Pretreatment device for high-dosage utilization of waste asphalt concrete

Abstract

The utility model belongs to the technical field of recycling of waste asphalt concrete, and particularly relates to a pretreatment device for high-dosage utilization of waste asphalt concrete, which comprises a waste asphalt concrete pretreatment device body, and a screening component is arranged in the waste asphalt concrete pretreatment device body. A transfer switch assembly is mounted at the top of the screening assembly, and a crushing assembly is arranged at the top of the transfer switch assembly; the screening assembly comprises a screening motor, the output end of the screening motor is fixedly connected with a half gear rotating shaft, the outer wall of the half gear rotating shaft is meshed with a gear meshing groove, and the side of the gear meshing groove is fixedly connected with a screen connecting rod; according to the waste asphalt concrete crushing and screening device, waste asphalt concrete can be crushed conveniently, the crushed waste asphalt concrete can be screened conveniently, particles meeting the requirement are separated out and put into use, and the purposes of saving resources and protecting the environment are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of recycling and reusing waste asphalt concrete, in particular to a pretreatment device for high-volume utilization of waste asphalt concrete. Background Art

[0002] Asphalt concrete is a mixture of mineral materials with a certain gradation, crushed stone or crushed gravel, stone chips or sand, mineral powder, etc., and a certain proportion of road asphalt materials, mixed under strictly controlled conditions.

[0003] In Chinese Patent 201922058910.6, the utility model relates to a pretreatment device for high-volume utilization of waste asphalt concrete, including a crushing chamber, a preheating chamber, and a transition pipe obliquely arranged between the crushing chamber and the preheating chamber, the height of the crushing chamber is greater than the height of the preheating chamber, a crushing mechanism is provided in the crushing chamber, a heating mechanism is provided in the preheating chamber, and an ash discharge mechanism is provided on the transition pipe. Compared with the prior art, the utility model can crush and preheat and dry waste asphalt concrete separately, so that the waste asphalt concrete is heated to a suitable temperature before mixing with new aggregates, and the moisture content is reduced, so that the dosage can be finally increased to more than 30%, meeting the requirements of high-volume utilization of waste asphalt concrete; the waste asphalt concrete ash in the material is discharged through the ash discharge mechanism, so as to avoid the waste asphalt concrete ash from melting and bonding into agglomerates in the preheating chamber due to excessively rapid temperature rise, causing blockage or reducing the quality of the recycled mixture, and has good reliability.

[0004] When recycling existing waste asphalt concrete, large pieces of waste asphalt concrete are difficult to put into use directly. At the same time, most of the existing pretreatment devices for waste asphalt concrete crush the waste asphalt concrete for direct use, but the sizes of the crushed asphalt concrete are different, which affects the mixed use of waste asphalt concrete and new asphalt.

[0005] Therefore, in order to solve the above problems, a pretreatment device for high-dosage utilization of waste asphalt concrete is proposed. Utility Model Content

[0006] In order to make up for the shortcomings of the existing technology, the problems of large particle size of waste asphalt concrete and difficulty in screening waste asphalt concrete are solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes a pretreatment device for high-content utilization of waste asphalt concrete, comprising a waste asphalt concrete pretreatment device body, a screening assembly is arranged inside the waste asphalt concrete pretreatment device body, a transfer switch assembly is installed on the top of the screening assembly, and a crushing assembly is arranged on the top of the transfer switch assembly; the screening assembly comprises a screening motor, the output end of the screening motor is fixedly connected with a half-gear rotating shaft, the outer wall of the half-gear rotating shaft is meshed with a gear meshing groove, and a screen connecting rod is fixedly connected to the side of the gear meshing groove, one end of the screen connecting rod is fixedly connected to the screen body, and the side of the screen body is fixedly connected to the screen fixing rod, one end of the screen fixing rod is elastically connected to a fixing rod spring, and the outer wall of the screen fixing rod is snap-connected with a fixing rod housing.

[0008] Preferably, the screen connecting rod forms a sliding structure with the body of the waste asphalt concrete pretreatment device through a gear meshing groove, and the gear meshing groove and the half gear rotating shaft are meshed with each other.

[0009] Preferably, the screen fixing rod forms an elastic structure with the fixing rod housing through a fixing rod spring, and four screen fixing rods are arranged at equal intervals with respect to the outer wall of the screen body.

[0010] Preferably, the transfer switch assembly comprises a transfer bevel, the bottom of which is tightly fitted with a switch baffle, a baffle operating handle is fixedly connected to the side of the switch baffle, and a baffle support rod is snap-connected to the bottom of the switch baffle.

[0011] Preferably, the switch baffle forms a sliding structure through the baffle operating handle and the transfer chute, and the switch baffle and the baffle support rod form a locking structure.

[0012] Preferably, the crushing assembly comprises a crushing motor, the output end of the crushing motor is fixedly connected to a motor gear, and the outer wall of the motor gear is meshed with a transmission gear, the side of the transmission gear is fixedly connected to a crushing drum, and a feed inclined plate is provided at the bottom of the crushing drum.

