CN110918170A

CN110918170A - Chemical material's crushing stoving sieving mechanism

Info

Publication number: CN110918170A
Application number: CN201911271443.3A
Authority: CN
Inventors: 杨银龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-03-27

Abstract

The invention discloses a chemical material crushing, drying and screening device which comprises a box body, a first sieve plate, a second sieve plate, crushing rollers and an air heater, wherein a first sliding chute and a second sliding chute are arranged on the front inner wall and the rear inner wall of the left upper part of an inner cavity of the box body; chemical raw material particles with the particle size meeting the requirement are screened and dropped onto the sliding plate through the first sieve plate and the second sieve plate, and chemical raw material particles with the larger particle size and without the requirement are screened and crushed by the crushing roller, so that the particle size of the chemical raw material particles meets the requirement; when then the industrial chemicals that the particle diameter meets the requirements fell down to blow to the left arc recess of box inner chamber bottom by the air heater, later the (mixing) shaft drives the stirring leaf and rotates the industrial chemicals who stirs in the arc recess, the industrial chemicals that the leaf stirred that will stir is dried to the hot-blast that also blew off of air heater simultaneously, the piece of drying, effectually, and the industrial chemicals granule of drying can be blown off from the discharge gate, and whole work goes on at the box inner chamber, can not extravagant and raise dust pollution.

Description

Chemical material's crushing stoving sieving mechanism

Technical Field

The invention relates to the technical field of chemical machinery, in particular to a crushing, drying and screening device for chemical materials.

Background

The development of the dryer in the future is a basic trend of the development of the dryer by deeply researching a drying mechanism and material drying characteristics and mastering optimal operating conditions for different materials, and simultaneously further researching and developing novel efficient dryers adapting to special requirements, such as a combined dryer, a microwave dryer, a far infrared dryer and the like, wherein the development of the dryer is also focused on energy conservation and comprehensive energy utilization, such as the adoption of various combined heating modes, the transplantation of a heat pump and a heat pipe technology, the development of a solar dryer and the like, and the development of an automatic control technology of the dryer is also needed to ensure the realization of the optimal operating conditions.

In addition, with the attention of human beings on environmental protection, environmental protection measures of the dryer are improved to reduce the leakage of dust and waste gas, and the like, and the direction of deep research is needed, a lot of dust is inevitably scattered in the dust drying process, if some larger particles in the dust are in the dust, the overall average particle size of the material is influenced, so that the quality of the material is influenced, the existing powder material conveying and drying equipment has larger dust pollution, and auxiliary equipment for continuously screening and crushing during conveying is not available; therefore, the technical personnel in the field provide a crushing, drying and screening device for chemical materials, so as to solve the problems in the background technology.

