CN112403658A

CN112403658A - Screening device for jaw crusher and using method

Info

Publication number: CN112403658A
Application number: CN202011198212.7A
Authority: CN
Inventors: 张宏强; 严伟东; 朱吉米; 周刚; 饶战胜
Original assignee: Chongqing Yichenxing Industrial Design Co ltd
Current assignee: Chongqing Yichenxing Industrial Design Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-02-26

Abstract

The invention belongs to the technical field of crushers, and particularly relates to a screening device for a jaw crusher, which comprises a detection mechanism, a conveying mechanism, a first screening mechanism, a first classification mechanism and a rack, wherein one end of the conveying mechanism is an input end, the other end of the conveying mechanism is an output end, the first screening mechanism is arranged behind the output end of the conveying mechanism, one end of the first screening mechanism is an end without iron, the other end of the first screening mechanism is an end with iron, and the conveying mechanism, the first screening mechanism and the first classification mechanism are all arranged on the rack; the equipment can classify the stones according to the size of the stones; the device can screen out the metal adhered on the stone. The invention also provides a using method of the screening device, which comprises the steps of adjusting the position of the detection mechanism, adjusting the height of the metal detector, detecting the metal, transmitting signals, classifying for the first time and the like.

Description

Screening device for jaw crusher and using method

Technical Field

The invention belongs to the technical field of crushers, and particularly relates to a screening device for a jaw crusher and a using method of the screening device.

Background

The jaw crusher is widely applied to crushing various ores and large materials in the industries of mine smelting, building materials, highways, railways, water conservancy, chemical engineering and the like, and comprises a working part and a working part, wherein the working part comprises a static jaw and a movable jaw, the static jaw is vertically fixed on the front wall of a machine body or the upper end of the static jaw is slightly outwards inclined, the position of the movable jaw is inclined, and a crushing cavity with a large upper part and a small lower part is formed by the movable jaw and the static jaw. The movable jaw is driven by the eccentric shaft (main shaft) to do periodic reciprocating motion relative to the static jaw, and the movable jaw is separated from the static jaw and closed to simulate the motion of two jaws of an animal to complete the material crushing operation. The movable jaw is arranged on an eccentric shaft, and is driven by the eccentric shaft to work, and the eccentric shaft is a main shaft of the jaw crusher.

The stone crusher can be classified into a medical stone crusher and a mining stone crusher according to the major category, the mining stone crusher is suitable for crushing massive mine hard rocks in principle, the typical granite discharging granularity is less than or equal to 40mm and accounts for 90%, the machine can process materials with the side length of 100-500 mm, a jaw crusher is commonly called as a jaw crusher and also called as an old tiger mouth, a crushing cavity is formed by two jaw plates of a movable jaw and a static jaw, the crusher simulates the movement of two jaws of an animal to complete material crushing operation, and the stone crusher is widely applied to crushing various ores and massive materials in the industries such as mine smelting, building materials, highways, railways, water conservancy, chemical engineering and the like.

When putting into the breaker storehouse with the building stones, because the iron plate texture is hard, unable breakage can damage breaker to along with built-in breaker rotates, form very big impact force to the inner wall, destroy interior bushing plate, lead to the unable normal work of breaker, in case shut down the maintenance will wholly disassemble breaker and change the damage part, and new accessories all will be changed from the producer delivery, and the repair cycle often needs a half a month, has influenced the normal operating of production.

The patent that publication number is CN210206967U discloses a jaw breaker with screening function, including jaw breaker main part and fixing base, the inboard fixedly connected with jaw breaker main part in top of fixing base, the bottom intercommunication of jaw breaker main part has the play hopper of vertical setting, the inboard fixedly connected with motor in rear end of fixing base, the terminal fixedly connected with cam of main shaft of motor, the top of cam is provided with the guide pulley, the outside of guide pulley is rotated and is connected with the connecting rod of vertical setting, the top fixedly connected with slider of connecting rod, and slider and fixing base sliding connection can filter the differentiation to the stone after the breakage through the effect of screen cloth, have improved screening efficiency, and can drive the periodic reciprocal vibrations of screen cloth through the effect of cam to screening speed has improved work efficiency.

The patent with publication number CN208786485U discloses an iron removal type jaw crusher, belongs to crushing equipment, and aims to provide a jaw crusher capable of removing iron materials in stone materials, the technical scheme is that the jaw crusher comprises a casing, a fixed jaw plate and a dynamic jaw plate which are opposite to each other are arranged in the casing, the fixed jaw plate is fixedly connected with the casing, an output shaft of a driving motor is penetrated at the upper end of the dynamic jaw plate, an adjusting seat and a spring which are connected with the dynamic jaw plate are arranged on one side, far away from the fixed jaw plate, of the dynamic jaw plate, and iron removal devices are circumferentially arranged at the upper end of the casing, on the fixed jaw plate and the dynamic jaw plate; the deironing device is connected with the casing through fixed subassembly including setting up the first iron plate of inhaling in casing upper end both sides, two first iron plates of inhaling are connected with the casing through fixed subassembly, and two first iron plates of inhaling side are provided with the scraper blade of two first iron plates opposite faces of laminating, and the scraper blade is connected with through coupling assembling and drives actuating cylinder. This patent is applicable to crushing plants. However, the following problems still exist:

1. the prior art can not classify the stone according to the size of the stone, and influences the processing efficiency and the crushing quality of the stone of the jaw crusher;

2. the metal is removed from the stones by the prior art, the metal is adsorbed from the stones through the magnets, and the metal adhered to the stones, the metal embedded into the stones and the metal blocked by the stones so as not to be adsorbed by the magnets cannot be screened in the prior art, and the metal screening success rate is low, so that the metal screening is seriously influenced by the blocking of the stones.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a screening device for a jaw crusher, which is used for solving the problem that the prior art can not classify stone materials according to the size of the stone materials, so that the processing efficiency and the crushing quality of the stone materials of the jaw crusher are influenced; the metal is removed from stones by a magnet in the prior art, and the problems that the metal adhered to the stones, the metal embedded into the stones and the metal blocked by the stones and cannot be adsorbed by the magnet in the prior art cannot be screened, the metal screening success rate is low, the metal screening is seriously influenced by the blocking of the stones and the like are solved.

In order to solve the technical problems, the invention adopts the following technical scheme:

a screening device for a jaw crusher comprises a detection mechanism, a conveying mechanism, a first screening mechanism, a first classification mechanism and a rack, wherein one end of the conveying mechanism is an input end, the other end of the conveying mechanism is an output end, the first screening mechanism is arranged behind the output end of the conveying mechanism, one end of the first screening mechanism is an end without iron, the other end of the first screening mechanism is an end with iron, and the conveying mechanism, the first screening mechanism and the first classification mechanism are all installed on the rack;

the detection mechanism also comprises a detection support, a metal detector and a detection signal processor, the detection support is arranged above the conveying mechanism, the metal detector and the detection signal processor are both arranged on the detection support, the stone to be processed is placed on the conveying mechanism through an input end, and the stone to be processed passes below the metal detector;

first classification mechanism includes two second swing arms and two second swing arm motors again, two the second swing arm is "eight" font level and places, two the second swing arm is close to near end at the non-iron end rear of first screening mechanism, be equipped with the second hank piece of even spiral winding on the second swing arm, every the second swing arm passes through two second swing arm seats and installs in the frame, and every the one end of second swing arm and the output shaft of a second swing arm motor.

