CN220836623U

CN220836623U - Asphalt screening device

Info

Publication number: CN220836623U
Application number: CN202322644080.1U
Authority: CN
Inventors: 季磊; 王永忠; 孙焕真; 宋承志
Original assignee: Penglai Tongda Highway Comprehensive Service Office
Current assignee: Penglai Tongda Highway Comprehensive Service Office
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-04-26
Anticipated expiration: 2033-09-28

Abstract

The utility model provides an asphalt screening device, which comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a bottom cabinet, the top of the bottom cabinet is fixedly connected with a screening box, the left side and the right side of the screening box are provided with grooves, the left side and the right side of the inside of the screening box are provided with supporting plates, the bottoms of the opposite sides of the supporting plates are provided with sliding grooves II, a screening cabinet is arranged between the supporting plates, the bottom end of the inside of the screening cabinet is fixedly connected with a screen mesh, the bottoms of the left side and the right side of the screening cabinet are fixedly connected with sliding rods II, the center of the top of the supporting plate, which is far away from one side of the screening cabinet, of the supporting plate is fixedly connected with a hit plate, the bottom of the front end of the supporting plate is provided with a clamping mechanism, and the vibration adjusting mechanisms are symmetrically arranged at the left side and the right side of the bottom cabinet.

Description

Asphalt screening device

Technical Field

The utility model mainly relates to the technical field of asphalt screening devices, in particular to an asphalt screening device.

Background

The asphalt mixture thermal regeneration technology is a whole set of process technology for forming a regenerated mixture with certain road performance by digging or milling, crushing and screening old pavement materials, drying, heating and melting the old pavement materials by special equipment, and re-mixing the old pavement materials with materials such as new aggregate, new asphalt and the like in a certain proportion. In order to obtain a high quality reclaimed asphalt mixture, sieving would be one of the requisite processes for reclaimed material pretreatment.

Through searching, for example, the utility model patent with the publication number of CN215198195U discloses a regenerated asphalt concrete crushed aggregates screening device, which comprises a device body, wherein the device body comprises a base, two sides of the top end of the base are fixedly provided with supporting frames, the top ends of two supporting frames are fixedly provided with top plates, the top ends of the top plates are fixedly provided with feeding inlets, the bottom ends of the top plates are fixedly provided with a group of extension springs, and the number of each group of extension springs is two; this patent is through being provided with support frame, roof, feed inlet, extension spring, screening case, fixed plate, handle and receipts workbin for during the use, add the inside of screening case with the raw materials, through holding the handle vertical pulling, the screening case reciprocates this moment, and drives extension spring compression and reset, the raw materials rocks about screening incasement, and then lets the raw materials pass the filter screen and falls into and receive the workbin and collect, and operating means is simple convenient, has promoted the practicality of device.

In the above-mentioned patent technical scheme, through holding the handle and pulling from top to bottom, the screening case reciprocates this moment to drive extension spring compression and reset, the raw materials rocks about screening incasement, and then lets the raw materials pass the filter screen and falls into and receive the workbin and collect, and operating means is simple convenient, has promoted the practicality of device. However, the following disadvantages still exist when the technical scheme of the patent is used:

1. According to the technical scheme, the screening box moves up and down at the moment by holding the handle and pulling up and down, and when raw materials are screened, the screening box needs to be pulled manually, so that the manual screening efficiency is low, the manpower consumption is high, and the labor cost is increased;

2. In the above-mentioned patent technical scheme, be inconvenient for to filtering out unqualified raw materials and clear up, simultaneously, above-mentioned patent technical scheme can not install and dismantle the filter screen fast, when needing to change different aperture filter screens, the filter screen in the above-mentioned patent technical scheme is inconvenient to change, leads to the device practicality to descend;

we therefore provide an asphalt screening apparatus that addresses the deficiencies in the above solutions.

Disclosure of utility model

The utility model mainly provides an asphalt screening device which is used for solving the technical problems in the background technology.

