirements, the particles will fall into the bucket elevator 8 from the fine material outlet of the vibrating screen 5. When the SBS modifier falls into the bucket elevator 8, the SBS modifier can be transported to the premixing tank 1 through the bucket elevator 8, so that the SBS modifier whose particle size meets the production requirements is stirred and mixed with the matrix asphalt.

[0050] Specifically, the bottom discharge port 304 of the crusher 3 and the feed port 501 of the vibrating screen 5 can be connected through the second flexible discharge pipe 28. The material of the second flexible discharge pipe 28 can be the same material as the bag filter bag, thereby ensuring that the crushed SBS modifier can be transported to the vibrating screen 5, and the vibrating screen 5 can also vibrate normally to perform the screening operation.

[0051] Specifically, the coarse material outlet 503 of the vibrating screen 5 and the coarse material collecting box 6 may also be connected via the second flexible discharge pipe 28, thereby reducing dust generated during the discharge process.

[0052] It can be seen that the present invention arranges the vibrating screen 5 below the crusher 3, so that the vibrating screen 5 can be used to screen out the SBS modifier whose particle size meets the production requirements, and the SBS modifier whose particle size does not meet the production requirements can be transported to the crusher 3 for crushing again with the help of the first vacuum suction machine 7, thereby ensuring that the SBS modifier can be effectively crushed and reducing the waste of the SBS modifier.

[0053] Since the SBS modifier is fully broken and does not agglomerate when it is mixed with the base asphalt, it can ensure that the SBS modifier is fully dispersed in the base asphalt, and the base asphalt can be fully modified while enhancing the stability and performance of the base asphalt. In addition, when the SBS modifier is fully dispersed in the base asphalt, the SBS can absorb aromatic hydrocarbons and colloids in the asphalt in a shorter time, swell, and form a new colloidal structure system, so the mixing time of the SBS modifier and the base asphalt can be shortened, and the energy consumption of the premixing tank 1 can be reduced while the production efficiency can be improved.

[0054] Optionally, the crusher 3 includes a housing 301, a crushing roller group 302 arranged in parallel in the housing 301, and two guide plates 303 arranged below the crushing roller group 302 and forming a V shape. The crushing roller group 302 includes at least two crushing rollers with opposite rotation directions, and the crushing rollers are provided with crushing cutters. In order for the crushing rollers to rotate to crush the SBS modifier, the crusher 3 also includes a drive motor (not shown in the drawings), which can be one or two. The two guide plates 303 form a V shape, which can receive the crushed SBS modifier and guide the SBS modifier to the discharge port 304 at the bottom of the crusher 3, thereby allowing as much SBS modifier as possible in the crusher 3 to be sent to the vibrating screen 5.

[0055] In the above optional embodiment, the closed hopper of the first vacuum suction machine 7 can be set on the top of the casing 301, the casing 301 can be closed, and the top of the casing 301 can be connected to the bottom of the modifier storage tank 4 through a pipeline. After such a setting, dust can be avoided when feeding into the crusher 3, so that the environment of the production workshop can be improved.

[0056] Optionally, the modified asphalt production device further includes a feeding platform 9, a first weight sensor 10, a first discharge pipe 11 and a first discharge butterfly valve 12. The modifier storage tank 4 is mounted on the feeding platform 9, and the bottom of the modifier storage tank 4 is located below the feeding platform 9. There are multiple first weight sensors 10, which are arranged on the feeding platform 9 and fixedly connected to the tank wall of the modifier storage tank 4, so that the weight of the modifier storage tank 4 can be obtained through the first weight sensor 10. The first discharge pipe 11 is connected to the crusher 3, and the first discharge butterfly valve 12 is arranged on the first discharge pipe 11. The first discharge butterfly valve 12 can be an electric butterfly valve. When it is necessary to add SBS modifier into the crusher 3, the production personnel can open the first discharge butterfly valve 12 through the control system of the modified asphalt production device.

[0057] In the above optional embodiment, the first weight sensor 10 can be electrically connected to the controller, and the controller is connected to the display component, so that the production personnel can know the storage amount of the modifier in the modifier storage tank 4. When adding materials to the modifier storage tank 4 for storage, it can be prevented that the weight of the raw materials in the storage tank exceeds the maximum capacity of the storage tank design.

