Screening machine with self-cleaning function

Abstract

The utility model provides a screening machine with a self-cleaning function. The screening machine comprises a main body frame, a screening part, a self-cleaning part, a recycling part and a control part, the main body frame comprises a base, a screening seat and a tailing collecting seat; the screening part comprises a feeding mechanism, a screening mechanism and a recycling mechanism; the self-cleaning part comprises a feeding cleaning mechanism, an air duct cleaning mechanism and a discharging cleaning mechanism; the recycling part comprises a collecting mechanism, a gathering mechanism and a drying mechanism. Automatic cleaning of the screening machine can be achieved, equipment does not need to be disassembled, the cleaning difficulty is greatly reduced, and the cleaning efficiency is improved; automatic cleaning operation can be carried out in screening gaps of different batches of materials, so that scraps of the corresponding materials are recycled, and classified storage and recycling are facilitated; and the use state unification of the equipment can be realized, the influence of material scraps on the equipment is reduced, the service life is prolonged, and meanwhile, the screening quality is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of screening machines, in particular to a screening machine with a self-cleaning function. Background Art

[0002] Screening machines are devices used to select materials that meet the specified specifications during the screening process. They mainly include the following types: vibration screening machine: uses vibration force to separate materials into particles of different sizes; wind separation screening machine: uses centrifugal separation to separate materials into heavier and lighter parts; electrostatic screening machine: uses the principle of static electricity to achieve separation; drum screening machine: similar to the drum of a washing machine, the material and the screen are separated by friction; hydraulic screening machine: uses hydraulic impact to separate materials.

[0003] Among them, the wind selection and screening machine is a common screening equipment. For example, a wind selection and screening machine disclosed in Chinese patent CN219745540U includes: a machine body, a feed seat, a motor, a first fan, a second fan and a support seat, the upper end of the machine body is fixedly connected to the feed seat, the side wall of the feed seat is fixedly connected to the motor, the left end of the machine body is fixedly connected to the first fan, the right end of the machine body is fixedly connected to the second fan, the bottom end of the machine body is fixedly connected to the support seat, and the feed structure includes a rotating rod, the rotating rod is fixedly connected to the output shaft of the motor, the side wall of the rotating rod is fixedly connected to a baffle, the baffle is made of rubber, and the bottom end of the baffle is fixedly connected to the first rotating shaft.

[0004] Such as the above-mentioned wind selection screening machine, there are the following defects during use:

[0005] First, the machine needs to be disassembled extensively for cleaning, which makes cleaning difficult and time-consuming.

[0006] Secondly, the machinery is disassembled during cleaning, which results in a long cleaning cycle and makes it difficult to reuse the recyclables.

[0007] Third, frequent disassembly of machinery will shorten the service life of the equipment and cause large fluctuations in screening accuracy. Utility Model Content

[0008] The utility model provides a screening machine with a self-cleaning function, which can effectively solve the problems mentioned in the background technology.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A screening machine with a self-cleaning function comprises a main frame, a screening part, a self-cleaning part, a recycling part and a control part.

[0011] Specifically, the main frame includes a base, a screening seat and a tailings collecting seat.

[0012] The screening seat and the tailings collection seat are arranged on the base through pillars; the screening seat and the tailings collection seat are fixedly connected. The base includes a rectangular hollow container, on which an "n"-shaped base frame is evenly spaced, and mounting pin holes are arranged on the upper bottom plate; the mounting pin holes include a rectangular through hole three and an "L"-shaped through hole; the rectangular through hole three and the "L"-shaped through hole form a "9"-shaped through hole. The screening seat includes a rectangular hollow container, on which a circular through hole one is arranged on the upper bottom plate, an air intake through hole is arranged on the right side plate, a circular through hole two is arranged on the left side plate, circular pin holes are arranged on the front side plate and the rear side plate, and a rectangular through hole one is arranged on the lower bottom plate. The tailings collection seat includes a rectangular hollow container three, on the right side plate of which a circular through hole three is arranged, and a rectangular through hole two is arranged on the lower bottom plate; a maintenance through hole is arranged on the upper bottom plate; a rectangular through hole four is arranged on the left side plate; the circular through hole three is adapted to the circular through hole two; a funnel one is arranged on the rectangular through hole two; a movable cover is arranged on the maintenance through hole; connecting pipes are arranged in the circular through hole three and the circular through hole two, and a gathering bucket is arranged at the right end of the connecting pipe.

