Quantitative and rotary feeding system

Abstract

The present application relates to quantitative and rotary feeding system, including quantitative feeding device, rotary spreading device and support plate, quantitative feeding device includes bucket elevator and belt weighing crusher, belt weighing crusher includes mounting bracket, feed hopper, dust cover, crusher, weighing belt machine, storage hopper and weighing hopper, mounting bracket top is provided with feed hopper, feed hopper top is provided with dust cover, feed hopper lower side is communicated with crusher, mounting bracket is provided with weighing belt machine, weighing belt machine top is provided with storage hopper, weighing belt machine is communicated with weighing hopper, quantitative feeding device and support plate are provided with rotary spreading device, rotary spreading device includes support bent plate, bearing seat, drive motor and spreading hopper controlled by drive motor, support bent plate is provided with bearing seat and drive motor, bearing seat is provided with spreading hopper, and the bottom end edge of spreading hopper is provided with multiple material ports, the present application can reduce the occupied space, and can improve the uniformity of feeding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of abrasive tool production and manufacturing, in particular to a quantitative and rotary feeding system. BACKGROUND

[0002] An abrasive tool is a tool used for grinding, polishing and polishing. The grinding wheel and the grinding wheel belong to one kind of abrasive tool. Taking the manufacture of the grinding wheel as an example, nowadays the grinding wheel forming equipment gradually increases, and the high strength operation of manual operation is replaced by automatic machine equipment. Especially the feeding process of the grinding wheel raw material, the conventional operation needs manual mixing of raw materials, weighing and pouring into the mold, which is convenient for subsequent pressing forming. Frequent manual repetitive operation has high labor intensity and affects the production efficiency.

[0003] In view of this, the market gradually puts forward the automatic feeding mechanical equipment, for example, the patent publication No. CN106002667B discloses a grinding wheel forming machine conveying and pushing and scraping material system, which is provided with a grinding wheel forming machine lifting conveying mechanism, and cooperates with a belt conveyor and a sensor, so that the feeding process does not need manual intervention, the automation degree is very high, and the feeding efficiency is greatly improved. The grinding wheel forming machine pushing and scraping material mechanism integrates the traditional rotary scraping and pushing and scraping material together, and the material scraping efficiency is high. However, the whole machine occupies a large space, and the linear reciprocating vibrator and the vibrating feeding groove are used as the feeding means, which is greatly affected by the material performance and the material pressure, and needs to be adjusted frequently in use.

[0004] For example, the patent publication No. CN212942835U discloses a resin abrasive fixed weight feeding device. Under the vibration of the vibration unit, the loose resin abrasive is horizontally conveyed into the receiving hopper along the discharging hopper; the resin abrasive reaching the receiving hopper is again vibrated by the linear vibrator, and falls into the feeding hopper more uniformly, and a sensor is arranged below the feeding hopper to measure the weight in real time. When the resin abrasive reaches the specified weight, the cylinder drives the feeding hopper to overturn, and the resin abrasive falls into the mold cavity, so as to achieve the effect of fixed weight feeding. The whole machine occupies a small space, but the feeding hopper overturns to pour the raw material directly into the abrasive tool, which is difficult to realize the uniformity of feeding. SUMMARY

[0005] In order to solve the problems of large space occupation and poor feeding uniformity of the existing feeding equipment, the present application provides a quantitative and rotary feeding system, which can realize uninterrupted continuous feeding, crushing, filtering and weighing of the raw materials, ensure the normal production, and at the same time adopt the rotary feeding means to improve the uniformity of feeding, ensure the uniformity of the raw materials in the mold, and facilitate the subsequent scraping operation.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0007] Quantitative and rotary feeding system, including quantitative feeding device for raw material feeding, rotary feeding device for raw material discharging and support plate;

[0008] The quantitative feeding device includes a bucket elevator and a belt weighing crusher. The bucket elevator facilitates uninterrupted feeding into the belt weighing crusher. The belt weighing crusher includes a mounting bracket, a feeding hopper, a dust cover, a crusher, a weighing belt, a storage hopper and a weighing hopper. The feeding hopper is arranged above the mounting bracket and communicates with the bucket elevator to conveniently receive the incoming raw materials. The dust cover is arranged above the feeding hopper to facilitate dust floating when the raw materials are poured. The crusher is connected below the feeding hopper and has a screen structure at the outlet to facilitate filtering of the raw materials.

[0009] The weighing belt is arranged in the mounting bracket. The storage hopper is arranged above the weighing belt to conveniently guide the raw materials flowing out of the crusher to the weighing belt. The storage hopper is connected to the crusher outlet upwardly and to the weighing belt downwardly. The weighing hopper is connected to the weighing belt and arranged on the mounting bracket below one end of the weighing belt to facilitate re-weighing of the raw materials.

[0010] The rotary feeding device is arranged between the quantitative feeding device and the support plate. The rotary feeding device includes a support bent plate, a bearing seat, a driving motor and a feeding hopper controlled by the driving motor. One end of the support bent plate is connected to the support plate and the other end is bent to connect to the rack of the weighing belt.

[0011] The bearing seat and the driving motor are arranged on the support bent plate. The feeding hopper is arranged in the bearing seat to facilitate rotation of the feeding hopper. The feeding hopper is connected to the weighing hopper upwardly. Multiple material outlets are arranged at the bottom end of the feeding hopper. The material outlets are connected to the mold downwardly to facilitate uniform discharge of the materials into the mold. A scraper is arranged outside the bearing seat. The scraper is arranged along the inner wall of the feeding hopper with a gap between the scraper and the inner wall of the feeding hopper to facilitate smooth discharge of the materials without affecting the rotation of the feeding hopper.

[0012] Further, the bucket elevator includes a lifting bracket, a guide rail, a chain lifting unit, a lifting trolley controlled by the chain lifting unit and a lifting bucket with a guide wheel. The lifting bracket is arranged vertically. The guide rail is arranged on one side of the lifting bracket. The upper end of the guide rail is inclined and bent towards the dust cover to facilitate changing the opening direction of the lifting bucket.

[0013] The chain lifting unit is rotatably arranged on the lifting bracket. The lifting trolley is slidably arranged on the lifting bracket. The lifting bucket is rotatably arranged on the lifting trolley. The guide wheel on the lifting bucket moves along the guide rail. The lifting trolley facilitates moving the lifting bucket up and down.

[0014] Further, the feeding hopper is a conical structure with large top and small bottom, the dust cover is a conical closed cover structure with small top and large bottom, the dust cover is connected and fixed with the large diameter end of the feeding hopper, the lower end opening of the dust cover is communicated with the feeding hopper, the side of the dust cover facing the bucket elevator is provided with an upper dust curtain, the lifting bucket passes through the upper dust curtain and is communicated with the feeding hopper, which does not affect the dumping operation of the lifting bucket and can prevent dust from floating out.

