CN109675826A - A kind of dynamic radiation protector of the gangue based on photometric sorting technology - Google Patents

Abstract

The invention belongs to Ore separation device technical field, dynamic radiation protector of specifically a kind of gangue based on photometric sorting technology, including coal-storage pot, conveyer belt, luminous tube, puff prot and collecting tank；The conveyer belt is socketed on rotation roller surface；The protection location includes cylinder, slide bar, fixed plate, air bag, mobile bar and protective plate；The cleaning unit includes motor, worm screw, sliding block, impact head and control switch；Turbine is rotatably connected in the third cavity；The Wiper plate outer surface offers thread groove；The turbine upper surface is engaged with worm screw, and lower surface is engaged with the thread groove of Wiper plate；The present invention, protective plate is swung in coal gangues automation selection by protective unit, luminous tube is wrapped up close to the side of puff prot, hits luminous tube after preventing gangue surface particles and gangue from bouncing, it is rotated during by Wiper plate movement, luminous plate surface is cleared up.

Description

A kind of dynamic radiation protector of the gangue based on photometric sorting technology

Technical field

The invention belongs to Ore separation device technical field, specifically a kind of gangue, which is used, is based on photometric sorting technology Dynamic radiation protector.

Background technique

The mined coal without processing is referred to as raw coal, contains a certain proportion of spoil in raw coal.Spoil it is main Ingredient is rock, and density is big, and ash content is high, and calorific value is small, belongs to the impurity in coal, there is very important shadow to Coal Quality It rings.Therefore, coal gangues automation selection is indispensable link during coal production.

Sorting gangue mainly uses the methods of person, change choosing, magnetic separation, flotation, gravity treatment to sort in the prior art, general Store-through also has trial by general photometric sorter applied to ore point at present phenomena such as sorting at high cost, low efficiency, low precision Choosing, but existing photometric sorter be applied to ore sort when, luminous tube can not be effectively protected, in gangue During bouncing, gangue surface particles would generally hit luminous tube, lead to luminous tube damage, simultaneously luminous tube long-time service Afterwards, dust when coal gangues automation selection can be adhered to luminous pipe surface, manual cleaning after when cleaning is shut down, time-consuming to take Power, while production efficiency is influenced, and accumulation is easy to happen in gangue transportational process, cause to sort error in assorting room.

Summary of the invention

In order to make up for the deficiencies of the prior art, it solves to be knocked damage, luminous tube surfaces stick in luminous tube assorting room Dust, when manual cleaning, are time-consuming and laborious, influence to accumulate in production efficiency and gangue transportational process, influence asking for separating effect Topic, a kind of dynamic radiation protector of the gangue based on photometric sorting technology proposed by the present invention.

The technical solution adopted by the present invention to solve the technical problems is: a kind of gangue of the present invention, which is used, is based on light The dynamic radiation protector of electric sorting technology, including coal-storage pot, conveyer belt, luminous tube, puff prot and collecting tank；The conveying Band is socketed on rotation roller surface；The coal-storage pot is located above conveyer belt；The puff prot is located on the right side of conveyer belt；The collection Tank is located on the right side of puff prot；It is rod grounded that the coal-storage pot, rotating roller, puff prot and collecting tank pass through fixation；The collection The first fixed block of L shape is equipped on the right side of tank；The luminous tube is fixed on the first fixed block lower surface by the second fixed block, the One fixed block one end ground connection；Protection location is equipped in first fixed block；Cleaning unit is equipped in second fixed block；Work When making, gangue falls conveyor belt surface by coal-storage pot, is transported by conveyer belt to luminous tube, detects coal by luminous tube Spoil volume, to judge weight, gangue continues at transport to puff prot, and puff prot judges gangue by luminous tube Volume and quality make stress below gangue, fall to different collecting tanks to spray the gas of friction speed and quantity It is interior, realize sorting, protection location can protect luminous tube, and luminous tube is hit when preventing gangue from bouncing at puff prot, and cleaning is single Member can clear up luminous tube surface dirt.

