Quantitative and rotary feeding system

Abstract

The invention relates to a quantitative and rotary feeding system which comprises a quantitative feeding device, a rotary scattering device and a supporting plate. The quantitative feeding device comprises a bucket elevator and a belt weighing crusher; the belt weighing crusher comprises a mounting bracket, a feeding hopper, a dust cover, a crusher, a weighing belt conveyor, a storage hopper and a weighing hopper; a feed hopper is arranged above the mounting bracket, a dust cover is arranged above the feed hopper, and the lower part of the feed hopper is communicated with a crusher; a weighing belt conveyor is arranged in the mounting bracket, a storage hopper is arranged above the weighing belt conveyor, and the weighing belt conveyor is communicated with a weighing hopper; a rotary material scattering device is arranged between the quantitative feeding device and the supporting plate and comprises a supporting bent plate, a bearing seat, a driving motor and a material scattering hopper controlled by the driving motor; a bearing seat and a driving motor are arranged on the supporting bent plate, a scattering hopper is arranged in the bearing seat, and a plurality of material ports are formed in the edge of the bottom end of the scattering hopper. According to the feeding device, the occupied space can be reduced, and the feeding uniformity can be improved.

Description

Technical Field

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

[0002] Abrasive tools are tools used for grinding, lapping and polishing. Grinding wheels and grinding wheels are both a type of abrasive tools. Taking grinding wheel manufacturing as an example, the number of grinding wheel forming equipment is increasing, and all of them have replaced the high-intensity manual operations with automated machinery and equipment. Especially in the feeding process of grinding wheel raw materials, conventional operations require manual mixing of raw materials, weighing and pouring into the mold to facilitate subsequent pressing and molding. Frequent manual repetitive operations are labor-intensive and affect production efficiency.

[0003] In view of this, mechanical equipment for automatic feeding has gradually been proposed on the market, such as the grinding wheel forming machine conveying and pushing scraping system disclosed in patent publication number CN106002667B, which is equipped with a grinding wheel forming machine lifting and conveying mechanism, and through the cooperation of belt conveyors and sensors, etc., the feeding process does not require manual intervention throughout the whole process, the degree of automation is very high, and the feeding efficiency is greatly improved; it is equipped with a grinding wheel forming machine pushing scraping mechanism, which combines traditional rotary scraping and pushing scraping together, and the material scraping efficiency is high. However, the whole machine occupies a large space, and uses a linear reciprocating vibrator and a vibrating feeding trough as a feeding means, which is greatly affected by material properties and material pressure, and needs to be adjusted frequently during use.

[0004] Another example is the resin abrasive fixed weight feeding device disclosed in patent publication number CN212942835U. Under the vibration of the vibration unit, the loose resin abrasive is horizontally transported along the feeding hopper to the receiving hopper; the resin abrasive that reaches the receiving hopper is again vibrated by the linear vibrator and falls into the feeding hopper more evenly. A sensor is set under the feeding hopper to measure the weight immediately. After the resin abrasive reaches the specified weight, the cylinder drives the feeding hopper to flip, 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 flips and directly dumps the raw materials into the mold, making it difficult to achieve uniform feeding. Summary of the invention

[0005] In order to solve the problems that the existing feeding equipment occupies a large space and has poor feeding uniformity, the present invention provides a quantitative and rotary feeding system, which can realize uninterrupted continuous feeding, and crush, filter and weigh the raw materials to ensure the normal production. At the same time, a rotary spreading method is used for feeding, which improves the uniformity of feeding, ensures the uniform state of the raw materials in the mold, and facilitates the scraping operation of the subsequent process.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: Quantitative and rotary feeding system, including a quantitative feeding device for feeding raw materials, a rotary spreading device for discharging raw materials and a support plate; 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 feed hopper, a dust cover, a crusher, a weighing belt conveyor, a storage hopper and a weighing hopper. The feed hopper is arranged above the mounting bracket, and the feed hopper is connected with the bucket elevator to facilitate receiving the raw materials. The dust cover is arranged above the feed hopper to facilitate dust flying when dumping the raw materials. The feed hopper is connected to the crusher below, and the crusher outlet is a screen structure to facilitate filtering the raw materials. The weighing belt conveyor is arranged in the mounting bracket, and the storage hopper is arranged above the weighing belt conveyor, so as to facilitate the raw materials flowing out of the crusher to be directed to the weighing belt conveyor. The storage hopper is connected to the crusher outlet upward and to the weighing belt conveyor downward. The weighing belt conveyor is connected to the weighing hopper, which is arranged on the mounting bracket below one end of the weighing belt conveyor, so as to facilitate the re-weighing of the raw materials. The rotating material spreading device is arranged between the quantitative feeding device and the support plate, and the rotating material spreading device comprises a supporting bent plate, a bearing seat, a driving motor and a material spreading hopper controlled by the driving motor, one end of the supporting bent plate is connected to the supporting plate, and the other end is bent and connected to the frame of the weighing belt conveyor; The bearing seat and the driving motor are arranged on the supporting bent plate, and the hopper is arranged in the bearing seat to facilitate the rotation of the hopper. The hopper is connected to the weighing hopper upwards, and a plurality of material ports are provided on the edge of the bottom end of the hopper. The material ports are connected to the mold downwards to facilitate uniform discharge of materials into the mold through the material ports. A scraper rod is arranged outside the bearing seat, and the middle part of the scraper rod is bent and arranged along the inner wall of the hopper. There is a gap between the scraper rod and the inner wall of the hopper, which does not affect the rotation of the hopper and ensures smooth discharge of materials from the hopper.

[0007] Furthermore, the hoist comprises a lifting bracket, a guide rail, a chain lifting unit, a lifting trolley controlled by the chain lifting unit, and a lifting bucket with guide wheels; the lifting bracket is arranged vertically, the guide rail is arranged on one side of the lifting bracket, and the upper end of the guide rail is inclined and bent toward the dust cover to facilitate changing the opening direction of the lifting bucket; The chain lifting unit is rotatably arranged on the lifting bracket, and the chain lifting unit is arranged vertically. The lifting trolley is slidably arranged on the lifting bracket, and the lifting bucket is rotatably arranged on the lifting trolley. The guide wheels on the lifting bucket move along the guide track, and the lifting trolley can conveniently drive the lifting bucket to move up and down.