[0015] Further, the crusher is arranged below the feeding hopper, the crusher comprises a discharging pipe, a sieve plate, a speed reducer, a crushing unit controlled by the speed reducer and a dustproof frame, the discharging pipe is a rectangular pipe, the discharging pipe is communicated with the outlet of the feeding hopper upward, the sieve plate is arranged below the discharging pipe to facilitate filtering.

[0016] The speed reducer is arranged on one side of the discharging pipe, the crushing unit is rotatably arranged in the discharging pipe, the sieve plate is bent to be semicircular and arranged around the side of the crushing unit, thereby improving the screening area.

[0017] Further, the crushing unit comprises a rotating shaft, a rotor disc and a stirring assembly, the rotating shaft is rotatably connected with the discharging pipe through a bearing, one end of the rotating shaft extends out of the discharging pipe and is connected with the speed reducer through a key, thereby facilitating driving the rotating shaft, a plurality of rotor discs are arranged on the rotating shaft in the discharging pipe, thereby facilitating driving the rotor discs to rotate together, and the plurality of rotor discs are arranged along the axial direction of the rotating shaft.

[0018] The rotating shaft in the discharging pipe is uniformly provided with a plurality of stirring assemblies arranged along the axial direction of the rotating shaft, each stirring assembly is arranged between the plurality of rotor discs, and each stirring assembly comprises two stirring plates, a crushing channel is formed between the two stirring plates, and the crushing channel is wide at one end and narrow at the other end.

[0019] The dustproof frame is arranged on the side of the discharging pipe, thereby limiting the flow of dust, the cross section of the dustproof frame is larger than that of the discharging pipe, the dustproof frame is a rectangular frame structure formed by a plurality of dustproof curtains, and the dustproof frame extends downward and abuts against the storage hopper.

[0020] Further, the weighing belt conveyor is horizontally arranged, the storage hopper is arranged along the conveying direction of the weighing belt conveyor, the storage hopper is connected and fixed with the rack of the weighing belt conveyor on both sides, the storage hopper is outwardly expanded in a reverse "8" shape above the weighing belt conveyor to connect the crusher, the storage hopper below the weighing belt conveyor is a pipe structure with a "sun" shaped cross section, rubber material blocking strips are arranged on the bottom of both sides of the storage hopper, the rubber material blocking strips are in contact with the conveying belt of the weighing belt conveyor, thereby preventing raw materials from flowing out of the storage hopper.

[0021] Further, the inner wall of the storage hopper is provided with a material level sensor for monitoring the material layer thickness in the storage hopper, and a material level baffle is adjustably arranged on the middle part of the storage hopper upward and downward to facilitate the control of the material layer thickness, and the gap between the material level baffle and the conveying belt of the weighing belt conveyor is adjustable; a pneumatic gate is arranged at the end of the weighing belt conveyor along the running direction of the weighing belt conveyor and is slidably arranged on the storage hopper to facilitate the control of whether the raw material can flow out of the storage hopper.

[0022] A material collecting chute is further arranged on the mounting bracket below the weighing belt conveyor, the material collecting chute is arranged obliquely downward toward the side of the bucket elevator, the material collecting chute is communicated with the bucket elevator, and the residual raw material on the conveying belt of the weighing belt conveyor can be guided into the lifting bucket by the material collecting chute.

[0023] Further, the weighing hopper is arranged at the end of the weighing belt conveyor along the running direction of the weighing belt conveyor, the weighing belt conveyor and the weighing hopper are communicated upward and downward, and the end part of the weighing belt conveyor is further provided with a transparent dustproof cover which covers above the weighing hopper.

[0024] The weighing hopper comprises a mounting plate with a weighing sensor, an opening and closing cylinder, a hopper frame, a hopper body, and an opening and closing plate, the weighing hopper is connected to the rack of the weighing belt conveyor through the mounting plate, the mounting plate is provided with the weighing sensor and the opening and closing cylinder at two ends respectively, and the opening and closing cylinder is vertically arranged to facilitate the upward and downward telescopic operation.

[0025] Further, the hopper frame is arranged on the weighing sensor, the cross section of the hopper frame is in the shape of “N”, the two sides above the hopper frame are horizontally bent and connected and fixed with the hopper body, the two sides above the hopper frame are rotatably provided with opening and closing control plates at the bent parts, a control rod is arranged between the two opening and closing control plates to facilitate the control of the rotation of the two opening and closing control plates together, the control rod is lifted upward by the opening and closing cylinder, and a vertically arranged tension spring is arranged between each opening and closing control plate and the hopper frame to move the control rod downward and reset.

[0026] The hopper body is open upward and downward, the opening and closing plates are hingedly connected to the two sides of the lower end of the hopper body, the two opening and closing plates are in the structure of a pair of opposite doors, a front connecting rod is hingedly connected between the two opening and closing plates to realize linkage control, the opening and closing of the two opening and closing plates is facilitated, a rear connecting rod is hingedly connected between one of the opening and closing plates close to the hopper frame and the opening and closing control plate to realize the opening and closing control of the opening and closing plate, and the opening and closing of the opening and closing plate is facilitated through the swing of the opening and closing control plate and the transmission of the rear connecting rod.

[0027] Further, the support bent plate is bent in the shape of “□”, one horizontal end of the support bent plate is connected and fixed with the support plate, and one vertical end of the support bent plate is connected and fixed with the rack of the weighing belt conveyor; a motor mounting seat is arranged on the support bent plate, the driving motor is arranged on the motor mounting seat, and the bearing seat is arranged at one side of the motor mounting seat.

[0028] The material scattering hopper comprises a rotating inner ring segment, a feeding cone ring segment and a guide cone ring segment, the rotating inner ring segment is a circular ring body, the rotating inner ring segment is connected with the bearing seat, and the rotating inner ring segment is belt driven by the driving motor;

[0029] The upper end of the rotating inner ring segment extends upwards out of the bearing seat and is bolted with the feeding cone ring segment, the feeding cone ring segment is a conical tubular body with a large upper end and a small lower end, the lower end of the rotating inner ring segment extends downwards out of the bearing seat and is bolted with the guide cone ring segment, the guide cone ring segment is a circular ring body with a section in the shape of "[", the guide cone ring segment is horizontally arranged and seals the bottom of the rotating inner ring segment, edges of the guide cone ring segment are provided with the material outlets, and the middle part of the guide cone ring segment is conically raised upwards into the rotating inner ring segment;

[0030] The two ends of the scraper rod are connected and fixed with the bearing seat, the middle part of the scraper rod is obliquely arranged downwards along the inner side wall of the feeding cone ring segment, then vertically arranged downwards along the guide cone ring segment, and finally obliquely arranged upwards along the middle part of the guide cone ring segment.

[0031] Through the above technical scheme, the application has the following beneficial effects:

[0032] The application has reasonable structure design, the bucket elevator can feed the belt weighing and crushing machine at any time, and the continuous operation of the belt weighing and crushing machine is ensured. The bucket elevator and the belt weighing and crushing machine are arranged side by side, and the space occupation is small. When the lifting bucket feeds, the raw materials enter the feeding hopper, the feeding efficiency is increased, the use is more convenient, the dust flow is limited under the action of the dust cover, and the working environment is ensured.