[0013] Specifically, the screening part includes a feeding mechanism, a screening mechanism and a recycling mechanism. The feeding mechanism includes a feeding hopper, a chain conveyor and a "U"-shaped limiting side plate; the feeding hopper is arranged on a circular through hole 1; the "U"-shaped limiting side plate is arranged on the inner wall of the upper bottom plate of the screening seat; the chain conveyor is arranged in the screening seat, and its upper conveyor belt is located in the "U"-shaped limiting side plate; a partition scraper is arranged on the chain plate of the chain conveyor. The screening mechanism includes a blower, a partition baffle, an adjustment handle, an electromagnet 1 and an annular iron sheet; the blower is arranged in the screening seat through a circular air inlet pipe; one end of the circular air inlet pipe is arranged on the air inlet through hole, and the other end is arranged in the circular through hole 2; the partition baffle pin is connected to the circular pin hole; the adjustment handle is arranged at one end of the partition baffle and is located on the front side of the screening seat; the electromagnet 1 is arranged on the adjustment handle; the annular iron sheet is arranged on the front side plate of the screening seat; the electromagnet 1 is adapted to the annular iron sheet. The recycling mechanism includes a collecting bucket, a flexible collecting tube, a shutter and a separation net; the collecting bucket is arranged in a rectangular through hole one, and is respectively located on the left and right sides of the separation baffle; the flexible collecting tube is arranged at the lower end of the funnel one; the shutter is arranged in a rectangular through hole four; the separation net is arranged in a tailing material collecting seat through a bracket, and is arranged at an angle.

[0014] Specifically, the self-cleaning part includes a feed cleaning mechanism, an air duct cleaning mechanism and a discharge cleaning mechanism. The feed cleaning mechanism includes a push rod motor 1, a servo motor 1, a cleaning wheel and a fixed row brush; the push rod motor 1 is arranged in the screening seat, and a mounting plate is arranged on its movable end; the cleaning wheel pin is connected to the mounting plate; the servo motor 1 is arranged on the mounting plate; the servo motor 1 and the cleaning wheel are connected by transmission; the fixed row brush is arranged in the screening seat. The air duct cleaning mechanism includes an electric telescopic rod 1, a cleaning box, an electric telescopic rod 2, a servo motor 2 and a cleaning disk; the electric telescopic rod 1 is arranged on the screening seat through an "n"-shaped bracket; the cleaning box is arranged on the movable end of the electric telescopic rod 1, including a rectangular hollow container 4, and a rectangular through hole 2 is arranged on its left side plate; the electric telescopic rod 2 is arranged in the rectangular hollow container 4; the servo motor 2 is arranged on the movable end of the electric telescopic rod 2 through an "L"-shaped mounting plate; the cleaning disk is arranged on the movable end of the servo motor 2. The discharge cleaning mechanism includes a compressor, a high-pressure nozzle 1, a high-pressure nozzle 2 and a screw stepper motor 1; the screw stepper motor 1 is arranged in a tail material collection seat through a mounting bracket; the high-pressure nozzle 1 is arranged on a nut seat of the screw stepper motor 1 through a movable carrier plate; the high-pressure nozzle 2 is equidistantly arranged in a collection bucket and a funnel 1; the compressor, the high-pressure nozzle 1 and the high-pressure nozzle 2 are connected through an electromagnetic valve.

[0015] Specifically, the recovery part includes a collecting mechanism, a gathering mechanism and a drying mechanism.

[0016] More specifically, the collection mechanism includes a collection box, a supply pump and a recovery trough. The collection box is arranged in the base, and a first U-shaped opening slot is arranged on the front side plate thereof, and a second U-shaped opening slot is arranged on the right side plate; one end of the recovery trough is arranged on the collection box, and the other end is arranged on the base; the supply pump is arranged on the collection box, and the water outlet end of the supply pump is arranged on the inner wall of the side plate of the recovery trough.

