CN111890563B

CN111890563B - Bucket elevator for concrete batching

Info

Publication number: CN111890563B
Application number: CN202010864929.4A
Authority: CN
Inventors: 唐俊栋; 韩培毅; 赵靖; 刘雁群
Original assignee: Shandong Huajue Concrete Co ltd
Current assignee: Shandong Huajue Concrete Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-09-14
Anticipated expiration: 2040-08-25
Also published as: CN111890563A

Abstract

The utility model relates to a concrete is bucket elevator for batching, belong to bucket elevator's technical field, it includes the casing, two cavitys have been seted up in the casing, respectively through first action wheel in the two cavitys, first from the driving wheel, second action wheel and second are from driving wheel circulation rotation have driving belt and auxiliary belt, respectively rotate in the two cavitys and have, driving belt and auxiliary belt evenly are fixed with the hopper along its circumference, be provided with drive assembly on the casing, drive assembly is used for driving the rotation of first action wheel and second action wheel, feed inlet and discharge gate have been seted up respectively at both ends about the casing, the feed inlet department slides there is the inlet pipe, the inlet pipe communicates with band conveyer's export. When the initiative belt is damaged, during unable transportation, the inlet pipe slides for auxiliary belt department is arranged in to the inlet pipe, makes the building stones fall into to the cavity bottom after, and the hopper on the auxiliary belt is carried the building stones, and consequently this application has the unchangeable effect of efficiency of maintaining building stones and carrying to the mixing plant.

Description

Bucket elevator for concrete batching

Technical Field

The application relates to the field of bucket elevators, in particular to a bucket elevator for concrete batching.

Background

At present in the production process of concrete, the process of its automatic blending generally is that the building stones in the feed bin get into weigh the back in the storehouse, fall into band conveyer on, then get into the bucket elevator and promote for building stones get into the mixing plant in, then pass through screw conveyer with cement storehouse and the cement and the powder in the powder storehouse and carry to the mixing plant in, then add water and stir in to the mixing plant.

Chinese utility model with publication number CN203819982U and publication number 20140910 discloses a bucket elevator for cement, which comprises a bucket elevator body and a control box, a chain wheel arranged in the bucket elevator body, a feed hopper arranged on the bucket elevator body, a discharge hopper arranged on the bucket elevator body, a first hydraulic device arranged on the bucket elevator body, a second hydraulic device arranged on the bucket elevator body, and a driving device arranged at one side of the bucket elevator body, wherein the chain wheel is connected with the output end of the driving device, the chain wheel is provided with a transmission chain, the transmission chain is provided with a material conveying hopper, the inner side of the discharge hopper is connected with a conveying plate, a support rod is connected below the conveying plate, the first hydraulic device, the second hydraulic device and the driving device are all connected with the control box, and the control box is connected with a storage power supply, the bucket elevator is characterized in that a control circuit board is arranged in the control box, a PLC device is arranged in the control circuit board, a material sensor is arranged at the position, corresponding to the conveying plate, of the top of the bucket elevator body, and the material sensor is connected with the control box. When the bucket elevator works, the control circuit board is conveyed by a PLC device according to a program through the control panel and the display screen, materials in the material conveying hopper are sensed by the material sensor, information is transmitted to the control box, the control box automatically controls the opening and the stopping of the driving device through a preset program, the first hydraulic device and the second hydraulic device are controlled to work, the conveying plate can automatically stretch out and draw back through the first hydraulic device, and therefore the materials are conveyed.

In view of the above-described related art, the inventors have considered that the transmission chain is broken when the bucket elevator is used for a long time, and therefore, when the bucket elevator is repaired, the bucket elevator needs to be stopped, thereby reducing the efficiency of transferring stone into the mixing station.

Disclosure of Invention

In order to keep the efficiency of conveying stone materials into a mixing station unchanged, the application provides a bucket elevator for concrete batching.

The application provides a pair of bucket elevator is used in concrete batching adopts following technical scheme:

a bucket elevator for concrete batching comprises a shell, wherein two cavities are formed in the shell, a driving belt and an auxiliary belt are respectively circularly rotated in the two cavities, a first driving wheel, a first driven wheel, a second driving wheel and a second driven wheel are respectively rotated in the two cavities, the first driving wheel and the first driven wheel are respectively sleeved at two ends of the driving belt in the length direction, the second driving wheel and the second driven wheel are respectively sleeved at two ends of the auxiliary belt in the length direction, the driving belt and the auxiliary belt are uniformly fixed with a hopper along the circumferential direction of the driving belt and the auxiliary belt, a driving assembly is arranged on the shell and is used for driving the first driving wheel and the second driving wheel to rotate, two feed inlets are formed in the lower end of the shell and are respectively communicated with the two cavities, two discharge outlets are formed in the upper end of the shell and are communicated with an inlet of a stirring station, the feed inlet department level slides has the inlet pipe of slope, the inlet pipe communicates with band conveyer's export.