[0033] In the application, the raw materials in the feeding hopper directly flow to the crusher, the raw materials are conveniently mixed, stirred and crushed, the raw materials are prevented from caking, the raw materials flow out of the crusher through the sieve plate, and the flowing raw materials meet the production requirements. The raw materials flowing out of the sieve plate flow to the weighing belt machine after being guided by the storage hopper. The weighing belt machine can weigh the raw materials, the material level sensor, the material baffle and the starting gate plate in the storage hopper can monitor the material level, control the material layer thickness and limit whether the raw materials can flow out of the storage hopper.

[0034] The weighing hopper has the functions of storing, discharging and weighing the raw materials, and the feeding amount of the raw materials is conveniently and accurately controlled. The rotating material scattering device rotates the material scattering hopper by the driving motor, the bottom of the material scattering hopper drives three evenly arranged material outlets, the raw materials uniformly flow into the mold through the material outlets in the rotating process of the material scattering hopper, and the uniformity of feeding is realized. The hanging rod that does not rotate is arranged in the material scattering hopper. On the basis that the material scattering hopper rotates and the scraper rod is stationary, the scraper rod can stir the raw materials, and the smoothness of the material scattering hopper is improved. Therefore, the automatic operation of feeding, weighing and feeding is realized, the feeding efficiency is improved, and the quality and stability of the product are improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is the overall structure schematic diagram of the quantitative and rotary feeding system of the present application.

[0036] Figure 2 is the overall structure schematic diagram of the quantitative and rotary feeding system of the present application. Figure 1 is the split schematic diagram of the quantitative and rotary feeding system of the present application.

[0037] Figure 3 is one of the quantitative feeding device axonometric diagrams of the quantitative and rotary feeding system of the present application.

[0038] Figure 4 is the second quantitative feeding device axonometric diagram of the quantitative and rotary feeding system of the present application.

[0039] Figure 5 is one of the bucket elevator sectional views of the quantitative and rotary feeding system of the present application, in which the lifting chain is omitted.

[0040] Figure 6 is the second bucket elevator sectional view of the quantitative and rotary feeding system of the present application, in which the lifting chain is omitted.

[0041] Figure 7 is the front view of the belt weighing crusher of the quantitative and rotary feeding system of the present application.

[0042] Figure 8 is the sectional view of the belt weighing crusher of the quantitative and rotary feeding system of the present application, in which the dust cover is omitted.

[0043] Figure 9 is the sectional view of the crusher of the quantitative and rotary feeding system of the present application.

[0044] Figure 10 is the storage hopper axonometric diagram of the quantitative and rotary feeding system of the present application.

[0045] Figure 11 is the belt weighing crusher axonometric diagram of the quantitative and rotary feeding system of the present application.

[0046] Figure 12 is one of the weighing hopper axonometric diagrams of the quantitative and rotary feeding system of the present application.

[0047] Figure 13 is the second weighing hopper axonometric diagram of the quantitative and rotary feeding system of the present application.

[0048] Figure 14 is the third weighing hopper axonometric diagram of the quantitative and rotary feeding system of the present application.

[0049] Figure 15 is the weighing hopper sectional view of the quantitative and rotary feeding system of the present application.

[0050] Figure 16is the axial view of the rotary spreading device of the quantitative and rotary feeding system.

[0051] Figure 17 is the quantitative and rotary feeding system of the invention Figure 16 is the enlarged view of the quantitative and rotary feeding system.

[0052] Figure 18 is the sectional view of the quantitative and rotary feeding system of the rotary spreading device.

[0053] Figure 19 is the axial view of the quantitative and rotary feeding system of the brush mechanism.

[0054] In the drawings, 1 is the quantitative feeding device, 2 is the rotary spreading device, 201 is the support bent plate, 202 is the bearing seat, 203 is the driving motor, 204 is the spreading hopper, 3 is the support plate, 4 is the bucket elevator, 5 is the belt weighing crusher, 6 is the lifting support, 61 is the upper top plate, 62 is the lower bottom plate, 63 is the support channel steel, 64 is the reinforcing plate, 65 is the chain cover, 7 is the guide rail, 8 is the chain lifting unit, 81 is the driving sprocket set, 82 is the driven sprocket set, 83 is the speed reducer, 9 is the lifting trolley, 10 is the guide wheel, 11 is the lifting hopper, 12 is the supporting wheel, 13 is the fixed plate, 14 is the mounting bracket, 15 is the feeding hopper, 16 is the dust cover, 17 is the crusher, 171 is the discharging pipe, 172 is the sieve plate, 173 is the speed reducing motor, 174 is the crushing unit, 175 is the dustproof frame, 18 is the weighing belt conveyor, 19 is the storage hopper, 20 is the weighing hopper, 21 is the upper dustproof curtain, 22 is the rotating shaft, 23 is the rotor disc, 24 is the stirring plate, 25 is the rubber material blocking strip, 26 is the material level sensor, 27 is the material level baffle, 28 is the pneumatic gate, 29 is the brush plate, 30 is the material collecting chute, 31 is the weighing sensor, 32 is the mounting plate, 33 is the opening and closing cylinder, 34 is the hopper frame, 35 is the hopper body, 36 is the opening and closing plate, 37 is the control lever, 371 is the opening and closing control plate, 38 is the tension spring, 39 is the front connecting rod, 40 is the rear connecting rod, 41 is the motor mounting seat, 42 is the guide wheel shaft, 43 is the material port, 44 is the rotary inner ring segment, 45 is the feeding cone ring segment, 46 is the material guiding cone ring segment, 47 is the scraping rod, 48 is the brush mechanism, 481 is the material plate, 482 is the brushing cylinder, 483 is the round head brush, 49 is the transparent dust cover. DETAILED DESCRIPTION

[0055] The specific embodiments of the invention will be described in detail below with reference to the accompanying drawings:

[0056] As Figures 1-19As shown, the quantitative and rotary feeding system comprises a quantitative feeding device 1 for raw material feeding, a rotary feeding device 2 for raw material discharging and a support plate 3. The rotary feeding device 2 is arranged between the quantitative feeding device 1 and the support plate 3, and is supported by the quantitative feeding device 1 and the support plate 3 to ensure the reliability of the installation of the rotary feeding device 2. The quantitative feeding device 1 supplies raw materials into the rotary feeding device 2, and the rotary feeding device 2 uniformly throws the raw materials into the mold by the rotary throwing method to achieve uniform feeding.

[0057] The quantitative feeding device 1 comprises a bucket elevator 4 and a belt weighing crusher 5. The bucket elevator 4 is used to convey the raw materials from a low place to a high place and to the belt weighing crusher 5. The bucket elevator 4 comprises an elevating support 6, a guide rail 7, a chain lifting unit 8, an elevating trolley 9 controlled by the chain lifting unit 8 and an elevating bucket 11 with a guide wheel 10.

