CN120961282A

CN120961282A - Multi-tooth roller classifying and crushing device

Info

Publication number: CN120961282A
Application number: CN202511516348.0A
Authority: CN
Inventors: 张园; 王甲; 肖立春; 魏宏武; 刘满平
Original assignee: Tangshan Tianhe Environmental Protection Technology Co ltd
Current assignee: Tangshan Tianhe Environmental Protection Technology Co ltd
Priority date: 2025-10-23
Filing date: 2025-10-23
Publication date: 2025-11-18
Anticipated expiration: 2045-10-23
Also published as: CN120961282B

Abstract

This invention relates to the field of crushing equipment technology, and provides a multi-toothed roller grading crushing device, including a crushing box, a hopper, and a drying mechanism. The drying mechanism includes swing plates and an air supply pipe. Multiple swing plates are divided into two groups and located on the inner walls of both sides of the hopper. The swing plates can swing away from the inner walls of the hopper to form a zigzag feeding channel within the hopper. The air supply pipe connects to an external hot air supply unit and supplies hot air above the swing plates. By setting swing plates that can swing to form a zigzag feeding channel within the hopper, and combining this with the hot air supplied by the air supply pipe, the drying of moist, sticky materials is achieved, thereby reducing the material's moisture content and viscosity, and reducing the possibility of material adhering and accumulating on the toothed rollers from the source. This technical solution solves the technical problem in related technologies of lacking means to treat moist, sticky materials themselves to reduce the possibility of subsequent adhesion and accumulation on the toothed rollers.

Description

Multi-tooth roller classifying and crushing device

Technical Field

The embodiment of the invention relates to the technical field of crushing devices, in particular to a multi-tooth roller grading crushing device.

Background

Coal is one of the global important energy resources and occupies an indispensable position in various fields such as industrial production, power supply, resident life and the like. With the continuous development of the coal industry, the performance requirements on material crushing equipment are also increasingly improved.

In the coal industry, the toothed roller crusher is widely applied to crushing operations of various materials such as mine raw coal, clean coal, gangue, bauxite and the like. The tooth roller crusher is used for crushing large materials into small materials with required granularity through the actions of extruding, shearing, splitting and the like of crushing teeth on the tooth roller. When facing the moist viscous material of part, because the adhesion of moist viscous material, in crushing process, the material is easy to adhere, pile up between adjacent crushing tooth on the fluted roller, forms the material caking gradually, influences the effective breakage of crushing tooth to follow-up material, still probably leads to the fluted roller to rotate unsmoothly.

Aiming at the problem, a plurality of online cleaning devices exist in the industry at present, and usually, components such as scraping plates, brushes and the like are adopted to clean materials adhered on the toothed roller in a manner of directly contacting and scraping the surface of the toothed roller so as to maintain the normal operation of equipment. While these cleaning devices have somewhat alleviated the problem of material sticking and accumulation, they have all cleaned material that has stuck to the toothed roller, and lack an effective means of treating the moist, viscous material itself to reduce the likelihood of subsequent sticking and accumulation on the toothed roller.

Therefore, the development of the multi-tooth roller classifying and crushing device capable of reducing the possibility of adhesion and accumulation of materials on the tooth rollers starts from the characteristics of wet and viscous materials, and the multi-tooth roller classifying and crushing device becomes an important subject to be solved in the coal and related industries.

Disclosure of Invention

In order to overcome the defects, the embodiment of the invention provides a multi-tooth roller classifying and crushing device, which solves the technical problem that the prior art lacks means for treating moist viscous materials to reduce the possibility of subsequent adhesion and accumulation on tooth rollers.

According to one aspect, at least one embodiment of the present invention provides a multi-tooth roller classifying crushing device, including a crushing box body, a hopper and a drying mechanism, wherein the crushing box body is provided with a feed inlet and a discharge outlet, and the hopper is arranged at the top of the crushing box body and is communicated with the feed inlet;

the drying mechanism comprises a plurality of swinging plates and an air supply pipe, wherein the swinging plates are arranged on the inner wall of the hopper in a swinging way, the swinging plates are divided into two groups and are respectively positioned on the inner walls of the two sides of the hopper, and the swinging plates can vertically swing and are far away from the inner wall of the hopper so as to form a folded linear feeding channel in the hopper;

The swing plate is provided with a plurality of air outlet holes in a penetrating mode, the air supply pipe is arranged on the bottom surface of the swing plate and communicated with the air outlet holes, and the air supply pipe is used for communicating an external hot air supply unit and supplying hot air to the upper portion of the swing plate through the air outlet holes.