Through adopting above-mentioned technical scheme, in the beginning, initiative belt department is arranged in to the inlet pipe, building stones are carried to the inlet pipe from band conveyer, then fall into to the cavity bottom, then start drive assembly, the rotation of the first action wheel of drive assembly drive and second action wheel, thereby drive the transmission of initiative belt and auxiliary belt, the last hopper of initiative belt scoops up building stones, transport building stones, make building stones transport to the stirring station in, when the initiative belt is damaged, when unable the transportation, the inlet pipe slides, make the inlet pipe arrange auxiliary belt department in, make building stones fall into to the cavity bottom after, the hopper on the auxiliary belt carries building stones, make building stones carry to the stirring station in, thereby do not need bucket elevator to shut down, thereby it is unchangeable to have maintained the efficiency that building stones carried to the stirring station.

Optionally, a hydraulic cylinder is horizontally fixed on the shell, and a piston rod of the hydraulic cylinder is fixedly connected with the feeding pipe.

Through adopting above-mentioned technical scheme, when the drive inlet pipe removed, start the pneumatic cylinder, the pneumatic cylinder stretches or contracts to drive the automatic slip of inlet pipe.

Optionally, be fixed with the auxiliary seat in the frame of band conveyer exit, seted up the discharge opening in the auxiliary seat, the inlet pipe moves with the auxiliary seat level and is connected, inlet pipe axis both sides all are fixed with the slide plate, the auxiliary seat both ends all are fixed with the fixed plate, two the slide plate slides respectively in the fixed plate, the diameter of inlet pipe equals with the height of discharge opening.

Through adopting above-mentioned technical scheme, when the inlet pipe removed, a sliding plate slided to the fixed plate in, and another sliding plate slides outward to the fixed plate for the inlet pipe is when removing, and the building stones can not break away from to subaerial in the discharge gate.

It is optional, drive assembly includes motor, dwang and connecting portion, the motor is fixed in on the casing, motor output shaft coaxial fixation has the drive wheel, the dwang rotates with the casing level and is connected, the outer one end coaxial fixation of casing has the auxiliary wheel is arranged in to the dwang, be connected through belt transmission between drive wheel and the auxiliary wheel, first action wheel and second action wheel all are connected with the coaxial rotation of dwang, connecting portion set up on the dwang for realize the alternative connection between dwang and first action wheel and the second action wheel.

Through adopting above-mentioned technical scheme, when the first action wheel of drive rotates, starter motor, the motor drives the rotation of drive wheel to drive the transmission of belt, make the dwang rotate, then start connecting portion, first action wheel and dwang are connected to connecting portion, thereby when making the dwang rotate, drive the rotation of first action wheel, thereby make driving belt circulation transmission.

Optionally, connecting portion include connecting block and two drive blocks, the cavity has been seted up in the dwang, two the equal sealed level of drive block slides in the cavity, two fixed connection between the drive block, the connecting block slides with the dwang and is connected, and the direction of sliding is perpendicular with the axis of dwang, the drive block drive connecting block slides in turn, the spread groove has all been seted up on the inner wall of first action wheel and second action wheel, but the connecting block joint is in the spread groove.

Through adopting above-mentioned technical scheme, when the driving belt circular transmission, the removal of drive block, a drive block drive connecting block joint in the spread groove of first action wheel, another drive block drive connecting block breaks away from the spread groove of second action wheel to when making the dwang rotate, first action wheel rotates, and the second action wheel does not rotate, saves the unnecessary merit.

Optionally, a supporting block is fixed on the connecting block, a return spring is sleeved on the connecting block, one end of the return spring is abutted to the supporting block, and the other end of the return spring is abutted to the inner wall of the cavity of the rotating rod.

Through adopting above-mentioned technical scheme, set up reset spring's purpose, realize the automatic re-setting of connecting block.