[0058] The elevating support 6 is vertically arranged and comprises an upper top plate 61, a lower bottom plate 62, support channel steels 63, reinforcing plates 64 and a chain cover 65. Two support channel steels 63 are arranged between the upper top plate 61 and the lower bottom plate 62, and the two support channel steels 63 are symmetrically arranged to connect and fix the upper top plate 61 and the lower bottom plate 62. At least three reinforcing plates 64 are uniformly arranged between the two support channel steels 63, and the reinforcing plates 64 are plate bodies bent in a “[” shape. The chain cover 65 is arranged between the two support channel steels 63 and covers the three reinforcing plates 64.

[0059] The elevating support 6 is provided with the guide rail 7 on one side, the guide rail 7 is in the form of a channel steel, the guide rail 7 is connected and fixed with one support channel steel 63, the guide rail 7 is vertically arranged, the vertical height of the guide rail 7 is less than that of the support channel steel 63, and the upper end of the guide rail 7 is bent and inclined towards the side of the belt weighing crusher 5. The chain lifting unit 8 is rotatably arranged on the elevating support 6, and the chain lifting unit 8 is vertically arranged and can drive the elevating trolley 9 to move up and down.

[0060] The chain lifting unit 8 comprises a driving sprocket set 81, a driven sprocket set 82, a brake-equipped speed reducer 83 and a lifting chain. The driving sprocket set 81 and the speed reducer 83 are arranged on the upper top plate 61, and the driving sprocket set 81 and the speed reducer 83 are key-connected, the speed reducer 83 can drive the driving sprocket set 81 to operate, and the speed reducer 83 is an nmrv110 series speed reducer 83. The driven sprocket set 82 is arranged on the lower bottom plate 62, and the driven sprocket set 82 corresponds to the driving sprocket set 81 up and down, and the lifting chain is connected between the driving sprocket set 81 and the driven sprocket set 82, so as to drive the lifting chain to operate.

[0061] The lifting trolley 9 is arranged on the lifting support 6 to slide up and down, and the lifting trolley 9 is provided with four supporting wheels 12, two supporting wheels 12 in each group are arranged in up and down interval and roll along a support channel steel 63, so as to realize the up and down movement of the lifting trolley 9 between two support channel steels 63. The lifting trolley 9 is connected with the lifting chain and driven by the lifting chain to run, and the up and down movement of the lifting trolley 9 can be controlled by the forward and reverse rotation of the speed reducer 83.

[0062] The lifting bucket 11 is arranged on the lifting trolley 9 to rotate, and the lifting bucket 11 is used for lifting the raw materials required for the manufacture of the grinding tool, and the upper end of the lifting bucket 11 is open and the lower end is closed. Specifically, the fixed plate 13 is arranged on the lifting trolley 9 to rotate, and the lifting bucket 11 is arranged on the fixed plate 13, so that the lifting bucket 11 can rotate relative to the lifting trolley 9. However, the guide wheel 10 on the lifting bucket 11 moves along the guide rail 7, so that when the lifting bucket 11 is at the bottom of the lifting support 6, the lifting bucket 11 is limited by the guide wheel 10 and does not rotate. Once the lifting bucket 11 is gradually moved upward under the driving of the lifting chain, the guide wheel 10 moves to the bending position of the guide rail 7, the lifting bucket 11 rotates, and as the lifting bucket 11 continues to move upward, the opening of the lifting bucket 11 is inclined downward, and the raw materials in the lifting bucket 11 are poured into the belt weighing crusher 5.

[0063] The belt weighing crusher 5 is used for storing, crushing and weighing the raw materials, that is, after receiving the raw materials conveyed by the bucket elevator 4, the belt weighing crusher 5 stores, crushes and weighs the raw materials, and then conveys them to the rotary material scattering device 2. The belt weighing crusher 5 includes a mounting support 14, a feeding hopper 15, a dust cover 16, a crusher 17, a weighing belt machine 18, a storage hopper 19 and a weighing hopper 20.

[0064] The mounting support 14 is a rectangular frame body welded by square tubes, and the mounting support 14 has a certain height and is lower than the guide rail 7. The feeding hopper 15 is arranged above the mounting support 14, and the feeding hopper 15 is a conical body structure with large upper end and small lower end, and the feeding hopper 15 is open at both upper and lower ends; the feeding hopper 15 is communicated with the bucket elevator 4, and specifically, the raw materials conveyed by the lifting bucket 11 are poured into the feeding hopper 15 and temporarily stored in the feeding hopper 15.

[0065] In order to avoid the dust generated when the lifting bucket 11 dumps the raw materials from spreading freely, a dust cover 16 is arranged above the feeding hopper 15, and the upper end of the guide rail 7 is bent towards the dust cover 16. The dust cover 16 is a conical closed cover structure with a small upper end and a large lower end, the longitudinal section of the dust cover 16 is a right trapezoid, the large diameter end of the dust cover 16 is fixedly connected with the large diameter end of the feeding hopper 15, and the lower end opening of the dust cover 16 is communicated with the feeding hopper 15. And the dust cover 16 is opened to the side of the bucket elevator 4, and the lifting bucket 11 dumps the raw materials into the feeding hopper 15 through the opening. An upper dust curtain 21 is arranged at the opening of the dust cover 16 towards the bucket elevator 4, and the lifting bucket 11 communicates with the feeding hopper 15 through the upper dust curtain 21, and the upper dust curtain 21 does not affect the lifting bucket 11 to extend into the dust cover 16.

[0066] The crusher 17 is arranged below the feeding hopper 15, the feeding hopper 15 is communicated with the crusher 17 below, and the outlet of the crusher 17 is a screen structure. The raw materials entering the feeding hopper 15 directly pass into the crusher 17 downward, and then pass through the stirring and crushing of the crusher 17 and then flow out of the crusher 17 after filtering.

[0067] The crusher 17 includes a discharging pipe 171, a screen plate 172, a speed reducer 173, a crushing unit 174 controlled by the speed reducer 173, and a dustproof frame 175. The discharging pipe 171 is a rectangular pipe, the discharging pipe 171 is communicated with the outlet of the feeding hopper 15 upward, the screen plate 172 is arranged below the discharging pipe 171, and the raw materials flow out of the discharging pipe 171 after filtering through the screen plate 172. The speed reducer 173 is arranged on one side of the discharging pipe 171, the speed reducer 173 is located outside the discharging pipe 171, the speed reducer 173 adopts an nmrv063 series motor, the crushing unit 174 is rotatably arranged in the discharging pipe 171, the crushing unit 174 can be driven to rotate by the speed reducer 173, and the screen plate 172 is bent to be semicircular and surrounds the side of the crushing unit 174. After the raw materials pass through the stirring and crushing of the crushing unit 174, they immediately flow out of the screen plate 172.