For example, in a multi-tooth roller classifying and crushing device provided in at least one embodiment of the present invention, the device further includes:

Limiting columns are arranged on two sides of the swing plate, a plurality of arc-shaped sliding grooves are formed in two side walls of the hopper, and the limiting columns penetrate through the arc-shaped sliding grooves one by one and are in sliding fit with the arc-shaped sliding grooves;

Two symmetrically distributed driving plates are arranged on the outer side of the hopper in a sliding mode, each driving plate corresponds to one group of swinging plates, driving sliding grooves are formed in the driving plates in a penetrating mode, limiting columns of the same group of swinging plates are in sliding fit with the driving sliding grooves of the driving plates, and the swinging plates can vertically swing under the sliding fit effect of the limiting columns and the driving sliding grooves when the driving plates slide;

The hopper outside rotation is provided with two-way screw rod, two drive plate respectively threaded connection in two ends of two-way screw rod, two can be driven to two by two-way screw rod the drive plate slides in opposite directions or in opposite directions.

The swing plate is provided with a buffer plate, a plurality of buffer springs are connected between the swing plate and the buffer plate, and the buffer plate is provided with a plurality of ventilation holes.

the crushing box body is internally provided with a pair of coarse crushing rollers and a pair of fine crushing rollers in a rotating mode, and the coarse crushing rollers and the fine crushing rollers are arranged at intervals up and down and are used for sequentially carrying out coarse crushing and fine crushing on materials.

a vibrating screen plate is arranged between the coarse crushing roller and the fine crushing roller, the heights of the screen plate are gradually reduced from the middle part to the two sides, and the screen plate can screen the materials output by the coarse crushing roller so that the materials with the grain size smaller than the screen mesh size of the screen plate fall between the two fine crushing rollers for fine crushing, and the materials with the grain size larger than the screen mesh size of the screen plate are guided to gaps between the fine crushing roller and the crushing box body;

The discharging hole comprises a fine material discharging hole and a coarse material discharging hole, the fine material discharging hole is located below a gap between the two fine crushing rollers and used for receiving fine materials after fine crushing of the two fine crushing rollers, and the coarse material discharging hole is located below a gap between the fine crushing rollers and the crushing box and used for receiving coarse materials screened out by the screen plate.

The sieve plate is characterized in that guide plates inclined to adjacent sides are symmetrically arranged below the sieve plate, and the guide plates are used for guiding materials sieved by the sieve plate to a position between two fine crushing rollers for fine crushing.

the middle part of the sieve plate is provided with a distributing plate, and the distributing plate is used for dispersing coarse materials coarsely crushed by the coarse crushing rollers to two sides of the sieve plate.

The crushing teeth of the two coarse crushing rollers are arranged in an axial staggered manner, the distributing plate is arranged in the middle of the sieve plate in a vertical sliding manner, a plurality of flexible scraping plates are arranged at the top end of the distributing plate, and the flexible scraping plates are comb-shaped and correspond to the crushing teeth of the two coarse crushing rollers one by one;

the flexible scraping plates can move upwards under the drive of the distributing plate and are alternately in flexible abutting connection with the crushing teeth on the two coarse crushing rollers so as to clean tooth gaps of the crushing teeth.

the two side walls of the crushing box body are respectively provided with a lifting chute, the end parts of the material dividing plates are slidably arranged in the lifting chutes, and the end parts of the material dividing plates are connected with linear driving parts for driving the material dividing plates to lift.

The crushing box is characterized in that a plurality of box doors are hinged to the side wall of the crushing box body, the box doors horizontally correspond to the coarse crushing roller or the fine crushing roller, and a telescopic piece is arranged between the crushing box body and the box doors and used for driving the box doors to open and close.