[0013] Preferably, the crushing drum forms a rotating structure through a transmission gear and a feed inclined plate, and the transmission gear and a motor gear are meshed with each other.

[0014] The utility model is beneficial in that:

[0015] 1. The screen connecting rod forms a sliding structure with the waste asphalt concrete pretreatment device body through the gear meshing groove, and the gear meshing groove and the half gear rotating shaft mesh with each other. The screen fixing rod forms an elastic structure with the fixing rod shell through the fixing rod spring, and four screen fixing rods are arranged at equal intervals on the outer wall of the screen body, which is convenient for screening the crushed waste asphalt concrete and separating the particles that meet the requirements for use, which is conducive to the mixing of waste asphalt concrete and new asphalt;

[0016] 2. The switch baffle forms a sliding structure through the baffle operating handle and the transfer chute, and the switch baffle and the baffle support rod form a snap-fit ​​structure, which is convenient for controlling the transfer of the waste asphalt concrete after crushing and for reasonably controlling the weight of the transfer;

[0017] 3. The crushing drum forms a rotating structure through the transmission gear and the feed inclined plate, and the transmission gear and the motor gear are meshed with each other, which is convenient for crushing the waste asphalt concrete to achieve a suitable particle size and facilitate the secondary use of the waste asphalt concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model as a whole viewed from the front;

[0020] Figure 2 This is a schematic diagram of the disassembly structure of the screening assembly of the utility model;

[0021] Figure 3 It is an enlarged structural schematic diagram of the screening assembly of the utility model;

[0022] Figure 4 This is a schematic diagram of the disassembly structure of the transfer switch assembly of the utility model;

[0023] Figure 5 It is an enlarged structural schematic diagram of the crushing component of the utility model.

[0024] In the figure: 1. waste asphalt concrete pretreatment device body; 2. screening assembly; 201. screening motor; 202. half gear shaft; 203. gear meshing groove; 204. screen connecting rod; 205. screen body; 206. screen fixing rod; 207. fixing rod spring; 208. fixing rod housing; 3. transfer switch assembly; 301. transfer chute; 302. switch baffle; 303. baffle operating handle; 304. baffle support rod; 4. crushing assembly; 401. crushing motor; 402. motor gear; 403. transmission gear; 404. crushing drum; 405. feed inclined plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1 As shown, a pretreatment device for high-dosage utilization of waste asphalt concrete includes a waste asphalt concrete pretreatment device body 1, a screening component 2 is arranged inside the waste asphalt concrete pretreatment device body 1, a transfer switch component 3 is installed on the top of the screening component 2, and a crushing component 4 is arranged on the top of the transfer switch component 3.

[0027] like Figure 2 , Figure 3As shown, a pretreatment device for high-content utilization of waste asphalt concrete, a screening component 2, including a screening motor 201, the output end of the screening motor 201 is fixedly connected to a half-gear shaft 202, and the outer wall of the half-gear shaft 202 is meshed with a gear meshing groove 203, and the side of the gear meshing groove 203 is fixedly connected to a screen connecting rod 204, one end of the screen connecting rod 204 is fixedly connected to a screen body 205, and the side of the screen body 205 is fixedly connected to a screen fixing rod 206, one end of the screen fixing rod 206 is elastically connected to a fixing rod spring 207, and the outer wall of the screen fixing rod 206 is snap-connected to a fixing rod housing 208, the screening motor 201 drives the half-gear shaft 202 to rotate, and the half-gear shaft 202 drives the gear meshing groove 203 and the screen The connecting rod 204 and the screen body 205 move back and forth, and the fixed rod spring 207 plays a buffering role. At this time, the screen body 205 screens the waste asphalt concrete inside and separates the particle size that meets the requirements. The screen connecting rod 204 forms a sliding structure with the waste asphalt concrete pretreatment device body 1 through the gear meshing groove 203, and the gear meshing groove 203 and the half gear shaft 202 are meshed with each other. The screen fixing rod 206 forms an elastic structure with the fixed rod shell 208 through the fixed rod spring 207, and four screen fixing rods 206 are arranged at equal intervals on the outer wall of the screen body 205, which is convenient for screening the crushed waste asphalt concrete and separating the particle size that meets the requirements for use, which is beneficial to the mixing of waste asphalt concrete and new asphalt.

[0028] like Figure 4 As shown, a pretreatment device for high-content utilization of waste asphalt concrete, a transfer switch assembly 3, including a transfer chute 301, a switch baffle 302 is tightly fitted at the bottom of the transfer chute 301, and a baffle operating handle 303 is fixedly connected to the side of the switch baffle 302, and a baffle support rod 304 is snap-connected at the bottom of the switch baffle 302. The crushed waste asphalt concrete reaches the transfer chute 301, and the baffle operating handle 303 is pulled horizontally. At this time, the switch baffle 302 slides on the baffle support rod 304, and the raw materials in the transfer chute 301 reach the position of the screen body 205. The switch baffle 302 forms a sliding structure with the transfer chute 301 through the baffle operating handle 303, and the switch baffle 302 and the baffle support rod 304 form a snap-fit ​​structure, which is convenient for controlling the transfer of the crushed waste asphalt concrete and for reasonably controlling the amount of transfer.