[0068] In order to improve the crushing effect, the crushing unit 174 includes a rotating shaft 22, a rotor disc 23 and a stirring assembly. The rotating shaft 22 is rotatably connected with the discharging pipe 171 through a bearing, one end of the rotating shaft 22 extends out of the discharging pipe 171 and is keyed connected with the speed reducer 173, and the rotating shaft 22 is driven to rotate by the speed reducer 173. Three rotor discs 23 are arranged on the rotating shaft 22 in the discharging pipe 171, the three rotor discs 23 are arranged at intervals along the axis of the rotating shaft 22, and the rotating shaft 22 can drive the rotor discs 23 to rotate together.

[0069] The rotating shaft 22 in the discharging pipe 171 is uniformly provided with three stirring assemblies, which are arranged in the axial direction of the rotating shaft 22. When the stirring assemblies are installed, each stirring assembly is arranged between three rotor discs 23, and each stirring assembly comprises two stirring plates 24, a crushing channel is formed between the two stirring plates 24, and an angle is formed between the two stirring plates 24, so that the crushing channel is wide at one end and narrow at the other end. In short, each stirring plate 24 is bolted with the three rotor discs 23, and the three rotor discs 23 jointly drive the stirring plate 24 to rotate.

[0070] When the crusher 17 is in operation, the three stirring assemblies are driven to rotate in the discharging pipe 171 by the reduction motor 173, and the raw materials are stirred and crushed by the rotating action of the stirring plates 24. At the same time, the stirring plates 24 can lift the raw materials to make the raw materials flow through the crushing channel, thereby increasing the collision and crushing effect between the raw materials. The raw materials after stirring and crushing will flow out of the crusher 17 through the screen plate 172. In order to avoid dust when the crusher 17 is working, a dustproof frame 175 is arranged on the side of the discharging pipe 171. The dustproof frame 175 is a rectangular frame structure formed by four dustproof curtains, and the cross section of the dustproof frame 175 is larger than that of the discharging pipe 171, so that the dustproof frame 175 can limit the flow of dust.

[0071] A weighing belt conveyor 18 is arranged in the mounting bracket 14, and the weighing belt conveyor 18 is horizontally arranged. After the raw materials are stirred and crushed by the crusher 17, the raw materials flow downward into the weighing belt conveyor 18, and the raw materials are weighed and conveyed by the weighing belt conveyor 18. In order to effectively connect the weighing belt conveyor 18 and the crusher 17, a storage hopper 19 is arranged above the weighing belt conveyor 18. The storage hopper 19 has a certain length and is arranged along the conveying direction of the weighing belt conveyor 18. The storage hopper 19 is fixedly connected with the frame of the weighing belt conveyor 18 on both sides.

[0072] The storage hopper 19 is connected to the outlet of the crusher 17 upwardly and connected to the weighing belt conveyor 18 downwardly. Specifically, the storage hopper 19 is outwardly expanded in an inverted "8" shape at the top to connect the crusher 17. The screen plate 172 is located within the range above the storage hopper 19, and the dustproof frame 175 extends downwardly and abuts against the storage hopper 19, so as to ensure that the raw materials after passing through the screen plate 172 are collected and gathered by the storage hopper 19 and guided to the weighing belt conveyor 18. The lower part of the storage hopper 19 is a pipe structure with a "sun" cross section. Rubber material blocking strips 25 are arranged on the bottom of both sides of the storage hopper 19, which are in contact with the conveying belt of the weighing belt conveyor 18, so as to limit the raw materials in the storage hopper 19.

[0073] A material level sensor 26 is arranged on the inner wall of the storage hopper 19 to monitor the material level in the storage hopper 19. A material level baffle 27 is arranged on the middle of the storage hopper 19 and is adjustable up and down. Long strip holes are vertically arranged on the material level baffle 27 and are connected with the storage hopper 19 by bolts. After the bolts are tightened, the material level baffle 27 is fixed. After the bolts are loosened, the height of the material level baffle 27 can be adjusted up and down. Therefore, the gap between the material level baffle 27 and the conveying belt of the weighing belt conveyor 18 is adjustable. By adjusting the gap, the thickness of the raw material output by the weighing belt conveyor 18, that is, the thickness of the material layer, is controlled. The space between the material level baffle 27 and the first end of the storage hopper 19 corresponds to the sieve plate 172. The space between the end of the storage hopper 19 and the material level baffle 27 does not correspond to the sieve plate 172. Therefore, the length of the storage hopper 19 is greater than the length of the outlet of the crusher 17.

[0074] A pneumatic gate 28 is arranged at the end of the storage hopper 19 along the running direction of the weighing belt conveyor 18. The pneumatic gate 28 is slidably arranged on the storage hopper 19. Specifically, the pneumatic gate 28 includes a pneumatic cylinder and a gate controlled by the pneumatic cylinder. The gate can move up and down along the storage hopper 19 under the control of the pneumatic cylinder. Moving up can open the storage hopper 19 and facilitate the weighing belt conveyor 18 to move the raw material out of the storage hopper 19. Moving down can close the storage hopper 19 and prevent the raw material from moving out of the storage hopper 19.

[0075] The raw material is conveyed by the weighing belt conveyor 18. To avoid residual raw material on the conveying belt, a brush plate 29 is arranged below the end of the weighing belt conveyor 18. The brush plate 29 is arranged along the width direction of the weighing belt conveyor 18. The brush plate 29 can brush the surface of the conveying belt to avoid residual raw material. In addition, a material collecting chute 30 is arranged on the mounting bracket 14 below the weighing belt conveyor 18. The material collecting chute 30 is arranged obliquely downward toward the side of the bucket elevator 4 and is in communication with the lifting bucket 11 of the bucket elevator 4. If there is a small amount of residual raw material, the raw material will enter the lifting bucket 11 along the material collecting chute 30 and can be reused.

[0076] The weighing belt conveyor 18 is in communication with a weighing bucket 20, that is, the weighing belt conveyor 18 and the weighing bucket 20 are in vertical communication. The weighing bucket 20 is arranged on the mounting bracket 14 below one end of the weighing belt conveyor 18, that is, the weighing bucket 20 is arranged at the end along the running direction of the weighing belt conveyor 18. The weighing belt conveyor 18 can convey the raw material into the weighing bucket 20. A transparent dust cover 49 is arranged at the end of the weighing belt conveyor 18 and covers above the weighing bucket 20.

[0077] The raw materials can be re-weighed by the weighing hopper 20 to ensure the accuracy of the raw material feeding amount. The weighing hopper 20 includes a mounting plate 32 with a weighing sensor 31, an opening and closing cylinder 33, a hopper frame 34, a hopper body 35 and an opening and closing plate 36. The weighing hopper 20 is connected to the rack of the weighing belt conveyor 18 through the mounting plate 32, the mounting plate 32 is horizontally arranged, the weighing sensor 31 and the opening and closing cylinder 33 are arranged at both ends of the mounting plate 32 respectively, the weighing sensor 31 adopts an MT1022 series sensor, the opening and closing cylinder 33 is vertically arranged, the opening and closing cylinder 33 adopts a cxsm15 series double-shaft cylinder, and the opening and closing cylinder 33 can be operated up and down.