[0008] Furthermore, the feed hopper is a conical structure that is larger at the top and smaller at the bottom, and the dust cover is a conical closed cover structure that is smaller at the top and larger at the bottom. The large diameter end of the dust cover is connected and fixed to the large diameter end of the feed hopper, and the lower end opening of the dust cover is connected to the feed hopper. The dust cover is open on the side facing the bucket elevator, and an upper dust curtain is provided on the side of the dust cover facing the bucket elevator. The elevator bucket is connected to the feed hopper through the upper dust curtain, which does not affect the dumping operation of the elevator bucket and can prevent dust from floating out.

[0009] Furthermore, the crusher is arranged below the feed hopper, and comprises a feed pipe, a screen plate, a reduction motor, a crushing unit controlled by the reduction motor, and a dustproof frame. The feed pipe is a rectangular tube, and the feed pipe is upwardly connected to the feed hopper outlet. The screen plate is arranged below the feed pipe to facilitate filtering. The reduction motor is arranged at one side of the discharge pipe, the crushing unit is rotatably arranged in the discharge pipe, and the screen plate is bent into a semicircle and arranged around the crushing unit, thereby increasing the screening area.

[0010] Furthermore, the crushing unit includes a rotating shaft, a rotor disc and a stirring assembly. The rotating shaft is rotatably connected to a feed pipe through a bearing. One end of the rotating shaft extends out of the feed pipe and is key-connected to a reduction motor to facilitate driving the rotating shaft. A plurality of rotor discs are arranged on the rotating shaft in the feed pipe to facilitate driving the rotor discs to operate together. The plurality of rotor discs are spaced apart along the axial direction of the rotating shaft. A plurality of stirring assemblies are evenly distributed outside the rotating shaft in the feeding tube, and the stirring assemblies are arranged along the axial direction of the rotating shaft. Each stirring assembly is arranged between a plurality of rotor disks, and each stirring assembly includes two stirring plates, and 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; The dustproof frame is arranged around the discharge pipe to limit the flow of dust. The cross section of the dustproof frame is larger than the cross section of the discharge pipe. The dustproof frame is a rectangular frame structure formed by multiple dustproof curtains. The dustproof frame extends downward to abut against the storage hopper.

[0011] Furthermore, the weighing belt conveyor is arranged horizontally, and the storage hopper is arranged along the conveying direction of the weighing belt conveyor. Both sides of the storage hopper are connected and fixed to the frame of the weighing belt conveyor. The top of the storage hopper is an inverted "eight"-shaped outward expansion structure to connect with the crusher. The bottom of the storage hopper is a tube 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 to prevent raw materials from flowing out of the storage hopper.

[0012] Furthermore, a level sensor is provided on the inner wall of the storage hopper for monitoring the thickness of the material layer in the storage hopper. A level baffle is adjustably arranged up and down in the middle of the storage hopper to facilitate controlling the thickness of the material layer. The gap between the level baffle and the conveyor belt of the weighing belt conveyor is adjustable. Along the running direction of the weighing belt conveyor, a pneumatic gate is provided at the end of the storage hopper. The pneumatic gate is slidably arranged up and down on the storage hopper to facilitate controlling whether the raw material can flow out of the storage hopper. A receiving chute is also provided on the mounting bracket below the weighing belt conveyor. The receiving chute is arranged obliquely downward towards the bucket elevator side and is connected to the bucket elevator. The raw material remaining on the conveyor belt of the weighing belt conveyor can be guided by the receiving chute into the lifting bucket.

[0013] Furthermore, the weighing hopper is arranged at the end along the running direction of the weighing belt conveyor. The weighing belt conveyor and the weighing hopper are connected up and down. A transparent dust-proof cover is also provided at the end of the weighing belt conveyor. The transparent dust-proof cover covers the weighing hopper. The weighing hopper includes 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 frame of the weighing belt conveyor through the mounting plate. The weighing sensor and the opening and closing cylinder are respectively arranged at both ends of the mounting plate. The opening and closing cylinder is arranged vertically to facilitate up and down telescopic operation.

[0014] Furthermore, the hopper frame is arranged on the weighing sensor. The cross-section of the hopper frame is in a "U" shape. The two sides above the hopper frame are horizontally bent and then connected and fixed to the hopper body. Opening and closing control plates are rotatably arranged at the bent parts on both sides above the hopper frame. A control rod is arranged between the two opening and closing control plates to facilitate controlling the rotation of the two opening and closing control plates together. The opening and closing cylinder jacks up the control rod upwards. A vertically arranged tension spring is arranged between each opening and closing control plate and the hopper frame to urge the control rod to move downward and reset. The hopper body is open at both the top and the bottom. Hinged joints are provided at both sides of the lower end of the hopper body. The two side opening and closing plates are of a double-leaf door structure. A front connecting rod is hinged between the two opening and closing plates to achieve linkage control, facilitating the simultaneous opening and closing of the two opening and closing plates. A rear connecting rod is hinged between one opening and closing plate close to the hopper frame and the opening and closing control plate to achieve the opening and closing control of the opening and closing plate. Through the swinging of the opening and closing control plate and the transmission of the rear connecting rod, it is convenient to achieve the opening and closing of the opening and closing plate.

[0015] Furthermore, the support bent plate is bent in a "ㄣ" shape. The horizontal end of the support bent plate is connected and fixed to the support plate, and the vertical end of the support bent plate is connected and fixed to the frame of the weighing belt conveyor. A motor mounting seat is provided on the support bent plate. The driving motor is arranged on the motor mounting seat. Bearing seats are arranged at intervals on one side of the motor mounting seat. The material spreading hopper comprises a rotating inner ring section, a feeding cone ring section and a guiding cone ring section, wherein the rotating inner ring section is a torus, the rotating inner ring section is connected to a bearing seat, and the rotating inner ring section is driven by a driving motor belt; The upper end of the rotating inner ring segment extends upward from the bearing seat and is bolted to the feed cone ring segment. The feed cone ring segment is a conical tube with a larger upper portion and a smaller lower portion. The lower end of the rotating inner ring segment extends downward from the bearing seat and is bolted to the guide cone ring segment. The guide cone ring segment is a circular ring body with a cross section in the shape of "[". The guide cone ring segment is arranged horizontally and closes the bottom of the rotating inner ring segment. The edges of the guide cone ring segment are all provided with the material ports. The middle of the guide cone ring segment is conically convex upward into the rotating inner ring segment. The two ends of the scraper rod are connected and fixed to the bearing seat, the middle part of the scraper rod is arranged obliquely downward along the inner wall of the feed cone ring section, then arranged vertically downward along the guide cone ring section, and finally arranged obliquely upward along the middle part of the guide cone ring section.

