A mixing mill with a quantitative feeding structure

Abstract

The present invention relates to the technical field of open mixing mills, and specifically discloses an open mixing mill with a quantitative feeding structure, including a U-shaped chassis and rollers for shearing and extruding rubber materials, a loading tray is arranged at the top of the horizontal section of the U-shaped chassis, and two vertical sections of the U-shaped chassis are arranged on opposite sides with support components for installing rollers through slideways, a driving component for driving two rollers is arranged in the U-shaped chassis, two groups of driving mechanisms for adjusting the roller spacing are arranged on one side of the U-shaped chassis, a feeding component for adding reagents between the rollers is arranged at the top of the U-shaped chassis, and two groups of scraping components for cleaning the plasticized rubber on the rollers are arranged at the top of the U-shaped chassis. The present invention has an intermittent weighing feeding structure, has a quantitative feeding function for reagents, reduces labor costs, and has an automatic adjustment function for the roller spacing.

Description

Technical Field

[0001] The invention relates to the technical field of open mixing mills, and in particular to an open mixing mill with a quantitative feeding structure. Background Art

[0002] In the production of rubber products, the open mill is often used to further plasticize and sheet the rubber compound from the internal mixer. In the production of plastic products, the open mill is used to mix and plasticize the uniformly mixed raw materials, and provide a relatively uniform molten material for the calender to calender and mold plastic products. The open mill applies strong shearing and extrusion to the rubber compound through two relatively rotating rollers, causing the rubber macromolecular chains to break and reorganize, thereby changing its molecular structure and making it a plasticized rubber in a plastic state. Specifically, the two rollers of the open mill rotate relative to each other at different speeds, and the rubber compound is brought into the roller gap between the rollers, subjected to friction shearing and extrusion, and repeatedly passed through the roller gap for plasticization.

[0003] During use, most of the existing open mixing mills require manual addition of multiple reagents between the rollers in batches. It is easy to add too much at one time, resulting in uneven refining and plasticization of the raw materials, high labor costs, and low production efficiency. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides an open mixing mill with a quantitative feeding structure, which can overcome the technical defects.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A mixing mill with a quantitative feeding structure, comprising a U-shaped chassis and rollers for shearing and squeezing rubber materials, a loading tray is arranged at the top of the horizontal section of the U-shaped chassis, two vertical sections of the U-shaped chassis facing each other are provided with supporting components for installing rollers through slideways, a driving component for driving two rollers is arranged inside the U-shaped chassis, two groups of driving mechanisms for adjusting the roller distance are arranged on one side of the U-shaped chassis, a feeding component for adding reagents between the rollers is arranged at the top of the U-shaped chassis, and two groups of scraping components for cleaning the plasticized rubber on the rollers are arranged at the top of the U-shaped chassis;

[0007] The feeding assembly comprises a square box for carrying reagents and a support frame, the top and bottom of the square box are both open, the support frame is used to support the square box, the top of the square box is provided with a folded edge folded outward, the bottom of the support frame is provided with two folded edges folded inward, the folded edge of the square box is located above the folded edge of the support frame, a pressure sensor is provided between the folded edge of the support frame and the folded edge of the square box, the inner wall of the square box is provided with a partition, the top of the partition is provided with two first feeding ports, the square box is respectively penetrated and slidably installed with L-shaped plates on both sides close to the two supporting assemblies, the top of the horizontal section of the L-shaped plate is fitted and slidably arranged with the bottom end of the partition, the horizontal section of the L-shaped plate is provided with a second feeding port, a spring is provided between the vertical section of the L-shaped plate and the outer wall of the square box, the support frame is installed on the top of the U-shaped chassis through a lifting assembly, and a limiting structure is provided at the top of the L-shaped plate;

[0008] The scraping assembly includes a support base, which is fixedly installed on the top of the U-shaped chassis. Two limit tubes are passed through and fixedly installed on the support base. The two limit tubes are respectively passed through and slidably installed with limit rods. A folding plate is fixedly installed between the two limit rods. The two folding plates are rotatably installed with scraping plates on the opposite sides through pin shafts. Two arc surfaces are arranged on the bottom end of the scraping plate, and the arc surfaces of the scraping plate match the roller.