The embodiment of the invention has the beneficial effects that:

According to the invention, when the device detects that the wet viscous material needs to be processed, the swinging plate swings under the action of external force and gradually gets away from the inner wall of the hopper, so that a folded feeding channel is formed. The fold line-shaped feeding channel increases the conveying length of the materials in the hopper on the premise of not increasing the occupied space of the hopper, and provides more time for the contact and drying of the materials and hot air.

The hot air generated by the external hot air supply unit is conveyed to the bottom surface of the swing plate through the air supply pipe, then is sprayed out from the air outlet hole on the swing plate, and flows upwards to the material area above the swing plate. The hot air is in contact with the materials to take away the moisture on the surfaces of the materials, so that the materials are dried in advance. Meanwhile, the material can fall back and forth among the plurality of swinging plates to continuously turn over, so that hot air can more uniformly contact all parts of the material, and the drying effect is further improved.

The swinging plate capable of swinging to form the folded feeding channel is arranged in the hopper, and the design of conveying hot air by combining the air supply pipe is combined, so that the wet viscous material is dried. The fold line-shaped feeding channel increases the contact time of the material and hot air, and the hot air can be more comprehensively contacted with the material by the material tumbling, so that the water content of the material is reduced, the viscosity of the material is reduced, and the possibility of adhesion and accumulation of the material on the toothed roller is reduced from the source. After the wet viscous material subjected to pre-drying treatment enters the crushing box body, the adhesion accumulation on the tooth roller can be reduced, and the crushing efficiency and the crushing quality are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following description will simply refer to the drawings that are required to be used in the description of the embodiments of the present invention. It is apparent that the drawings in the following description are only some of the exemplary embodiments of the present invention. Other figures may be made by those of ordinary skill in the art based on the teachings of the exemplary embodiments of the present invention and these figures without undue effort.

FIG. 1 is a schematic view of a multi-toothed roller classifying crushing device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the hopper in the embodiment of FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 2;

FIG. 4 is a schematic view of the internal structure of the hopper in the embodiment of FIG. 1;

FIG. 5 is a schematic view of the swing plate of the embodiment of FIG. 1;

FIG. 6 is an enlarged view of FIG. 5 at C;

FIG. 7 is a schematic view showing the internal structure of the crushing box in the embodiment of FIG. 1;

FIG. 8 is a schematic view of the structure of the screen plate in the embodiment of FIG. 1;

FIG. 9 is an enlarged view of FIG. 8 at D;

FIG. 10 is a schematic view of the structure of the material separating plate in the embodiment of FIG. 1;

FIG. 11 is a schematic view of crushing teeth of the coarse crushing roller of the embodiment of FIG. 1;

fig. 12 is an enlarged view at a in fig. 1.

In the figure, 1, a crushing box body, 2, a hopper, 3, a drying mechanism, 101, a feed inlet, 102, a discharge outlet, 4, a swinging plate, 5, an air supply pipe, 401, an air outlet, 402, a limit column, 201, an arc chute, 6, a driving plate, 601, a driving chute, 7, a bidirectional screw, 8, a buffer plate, 9, a buffer spring, 801, an air vent, 10, a coarse crushing roller, 11, a fine crushing roller, 12, a sieve plate, 1021, a fine material discharge outlet, 1022, a coarse material discharge outlet, 13, a guide plate, 14, a distributing plate, 1001, crushing teeth, 15, a flexible scraper, 103, a lifting chute, 104 and a box door.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof.

For simplicity of the drawing, only the parts relevant to the invention are schematically shown in each drawing, and they do not represent the actual structure thereof as a product. In addition, in order to simplify the drawings and facilitate understanding, components having the same structure or function in some drawings are only schematically illustrated in one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one", and "a number" includes "two" and "two or more".

In this context, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or communicate between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.