Preferably, the first cavity is offered in first fixed block；The protection location is located in the first cavity；It is described Protection location includes cylinder, slide bar, fixed plate, air bag, mobile bar and protective plate；The cylinder is fixed on the first cavity inner wall, And cylinder offers air inlet；The extension end of the cylinder offers sliding slot；Described mobile bar one end penetrates in sliding slot, the other end It is fixed with fixed plate；The fixed plate circular design, is fixed on the first cavity inner wall, and the second cavity is offered in fixed plate； The air bag circular design, and be located in the second cavity；The mobile bar quantity is two, is located in the second cavity, and about gas Capsule symmetric design；One end of the mobile bar passes through spring and is fixed on balloon surface, and the other end both passes through the setting of the second cavity； The lower section fixed link is hinged with protective plate by oscillating rod；The protective plate cambered design, and protective plate left lateral sides are close to The setting of first cavity inner wall, and can be slided along the first cavity inner wall；It is offered in the extension end of the cylinder and mobile bar Guide groove；Guide groove connection cylinder interior and air bag, air inlet is by extraneous gas source feed, and the air demand and jet of air inlet The air capacity of mouth is directly proportional；When work, when puff prot jet, make inflation in cylinder, gas expands air bag, to make mobile bar It drives protective plate to move down, protects luminous tube, prevent from hitting luminous tube when gangue surface little particle is discarded, luminous tube is caused to damage It is bad.

Preferably, the cleaning unit includes motor, worm screw, sliding block, impact head and control switch；The top mobile bar The design of upper surface cambered surface, and the first cavity inner wall is fixed with contact, mobile bar can power after contacting contact for motor；Described second Fixed block lower surface opens up fluted；The luminous tube and motor are fixed in groove, and motor is located above luminous tube；It is described Worm screw one end is fixed on machine shaft, and the other end is rotationally connected with groove inner wall；The sliding block is slidably socketed in worm screw face, and Sliding block is screwed with screw thread in the inner wall that worm screw passes through place, and screw thread is engaged with worm screw；Third cavity is offered in the sliding block；Described Wiper plate is equipped in three cavitys；The Wiper plate circular ring shape design, and Wiper plate package setting luminous tube；Sliding block two sides side Face is fixed with impact head；The control switch quantity is two, is respectively fixedly connected in groove inner wall, can be hit and be corresponded to by impact head Control switch realizes rotating and reverse for motor, so that sliding block be made to move back and forth；When work, mobile bar contacts contact when mobile, For motor power supply, worm screw is rotated, so that sliding block be made to move back and forth, passes through Wiper plate in sliding block reciprocating movement for luminous tube Surface dirt cleaning, prevents sorting error.

Preferably, turbine is rotatably connected in the third cavity；The Wiper plate outer surface offers thread groove；It is described Turbine upper surface is engaged with worm screw, and lower surface is engaged with the thread groove of Wiper plate, so that Wiper plate be driven to rotate；The Wiper plate Inner wall is provided with a plurality of air holes；The extension end fixing sleeve of the cylinder is connected to stripper plate；It is straight that the guide groove diameter is less than air inlet Diameter；The first void space between the stomata connection stripper plate and fixed plate is connected to；When work, worm screw rotation passes through turbine Wiper plate rotation is driven, is rotated during Wiper plate is mobile to realize, cleaning efficiency is improved, simultaneously because air inlet diameter Greater than guide groove diameter, the extension end of cylinder is stretched out when inlet charge, to make stomata jet, the dust wiped out is cleared up, Reinforce cleaning efficiency simultaneously.

Preferably, the 4th cavity is offered in the conveyer belt；Gassy in 4th cavity；And the 4th in cavity It has been evenly arranged spring, can be elastic by spring and the 4th cavity cooperation enhancing conveyer belt, so that Piling of Gangue is prevented, it is not square Just it sorts；The conveyor belt surface is equipped with the protrusion being evenly arranged；The protrusion is made of soft elastic material；When work, coal When spoil falls to conveyor belt surface by coal-storage pot, by the cooperation of the 4th cavity, spring and protrusion, flick gangue, Piling of Gangue is prevented, can not be sorted.

Preferably, the rotating roller is made of the first switch block and the second switch block；Opening is offered in first switch block；Institute It states the second switch block to penetrate in opening, and passes through connected first switch block of spring in being open；First switch block and the second switch block are equal Truncated cone-shaped design prevents gangue unrestrained to make conveyer belt depression in centre；The opening can be supplied by external air source；Work When, it can be adjusted according to the difference of gangue quantity to gas supply in opening, so that rotating roller width is adjusted, and after adjusting, rotating roller Middle part is horizontal, gangue can be made more to disperse.