[0009] Preferably, the support assembly includes a first support sleeve and a second support sleeve, the first support sleeve is slidably installed in the slide groove of the U-shaped chassis, and the second support sleeve is fixedly installed in the slide groove of the U-shaped chassis, and bearings are installed on the inner walls of the first support sleeve and the second support sleeve.

[0010] Preferably, the driving assembly includes a cylindrical gear reducer, a first motor and two driven gears, the cylindrical gear reducer is fixedly mounted on the bottom wall of the U-shaped chassis, the first motor is fixedly mounted on the bottom wall of the U-shaped chassis, the output shaft of the first motor is fixedly connected to the input shaft of the cylindrical gear reducer through a coupling, the two driven gears are respectively connected to adjacent roller keys, and the output shaft of the cylindrical gear reducer is fixedly connected to adjacent rollers through a coupling.

[0011] Preferably, the driving mechanism includes a sleeve and a reducing shaft, the sleeve passes through and is fixedly installed on one side of the U-shaped chassis, the reducing shaft is rotatably installed in the sleeve, the shaft body of the reducing shaft located on the outside of the U-shaped chassis is keyed to a driving tube, one end of the reducing shaft extending into the slide groove of the U-shaped chassis is fixedly installed with an integrally arranged screw, the screw is threadedly connected to a support tube, and the support tube is fixedly connected to the adjacent side wall of the first supporting sleeve.

[0012] Preferably, a first worm gear reduction box is provided on an outer wall of one side of the U-shaped chassis, the output worm gear of the first worm gear reduction box is keyed to a driving tube, a second worm gear reduction box is provided on an outer wall of one side of the first worm gear reduction box, the output shaft of the second worm gear reduction box is fixedly connected to the input shaft of the first worm gear reduction box through a coupling, a second motor is provided on an outer wall of one side of the U-shaped chassis, and the output shaft of the second motor is fixedly connected to the input shaft of the second worm gear reduction box through a coupling.

[0013] Preferably, a distance is left between the top end of the square box and the top wall of the support frame, and a plurality of groups of studs are arranged between the square box and the support frame, and the studs penetrate the folded edges of the square box and the support frame.

[0014] Preferably, the lifting assembly includes a first hydraulic cylinder, U-shaped frames are provided at the top of the two vertical sections of the U-shaped chassis, a cross plate is fixedly installed between the horizontal sections of the two U-shaped frames, the first hydraulic cylinder is fixedly installed at the top of the cross plate, and the bottom end of the piston rod of the first hydraulic cylinder is fixedly connected to the top of the support frame.

[0015] Preferably, the limiting structure includes an extrusion plate, which is fixedly mounted on the top end of the L-shaped plate, and the extrusion plate is penetrated and slidably connected to the square box, and the adjacent ends of the two extrusion plates are each provided with a downwardly disposed inclined surface, and the inclined surface of the extrusion plate is used to extrude the reagent, and the top end of the extrusion plate is provided with a convex strip, and the convex strip is located in the square box, and the convex strip cooperates with the extrusion plate to prevent the L-shaped plate from detaching from the square box.

[0016] Preferably, a second hydraulic cylinder is provided on the side away from the two support seats, the top end of the piston rod of the second hydraulic cylinder is fixedly connected to the folding plate, the top end of the folding plate is installed with a third hydraulic cylinder, the axial end of the third hydraulic cylinder is connected to a support rod through a pin shaft, and the support rod is fixedly connected to the top end of the scraper plate.

[0017] The beneficial effects of the present invention are:

[0018] 1. By setting the scraping assembly and the feeding assembly, the beneficial effect that can be obtained is that the first motor cooperates with the cylindrical gear reduction box to drive the adjacent rollers to rotate, and cooperates with the two driven gears to mesh and transmit, the two rollers that rotate relatively to each other exert strong shearing and extrusion on the rubber material, and at the same time, the two second hydraulic cylinders respectively drive the adjacent folding plates to slide back and forth, the limit rod slides in the limit tube, and the scraping plate and the folding plate slide synchronously to scrape the rubber material near the end between the two rollers to the middle. During the process of resetting the scraping plate to the end of the roller, the third hydraulic cylinder drives the scraping plate to flip upward, and the reagents to be dosed are introduced into the square box in batches at intervals, and the two pressure sensors weigh the reagents in the square box. The amount is weighed, the first hydraulic cylinder drives the support frame to descend, and the square box descends synchronously until the L-shaped plate matches the height of the two scraping plates, then the two second hydraulic cylinders respectively drive the adjacent folding plates to slide back and forth, the limit rod slides in the limit tube, the scraping plate and the folding plate slide synchronously to scrape the rubber near the end between the two rollers to the middle, while the scraping plate squeezes the L-shaped plate, the spring is compressed, the two L-shaped plates slide toward each other, the second discharge port coincides with the first discharge port, part of the reagent falls between the two rollers, the scraping plate reciprocates and squeezes the L-shaped plate until the reagent is added. It has an intermittent weighing and feeding structure, has the function of quantitative feeding of reagents, and reduces labor costs.

[0019] 2. By setting the limiting structure, the beneficial effect that can be obtained is that the limiting structure extrusion plate is fixedly installed on the top of the L-shaped plate, the extrusion plate and the square box are penetrated and slidably connected, and the adjacent ends of the two extrusion plates are provided with a downwardly arranged inclined surface, the inclined surface of the extrusion plate is used to extrude the reagent, and the top of the extrusion plate is provided with a convex strip, which is located in the square box, and the convex strip cooperates with the extrusion plate to prevent the L-shaped plate from leaving the square box;

[0020] During the sliding of the two L-shaped plates, the extrusion plate slides synchronously with the L-shaped plates, thereby improving the stability of the sliding process of the L-shaped plates. During the approach of the two extrusion plates to each other, the reagents are squeezed toward the first discharge port and the second discharge port through the inclined surfaces, and the two convex strips have the function of preventing the L-shaped plates from falling off.

[0021] 3. By setting the driving mechanism, the beneficial effect that can be obtained is that the sleeve passes through and is fixedly installed on one side of the U-shaped chassis, the reducing shaft is rotatably installed in the sleeve, the reducing shaft is located on the outer side of the U-shaped chassis and is keyed to the driving tube, one end of the reducing shaft extending into the slide groove of the U-shaped chassis is fixedly installed with an integrally arranged screw, the screw is threadedly connected to a support cylinder, the support cylinder is fixedly connected to the adjacent side wall of the first supporting sleeve seat, a first worm gear reduction box is arranged on the outer wall of one side of the U-shaped chassis, the output worm gear of the first worm gear reduction box is keyed to the driving tube, a second worm gear reduction box is arranged on the outer wall of one side of the first worm gear reduction box, the output shaft of the second worm gear reduction box is fixedly connected to the input shaft of the first worm gear reduction box through a coupling, a second motor is arranged on the outer wall of one side of the U-shaped chassis, and the output shaft of the second motor is fixedly connected to the input shaft of the second worm gear reduction box through a coupling;

[0022] The second motor drives the second worm gear reduction box, drives the first worm gear reduction box, drives the drive tube, the reducer shaft and the screw to rotate synchronously, drives the support tube and the first support sleeve to slide synchronously, adjusts the distance between the two rollers, and has the function of automatically adjusting the distance between the rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is the installation structure diagram of the support assembly in the present invention;

[0026] Figure 3 It is the installation structure diagram of the driving assembly in the present invention;

[0027] Figure 4 It is the installation structure diagram of the driving mechanism in the present invention;

[0028] Figure 5 It is a structural diagram of the installation of the sleeve and the reducer shaft in the present invention;

[0029] Figure 6 is a cross-sectional view of the support tube in the present invention;

[0030] Figure 7 is a cross-sectional view of the square box in the present invention;

[0031] Figure 8 This is a structural diagram of the installation of the support frame in the present invention;

[0032] Fig. 9 It is the installation structure diagram of the limiting structure in the present invention;

[0033] Fig.10It is the installation structure diagram of the scraping assembly in the present invention.

