Crushing and feeding system and crushing device

Abstract

The utility model relates to the technical field of modified asphalt preparation devices, in particular to a smashing and feeding system and a smashing device.The smashing and feeding system sequentially comprises the smashing device and a batching tank according to the moving direction of solid materials; the crushing device comprises a crusher and a cooling circulating device; the cooling circulating device comprises a spiral winding cooling pipeline and a circulating device, the spiral winding cooling pipeline is arranged on the outer wall of the pulverizer, the circulating device is connected with the spiral winding cooling pipeline, and the circulating device provides cooling water, so that the cooling water circularly flows in the spiral winding cooling pipeline; according to the method, the heat energy generated in the crushing process of the solid material is exchanged, the heat energy generated in the crushing process of the solid material is reduced, the solid material is prevented from aging and / or adhering to the crusher, then the speed of dissolving and mixing with the liquid material is increased, and the quality of a modified mixture obtained after dissolving and mixing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of modified asphalt preparation devices, in particular to a crushing and feeding system and a crushing device. Background Art

[0002] Styrene-butadiene-styrene block copolymer (SBS) is solid at room temperature. SBS modified asphalt is modified by adding a modifier mainly composed of SBS to asphalt, so that the performance of the modified asphalt mixture can be improved. The SBS addition method and swelling effect determine the output and quality of modified asphalt products. The processing technology of traditional SBS modified asphalt first sets the asphalt into the batching tank according to the process requirements, and then starts high-speed stirring and uses a colloid mill to grind, dissolve and develop after adding a certain amount of SBS at the mouth of the batching tank. This processing technology takes a long time for SBS to dissolve, which affects the progress of modified asphalt batching. Using the crushing device in the prior art to continue to crush SBS, although the subsequent addition and dissolution time will be shortened, SBS is prone to high temperature in the crushing device and the reverse crushing process in the prior art, causing SBS to age. At the same time, SBS itself has a high adhesiveness, which adheres to the inside of the crushing device, affecting the yield and the overall performance of the modified asphalt.

[0003] Based on the above-mentioned prior art, there are technical problems in the prior art that need to be solved urgently, such as long dissolution time when preparing modified asphalt with styrene-butadiene-styrene block copolymer and the SBS after crushing affecting the quality of the modified asphalt product. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a crushing and feeding system, which includes a crushing device and a batching tank in sequence according to the direction of the solid material;

[0005] The pulverizing device includes a pulverizer and a cooling circulation device, and the pulverizer is used to pulverize the solid materials put into it;

[0006] The temperature-reducing circulation device comprises a spirally wound cooling pipeline and a circulation device, wherein the spirally wound cooling pipeline is arranged on the outer wall of the pulverizer, and the circulation device is connected to the spirally wound cooling pipeline. The circulation device provides cooling water so that the cooling water circulates in the spirally wound cooling pipeline to exchange with the heat energy generated by the solid material during the pulverizing process, thereby reducing the heat energy generated by the solid material during the pulverizing process and preventing the solid material from aging and / or sticking to the pulverizer.

[0007] Furthermore, the crusher includes a crusher housing, a rotating shaft and a crushing knife, the rotating shaft and the crushing knife are arranged inside the crusher housing, and the crushing knife is arranged on the rotating shaft; after starting the crusher, the rotating shaft drives the crushing knife to rotate, impact and shear the solid material to crush the solid material.

[0008] Furthermore, the crushing blade is detachably arranged on the rotating shaft, so that the crushing blade can be replaced or repaired at any time, thereby improving the maintainability and convenience of use of the crusher.

[0009] Furthermore, the circulation device includes a water tank, a water pump, and a filter; the cooling water in the water tank is pumped out by the water pump and sent to the filter for filtration, and then enters the spirally wound cooling pipeline to cool the grinder and the solid material in the grinder.

[0010] Furthermore, a vibrating screen and a conveying device are also provided between the pulverizing device and the batching tank;

[0011] The pulverizer is connected to the vibrating screen, and the vibrating screen is connected to the conveying device.

[0012] Furthermore, a first feeding port is provided above the pulverizer, and a first discharging port is provided below the pulverizer. The solid material is fed into the pulverizer through the first feeding port for pulverization to obtain pulverized material. The pulverized material enters the vibrating screen through the first discharging port, and enters the conveying device after being screened by the vibrating screen. The conveying device conveys the screened pulverized material to the batching tank.