The technical scheme adopted for solving the technical problems is as follows:

The utility model provides an asphalt screening plant, includes the bottom plate, bottom plate top fixedly connected with end cabinet, end cabinet top fixedly connected with screening case, the fluting has all been seted up to screening case left and right sides, screening incasement portion left and right sides all is equipped with the backup pad, spout two has all been seted up to the relative one side bottom of backup pad, be equipped with the screening cabinet between the backup pad, the inside bottom fixedly connected with screen cloth of screening cabinet, the equal fixedly connected with slide bar two in screening cabinet left and right sides bottom, the top center department fixedly connected with of screening cabinet one side is kept away from to the backup pad is received the board, backup pad front end bottom just is located spout two and is kept away from one side of screening cabinet and be equipped with joint mechanism, bottom plate top just is located end cabinet left and right sides symmetry and is equipped with vibration adjustment mechanism.

Further, joint mechanism includes the joint board of fixed connection in backup pad front end bottom, the inside one side fixedly connected with fixed riser that keeps away from spout two of joint board, spacing spout has all been seted up to the both sides inner wall about the joint board, the inside fly leaf that is equipped with of joint board, the equal fixedly connected with spacing slider of both sides about the fly leaf, one side fixedly connected with limiting plate that the fly leaf is close to spout two, one side fixedly connected with pull rod that limiting plate was kept away from to the fly leaf, fixed riser and fixedly connected with hand piece are run through to the one end that limiting plate was kept away from to the pull rod, one side that limiting plate was kept away from to the fly leaf just is located the equal fixedly connected with reset spring two of both sides about the pull rod, reset spring one end and fixed riser side fixedly connected with that the fly leaf was kept away from to the fly leaf.

Further, vibrations adjustment mechanism includes the mount pad of fixed connection in bottom plate top, both sides all fixedly connected with spacing round bar around the mount pad top, spacing round bar top fixedly connected with roof, be equipped with movable seat between the spacing round bar, the inside accommodate spindle that is equipped with of movable seat, accommodate spindle top runs through roof and fixedly connected with hand carousel, one side fixedly connected with that movable seat is close to the base cabinet supports the diaphragm, support diaphragm top fixedly connected with drive drum, drive drum rear end fixedly connected with driving motor, drive drum top fixedly connected with spacing drum, the inside sliding connection of spacing drum has the piston rod, piston rod bottom fixedly connected with engaging lug, the inside disc that is equipped with of drive drum, disc front end fixedly connected with bull stick, be equipped with the connecting rod between bull stick and the engaging lug.

Further, the screening cabinet is connected with the sliding groove II which is formed in the bottom of the side opposite to the supporting plate through the sliding rod II which is arranged at the bottom of the left side and the bottom of the right side, the front side of the sliding rod II is attached to the rear side of the limiting plate, the movable plate is connected with the limiting sliding groove which is formed in the inner wall of the upper side and the lower side of the clamping plate through the limiting sliding blocks which are arranged at the upper side and the lower side, the sliding rod is connected with the penetrating part of the fixed vertical plate in a sliding mode, and the damper is arranged in the second reset spring.

Further, disc rear side and driving motor output fixed connection, connecting rod one end is rotated with the bull stick and is connected, the connecting rod other end is rotated with the engaging lug and is connected, movable seat and adjusting screw threaded connection, movable seat cover establish in the spacing round bar outside and with spacing round bar sliding connection, just adjusting screw runs through department with the roof and rotates to be connected, it runs through fluting and extends screening case outside to receive the board, receive board and fluting sliding connection, the piston rod top is laminated mutually with receiving the board bottom.

Further, horizontal fluting has been seted up to the end cabinet front end, spout one has all been seted up to horizontal fluting left and right sides inner wall, the inside collection steamer tray that is equipped with of horizontal fluting, collection steamer tray front end fixedly connected with baffle, the equal fixedly connected with hand pull rod in baffle front end left and right sides, the equal fixedly connected with slide bar one of collection steamer tray left and right sides.

Further, the baffle rear end is laminated mutually with the end cabinet front end, the slide groove one sliding connection that the slide bar one that sets up through the left and right sides and horizontal fluting left and right sides inner wall were seted up to the collection steamer tray, just horizontal fluting top and screening incasement portion intercommunication.