The stone is thrown onto the conveying mechanism through stone throwing equipment at the front end of the device, the stone sequentially passes below the metal detector in the conveying process of the conveying mechanism, the metal detector detects metal of the stone, when the metal detector detects that the stone contains metal components, the metal detector sends out a signal, the signal is transmitted to the first screening mechanism through the detection signal processor, the signal contains time information of the detected metal components, the time of sending a screening instruction by the first screening mechanism is controlled through the conveying speed of the conveying mechanism, and the stone with the metal components is screened out; for example, by calculating the speed of the conveying mechanism and the distance of the stone from the metal detector to the first screening mechanism, it is obtained that 5 seconds are required for the process, and the time of the first screening mechanism sending the screening instruction is 4 seconds after the metal detector sends the signal, and the 1 second difference is the corresponding time of the first screening mechanism;

when the metal detector does not detect the working condition of metal, the stone is conveyed to the first sorting mechanism by the first screening mechanism, the second rotating rod motor drives the second rotating rod to rotate, the stone moves forwards under the rotating action of the second rotating rod and is sorted according to the size of the stone, and therefore the jaw crusher can process the stone with different sizes respectively. The equipment can classify the stones according to the size of the stones, and the jaw crusher processes the classified stones, so that the working efficiency is high, and the crushing quality is better; simultaneously, compare in the conventional technical scheme who adsorbs out with metal from the building stones through magnet, this device can sieve the metal of adhesion on the building stones, and the metal sieve removes the success rate height, does not receive the hindrance influence of building stones.

Furthermore, first screening mechanism includes two first swing arms and two first swing arm motors again, two first swing arm is parallel to each other and the level is placed, be equipped with the first twisted piece of even spiral winding on the first swing arm, every first swing arm is installed in the frame through two first swing arm seats, and every the one end of first swing arm is connected with the output shaft of a first swing arm motor.

When the metal detector does not detect metal, the first rotating rod motor drives the first rotating rod to rotate, so that stone enters the first sorting mechanism from the front end of the first screening mechanism; when the metal detector detects metal, the first rotating rod motor receives a signal transmitted by the signal processor and rotates reversely, so that the stone adhered with the metal is discharged from the rear end of the first screening mechanism through the first rotating rod. The mechanism not only can enable stones to be stably conveyed to the two first rotating rods by the conveying mechanism, but also can stably screen out large-size stones with metal, and is high in safety and reliability.

Further, first classification mechanism still includes two third swing arms, two the third swing arm is "eight" font level and places in between two second swing arms, every the third swing arm is parallel rather than an adjacent second swing arm, be equipped with the third hank piece of even spiral winding on the third swing arm, every the third swing arm is installed in the frame through two third swing arm seats, and every the one end of third swing arm and every the one end of second swing arm is common with the output shaft of a second swing arm motor.

The third rotary rod and the second rotary rod have the same rotating speed, the third twisted piece screw pitch is 2-3 times of the second twisted piece screw pitch, when stones enter the first sorting mechanism from the front end of the first screening mechanism, the second rotary rod motor simultaneously drives the second rotary rod and the third rotary rod to rotate, the stones are conveyed forwards under the rotating action of the second rotary rod, and meanwhile, the stones are turned over by the third rotary rod in the process of moving from the close end to the far end, so that the stones with irregular shapes can be accurately sorted and fall off; the mechanism is simple in structure, high in classification efficiency, good in classification effect, not prone to damage, convenient to detach, overhaul and replace and long in service life.

The second screening mechanism is arranged on the rack and is arranged below the first screening mechanism;

the second screening mechanism comprises a screening cylinder, a screening telescopic rod, a connecting rod, a turnover rod and a turnover plate, the cylinder is installed on the frame through a screening installation plate, one end of the screening telescopic rod is arranged inside the cylinder and is in sliding connection with the cylinder, the other end of the screening telescopic rod is movably connected with one end of the connecting rod through a connecting seat, the other end of the connecting rod is fixedly connected with the turnover rod, the turnover rod is perpendicular to the first rotary rod and is installed on the frame through two turnover rod seats, and one side of the turnover plate is fixed on the turnover rod.

When the metal detector detects metal, the detection signal processor transmits a signal containing metal to the first rotating rod motor and the screening cylinder, the screening cylinder and the first rotating rod motor simultaneously send out a screening instruction, after the screening cylinder receives the signal, the screening cylinder controls the shortening of the screening telescopic rod, the connecting rod drives the turnover plate to turn over, so that the turnover plate is inclined towards the rear end, and small-volume metal and small-volume stone adhered with metal slide down to the lower part of the rear end of the second screening mechanism through the turnover plate;

when the metal detector does not detect metal, the screening cylinder controls the extension of the screening telescopic rod, the connecting rod drives the turnover plate to turn over, so that the turnover plate is inclined towards the front end, and stone with small volume falls below the front end of the second screening mechanism through the turnover plate; this mechanism can be to partial small-size building stones, or the metal that exists alone, and it is high to sieve and metal screening success rate, does not receive the hindrance influence of building stones.

The device further comprises a second sorting mechanism, wherein the second sorting mechanism is arranged behind the first sorting mechanism and is arranged on the rack;

the second classification mechanism comprises a fourth rotating rod and two fourth rotating rod motors, the four rotating rods are horizontally placed in a splayed mode, the two fourth rotating rods are close to the rear portions, far away from the ends, of the two second rotating rods, are provided with fourth twisting pieces which are uniformly spirally wound, and each fourth rotating rod is installed on the rack through two fourth rotating rod seats and is connected with the output shaft of one fourth rotating rod motor at one end.

The large-volume stone materials which do not fall from the first sorting mechanism are continuously transmitted to the second sorting mechanism, the working principle of the second sorting mechanism is the same as that of the first sorting mechanism, and the stone materials fall and are separated from the front end to the rear end of the second sorting mechanism from small to large according to the size of the stone materials. The second sorting mechanism can be additionally arranged at the rear end of the first sorting mechanism, and can also be optionally not additionally arranged, so that the adaptability of the device is improved, the sorting working range is enlarged, and the sorting precision is higher.

The device further comprises an angle adjusting mechanism, wherein the angle adjusting mechanism consists of two symmetrically distributed angle adjusting units, the two angle adjusting units are arranged on two sides of the second sorting mechanism, and the second sorting mechanism is arranged on the rack through the angle adjusting mechanism;

the angle adjusting unit further comprises an adjusting plate, a first adjusting rod, a first rotating head, a first rack, a second adjusting rod, a second rotating head, a second rack, an adjusting connecting plate, an adjusting telescopic rod, an adjusting cylinder and an adjusting mounting plate, wherein the adjusting plate is a strip-shaped plate and is horizontally arranged, the first rotating head is arranged at one end of the adjusting plate and is rotatably connected with the adjusting plate, a first threaded hole is formed in the first rotating head, one end of the first adjusting rod is arranged in the first threaded hole and is in threaded connection with the first threaded hole, a first gear is arranged at the other end of the first adjusting rod, the first rack is vertically arranged, the upper end of the first rack is fixed at one end of the adjusting connecting plate, and the lower end of the first rack is connected with;

the second rotating head is arranged at the other end of the adjusting plate and is rotationally connected with the adjusting plate, a second threaded hole is formed in the second rotating head, one end of a second adjusting rod is arranged in the second threaded hole and is in threaded connection with the second threaded hole, a second gear is arranged at the other end of the second adjusting rod, a second rack is vertically arranged, the upper end of the second rack is fixed at the other end of the adjusting connecting plate, the lower end of the second rack is connected with the second adjusting rod gear through the second gear, and the rotating direction of threads in the second threaded hole is opposite to that of threads in the first threaded hole;

the adjusting cylinder is installed on the adjusting mounting plate, adjusting mounting plate and frame fixed connection, adjust the vertical placing of telescopic link and the lower extreme in the cylinder and rather than swing joint, adjust telescopic link upper end and adjusting connecting plate fixed connection.