[0016] Through the above technical solution, the beneficial effects of the present invention are: The structure of the present invention is reasonable. The bucket elevator can feed materials into the belt weighing crusher at any time, ensuring the continuous operation of the belt weighing crusher. The bucket elevator and the belt weighing crusher are arranged side by side, occupying a small space. When the lifting bucket is feeding, the raw materials enter the feed hopper, which increases the feeding efficiency and is more convenient to use. The dust cover can limit the flow of dust and ensure the working environment.

[0017] In the present invention, the raw materials in the feed hopper flow directly to the crusher, which is convenient for mixing and crushing the raw materials to avoid agglomeration of the raw materials. The raw materials flow out of the crusher through the screen plate to ensure that the raw materials flow out meet the production requirements. The raw materials flowing out of the screen plate flow to the weighing belt conveyor after being guided by the storage hopper. The weighing belt conveyor can weigh the raw materials. At the same time, the material level sensor, material level baffle and start gate 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.

[0018] The weighing hopper of the present invention has the functions of storing, unloading and weighing raw materials, which facilitates and accurately controls the amount of raw materials put in. The rotating spreading device is driven by a driving motor to rotate the spreading hopper, and the bottom of the spreading hopper drives three evenly arranged material ports. During the rotation of the spreading hopper, the raw materials flow evenly through the material ports into the mold, thereby achieving uniform feeding. A non-rotating hanging rod is also arranged in the spreading hopper. On the basis of the rotating spreading hopper and the stationary scraper rod, the scraper rod can stir the raw materials, thereby improving the smoothness of the discharging of the spreading hopper. In this way, the automated operation of loading, weighing and feeding is realized, the feeding efficiency is improved, and the quality and stability of the product can also be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the quantitative and rotary feeding system of the present invention.

[0020] Figure 2 The quantitative and rotary feeding system of the present invention Figure 1 Schematic diagram of the splitting.

[0021] Figure 3 It is one of the axonometric views of the quantitative feeding device of the quantitative and rotary feeding system of the present invention.

[0022] Figure 4 This is the second axonometric diagram of the quantitative feeding device of the quantitative and rotary feeding system of the present invention.

[0023] Figure 5 This is one of the cross-sectional views of the bucket elevator of the quantitative and rotary feeding system of the present invention, in which the lifting chain is omitted.

[0024] Figure 6 This is the second cross-sectional view of the bucket elevator of the quantitative and rotary feeding system of the present invention, in which the lifting chain is omitted.

[0025] Figure 7 It is a front view of the belt weighing crusher of the quantitative and rotary feeding system of the present invention.

[0026] Figure 8 It is a cross-sectional view of a belt weighing crusher of the quantitative and rotary feeding system of the present invention, in which the dust cover is omitted.

[0027] Fig. 9 It is a cross-sectional view of a crusher of the quantitative and rotary feeding system of the present invention.

[0028] Fig.10 It is an axonometric view of the storage hopper of the quantitative and rotary feeding system of the present invention.

[0029] Fig.11 It is an axonometric view of a belt weighing crusher of the quantitative and rotary feeding system of the present invention.

[0030] Fig.12 It is one of the isometric views of the weighing bucket of the quantitative and rotary feeding system of the present invention.

[0031] Fig.13 This is the second axonometric view of the weighing bucket of the quantitative and rotary feeding system of the present invention.

[0032] Fig.14 This is the third axonometric drawing of the weighing bucket of the quantitative and rotary feeding system of the present invention.

[0033] Fig.15 It is a cross-sectional view of the weighing bucket of the quantitative and rotary feeding system of the present invention.

[0034] Fig.16 It is an axonometric view of a rotary material spreading device of the quantitative and rotary material feeding system of the present invention.

[0035] Fig.17 The quantitative and rotary feeding system of the present invention Fig.16 Magnified image of .

[0036] Fig.18 It is a cross-sectional view of the rotary material spreading device of the quantitative and rotary feeding system of the present invention.

[0037] Fig.19 It is an axonometric diagram of the brushing mechanism of the quantitative and rotary feeding system of the present invention.

[0038] The numbers in the attached drawings are: 1 quantitative feeding device, 2 rotating spreading device, 201 supporting bent plate, 202 bearing seat, 203 driving motor, 204 spreading hopper, 3 supporting plate, 4 bucket elevator, 5 belt weighing crusher, 6 lifting bracket, 61 upper top plate, 62 lower bottom plate, 63 bracket channel steel, 64 reinforcing plate, 65 chain guard, 7 guide rail, 8 chain lifting unit, 81 driving sprocket group, 82 driven sprocket group, 83 reducer, 9 lifting trolley, 10 guide wheel, 11 lifting bucket, 12 supporting wheel, 13 fixed plate, 14 mounting bracket, 15 feeding hopper, 16 dust cover, 17 crusher, 171 discharge pipe, 172 screen plate, 173 reduction motor, 174 crushing unit, 175 dust frame, 1 8 weighing belt conveyor, 19 storage hopper, 20 weighing hopper, 21 upper dust curtain, 22 rotating shaft, 23 rotor disk, 24 stirring plate, 25 rubber material baffle, 26 material level sensor, 27 material level baffle, 28 pneumatic gate, 29 brush plate, 30 receiving chute, 31 weighing sensor, 32 mounting plate, 33 opening and closing cylinder, 34 bucket frame, 35 bucket body, 36 opening and closing plate, 37 control rod, 371 opening and closing control board, 38 tension spring, 39 front connecting rod, 40 rear connecting rod, 41 motor mounting seat, 42 guide wheel shaft, 43 material port, 44 rotating inner ring segment, 45 feed cone ring segment, 46 guide cone ring segment, 47 scraper rod, 48 brushing mechanism, 481 material plate, 482 brushing cylinder, 483 round head brush, 49 transparent dust cover. DETAILED DESCRIPTION

[0039] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings: like Figure 1 to Figure 19 As shown, the quantitative and rotary feeding system includes a quantitative feeding device 1 for feeding raw materials, a rotary scattering device 2 for discharging raw materials, and a support plate 3. The rotary scattering device 2 is arranged between the quantitative feeding device 1 and the support plate 3, and the rotary scattering device 2 is supported by the quantitative feeding device 1 and the support plate 3 to ensure the reliability of the installation of the rotary scattering device 2. The quantitative feeding device 1 supplies raw materials to the rotary scattering device 2, and the rotary scattering device 2 uses a rotary throwing method to evenly throw the raw materials into the mold to achieve uniform feeding.