Further, the screening case front end is connected with the cabinet door through the hinge rotation, screening case top fixedly connected with feeder hopper, both sides are all fixedly connected with reset spring one around the backup pad top.

Further, the top of the first reset spring is fixedly connected with the top end of the inside of the screening box, and a damper is arranged in the first reset spring.

Compared with the prior art, the utility model has the beneficial effects that:

1. According to the utility model, through the vibration adjusting mechanism, the height of the movable seat can be adjusted by rotating the hand turntable, so that the distance between the piston rod and the impacted plate is changed, the vibration force is adjusted, a processor can adjust according to the crushing condition of raw materials, the raw material screening effect is prevented from being reduced due to too small vibration, meanwhile, the disc is driven by the driving motor to rotate, the disc can drive the rotating rod to rotate, the piston rod is pulled to make a piston motion in the limiting cylinder under the action of the connecting rod, the impacted plate is impacted, the raw materials are subjected to vibration screening, and the screening cabinet is reset under the action of the reset spring I, so that the screening cabinet moves up and down, the screening efficiency is improved, the manpower consumption is reduced, and the labor cost is reduced.

2. According to the utility model, through the clamping mechanism, the screening cabinet screens raw materials through the screen mesh arranged inside, unqualified raw materials are retained inside the screening cabinet, qualified raw materials fall into the collecting drawer to be collected, after raw material screening is finished, a processor can open the cabinet door and then pull the hand-pulled block to enable the limiting plate to move, and the limitation on the second slide rod is removed, so that the processor can take out the screening cabinet together with the unqualified raw materials screened inside for cleaning, meanwhile, the processor can select the screening cabinet with the screen mesh with the corresponding caliber according to the crushing degree of the raw materials, then pull the hand-pulled block to enable the limiting plate to enter the inside of the clamping plate, then the second slide rod arranged through the screening cabinet is inserted into the second slide groove to finish the installation of the screening cabinet, and after the screening cabinet is inserted between the supporting plates, the hand-pulled block is loosened, the limiting plate is reset under the action of the second return spring, the second slide rod is limited, and the screening cabinet is prevented from sliding out when the screening device is used, the filter screen can be rapidly installed and detached, and the practicability of the filter screen can be improved when the filter screen is required to be replaced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a vibration adjusting mechanism according to the present utility model;

FIG. 3 is a schematic view of the internal front view of the drive cylinder of the present utility model;

FIG. 4 is a schematic drawing showing the drawer extraction structure of the present utility model;

FIG. 5 is a schematic diagram of the overall internal front view of the present utility model;

FIG. 6 is a schematic diagram of the structure of the screening cabinet of the present utility model;

fig. 7 is an enlarged view of region a in fig. 6.

In the figure: 1. a bottom plate; 101. a bottom cabinet; 102. transverse slotting; 103. a first chute; 104. a collection drawer; 105. a first slide bar; 106. a baffle; 107. a hand pull rod; 2. a screening box; 201. slotting; 202. a feed hopper; 203. a cabinet door; 204. a first reset spring; 205. a support plate; 206. a hit plate; 207. a second chute; 208. a screening cabinet; 209. a screen; 210. a second slide bar; 3. a vibration adjusting mechanism; 301. a mounting base; 302. a limit round rod; 303. a top plate; 304. a movable seat; 305. a supporting cross plate; 306. a hand turntable; 307. adjusting a screw rod; 308. a drive cylinder; 309. a driving motor; 310. a limit cylinder; 311. a disc; 312. a rotating rod; 313. a connecting rod; 314. a piston rod; 315. a connecting lug; 4. a clamping mechanism; 401. a clamping plate; 402. fixing a vertical plate; 403. limiting sliding grooves; 404. a movable plate; 405. a limiting plate; 406. a limit sliding block; 407. a pull rod; 408. a hand pulling block; 409. and a second reset spring.

Detailed Description

In order that the utility model may be more fully understood, a more particular description of the utility model will be rendered by reference to the appended drawings, in which several embodiments of the utility model are illustrated, but which may be embodied in different forms and are not limited to the embodiments described herein, which are, on the contrary, provided to provide a more thorough and complete disclosure of the utility model.