In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 6, a multi-tooth roller classifying crushing device according to an embodiment of the present invention includes a crushing box 1, a hopper 2, and a drying mechanism 3. Wherein broken box 1 has feed inlet 101 and bin outlet 102, and feed inlet 101 is located the box top, and bin outlet 102 sets up in the bottom of the box for discharge after the breakage material. The hopper 2 is arranged at the top of the crushing box body 1 and is closely communicated with the feed inlet 101. In the drying mechanism 3, a plurality of swinging plates 4 are provided and swing on the inner wall of the hopper 2. The plurality of swinging plates 4 are divided into two groups and are respectively positioned on the inner walls of the two sides of the hopper 2. When handling normal material, swing board 4 laminating is at hopper 2 inner wall, and equipment normal operating. When wet viscous materials are processed, the swinging plates 4 can swing under the action of external force and are far away from the inner wall of the hopper 2, and the swinging plates 4 are mutually matched to form a folded linear feeding channel in the hopper 2. The air supply pipe 5 is arranged on the bottom surface of the swinging plate 4 and is communicated with a plurality of air outlet holes 401. One end of the air supply pipe 5 is used for communicating with an external hot air supply unit, and the other end extends along the bottom surface of the swinging plate 4, so that hot air can be distributed to the air outlet holes 401, and hot air is supplied to the upper side of the swinging plate 4.

The working principle is that when the device detects that the wet viscous material needs to be processed, the swinging plate 4 swings under the action of external force and gradually gets away from the inner wall of the hopper 2, so that a folded linear feeding channel is formed. The fold line-shaped feeding channel increases the conveying length of the materials in the hopper 2 on the premise of not increasing the occupied space of the hopper 2, and provides more time for the contact and drying of the materials and hot air.

The hot air generated by the external hot air supply unit is delivered to the bottom surface of the swing plate 4 through the air supply pipe 5, and then is ejected from the air outlet holes 401 on the swing plate 4 to flow upward to the material area above the swing plate 4. The hot air is in contact with the materials to take away the moisture on the surfaces of the materials, so that the materials are dried in advance. Meanwhile, the material can fall back and forth among the plurality of swinging plates 4 and continuously turn over, so that hot air can more uniformly contact all parts of the material, and the drying effect is further improved.

The swinging plate 4 capable of swinging to form a folded feeding channel is arranged in the hopper 2, and the design of conveying hot air by combining the air supply pipe 5 is combined, so that the wet viscous material is dried. The fold line-shaped feeding channel increases the contact time of the material and hot air, and the hot air can be more comprehensively contacted with the material by the material tumbling, so that the water content of the material is reduced, the viscosity of the material is reduced, and the possibility of adhesion and accumulation of the material on the toothed roller is reduced from the source. After the wet viscous material subjected to the pre-drying treatment enters the crushing box body 1, the adhesion accumulation on the tooth roller can be reduced, and the crushing efficiency and the crushing quality are improved.

In some examples, as shown in fig. 3 to 6, a limiting column 402 is disposed on the swing plate 4, the limiting column 402 protrudes out of the side edge of the swing plate 4, and a plurality of arc-shaped sliding grooves 201 are correspondingly disposed on the side wall of the hopper 2, and the arc-shaped sliding grooves 201 can adapt to the movement track of the limiting column 402 when the swing plate 4 swings. Spacing posts 402 are in one-to-one correspondence through the arc-shaped chute 201, and the end portion protrudes out of the side wall of the hopper 2, a guiding and limiting effect is provided for the swinging of the swinging plate 4.

The outer wall of the hopper 2 is slidably provided with two driving plates 6, each driving plate 6 is provided with a driving chute 601, and the ends of the limit posts 402 of the two groups of swinging plates 4 are respectively located in the driving chutes 601 of the two driving plates 6 in a one-to-one correspondence manner. When the driving plate 6 slides, the driving chute 601 provides thrust for the limiting post 402, so as to drive the swinging plate 4 to swing.

The outer wall of the hopper 2 is rotatably provided with a bidirectional screw rod 7, and two ends of the bidirectional screw rod 7 are respectively in threaded connection with the two driving plates 6. The motor arranged on the outer wall of the hopper 2 drives the bidirectional screw rod 7 to rotate, and the two driving plates 6 are driven to slide in opposite directions or in opposite directions during rotation due to the opposite directions of threads at the two ends of the bidirectional screw rod 7. When the two driving plates 6 slide in opposite directions, the driving sliding chute 601 generates thrust to the limiting column 402, so that the limiting column 402 slides along the arc-shaped sliding chute 201, and further drives the swinging plate 4 to swing, so that a fold line-shaped feeding channel is formed.

The swing plate 4 is provided with a buffer plate 8, and the buffer plate 8 is connected with the swing plate 4 through a plurality of buffer springs 9 and is used for buffering the impact force of dropping materials. The buffer plate 8 is provided with a plurality of ventilation holes 801, so that the hot air blown out from the air outlet holes 401 of the swinging plate 4 can normally flow and fully contact with materials.