[0058] Optionally, the bucket elevator 8 includes an elevator body 801, a feed hopper 802, a fourth discharge pipe 803, a discharge hopper 804, a second weight sensor 809, a second discharge pipe 805, a second discharge butterfly valve 806, and a fourth discharge butterfly valve 810. The feed hopper 802 is arranged at the tail of the elevator body 801 (i.e., the lower side of the elevator body 801), and the feed port of the feed hopper 802 faces the fine material outlet 502 of the vibrating screen 5, so that the fine particle SBS modifier screened by the vibrating screen 5 can be transported to the premixing tank 1 through the bucket elevator 8.

[0059] The fourth discharge pipe 803 is provided at the head of the elevator body 801 (i.e., the upper side of the elevator body 801), the fourth discharge butterfly valve 810 is provided on the fourth discharge pipe 803, and the discharge hopper 804 is mounted on the feeding platform 9. A plurality of second weight sensors 809 are provided, and a plurality of second weight sensors 809 are provided on the feeding platform 9 around the outer wall of the discharge hopper 804. The second discharge pipe 805 is connected to the bottom of the discharge hopper 804, and the second discharge pipe 805 is connected to the feeding port at the top of the premixing tank 1.

[0060] In this optional embodiment, the second discharge butterfly valve 806 is arranged on the second discharge pipe 805, and the second discharge butterfly valve 806, the fourth discharge butterfly valve 810 and the second weight sensor 809 are all electrically connected to the control system of the modified asphalt production device. Taking into account that when the SBS modifier is transported by the bucket elevator 8, part of the SBS modifier will spill onto the inner bottom of the elevator body 801, the present invention provides a discharge hopper 804 connected to the fourth discharge pipe 803. When the SBS modifier is transported by the bucket elevator 8, the SBS modifier is first temporarily stored in the discharge hopper 804. When the second weight sensor 809 obtains that the weight of the SBS modifier in the discharge hopper 804 meets the feeding requirement, the control system of the modified asphalt production device automatically closes the fourth discharge butterfly valve 810 that was originally in an open state, and opens the second discharge butterfly valve 806 that was originally in a closed state. In this way, the SBS modifier in the discharge hopper 804 can be fed into the premix tank 1, so that the feeding amount of the SBS modifier can be accurately controlled, so that the performance of the modified asphalt can meet the product design requirements.

[0061] Optionally, in order to allow the SBS modifier in the discharge hopper 804 to be smoothly fed into the premixing tank 1 , a first stirring mechanism 29 may be provided in the discharge hopper 804 .

[0062] Optionally, in order to ensure that the matrix asphalt can be delivered to the premixing tank 1 in quantity, so that the ratio of the matrix asphalt and the SBS modifier in the premixing tank 1 meets the production requirements, the present invention can also be provided with a weight sensor to obtain the weight change of the material in the premixing tank 1. When the matrix asphalt in the premixing tank 1 meets the production requirements, the asphalt pump used to deliver the matrix asphalt stops working.

[0063] Optionally, the fine material outlet 502 of the vibrating screen 5 is connected to a first flexible discharge pipe 13; the feed hopper 802 is detachably provided with a first sealing cover plate 14, the first sealing cover plate 14 is connected to a feed pipe 15, and the feed pipe 15 is connected to the first flexible discharge pipe 13 (the material can be the same as the material of the bag filter bag). The fine material outlet of the vibrating screen 5 and the feed hopper 802 are connected by the first flexible discharge pipe 13, and the feed hopper 802 is closed by the first sealing cover plate 14, so as to avoid dust generation during the feeding process, and the setting of the pipeline will not interfere with the normal operation of the vibrating screen 5.

[0064] Optionally, a modifier collection box 807 is provided at the inner bottom of the elevator body 801, and the modifier collection box 807 is used to collect the SBS modifier spilled to the inner bottom of the elevator body 801. The modifier collection box 807 can be movably connected to the elevator body 801, and the modifier collection box 807 can be moved to the outside of the elevator body 801 by pulling, so that the production personnel can take out the SBS modifier in the modifier collection box 807.

[0065] In order to prevent materials from falling into the inner bottom of the elevator body 801 when the modifier collecting box 807 is moved to the outside of the elevator body 801, a baffle 808 is horizontally inserted into the elevator body 801 and is located above the modifier collecting box 807.