The adjusting cylinder drives the adjusting telescopic rod to move up and down so as to drive the first rack and the second rack to move up and down and further drive the first adjusting rod and the second adjusting rod to rotate simultaneously, so that one of the two adjusting rods is screwed into the corresponding rotating head, and the other adjusting rod is screwed out of the corresponding rotating head, so that the included angle of the two fourth rotating rods is changed, and the angle of the second sorting mechanism is adjusted according to actual needs; increase angle adjustment mechanism has further improved nature controlled and convenience, can adjust the size classification of building stones according to actual need.

Further, the detection mechanism comprises a first slide rail, a first lead screw seat, a first detection motor, a first slide block, a detection mounting plate, a second slide block, a second slide rail, a second lead screw seat and a second detection motor, wherein the first slide rail is horizontally mounted on the upper part of the detection support, a first U-shaped groove is formed in the first slide rail, the first lead screw is mounted in the first U-shaped groove through the first lead screw seat, the first detection motor is mounted on the first slide rail, an output shaft of the first detection motor is connected with one end of the first lead screw, the first slide block is slidably connected with the first slide rail, a first threaded through hole is formed in the first slide block, and the first lead screw penetrates through the first threaded through hole and is in threaded connection with the first slide block;

the second slider is installed on first slider through detecting the mounting panel, the vertical placing of second slide rail and with second slider sliding connection, be equipped with second U type groove on the second slide rail, the second lead screw passes through the second lead screw seat and installs at second U type inslot, the second detects the motor and installs on the second slide rail, just the second detects motor output shaft and is connected with second lead screw one end, be equipped with second screw through-hole on the second slider, the second lead screw pass second screw through-hole with second slider threaded connection, metal detection instrument and detection signal processor all install on the second slide rail.

Starting the second detection motor, and driving a second screw rod to rotate through the second detection motor so as to drive the second slide rail and the metal detector to move up and down along the vertical direction, so that the height of the metal detector is adjusted; the height of the metal detector is adjusted according to the maximum height of the stone, the height from the metal detector to the conveying mechanism is 8-10 cm added to the maximum height of the stone, and the height can ensure the detection accuracy of the metal detector and has a larger detection range; meanwhile, the first detection motor is started and changes the rotation direction at regular time, the first screw rod is driven to rotate through the first detection motor, so that the second slide block is driven to move back and forth along the horizontal direction, and the detection path of the metal detector on the conveying mechanism is a continuous S-shaped path; the detection range of the metal detector is further expanded, the detection efficiency is improved, the transmission speed of the conveying mechanism is increased, and the overall working efficiency is improved.

Furthermore, the number of the second screening mechanisms is two, the two second screening mechanisms have the same structure and are symmetrically distributed, and the symmetry plane of the second screening mechanisms is the symmetry plane of the first screening mechanism.

When the metal detector detects that the stone contains metal components, the metal detector sends out signals containing the time for detecting the metal components and the left and right position information of the metal components on the conveying mechanism; after the screening cylinder receives the signal, judge the position about metal composition on conveying mechanism through the signal, only open in two second screening mechanisms with the corresponding screening cylinder in metal position, make the returning face plate inclines to the rear end, little volume metal and the little volume stone that is stained with the metal pass through the returning face plate landing is to second screening mechanism rear end below, and two second screening mechanisms are controlled respectively, can reduce not contain the building stones of metal and enter into the screening region who contains metal building stones, have reduced "accidental injury", have improved metal screening precision, have improved screening efficiency simultaneously.

Furthermore, the detection mechanism also comprises a detection sliding block, the detection bracket is a U-shaped bracket, the opening of the detection bracket is downward, and the detection sliding block is arranged at the lower end of the detection bracket;

the detection slide rails are arranged on two sides of the conveying mechanism, and the detection support is connected with the detection slide rails in a sliding mode through the detection slide blocks.

According to the difference of stone throwing equipment at the front end of the device, the detection slide block is in sliding connection with the detection slide rail, and the position of the detection mechanism on the conveying mechanism is adjusted, so that stone throwing equipment with different sizes can put stone on the input end of the conveying mechanism; the adaptability and the operability are improved, and the working range and the application occasion are enlarged.

The use method of the screening device for the jaw crusher comprises the following steps:

s1, adjusting the position of a detection mechanism, wherein the detection slide block can be slidably connected with a detection slide rail according to different stone throwing devices at the front end of the device, and adjusting the position of the detection mechanism on a conveying mechanism to enable the stone throwing devices with different sizes to put stone on the input end of the conveying mechanism;

s2, adjusting the height of the metal detector according to the maximum height of the stone, wherein the distance between the metal detector and the conveying mechanism is the sum of the maximum height of the stone and 8-10 cm, and the method specifically comprises the following steps:

starting the second detection motor, and driving a second screw rod to rotate through the second detection motor so as to drive the second slide rail and the metal detector to move up and down along the vertical direction, so that the height of the metal detector is adjusted;

s3, carrying out metal detection and signal transmission, wherein stone sequentially passes below a metal detector under the transportation of the conveying mechanism, the first detection motor is started and changes the rotation direction at regular time, the first detection motor drives a first screw rod to rotate so as to drive a second slide block to move back and forth along the horizontal direction, and the detection path of the metal detector on the conveying mechanism is a continuous S-shaped path;

when the metal detector detects that the stone contains metal components, the metal detector sends out a signal, the signal is transmitted to the first rotating rod motor and the screening cylinder through the detection signal processor, and the signal contains the time for detecting the metal components and the left and right position information of the metal components on the conveying mechanism;

s4, classifying for the first time, wherein under the condition that the metal detector does not detect the metal, the first rotating rod motor drives the first rotating rod to rotate, so that stone enters the first classifying mechanism from the front end of the first screening mechanism, the second rotating rod motor drives the second rotating rod and the third rotating rod to rotate simultaneously, the stone moves forwards under the rotation action of the second rotating rod, meanwhile, the stone is turned over by the third rotating rod in the process of moving from the close end to the far end, and the stone falls down and is separated from the close end to the far end successively according to the size of the stone;

the screening cylinder controls the extension of the screening telescopic rod, the connecting rod drives the turnover plate to turn over, so that the turnover plate is inclined towards the front end, and small-size stone falls below the front end of the second screening mechanism through the turnover plate;

s5, screening metal, wherein after the first rotating rod motor receives signals, the working modes of the first screening mechanism and the second screening mechanism are opposite to the working mode of S4, the first rotating rod motor rotates reversely, and the stone material adhered with the metal is discharged from the rear end of the first screening mechanism through the first rotating rod;

meanwhile, after the screening cylinders receive the signals, the left and right positions of the metal components on the conveying mechanism are judged through the signals, only one screening cylinder corresponding to the metal position in the two second screening mechanisms is started, the turnover plate is inclined towards the rear end, and small-volume metal and small-volume stone materials adhered with the metal slide down to the lower part of the rear end of the second screening mechanisms through the turnover plate;

s6, adjusting the angle of the second sorting mechanism, wherein the adjusting cylinder drives the adjusting telescopic rod to move up and down so as to drive the first rack and the second rack to move up and down, and further drives the first adjusting rod and the second adjusting rod to rotate simultaneously, so that one of the two adjusting rods is screwed into the corresponding rotating head, and the other adjusting rod is screwed out of the corresponding rotating head, thereby changing the included angle of the two fourth rotating rods and adjusting the angle of the second sorting mechanism according to actual needs;

and S7, classifying for the second time, wherein the large-volume stone materials which do not fall from the first classifying mechanism are continuously transmitted to the second classifying mechanism, the working principle of the second classifying mechanism is the same as that of the first classifying mechanism, and the large-volume stone materials fall from the front end to the rear end of the second classifying mechanism and are separated according to the size of the stone materials.