The working principle is that the motor drives the bidirectional screw rod 7 to rotate so as to drive the two driving plates 6 to slide in opposite directions or in opposite directions. When the driving plate 6 slides, the driving chute 601 applies a force to the limiting column 402, and the limiting column 402 drives the swinging plates 4 to swing under the guidance of the arc chute 201, so that synchronous driving of swinging of the swinging plates 4 is realized, and a folded feeding channel is formed.

When the material drops to the buffer plate 8 from the top, buffer spring 9 plays the cushioning effect, absorbs the impact force that the material falls, reduces the direct impact of material to swinging plate 4, protects swinging plate 4. Meanwhile, the ventilation holes 801 on the buffer plate 8 ensure that hot air can pass through the buffer plate 8 to be in contact with materials, so that the materials are dried, and the drying effect is not influenced.

In some examples, as shown in fig. 7, a pair of coarse crushing rollers 10 and a pair of fine crushing rollers 11 are rotatably provided in the crushing box 1, and the coarse crushing rollers 10 and the fine crushing rollers 11 are provided at an upper and lower interval. The coarse crushing roller 10 is located above and is responsible for primary crushing of the material entering the crushing box 1 from the hopper 2, and the fine crushing roller 11 is located below the coarse crushing roller 10 and is responsible for further crushing of the material after coarse crushing. A screen plate 12 is arranged between the coarse crushing roller 10 and the fine crushing roller 11, and the height of the screen plate 12 is gradually reduced from the middle to the two ends, and the screen plate is in a shape with high middle and low two ends. The sieve plate 12 is arranged on the inner wall of the crushing box body 1 in a movable connection mode, so that the sieve plate 12 can move within a certain range. An elastic member such as a rubber pad is provided between the screen plate 12 and the inner wall of the crushing box 1, while a conventional vibration element such as a vibration motor is installed below the screen plate 12.

The working principle is that materials firstly enter between the coarse crushing rollers 10, crushing teeth 1001 on the coarse crushing rollers 10 perform the functions of extrusion, shearing, splitting and the like on the materials, and large-sized materials are crushed into materials with medium particle sizes. The coarsely crushed material falls down to the screen deck 12, which is screened by the screen deck 12. The materials meeting the particle size requirement are guided to enter between the fine crushing rollers 11 through the sieve plates 12 by the guide plates 13 for crushing again, so that the particle size of the materials is further reduced, and the crushing effect is improved.

The screen plate 12 is driven by a vibration motor to vibrate, so that materials with smaller particle sizes and meeting the particle size requirements of the fine crushing roller 11 are dropped through the screen holes, the materials passing through the screen plate 12 are guided between the fine crushing rollers 11 by the guide plate 13, and crushed materials are discharged from the lower fine material discharge hole 1021. The design of the middle high end and the low end of the sieve plate 12 ensures that the materials which cannot pass through the sieve plate 12 and have larger particle size and do not meet the processing requirement of the fine crushing roller 11 roll down to the two ends, enter the gap between the fine crushing roller 11 and the crushing box body 1, and finally fall out from the coarse material discharge port 1022 below. The sorting discharging of the materials with different particle sizes is realized, and the subsequent targeted treatment of the materials is facilitated.

The coarse crushing roller 10 and the fine crushing roller 11 crush materials in sequence, so that the graded crushing is realized, the materials can gradually reach the required granularity, the crushing effect is better, and the granularity uniformity and quality of the product are improved. The arrangement of the screen plate 12 can screen the coarsely crushed materials, screen out the large-particle-size materials with particle sizes not meeting the processing requirements of the fine crushing roller 11, avoid blocking phenomena possibly caused by the materials entering the fine crushing roller 11, and ensure the normal operation of the fine crushing roller 11.