Disclosure of Invention

The invention aims to provide a chemical material crushing, drying and screening device to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a crushing, drying and screening device for chemical materials comprises a box body, a first sieve plate, a second sieve plate, a crushing roller and a hot air blower, wherein a first sliding chute and a second sliding chute are arranged on the front inner wall and the rear inner wall of the left upper part of an inner cavity of the box body, the first sliding chute and the second sliding chute are parallel up and down and are inclined towards the lower right side, the first sieve plate and the second sieve plate are arranged in the first sliding chute and the second sliding chute, the left ends of the front first sliding chute and the rear first sliding chute and the left ends of the two second sliding chutes are respectively connected with the left end faces of the first sieve plate and the second sieve plate through springs, a rolling contact part is fixedly arranged in the middle of the left end faces of the first sieve plate and the second sieve plate, the rolling contact part is composed of a U-shaped frame and a roller and is; the inner wall of the left side of the inner cavity of the box body, which is positioned below the second sieve plate, is fixedly connected with a mounting table, a first motor is fixedly mounted on the mounting table, the output end of the first motor is fixedly connected with a cam shaft, the upper end of the cam shaft is fixedly connected with the top wall of the box body through a bearing, two cams are arranged on the cam shaft respectively corresponding to the positions of the cams on the first sieve plate and the second sieve plate, and the cams are movably contacted with rollers in the rolling contact piece; the right lower sides of the first sieve plate and the second sieve plate are provided with sieve hoppers fixed in an inner cavity of the box body, two crushing rollers are symmetrically arranged at the left and right of a lower port of each sieve hopper, rolling sleeves are sleeved on the crushing rollers, the crushing rollers are fixedly sleeved on rotating shafts, the two rotating shafts are in rolling connection with the front wall and the rear wall of the box body through bearings, the rear ends of the two rotating shafts penetrate through the rear wall of the box body and are fixedly sleeved with two gears meshed with each other, and the rear end of one rotating shaft is fixedly connected with a first belt pulley; a crushing hopper is fixed in the inner cavity of the box body under the two crushing rollers, a sliding plate inclined towards the crushing hopper is arranged in the inner cavity of the box body under the second sieve plate, and the front side edge and the rear side edge of the sliding plate are fixedly connected with the front inner wall and the rear inner wall of the box body; the lower part of the right side wall of the box body is fixedly provided with an air heater, an air outlet of the air heater horizontally faces the crushing hopper and the lower part of the sliding plate, the right side of the bottom of the inner cavity of the box body is provided with a slope, the left lower part of the inner cavity of the box body is provided with a stirring shaft, the front end and the rear end of the stirring shaft are in rolling connection with the inner wall of the box body through bearings, a stirring blade is arranged on the stirring shaft, the rear end of the stirring shaft penetrates through the rear wall of the box body and is fixedly connected with a third belt wheel, the rear side wall of the box body is fixedly provided with a second motor, the output end of the second motor; the box left side wall lower part is provided with the discharge gate, and the position that the box top corresponds first sieve upper left portion is provided with the feeder hopper.

As a further scheme of the invention: the phase angles of the two cams on the camshaft are different by one hundred and eighty degrees.

As a still further scheme of the invention: be provided with the sieve mesh on first sieve and the second sieve to the aperture of the sieve mesh on the second sieve is less than the sieve mesh aperture on the first sieve.

As a still further scheme of the invention: vibration exciters are arranged on the bottom surfaces of the screen bucket and the sliding plate.

As a still further scheme of the invention: two brushes are fixedly installed on the left side and the right side of the port of the top of the crushing hopper, and the left brush and the right brush are respectively contacted with the left crushing roller and the right crushing roller.

As a still further scheme of the invention: the left side of the bottom wall of the inner cavity of the box body is provided with an arc-shaped groove, and the arc-shaped groove is in clearance fit with the stirring blades.

As a still further scheme of the invention: the stirring blades on the stirring shaft are obliquely arranged.

As a still further scheme of the invention: the universal wheels are symmetrically arranged at four corners of the bottom of the box body, and the universal wheels are provided with locking shafts which are convenient to fix.

As a still further scheme of the invention: the front end face and the rear end face of the mounting table are fixedly connected with the front inner wall and the rear inner wall of the box body, and non-woven fabrics are connected between the right side edge of the mounting table and the bottom surface of the upper part of the sliding plate.

Compared with the prior art, the invention has the beneficial effects that:

the chemical raw material particle size screening device is reasonable in structural design, chemical raw material particles with the particle sizes meeting requirements are screened onto the sliding plate through the first sieve plate and the second sieve plate, the chemical raw material particles with the larger particle sizes and not meeting the requirements are screened out and are crushed by the crushing rollers through the diversion of the sieve hopper, so that the particle sizes of the chemical raw material particles meet the requirements, gaps of the two crushing roller pieces can be adjusted by replacing the first sieve plate and the second sieve plate and replacing roller sleeves on the two crushing rollers, and the chemical raw material particles with different particle sizes can be screened and crushed; then, chemical raw materials with the particle size meeting the requirement are guided by the sliding plate and the crushing hopper to fall down and are blown into the arc-shaped groove on the left side of the bottom of the inner cavity of the box body by the air heater, then the stirring shaft drives the stirring blades to rotate to stir the chemical raw materials in the arc-shaped groove, meanwhile, the hot air blown out by the air heater dries the chemical raw materials stirred by the stirring blades, and the dried chemical raw materials are dried into blocks with good effect, and the dried chemical raw material particles can be blown out from the discharge port; in addition, non-woven fabrics are connected between the right side edge of the mounting table and the bottom surface of the upper part of the sliding plate, so that dust of chemical raw materials is prevented from falling onto the first motor, and the safety of the first motor is protected; the processes of drying, crushing and stirring are all completed in the inner cavity of the box body, powder cannot scatter, waste cannot be easily caused, and large dust pollution cannot be easily caused.