Referring to fig. 1-7, an asphalt screening device includes a bottom plate 1, a bottom cabinet 101 fixedly connected to the top of the bottom plate 1, a screening box 2 fixedly connected to the top of the bottom cabinet 101, slots 201 formed in the left and right sides of the screening box 2, a supporting plate 205 disposed on the left and right sides of the screening box 2, a second chute 207 formed in the bottom of the opposite side of the supporting plate 205, a screening cabinet 208 disposed between the supporting plates 205, a screen 209 fixedly connected to the bottom of the screening cabinet 208, a second slide bar 210 fixedly connected to the bottom of the left and right sides of the screening cabinet 208, a hit plate 206 fixedly connected to the top center of the side of the supporting plate 205, a clamping mechanism 4 disposed on the side of the bottom of the front end of the supporting plate 205, and a vibration adjusting mechanism 3 disposed on the left and right sides of the bottom cabinet 101.

Wherein the clamping mechanism 4 comprises a clamping plate 401 fixedly connected to the bottom of the front end of the supporting plate 205, one side, far away from the second sliding groove 207, of the clamping plate 401 is fixedly connected with a fixed vertical plate 402, limiting sliding grooves 403 are formed in the inner walls of the upper side and the lower side of the clamping plate 401, a movable plate 404 is arranged in the clamping plate 401, limiting sliding blocks 406 are fixedly connected to the upper side and the lower side of the movable plate 404, one side, close to the second sliding groove 207, of the movable plate 404 is fixedly connected with a limiting plate 405, one side, far away from the limiting plate 405, of the movable plate 404 is fixedly connected with a pull rod 407, one end, far away from the movable plate 404, of the pull rod 407 penetrates through the fixed vertical plate 402 and is fixedly connected with a hand pulling block 408, one side, far away from the limiting plate 405, of the movable plate 404 is fixedly connected with a second reset spring 409, which is far away from the movable plate 404, of one end is fixedly connected with the side of the fixed vertical plate 402, the screening cabinet 208 is in sliding connection with the second sliding chute 207 arranged at the bottom of the opposite side of the supporting plate 205 through the second sliding rod 210 arranged at the bottom of the left side and the right side, the front side of the second sliding rod 210 is attached to the rear side of the limiting plate 405, the movable plate 404 is in sliding connection with the limiting sliding chute 403 arranged on the inner walls of the upper side and the lower side of the clamping plate 401 through the limiting sliding blocks 406 arranged at the upper side and the lower side, the pull rod 407 is in sliding connection with the penetrating part of the fixed vertical plate 402, a damper is arranged in the second reset spring 409, a processing personnel can select the screening cabinet 208 with the corresponding caliber screen 209 according to the crushing degree of raw materials, then pull the hand pulling block 408 to enable the limiting plate 405 to enter the clamping plate 401, the second sliding rod 210 is inserted into the second sliding chute 207 through the second sliding rod 210 arranged in the screening cabinet 208, the installation of the screening cabinet 208 is completed, after the screening cabinet 208 is inserted between the supporting plates 205, the hand pulling block 408 is released, the limiting plate 405 is reset under the action of the second reset spring 409, the limiting plate 210 is realized, screening cabinet 208 roll-off when preventing to sieve for when this pitch screening plant uses, can install fast and dismantle the filter screen, when needing to change different aperture filter screens, can be convenient for change the filter screen, improve device practicality.