In some examples, as shown in fig. 7 to 12, a vertical material dividing plate 14 is disposed in the middle of the screen plate 12, so that the material output from the coarse crushing roller 10 can be dispersed to two sides of the screen plate 12. The rings of crushing teeth 1001 on the two rough crushing rolls 10 are staggered in the axial direction with respect to each other. The end of the distributor plate 14 is located in a lifting chute 103, which lifting chute 103 is used for guiding the sliding of the distributor plate 14. The top end of the distributing plate 14 is provided with a plurality of flexible scraping plates 15, the flexible scraping plates 15 are comb-shaped, the number of the flexible scraping plates 15 corresponds to the number of the crushing teeth 1001 on the two rough crushing rollers 10, and the flexible scraping plates are arranged in a one-to-one correspondence manner. The side wall of the crushing box body 1 is hinged with a plurality of box doors 104, and the positions of the box doors 104 correspond to the coarse crushing roller 10 and the fine crushing roller 11 respectively, so that an operator can conveniently maintain and overhaul the coarse crushing roller 10 and the fine crushing roller 11. The two ends of the telescopic piece are respectively hinged with the outer wall of the crushing box body 1 and the box door 104. The telescopic piece can be a hydraulic telescopic rod, an electric push rod and the like. When it is desired to open the door 104, the telescoping member is extended, pushing the door 104 to pivot open about the hinge.

The working principle is that the materials output from the coarse crushing roller 10 are dispersed to two sides of the sieve plate 12 under the action of the material separating plate 14, so that the materials are prevented from being accumulated in the middle area of the sieve plate 12. When the rough grinding roll 10 needs to be cleaned, the turning direction of the rough grinding roll 10 is controlled, as shown in fig. 7, the right rough grinding roll 10 is rotated clockwise, the left rough grinding roll 10 is rotated anticlockwise, so that the rough grinding roll 10 can rotate along the inclination direction of the grinding teeth 1001, then the part of the separating plate 14, which protrudes out of the grinding box body 1, is pushed upwards by a linear driving piece (such as a telescopic cylinder), so that the separating plate 14 moves upwards along the lifting chute 103, the comb-shaped flexible scraping plate 15 is driven to move upwards, and the part is gradually plugged between the two rough grinding rolls 10. Since the flexible scraper 15 is in one-to-one correspondence with the crushing teeth 1001, and the rough crushing roller 10 rotates in the oblique direction of the crushing teeth 1001 thereof, the crushing teeth 1001 can provide an urging force to the flexible scraper 15 during the slow rotation of the rough crushing roller 10, so that the flexible scraper 15 is deformed so as to be able to abut into the gap between two adjacent rings of crushing teeth 1001 on the rough crushing roller 10 on the opposite side, and finally abut against the outer peripheral surface of the rough crushing roller 10. Along with the slow rotation of the rough grinding roll 10, the flexible scraping plate 15 can scrape the materials accumulated on the roll surface, so that the rough grinding roll 10 is cleaned. After the cleaning is finished, the separating plate 14 is pulled downwards to reset, and the flexible scraping plate 15 which loses the pushing force also restores the previous shape.

It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.

Claims

1. A multi-toothed roller grading and crushing device, characterized in that it includes a crushing box (1), a hopper (2) and a drying mechanism (3), wherein the crushing box (1) has a feed inlet (101) and a discharge outlet (102), and the hopper (2) is located at the top of the crushing box (1) and communicates with the feed inlet (101);

The drying mechanism (3) includes a swing plate (4) and an air supply pipe (5). There are multiple swing plates (4), all of which are swinging on the inner wall of the hopper (2). The multiple swing plates (4) are divided into two groups and are located on the inner walls of both sides of the hopper (2). The multiple swing plates (4) can swing vertically and move away from the inner wall of the hopper (2) to form a zigzag feeding channel in the hopper (2).

The swing plate (4) is provided with a plurality of air outlets (401). The air supply pipe (5) is located on the bottom surface of the swing plate (4) and connects to the plurality of air outlets (401). The air supply pipe (5) is used to connect to an external hot air supply unit and supply hot air to the top of the swing plate (4) through the air outlets (401).

2. The multi-toothed roller grading and crushing device according to claim 1, characterized in that the swing plate (4) has limiting posts (402) on both sides, and the two side walls of the hopper (2) have a plurality of arc-shaped sliding grooves (201), and the plurality of limiting posts (402) are arranged to pass through the plurality of arc-shaped sliding grooves (201) one by one and slide in cooperation with the arc-shaped sliding grooves (201);

Two symmetrically distributed drive plates (6) are slidably arranged on the outside of the hopper (2). Each drive plate (6) corresponds to a set of swing plates (4). The drive plate (6) is provided with a drive groove (601). The limiting post (402) of the swing plate (4) in the same set is slidably engaged with the drive groove (601) of the drive plate (6). The swing plate (4) can swing vertically with the help of the sliding engagement of the limiting post (402) and the drive groove (601) when the drive plate (6) slides.