[0078] The hopper frame 34 is arranged above the weighing sensor 31, and the cross section of the hopper frame 34 is in the shape of a “N” character. The hopper frame 34 is connected and fixed with the hopper body 35 through horizontal bending at both sides above the hopper frame 34, so as to connect the hopper frame 34 and the hopper body 35 together, and the hopper frame 34 and the hopper body 35 are arranged in front of and behind along the conveying direction of the weighing belt conveyor 18. The opening and closing control plates 371 are rotationally arranged at both sides above the hopper frame 34, and the control rod 37 is arranged between the two opening and closing control plates 371, so that the two opening and closing control plates 371 can be driven to rotate in opposite directions through the rising and falling of the control rod 37. The opening and closing cylinder 33 lifts the control rod 37 upward, so as to control the two opening and closing control plates 371 to deflect upward. The tension spring 38 is arranged vertically between each opening and closing control plate 371 and the hopper frame 34, so as to tension the opening and closing control plate 371 and drive the opening and closing control plate 371 to deflect downward, and when the opening and closing control plate 371 deflects upward, the tension spring 38 is in a lengthened state.

[0079] The hopper body 35 is open at the top and the bottom, and the opening and closing plates 36 are hingedly arranged at both sides of the lower end of the hopper body 35, and the two opening and closing plates 36 are in a double-leaf door structure, so as to control the opening and closing of the lower end of the hopper body 35 through the opening and closing of the opening and closing plates 36. The front connecting rod 39 is hingedly arranged between the two opening and closing plates 36, and the number of the front connecting rod 39 is two, and the front connecting rod 39 is arranged outside the hopper body 35 at both sides, so as to realize the linkage control of the two opening and closing plates 36 through the front connecting rod 39. In order to facilitate the swing control of the opening and closing plate 36, the rear connecting rod 40 is hingedly arranged between the opening and closing plate 36 close to the hopper frame 34 and the opening and closing control plate 371, and each opening and closing control plate 371 corresponds to one rear connecting rod 40, so as to realize the opening and closing control of the opening and closing plate 36 through the forward and reverse rotation of the opening and closing control plate 371.

[0080] As can be seen, in addition to the mounting plate 32, the opening and closing cylinder 33 and the weighing sensor 31, the rest of the components of the weighing hopper 20 are arranged on the weighing sensor 31, that is, the weight of the rest of the components is applied to the weighing sensor 31. When the raw materials are put into the weighing hopper 20, the opening and closing cylinder 33 is in the retracted state, the opening and closing control plate 371 is pulled by the tension spring 38 to swing downward, the opening and closing control plate 371 drives an opening and closing plate 36 to close through the rear connecting rod 40, the opening and closing plate 36 is connected through the front connecting rod 39, and then the two opening and closing plates 36 are closed at the same time, so that the lower end of the hopper body 35 is closed, at this time, the raw materials can be put into the hopper body 35. During the process of the raw materials entering the hopper body 35, the weighing sensor 31 monitors the weight of the raw materials in real time, and the weighing belt machine 18 stops running when the set weight is reached; at this time, the opening and closing cylinder 33 is extended and the control rod 37 is lifted upward, driving the opening and closing control plate 371 to swing upward, and under the action of the rear connecting rod 40 and the front connecting rod 39, the opening and closing plate 36 is opened at the same time, releasing the raw materials in the hopper body 35.

[0081] The raw materials weighed by the weighing hopper 20 enter the rotary material spreading device 2 downward, and the rotary material spreading device 2 can uniformly throw the raw materials into the mold. The rotary material spreading device 2 includes a support bent plate 201, a bearing seat 202, a driving motor 203 and a material spreading hopper 204 controlled by the driving motor 203. One end of the support bent plate 201 is connected to the support plate 3, and the other end is bent and connected to the frame of the weighing belt machine 18. Specifically, the support bent plate 201 is bent into a “U” shape, the horizontal end of the support bent plate 201 is connected and fixed with the support plate 3, and the vertical end of the support bent plate 201 is connected and fixed with the frame of the weighing belt machine 18.

[0082] The bearing seat 202 and the driving motor 203 are arranged on the support bent plate 201. When the driving motor 203 is installed, the motor mounting seat 41 is arranged on the support bent plate 201, the driving motor 203 is arranged on the motor mounting seat 41, the bearing seat 202 is arranged on one side of the motor mounting seat 41, and the bearing seat 202 is a rotary bearing structure. The material spreading hopper 204 is arranged in the bearing seat 202, and under the action of the bearing seat 202, the material spreading hopper 204 can rotate. The material spreading hopper 204 and the driving motor 203 are driven in transmission, and the rotation of the material spreading hopper 204 can be controlled by the driving motor 203.

[0083] The belt drive adopts a belt, that is, a belt wheel is arranged on the output shaft of the driving motor 203 and the outer part of the material scattering hopper 204. The two belt wheels are different in diameter and are connected by a belt. In order to adjust the tightness of the belt, guide wheel shafts 42 are adjustably arranged on both sides of the mounting plate 32. Specifically, long strip holes are symmetrically formed on both sides of the mounting plate 32, and each long strip hole is provided with a guide wheel shaft 42. The guide wheel shaft 42 is a stepped shaft, the large-diameter end of the guide wheel shaft 42 is located below the mounting plate 32, the small-diameter end of the guide wheel shaft 42 passes through the long strip hole and is located above the mounting plate 32 and is connected with a nut. After the nut is tightened, the guide wheel shaft 42 is fixed. After the nut is loosened, the position of the guide wheel shaft 42 can be adjusted within the range of the long strip hole. Three bearings are arranged on the large-diameter end of the guide wheel shaft 42, and the bearings are in contact with the belt. The tightness of the belt can be changed by the cooperation and clamping of the two guide wheel shafts 42.

[0084] The material scattering hopper 204 is upwardly connected with the weighing hopper 20, and the raw material in the weighing hopper 20 directly falls downwardly into the material scattering hopper 204. Three material outlets 43 are arranged on the bottom end edge of the material scattering hopper 204, and a mold is downwardly connected with the material outlet 43. Through the rotation of the material scattering hopper 204, the raw material can be uniformly put into the mold. Specifically, the material scattering hopper 204 comprises a rotating inner ring segment 44, a feeding cone ring segment 45 and a guide material cone ring segment 46, which are arranged in sequence from top to bottom.

[0085] The rotating inner ring segment 44 is a circular ring pipe body, and is connected with the bearing seat 202 and driven by the driving motor 203. The upper end of the rotating inner ring segment 44 protrudes upwardly from the bearing seat 202 and is bolted with the feeding cone ring segment 45, which is a conical tubular body with a large upper end and a small lower end. The lower end of the rotating inner ring segment 44 protrudes downwardly from the bearing seat 202 and is bolted with the guide material cone ring segment 46, so that the feeding cone ring segment 45, the rotating inner ring segment 44 and the guide material cone ring segment 46 rotate together. The guide material cone ring segment 46 is a circular ring body with a “[” shaped cross section, and is horizontally arranged, so as to close the bottom of the rotating inner ring segment 44. The upper plane edge of the guide material cone ring segment 46 is provided with the material outlet 43, and the middle part of the guide material cone ring segment 46 is conically protruded upwardly into the rotating inner ring segment 44.