[0040] The quantitative feeding device 1 includes a bucket elevator 4 and a belt weighing crusher 5. The bucket elevator 4 is used to transport the raw materials from a low place to a high place and transport them to the belt weighing crusher 5. The bucket elevator 4 includes a lifting bracket 6, a guide rail 7, a chain lifting unit 8, a lifting trolley 9 controlled by the chain lifting unit 8, and a lifting bucket 11 with a guide wheel 10.

[0041] The lifting bracket 6 is arranged vertically, and the lifting bracket 6 includes an upper top plate 61, a lower bottom plate 62, a bracket channel steel 63, a reinforcing plate 64 and a chain guard 65. Two bracket channel steels 63 are arranged between the upper top plate 61 and the lower bottom plate 62. The two bracket channel steels 63 are arranged symmetrically, and the upper top plate 61 and the lower bottom plate 62 can be connected and fixed. At least three reinforcing plates 64 are evenly arranged between the two bracket channel steels 63, and the reinforcing plates 64 are plates bent in a "[" shape. A chain guard 65 is also arranged between the two bracket channel steels 63, and the chain guard 65 covers the three reinforcing plates 64.

[0042] A guide rail 7 is provided on one side of the lifting bracket 6. The guide rail 7 is a channel steel structure. The guide rail 7 is connected and fixed to a bracket channel steel 63. The guide rail 7 is arranged vertically. The vertical height of the guide rail 7 is less than the bracket channel steel 63. The upper end of the guide rail 7 is bent and tilted toward the side of the belt weighing crusher 5. A chain lifting unit 8 is rotatably provided on the lifting bracket 6. The chain lifting unit 8 is arranged vertically. The chain lifting unit 8 can drive the lifting trolley 9 to move up and down.

[0043] The chain lifting unit 8 includes a driving sprocket group 81, a driven sprocket group 82, a reducer 83 with a brake, and a lifting chain. The driving sprocket group 81 and the reducer 83 are both arranged on the upper top plate 61, and the driving sprocket group 81 and the reducer 83 are key-connected, and the reducer 83 can drive the driving sprocket group 81 to operate, and the reducer 83 adopts the nmrv110 series reducer 83. The driven sprocket group 82 is arranged on the lower bottom plate 62, and the driven sprocket group 82 and the driving sprocket group 81 correspond to each other up and down, and a lifting chain is connected between the driven sprocket group 82 and the driving sprocket group 81, thereby driving the lifting chain to operate.

[0044] The lifting bracket 6 is provided with a lifting trolley 9 that slides up and down. The lifting trolley 9 is provided with four supporting wheels 12. The four supporting wheels 12 are arranged in pairs. The two supporting wheels 12 in each group are arranged at intervals up and down, and roll along a bracket channel steel 63, thereby realizing the lifting trolley 9 to move up and down between the two bracket channel steels 63. The lifting trolley 9 is connected to the lifting chain, and the lifting chain drives the lifting trolley 9 to run. The up and down movement of the lifting trolley 9 can be controlled by the forward and reverse operation of the reducer 83.

[0045] A lifting bucket 11 is rotatably provided on the lifting trolley 9. The lifting bucket 11 is used to lift the raw materials required for mold manufacturing. The upper end of the lifting bucket 11 is open and the lower end is closed. Specifically, a fixed plate 13 is rotatably provided on the lifting trolley 9, and the lifting bucket 11 is provided 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 track 7, so that when the lifting bucket 11 is at the bottom of the lifting bracket 6, it is restricted by the guide wheel 10 and the lifting bucket 11 does not rotate. Once the lifting bucket 11 gradually moves up driven by the lifting chain, when the guide wheel 10 moves to the bend of the guide track 7, the lifting bucket 11 rotates, and as the lifting bucket 11 continues to move up, the opening of the lifting bucket 11 tilts downward, and the raw materials in the lifting bucket 11 are dumped into the belt weighing crusher 5.

[0046] The belt weighing crusher 5 is used for storing, crushing and weighing raw materials, that is, after receiving the raw materials delivered by the bucket elevator 4, the belt weighing crusher 5 stores, crushes and weighs the raw materials, and then delivers them to the rotary spreading device 2. The belt weighing crusher 5 includes a mounting bracket 14, a feed hopper 15, a dust cover 16, a crusher 17, a weighing belt conveyor 18, a storage hopper 19 and a weighing hopper 20.

[0047] The mounting bracket 14 is a rectangular frame formed by welding square tubes, and has a certain height, and is lower than the guide rail 7. A feed hopper 15 is arranged above the mounting bracket 14, and the feed hopper 15 is a conical structure with a large upper portion and a small lower portion, and the feed hopper 15 is opened at the upper and lower portions; the feed hopper 15 is connected to the bucket elevator 4, and specifically, the raw materials transported by the elevator bucket 11 are poured into the feed hopper 15, and are temporarily stored by the feed hopper 15.

[0048] In order to prevent the dust generated when the lifting bucket 11 dumps the raw materials from scattering randomly, a dust cover 16 is arranged above the feed hopper 15, and the upper end of the guide track 7 is bent toward the dust cover 16. The dust cover 16 is a conical closed cover structure with a small top and a large bottom. The longitudinal section of the dust cover 16 is a right-angled trapezoid. The large diameter end of the dust cover 16 is connected and fixed to the large diameter end of the feed hopper 15, and the lower end opening of the dust cover 16 is connected to the feed hopper 15. The dust cover 16 opens to one side of the bucket elevator 4, and the lifting bucket 11 dumps the raw materials into the feed hopper 15 through the opening. An upper dust curtain 21 is arranged at the opening of the dust cover 16 on the side facing the bucket elevator 4. The lifting bucket 11 passes through the upper dust curtain 21 and is connected to the feed hopper 15. The upper dust curtain 21 does not affect the lifting bucket 11 from extending into the dust cover 16.

[0049] Crusher 17 is arranged below feed hopper 15, and feed hopper 15 is connected to crusher 17 below, and the outlet of crusher 17 is a screen structure. The raw materials entering feed hopper 15 are directly passed downward into crusher 17, and flow out of crusher 17 after being stirred and crushed by crusher 17 and filtered.

[0050] The crusher 17 includes a feed pipe 171, a sieve plate 172, a reduction motor 173, a crushing unit 174 controlled by the reduction motor 173, and a dustproof frame 175. The feed pipe 171 is a rectangular tube, and is connected to the outlet of the feed hopper 15 upward. A sieve plate 172 is arranged below the feed pipe 171. After being filtered by the sieve plate 172, the raw materials flow out of the feed pipe 171. A reduction motor 173 is arranged on one side of the feed pipe 171. The reduction motor 173 is located outside the feed pipe 171. The reduction motor 173 adopts a nmrv063 series motor. A crushing unit 174 is rotatably arranged in the feed pipe 171. The reduction motor 173 can drive the crushing unit 174 to operate. The sieve plate 172 is bent in a semicircular shape and arranged around the crushing unit 174. After the raw materials are stirred and crushed by the crushing unit 174, they flow out through the sieve plate 172.