Wherein the vibration adjusting mechanism 3 comprises a mounting seat 301 fixedly connected to the top of the bottom plate 1, limiting round rods 302 are fixedly connected to the front side and the rear side of the top of the mounting seat 301, a top plate 303 is fixedly connected to the top of the limiting round rods 302, movable seats 304 are arranged between the limiting round rods 302, adjusting screw rods 307 are arranged inside the movable seats 304, the top ends of the adjusting screw rods 307 penetrate through the top plate 303 and are fixedly connected with a hand turntable 306, one side of the movable seats 304 close to the bottom cabinet 101 is fixedly connected with a supporting transverse plate 305, the top of the supporting transverse plate 305 is fixedly connected with a driving cylinder 308, the rear end of the driving cylinder 308 is fixedly connected with a driving motor 309, the top of the driving cylinder 308 is fixedly connected with a limiting cylinder 310, a piston rod 314 is slidingly connected to the inside of the limiting cylinder 310, connecting lugs 315 are fixedly connected to the bottom of the piston rod 314, discs 311 are arranged inside the driving cylinder 308, the front ends of the discs 311 are fixedly connected with rotating rods 312, a connecting rod 313 is arranged between the rotary rod 312 and the connecting lug 315, the rear side of the disc 311 is fixedly connected with the output end of the driving motor 309, one end of the connecting rod 313 is rotationally connected with the rotary rod 312, the other end of the connecting rod 313 is rotationally connected with the connecting lug 315, the movable seat 304 is in threaded connection with the adjusting screw rod 307, the movable seat 304 is sleeved outside the limit round rod 302 and is slidingly connected with the limit round rod 302, the adjusting screw rod 307 is rotationally connected with the penetrating part of the top plate 303, the impacted plate 206 penetrates through the slot 201 and extends out of the screening box 2, the impacted plate 206 is slidingly connected with the slot 201, the top of the piston rod 314 is attached to the bottom of the impacted plate 206, the height of the movable seat 304 can be adjusted by rotating the hand turntable 306, so that the distance between the piston rod 314 and the impacted plate 206 can be changed, the vibration force can be adjusted, a processor can adjust according to the crushing condition of raw materials, the raw material screening effect can be prevented from being reduced due to the too small vibration, meanwhile, the disc 311 is driven to rotate by starting the driving motor 309, so that the disc 311 drives the rotating rod 312 to rotate, the piston rod 314 is pulled to perform piston movement in the limiting cylinder 310 under the action of the connecting rod 313, so that the hit plate 206 is hit, the raw materials are subjected to vibration screening, the screening cabinet 208 is reset under the action of the first reset spring 204, and the up-and-down movement of the screening cabinet 208 is realized, so that when the asphalt screening device is used, screening is not required by manpower, the screening efficiency is improved, the manpower consumption is reduced, and the labor cost is reduced.

Wherein, horizontal fluting 102 has been seted up to the end of cabinet 101, spout one 103 has all been seted up to horizontal fluting 102 left and right sides inner wall, the inside collection steamer tray 104 that is equipped with of horizontal fluting 102, collection steamer tray 104 front end fixedly connected with baffle 106, baffle 106 front end left and right sides all fixedly connected with hand pull rod 107, collection steamer tray 104 left and right sides all fixedly connected with slide bar one 105, baffle 106 rear end is laminated with cabinet 101 front end mutually, collection steamer tray 104 is through slide bar one 105 that the left and right sides set up and spout one 103 sliding connection that horizontal fluting 102 left and right sides inner wall was seted up, and horizontal fluting 102 top and screening case 2 inside intercommunication, the raw materials that pass through then drop into collection steamer tray 104 inside and collect when screening, then after the screening is accomplished, processing personnel can directly be followed the inside taking out of collection steamer tray 104 through pulling hand pull rod 107, clear up qualified raw materials.

Wherein, screening case 2 front end is connected with cabinet door 203 through the hinge rotation, screening case 2 top fixedly connected with feeder hopper 202, the equal fixedly connected with return spring of both sides one 204 around the backup pad 205 top, return spring one 204 top and screening case 2 inside top fixedly connected with, and the inside attenuator that is equipped with of return spring one 204, screening cabinet 208 receives external force vibrations, screening cabinet 208 can reset under the effect of return spring one 204 to realize screening cabinet 208's reciprocates.