The method is convenient to operate, simple and understandable, and operators can be skillfully mastered through simple training; the metal adhered to the stone or embedded into the stone can be screened out through the first screening mechanism and the second screening mechanism, the metal screening success rate is high, and the screening is reliable; meanwhile, a second classification mechanism can be optionally additionally arranged, so that the operability and the practicability of the invention are improved.

Compared with the prior art, the invention has the following beneficial effects:

the equipment can classify the stones according to the size of the stones, and the jaw crusher processes the classified stones, so that the working efficiency is high, and the crushing quality is better; simultaneously, compare in the conventional technical scheme who adsorbs out with metal from the building stones through magnet, this device can sieve the metal of adhesion on the building stones, and the metal sieve removes the success rate height, does not receive the hindrance influence of building stones.

Drawings

FIG. 1 is a schematic side view of a screening apparatus for a jaw crusher according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an embodiment of a screening apparatus for a jaw crusher according to the present invention;

FIG. 3 is a schematic top view of a screening apparatus for a jaw crusher according to an embodiment of the present invention;

FIG. 4 is a schematic view of a portion of the enlarged structure at A in FIG. 3;

FIG. 5 is a schematic perspective view (view one) of a detecting mechanism in an embodiment of a screening apparatus for a jaw crusher according to the present invention;

FIG. 6 is a schematic perspective view (view two) of a detecting mechanism in an embodiment of a screening apparatus for a jaw crusher according to the present invention;

FIG. 7 is a schematic perspective view of two second screening mechanisms in an embodiment of the screening apparatus for a jaw crusher according to the present invention;

fig. 8 is a schematic perspective view of an angle adjusting unit in an embodiment of a screening apparatus for a jaw crusher according to the present invention.

Reference numerals in the drawings of the specification include:

the device comprises a detection mechanism 1, a detection bracket 101, a detection slide block 102, a first slide rail 103, a first screw rod 104, a first screw rod seat 105, a first detection motor 106, a first slide block 107, a detection mounting plate 108, a second slide block 109, a second slide rail 110, a second screw rod 111, a second screw rod seat 112, a second detection motor 113, a metal detector 114, a detection signal processor 115, a conveying mechanism 2 and a detection slide rail 201;

the screening device comprises a first screening mechanism 3, a first rotating rod 301, a first twisted piece 302, a first rotating rod seat 303 and a first rotating rod motor 304;

the screening device comprises a second screening mechanism 4, a screening cylinder 401, a screening mounting plate 402, a screening telescopic rod 403, a connecting seat 404, a connecting rod 405, a turnover rod 406, a turnover plate 407 and a turnover rod seat 408;

a first sorting mechanism 5, a second rotating rod 511, a second twisted piece 512, a second rotating rod seat 513, a second rotating rod motor 514, a third rotating rod 521, a third twisted piece 522 and a third rotating rod seat 523;

a second sorting mechanism 6, a fourth rotating rod 611, a fourth twisted piece 612, a fourth rotating rod seat 613 and a fourth rotating rod motor 614;

the adjusting mechanism 7, the adjusting plate 71, the first adjusting rod 72, the first rotating head 721, the first rack 722, the second adjusting rod 73, the second rotating head 731, the second rack 732, the adjusting connecting plate 74, the adjusting telescopic rod 75, the adjusting cylinder 76, and the adjusting mounting plate 77.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described in conjunction with the accompanying drawings and examples:

example one

As shown in fig. 1-8, a screening device for a jaw crusher comprises a detection mechanism 1, a conveying mechanism 2, a first screening mechanism 3, a first sorting mechanism 5 and a frame, wherein one end of the conveying mechanism 2 is an input end, the other end of the conveying mechanism is an output end, the first screening mechanism 3 is arranged behind the output end of the conveying mechanism 2, one end of the first screening mechanism 3 is a non-ferrous end, the other end of the first screening mechanism 3 is a ferrous end, and the conveying mechanism 2, the first screening mechanism 3 and the first sorting mechanism 5 are all mounted on the frame;

the detection mechanism 1 comprises a detection bracket 101, a metal detector 114 and a detection signal processor 115, the detection bracket 101 is arranged above the conveying mechanism 2, the metal detector 114 and the detection signal processor 115 are both arranged on the detection bracket 101, the stone to be processed is placed on the conveying mechanism 2 through an input end, and the stone to be processed passes below the metal detector 114;

the first sorting mechanism 5 further comprises two second swing rods 511 and two second swing rod motors 514, the two second swing rods 511 are horizontally arranged in a splayed shape, the end, close to the first sorting mechanism 3, of each second swing rod 511 is located behind the end, not containing iron, of the first sorting mechanism 3, second twisted pieces 512 wound uniformly and spirally are arranged on the second swing rods 511, each second swing rod 511 is mounted on the rack through two second swing rod seats 513, and one end of each second swing rod 511 is connected with an output shaft of one second swing rod motor 514.

The stone is thrown onto the conveying mechanism 2 through stone throwing equipment at the front end of the device, the stone sequentially passes below the metal detector 114 under the transportation of the conveying mechanism 2, the metal detector 114 detects metal of the stone, when the metal detector 114 detects that the stone contains metal components, the metal detector 114 sends out a signal and transmits the signal to the first screening mechanism 3 through the detection signal processor 115, the signal contains time information of the detected metal components, and the time of sending out a screening instruction by the first screening mechanism 3 is controlled through the speed transmitted by the conveying mechanism 2, so that the stone with the metal components is screened; for example, if it is obtained by calculating the speed of the conveyor 2 and the distance of the stone from the metal detector 114 to the first screening mechanism 3 that 5 seconds are required for the process, the time for the first screening mechanism 3 to issue the screening instruction is 4 seconds after the metal detector 114 issues the signal, and 1 second of the phase difference is the corresponding time of the first screening mechanism 3;

when the metal detector 114 does not detect the metal in the working condition, the stone is conveyed to the first sorting mechanism 5 by the first screening mechanism 3, the second rotating rod motor 514 drives the second rotating rod 511 to rotate, the stone moves forwards under the rotating action of the second rotating rod 511, and the stone is sorted according to the volume of the stone, so that the jaw crusher can process stones with different sizes respectively. The equipment can classify the stones according to the size of the stones, and the jaw crusher processes the classified stones, so that the working efficiency is high, and the crushing quality is better; simultaneously, compare in the conventional technical scheme who adsorbs out with metal from the building stones through magnet, this device can sieve the metal of adhesion on the building stones, and the metal sieve removes the success rate height, does not receive the hindrance influence of building stones.

As a preferred scheme, the first screening mechanism 3 further includes two first rotating rods 301 and two first rotating rod motors 304, the two first rotating rods 301 are parallel to each other and horizontally disposed, first twisted pieces 302 uniformly spirally wound are disposed on the first rotating rods 301, each first rotating rod 301 is mounted on the rack through two first rotating rod seats 303, and one end of each first rotating rod 301 is connected to an output shaft of one first rotating rod motor 304.

When the metal detector 114 does not detect metal, the first rotating rod motor 304 drives the first rotating rod 301 to rotate, so that stone enters the first sorting mechanism 5 from the front end of the first screening mechanism 3; when the metal detector 114 detects metal, the first swing arm motor 304 receives a signal from the signal processor 115 and rotates in a reverse direction, so that the metal-attached stone is discharged from the rear end of the first screening mechanism 3 through the first swing arm 301. The mechanism not only can stably convey stones from the conveying mechanism 2 to the two first rotating rods 301, but also can stably screen out large-volume metal stones, and is high in safety and reliability.