[0051] 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 to the discharge pipe 171 through a bearing, and one end of the rotating shaft 22 extends out of the discharge pipe 171 and is key-connected to the reduction motor 173, and the reduction motor 173 drives the rotating shaft 22 to rotate. Three rotor discs 23 are arranged on the rotating shaft 22 in the discharge pipe 171, and the three rotor discs 23 are arranged at intervals along the axial direction of the rotating shaft 22, and the rotating shaft 22 can drive the rotor discs 23 to rotate together.

[0052] Three stirring assemblies are evenly distributed outside the rotating shaft 22 in the discharge pipe 171, and the stirring assemblies are arranged axially along the rotating shaft 22. When the stirring assemblies are installed, each stirring assembly is arranged between the three rotor disks 23, and each stirring assembly includes two stirring plates 24. A crushing channel is formed between the two stirring plates 24, and there is an angle between the two stirring plates 24, so that one end of the crushing channel is wide and the other end is narrow. In short, each stirring plate 24 is bolted to the three rotor disks 23, and the three rotor disks 23 rotate together to drive the stirring plates 24 to rotate.

[0053] When the crusher 17 is in operation, the three stirring components are driven by the reduction motor 173 to rotate in the feed pipe 171, and the raw materials are stirred and crushed by the rotation of the stirring plate 24. At the same time, the stirring plate 24 can lift the raw materials to make them 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 downward out of the crusher 17 through the screen plate 172. In order to avoid dust during the operation of the crusher 17, a dustproof frame 175 is provided around the feed pipe 171. The dustproof frame 175 is a rectangular frame structure formed by four dustproof curtains. The cross section of the dustproof frame 175 is larger than the cross section of the feed pipe 171, and the dustproof frame 175 can limit the flow of dust.

[0054] A weighing belt conveyor 18 is arranged in the mounting bracket 14. The weighing belt conveyor 18 is arranged horizontally. After the raw materials are stirred and crushed by the crusher 17, they flow downward to the weighing belt conveyor 18, and the weighing belt conveyor 18 weighs and conveys the raw materials. 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. Both sides of the storage hopper 19 are connected and fixed to the frame of the weighing belt conveyor 18.

[0055] The storage hopper 19 is connected to the outlet of the crusher 17 upwards and to the weighing belt conveyor 18 downwards. Specifically, the storage hopper 19 has an inverted "eight"-shaped outward expansion structure above to connect with the crusher 17. The screen plate 172 is located within the range above the storage hopper 19, and the dustproof frame 175 extends downward to abut against the storage hopper 19, ensuring that the raw materials passing through the screen plate 172 are collected and gathered by the storage hopper 19 and directed to the weighing belt conveyor 18. The storage hopper 19 has a tube structure with a "sun"-shaped cross section below. Rubber material blocking strips 25 are provided at the bottom of both sides of the storage hopper 19. The rubber material blocking strips 25 are in contact with the conveying belt of the weighing belt conveyor 18, thereby limiting the raw materials in the storage hopper 19.

[0056] A material level sensor 26 is provided 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 provided in the middle of the storage hopper 19, which can be adjusted up and down. A long hole is vertically opened on the material level baffle 27, and bolts are used to pass through the long hole to connect with the storage hopper 19. After tightening the bolts, the material level baffle 27 can be fixed, and after loosening the bolts, 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, and the thickness of the raw material output by the weighing belt conveyor 18, that is, the thickness of the material layer, can be controlled by adjusting the gap. The space between the material level baffle 27 and the head end of the storage hopper 19 corresponds to the sieve plate 172, and 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 outlet length of the crusher 17.

[0057] A pneumatic gate 28 is provided 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 up and down. Specifically, the pneumatic gate 28 includes a cylinder and a gate controlled by the cylinder. The gate can move up and down along the storage hopper 19 under the control of the cylinder. The storage hopper 19 can be opened by moving upward to facilitate the weighing belt conveyor 18 to move the raw materials out of the storage hopper 19. The storage hopper 19 can be closed by moving downward to prevent the raw materials from moving out of the storage hopper 19.

[0058] The raw materials are conveyed by the weighing belt conveyor 18. After the conveyance, in order to avoid the remaining raw materials on the conveyor 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 surface of the conveyor belt can be brushed by the brush plate 29 to avoid the remaining raw materials. Moreover, a receiving chute 30 is also arranged on the mounting bracket 14 below the weighing belt conveyor 18. The receiving chute 30 is arranged obliquely downward towards the bucket elevator 4. The receiving chute 30 is communicated with the lifting bucket 11 of the bucket elevator 4. If a small amount of remaining raw materials fall, the raw materials will enter the lifting bucket 11 along the receiving chute 30 and can be reused again.

[0059] The weighing belt conveyor 18 is communicated with a weighing hopper 20, that is, the weighing belt conveyor 18 and the weighing hopper 20 are communicated up and down. The weighing hopper 20 is arranged on the mounting bracket 14 below one end of the weighing belt conveyor 18, that is, the weighing hopper 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 materials into the weighing hopper 20. A transparent dust-proof cover 49 is also arranged at the end of the weighing belt conveyor 18. The transparent dust-proof cover 49 covers the weighing hopper 20.

[0060] The raw materials can be weighed again 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 air 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 frame of the weighing belt conveyor 18 through the mounting plate 32. The mounting plate 32 is arranged horizontally. The weighing sensor 31 and the opening and closing air cylinder 33 are respectively arranged at both ends of the mounting plate 32. The weighing sensor 31 adopts the sensor of the MT1022 series. The opening and closing air cylinder 33 is arranged vertically. The opening and closing air cylinder 33 adopts the double-axis air cylinder of the cxsm15 series. The opening and closing air cylinder 33 can move up and down.