[0017] More specifically, the convergence mechanism includes a screw stepper motor 2, a push rod motor 2, a cleaning brush, a screw stepper motor 3, an "L"-shaped collection plate, a screw stepper motor 4 and a strip push rod. The screw stepper motor 2 is arranged on the base; the push rod motor 2 is arranged on the nut seat of the screw stepper motor 2 through the movable carrier plate 2; the cleaning brush is arranged on the movable end of the push rod motor 2 for cleaning the recovery trough tube; the screw stepper motor 3 is arranged on the base through the mounting frame and is located above the collection box; the "L"-shaped collection plate is arranged on the nut seat of the screw stepper motor 3 through the push rod motor 5; a circular water-permeable hole is arranged on the "L"-shaped collection plate; the screw stepper motor 4 is arranged on the base through the mounting frame and is located above the collection box, and it is perpendicular to the screw stepper motor 3; the strip push rod is arranged on the nut seat of the screw stepper motor 4 through the push rod motor 6; and the lower end of the strip push rod is provided with bristles.

[0018] More specifically, the drying mechanism includes a push rod motor 7, a collection box, a screen and a connecting pipe. The collection box is arranged on the bottom plate of the base through the push rod motor 7, and a "U"-shaped opening slot 3 is arranged on the side plate thereof, and the upper end is located above the mounting pin hole; the screen is arranged in the collection box; a "U"-shaped connecting pipe is arranged on the "U"-shaped opening slot 3 of the collection box; the "U"-shaped connecting pipe is adapted to the "U"-shaped opening slot 2; one end of the connecting pipe is arranged on the bottom plate of the collection box, and the other end is arranged on the side plate of the collection box for liquid recovery.

[0019] Specifically, the control system includes a control mechanism, a feedback mechanism and a PLC controller. The control mechanism includes a start switch, a fixed switch, a cleaning switch and a pause switch. The feedback mechanism includes a distance sensor module.

[0020] Furthermore, a fan is added to the side plate of the collecting box to increase the drying speed.

[0021] Advantages compared to the prior art:

[0022] In the utility model, the following functions are realized through the overall arrangement of the main frame, the screening part, the self-cleaning part, the recycling part and the control part:

[0023] Firstly, it realizes automatic cleaning of the screening machine without disassembling the equipment, which greatly reduces the difficulty of cleaning and improves the cleaning efficiency.

[0024] Secondly, the settings of the self-cleaning part and the recycling part can perform automatic cleaning operations in the gaps between material screening of different batches, thereby recovering the debris of the corresponding materials, facilitating classification and storage, and facilitating recycling and reuse.

[0025] Thirdly, the setting of the self-cleaning part and the recycling part realizes the unification of the equipment's use status, reduces the impact of material debris on the equipment, extends its service life, and greatly improves the screening quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the top view structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0028] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the utility model;

[0029] Figure 4 This is a schematic diagram of a partially enlarged cross-sectional structure of the utility model;

[0030] Figure 5 A is a schematic diagram of the structure of the utility model system;

[0031] Figure 6 This is a schematic diagram B of the system structure of the utility model.

[0032] In the figure: 101. base, 102. screening seat, 103. tailing material collection seat, 201. feed hopper, 202. chain conveyor, 203. "U" shaped limit side plate, 204. blower, 205. partition baffle, 206. adjustment handle, 207. ring iron sheet, 208. collection bucket, 209. flexible collection tube, 210. shutter, 211. partition net, 301. push rod motor 1, 302. cleaning wheel, 303. fixed row brush, 304. electric telescopic rod 1, 305. cleaning box, 306. electric telescopic rod 2, 307. servo motor 2, 308. cleaning disk, 309. screw stepper motor 1, 310. high pressure nozzle 1, 311. high pressure nozzle 2, 401. collection box, 402. Recovery trough tube, 403. Supply pump, 404. Screw stepper motor 2, 405. Push rod motor 2, 406. Cleaning brush, 407. Screw stepper motor 3, 408. "L" shaped collecting plate, 409. Screw stepper motor 4, 410. Push rod motor 6, 411. Push rod motor 7, 412. Collecting box, 413. Screen, 414. Push rod motor 5. DETAILED DESCRIPTION

[0033] Example 1, refer to the attached Figure 1-6 , a screening machine with self-cleaning function, comprising a main frame, a screening part, a self-cleaning part, a recycling part and a control part.

[0034] The main frame includes a base 101 , a screening seat 102 and a tailings collecting seat 103 .

[0035] The screening seat 102 and the tailing material collecting seat 103 are arranged on the base 101 through pillars; the screening seat 102 and the tailing material collecting seat 103 are fixedly connected.

[0036] The base 101 includes a rectangular hollow container.