[0086] In order to improve the smoothness of the material scattering, a scraper 47 is arranged outside the bearing seat 202. The middle part of the scraper 47 is arranged in a bent manner along the inner wall of the material scattering hopper 204, and the scraper 47 has a gap with the inner wall of the material scattering hopper 204, so that the scraper 47 is in a fixed state, but does not affect the rotation of the material scattering hopper 204. Specifically, the scraper 47 is a rod body bent in an approximately “M” shape. The both ends of the scraper 47 are connected with and fixed to the bearing seat 202. The middle part of the scraper 47 is arranged in an inclined downward manner along the inner side wall of the feeding cone ring segment 45, then is arranged in a vertical downward manner along the guide material cone ring segment 46, and finally is arranged in an inclined upward manner along the middle part of the guide material cone ring segment 46.

[0087] The principle of the present application is that the mixed raw materials are poured into the lifting hopper 11, the lifting hopper 11 is driven by the chain lifting unit 8 to move upward until the raw materials are poured into the feeding hopper 15, and the lifting hopper 11 falls to the initial state. The lifting hopper 11 can independently move up and down without affecting the belt weighing crusher 5. The raw materials in the feeding hopper 15 directly enter the crusher 17 downward, the crushing unit 174 is driven to rotate by the operation of the speed reducer motor 173, and the raw materials are fully stirred and crushed, and then the raw materials meeting the requirements are screened out through the screen plate 172 and enter the storage hopper 19 downward.

[0088] The raw materials fall on the conveying belt of the weighing belt conveyor 18 and accumulate in the storage hopper 19, and the weighing belt conveyor 18 monitors the weight of the raw materials during this process. When the set weight is reached, the crusher 17 stops running. The pneumatic gate 28 is opened, and the weighing belt conveyor 18 is operated to drive the raw materials in the storage hopper 19 to move out. During the process of moving out, the raw materials will pass through the material level baffle 27 to ensure that the raw materials flow out of the storage hopper 19 at a certain thickness and flow to the weighing hopper 20. During the process of feeding the raw materials into the weighing hopper 20, the weighing hopper 20 monitors the weight of the raw materials, and when the set weight is reached, the weighing belt conveyor 18 stops. The weighing hopper 20 opens to discharge the raw materials into the scattering hopper 204, and the driving motor 203 operates to drive the scattering hopper 204 to rotate, and the three material ports 43 uniformly distributed in the ring uniformly discharge the raw materials into the mold, thereby realizing the purpose of quantitative feeding and rotating uniform feeding.

[0089] In order to optimize the product structure and realize complete discharge of the scattering hopper 204, a brushing mechanism 48 is further arranged on the supporting plate 3. The brushing mechanism 48 includes a material plate 481, a brushing cylinder 482 installed on the material plate 481, and a round head brush 483 controlled by the brushing cylinder 482. The brushing cylinder 482 drives the round head brush 483 to move up and down, and the round head brush 483 can move down to the upper plane position of the material guiding cone ring segment 46 to brush the raw materials at the position of the material port 43, thereby avoiding the raw materials remaining in the scattering hopper 204.

[0090] The above-described embodiments are only preferred embodiments of the present application and do not limit the scope of the present application. Any equivalent changes or modifications made in accordance with the structure, features and principles described in the patent scope of the present application shall be included in the patent scope of the present application.

Claims

1. A dosing and rotary feed system, characterized in that, It includes a quantitative feeding device (1) for raw material feeding, a rotary material scattering device (2) for raw material feeding, and a support plate (3); The quantitative feeding device (1) includes a bucket elevator (4) and a belt weighing crusher (5), the belt weighing crusher (5) includes a mounting bracket (14), a feeding hopper (15), a dust cover (16), a crusher (17), a weighing belt machine (18), a storage hopper (19), and a weighing hopper (20); the mounting bracket (14) is provided above the feeding hopper (15), the feeding hopper (15) is communicated with the bucket elevator (4), the dust cover (16) is provided above the feeding hopper (15), and the crusher (17) is communicated below the feeding hopper (15), and the outlet of the crusher (17) is a screen structure; The weighing belt machine (18) is arranged in the mounting bracket (14), the storage hopper (19) is arranged above the weighing belt machine (18), the storage hopper (19) is communicated with the outlet of the crusher (17) upward and the weighing belt machine (18) downward, the weighing belt machine (18) is horizontally arranged, the storage hopper (19) is arranged along the conveying direction of the weighing belt machine (18), the storage hopper (19) is fixedly connected with the rack of the weighing belt machine (18) on both sides, the storage hopper (19) is outwardly expanded in an inverted "eight" shape above, and is connected with the crusher (17); the storage hopper (19) below is a pipe structure with a "sun" shaped cross section; A material level sensor (26) is arranged on the inner wall of the storage hopper (19), a material level baffle (27) is adjustably arranged on the middle part of the storage hopper (19), and the gap between the material level baffle (27) and the conveying belt of the weighing belt machine (18) is adjustable; a pneumatic gate (28) is arranged at the end of the storage hopper (19) along the running direction of the weighing belt machine (18), and the pneumatic gate (28) is slidingly arranged on the storage hopper (19); The weighing belt machine (18) is communicated with the weighing hopper (20), and the weighing hopper (20) is arranged on the mounting bracket (14) below one end of the weighing belt machine (18); the weighing hopper (20) includes a mounting plate (32) provided with a weighing sensor (31), an opening and closing cylinder (33), a hopper frame (34), a hopper body (35), and an opening and closing plate (36), the weighing hopper (20) is connected to the rack of the weighing belt machine (18) through the mounting plate (32), the weighing sensor (31) and the opening and closing cylinder (33) are arranged at both ends of the mounting plate (32) respectively, and the opening and closing cylinder (33) is vertically arranged; The hopper frame (34) is arranged on the weighing sensor (31), the cross section of the hopper frame (34) is "N" shaped, the hopper frame (34) is fixedly connected with the hopper body (35) on the two sides above, the opening and closing control plates (371) are rotatably arranged at the two sides of the hopper frame (34) above, a control rod (37) is arranged between the two opening and closing control plates (371), the control rod (37) is lifted upward by the opening and closing cylinder (33), and a vertically arranged tension spring (38) is arranged between each opening and closing control plate (371) and the hopper frame (34). The bucket body (35) is open at both top and bottom, and the opening and closing plates (36) are hinged to both sides of the lower end of the bucket body (35), the opening and closing plates (36) on both sides are of a double-leaf door structure, a front connecting rod (39) is hinged between the two opening and closing plates (36) to realize linkage control, and a rear connecting rod (40) is hinged between one of the opening and closing plates (36) close to the bucket frame (34) and the opening and closing control plate (371) to realize opening and closing control of the opening and closing plate (36); The rotating material scattering device (2) is arranged between the quantitative feeding device (1) and the supporting plate (3), the rotating material scattering device (2) comprises a supporting bent plate (201), a bearing seat (202), a driving motor (203) and a material scattering hopper (204) controlled by the driving motor (203), one end of the supporting bent plate (201) is connected with the supporting plate (3), and the other end is bent to be connected with the rack of the weighing belt conveyor (18); The bearing seat (202) and the driving motor (203) are arranged on the supporting bent plate (201), the material scattering hopper (204) is arranged in the bearing seat (202), the material scattering hopper (204) is connected with the weighing hopper (20) upward, a plurality of material ports (43) are arranged on the bottom end of the material scattering hopper (204), a mold is connected with the material ports (43) downward, a scraping rod (47) is arranged outside the bearing seat (202), the scraping rod (47) is arranged along the inner wall of the material scattering hopper (204) and is bent in the middle, and a gap is formed between the scraping rod (47) and the inner wall of the material scattering hopper (204).