The specific operation mode of the utility model is as follows:

Firstly, a processing person can select a screening cabinet 208 with a screen 209 with a corresponding caliber according to the crushing degree of raw materials, then pull a hand pulling block 408 to enable a limiting plate 405 to enter the clamping plate 401, then insert a sliding rod II 210 arranged on the screening cabinet 208 into a sliding groove II 207 to finish the installation of the screening cabinet 208, after the screening cabinet 208 is inserted between supporting plates 205, release the hand pulling block 408 to enable the limiting plate 405 to reset under the action of a reset spring II 409 to limit the sliding rod II 210 to prevent the screening cabinet 208 from sliding out during screening, then close a cabinet door 203, add raw materials into the screening cabinet 208 through a feed hopper 202, adjust the height of a movable seat 304 through rotating a hand rotating disc 306, change the distance between a piston rod 314 and the impacted plate 206, adjust vibration force, enable the processing person to adjust according to the crushing condition of the raw materials, the reduction of the screening effect of the raw materials caused by too small vibration is prevented, meanwhile, the disc 311 is driven to rotate by starting the driving motor 309, the disc 311 can drive the rotary rod 312 to rotate, the piston rod 314 is pulled to do piston motion in the limiting cylinder 310 under the action of the connecting rod 313, so that the hit plate 206 is hit, the raw materials are screened in a vibration manner, the screening cabinet 208 is reset under the action of the first reset spring 204, the up-and-down movement of the screening cabinet 208 is realized, the screening cabinet 208 screens the raw materials through the screen 209 arranged in the screening cabinet 208, the unqualified raw materials are retained in the screening cabinet 208, the qualified raw materials fall into the collecting drawer 104 to be collected, after the screening of the raw materials is completed, a processor can open the cabinet door 203 and then move the limiting plate 405 through the pulling of the pulling hand block 408, the limitation of the second slide rod 210 is relieved, so that the processing personnel can take out the screening cabinet 208 together with the unqualified raw materials screened out from the interior for cleaning.

While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the embodiments described above, but is intended to be within the scope of the utility model, as long as such insubstantial modifications are made by the method concepts and technical solutions of the utility model, or the concepts and technical solutions of the utility model are applied directly to other occasions without any modifications.

Claims

1. Asphalt screening plant, comprising a bottom plate (1), characterized in that: bottom plate (1) top fixedly connected with end cabinet (101), end cabinet (101) top fixedly connected with screening case (2), fluting (201) have all been seted up to screening case (2) left and right sides, screening case (2) inside left and right sides all is equipped with backup pad (205), spout two (207) have all been seted up to backup pad (205) relative one side bottom, be equipped with screening cabinet (208) between backup pad (205), screening cabinet (208) inside bottom fixedly connected with screen cloth (209), screening cabinet (208) left and right sides bottom equal fixedly connected with slide bar two (210), top center department fixedly connected with of screening cabinet (208) one side is kept away from to backup pad (205) is hit board (206), backup pad (205) front end bottom just is located one side that screening cabinet (208) were kept away from to spout two (207) is equipped with joint mechanism (4), bottom plate (1) top just is located end cabinet (101) left and right sides symmetry is equipped with vibration adjustment mechanism (3).

2. An asphalt screening apparatus according to claim 1, wherein: the clamping mechanism (4) comprises a clamping plate (401) fixedly connected to the bottom of the front end of the supporting plate (205), one side, away from the limiting plate (405), of the clamping plate (401) is fixedly connected with a fixed vertical plate (402), limiting sliding grooves (403) are formed in the inner walls of the upper side and the lower side of the clamping plate (401), movable plates (404) are arranged inside the clamping plate (401), limiting sliding blocks (406) are fixedly connected to the upper side and the lower side of the movable plates (404), one side, close to the sliding plate (207), of the movable plates (404) is fixedly connected with a limiting plate (405), one side, away from the limiting plate (405), of the movable plates (404) is fixedly connected with a pull rod (407), one end, away from the movable plates (404), of the pull rod (407) penetrates through the fixed vertical plate (402) and is fixedly connected with a hand pulling block (408), one side, away from the limiting plate (405) of the movable plates (404) and two sides, which are located on the upper side and lower side of the pull rod (407), are fixedly connected with a reset spring (409), and one end, away from the movable plates (404) of the side of the movable plates (402) is fixedly connected with a side of the fixed side.