[0037] “n” shaped chassis are arranged on the base 101 at equal intervals.

[0038] A mounting pin hole is arranged on the upper bottom plate of the rectangular hollow container 1;

[0039] The mounting pin hole comprises a third rectangular through hole and an "L"-shaped through hole; the third rectangular through hole and the "L"-shaped through hole form a "9"-shaped through hole.

[0040] The screening seat 102 includes a second rectangular hollow container.

[0041] A circular through hole 1 is arranged on the upper bottom plate of the second rectangular hollow container.

[0042] An air inlet hole is arranged on the right side plate of the second rectangular hollow container.

[0043] A second circular through hole is arranged on the left side plate of the second rectangular hollow container.

[0044] Circular pin holes are arranged on the front side plate and the rear side plate of the second rectangular hollow container.

[0045] A rectangular through hole 1 is arranged on the lower bottom plate of the rectangular hollow container 2.

[0046] The tailings collecting seat 103 comprises a rectangular hollow container three.

[0047] A circular through hole three is arranged on the right side plate of the rectangular hollow container three, which is matched with the circular through hole two.

[0048] A rectangular through hole 2 is arranged on the lower bottom plate of the rectangular hollow container 3; and a funnel 1 is arranged on the rectangular through hole 2.

[0049] An inspection through hole is arranged on the upper bottom plate of the rectangular hollow container three; and a movable cover plate is arranged on the inspection through hole.

[0050] A rectangular through hole four is arranged on the left side plate of the rectangular hollow container three.

[0051] A connecting pipe is arranged in the circular through hole three and the circular through hole two, and a gathering bucket is arranged at the right end of the connecting pipe.

[0052] The screening part includes a feeding mechanism, a screening mechanism and a recovery mechanism.

[0053] The feeding mechanism includes a feeding hopper 201 , a chain conveyor belt 202 and a “U”-shaped limiting side plate 203 .

[0054] The feed hopper 201 is disposed on the circular through hole 1.

[0055] The “U”-shaped limiting side plate 203 is arranged on the inner wall of the upper bottom plate of the screening seat 102 .

[0056] The chain conveyor 202 is disposed in the screening seat 102 ; and the upper conveyor belt of the chain conveyor 202 is located in the “U”-shaped limiting side plate 203 .

[0057] A separating scraper is provided on the chain plate of the chain conveyor 202 .

[0058] The screening mechanism includes a blower 204, a partition baffle 205, an adjustment handle 206, an electromagnet and an annular iron sheet 207.

[0059] The blower 204 is disposed in the screening seat 102 via a circular air inlet pipe.

[0060] One end of the circular air inlet pipe is arranged on the air inlet through hole, and the other end is arranged in the second circular through hole.

[0061] The partition baffle 205 is pin-connected in the circular pin hole.

[0062] The adjustment handle 206 is disposed at one end of the partition baffle 205 , and the adjustment handle 206 is located at the front side of the screening seat 102 .

[0063] The first electromagnet is disposed on the adjustment handle 206 .

[0064] The annular iron sheet 207 is disposed on the front side plate of the screening seat 102 .

[0065] Electromagnet 1 is matched with the annular iron sheet 207 .

[0066] The recovery mechanism includes a collection bucket 208 , a flexible collection tube 209 , a shutter 210 and a separation net 211 .

[0067] The collecting bucket 208 is arranged in the rectangular through hole 1, and is respectively located on the left and right sides of the partition baffle 205.

[0068] The flexible collection tube 209 is arranged at the lower end of the funnel one.

[0069] The shutter 210 is disposed in the rectangular through hole 4.

[0070] The separation net 211 is disposed in the tailings collecting seat 103 through a bracket; and the separation net 211 is disposed obliquely.

[0071] The self-cleaning part includes a feed cleaning mechanism, an air duct cleaning mechanism and a discharge cleaning mechanism.

[0072] The feeding cleaning mechanism includes a push rod motor 301 , a servo motor 1 , a cleaning wheel 302 and a fixed row brush 303 .

[0073] The push rod motor 301 is disposed in the screening seat 102 .

[0074] A mounting plate is arranged on the movable end of the push rod motor 301.

[0075] The cleaning wheel 302 is pin-connected to the mounting plate.

[0076] The servo motor is arranged on the mounting plate.