[0061] The hopper frame 34 is arranged on the weighing sensor 31. The cross section of the hopper frame 34 is in a "U" shape. The two sides above the hopper frame 34 are horizontally bent and then connected and fixed to the hopper body 35, so as to connect the hopper frame 34 and the hopper body 35 together. The hopper frame 34 and the hopper body 35 are arranged front and back along the conveying direction of the weighing belt conveyor 18. Opening and closing control plates 371 are rotatably arranged at the bent parts on both sides above the hopper frame 34. A control rod 37 is arranged between the two opening and closing control plates 371. The rising and falling of the control rod 37 can drive the two opening and closing control rods 37 to rotate in both positive and negative directions at the same time. The opening and closing air cylinder 33 jacks up the control rod 37 upwards, so as to control the two opening and closing control plates 371 to deflect upwards. A vertically arranged tension spring 38 is arranged between each opening and closing control plate 371 and the hopper frame 34. The tension spring 38 tightens the opening and closing control plate 371 and promotes the opening and closing control plate 371 to deflect downwards. When the opening and closing control plate 371 deflects upwards, the tension spring 38 is in a stretched state.

[0062] The bucket body 35 is open at both the top and bottom, and both sides of the lower end of the bucket body 35 are hinged with opening and closing plates 36. The opening and closing plates 36 on both sides are double-door structures, and the opening and closing of the lower end of the bucket body 35 are controlled by opening and closing the opening and closing plates 36. A front connecting rod 39 is hinged between the two opening and closing plates 36. There are two front connecting rods 39, which are located on both sides of the outside of the bucket body 35. The linkage control of the two opening and closing plates 36 is realized by the front connecting rod 39. In order to facilitate the control of the swing of the opening and closing plates 36, a rear connecting rod 40 is hinged between an opening and closing plate 36 close to the bucket frame 34 and the opening and closing control plate 371. Each opening and closing control plate 371 corresponds to a rear connecting rod 40. The opening and closing control of the opening and closing plates 36 is realized by the forward and reverse rotation of the opening and closing control plate 371.

[0063] It can be seen that, except for the mounting plate 32, the opening and closing cylinder 33 and the weighing sensor 31, the other parts of the weighing bucket 20 are arranged on the weighing sensor 31, that is, the weight of the other parts is all applied to the weighing sensor 31. When the raw materials are put into the weighing bucket 20, the opening and closing cylinder 33 is in a retracted state, and the opening and closing control plate 371 is tightened by the tension spring 38 to swing downward, and the opening and closing control plate 371 drives an opening and closing plate 36 to close through the rear connecting rod 40, and the opening and closing plates 36 are connected by the front connecting rod 39, and then the two opening and closing plates 36 are closed at the same time, thereby closing the lower end of the bucket body 35, and the raw materials can be put into the bucket body 35 at this time. As the raw materials enter the bucket body 35, the weighing sensor 31 monitors the weight of the raw materials in real time. When the set weight is reached, the weighing belt conveyor 18 stops running. At this time, the opening and closing cylinder 33 extends and pushes up the control rod 37, driving the opening and closing control plate 371 to swing upward. Under the action of the rear connecting rod 40 and the front connecting rod 39, the opening and closing plate 36 opens at the same time to release the raw materials in the bucket body 35.

[0064] The raw materials weighed by the weighing hopper 20 go down into the rotating material spreading device 2, and the rotating material spreading device 2 can evenly spread the raw materials into the mold. The rotating material spreading device 2 includes a support bent plate 201, a bearing seat 202, a drive motor 203, and a material spreading hopper 204 controlled by the drive 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 conveyor 18. Specifically, the support bent plate 201 is bent into a "𠃍" shape, and the horizontal end of the support bent plate 201 is connected and fixed to the support plate 3, and the vertical end of the support bent plate 201 is connected and fixed to the frame of the weighing belt conveyor 18.

[0065] The support bent plate 201 is provided with a bearing seat 202 and a driving motor 203. When the driving motor 203 is installed, a motor mounting seat 41 is provided on the support bent plate 201, and the driving motor 203 is provided on the motor mounting seat 41. The bearing seat 202 is arranged at intervals on one side of the motor mounting seat 41, and the bearing seat 202 is a slewing support structure. A material spreading hopper 204 is provided in the bearing seat 202. 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, and the driving motor 203 can control the rotation of the material spreading hopper 204.

[0066] The belt drive adopts a belt, that is, the output shaft of the driving motor 203 and the outside of the spreading hopper 204 are both arranged with pulleys, the two pulleys have different diameters, and are connected by a belt. In order to adjust the tightness of the belt, a guide wheel shaft 42 is adjustable on both sides of the mounting plate 32. Specifically, long strip holes are symmetrically opened on both sides of the mounting plate 32, and a guide wheel shaft 42 is passed through each long strip hole. The guide wheel shaft 42 is a stepped shaft, and the large diameter end of the guide wheel shaft 42 is located below the mounting plate 32, and 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 tightening the nut, the guide wheel shaft 42 is fixed, and after loosening the nut, 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 coordinated clamping of the two guide wheel shafts 42.

[0067] The material spreading hopper 204 is connected to the weighing hopper 20 upwards, and the raw materials in the weighing hopper 20 directly fall downwards into the material spreading hopper 204. Three material ports 43 are provided at the bottom edge of the material spreading hopper 204, and the material ports 43 are connected to the mold downwards. The raw materials can be evenly fed into the mold through the rotation of the material spreading hopper 204. Specifically, the material spreading hopper 204 includes a rotating inner ring segment 44, a feeding cone ring segment 45, and a material guiding cone ring segment 46, and the feeding cone ring segment 45, the rotating inner ring segment 44, and the material guiding cone ring segment 46 are arranged in sequence up and down.

[0068] The rotating inner ring segment 44 is a circular tube body, which is connected to the bearing seat 202 and driven by the driving motor 203. The upper end of the rotating inner ring segment 44 extends upward from the bearing seat 202 and is bolted to the feed cone ring segment 45. The feed cone ring segment 45 is a conical tube with a large upper part and a small lower part. The lower end of the rotating inner ring segment 44 extends downward from the bearing seat 202 and is bolted to the guide cone ring segment 46, so that the feed cone ring segment 45, the rotating inner ring segment 44 and the guide cone ring segment 46 operate together. The guide cone ring segment 46 is a circular ring body with a cross section in the shape of "[". The guide cone ring segment 46 is arranged horizontally, so that the bottom of the closed rotating inner ring segment 44 and the upper plane edge of the guide cone ring segment 46 are provided with a material port 43, and the middle part of the guide cone ring segment 46 protrudes upward into the rotating inner ring segment 44 in a conical shape.