A bidirectional screw (7) is rotatably provided on the outside of the hopper (2), and two drive plates (6) are threaded to the two ends of the bidirectional screw (7). The bidirectional screw (7) can drive the two drive plates (6) to slide towards or away from each other.

3. The multi-toothed roller grading and crushing device according to claim 1, characterized in that a buffer plate (8) is provided on the swing plate (4), a plurality of buffer springs (9) are connected between the swing plate (4) and the buffer plate (8), and the buffer plate (8) has a plurality of air vents (801).

4. A multi-tooth roller grading crushing device according to claim 1, characterized in that a pair of coarse crushing rollers (10) and a pair of fine crushing rollers (11) are rotatably arranged inside the crushing box (1), the coarse crushing rollers (10) and the fine crushing rollers (11) are arranged vertically at intervals, for sequentially coarsely crushing and finely crushing the material.

5. A multi-toothed roller grading and crushing device according to claim 4, characterized in that a vibrating screen plate (12) is provided between the coarse crushing roller (10) and the fine crushing roller (11), the height of the screen plate (12) gradually decreases from the middle to both sides, the screen plate (12) can screen the material output by the coarse crushing roller (10), so that the material with a particle size smaller than the screen hole size of the screen plate (12) falls between the two fine crushing rollers (11) for fine crushing, and the material with a particle size larger than the screen hole size of the screen plate (12) is guided to the gap between the fine crushing roller (11) and the crushing box (1);

The discharge port (102) includes a fine material discharge port (1021) and a coarse material discharge port (1022). The fine material discharge port (1021) is located below the gap between the two fine crushing rollers (11) and is used to receive the fine material after being crushed by the two fine crushing rollers (11). The coarse material discharge port (1022) is located below the gap between the fine crushing rollers (11) and the crushing box (1) and is used to receive the coarse material screened out by the screen plate (12).

6. A multi-toothed roller grading and crushing device according to claim 5, characterized in that, a guide plate (13) inclined to the adjacent side is symmetrically provided below the screen plate (12), and the guide plate (13) is used to guide the material screened off by the screen plate (12) to the two fine crushing rollers (11) for fine crushing.

7. A multi-toothed roller grading and crushing device according to claim 5, characterized in that a material distribution plate (14) is provided in the middle of the screen plate (12), and the material distribution plate (14) is used to disperse the coarse material coarsened by the coarse crushing roller (10) to both sides of the screen plate (12).

8. A multi-toothed roller grading and crushing device according to claim 7, characterized in that a plurality of crushing teeth (1001) on the two coarse crushing rollers (10) are staggered along the axial direction, the material distribution plate (14) is slidably disposed in the middle of the screen plate (12) along the vertical direction, and a plurality of flexible scrapers (15) are provided at the top of the material distribution plate (14), the plurality of flexible scrapers (15) are comb-shaped and correspond one-to-one with the plurality of crushing teeth (1001) on the two coarse crushing rollers (10);

Several of the flexible scrapers (15) can move upward under the drive of the material distribution plate (14) and alternately flexibly abut against the crushing teeth (1001) on the two coarse crushing rollers (10) to clean the gaps between the crushing teeth (1001).

9. A multi-toothed roller grading crushing device according to claim 8, characterized in that both sides of the crushing box (1) are provided with lifting grooves (103), the end of the material distribution plate (14) is slidably disposed in the lifting grooves (103), and the end of the material distribution plate (14) is connected to a linear drive member for driving the material distribution plate (14) to rise and fall.

10. A multi-toothed roller grading crushing device according to claim 4, characterized in that a plurality of doors (104) are hinged to the side wall of the crushing box (1), the plurality of doors (104) are horizontally corresponding to the coarse crushing roller (10) or the fine crushing roller (11), and a telescopic member is provided between the crushing box (1) and the doors (104), the telescopic member being used to drive the doors to open and close.