Optionally, be fixed with the air pump on the casing, air pump export intercommunication has the tuber pipe, sealed rotation has rotary joint on the dwang, tuber pipe and rotary joint fixed connection to with cavity intercommunication in the dwang.

Through adopting above-mentioned technical scheme, start the air pump, the air pump is to the intraductal air feed to the cavity internal gas feed of dwang, make the removal of gaseous promotion drive block, owing to adopt rotary joint, therefore when the dwang rotates, the tuber pipe can not twist reverse.

Optionally, alternate hole has been seted up to the dwang, it has the sliding block to slide in the dwang, the sliding block is used for opening and close alternate hole, it walks the gas passageway to have seted up in the dwang, walk the one end and alternate hole intercommunication of gas passageway, the one end intercommunication that rotary joint was kept away from to the other end and cavity.

Through adopting above-mentioned technical scheme, when making the connecting block joint in the spread groove on the second action wheel, do not aerify in to the dwang, then the drive sliding block slides, make the sliding block open the hole in turn, then make gas pass through the one end that the swivel joint was kept away from to the passageway entering cavity of walking, thereby make the removal of gaseous promotion drive block, make drive block drive connecting block joint in the spread groove of second action wheel, another drive block drive connecting block breaks away from the spread groove of first action wheel, thereby make the dwang can drive the rotation of second action wheel, thereby make the transmission of auxiliary belt.

Optionally, an electric push rod is fixed in the rotating rod, an electric slip ring is arranged on the rotating rod in a coaxial sleeved mode and rotates, the electric slip ring is fixedly connected with the shell, a lead of the electric push rod slides along the circumferential direction of the electric slip ring, the electric slip ring is fixedly connected with an external power line, and a telescopic end of the electric push rod is fixedly connected with the sliding block.

Through adopting above-mentioned technical scheme, the purpose that sets up the electric slip ring is for when the power supplies power to electric putter, the electric wire can not be around rolling up, and electric putter drives the automatic of sliding block and slides, thereby realizes the automatic start-stop in hole in turn.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the auxiliary belt and the feed pipe are arranged in a sliding manner, so that when the driving belt is damaged and cannot be transported, the feed pipe slides, the feed pipe is arranged at the auxiliary belt, stone falls into the bottom of the cavity, and then the hopper on the auxiliary belt conveys the stone to convey the stone into the mixing station, so that a bucket elevator is not needed to stop, and the efficiency of conveying the stone into the mixing station is maintained;

2. the connecting blocks and the driving blocks are arranged to drive the driving blocks to move when the driving belt circularly transmits, one driving block drives the connecting block to be clamped in the connecting groove of the first driving wheel, and the other driving block drives the connecting block to be separated from the connecting groove of the second driving wheel, so that when the rotating rod rotates, the first driving wheel rotates, the second driving wheel does not rotate, and unnecessary work is saved;

3. the purpose of arranging the alternate holes and the gas passing channels is to realize alternate sliding of the connecting blocks through gas.

Drawings

Fig. 1 is a schematic overall structure diagram of a bucket elevator applied to a concrete batching system according to an embodiment of the present application.

Fig. 2 is a schematic view of the overall structure of the bucket elevator according to the embodiment of the present application.

FIG. 3 is a cross-sectional view showing the drive assembly, air pump and cut-away portion of the housing showing the drive belt and auxiliary belt therein.

Fig. 4 is a sectional view showing an inner connecting portion thereof after a part of the rotating lever is cut away.

Fig. 5 is a schematic view showing the overall structure of the return spring on the connecting block and the connection relationship between the connecting block and the driving block.

Fig. 6 is an enlarged schematic view of a portion a of fig. 4.

Description of reference numerals: 100. a housing; 110. a feed pipe; 120. a feed inlet; 130. a discharge port; 140. a drive belt; 141. a first drive wheel; 142. a first driven wheel; 143. a hopper; 150. an auxiliary belt; 151. a second drive wheel; 152. a second driven wheel; 160. a drive assembly; 161. a motor; 1611. a drive wheel; 1612. an auxiliary wheel; 162. rotating the rod; 163. a connecting portion; 1631. connecting blocks; 1632. a drive block; 1634. a return spring; 1635. a support block; 170. an air pump; 171. an air duct; 180. a rotary joint; 190. alternating the holes; 191. a sliding block; 192. an electric push rod; 193. an electrical slip ring; 194. a gas passage; 200. an auxiliary seat; 210. a discharge hole; 220. a slide plate; 230. a fixing plate; 240. a hydraulic cylinder; 250. a material guide plate; 251. a guide rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a bucket elevator for concrete batching.