[0034] Description of reference numerals:

[0035] In the figure: 1, U-shaped chassis; 11, control cabinet; 2, loading tray; 31, first support sleeve; 32, second support sleeve; 33, bearing; 41, cylindrical gear reduction box; 42, first motor; 43, driven gear; 51, sleeve; 52, reducer shaft; 53, drive tube; 54, screw; 55, support cylinder; 56, first worm gear reduction box; 57, second worm gear reduction box; 58, second motor; 61, square box; 62, support Frame; 63, stud; 64, pressure sensor; 65, partition; 66, first feed opening; 67, L-shaped plate; 68, second feed opening; 69, spring; 71, U-shaped frame; 72, cross plate; 73, first hydraulic cylinder; 81, extrusion plate; 82, convex strip; 91, support seat; 92, limit tube; 93, limit rod; 94, folding plate; 95, scraper plate; 96, second hydraulic cylinder; 97, third hydraulic cylinder; 98, support rod. DETAILED DESCRIPTION

[0036] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside", "outside", etc. is based on the orientation or position described in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0038] Reference Figure 1-Figure 10, is an open mixing mill with a quantitative feeding structure disclosed in the present invention, comprising a U-shaped chassis 1 and a roller for shearing and squeezing rubber materials, a control cabinet 11 is arranged at the top of the U-shaped chassis 1, a loading tray 2 is arranged at the top of the horizontal section of the U-shaped chassis 1, and two vertical sections of the U-shaped chassis 1 are arranged on opposite sides with a supporting assembly for installing the roller through a slide groove, and the supporting assembly comprises a first supporting sleeve 31 and a second supporting sleeve 32, the first supporting sleeve 31 is slidably installed in the slide groove of the U-shaped chassis 1, and the second supporting sleeve 32 is fixedly installed in the slide groove of the U-shaped chassis 1, and the inner walls of the first supporting sleeve 31 and the second supporting sleeve 32 are both installed with bearings 33, and the U-shaped chassis 1 is provided with a roller for driving the two The driving assembly of the roller includes a cylindrical gear reduction box 41, a first motor 42 and two driven gears 43. The cylindrical gear reduction box 41 is fixedly installed on the bottom wall of the U-shaped chassis 1, and the first motor 42 is fixedly installed on the bottom wall of the U-shaped chassis 1. The output shaft of the first motor 42 is fixedly connected to the input shaft of the cylindrical gear reduction box 41 through a coupling. The two driven gears 43 are respectively connected to adjacent roller keys. The output shaft of the cylindrical gear reduction box 41 is fixedly connected to adjacent rollers through a coupling. The first motor 42 cooperates with the cylindrical gear reduction box 41 to drive the adjacent rollers to rotate, and cooperates with the two driven gears 43 to mesh and transmit. The two rollers that rotate relatively to each other exert strong shearing and extrusion on the rubber material.

[0039] One side of the U-shaped chassis 1 is provided with two sets of driving mechanisms for adjusting the roller pitch, the driving mechanisms include a sleeve 51 and a reducing shaft 52, the sleeve 51 passes through and is fixedly installed on one side of the U-shaped chassis 1, the reducing shaft 52 is rotatably installed in the sleeve 51, the reducing shaft 52 is located on the outside of the U-shaped chassis 1 and is keyed to a driving tube 53, one end of the reducing shaft 52 extending into the slide groove of the U-shaped chassis 1 is fixedly installed with an integrally arranged screw 54, the screw 54 is threadedly connected with a support tube 55, the support tube 55 is fixedly connected to the adjacent side wall of the first supporting sleeve 31, and a first worm gear reduction box 56 is provided on the outer wall of one side of the U-shaped chassis 1, and the output worm of the first worm gear reduction box 56 The wheel is key-connected with the driving tube 53, a second worm gear reduction box 57 is provided on one side outer wall of the first worm gear reduction box 56, the output shaft of the second worm gear reduction box 57 is fixedly connected with the input shaft of the first worm gear reduction box 56 through a coupling, a second motor 58 is provided on one side outer wall of the U-shaped chassis 1, the output shaft of the second motor 58 is fixedly connected with the input shaft of the second worm gear reduction box 57 through a coupling, the second motor 58 drives the second worm gear reduction box 57 to transmit, drives the first worm gear reduction box 56 to transmit, drives the driving tube 53, the reducing shaft 52 and the screw 54 to rotate synchronously, drives the supporting cylinder 55 and the first bearing sleeve 31 to slide synchronously, and adjusts the distance between the two rollers.