[0013] Furthermore, a silo device is included between the vibrating screen and the conveying device, the silo device includes a storage silo and a weight loss weighing silo, the storage silo is connected to the vibrating screen, the weight loss weighing silo is connected to the conveying device, and a valve is provided between the storage silo and the weight loss weighing silo;

[0014] The crushed material passing through the vibrating screen is first collected into the storage bin, which is provided with a first display meter to display the mass of the crushed material contained in the storage bin; the valve is opened, and the crushed material in the storage bin enters the weight-loss weighing bin from the storage bin, and the weight-loss weighing bin is provided with a second display meter. The mass of the crushed material in the weight-loss weighing bin displayed by the second display meter is used to control the mass of the crushed material transported to the batching tank at one time, so as to complete a batch of crushed material and the mixing with the liquid material in the batching tank.

[0015] Furthermore, the valve is one of a butterfly valve, a gate valve and a ball valve.

[0016] Furthermore, the conveying device includes a conveying trough, a spiral blade, and a driving device; the spiral blade is used to prevent the crushed material from being blocked during the conveying process;

[0017] When the crushed material is transported from the weight loss weighing bin to the conveying device, the driving device drives the spiral blade in the conveying trough to rotate, so as to transport the crushed material to the batching tank;

[0018] The discharge port of the conveying device is located below the liquid material in the batching tank to ensure that the conveyed crushed material all enters the batching tank and is fully mixed and dissolved with the liquid material in the batching tank.

[0019] Furthermore, the batching tank includes a second feeding port, a stirring device, and a heating device;

[0020] The second feeding port is used to feed liquid material. The heating device heats the liquid material while the stirring device stirs the liquid material. When the crushed material is transported to the batching tank through the conveying device, the batching tank completes the dissolution and mixing of the solid material and the liquid material to obtain a modified mixed material.

[0021] Furthermore, the solid material is styrene-butadiene-styrene block copolymer (SBS), the liquid material is asphalt, and the modified mixture is modified asphalt.

[0022] The present invention also provides a pulverizing device, which is the pulverizing device in the above-mentioned pulverizing and feeding system.

[0023] The beneficial effects of the utility model are:

[0024] The utility model provides a pulverizing and feeding system and a pulverizing device. The pulverizing and feeding system comprises a pulverizing device and a batching tank in sequence according to the direction of solid materials. The pulverizing device comprises a pulverizer and a cooling circulation device, and the pulverizer is used to pulverize the solid materials put therein. The cooling circulation device comprises a spirally wound cooling pipeline and a circulation device, and the spirally wound cooling pipeline is arranged on the outer wall of the pulverizer. The circulation device is connected with the spirally wound cooling pipeline. The circulation device provides cooling water so that the cooling water circulates in the spirally wound cooling pipeline to exchange with the heat energy generated by the solid materials in the pulverizing process, reduce the heat energy generated by the solid materials in the pulverizing process, prevent the solid materials from aging and / or adhering to the pulverizer, and then improve the speed of dissolving and mixing with the liquid materials and improve the quality of the modified mixed material obtained after dissolving and mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the pulverizing and feeding system of the utility model;

[0027] The numbers in the figure are:

[0028] 1. Batching tank; 11. Second feeding port; 12. Stirring device; 2. Crusher; 21. Crusher housing; 22. Rotating shaft; 23. Crushing knife; 24. First feeding port; 25. First discharging port; 3. Spiral winding cooling pipeline; 4. Circulation device; 41. Water tank; 42. Water pump; 43. Filter; 5. Vibrating screen; 6. Conveying device; 61. Conveying trough; 62. Spiral blades; 63. Driving device; 64. Discharging port; 7. Silo device; 71. Storage silo; 72. Weight-reducing silo; 73. Valve. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0030] It should be noted that the term "comprising" in the specification and claims of this application and the above-mentioned drawings is intended to cover non-exclusive inclusions. In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated components to have specific orientations. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] like Figure 1 As shown, this embodiment provides a crushing and feeding system, which includes a crushing device and a batching tank 1 in sequence according to the direction of the solid material;

[0033] The pulverizing device includes a pulverizer 2 and a cooling circulation device, and the pulverizer 2 is used to pulverize the solid materials put into it;

[0034] The temperature reduction circulation device includes a spirally wound cooling pipeline 3 and a circulation device 4. The spirally wound cooling pipeline 3 is arranged on the outer wall of the pulverizer 2. The circulation device 4 is connected to the spirally wound cooling pipeline 3. The circulation device provides cooling water so that the cooling water circulates in the spirally wound cooling pipeline 3. In this embodiment, the pulverizer 2 contains a temperature sensor. When the temperature sensor senses that the temperature in the pulverizer 2 is higher than the set temperature, the control motor connected to the circulation device 4 drives the circulation device 4 to operate; so as to exchange the heat energy generated by the solid material during the pulverization process, reduce the heat energy generated by the solid material during the pulverization process, and prevent the solid material from aging and / or sticking to the pulverizer 2.