Beneficial effects of the present invention are as follows:

1. a kind of dynamic radiation protector of the gangue of the present invention based on photometric sorting technology, passes through setting Protective unit, puff prot jet when passing through coal gangues automation selection, to inflating in cylinder, gas enters air bag by guide groove, makes air bag Expansion swings protective plate to make mobile bar that protective plate be driven to move down, so that luminous tube be wrapped close to the side of puff prot It wraps up in, hits luminous tube after preventing gangue surface particles and gangue from bouncing, luminous tube is caused to damage.

2. a kind of dynamic radiation protector of the gangue of the present invention based on photometric sorting technology, passes through setting Unit is cleared up, during coal gangues automation selection, cylinder is supplied mobile bar is made to contact contact, be powered for motor, thus Realize that Wiper plate is mobile, cooperation turbine makes to rotate in Wiper plate moving process, clears up luminous plate surface, while can be to hair Light pipe surface is blown, and is cooled down while improving the efficiency of separation to luminous tube.

3. a kind of dynamic radiation protector of the gangue of the present invention based on photometric sorting technology, passes through setting 4th cavity and protrusion bounce dispersion when gangue being made to fall to conveyor belt surface, cooperate the adjusting of rotating roller width, prevent Gangue is accumulated in conveyor belt surface, influences coal gangues automation selection precision.

Detailed description of the invention

The present invention will be further explained below with reference to the attached drawings.

Fig. 1 is main view of the invention；

Fig. 2 is the cross-sectional view for clearing up unit；

Fig. 3 is the cross-sectional view of fixed plate；

Fig. 4 is the cross-sectional view of A-A in Fig. 2；

Fig. 5 is the partial sectional view of conveyer belt；

Fig. 6 is the cross-sectional view of rotating roller；

Fig. 7 is partial enlarged view at B in Fig. 1；

In figure: coal-storage pot 1, luminous tube 11, puff prot 12, collecting tank 13, the first fixed block 14, the second fixed block 15, One cavity 16, conveyer belt 2, the 4th cavity 21, raised 22, first switch block 23, the second switch block 24, opening 25, protection location 3, gas Cylinder 31, slide bar 32, fixed plate 33, air bag 34, mobile bar 35, protective plate 36, sliding slot 37, the second cavity 38, guide groove, cleaning unit 4, motor 41, worm screw 42, sliding block 43, impact head 44, control switch 45, third cavity 46, Wiper plate 47, turbine 48, stripper plate 49。

Specific embodiment

In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Specific embodiment is closed, the present invention is further explained.

As shown in Figures 1 to 7, dynamic radiation protection of a kind of gangue of the present invention based on photometric sorting technology Device, including coal-storage pot 1, conveyer belt 2, luminous tube 11, puff prot 12 and collecting tank 13；The conveyer belt 2 is socketed on rotating roller Surface；The coal-storage pot 1 is located at 2 top of conveyer belt；The puff prot 12 is located at 2 right side of conveyer belt；The collecting tank 13 is located at 12 right side of puff prot out；The coal-storage pot 1, rotating roller, puff prot 12 and collecting tank 13 are rod grounded by fixation；The collection The first fixed block 14 of L shape is equipped on the right side of tank 13；The luminous tube 11 is fixed on the first fixed block by the second fixed block 15 14 lower surfaces, 14 one end of the first fixed block ground connection；Protection location 3 is equipped in first fixed block 14；Second fixed block Cleaning unit 4 is equipped in 15；When work, gangue falls 2 surface of conveyer belt by coal-storage pot 1, is transported by conveyer belt 2 to luminous 11 lower section of pipe, detects gangue volume by luminous tube 11, to judge weight, gangue continues at transport to puff prot 12, Puff prot 12 judges that the volume and quality of gangue make to spray the gas of friction speed and quantity by luminous tube 11 Stress below gangue, falls in different collecting tanks 13, realizes sorting, and protection location 3 can protect luminous tube 11, prevent coal Luminous tube 11 is hit when spoil bounces at puff prot 12, cleaning unit 4 can clear up 11 surface dirt of luminous tube.