[0069] In order to improve the smoothness of material spreading, a scraper rod 47 is provided outside the bearing seat 202. The middle part of the scraper rod 47 is bent and arranged along the inner wall of the material spreading hopper 204. There is a gap between the scraper rod 47 and the inner wall of the material spreading hopper 204, so that the scraper rod 47 is in a fixed state, but does not affect the rotation of the material spreading hopper 204. Specifically, the scraper rod 47 is a rod body bent in an "M" shape. Both ends of the scraper rod 47 are connected and fixed to the bearing seat 202. The middle part of the scraper rod 47 is arranged obliquely downward along the inner wall of the feed cone ring segment 45, and then arranged vertically downward along the guide cone ring segment 46, and finally arranged obliquely upward along the middle part of the guide cone ring segment 46.

[0070] The principle of the present invention is as follows: the mixed raw materials are poured into the lifting bucket 11, and the chain lifting unit 8 drives the lifting bucket 11 to move upward until the raw materials are poured into the feed hopper 15, and the lifting bucket 11 falls to the initial state. The lifting bucket 11 can move up and down independently without affecting the belt weighing crusher 5. The raw materials in the feed hopper 15 directly enter the crusher 17 downward, and the crushing unit 174 is driven to rotate by the operation of the reduction motor 173 to fully stir and crush the raw materials, and then the raw materials that meet the requirements are screened out through the screen plate 172 and enter the storage hopper 19 downward.

[0071] The raw materials fall onto the conveyor belt of the weighing belt conveyor 18 through the storage hopper 19 and accumulate in the storage hopper 19. During this process, the weighing belt conveyor 18 monitors the weight of the raw materials. When the set weight is reached, the crusher 17 stops running. The pneumatic gate 28 opens and the weighing belt conveyor 18 runs. The raw materials in the storage hopper 19 are driven by the conveyor belt to move out. During the process of the raw materials moving out, they will pass through the material level baffle 27 to ensure that the raw materials flow out of the storage hopper 19 with a certain thickness and flow to the weighing hopper 20. During the process of the weighing belt conveyor 18 feeding the weighing hopper 20, the weighing hopper 20 monitors the weight of the raw materials. When the set weight is reached, the weighing belt conveyor 18 stops. The weighing hopper 20 opens to discharge the materials into the spreading hopper 204. The driving motor 203 runs to drive the spreading hopper 204 to rotate, and the materials are evenly discharged into the mold from the three material ports 43 evenly distributed in the annular direction, thereby achieving the purpose of quantitative feeding and rotating uniform feeding.

[0072] In order to optimize the product structure and realize thorough material discharge from the spreading hopper 204, a brushing mechanism 48 is further provided on the support plate 3. The brushing mechanism 48 comprises a material plate 481, a brushing cylinder 482 installed on the material plate 481 and a round-headed brush 483 controlled by the brushing cylinder 482. The brushing cylinder 482 drives the round-headed brush 483 to move up and down. The round-headed brush 483 can move down to the upper plane position of the guide cone ring segment 46, and then brush the raw materials at the position of the material port 43 to avoid the raw materials remaining in the spreading hopper 204.

[0073] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. Quantitative and rotary feeding system, characterized in that: It comprises a quantitative feeding device (1) for feeding raw materials, a rotary spreading device (2) for discharging raw materials, and a support plate (3); The quantitative feeding device (1) comprises a bucket elevator (4) and a belt weighing crusher (5), wherein the belt weighing crusher (5) comprises a mounting bracket (14), a feed hopper (15), a dust cover (16), a crusher (17), a weighing belt conveyor (18), a storage hopper (19) and a weighing hopper (20); the feed hopper (15) is arranged above the mounting bracket (14), the feed hopper (15) is connected to the bucket elevator (4), the dust cover (16) is arranged above the feed hopper (15), and the lower part is connected to the crusher (17), and the outlet of the crusher (17) is a screen structure; The weighing belt conveyor (18) is arranged in the mounting bracket (14), the storage hopper (19) is arranged above the weighing belt conveyor (18), the storage hopper (19) is connected to the outlet of the crusher (17) upwards and connected to the weighing belt conveyor (18) downwards, the weighing belt conveyor (18) is connected to the weighing hopper (20), and the weighing hopper (20) is arranged on the mounting bracket (14) below one end of the weighing belt conveyor (18); The rotating material spreading device (2) is arranged between the quantitative feeding device (1) and the support plate (3), and the rotating material spreading device (2) comprises a supporting 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 supporting 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 conveyor (18); The bearing seat (202) and the driving motor (203) are arranged on the supporting bent plate (201), the material spreading hopper (204) is arranged inside the bearing seat (202), the material spreading hopper (204) is connected to the weighing hopper (20) upwards, a plurality of material openings (43) are arranged at the bottom edge of the material spreading hopper (204), the material openings (43) are connected to the mold downwards, a scraper rod (47) is arranged outside the bearing seat (202), the middle part of the scraper rod (47) is bent and arranged along the inner wall of the material spreading hopper (204), and there is a gap between the scraper rod (47) and the inner wall of the material spreading hopper (204).

2. The quantitative and rotary feeding system according to claim 1, characterized in that: The elevator comprises a lifting bracket (6), a guide rail (7), a chain lifting unit (8), a lifting trolley (9) controlled by the chain lifting unit (8), and a lifting bucket (11) with a guide wheel (10); the lifting bracket (6) is arranged vertically, the guide rail (7) is provided on one side of the lifting bracket (6), and the upper end of the guide rail (7) is inclined and bent toward the dust cover (16); The chain lifting unit (8) is rotatably provided on the lifting bracket (6), and the chain lifting unit (8) is arranged vertically. The lifting bracket (6) is provided with the lifting trolley (9) for sliding up and down. The lifting bucket (11) is rotatably provided on the lifting trolley (9), and the guide wheel (10) on the lifting bucket (11) moves along the guide track (7).

3. The quantitative and rotary feeding system according to claim 2, characterized in that: The feed hopper (15) is a conical structure with a larger upper portion and a smaller lower portion, and the dust cover (16) is a conical closed cover structure with a smaller upper portion and a larger lower portion. The large diameter end of the dust cover (16) is fixedly connected to the large diameter end of the feed hopper (15), the lower end opening of the dust cover (16) is connected to the feed hopper (15), the dust cover (16) is open on one side facing the bucket elevator (4), an upper dust curtain (21) is provided on the side of the dust cover (16) facing the bucket elevator (4), and the elevator bucket (11) passes through the upper dust curtain (21) to be connected to the feed hopper (15).