Referring to fig. 1 and 2, the bucket elevator for concrete batching includes a housing 100 and an inclined feeding pipe 110, an auxiliary seat 200 is fixed to a frame at an outlet of a belt conveyor, and a discharge hole 210 communicating with the outlet of the belt conveyor is formed in the auxiliary seat 200. The feeding pipe 110 is horizontally connected with the auxiliary base 200 in a sliding manner, and sliding plates 220 are fixed on two sides of the axis of the feeding pipe 110. The fixing plate 230 is fixed at both ends of the auxiliary base 200, the two sliding plates 220 slide in the fixing plate 230, respectively, and the diameter of the feeding pipe 110 is equal to the height of the discharging hole 210. A feed inlet 120 is formed at the lower end of the casing 100, one end of the feed pipe 110, which is far away from the auxiliary seat 200, slides horizontally on the casing 100 and is communicated with the feed inlet 120, and one end of the feed pipe 110, which is close to the casing 100, is lower than one end of the feed pipe, which is far away from the casing 100. Two discharge ports 130 are formed in the upper end of the casing 100, and the two discharge ports 130 are both communicated with the inlet of the mixing station. Two cavities are formed in the housing 100, the feed pipe 110 can slide between the two cavities, and two feed ports 120 are provided and respectively communicated with the two cavities. The belt conveyor conveys stones into the feeding pipe 110 from the discharging hole 210 and then enters the bottom of one cavity, when the stones need to enter the other cavity, the belt conveyor drives the feeding pipe 110 to slide, so that one sliding plate 220 slides towards the inside of the fixed plate 230, and the other sliding plate 220 slides towards the outside of the fixed plate 230, thereby avoiding the stones from being separated from the discharging hole 210 to the ground, and meanwhile, the stones are conveyed into the other cavity.

In order to stably slide the feed pipe 110, a guide plate 250 is fixed to the housing 100, and the feed pipe 110 abuts against the guide plate 250. Horizontal guide rods 251 are fixed on both sides of the axis of the feeding pipe 110, and the guide rods 251 penetrate through the side wall of the guide plate 250 and are connected with the guide plate 250 in a sliding manner.

In order to drive the feed pipe 110 to slide, a hydraulic cylinder 240 is horizontally fixed on the housing 100, a piston rod of the hydraulic cylinder 240 is fixedly connected with the feed pipe 110 through a connecting rod, and the hydraulic cylinder 240 is powered by a hydraulic pump.

Referring to fig. 3, a driving belt 140 and an auxiliary belt 150 are respectively rotated in the two cavities in a circulating manner. The first driving wheel 141, the first driven wheel 142, the second driving wheel 151 and the second driven wheel 152 are respectively arranged in the two cavities in a rotating mode, the first driving wheel 141 and the first driven wheel 142 are respectively sleeved at two ends of the driving belt 140 in the length direction, the second driving wheel 151 and the second driven wheel 152 are respectively sleeved at two ends of the auxiliary belt 150 in the length direction, and the driving belt 140 and the auxiliary belt 150 are evenly fixed with the hoppers 143 along the circumferential direction. The casing 100 is provided with a driving assembly 160, and the driving assembly 160 is used for driving the first driving wheel 141 and the second driving wheel 151 to rotate. Initially, the feeding pipe 110 is placed at the position of the driving belt 140, stones are conveyed into the feeding pipe 110 from the belt conveyor and then fall into the bottom of the cavity, then the driving assembly 160 is started, the driving assembly 160 drives the first driving wheel 141 and the second driving wheel 151 to rotate, so as to drive the driving belt 140 and the auxiliary belt 150 to transmit, the stones are scooped up by the hopper 143 on the driving belt 140, the stones are transported, so as to be transported into the stirring station, when the driving belt 140 is damaged and cannot be transported, the hydraulic cylinder 240 is started, the hydraulic cylinder 240 is contracted, the slippage of the feeding pipe 110 is driven, so that the feeding pipe 110 is placed at the auxiliary belt 150, so as to transport the stones into the bottom of the cavity, the hopper 143 on the auxiliary belt 150 transports the stones, and the stones are continuously conveyed into the stirring station.