As one embodiment of the present invention, the first cavity 16 is offered in first fixed block 14；The protection Unit 3 is located in the first cavity 16；The protection location 3 includes cylinder 31, slide bar 32, fixed plate 33, air bag 34, mobile bar 35 With protective plate 36；The cylinder 31 is fixed on 16 inner wall of the first cavity, and cylinder 31 offers air inlet；The cylinder 31 is stretched Outlet offers sliding slot 37；Described 35 one end of mobile bar penetrates in sliding slot 37, and the other end is fixed with fixed plate 33；The fixed plate 33 circular designs are fixed on 16 inner wall of the first cavity, and the second cavity 38 is offered in fixed plate 33；34 circle of air bag is set Meter, and be located in the second cavity 38；35 quantity of mobile bar is two, is located in the second cavity 38, and symmetrical about air bag 34 Design；One end of the mobile bar 35 passes through spring and is fixed on 34 surface of air bag, and the other end both passes through the setting of the second cavity 38； The lower section fixed link is hinged with protective plate 36 by oscillating rod；36 cambered design of protective plate, and 36 left side side of protective plate The setting of 16 inner wall of the first cavity is close in face, and can slide along 16 inner wall of the first cavity；The extension end of the cylinder 31 and movement Guide groove is offered in bar 35；31 inside of guide groove connection cylinder and air bag 34, air inlet by extraneous gas source feed, and into The air demand of port is directly proportional to the air capacity of puff prot 12；When work, when 12 jet of puff prot, make inflation, gas in cylinder 31 Body expands air bag 34, to make mobile bar 35 that protective plate 36 be driven to move down, protects luminous tube 11, prevents small of gangue surface Luminous tube 11 is hit when grain is discarded, and luminous tube 11 is caused to damage.

As one embodiment of the present invention, the cleaning unit 4 includes motor 41, worm screw 42, sliding block 43, impact head 44 and control switch 45；Top 35 upper surface cambered surface of the mobile bar design, and 16 inner wall of the first cavity is fixed with contact, it is mobile Bar 35 can power after contacting contact for motor 41；Second fixed block, 15 lower surface opens up fluted；11 He of luminous tube Motor 41 is fixed in groove, and motor 41 is located at 11 top of luminous tube；Described 42 one end of worm screw is fixed on 41 shaft of motor, separately One end is rotationally connected with groove inner wall；The sliding block 43 is slidably socketed in 42 surface of worm screw, and sliding block 43 passes through place in worm screw 42 Inner wall be screwed with screw thread, screw thread is engaged with worm screw 42；Third cavity 46 is offered in the sliding block 43；In the third cavity 46 Equipped with Wiper plate 47；47 circular ring shape of the Wiper plate design, and the package setting luminous tube 11 of Wiper plate 47；43 two sides of sliding block Side is fixed with impact head 44；45 quantity of control switch is two, is respectively fixedly connected in groove inner wall, can pass through impact head 44 Corresponding control switch 45 is hit, realizes rotating and reverse for motor 41, so that sliding block 43 be made to move back and forth；When work, mobile bar 35 contact contact when mobile, power for motor 41, rotate worm screw 42, so that sliding block 43 be made to move back and forth, sliding block 43 is back and forth moved 11 surface dirt of luminous tube is cleared up by Wiper plate 47 during dynamic, prevents sorting error.

As one embodiment of the present invention, turbine 48 is rotatably connected in the third cavity 46；The Wiper plate 47 outer surfaces offer thread groove；48 upper surface of turbine is engaged with worm screw 42, and lower surface and the thread groove of Wiper plate 47 are nibbled It closes, so that Wiper plate 47 be driven to rotate；47 inner wall of Wiper plate is provided with a plurality of air holes；The extension end of the cylinder 31 is fixed It is socketed with stripper plate 49；The guide groove diameter is less than air inlet diameter；Between the stomata connection stripper plate 49 and fixed plate 33 16 space of the first cavity connection；When work, worm screw 42 is rotated, and drives Wiper plate 47 to rotate by turbine 48, to realize wiping It is rotated during wiping the movement of plate 47, improves cleaning efficiency, simultaneously because air inlet diameter is greater than guide groove diameter, inlet charge When cylinder 31 extension end stretch out, to make stomata jet, the dust wiped out is cleared up, while reinforcing cleaning efficiency.