3. An asphalt screening apparatus according to claim 1, wherein: the vibration adjusting mechanism (3) comprises a mounting seat (301) fixedly connected to the top of a bottom plate (1), limiting round rods (302) are fixedly connected to the front side and the rear side of the top of the mounting seat (301), a top plate (303) is fixedly connected to the top of each limiting round rod (302), a movable seat (304) is arranged between the limiting round rods (302), an adjusting screw (307) is arranged inside each movable seat (304), the top end of each adjusting screw (307) penetrates through the top plate (303) and is fixedly connected with a hand turntable (306), one side, close to the bottom cabinet (101), of each movable seat (304) is fixedly connected with a supporting transverse plate (305), a driving cylinder (308) is fixedly connected to the top of each supporting transverse plate (305), a driving motor (309) is fixedly connected to the rear end of each driving cylinder (308), a limiting cylinder (310) is fixedly connected to each driving cylinder (308), a piston rod (314) is fixedly connected to the inside each limiting cylinder, a connecting lug (315) is fixedly connected to the bottom of each piston rod (314), a disc (311) is arranged inside each driving cylinder (308), and a rotary rod (312) is fixedly connected to each connecting lug (315).

4. An asphalt screening apparatus according to claim 2, wherein: the screening cabinet (208) is connected with a sliding groove II (207) which is formed in the bottom of one side opposite to the supporting plate (205) through a sliding rod II (210) which is arranged at the bottom of the left side and the right side, the front side of the sliding rod II (210) is attached to the rear side of the limiting plate (405), the movable plate (404) is connected with a limiting sliding groove (403) which is formed in the inner walls of the upper side and the lower side of the clamping plate (401) through a limiting sliding block (406) which is arranged at the upper side and the lower side, the sliding rod (407) is connected with a fixed vertical plate (402) in a penetrating way, and a damper is arranged in the reset spring II (409).

5. A pitch screening apparatus according to claim 3, wherein: disc (311) rear side and driving motor (309) output fixed connection, connecting rod (313) one end and bull stick (312) rotate to be connected, connecting rod (313) other end and engaging lug (315) rotate to be connected, movable seat (304) and adjusting screw (307) threaded connection, movable seat (304) cover are established in spacing round bar (302) outside and with spacing round bar (302) sliding connection, just adjusting screw (307) and roof (303) run through the department and rotate to be connected, receive and hit board (206) run through fluting (201) and extend screening case (2) outside, receive and hit board (206) and fluting (201) sliding connection, piston rod (314) top is laminated with receiving and hit board (206) bottom mutually.

6. An asphalt screening apparatus according to claim 1, wherein: the novel multifunctional kitchen cabinet is characterized in that a transverse slot (102) is formed in the front end of the bottom cabinet (101), a first sliding groove (103) is formed in the inner walls of the left side and the right side of the transverse slot (102), a collecting drawer (104) is arranged in the transverse slot (102), a baffle plate (106) is fixedly connected to the front end of the collecting drawer (104), a hand pull rod (107) is fixedly connected to the left side and the right side of the front end of the baffle plate (106), and a first sliding rod (105) is fixedly connected to the left side and the right side of the collecting drawer (104).

7. An asphalt screening apparatus according to claim 6, wherein: the rear end of the baffle (106) is attached to the front end of the bottom cabinet (101), the collection drawer (104) is connected with a sliding groove I (103) formed in the inner walls of the left side and the right side of the transverse slotting (102) in a sliding manner through a sliding rod I (105) arranged on the left side and the right side, and the top of the transverse slotting (102) is communicated with the inside of the screening box (2).

8. An asphalt screening apparatus according to claim 1, wherein: the front end of the screening box (2) is rotationally connected with a cabinet door (203) through a hinge, the top of the screening box (2) is fixedly connected with a feed hopper (202), and the front side and the rear side of the top of the supporting plate (205) are fixedly connected with a first reset spring (204).

9. An asphalt screening apparatus according to claim 8, wherein: the top of the first return spring (204) is fixedly connected with the top end inside the screening box (2), and a damper is arranged inside the first return spring (204).