[0066] Optionally, the bottom of the modifier collection box 807 is conical, and the modified asphalt production device further includes a second vacuum suction machine 30. The second vacuum suction machine 30 is connected to the modifier collection box 807, and is used to pump the SBS modifier in the modifier collection box 807 to the crusher 3. In this optional embodiment, the closed hopper of the second vacuum suction machine 30 can also be set on the top of the housing 301 of the crusher 3, so that the SBS modifier in the modifier collection box 807 can be transported to the crusher 3 for crushing through the second vacuum suction machine 30, and there is no need to manually transport the collected SBS modifier, thereby reducing labor costs.

[0067] Optionally, the modified asphalt production device further includes a first asphalt delivery pipe 16, two colloid mills 17, a second asphalt delivery pipe 18 and an asphalt development tank 19. The first asphalt delivery pipe 16 is connected to the bottom of the premix tank 1, and the first asphalt delivery pipe 16 is connected to an asphalt pump. The two colloid mills 17 are arranged in parallel, and the input ends of the two colloid mills 17 can be connected to the first asphalt delivery pipe 16 through two branch pipelines 31, and the output ends of the two colloid mills 17 can be connected to the second asphalt delivery pipe 18 through two branch pipelines. The asphalt development tank 19 is connected to the second asphalt delivery pipe 18.

[0068] By setting two parallel colloid mills 17, when one of the colloid mills 17 is damaged and needs maintenance, the other colloid mill 17 can work normally, thereby ensuring that production can continue. It can be understood that valves are provided on the branch pipelines. When the valves on both sides of the input and output ends of the colloid mill 17 on any branch pipeline are opened, the modified base asphalt can be transported to the colloid mill 17, so that the selection of the colloid mill 17 can be realized. After the modified base asphalt is refined to the micron level by the colloid mill 17, the modified base asphalt is transported to the asphalt development tank 19 through the second asphalt delivery pipe 18, so that the base asphalt and the SBS modifier are fully integrated to form a stable and uniform mixture.

[0069] Optionally, the modified asphalt production device further includes a stabilizer addition tank 20 and a third asphalt delivery pipe 21. The stabilizer addition tank 20 is connected to the base asphalt storage tank 2 through a pipeline so that the base asphalt is delivered to the stabilizer addition tank 20 to be mixed with the stabilizer. The third asphalt delivery pipe 21 is connected to the stabilizer addition tank 20 and the asphalt development tank 19 respectively. When the base asphalt and the stabilizer are evenly mixed, the base asphalt mixed with the stabilizer is delivered to the asphalt development tank 19 through the third asphalt delivery pipe 21. A second stirring mechanism (not shown in the drawings) is provided in the asphalt development tank 19. The stabilizer is dispersed in the modified base asphalt by means of the second stirring mechanism, so that the dispersion state of the SBS modifier in the base asphalt can be stabilized, and the SBS modifier and the base asphalt can be effectively prevented from being separated.

[0070] The present invention first premixes the SBS modifier with the base asphalt, and then adds the base asphalt mixed with the stabilizer into the base asphalt mixed with the SBS modifier, so that before the stabilizer is added to the modified asphalt, the SBS modifier can be evenly dispersed in the base asphalt, so that the evenly dispersed SBS modifier can form a stable spatial network structure, and this network structure can wrap the base asphalt therein, thereby enhancing the stability and performance of the SBS modified asphalt.

[0071] In addition, the present invention first mixes the stabilizer with a small amount of base asphalt instead of directly putting the stabilizer into the development tank, thereby avoiding stabilizer agglomeration and allowing the stabilizer to be fully dispersed in the base asphalt mixed with the SBS modifier.

[0072] Optionally, the modified asphalt production device further includes a stabilizer storage tank 22 , a third weight sensor 23 , a third discharge pipe 24 , a third discharge butterfly valve 25 and a feeding hopper 26 .

[0073] The stabilizer storage tank 22 is arranged on the feeding platform 9. The third weight sensor 23 is arranged on the feeding platform 9, and its arrangement method can be the same as the first weight sensor 10, and is used to detect the weight of the stabilizer storage tank 22. The third discharge pipe 24 is connected to the bottom of the stabilizer storage tank 22, and the third discharge butterfly valve 25 is arranged on the third discharge pipe 24. The feeding hopper 26 is arranged on the top of the stabilizer adding tank 20, and the feeding hopper 26 is provided with a second sealing cover 27 connected to the third discharge pipe 24.