As one embodiment of the present invention, the 4th cavity 21 is offered in the conveyer belt 2；4th cavity 21 Interior gassy；And the 4th has been evenly arranged spring in cavity 21, can pass through spring and the 4th cavity 21 cooperation enhancing conveyer belt 2 Elasticity, to prevent Piling of Gangue, it has not been convenient to sort；2 surface of conveyer belt is equipped with the protrusion 22 being evenly arranged；It is described convex 22 are played to be made of soft elastic material；When work, when gangue falls to 2 surface of conveyer belt by coal-storage pot 1, pass through the 4th sky The cooperation of chamber 21, spring and protrusion 22, flicks gangue, prevents Piling of Gangue, can not be sorted.

As one embodiment of the present invention, the rotating roller is made of the first switch block 23 and the second switch block 24；It is described Opening 25 is offered in first switch block 23；Second switch block 24 penetrates in opening 25, and in connected by spring in opening 25 First switch block 23；First switch block 23 and the equal truncated cone-shaped design of the second switch block 24, to make 2 depression in centre of conveyer belt, prevent Gangue is unrestrained；The opening 25 can be supplied by external air source；When work, it can be adjusted split according to the difference of gangue quantity Gas supply in mouth 25, to adjust rotating roller width, and after adjusting, level, can be such that gangue more disperses in the middle part of rotating roller.

When work, gangue falls 2 surface of conveyer belt by coal-storage pot 1, below the transport to luminous tube 11 of conveyer belt 2, Gangue volume is detected by luminous tube 11, to judge weight, gangue continues at transport to puff prot 12, and puff prot 12 is logical It crosses luminous tube 11 and judges the volume and quality of gangue, to spray the gas of friction speed and quantity, make below gangue Stress is fallen in different collecting tanks 13, realizes sorting, when 12 jet of puff prot, inflation, gas in cylinder 31 is made to make air bag 34 expansions protect luminous tube 11, while contact touching when the movement of mobile bar 35 to make mobile bar 35 that protective plate 36 be driven to move down Head is powered for motor 41, rotates worm screw 42, so that sliding block 43 be made to move back and forth, passes through wiping in 43 reciprocating movement of sliding block It wipes plate 47 to clear up 11 surface dirt of luminous tube, drives Wiper plate 47 to rotate by turbine 48 while worm screw 42 rotates, thus It realizes and is rotated during Wiper plate 47 is mobile, simultaneously because air inlet diameter is greater than guide groove diameter, cylinder when inlet charge 31 extension end is stretched out, to make stomata jet, the dust wiped out is cleared up, and gangue fallen to by coal-storage pot 1 it is defeated When sending 2 surface of band, by the cooperation of the 4th cavity 21, spring and protrusion 22, gangue is flicked, prevents Piling of Gangue, together When can adjust and be supplied in opening 25 according to the difference of gangue quantity, to adjust rotating roller width, and after adjusting, rotation It is horizontal in the middle part of roller, gangue can be made more to disperse.

The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle It is fixed.

Claims (6)