Preferably, the first sorting mechanism 5 further includes two third rotating rods 521, the two third rotating rods 521 are horizontally placed in a splayed shape and are disposed between the two second rotating rods 511, each third rotating rod 521 is parallel to one second rotating rod 511 adjacent thereto, third twisted pieces 522 uniformly spirally wound are disposed on the third rotating rods 521, each third rotating rod 521 is mounted on the rack through two third rotating rod seats 523, and one end of each third rotating rod 521 and one end of each second rotating rod 511 are connected to an output shaft of one second rotating rod motor 514 together.

The rotating speeds of the third rotary rod 521 and the second rotary rod 511 are the same, the pitch of the third twisted piece 522 is 2 to 3 times of that of the second twisted piece 512, when stones enter the first sorting mechanism 5 from the front end of the first screening mechanism 3, the second rotary rod motor 514 drives the second rotary rod 511 and the third rotary rod 521 to rotate at the same time, the stones are conveyed forwards under the rotating action of the second rotary rod 511, and meanwhile, the stones are turned over by the third rotary rod 521 in the process of moving from the near end to the far end, so that the stones with irregular shapes can be accurately sorted and fall off; the mechanism is simple in structure, high in classification efficiency, good in classification effect, not prone to damage, convenient to detach, overhaul and replace and long in service life.

As the preferred scheme, the screening machine also comprises a second screening mechanism 4, wherein the second screening mechanism 4 is arranged on the frame and is arranged below the first screening mechanism 3;

the second screening mechanism 4 further comprises a screening cylinder 401, a screening telescopic rod 403, a connecting rod 405, a turnover rod 406 and a turnover plate 407, the cylinder 401 is mounted on the frame through a screening mounting plate 402, one end of the screening telescopic rod 403 is inside the cylinder 401 and is in sliding connection with the cylinder 401, the other end of the screening telescopic rod 403 is movably connected with one end of the connecting rod 405 through a connecting seat 404, the other end of the connecting rod 405 is fixedly connected with the turnover rod 406, the turnover rod 406 is perpendicular to the first rotary rod 301 and is mounted on the frame through two turnover rod seats 408, and one side of the turnover plate 407 is fixed on the turnover rod 406.

When the metal detector 114 detects metal, the detection signal processor 115 transmits a signal containing metal to the first rotating rod motor 304 and also transmits the signal to the screening cylinder 401, the screening cylinder 401 and the first rotating rod motor 304 simultaneously send out a screening instruction, after the screening cylinder 401 receives the signal, the screening cylinder 401 controls the shortening of the screening telescopic rod 403, the connecting rod 405 drives the turnover plate 407 to turn over, so that the turnover plate 407 inclines towards the rear end, and small-volume metal and small-volume stone adhered with metal slide down to the lower part of the rear end of the second screening mechanism 4 through the turnover plate 407;

when the metal detector 114 does not detect metal, the screening cylinder 401 controls the extension of the screening telescopic rod 403, the connecting rod 405 drives the turnover plate 407 to turn over, so that the turnover plate 407 inclines towards the front end, and small-volume stone falls below the front end of the second screening mechanism 4 through the turnover plate 407; this mechanism can be to partial small-size building stones, or the metal that exists alone, and it is high to sieve and metal screening success rate, does not receive the hindrance influence of building stones.

Preferably, the automatic sorting machine further comprises a second sorting mechanism 6, wherein the second sorting mechanism 6 is arranged behind the first sorting mechanism 5 and is installed on the rack;

the second sorting mechanism 6 further includes a fourth rotating rod 611 and two fourth rotating rod motors 614, the two fourth rotating rods 611 are horizontally disposed in a shape like a Chinese character 'ba', the proximal ends of the two fourth rotating rods 611 are located behind the distal ends of the two second rotating rods 511, the fourth rotating rods 611 are provided with fourth twisted pieces 612 which are uniformly spirally wound, each fourth rotating rod 611 is installed on the rack through two fourth rotating rod seats 613, and one end of each fourth rotating rod 611 is connected with an output shaft of one fourth rotating rod motor 614.

The large-volume stones which do not fall from the first sorting mechanism 5 are continuously transferred to the second sorting mechanism 6, the working principle of the second sorting mechanism 6 is the same as that of the first sorting mechanism 5, and the stones fall and are separated from the front end to the rear end of the second sorting mechanism 6 from small to large according to the size of the stones. The second sorting mechanism 6 can be additionally arranged at the rear end of the first sorting mechanism 5, and can also be optionally not additionally arranged, so that the adaptability of the device is improved, the sorting working range is enlarged, and the sorting precision is higher.

Example two

As a further improvement of the previous embodiment, as shown in fig. 1 to 8, a screening device for a jaw crusher includes a detection mechanism 1, a conveying mechanism 2, a first screening mechanism 3, a first sorting mechanism 5 and a frame, wherein one end of the conveying mechanism 2 is an input end, the other end is an output end, the first screening mechanism 3 is disposed behind the output end of the conveying mechanism 2, one end of the first screening mechanism 3 is an end without iron content, the other end is an end with iron content, and the conveying mechanism 2, the first screening mechanism 3 and the first sorting mechanism 5 are all mounted on the frame;

under the working condition that the metal detector 114 does not detect metal, the stone is conveyed to the first sorting mechanism 5 by the first screening mechanism 3 and sorted according to the volume of the stone, so that the jaw crusher can process the stones with different sizes respectively. The equipment can classify the stones according to the size of the stones, and the jaw crusher processes the classified stones, so that the working efficiency is high, and the crushing quality is better; simultaneously, compare in the conventional technical scheme who adsorbs out with metal from the building stones through magnet, this device can sieve the metal of adhesion on the building stones, and the metal sieve removes the success rate height, does not receive the hindrance influence of building stones.

The stones enter the first sorting mechanism 5 from the front end of the first screening mechanism 3, the second rotating rod motor 514 drives the second rotating rod 511 to rotate, the stones are conveyed forwards under the rotation action of the second rotating rod 511, and fall and are separated from the near end to the far end from small to large according to the size of the stones; the mechanism is simple in structure, high in classification efficiency, good in classification effect, not prone to damage, convenient to detach, overhaul and replace and long in service life.

As a preferred scheme, the automatic sorting machine further comprises an angle adjusting mechanism 7, wherein the angle adjusting mechanism 7 consists of two symmetrically distributed angle adjusting units, the two angle adjusting units are arranged on two sides of the second sorting mechanism 6, and the second sorting mechanism 6 is arranged on the rack through the angle adjusting mechanism 7;

the angle adjusting unit further comprises an adjusting plate 71, a first adjusting rod 72, a first rotating head 721, a first rack 722, a second adjusting rod 73, a second rotating head 731, a second rack 732, an adjusting connecting plate 74, an adjusting telescopic rod 75, an adjusting cylinder 76 and an adjusting mounting plate 77, wherein the adjusting plate 71 is a strip-shaped plate and is horizontally arranged, the first rotating head 721 is installed at one end of the adjusting plate 71 and is rotatably connected with the adjusting plate, a first threaded hole is formed in the first rotating head 721, one end of the first adjusting rod 72 is arranged in the first threaded hole and is in threaded connection with the first threaded hole, a first gear is installed at the other end of the first adjusting rod 72, the first rack 722 is vertically arranged, the upper end of the first rack 722 is fixed at one end of the adjusting connecting plate 74, and the lower end of;

the second rotating head 731 is mounted at the other end of the adjusting plate 71 and is rotationally connected with the other end of the adjusting plate, a second threaded hole is formed in the second rotating head 731, one end of a second adjusting rod 73 is arranged in the second threaded hole and is in threaded connection with the second threaded hole, a second gear is mounted at the other end of the second adjusting rod 73, a second rack 732 is vertically placed, the upper end of the second rack 732 is fixed at the other end of the adjusting connecting plate 74, the lower end of the second rack 732 is in gear connection with the second adjusting rod 73 through the second gear, and the rotation direction of threads in the second threaded hole is opposite to;

adjusting cylinder 76 installs on adjusting the mounting panel 77, adjusts mounting panel 77 and frame fixed connection, adjusts telescopic link 75 vertical placing and the lower extreme in cylinder 76 and rather than swing joint, adjusts telescopic link 75 upper end and adjusting connecting plate 74 fixed connection.