[0035] The pulverizer 2 includes a pulverizer housing 21, a rotating shaft 22 and a pulverizing blade 23. The rotating shaft 22 and the pulverizing blade 23 are arranged inside the pulverizer housing 21, and the pulverizing blade 23 is arranged on the rotating shaft 22. After the pulverizer 2 is started, the rotating shaft 22 drives the pulverizing blade 23 to rotate, impact and shear the solid material, so as to pulverize the solid material.

[0036] In this embodiment, the crushing blade 23 is detachably disposed on the rotating shaft 22 so that the crushing blade 23 can be replaced or repaired at any time, thereby improving the maintainability and convenience of use of the crusher 2.

[0037] The circulation device 4 includes a water tank 41, a water pump 42, and a filter 43; the cooling water in the water tank 41 is pumped out by the water pump 42 and sent to the filter 43 for filtration, and then enters the spirally wound cooling pipeline 3 to cool the pulverizer 2 and the solid material in the pulverizer 2.

[0038] In this embodiment, a vibrating screen 5 and a conveying device 6 are further included between the pulverizing device and the batching tank 2;

[0039] The pulverizer 2 is connected to the vibrating screen 5, and the vibrating screen 5 is connected to the conveying device 6;

[0040] The vibrating screen 5 contains a detachable screen, and the mesh size of the screen can be changed according to specific requirements to better screen the crushed material.

[0041] In this embodiment, a first feeding port 24 is provided above the pulverizer 2, and a first discharging port 25 is provided below the pulverizer 2. The solid material is fed into the pulverizer 2 through the first feeding port 24 for pulverization to obtain pulverized material. The pulverized material enters the vibrating screen 5 through the first discharging port 25, and enters the conveying device 6 after being screened by the vibrating screen 5. The conveying device 6 conveys the screened pulverized material to the batching tank 2.

[0042] In this embodiment, a silo device 7 is included between the vibrating screen 5 and the conveying device 6, and the silo device 7 includes a storage bin 71 and a weight-reducing weighing bin 72. The storage bin 71 is connected to the vibrating screen 5, and the weight-reducing weighing bin 72 is connected to the conveying device 6. A valve 73 is provided between the storage bin 71 and the weight-reducing weighing bin 72.

[0043] The crushed material passing through the vibrating screen 5 is first collected into the storage bin 71, and a first display meter is provided in the storage bin 71 to display the mass of the crushed material contained in the storage bin 71; the valve 73 is opened, and the crushed material in the storage bin 71 enters the weight-reducing weighing bin 72 from the storage bin 71, and a second display meter is provided in the weight-reducing weighing bin 72. The mass of the crushed material in the weight-reducing weighing bin 72 is displayed by the second display meter to control the mass of the crushed material transported to the batching tank 2 at one time, so as to complete a batch of crushed material and the mixing with the liquid material in the batching tank 2. Specifically, the weight loss scale silo 72 is provided with upper and lower limit sensors. When the reading displayed by the second display meter is equal to the lower limit, the valve 73 is opened, and the crushed material in the storage bin 71 enters the weight loss scale silo 72. When the reading displayed by the second display meter is equal to the upper limit, the valve 73 is closed, and the crushed material in the weight loss scale silo 72 enters the conveying device 6 for transportation.

[0044] In this embodiment, the valve 73 is an electric butterfly valve. In some embodiments, the valve 73 includes but is not limited to a gate valve or a ball valve, and mainly plays the role of controlling opening or closing, and is not specifically limited here.

[0045] In this embodiment, the conveying device 6 includes a conveying trough 61, a spiral blade 62, and a driving device 63; the spiral blade 62 prevents the crushed material from being blocked during the conveying process;

[0046] When the crushed material is transported from the weight loss weighing bin 72 to the conveying device 6, the driving device 63 drives the spiral blade 62 in the conveying trough 61 to rotate, and the crushed material is transported to the batching tank 2;

[0047] The discharge port 64 of the conveying device 6 is located below the liquid material in the batching tank 2 to ensure that the conveyed crushed material all enters the batching tank 2 and is fully mixed and dissolved with the liquid material in the batching tank 2 .