2. The dosing and rotary feed system of claim 1, wherein, The elevator comprises an elevating support (6), a guide rail (7), a chain lifting unit (8), an elevating trolley (9) controlled by the chain lifting unit (8) and an elevating bucket (11) provided with a guide wheel (10); the elevating support (6) is vertically arranged, the guide rail (7) is arranged on one side of the elevating support (6), and the upper end of the guide rail (7) is inclined and bent towards the dust cover (16); The chain lifting unit (8) is rotatably arranged on the elevating support (6), the chain lifting unit (8) is vertically arranged, the elevating trolley (9) is slidably arranged on the elevating support (6), and the elevating bucket (11) is rotatably arranged on the elevating trolley (9), and the guide wheel (10) on the elevating bucket (11) moves along the guide rail (7).

3. The dosing and rotary feed system of claim 2, wherein, The feeding hopper (15) is a conical body structure with a large upper diameter and a small lower diameter, the dust cover (16) is a conical closed cover structure with a small upper diameter and a large lower diameter, the large-diameter end of the dust cover (16) is fixedly connected with the large-diameter end of the feeding hopper (15), the lower end of the dust cover (16) is open and communicated with the feeding hopper (15), the side of the dust cover (16) facing the bucket elevator (4) is provided with an upper dust curtain (21), and the elevating bucket (11) penetrates through the upper dust curtain (21) and is communicated with the feeding hopper (15).

4. The dosing and rotary feed system of claim 1, wherein, The crusher (17) is arranged below the feeding hopper (15), the crusher (17) comprises a feeding pipe (171), a sieve plate (172), a speed reducer motor (173), a crushing unit (174) controlled by the speed reducer motor (173) and a dustproof frame (175), the feeding pipe (171) is a rectangular pipe, the feeding pipe (171) is communicated with the outlet of the feeding hopper (15) upward, and the feeding pipe (171) is provided with the sieve plate (172) below; One side of the feeding pipe (171) is provided with the speed reducer motor (173), the feeding pipe (171) is rotatably provided with the crushing unit (174), and the sieve plate (172) is bent to be semicircular and arranged around the side of the crushing unit (174).

5. The dosing and rotary feed system of claim 4, wherein, The crushing unit (174) comprises a rotating shaft (22), a rotor disc (23) and a stirring assembly, the rotating shaft (22) is rotatably connected with the feeding pipe (171) through a bearing, one end of the rotating shaft (22) extends out of the feeding pipe (171) and is connected with the speed reducer motor (173) through a key, and a plurality of rotor discs (23) are arranged on the rotating shaft (22) in the feeding pipe (171); A plurality of stirring assemblies are uniformly arranged on the rotating shaft (22) in the feeding pipe (171), the stirring assemblies are arranged in the axial direction of the rotating shaft (22), each stirring assembly is arranged between a plurality of rotor discs (23), and each stirring assembly comprises two stirring plates (24), a crushing channel is formed between the two stirring plates (24), and the crushing channel is wide at one end and narrow at the other end; The dustproof frame (175) is arranged on the side of the feeding pipe (171), the cross section of the dustproof frame (175) is larger than that of the feeding pipe (171), the dustproof frame (175) is a rectangular frame structure formed by a plurality of dustproof curtains, and the dustproof frame (175) extends downward and abuts against the storage hopper (19).

6. The dosing and rotary feed system of claim 1, wherein, Rubber material blocking strips (25) are arranged on the bottom of the two sides of the storage hopper (19), and the rubber material blocking strips (25) are in contact with the conveying belt of the weighing belt conveyor (18).

7. The dosing and rotary feed system of claim 6, wherein, A material collecting chute (30) is further arranged on the mounting bracket (14) below the weighing belt conveyor (18), the material collecting chute (30) is arranged obliquely downward to one side of the bucket elevator (4), and the material collecting chute (30) is communicated with the bucket elevator (4).

8. The dosing and rotary feed system of claim 1, wherein, The weighing hopper (20) is arranged at the end in the running direction of the weighing belt conveyor (18), the weighing belt conveyor (18) and the weighing hopper (20) are communicated upward and downward, and a transparent dustproof cover (49) is further arranged on the end of the weighing belt conveyor (18), the transparent dustproof cover (49) covers the weighing hopper (20) above.

9. The dosing and rotary feed system of claim 1, wherein, The support bent plate (201) is bent to be "L" shaped, one horizontal end of the support bent plate (201) is connected and fixed with the support plate (3), and one vertical end of the support bent plate (201) is connected and fixed with the rack of the weighing belt conveyor (18); a motor mounting seat (41) is arranged on the support bent plate (201), the driving motor (203) is arranged on the motor mounting seat (41), and the bearing seat (202) is arranged on one side of the motor mounting seat (41); The material scattering hopper (204) comprises a rotating inner ring segment (44), a feeding cone ring segment (45) and a guide cone ring segment (46), the rotating inner ring segment (44) is a circular ring body, the rotating inner ring segment (44) is connected with the bearing seat (202), and the rotating inner ring segment (44) is belt driven with the driving motor (203); The upper end of the rotating inner ring segment (44) is upwardly extended out of the bearing seat (202) and is bolted with the feeding cone ring segment (45), the feeding cone ring segment (45) is a conical tubular body with a large upper end and a small lower end, the lower end of the rotating inner ring segment (44) is downwardly extended out of the bearing seat (202) and is bolted with the guide cone ring segment (46), the guide cone ring segment (46) is a circular ring body with a "[ " shape in cross section, the guide cone ring segment (46) is horizontally arranged and seals the bottom of the rotating inner ring segment (44), the edges of the guide cone ring segment (46) are all provided with the material ports (43), and the middle part of the guide cone ring segment (46) is conically upwardly protruded into the rotating inner ring segment (44); The both ends of the scraping rod (47) are connected and fixed with the bearing seat (202), the middle part of the scraping rod (47) is obliquely downwardly arranged along the inner side wall of the feeding cone ring segment (45), then is vertically downwardly arranged along the guide cone ring segment (46), and finally is obliquely upwardly arranged along the middle part of the guide cone ring segment (46).

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