The adjusting cylinder 76 drives the adjusting telescopic rod 75 to move up and down, so as to drive the first rack 722 and the second rack 732 to move up and down, further drive the first adjusting rod 72 and the second adjusting rod 73 to rotate simultaneously, so that one of the two adjusting rods is screwed into the corresponding rotating head, and the other adjusting rod is screwed out of the corresponding rotating head, so as to change the included angle of the two fourth rotating rods 611, and adjust the angle of the second sorting mechanism 6 according to actual needs; increase angle adjustment mechanism 7 and further improved nature controlled and convenience, can adjust the size classification of building stones according to actual need.

As a preferred scheme, the detection mechanism 1 further includes a first slide rail 103, a first lead screw 104, a first lead screw seat 105, a first detection motor 106, a first slider 107, a detection mounting plate 108, a second slider 109, a second slide rail 110, a second lead screw 111, a second lead screw seat 112 and a second detection motor 113, the first slide rail 103 is horizontally mounted on the upper portion of the detection support 101, a first U-shaped groove is formed in the first slide rail 103, the first lead screw 104 is mounted in the first U-shaped groove through the first lead screw seat 105, the first detection motor 106 is mounted on the first slide rail 103, an output shaft of the first detection motor 106 is connected with one end of the first lead screw 104, the first slider 107 is slidably connected with the first slide rail 103, a first threaded through hole is formed in the first slider 107, and the first lead screw 104 passes through the first threaded through hole and is in threaded connection with the first slider 107;

the second slider 109 is installed on the first slider 107 through detecting the mounting panel 108, the second slide rail 110 is vertically placed and is slidably connected with the second slider 109, be equipped with second U type groove on the second slide rail 110, the second lead screw 111 is installed in second U type groove through second lead screw seat 112, second detection motor 113 is installed on the second slide rail 110, and second detection motor 113 output shaft is connected with second lead screw 111 one end, be equipped with second screw through-hole on the second slider 109, second lead screw 111 passes second screw through-hole and second slider 109 threaded connection, metal detector 114 and detection signal processor 115 are all installed on the second slide rail 110.

Starting the second detection motor 113, and driving the second screw rod 111 to rotate through the second detection motor 113, so as to drive the second slide rail 110 and the metal detector 114 to move up and down along the vertical direction, thereby realizing height adjustment of the metal detector 114; the height of the metal detector 114 is adjusted according to the maximum height of the stone, and the height of the metal detector 114 from the conveying mechanism 2 is the maximum height of the stone plus 8-10 cm, so that the detection accuracy of the metal detector 114 can be ensured, and a larger detection range can be realized; meanwhile, the first detection motor 106 is started and changes the rotation direction at regular time, the first lead screw 104 is driven to rotate by the first detection motor 106, so that the second slide block 109 is driven to move back and forth along the horizontal direction, and the detection path of the metal detector 114 on the conveying mechanism 2 is a continuous S-shaped path; the detection range of the metal detector 114 is further expanded, the detection efficiency is improved, the transmission speed of the conveying mechanism 2 is increased, and the overall working efficiency is improved.

Preferably, the number of the second screening mechanisms 4 is two, the two second screening mechanisms 4 have the same structure and are symmetrically distributed, and the symmetry plane of the two second screening mechanisms 4 is the symmetry plane of the first screening mechanism 3.

When the metal detector 114 detects that the stone contains metal components, the metal detector 114 sends out a signal containing the time when the metal components are detected and the left and right position information of the metal components on the conveying mechanism 2; after the screening cylinder 401 receives the signal, judge the left and right positions of metal component on conveying mechanism 2 through the signal, only open two second screening mechanisms 4 in with the corresponding screening cylinder 401 in metal position, make returning face plate 407 slope to the rear end, little volume metal and the little volume stone that is stained with the metal pass through returning face plate 407 landing to second screening mechanism 4 rear end below, two second screening mechanisms 4 are controlled respectively, can reduce not contain the stone material of metal and enter into the screening region who contains the metal stone material, reduced "accidental injury", improved metal screening precision, the efficiency of screening is improved simultaneously.

Preferably, the detection mechanism 1 further comprises a detection slide block 102, the detection bracket 101 is a U-shaped bracket with a downward opening, and the detection slide block 102 is installed at the lower end of the detection bracket 101;

the two sides of the conveying mechanism 2 are provided with detection slide rails 201, and the detection support 101 is connected with the detection slide rails 201 in a sliding manner through the detection slide blocks 102.

According to the difference of stone throwing equipment at the front end of the device, the detection slide block 102 is connected with the detection slide rail 201 in a sliding manner, and the position of the detection mechanism 1 on the conveying mechanism 2 is adjusted, so that the stone throwing equipment with different sizes can put stones on the input end of the conveying mechanism 2; the adaptability and the operability are improved, and the working range and the application occasion are enlarged.

The advantages of the second embodiment over the first embodiment are:

the invention in the second embodiment increases the adaptability and operability, and enlarges the working range and the application occasion; the metal screening precision is improved, and the screening efficiency is improved; the detection range of the metal detector 114 is further expanded, the detection efficiency is improved, the transmission speed of the conveying mechanism 2 is increased, and the overall working efficiency is improved; increase angle adjustment mechanism 7 and further improved nature controlled and convenience, can adjust the size classification of building stones according to actual need.

s1, adjusting the position of the detection mechanism 1, and according to the difference of stone throwing equipment at the front end of the device, the detection slide rail 201 can be slidably connected through the detection slide block 102, and the position of the detection mechanism 1 on the conveying mechanism 2 is adjusted, so that the stone throwing equipment with different sizes can put stones on the input end of the conveying mechanism 2;

s2, adjusting the height of the metal detector 114 according to the maximum height of the stone, wherein the height of the metal detector 114 from the conveying mechanism 2 is the sum of the maximum height of the stone and 8-10 cm, and the method specifically comprises the following steps:

starting the second detection motor 113, and driving the second screw rod 111 to rotate through the second detection motor 113, so as to drive the second slide rail 110 and the metal detector 114 to move up and down along the vertical direction, thereby realizing height adjustment of the metal detector 114;

s3, metal detection and signal transmission, wherein stone sequentially passes below the metal detector 114 under the transportation of the conveying mechanism 2, the first detection motor 106 is started and changes the rotation direction at regular time, the first screw rod 104 is driven to rotate through the first detection motor 106, so that the second slide block 109 is driven to move back and forth along the horizontal direction, and the detection path of the metal detector 114 on the conveying mechanism 2 is a continuous S-shaped path;

when the metal detector 114 detects that the stone contains metal components, the metal detector 114 sends out a signal which contains the time when the metal components are detected and the left and right position information of the metal components on the conveying mechanism 2 and is transmitted to the first rotating rod motor 304 and the screening cylinder 401 through the detection signal processor 115;