4. The quantitative and rotary feeding system according to claim 1, characterized in that: The crusher (17) is arranged below the feed hopper (15), and comprises a feed pipe (171), a screen plate (172), a reduction motor (173), a crushing unit (174) controlled by the reduction motor (173), and a dustproof frame (175); the feed pipe (171) is in a rectangular tube shape, the feed pipe (171) is upwardly connected to the outlet of the feed hopper (15), and the screen plate (172) is arranged below the feed pipe (171); The reduction motor (173) is disposed on one side of the discharge pipe (171), the crushing unit (174) is rotatably disposed in the discharge pipe (171), and the screen plate (172) is bent in a semicircular shape and disposed around the crushing unit (174).

5. The quantitative and rotary feeding system according to claim 4, characterized in that: The crushing unit (174) comprises a rotating shaft (22), a rotor disc (23) and a stirring assembly, wherein the rotating shaft (22) is rotatably connected to a discharge pipe (171) via a bearing, one end of the rotating shaft (22) extends out of the discharge pipe (171) and is key-connected to a reduction motor (173), and a plurality of rotor discs (23) are arranged on the rotating shaft (22) in the discharge pipe (171), and the plurality of rotor discs (23) are spaced apart along the axial direction of the rotating shaft (22); A plurality of stirring assemblies are evenly distributed outside the rotating shaft (22) in the discharge pipe (171), the stirring assemblies are arranged axially along the rotating shaft (22), each stirring assembly is arranged between a plurality of rotor disks (23), each stirring assembly comprises two stirring plates (24), a crushing channel is formed between the two stirring plates (24), and one end of the crushing channel is wide and the other end is narrow; The dustproof frame (175) is arranged on the peripheral side of the discharge pipe (171); the cross section of the dustproof frame (175) is larger than the cross section of the discharge pipe (171); the dustproof frame (175) is a rectangular frame structure formed by a plurality of dustproof curtains; the dustproof frame (175) extends downwards and abuts against the storage hopper (19).

6. The quantitative and rotary feeding system according to claim 1, characterized in that: The weighing belt conveyor (18) is arranged horizontally, and the storage hopper (19) is arranged along the conveying direction of the weighing belt conveyor (18). Both sides of the storage hopper (19) are connected and fixed to the frame of the weighing belt conveyor (18). The upper part of the storage hopper (19) is an inverted "eight"-shaped outward expansion structure for connecting with the crusher (17). The lower part of the storage hopper (19) is a tube structure with a "sun"-shaped cross section. Rubber blocking strips (25) are arranged at the bottom of both sides of the storage hopper (19), and the rubber blocking strips (25) are in contact with the conveying belt of the weighing belt conveyor (18).

7. The quantitative and rotary feeding system according to claim 6, characterized in that: A level sensor (26) is provided on the inner wall of the storage hopper (19). A level baffle (27) is provided in the middle of the storage hopper (19) and is adjustable up and down. The level baffle (27) has an adjustable gap with the conveyor belt of the weighing belt conveyor (18). Along the running direction of the weighing belt conveyor (18), a pneumatic gate (28) is provided at the end of the storage hopper (19). The pneumatic gate (28) is slidably arranged up and down on the storage hopper (19). A receiving chute (30) is further provided on the mounting bracket (14) below the weighing belt conveyor (18). The receiving chute (30) is arranged obliquely downward toward the bucket elevator (4). The receiving chute (30) is communicated with the bucket elevator (4).

8. The quantitative and rotary feeding system according to claim 1, characterized in that: The weighing hopper (20) is arranged at the end along the running direction of the weighing belt conveyor (18). The weighing belt conveyor (18) and the weighing hopper (20) are communicated up and down. A transparent dust-proof cover (49) is further provided at the end of the weighing belt conveyor (18). The transparent dust-proof cover (49) covers the weighing hopper (20). 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 frame of the weighing belt conveyor (18) through the mounting plate (32). The weighing sensor (31) and the opening and closing cylinder (33) are respectively arranged at both ends of the mounting plate (32). The opening and closing cylinder (33) is arranged vertically.

9. The quantitative and rotary feeding system according to claim 8, characterized in that: The hopper frame (34) is arranged on the weighing sensor (31). The cross-section of the hopper frame (34) is in a "U" shape. The two sides above the hopper frame (34) are horizontally bent and then connected and fixed to the hopper body (35). Opening and closing control plates (371) are rotatably arranged at the bent parts on both sides above the hopper frame (34). A control rod (37) is arranged between the two opening and closing control plates (371). The opening and closing cylinder (33)顶升 the control rod (37) upward. A vertically arranged tension spring (38) is arranged between each opening and closing control plate (371) and the hopper frame (34). The hopper body (35) is open at both the top and the bottom. The opening and closing plates (36) are respectively hinged to both sides at the lower end of the hopper 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. A rear connecting rod (40) is hinged between one opening and closing plate (36) close to the hopper frame (34) and the opening and closing control plate (371) to realize the opening and closing control of the opening and closing plate (36).

10. The quantitative and rotary feeding system according to claim 1, characterized in that: The support bent plate (201) is bent in a "ㄈ" shape. The horizontal end of the support bent plate (201) is connected and fixed to the support plate (3). The vertical end of the support bent plate (201) is connected and fixed to the frame of the weighing belt conveyor (18). A motor mounting seat (41) is provided on the support bent plate (201). The driving motor (203) is provided on the motor mounting seat (41). The bearing seats (202) are arranged at intervals on one side of the motor mounting seat (41). The material spreading hopper (204) comprises a rotating inner ring segment (44), a feeding cone ring segment (45) and a guiding cone ring segment (46); the rotating inner ring segment (44) is a torus; the rotating inner ring segment (44) is connected to the bearing seat (202); and the rotating inner ring segment (44) is driven by a driving motor (203); The upper end of the rotating inner ring segment (44) extends upward from the bearing seat (202) and is bolted to the feed cone ring segment (45). The feed cone ring segment (45) is a conical tube with a larger upper portion and a smaller lower portion. The lower end of the rotating inner ring segment (44) extends downward from the bearing seat (202) and is bolted to the guide cone ring segment (46). The guide cone ring segment (46) is a circular ring body with a cross-section in the shape of a "[". The guide cone ring segment (46) is arranged horizontally and closes the bottom of the rotating inner ring segment (44). The edge of the guide cone ring segment (46) is provided with the material opening (43). The middle portion of the guide cone ring segment (46) is conically convex upward into the rotating inner ring segment (44). The two ends of the scraper rod (47) are connected and fixed to the bearing seat (202), and the middle part of the scraper rod (47) is arranged obliquely downward along the inner wall of the feed cone ring segment (45), then arranged vertically downward along the guide cone ring segment (46), and finally arranged obliquely upward along the middle part of the guide cone ring segment (46).

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