[0040] The top of the U-shaped chassis 1 is provided with a feeding assembly for adding reagents between the rollers, and the feeding assembly includes a square box 61 for carrying the reagent and a support frame 62. The top and bottom ends of the square box 61 are both open, and the support frame 62 is used to support the square box 61. The top of the square box 61 is provided with an outwardly folded edge, and the bottom of the support frame 62 is provided with two inwardly folded edges. The folded edge of the square box 61 is located above the folded edge of the support frame 62. A spacing is left between the top of the square box 61 and the top wall of the support frame 62. A plurality of studs 63 are arranged between the square box 61 and the support frame 62, and the studs 63 penetrate the folded edges of the square box 61 and the support frame 62. A pressure sensor 64 is arranged between the folded edges of the support frame 62 and the square box 61. A partition 65 is arranged on the inner wall of the square box 61, and two first feed ports 66 are arranged on the top of the partition 65. L-shaped plates 67 are respectively penetrated and slidably installed on both sides of the square box 61 near the two supporting components, and the top of the horizontal section of the L-shaped plate 67 is arranged to fit and slide with the bottom end of the partition 65. The horizontal section of the mold plate 67 is provided with a second unloading port 68, a spring 69 is provided between the vertical section of the L-shaped plate 67 and the outer wall of the square box 61, the support frame 62 is installed on the top of the U-shaped chassis 1 through a lifting assembly, and the lifting assembly includes a first hydraulic cylinder 73, and the tops of the two vertical sections of the U-shaped chassis 1 are both provided with U-shaped frames 71, and a horizontal plate 72 is fixedly installed between the horizontal sections of the two U-shaped frames 71, and the first hydraulic cylinder 73 is fixedly installed on the top of the horizontal plate 72, and the bottom end of the piston rod of the first hydraulic cylinder 73 is connected to the support frame 62. The top of the L-shaped plate 67 is fixedly connected, and a limiting structure is provided at the top of the L-shaped plate 67. The limiting structure includes an extrusion plate 81, which is fixedly installed on the top of the L-shaped plate 67. The extrusion plate 81 is penetrated and slidably connected to the square box 61. The adjacent ends of the two extrusion plates 81 are each provided with a downwardly disposed inclined surface. The inclined surface of the extrusion plate 81 is used to extrude the reagent. The top of the extrusion plate 81 is provided with a convex strip 82, which is located in the square box 61. The convex strip 82 cooperates with the extrusion plate 81 to prevent the L-shaped plate 67 from detaching from the square box 61.

[0041] The top of the U-shaped chassis 1 is provided with two groups of scraping components for cleaning the plasticized rubber on the roller, and the scraping components include a support seat 91, and the support seat 91 is fixedly installed on the top of the U-shaped chassis 1. The support seat 91 passes through and is fixedly installed with two limit tubes 92. The two limit tubes 92 respectively pass through and are slidably installed with limit rods 93. A folding plate 94 is fixedly installed between the two limit rods 93. The two folding plates 94 are both rotatably installed with a scraping plate 95 on one side facing each other through a pin shaft. The bottom end of the scraping plate 95 is provided with two arc surfaces, and the arc surface of the scraping plate 95 matches the roller. The two support seats 91 are both provided with a first arc surface on the side away from each other. Two hydraulic cylinders 96, the top end of the piston rod of the second hydraulic cylinder 96 is fixedly connected to the folding plate 94, and the top end of the folding plate 94 is installed with a third hydraulic cylinder 97. The shaft end of the third hydraulic cylinder 97 is connected with a support rod 98 through a pin shaft, and the support rod 98 is fixedly connected to the top end of the scraper plate 95. The two second hydraulic cylinders 96 drive the adjacent folding plates 94 to slide back and forth respectively, and the limit rod 93 slides in the limit tube 92. The scraper plate 95 and the folding plate 94 slide synchronously to scrape the rubber near the ends between the two rollers to the middle. During the process of resetting the scraper plate 95 to the end of the roller, the third hydraulic cylinder 97 drives the scraper plate 95 to flip upward.