s4, classifying for the first time, when the metal detector 114 does not detect the working condition of the metal, the first rotating rod motor 304 drives the first rotating rod 301 to rotate, so that the stone enters the first classifying mechanism 5 from the front end of the first screening mechanism 3, the second rotating rod motor 514 drives the second rotating rod 511 and the third rotating rod 521 to rotate at the same time, the stone moves forwards under the rotation action of the second rotating rod 511, meanwhile, the stone is turned over by the third rotating rod 521 in the process of moving from the close end to the far end, and the stone falls and is separated from the close end to the far end according to the size of the stone;

the screening cylinder 401 controls the extension of the screening telescopic rod 403, the connecting rod 405 drives the turnover plate 407 to turn over, so that the turnover plate 407 inclines towards the front end, and small-volume stone falls below the front end of the second screening mechanism 4 through the turnover plate 407;

s5, screening metal, wherein after the first swing arm motor 304 receives the signal, the first screening mechanism 3 and the second screening mechanism 4 work in the opposite way to S4, and the first swing arm motor 304 rotates in the opposite direction, so that the stone material adhered with metal is discharged from the rear end of the first screening mechanism 3 through the first swing arm 301;

meanwhile, after the screening cylinder 401 receives the signal, the left and right positions of the metal components on the conveying mechanism 2 are judged through the signal, only one screening cylinder 401 corresponding to the metal position in the two second screening mechanisms 4 is started, the turnover plate 407 is inclined towards the rear end, and small-volume metal and small-volume stone adhered with the metal slide down to the lower part of the rear end of the second screening mechanisms 4 through the turnover plate 407;

s6, adjusting the angle of the second sorting mechanism 6, and the adjusting cylinder 76 drives the adjusting telescopic rod 75 to move up and down, so as to drive the first rack 722 and the second rack 732 to move up and down, and further drive the first adjusting rod 72 and the second adjusting rod 73 to rotate at the same time, so that one of the two adjusting rods is screwed into the corresponding rotating head, and the other adjusting rod is screwed out of the corresponding rotating head, so as to change the included angle of the two fourth rotating rods 611, and adjust the angle of the second sorting mechanism 6 according to actual needs;

and S7, classifying for the second time, wherein large-volume stones which do not fall from the first classifying mechanism 5 are continuously transmitted to the second classifying mechanism 6, the working principle of the second classifying mechanism 6 is the same as that of the first classifying mechanism 5, and the stones fall and are separated from the front end to the rear end of the second classifying mechanism 6 from small to large according to the size of the stones.

The method is convenient to operate, simple and understandable, and operators can be skillfully mastered through simple training; the metal adhered to the stone or embedded into the stone can be screened out through the first screening mechanism 3 and the second screening mechanism 4, the metal screening success rate is high, and the screening is reliable; meanwhile, the second sorting mechanism 6 can be optionally additionally arranged, so that the operability and the practicability of the invention are improved.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a sieving mechanism for jaw crusher which characterized in that: the device comprises a detection mechanism (1), a conveying mechanism (2), a first screening mechanism (3), a first classification mechanism (5) and a rack, wherein one end of the conveying mechanism (2) is an input end, the other end of the conveying mechanism is an output end, the first screening mechanism (3) is arranged behind the output end of the conveying mechanism (2), one end of the first screening mechanism (3) is a non-iron-containing end, the other end of the first screening mechanism is an iron-containing end, and the conveying mechanism (2), the first screening mechanism (3) and the first classification mechanism (5) are all installed on the rack;

the detection mechanism (1) comprises a detection support (101), a metal detector (114) and a detection signal processor (115), the detection support (101) is installed above the conveying mechanism (2), the metal detector (114) and the detection signal processor (115) are installed on the detection support (101), stone to be processed is placed on the conveying mechanism (2) through an input end, and the stone to be processed passes below the metal detector (114);

first classification mechanism (5) includes two second swing arms (511) and two second swing arm motors (514) again, two second swing arm (511) are "eight" font level and place, two the end that is close to of second swing arm (511) is at the non-iron end rear of first screening mechanism (3), be equipped with even spiral winding's second twisted piece (512) on second swing arm (511), every second swing arm (511) are installed in the frame through two second swing arm seats (513), and every the one end of second swing arm (511) and the output shaft of a second swing arm motor (514).

2. The screening apparatus of claim 1, wherein: first screening mechanism (3) include two first swing arms (301) and two first swing arm motor (304) again, two first swing arm (301) are parallel to each other and the level is placed, be equipped with first twisted blade (302) that even spiral wound on first swing arm (301), every first swing arm (301) are installed in the frame through two first swing arm seats (303), and every the one end of first swing arm (301) and the output shaft of a first swing arm motor (304).

3. The screening apparatus for a jaw crusher of claim 2, wherein: the first classification mechanism (5) further comprises two third rotary rods (521), the two third rotary rods (521) are horizontally placed in a splayed shape and are arranged between the two second rotary rods (511), each third rotary rod (521) is parallel to one adjacent second rotary rod (511), third twisted pieces (522) which are uniformly spirally wound are arranged on the third rotary rods (521), each third rotary rod (521) is installed on the rack through two third rotary rod seats (523), and one end of each third rotary rod (521) and one end of each second rotary rod (511) are connected with an output shaft of one second rotary rod motor (514) together.

4. The screening apparatus of claim 3, wherein: the screening machine further comprises a second screening mechanism (4), wherein the second screening mechanism (4) is installed on the rack and is arranged below the first screening mechanism (3);

second screening mechanism (4) is including screening cylinder (401), screening telescopic link (403), connecting rod (405), upset pole (406) and returning face plate (407) again, cylinder (401) is installed in the frame through screening mounting panel (402), screening telescopic link (403) one end inside cylinder (401) and rather than sliding connection, screening telescopic link (403) other end passes through connecting seat (404) and connecting rod (405) one end swing joint, connecting rod (405) other end and upset pole (406) fixed connection, upset pole (406) are perpendicular with first bull stick (301) and are installed in the frame through two upset pole seats (408), returning face plate (407) one side is fixed on upset pole (406).

5. The screening apparatus of claim 4, wherein: the automatic sorting machine further comprises a second sorting mechanism (6), wherein the second sorting mechanism (6) is arranged behind the first sorting mechanism (5) and is installed on the rack;

the second classification mechanism (6) comprises a fourth rotating rod (611) and two fourth rotating rod motors (614), the two fourth rotating rods (611) are horizontally arranged in a splayed shape, the close ends of the two fourth rotating rods (611) are arranged behind the far ends of the two second rotating rods (511), fourth twisted pieces (612) which are uniformly spirally wound are arranged on the fourth rotating rods (611), each fourth rotating rod (611) is installed on the rack through two fourth rotating rod seats (613), and one end of each fourth rotating rod (611) is connected with an output shaft of one fourth rotating rod motor (614).