[0077] The servo motor 1 and the cleaning wheel 302 are transmission connected.

[0078] The fixed brush 303 is disposed in the screening seat 102 .

[0079] The air duct cleaning mechanism includes an electric telescopic rod 1 304 , a cleaning box 305 , an electric telescopic rod 2 306 , a servo motor 2 307 and a cleaning disk 308 .

[0080] The electric telescopic rod 304 is arranged on the screening seat 102 through an "n"-shaped bracket.

[0081] The cleaning box 305 is arranged on the movable end of the electric telescopic rod 304 .

[0082] The cleaning box 305 includes a rectangular hollow container 29.

[0083] A rectangular through hole 2 is arranged on the left side plate of the rectangular hollow container 4.

[0084] The electric telescopic rod 2 306 is disposed in the rectangular hollow container 4.

[0085] The servo motor 307 is arranged on the movable end of the electric telescopic rod 306 through an "L"-shaped mounting plate.

[0086] The cleaning plate 308 is disposed on the movable end of the second servo motor 307 .

[0087] The discharge cleaning mechanism includes a compressor, a high-pressure nozzle 1 310 , a high-pressure nozzle 2 312 and a screw stepping motor 1 309 .

[0088] The screw stepper motor 309 is arranged in the tailing material collecting seat 103 through a mounting bracket.

[0089] The high pressure nozzle 310 is arranged on the nut seat of the screw stepping motor 309 through a movable carrier plate.

[0090] The second high-pressure nozzle 312 is equidistantly arranged in the collection bucket 208 and the first funnel.

[0091] The compressor, the high pressure nozzle 1 310 and the high pressure nozzle 2 312 are connected through a solenoid valve.

[0092] The recovery part includes a collecting mechanism, a gathering mechanism and a drying mechanism.

[0093] The collection mechanism includes a collection box 401 , a supply pump 403 and a recovery tank tube 402 .

[0094] The collection box 401 is disposed in the base 101 .

[0095] A U-shaped opening through slot 1 is provided on the front side plate of the collection box 401 .

[0096] A second U-shaped opening slot is provided on the right side plate of the collection box 401 .

[0097] One end of the recovery tank tube 402 is disposed on the collection box 401 , and the other end is disposed on the base 101 .

[0098] The supply pump 403 is disposed on the collection box 401 , and the water outlet end of the supply pump 403 is disposed on the inner wall of the side plate of the recovery tank pipe 402 .

[0099] The converging mechanism comprises a second screw stepper motor 404, a second push rod motor 405, a cleaning brush 406, a third screw stepper motor 407, an "L"-shaped converging plate 408, a fourth screw stepper motor 409 and a bar push rod.

[0100] The screw stepper motor 404 is disposed on the base 101 .

[0101] The push rod motor 2 405 is arranged on the nut seat of the screw rod stepping motor 2 404 through the movable carrier plate 2.

[0102] The cleaning brush 406 is disposed on the movable end of the push rod motor 405 and is used for cleaning the recovery groove tube 402 .

[0103] The screw stepper motor 3 407 is arranged on the base 101 through a mounting frame and is located above the collection box 401 .

[0104] The “L” shaped collecting plate 408 is arranged on the nut seat of the screw stepping motor three 407 through the push rod motor five 414.

[0105] A circular water-permeable hole is provided on the “L”-shaped collecting plate 408 .

[0106] The screw stepper motor 409 is arranged on the base 101 through a mounting frame and is located above the collection box 401.

[0107] The screw stepper motor four 409 and the screw stepper motor three 407 are perpendicular to each other.

[0108] The strip push rod is arranged on the nut seat of the screw stepping motor four 409 through the push rod motor six 410.

[0109] Brush bristles are arranged at the lower end of the strip push rod.

[0110] The drying mechanism includes a push rod motor 411, a collecting box 412, a screen 413 and a connecting pipe.

[0111] The collection box 412 is arranged on the lower bottom plate of the base 101 through the push rod motor 7 411. The upper end of the collection box 412 is located above the mounting pin hole;

[0112] A U-shaped opening through slot three is provided on the side plate of the collection box 412 .

[0113] The screen 413 is disposed in the collection box 412 .

[0114] A "U"-shaped connecting pipe is provided on the "U"-shaped opening slot 3 of the collecting box 412; the "U"-shaped connecting pipe is adapted to the "U"-shaped opening slot 2.