[0029] like Figure 5As shown, a pretreatment device for high-content utilization of waste asphalt concrete, a crushing component 4, including a crushing motor 401, an output end of the crushing motor 401 is fixedly connected to a motor gear 402, and the outer wall of the motor gear 402 is meshed with a transmission gear 403, the side of the transmission gear 403 is fixedly connected to a crushing drum 404, and a feeding ramp 405 is provided at the bottom of the crushing drum 404, and the waste asphalt concrete is poured into the feeding ramp 405. At this time, the crushing motor 401 drives the motor gear 402 to rotate, and the motor gear 402 drives the transmission gear 403 and the crushing drum 404 to rotate. The two crushing drums 404 rotating in opposite directions crush the waste asphalt concrete, and the crushing drum 404 forms a rotating structure with the feeding ramp 405 through the transmission gear 403, and the transmission gear 403 and the motor gear 402 are meshed with each other, so as to facilitate the crushing of the waste asphalt concrete to achieve a suitable particle size, which is convenient for the secondary use of the waste asphalt concrete.

[0030] Working principle: First, pour the waste asphalt concrete into the feed inclined plate 405. At this time, the crushing motor 401 drives the motor gear 402 to rotate, and the motor gear 402 drives the transmission gear 403 and the crushing drum 404 to rotate. The two crushing drums 404 rotating in opposite directions crush the waste asphalt concrete. Then, the crushed waste asphalt concrete reaches the transfer chute 301, and the baffle operating handle 303 is pulled horizontally. At this time, the switch baffle 302 slides on the baffle support rod 304, and the raw materials in the transfer chute 301 reach the position of the screen body 205. Then, the screening motor 201 drives the half-gear shaft 202 to rotate, and the half-gear shaft 202 drives the gear meshing groove 203, the screen connecting rod 204, and the screen body 205 to move back and forth, and the fixed rod spring 207 plays a buffering role. At this time, the screen body 205 screens the waste asphalt concrete inside to separate the particle size that meets the requirements.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A pretreatment device for high-volume utilization of waste asphalt concrete, characterized by: The invention comprises a waste asphalt concrete pretreatment device body (1), wherein a screening component (2) is arranged inside the waste asphalt concrete pretreatment device body (1), a transfer switch component (3) is installed on the top of the screening component (2), and a crushing component (4) is arranged on the top of the transfer switch component (3); The screening assembly (2) comprises a screening motor (201), the output end of the screening motor (201) being fixedly connected to a half-gear rotating shaft (202), the outer wall of the half-gear rotating shaft (202) being meshed with a gear meshing groove (203), and the side of the gear meshing groove (203) being fixedly connected to a screen connecting rod (204), one end of the screen connecting rod (204) being fixedly connected to a screen body (205), and the side of the screen body (205) being fixedly connected to a screen fixing rod (206), one end of the screen fixing rod (206) being elastically connected to a fixing rod spring (207), and the outer wall of the screen fixing rod (206) being snap-connected to a fixing rod housing (208).

2. A pretreatment device for high-volume utilization of waste asphalt concrete according to claim 1, characterized in that: The screen connecting rod (204) forms a sliding structure with the waste asphalt concrete pretreatment device body (1) via the gear meshing groove (203), and the gear meshing groove (203) and the half gear rotating shaft (202) are meshed with each other.

3. A pretreatment device for high-volume utilization of waste asphalt concrete according to claim 1, characterized in that: The screen fixing rod (206) forms an elastic structure through a fixing rod spring (207) and a fixing rod housing (208), and four screen fixing rods (206) are arranged at equal intervals about the outer wall of the screen body (205).

4. A pretreatment device for high-volume utilization of waste asphalt concrete according to claim 1, characterized in that: The transfer switch assembly (3) comprises a transfer chute (301), the bottom of the transfer chute (301) is tightly fitted with a switch baffle (302), the side of the switch baffle (302) is fixedly connected with a baffle operating handle (303), and the bottom of the switch baffle (302) is snap-connected with a baffle support rod (304).

5. A pretreatment device for high-volume utilization of waste asphalt concrete according to claim 4, characterized in that: The switch baffle (302) forms a sliding structure with the transfer chute (301) through the baffle operating handle (303), and the switch baffle (302) and the baffle support rod (304) form a locking structure.

6. The pretreatment device for high-volume utilization of waste asphalt concrete according to claim 1 is characterized by: The crushing assembly (4) comprises a crushing motor (401), the output end of the crushing motor (401) is fixedly connected to a motor gear (402), the outer wall of the motor gear (402) is meshed with a transmission gear (403), the side of the transmission gear (403) is fixedly connected to a crushing drum (404), and a feed inclined plate (405) is provided at the bottom of the crushing drum (404).

7. A pretreatment device for high-volume utilization of waste asphalt concrete according to claim 6, characterized in that: The crushing drum (404) forms a rotating structure with a transmission gear (403) and a feed inclined plate (405), and the transmission gear (403) and the motor gear (402) are meshed with each other.

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