[0074] The third weight sensor 23 and the third discharge butterfly valve 25 are both electrically connected to the control system of the modified asphalt production device. The third weight sensor 23 can obtain the weight change of the stabilizer storage tank 22. When the weight change of the stabilizer storage tank 22 corresponds to the weight of the stabilizer that needs to be added to the stabilizer storage tank 22, the control system controls the third discharge butterfly valve 25 to close, thereby ensuring that the stabilizer can be put into the stabilizer storage tank 22 according to production requirements.

[0075] The provision of the second sealing cover 27 can prevent the asphalt fume in the stabilizer storage tank 22 from entering the outside of the tank, thereby improving the environment of the production workshop.

[0076] In order to allow the stabilizer in the feeding hopper 26 to be smoothly fed into the stabilizer adding tank 20 , a screw feeding mechanism 32 may be provided in the feeding hopper.

[0077] Of course, in order to control the weight of the base asphalt added to the stabilizer storage tank 22, the amount of base asphalt added can be controlled by detecting the weight change of the stabilizer storage tank 22 with the help of a metering pump or a weighing sensor.

[0078] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A modified asphalt production device, comprising a premixing tank and a base asphalt storage tank; the premixing tank is connected to the base asphalt storage tank; characterized in that: Also includes: A crusher, wherein the crusher is used to crush the SBS modifier; A modifier storage tank, wherein the modifier storage tank is mounted above the crusher and connected to the crusher, and the modifier storage tank stores SBS modifier; A vibrating screen, wherein the vibrating screen is mounted below the crusher, and the feed port of the vibrating screen is connected to the discharge port of the crusher, and the vibrating screen has a fine material outlet and at least one coarse material outlet; A coarse material collecting box, the coarse material collecting box is used to collect the SBS modifier discharged from the coarse material outlet; A first vacuum suction machine, which is connected to the coarse material collection box and is used to transport the SBS modifier in the coarse material collection box to the crusher; A bucket elevator is used to transport the SBS modifier discharged from the fine material outlet to a premixing tank.

2. The modified asphalt production device according to claim 1, characterized in that: The crusher comprises a casing, a crushing roller group arranged in parallel in the casing, and two material guide plates arranged below the crushing roller group and forming a V shape.

3. The modified asphalt production device according to claim 1, characterized in that: It also includes a feeding platform, a first weight sensor, a first discharge pipe and a first discharge butterfly valve; the modifier storage tank is mounted on the feeding platform; the first weight sensor is arranged on the feeding platform, and the first weight sensor is fixedly connected to the tank wall of the modifier storage tank; the first discharge pipe is connected to the crusher, and the first discharge butterfly valve is arranged on the first discharge pipe.

4. The modified asphalt production device according to claim 3, characterized in that: The bucket elevator includes an elevator body, a feed hopper arranged at the tail of the elevator body, a fourth discharge pipe arranged at the head of the elevator body, a discharge hopper mounted on the feeding platform, a second weight sensor arranged on the feeding platform and used to detect the discharge hopper, a second discharge pipe connected to the bottom of the discharge hopper, a second discharge butterfly valve on the second discharge pipe, and a fourth discharge butterfly valve arranged on the fourth discharge pipe; the second discharge pipe is connected to the top of the premixing tank.

5. The modified asphalt production device according to claim 4, characterized in that: The fine material outlet of the vibrating screen is connected with a first flexible discharge pipe; the feed hopper is detachably provided with a first sealing cover plate, the first sealing cover plate is connected with a feed pipe, and the feed pipe is connected with the first flexible discharge pipe.

6. The modified asphalt production device according to claim 3, characterized in that: Also includes: a first asphalt delivery pipe, wherein the first asphalt delivery pipe is connected to the bottom of the premixing tank; Two colloid mills, the two colloid mills are arranged in parallel, and the input ends of the colloid mills are both connected to the first asphalt delivery pipe; a second asphalt delivery pipe, wherein the second asphalt delivery pipe is connected to output ends of two colloid mills; An asphalt development tank is connected to the second asphalt delivery pipe.

7. The modified asphalt production device according to claim 4, characterized in that: The inner bottom of the elevator body is provided with a modifier collecting box, and a baffle is inserted into the elevator body horizontally and movably, and the baffle is located above the modifier collecting box.

8. The modified asphalt production device according to claim 7, characterized in that: The bottom of the modifier collecting box is conical, and the modified asphalt production device also includes: The second vacuum suction machine is connected to the modifier collection box and is used to pump the SBS modifier in the modifier collection box into the crusher.

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