[0115] One end of the connecting tube is arranged on the lower bottom plate of the collecting box 412, and the other end is arranged on the side plate of the collecting box 401 for liquid recovery.

[0116] The control system includes a control mechanism, a feedback mechanism and a PLC controller.

[0117] The control mechanism includes a start switch, a fixed switch, a cleaning switch and a pause switch.

[0118] The start switch, the cleaning switch, and the pause switch are arranged on the side plate of the screening seat 102 .

[0119] The fixed switch is disposed on the adjustment handle 206 .

[0120] The feedback mechanism includes a distance sensor module.

[0121] The distance sensor module is disposed on the side plate of the cleaning box 305 to assist the PLC controller in collecting the position information of the connecting pipe.

[0122] The PLC controller is arranged in the base.

[0123] Working principle and usage:

[0124] The first step is pre-setting:

[0125] Press the start switch to perform a no-load test on the device.

[0126] Inject cleaning liquid (such as water) into the collection box 401.

[0127] The material to be screened (eg plastic particles) is placed into the feed hopper 201 .

[0128] The collection frames are placed under the collection bucket 208 and the flexible collection tube 209 respectively.

[0129] Adjust the angle of the handle 206 according to the needs. The specific process is: press the fixed switch, the PLC controller outputs a signal to the electromagnet 1; the electromagnet 1 is turned off, and the handle 206 is rotated to a suitable angle. After that, press the fixed switch again, the PLC controller outputs a signal to the electromagnet 1; the electromagnet 1 is turned on. The fixation between the electromagnet 1 and the annular iron sheet 207 is completed.

[0130] Step 2: Screening:

[0131] Press the start switch, and the PLC controller outputs signals to the chain conveyor 202 and the blower 204.

[0132] The blower 204 is started. The chain conveyor 202 is started with a delay, and the plastic particles are orderly transferred to the left side of the blower 204. The screening is completed under the action of gravity and the blower 204. The full particles enter the collection bucket 208 on the right, the light particles enter the collection bucket 208 on the left, and the debris enters the recycling mechanism.

[0133] Step 3, Cleaning:

[0134] After transferring the acquisition frame, press the cleaning switch, and the PLC controller outputs signals to the push rod motor 1 301, the servo motor 1, the electric telescopic rod 1 304, the electric telescopic rod 2 306, the servo motor 2 307, the screw stepper motor 3 407, and the screw stepper motor 4 409.

[0135] The push rod motor 1 301 drives the cleaning wheel 302 to move upward, and the servo motor 1 delays and drives the cleaning wheel 302 to rotate to clean the chain conveyor 202. The chain conveyor 202 is started intermittently to complete the cleaning of the entire chain conveyor 202.

[0136] Afterwards, the electric telescopic rod 1 304 drives the cleaning box 305 to move downward until the cleaning box 305 is aligned with the connecting pipe, and the distance sensor outputs a signal to the PLC controller, and the PLC controller outputs a signal to the electric telescopic rod 2 306 and the servo motor 2 307. The electric telescopic rod 2 306 drives the cleaning disc 308 to move toward the connecting pipe; the servo motor 2 307 drives the cleaning disc 308 to rotate to clean the connecting pipe.

[0137] After that, the compressor and the electromagnetic valve are started, and the high-pressure nozzle 2 312 cleans the collection bucket 208 and the funnel 1. The screw stepper motor 1 309 drives the high-pressure nozzle 1 310 to move, thereby cleaning the separation net 211.

[0138] The cleaned debris enters the recovery tank pipe 402 .

[0139] When the above cleaning is completed, the supply pump 403 is started to provide fluid to the recovery tank pipe 402.

[0140] The second push rod motor 405 drives the cleaning brush 406 to move downward, and the second screw stepper motor 404 drives the cleaning brush 406 to clean the recovery groove tube 402.

[0141] After the recycling trough tube 402 is cleaned, the screw stepper motor 3 407 drives the "L"-shaped collecting plate 408 to collect the debris in the collection box 401. The push rod motor 5 414 delays the "L"-shaped collecting plate 408 to move up. The screw stepper motor 409 drives the debris into the collection box 412 through the push rod motor 6 410 and the bar push rod. The push rod motor 7 411 drives the collection box 412 to move up, so that the cleaning liquid flows back to the collection box 401 through the screen 413 and the connecting pipe.