Referring to fig. 3 and 4, the driving assembly 160 includes a motor 161, a rotating rod 162 and a connecting portion 163, the motor 161 is mounted on the casing 100 through a bolt, a driving wheel 1611 is coaxially fixed on an output shaft of the motor 161, the rotating rod 162 is horizontally and rotatably connected with the casing 100, an auxiliary wheel 1612 is coaxially fixed on one end of the rotating rod 162, which is disposed outside the casing 100, and the driving wheel 1611 is in transmission connection with the auxiliary wheel 1612 through a belt. First action wheel 141 and second action wheel 151 all are connected with the coaxial rotation of dwang 162, and connecting portion 163 sets up in dwang 162 for realize the rotation pole 162 with first action wheel 141 and second action wheel 151 between be connected in turn. When the first driving wheel 141 is driven to rotate, the motor 161 is started, and the motor 161 drives the rotation of the driving wheel 1611, so as to drive the transmission of the belt, so that the rotating rod 162 rotates, and then the connecting portion 163 is started, and the connecting portion 163 connects the first driving wheel 141 and the rotating rod 162, so as to drive the rotation of the first driving wheel 141 when the rotating rod 162 rotates, so as to drive the driving belt 140 to perform circular transmission.

Connecting portion 163 includes connecting block 1631 and two drive blocks 1632, has seted up the cavity in the dwang 162, and two drive blocks 1632 are all sealed horizontal slip in the cavity, through connecting rod fixed connection between two drive blocks 1632. The connecting block 1631 is slidably connected with the rotating rod 162, and the sliding direction is perpendicular to the axis of the rotating rod 162. One end of the driving block 1632 close to the inner wall of the rotating rod 162 is set to be an inclined surface, and the connecting block 1631 can abut against the driving block 1632. Connecting grooves (not shown) are formed in the inner walls of the first driving wheel 141 and the second driving wheel 151, and the connecting block 1631 can be clamped in the connecting grooves. When the driving belt 140 is driven to rotate circularly, the driving block 1632 is driven to move, one driving block 1632 drives the connecting block 1631 to be clamped in the connecting groove of the first driving wheel 141, and the other driving block 1632 drives the connecting block 1631 to be separated from the connecting groove of the second driving wheel 151, so that when the rotating rod 162 rotates, the first driving wheel 141 rotates, and the second driving wheel 151 does not rotate.

To drive the driving block 1632 to move, an air pump 170 is mounted on the housing 100 by bolts, and an outlet of the air pump 170 is communicated with the air pipe 171. The rotating rod 162 is sealed and rotated with a rotary joint 180, and the air pipe 171 is fixedly connected with the rotary joint 180 and communicated with the cavity in the rotating rod 162. The air pump 170 is started, the air pump 170 supplies air into the air pipe 171, and the air in the air pipe 171 enters the cavity of the rotating rod 162 through the rotating joint 180, so that the air pushes the driving block 1632 to move.

Referring to fig. 5, in order to realize the automatic reset of the connecting block 1631, a supporting block 1635 is coaxially fixed to the connecting block 1631, a reset spring 1634 is sleeved on the connecting block 1631, one end of the reset spring 1634 abuts against the supporting block 1635, and the other end abuts against the inner wall of the cavity of the rotating rod 162.

Referring to fig. 4 and 6, an alternate hole 190 is formed in the rotation rod 162, a sliding block 191 is slidably moved in the rotation rod 162, and the sliding block 191 opens and closes the alternate hole 190. An air passage 194 is formed in the rotating rod 162 along the axis thereof, one end of the air passage 194 is communicated with the alternate hole 190, and the other end is communicated with one end of the cavity far away from the rotating joint 180. An electric push rod 192 is fixed in the rotation lever 162, the length direction of the electric push rod 192 is perpendicular to the axis of the rotation lever 162, and the telescopic end of the electric push rod 192 is fixedly connected to the sliding block 191. The rotating rod 162 is coaxially sleeved with the rotating electrical slip ring 193, the electrical slip ring 193 is fixedly connected with the shell 100 through a connecting rod, a metal block is fixed on a lead of the electric push rod 192, the metal block slides along the circumferential direction of the inner wall of the electrical slip ring 193, and the electrical slip ring 193 is fixedly connected with an external power line. When making connecting block 1631 joint in the spread groove on second action wheel 151, no longer aerify in to dwang 162, then start electric putter 192, electric putter 192 drives sliding block 191 and slides, make sliding block 191 open hole 190 in turn, then make gas pass through the one end that the gas channel 194 gets into the cavity and keep away from rotary joint 180, thereby make the removal of gaseous promotion driving block 1632, make driving block 1632 drive connecting block 1631 joint in the spread groove of second action wheel 151, another driving block 1632 drive connecting block 1631 breaks away from the spread groove of first action wheel 141, thereby make dwang 162 can drive the rotation of second action wheel 151, thereby make auxiliary belt 150 transmission.