Drawings

Fig. 1 is a schematic structural diagram of a chemical material crushing, drying and screening device.

Fig. 2 is an enlarged schematic structural diagram of a position a in the chemical material crushing, drying and screening device.

Fig. 3 is a back structure schematic diagram of a chemical material crushing, drying and screening device.

FIG. 4 is a schematic view showing the connection between the stirring shaft and the stirring blade in the chemical material pulverizing, drying and screening apparatus.

In the figure: the device comprises a box body 1, an arc-shaped groove 101, a first chute 2, a second chute 200, a first sieve plate 3, a second sieve plate 300, a roller contact piece 4, a U-shaped frame 401, a roller 402, a spring 5, a cam shaft 6, a cam 7, a first motor 8, a mounting table 9, a sieve hopper 10, a rotating shaft 11, a crushing roller 12, a rolling sleeve 121, a brush 13, a crushing hopper 14, a sliding plate 15, a hot air blower 16, a slope 17, a stirring shaft 18, a stirring blade 19, a discharge port 20, a universal wheel 21, a feed hopper 22, a vibration exciter 23, a gear 24, a first belt wheel 25, a second motor 26, a second belt wheel 27, a third belt wheel 28, a belt 29 and non-woven fabric 30.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one.. said element does not exclude the presence of other like elements in the process, method, article or apparatus that comprises the element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 4, in an embodiment of the present invention, a chemical material pulverizing, drying and screening apparatus includes a box 1, a first sieve plate 3, a second sieve plate 300, a pulverizing roller 12 and a hot air blower 16, a first chute 2 and a second chute 200 are arranged on the front inner wall and the rear inner wall of the left upper part of the inner cavity of the box body 1, the first chute 2 and the second chute 200 are parallel up and down and are inclined towards the lower right part, a first sieve plate 3 and a second sieve plate 300 are arranged in the first chute 2 and the second chute 200, the left ends of the front first chute 2 and the rear second chute 200 are respectively connected with the left end surfaces of the first sieve plate 3 and the second sieve plate 300 through springs 5, a rolling contact part 4 is fixedly arranged in the middle of the left end surfaces of the first sieve plate 3 and the second sieve plate 300, the rolling contact part 4 consists of a U-shaped frame 401 and rollers 402 and is fixedly connected with the middle of the left end surfaces of the two sieve plates 300 of the U-shaped frame 401, and the rollers 402 are arranged in the; the inner wall of the left side of the inner cavity of the box body 1, which is positioned below the second sieve plate 300, is fixedly connected with a mounting table 9, a first motor 8 is fixedly mounted on the mounting table 9, the output end of the first motor 8 is fixedly connected with a cam shaft 6, the upper end of the cam shaft 6 is fixedly connected with the top wall of the box body 1 through a bearing, two cams 7 are arranged on the cam shaft 6 respectively corresponding to the positions of the cams 7 on the first sieve plate 3 and the second sieve plate 300, and the cams 7 are movably contacted with rollers 402 in the roller contact piece 4; the right lower sides of the first sieve plate 3 and the second sieve plate 300 are provided with sieve hoppers 10 fixed in the inner cavity of the box body 1, the lower ports of the sieve hoppers 10 are bilaterally symmetrically provided with two crushing rollers 12, the crushing rollers 12 are sleeved with roller sleeves 121, the crushing rollers 12 are fixedly sleeved on rotating shafts 11, the two rotating shafts 11 are in rolling connection with the front wall and the rear wall of the box body 1 through bearings, the rear ends of the two rotating shafts 11 penetrate through the rear wall of the box body 1 and are fixedly sleeved with two gears 24 which are meshed with each other, and the rear end of one rotating shaft 11 is fixedly connected with a first belt wheel 25; a crushing hopper 14 is fixed in the inner cavity of the box body 1 under the two crushing rollers 12, a sliding plate 15 inclined towards the crushing hopper 14 is arranged in the inner cavity of the box body 1 under the second sieve plate 300, and the front side edge and the rear side edge of the sliding plate 15 are fixedly connected with the front inner wall and the rear inner wall of the box body 1; an air heater 16 is fixedly installed at the lower part of the right side wall of the box body 1, an air outlet of the air heater 16 horizontally faces below the crushing hopper 14 and the sliding plate 15, a slope 17 is arranged at the right side of the bottom of an inner cavity of the box body 1, a stirring shaft 18 with the front end and the rear end in rolling connection with the inner wall of the box body 1 through bearings is arranged at the left lower part of the inner cavity of the box body 1, a stirring blade 19 is arranged on the stirring shaft 18, the rear end of the stirring shaft 18 penetrates through the rear wall of the box body 1 and is fixedly connected with a third belt wheel 28, a second motor 26 is fixedly installed at the rear side wall of the box body 1, the output end of the second motor 26 is fixedly connected with a second belt wheel 27, and two; the lower part of the left side wall of the box body 1 is provided with a discharge hole 20, and the top of the box body 1 is provided with a feed hopper 22 corresponding to the upper left part of the first sieve plate 3.