[0142] The staff finally recycled the drained debris.

[0143] Embodiment 2, based on embodiment 1, adds a fan on the side plate of the collecting box 412 to increase the drying speed.

Claims

1. A screening machine with self-cleaning function, characterized in that: The invention comprises a main frame, a screening part, a self-cleaning part, a recovery part and a control part; the main frame comprises a base (101), a screening seat (102) and a tailings collecting seat (103); the screening seat (102) and the tailings collecting seat (103) are arranged on the base (101) through pillars; the screening seat (102) and the tailings collecting seat (103) are fixedly connected; the screening part comprises a feeding mechanism, a screening mechanism and a recovery mechanism; the self-cleaning part comprises a feeding cleaning mechanism, an air duct cleaning mechanism and a discharging cleaning mechanism; the feeding cleaning mechanism comprises The invention comprises a push rod motor (301), a servo motor (301), a cleaning wheel (302) and a fixed row brush (303); the push rod motor (301) is arranged in a screening seat (102); a mounting plate is arranged on the movable end of the push rod motor (301); the cleaning wheel (302) is pin-connected to the mounting plate; the servo motor (301) is arranged on the mounting plate; the servo motor (301) and the cleaning wheel (302) are transmission-connected; the fixed row brush (303) is arranged in the screening seat (102); and the recovery part comprises a collecting mechanism, a gathering mechanism and a drying mechanism.

2. A screening machine with self-cleaning function according to claim 1, characterized in that: The air duct cleaning mechanism comprises an electric telescopic rod (304), a cleaning box (305), an electric telescopic rod (306), a servo motor (307) and a cleaning plate (308); the electric telescopic rod (304) is arranged on a screening seat (102) through an "n"-shaped bracket; the cleaning box (305) is arranged on the movable end of the electric telescopic rod (304), comprising a rectangular hollow container (4), a rectangular through hole (2) is arranged on the left side plate of the electric telescopic rod (306); the electric telescopic rod (306) is arranged in the rectangular hollow container (4); the servo motor (307) is arranged on the movable end of the electric telescopic rod (306) through an "L"-shaped mounting plate; and the cleaning plate (308) is arranged on the movable end of the servo motor (307).

3. A screening machine with self-cleaning function according to claim 1, characterized in that: The discharge cleaning mechanism comprises a compressor, a high-pressure nozzle 1 (310), a high-pressure nozzle 2 (312) and a screw stepper motor 1 (309); the screw stepper motor 1 (309) is arranged in a tail material collection seat (103) through a mounting bracket; the high-pressure nozzle 1 (310) is arranged on a nut seat of the screw stepper motor 1 (309) through a movable carrier plate; the high-pressure nozzle 2 (312) is arranged in a collection bucket (208) and a funnel 1; the compressor, the high-pressure nozzle 1 (310) and the high-pressure nozzle 2 (312) are connected through an electromagnetic valve.

4. A screening machine with self-cleaning function according to claim 1, characterized in that: The feeding mechanism comprises a feeding hopper (201), a chain conveyor belt (202) and a "U"-shaped limiting side plate (203); the feeding hopper (201) is arranged on a circular through hole; the "U"-shaped limiting side plate (203) is arranged on the inner wall of the upper bottom plate of the screening seat (102); the chain conveyor belt (202) is arranged in the screening seat (102); the upper conveyor belt of the chain conveyor belt (202) is located in the "U"-shaped limiting side plate (203); and a separation scraper is arranged on the chain plate of the chain conveyor belt (202).

5. The screening machine with self-cleaning function according to claim 1, characterized in that: The screening mechanism comprises a blower (204), a partition baffle (205), an adjustment handle (206), an electromagnet 1 and an annular iron sheet (207); the blower (204) is arranged in the screening seat (102) through a circular air inlet pipe; one end of the circular air inlet pipe is arranged on the air inlet through hole, and the other end is arranged in the circular through hole 2; the pin shaft of the partition baffle (205) is connected to the circular pin hole; the adjustment handle (206) is arranged at one end of the partition baffle (205), and the adjustment handle (206) is located at the front side of the screening seat (102); the electromagnet 1 is arranged on the adjustment handle (206); the annular iron sheet (207) is arranged on the front side plate of the screening seat (102); the electromagnet 1 is adapted to the annular iron sheet (207).