6. The screening apparatus of claim 5, wherein: the device is characterized by further comprising an angle adjusting mechanism (7), wherein the angle adjusting mechanism (7) is composed of two symmetrically distributed angle adjusting units, the two angle adjusting units are arranged on two sides of the second sorting mechanism (6), and the second sorting mechanism (6) is installed on the rack through the angle adjusting mechanism (7);

the angle adjusting unit also comprises an adjusting plate (71), a first adjusting rod (72), a first rotating head (721), a first rack (722), a second adjusting rod (73), a second rotating head (731), a second rack (732), an adjusting connecting plate (74), an adjusting telescopic rod (75), an adjusting cylinder (76) and an adjusting mounting plate (77), the adjusting plate (71) is a strip-shaped plate and is horizontally placed, the first rotating head (721) is arranged at one end of the adjusting plate (71) and is rotationally connected with the adjusting plate, a first threaded hole is formed in the first rotating head (721), one end of the first adjusting rod (72) is arranged in the first threaded hole and is in threaded connection with the first threaded hole, a first gear is arranged at the other end of the first adjusting rod (72), the first rack (722) is vertically arranged, the upper end of the first rack is fixed at one end of the adjusting connecting plate (74), the lower end of the first rack (722) is in gear connection with the first adjusting rod (72) through a first gear;

the second rotating head (731) is mounted at the other end of the adjusting plate (71) and is rotationally connected with the other end of the adjusting plate, a second threaded hole is formed in the second rotating head (731), one end of the second adjusting rod (73) is arranged in the second threaded hole and is in threaded connection with the second threaded hole, a second gear is mounted at the other end of the second adjusting rod (73), a second rack (732) is vertically placed, the upper end of the second rack (732) is fixed at the other end of the adjusting connecting plate (74), the lower end of the second rack (732) is in gear connection with the second adjusting rod (73) through the second gear, and the rotating direction of threads in the second threaded hole is opposite to that of threads in the first threaded;

adjusting cylinder (76) is installed on adjusting the mounting panel (77), adjusting mounting panel (77) and frame fixed connection, adjust vertical the placing of telescopic link (75) and the lower extreme in cylinder (76) and rather than swing joint, adjust telescopic link (75) upper end and adjusting connecting plate (74) fixed connection.

7. The screening apparatus of claim 6, wherein: the detection mechanism (1) further comprises a first slide rail (103), a first screw rod (104), a first screw rod seat (105), a first detection motor (106), a first slide block (107), a detection mounting plate (108), a second slide block (109), a second slide rail (110), a second screw rod (111), a second screw rod seat (112) and a second detection motor (113), wherein the first slide rail (103) is horizontally arranged at the upper part of the detection support (101), a first U-shaped groove is formed in the first slide rail (103), the first screw rod (104) is arranged in the first U-shaped groove through the first screw rod seat (105), the first detection motor (106) is arranged on the first slide rail (103), an output shaft of the first detection motor (106) is connected with one end of the first screw rod (104), the first slide block (107) is connected with the first slide rail (103) in a sliding manner, a first thread through hole is formed in the first slide block (107), the first screw rod (104) penetrates through the first threaded through hole to be in threaded connection with the first sliding block (107);

second slider (109) are installed on first slider (107) through detecting mounting panel (108), second slide rail (110) are vertical place and with second slider (109) sliding connection, be equipped with second U type groove on second slide rail (110), second lead screw (111) are installed at second U type inslot through second lead screw seat (112), second detection motor (113) are installed on second slide rail (110), just second detection motor (113) output shaft is connected with second lead screw (111) one end, be equipped with second screw through-hole on second slider (109), second lead screw (111) pass second screw through-hole with second slider (109) threaded connection, metal detector (114) and detection signal processor (115) are all installed on second slide rail (110).

8. The screening apparatus of claim 7, wherein: the number of the second screening mechanisms (4) is two, the second screening mechanisms (4) are identical in structure and are symmetrically distributed, and the symmetry plane of the second screening mechanisms is the symmetry plane of the first screening mechanism (3).

9. The screening apparatus of claim 8, wherein: the detection mechanism (1) further comprises a detection sliding block (102), the detection bracket (101) is a U-shaped bracket, the opening of the detection bracket is downward, and the detection sliding block (102) is installed at the lower end of the detection bracket (101);

the detection slide rails (201) are arranged on two sides of the conveying mechanism (2), and the detection support (101) is connected with the detection slide rails (201) in a sliding mode through the detection slide blocks (102).

10. The method of using a screening apparatus for a jaw crusher as claimed in claim 9, comprising the steps of:

s1, adjusting the position of the detection mechanism (1), and according to the difference of stone throwing equipment at the front end of the device, adjusting the position of the detection mechanism (1) on the conveying mechanism (2) by slidably connecting the detection slide block (102) with the detection slide rail (201) so that the stone throwing equipment with different sizes can put stone on the input end of the conveying mechanism (2);

s2, adjusting the height of the metal detector (114) according to the maximum height of the stone, wherein the height of the metal detector (114) from the conveying mechanism (2) is the sum of the maximum height of the stone and 8-10 cm, and the method specifically comprises the following steps:

the second detection motor (113) is started, the second screw rod (111) is driven to rotate through the second detection motor (113), so that the second slide rail (110) and the metal detector (114) are driven to move up and down along the vertical direction, and the height adjustment of the metal detector (114) is realized;

s3, metal detection and signal transmission, wherein stone sequentially passes below a metal detector (114) under the transportation of the conveying mechanism (2), the first detection motor (106) is started and changes the rotation direction at regular time, the first detection motor (106) drives the first screw rod (104) to rotate, so that the second slide block (109) is driven to move back and forth along the horizontal direction, and the detection path of the metal detector (114) on the conveying mechanism (2) is a continuous S-shaped path;

when the metal detector (114) detects that the stone contains metal components, the metal detector (114) sends out a signal, and the signal is transmitted to the first rotary rod motor (304) and the screening cylinder (401) through a detection signal processor (115), wherein the signal contains the time when the metal components are detected and the left and right position information of the metal components on the conveying mechanism (2);

s4, classifying for the first time, under the condition that the metal detector (114) does not detect the metal, the first rotating rod motor (304) drives the first rotating rod (301) to rotate, so that stone enters the first classifying mechanism (5) from the front end of the first screening mechanism (3), the second rotating rod motor (514) drives the second rotating rod (511) and the third rotating rod (521) to rotate simultaneously, the stone is moved forwards under the rotation action of the second rotating rod (511), meanwhile, the stone is turned over by the third rotating rod (521) in the process of moving from the close end to the far end, and the stone falls and is separated from the close end to the far end from the big end according to the size of the stone;

the screening cylinder (401) controls the extension of the screening telescopic rod (403), the connecting rod (405) drives the turnover plate (407) to turn over, so that the turnover plate (407) inclines towards the front end, and small-volume stones fall to the lower part of the front end of the second screening mechanism (4) through the turnover plate (407);

s5, screening metal, when the first rotating rod motor (304) receives the signal, the first screening mechanism (3) and the second screening mechanism (4) work in the opposite way of S4, the first rotating rod motor (304) rotates reversely, and the stone material adhered with metal is discharged from the rear end of the first screening mechanism (3) through the first rotating rod (301);

meanwhile, after the screening air cylinders (401) receive the signals, the left and right positions of the metal components on the conveying mechanism (2) are judged through the signals, only one screening air cylinder (401) corresponding to the metal position in the two second screening mechanisms (4) is started, the turnover plate (407) is inclined towards the rear end, and small-volume metal and small-volume stone materials adhered with the metal slide down to the lower part of the rear end of the second screening mechanisms (4) through the turnover plate (407);

s6, adjusting the angle of the second sorting mechanism (6), wherein the adjusting cylinder (76) drives the adjusting telescopic rod (75) to move up and down, so as to drive the first rack (722) and the second rack (732) to move up and down, further drive the first adjusting rod (72) and the second adjusting rod (73) to rotate simultaneously, so that one of the two adjusting rods is screwed into the corresponding rotating head, the other adjusting rod is screwed out of the corresponding rotating head, so as to change the included angle of the two fourth rotating rods (611), and adjust the angle of the second sorting mechanism (6) according to actual needs;

and S7, classifying for the second time, wherein large-volume stones which do not fall from the first classifying mechanism (5) are continuously transmitted to the second classifying mechanism (6), the working principle of the second classifying mechanism (6) is the same as that of the first classifying mechanism (5), and the stones fall from small to large from the front end to the rear end of the second classifying mechanism (6) and are separated according to the volume of the stones.