The implementation principle of the bucket elevator for concrete batching in the embodiment of the application is as follows: starting the air pump 170, supplying air to the cavity of the rotating rod 162 by the air pump 170, driving the sliding of the driving block 1632 by the air, driving the driving block 1632 to push the connecting block 1631 to move, connecting block 1631 being clamped in the connecting groove of the first driving wheel 141, then starting the motor 161, driving the rotation of the driving wheel 1611 by the motor 161, driving the rotation of the auxiliary wheel 1612 by the belt, driving the rotation of the rotating rod 162 by the auxiliary wheel 1612, driving the rotation of the first driving wheel 141, driving the rotation of the driving belt 140, conveying stone on the belt conveyor into the casing 100 through the feeding pipe 110, conveying the stone to the stirring station by the hopper 143 on the driving belt 140, and stopping conveying the air; after driving belt 140 damages, start hydraulic cylinder 240, hydraulic cylinder 240 drives inlet pipe 110 and slides to auxiliary belt 150 department, then start electric putter 192, the slippage of electric putter 192 drive sliding block 191, thereby make gas get into the one end that rotary joint 180 was kept away from to the cavity through walking gas channel 194, thereby promote the drive block 1632 and remove, make drive block 1632 drive connecting block 1631 joint in the spread groove of second action wheel 151, another drive block 1632 drive connecting block 1631 breaks away from in the spread groove of first action wheel 141, thereby make dwang 162 drive the rotation of second action wheel 151, make auxiliary belt 150 rotate, thereby make auxiliary belt 150 continue to carry the building stones.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a concrete is bucket elevator for batching which characterized in that: including casing (100), two cavitys have been seted up in casing (100), two cavitys internal circulation respectively rotate and have driving belt (140) and auxiliary belt (150), rotate respectively in two cavitys and have first action wheel (141), first follow driving wheel (142), second action wheel (151) and second follow driving wheel (152), the length direction both ends of driving belt (140) are located to first action wheel (141) and first follow driving wheel (142) cover respectively, the length direction both ends of auxiliary belt (150) are located to second action wheel (151) and second follow driving wheel (152) cover respectively, driving belt (140) and auxiliary belt (150) are evenly fixed with hopper (143) along its circumference, be provided with drive assembly (160) on casing (100), drive assembly (160) are used for driving the rotation of first action wheel (141) and second action wheel (151), two feed inlets (120) have been seted up to casing (100) lower extreme, two feed inlets (120) communicate with two cavitys respectively, two discharge gates (130) have been seted up to casing (100) upper end, two discharge gates (130) all communicate with the mixing plant import, feed inlet (120) department level slides has inlet pipe (110) of slope, inlet pipe (110) and band conveyer's export intercommunication, casing (100) are improved level and are fixed with pneumatic cylinder (240), the piston rod and inlet pipe (110) fixed connection of pneumatic cylinder (240), are fixed with auxiliary seat (200) in the frame in band conveyer exit, seted up discharge opening (210) in auxiliary seat (200), inlet pipe (110) and auxiliary seat (200) horizontal sliding connection, inlet pipe (110) axis both sides all are fixed with slide plate (220), auxiliary seat (200) both ends all are fixed with fixed plate (230), the two sliding plates (220) respectively slide in the fixed plate (230), the diameter of the feeding pipe (110) is equal to the height of the discharging hole (210), the driving component (160) comprises a motor (161), a rotating rod (162) and a connecting part (163), the motor (161) is fixed on the shell (100), the output shaft of the motor (161) is coaxially fixed with a driving wheel (1611), the rotating rod (162) is horizontally and rotatably connected with the shell (100), an auxiliary wheel (1612) is coaxially fixed at one end of the rotating rod (162) which is arranged outside the shell (100), the driving wheel (1611) is in transmission connection with the auxiliary wheel (1612) through a belt, the first driving wheel (141) and the second driving wheel (151) are coaxially and rotatably connected with the rotating rod (162), the connecting part (163) is arranged on the rotating rod (162), used for realizing the alternate connection between the rotating rod (162) and the first driving wheel (141) and the second driving wheel (151).