[0048] Specifically, Figure 1 As shown, in this embodiment, the conveying device 6 is divided into a horizontal conveying device and a vertical conveying device, which further reduces the possibility of blockage of the crushed material during transportation.

[0049] In this embodiment, the batching tank 1 includes a second feeding port 11, a stirring device 12, and a heating device;

[0050] The second feeding port 11 is used to feed liquid material. The heating device heats the liquid material while the stirring device 12 stirs the liquid material. When the crushed material is transported to the batching tank 2 through the conveying device 6, the batching tank 2 completes the dissolution and mixing of the solid material and the liquid material to obtain a modified mixture.

[0051] In this embodiment, the solid material is styrene-butadiene-styrene block copolymer (SBS), the liquid material is asphalt, and the modified mixture is modified asphalt. The crushing and feeding system and crushing device reduce the dissolution time of styrene-butadiene-styrene block copolymer in the prior art when preparing modified asphalt, and improve the product quality of the modified asphalt, and are suitable for promotion and use.

[0052] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A crushing and feeding system, characterized in that: According to the direction of the solid material, it includes a crushing device and a batching tank (1); The pulverizing device comprises a pulverizer (2) and a cooling circulation device, wherein the pulverizer (2) is used to pulverize solid materials placed therein; The temperature reduction circulation device comprises a spirally wound cooling pipeline (3) and a circulation device (4); the spirally wound cooling pipeline (3) is arranged on the outer wall of the pulverizer (2); the circulation device (4) is connected to the spirally wound cooling pipeline (3); the circulation device (4) provides cooling water so that the cooling water circulates in the spirally wound cooling pipeline (3) to exchange with the heat energy generated by the solid material during the pulverization process, thereby reducing the heat energy generated by the solid material during the pulverization process.

2. The crushing and feeding system according to claim 1, characterized in that: The pulverizer (2) comprises a pulverizer housing (21), a rotating shaft (22) and a pulverizing blade (23); the rotating shaft (22) and the pulverizing blade (23) are arranged inside the pulverizer housing (21); and the pulverizing blade (23) is arranged on the rotating shaft (22).

3. The crushing and feeding system according to claim 2, characterized in that: The crushing knife (23) is detachably arranged on the rotating shaft (22).

4. The crushing and feeding system according to claim 1, characterized in that: The circulation device (4) comprises a water tank (41), a water pump (42), and a filter (43); the cooling water in the water tank (41) is pumped out by the water pump (42) and sent to the filter (43) for filtration, and then enters the spirally wound cooling pipeline (3) to cool the pulverizer (2) and the solid material in the pulverizer (2).

5. The crushing and feeding system according to claim 1, characterized in that: A vibrating screen (5) and a conveying device (6) are also provided between the pulverizing device and the batching tank (1); The pulverizer (2) is connected to the vibrating screen (5), and the vibrating screen (5) is connected to the conveying device (6).

6. The crushing and feeding system according to claim 5, characterized in that: A silo device (7) is provided between the vibrating screen (5) and the conveying device (6), and the silo device (7) includes a storage bin (71) and a weight-loss weighing bin (72). The storage bin (71) is connected to the vibrating screen (5), and the weight-loss weighing bin (72) is connected to the conveying device (6). A valve (73) is provided between the storage bin (71) and the weight-loss weighing bin (72).

7. The crushing and feeding system according to claim 6, characterized in that: The valve (73) is one of a butterfly valve, a gate valve and a ball valve.

8. The crushing and feeding system according to claim 6, characterized in that: The conveying device (6) comprises a conveying trough (61), a spiral blade (62), and a driving device (63); When the crushed material is conveyed from the weight-reducing weighing bin (72) to the conveying device (6), the driving device (63) drives the spiral blade (62) in the conveying trough (61) to rotate, thereby conveying the crushed material to the batching tank (1).

9. The crushing and feeding system according to claim 1, characterized in that: The batching tank (1) comprises a second feeding port (11), a stirring device (12), and a heating device; The second feeding port (11) is used to feed liquid material, and the heating device heats the liquid material while the stirring device (12) stirs the liquid material.

10. A comminution device, characterized in that: The pulverizing device is the pulverizing device in the pulverizing and feeding system according to any one of claims 1 to 9.

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