[0042] The working principle and use process of the present invention are as follows: the first motor 42 cooperates with the cylindrical gear reduction box 41 to drive the adjacent rollers to rotate, and cooperates with the two driven gears 43 to mesh and transmit, and the two rollers that rotate relatively to each other exert strong shearing and extrusion on the rubber material. At the same time, the two second hydraulic cylinders 96 respectively drive the adjacent folding plates 94 to slide back and forth, the limit rod 93 slides in the limit tube 92, and the scraping plate 95 and the folding plate 94 slide synchronously to scrape the rubber material near the ends between the two rollers to the middle. During the process of resetting the scraping plate 95 to the end of the roller, the third hydraulic cylinder 97 drives the scraping plate 95 to flip upward, and the reagents to be added are introduced into the square box 61 in batches at intervals, and the two pressure sensors 64 are The weight of the reagent in the square box 61 is weighed, the first hydraulic cylinder 73 drives the support frame 62 to descend, and the square box 61 descends synchronously until the L-shaped plate 67 matches the height of the two scraping plates 95, and then the two second hydraulic cylinders 96 respectively drive the adjacent folding plates 94 to slide back and forth, the limiting rod 93 slides in the limiting tube 92, and the scraping plate 95 and the folding plate 94 slide synchronously to scrape the rubber near the end between the two rollers to the middle. At the same time, the scraping plate 95 squeezes the L-shaped plate 67, the spring 69 is compressed, and the two L-shaped plates 67 slide toward each other. The second discharge port 68 overlaps with the first discharge port 66, and part of the reagent falls between the two rollers. The scraping plate 95 reciprocates and squeezes the L-shaped plate 67 until the reagent is delivered.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A mixing mill with a quantitative feeding structure, characterized in that: It comprises a U-shaped chassis (1) and rollers for shearing and squeezing rubber materials, wherein a loading tray (2) is arranged at the top of the horizontal section of the U-shaped chassis (1), and supporting assemblies for mounting rollers are arranged on the opposite sides of the two vertical sections of the U-shaped chassis (1) through slide grooves, and a driving assembly for driving two rollers is arranged inside the U-shaped chassis (1), and two groups of driving mechanisms for adjusting the roller distance are arranged on one side of the U-shaped chassis (1), and a feeding assembly for adding reagents between the rollers is arranged at the top of the U-shaped chassis (1), and two groups of scraping assemblies for cleaning the plasticized rubber on the rollers are arranged at the top of the U-shaped chassis (1); The feeding assembly comprises a square box (61) for carrying reagents and a support frame (62), the top and bottom of the square box (61) are both open, the support frame (62) is used to support the square box (61), the top of the square box (61) is provided with an outwardly folded edge, the bottom of the support frame (62) is provided with two inwardly folded edges, the folded edge of the square box (61) is located above the folded edge of the support frame (62), a pressure sensor (64) is provided between the folded edge of the support frame (62) and the folded edge of the square box (61), the inner wall of the square box (61) is provided with a partition (65), and the Two first discharge openings (66) are arranged at the top of the partition (65); L-shaped plates (67) are respectively penetrated and slidably installed on both sides of the square box (61) close to the two supporting components; the top of the horizontal section of the L-shaped plate (67) is arranged to slide in contact with the bottom of the partition (65); a second discharge opening (68) is arranged at the horizontal section of the L-shaped plate (67); a spring (69) is arranged between the vertical section of the L-shaped plate (67) and the outer wall of the square box (61); the support frame (62) is installed on the top of the U-shaped chassis (1) through a lifting component; and a limiting structure is arranged at the top of the L-shaped plate (67); The scraping assembly comprises a support seat (91), the support seat (91) is fixedly mounted on the top of the U-shaped chassis (1), the support seat (91) penetrates and is fixedly mounted with two limit tubes (92), the two limit tubes (92) respectively penetrate and are slidably mounted with limit rods (93), a folding plate (94) is fixedly mounted between the two limit rods (93), and a scraping plate (95) is rotatably mounted on the opposite sides of the two folding plates (94) via a pin shaft, and the bottom end of the scraping plate (95) is provided with two arc surfaces, and the arc surfaces of the scraping plate (95) match the roller.

2. The mixing mill with a quantitative feeding structure according to claim 1, characterized in that: The support assembly comprises a first support sleeve (31) and a second support sleeve (32); the first support sleeve (31) is slidably mounted in a slide groove of the U-shaped chassis (1); the second support sleeve (32) is fixedly mounted in the slide groove of the U-shaped chassis (1); and bearings (33) are mounted on inner walls of the first support sleeve (31) and the second support sleeve (32).