1. A dynamic ray protection device for coal gangue based on photoelectric separation technology, characterized in that: comprising a coal storage tank (1), a conveyor belt (2), a luminous tube (11), an air jet (12) and a collection tank (13); the conveyor belt (2) is sleeved on the surface of the rotating roller; the coal storage tank (1) is located above the conveyor belt (2); the air jet port (12) is located on the right side of the conveyor belt (2); The collection tank (13) is located on the right side of the air outlet (12); the coal storage tank (1), the rotating roller, the air injection port (12) and the collection tank (13) are all grounded through a fixed rod; the collection tank (13) An “L”-shaped first fixing block (14) is provided on the right side; the luminous tube (11) is fixed to the lower surface of the first fixing block (14) through the second fixing block (15), and the first One end of the fixing block (14) is grounded; the first fixing block (14) is provided with a protection unit (3); the second fixing block (15) is provided with a cleaning unit (4), and the protection unit (3) can be The luminous tube (11) is protected to prevent the coal gangue from hitting the luminous tube (11) when the coal gangue bounces at the air jet port (12), and the cleaning unit (4) can clean the dust on the surface of the luminous tube (11). 2 . The dynamic ray protection device for coal gangue based on photoelectric separation technology according to claim 1 , wherein a first cavity ( 16 ) is opened in the first fixed block ( 14 ); The protection unit (3) is located in the first cavity (16); the protection unit (3) includes a cylinder (31), a sliding rod (32), a fixing plate (33), an air bag (34), and a moving rod (35) ) and a protective plate (36); the cylinder (31) is fixedly connected to the inner wall of the first cavity (16), and the cylinder (31) is provided with an air inlet; the extending end of the cylinder (31) is provided with a sliding slot (37); one end of the moving rod (35) is inserted into the chute (37), and the other end is fixedly connected with a fixing plate (33); the fixing plate (33) has a circular design and is fixed to the first hollow The inner wall of the cavity (16) is provided with a second cavity (38) in the fixing plate (33); the airbag (34) is circular in design and is located in the second cavity (38); the moving rod (35) ) is two in number, located in the second cavity (38), and designed symmetrically with respect to the airbag (34); one end of the moving rod (35) is fixed to the surface of the airbag (34) through a spring, and the other end passes through the airbag (34) A second cavity (38) is provided; the fixing rod below is hinged with a protective plate (36) through a swing rod; the protective plate (36) is arc-shaped, and the left side of the protective plate (36) is close to the first cavity The inner wall of the cavity (16) is arranged and can slide along the inner wall of the first cavity (16); the extending end of the air cylinder (31) and the moving rod (35) are provided with guide grooves; the guide groove communicates with the air cylinder (31) Inside and the air bag (34), the air inlet is supplied with air from an external air source, and the air supply volume of the air inlet is proportional to the air volume of the air outlet (12). 3. A kind of dynamic ray protection device based on photoelectric separation technology for coal gangue according to claim 1, characterized in that: the cleaning unit (4) comprises a motor (41), a worm (42), a sliding block ( 43), the impact head (44) and the control switch (45); the upper surface of the moving rod (35) above is designed with an arc surface, and the inner wall of the first cavity (16) is fixedly connected with a contact, and the moving rod (35) contacts The motor (41) can be powered after the contact; a groove is formed on the lower surface of the second fixing block (15); the light-emitting tube (11) and the motor (41) are fixed in the groove, and the motor (41) ) is located above the luminous tube (11); one end of the worm (42) is fixedly connected to the rotating shaft of the motor (41), and the other end is rotatably connected to the inner wall of the groove; the slider (43) is slidably sleeved on the surface of the worm (42) , and the inner wall of the slider (43) where the worm (42) passes through is screwed with threads, and the threads are engaged with the worm (42); a third cavity (46) is opened in the slider (43); The three cavities (46) are provided with a wiping plate (47); the wiping plate (47) is annular in design, and the wiping plate (47) is wrapped with a light-emitting tube (11); the slider (43) is on both sides Impact heads (44) are fixedly connected to the sides; the number of control switches (45) is two, which are respectively fixed to the inner wall of the groove. the forward and reverse rotations, so that the slider (43) moves back and forth. 4. The dynamic ray protection device for coal gangue based on photoelectric separation technology according to claim 3, characterized in that: a turbine (48) is rotatably connected in the third cavity (46); The outer surface of the plate (47) is provided with a threaded groove; the upper surface of the turbine (48) is engaged with the worm (42), and the lower surface is engaged with the threaded groove of the wiping plate (47), thereby driving the wiping plate (47) to rotate; the The inner wall of the wiping plate (47) is provided with a plurality of air holes; the protruding end of the air cylinder (31) is fixedly sleeved with a pressing plate (49); the air holes communicate with the pressing plate (49) and the fixing plate (33). The first cavity (16) between them is spatially connected. 5 . The dynamic ray protection device for coal gangue based on photoelectric separation technology according to claim 1 , wherein a fourth cavity ( 21 ) is opened in the conveyor belt ( 2 ); The four cavities (21) are filled with gas; and springs are evenly arranged in the fourth cavity (21), and the elasticity of the conveyor belt (2) can be enhanced by the cooperation of the springs and the fourth cavity (21), thereby preventing the accumulation of coal gangue, It is inconvenient for sorting; the surface of the conveyor belt (2) is provided with evenly arranged protrusions (22); the protrusions (22) are made of soft elastic materials, which can disperse and bounce the coal gangue. 6. The dynamic ray protection device based on photoelectric separation technology for coal gangue according to claim 1, wherein the rotating roller is composed of a first rotating block (23) and a second rotating block (24) ; An opening (25) is provided in the first turning block (23); (23); the first turning block (23) and the second turning block (24) are both circular truncated designs, so that the middle of the conveyor belt (2) is recessed to prevent coal gangue from falling; the opening (25) can be used by external air The source of gas supply can realize the level of the middle of the rotating roller, which can make the coal gangue disperse.