6. A screening machine with self-cleaning function according to claim 1, characterized in that: The recovery mechanism comprises a collection bucket (208), a flexible collection tube (209), a shutter (210) and a separation net (211); the collection bucket (208) is arranged in a rectangular through hole 1, and is respectively located on the left and right sides of a separation baffle (205); the flexible collection tube (209) is arranged at the lower end of the funnel 1; the shutter (210) is arranged in a rectangular through hole 4; the separation net (211) is arranged in a tailing material collection seat (103) through a bracket; and the separation net (211) is arranged in an inclined manner.

7. The screening machine with self-cleaning function according to claim 1, characterized in that: The collection mechanism comprises a collection box (401), a supply pump (403) and a recovery trough pipe (402); the collection box (401) is arranged in the base (101); a first "U"-shaped opening slot is arranged on the front side plate of the collection box (401), and a second "U"-shaped opening slot is arranged on the right side plate; one end of the recovery trough pipe (402) is arranged on the collection box (401), and the other end is arranged on the base (101); the supply pump (403) is arranged on the collection box (401), and the water outlet end of the supply pump (403) is arranged on the inner wall of the side plate of the recovery trough pipe (402).

8. The screening machine with self-cleaning function according to claim 1, characterized in that: The converging mechanism comprises a second screw stepping motor (404), a second push rod motor (405), a cleaning brush (406), a third screw stepping motor (407), an "L"-shaped converging plate (408), a fourth screw stepping motor (409) and a bar push rod; the second screw stepping motor (404) is arranged on a base (101); the second push rod motor (405) is arranged on a nut seat of the second screw stepping motor (404) through a second movable carrier plate; the cleaning brush (406) is arranged on a movable end of the second push rod motor (405); the third screw stepping motor (407) is arranged on the base (101) through a mounting frame, and Located above the collection box (401); an "L"-shaped collecting plate (408) is arranged on the nut seat of the screw stepping motor three (407) through a push rod motor five (414); a circular water permeable hole is arranged on the "L"-shaped collecting plate (408); a screw stepping motor four (409) is arranged on the base (101) through a mounting frame and is located above the collection box (401); the screw stepping motor four (409) and the screw stepping motor three (407) are perpendicular to each other; a strip push rod is arranged on the nut seat of the screw stepping motor four (409) through a push rod motor six (410); and bristles are arranged at the lower end of the strip push rod.

9. A screening machine with self-cleaning function according to claim 1, characterized in that: The drying mechanism comprises a push rod motor seven (411), a collection box (412), a screen (413) and a connecting pipe; the collection box (412) is arranged on the lower bottom plate of the base (101) through the push rod motor seven (411), the upper end of which is located above the mounting pin hole, and a "U"-shaped opening slot three is arranged on the side plate of the collection box (412); the screen (413) is arranged in the collection box (412); a "U"-shaped connecting pipe is arranged on the "U"-shaped opening slot three of the collection box (412); the "U"-shaped connecting pipe is adapted to the "U"-shaped opening slot two; one end of the connecting pipe is arranged on the lower bottom plate of the collection box (412), and the other end is arranged on the side plate of the collection box (401).

10. The screening machine with self-cleaning function according to claim 1, characterized in that: The base (101) comprises a rectangular hollow container 1, on which an installation pin hole is arranged on the upper bottom plate; the installation pin hole comprises a rectangular through hole 3 and an "L"-shaped through hole; the rectangular through hole 3 and the "L"-shaped through hole form a "9"-shaped through hole; the screening seat (102) comprises a rectangular hollow container 2, on which a circular through hole 1 is arranged on the upper bottom plate, an air intake through hole is arranged on the right side plate, a circular through hole 2 is arranged on the left side plate, circular pin holes are arranged on the front side plate and the rear side plate, and a rectangular through hole 1 is arranged on the lower bottom plate; the tailing material collecting seat (103) comprises a rectangular hollow container 3, on which a circular through hole 3 is arranged on the right side plate, a rectangular through hole 2 is arranged on the lower bottom plate, and an inspection through hole is arranged on the upper bottom plate; a rectangular through hole 4 is arranged on the left side plate; a funnel 1 is arranged on the rectangular through hole 2; a movable cover is arranged on the inspection through hole; connecting pipes are arranged in the circular through hole 3 and the circular through hole 2, and a gathering bucket is arranged at the right end of the connecting pipe.

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