3. The mixing mill with a quantitative feeding structure according to claim 1, characterized in that: The driving assembly comprises a cylindrical gear reduction box (41), a first motor (42) and two driven gears (43); the cylindrical gear reduction box (41) is fixedly mounted on the bottom wall of the U-shaped chassis (1); the first motor (42) is fixedly mounted on the bottom wall of the U-shaped chassis (1); the output shaft of the first motor (42) is fixedly connected to the input shaft of the cylindrical gear reduction box (41) via a coupling; the two driven gears (43) are respectively keyed to adjacent rollers; and the output shaft of the cylindrical gear reduction box (41) is fixedly connected to adjacent rollers via a coupling.

4. The mixing mill with a quantitative feeding structure according to claim 2, characterized in that: The driving mechanism comprises a sleeve (51) and a reducing shaft (52), wherein the sleeve (51) penetrates and is fixedly mounted on one side of the U-shaped chassis (1), and the reducing shaft (52) is rotatably mounted in the sleeve (51), and a shaft body of the reducing shaft (52) located outside the U-shaped chassis (1) is key-connected with a driving tube (53), and an end of the reducing shaft (52) extending into a slide groove of the U-shaped chassis (1) is fixedly mounted with an integrally arranged screw rod (54), and the screw rod (54) is threadedly connected with a support tube (55), and the support tube (55) is fixedly connected to a side wall of an adjacent first support sleeve (31).

5. The mixing mill with a quantitative feeding structure according to claim 4, characterized in that: A first worm gear reduction box (56) is disposed on an outer wall of one side of the U-shaped case (1), an output worm wheel of the first worm gear reduction box (56) being key-connected to a drive tube (53), a second worm gear reduction box (57) is disposed on an outer wall of one side of the first worm gear reduction box (56), an output shaft of the second worm gear reduction box (57) being fixedly connected to an input shaft of the first worm gear reduction box (56) via a coupling, and a second motor (58) is disposed on an outer wall of one side of the U-shaped case (1), an output shaft of the second motor (58) being fixedly connected to an input shaft of the second worm gear reduction box (57) via a coupling.

6. The mixing mill with a quantitative feeding structure according to claim 1, characterized in that: A gap is left between the top end of the square box (61) and the top wall of the support frame (62), and a plurality of groups of studs (63) are arranged between the square box (61) and the support frame (62), and the studs (63) penetrate the folded edges of the square box (61) and the support frame (62).

7. The mixing mill with a quantitative feeding structure according to claim 1, characterized in that: The lifting assembly comprises a first hydraulic cylinder (73); the top ends of the two vertical sections of the U-shaped chassis (1) are each provided with a U-shaped frame (71); a transverse plate (72) is fixedly installed between the horizontal sections of the two U-shaped frames (71); the first hydraulic cylinder (73) is fixedly installed on the top end of the transverse plate (72); and the bottom end of the piston rod of the first hydraulic cylinder (73) is fixedly connected to the top end of the support frame (62).

8. The mixing mill with a quantitative feeding structure according to claim 1, characterized in that: The limiting structure comprises an extrusion plate (81), the extrusion plate (81) being fixedly mounted on the top end of the L-shaped plate (67), the extrusion plate (81) being penetrated and slidably connected to the square box (61), the adjacent ends of the two extrusion plates (81) being provided with a downwardly disposed inclined surface, the inclined surface of the extrusion plate (81) being used for extruding the reagent, the top end of the extrusion plate (81) being provided with a convex strip (82), the convex strip (82) being located in the square box (61), and the convex strip (82) cooperating with the extrusion plate (81) being used for preventing the L-shaped plate (67) from being separated from the square box (61).

9. The mixing mill with a quantitative feeding structure according to claim 1, characterized in that: A second hydraulic cylinder (96) is provided on one side of the two support seats (91) that are away from each other. The top end of the piston rod of the second hydraulic cylinder (96) is fixedly connected to the folding plate (94). A third hydraulic cylinder (97) is installed on the top end of the folding plate (94). The shaft end of the third hydraulic cylinder (97) is connected to a support rod (98) via a pin shaft. The support rod (98) is fixedly connected to the top end of the scraper plate (95).

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