The phase angles of the two cams 7 on the cam shaft 6 are different by one hundred eighty degrees, so that the two cams 7 alternately sieve the first sieve plate 3 and the second sieve plate 300 through the transmission of the rolling contact piece.

The first sieve plate 3 and the second sieve plate 300 are provided with sieve holes, and the pore diameter of the sieve hole on the second sieve plate 300 is smaller than that of the sieve hole on the first sieve plate 3.

The vibration exciter 23 is installed on the bottom surfaces of the sieve hopper 10 and the sliding plate 15 to facilitate the sliding of the chemical materials, and the vibration exciter 23 is an electromagnetic vibration exciter, which is well known in the art and has a structure and a principle that will not be described in detail herein.

Two brushes 13 are fixedly arranged on the left side and the right side of the top end opening of the crushing hopper 14, and the left brush 13 and the right brush 13 are respectively contacted with the left crushing roller 12 and the right crushing roller 12; so as to brush the chemical material which is stuck and remained on the pulverizing roller 12 down into the pulverizing hopper 14.

Arc-shaped grooves 101 are formed in the left side of the bottom wall of the inner cavity of the box body 1, and the arc-shaped grooves 101 are in clearance fit with the stirring blades 19.

Stirring shaft 18 is last stirring leaf 19 for the slope setting, is convenient for raise industrial chemicals from the arc to recess 101.

Four corners of the bottom of the box body 1 are symmetrically provided with universal wheels 21, and the universal wheels 21 are provided with locking shafts which are convenient to fix.

Inner wall fixed connection around terminal surface and the box 1 around the mount table 9, be connected with non-woven fabrics 30 between 9 right sides of mount table and the 15 upper portion bottom surfaces of slide, prevent that the industrial chemicals raise dust from falling first motor 8 on, protect first motor 8 safety.

The first motor 8, the second motor 26, the hot air blower 16 and the vibration exciter 23 are electrically connected with an external power supply through wires.

The working principle of the invention is as follows:

the invention relates to a crushing, drying and screening device for chemical materials, when in work, the chemical materials crushed in advance enter a box body 1 from a feed hopper 22 and fall on a first screen plate 3, a first motor 8 rotates to drive a cam shaft 6 and a cam 7 to rotate, the cam 7 pushes a roller contact piece 4 and a spring 5 to rebound, the first screen plate 3 and a second screen plate 300 can respectively sieve back and forth in a first chute 2 and a second chute 200, so that large chemical raw material particles on the first sieve plate 3 slide down to the sieve hopper 10, smaller chemical raw material particles fall down to the second sieve plate 300, then the second sieve plate 300 is sifted to make the small chemical raw material particles with the particle size meeting the requirement fall on the sliding plate 15, while the smaller chemical raw material particles with the particle size not meeting the requirement also fall into the sieve hopper 10, then, chemical raw material particles in the sieve hopper 10 fall between the two crushing rollers 12, are rolled and crushed to be driven to fall into a crushing hopper 14 after being required; the gaps of the two crushing rollers 12 can be adjusted by replacing the first sieve plate 3 and the second sieve plate 300 and replacing the roller sleeves 121 on the two crushing rollers 12, so that chemical raw material particles with different particle sizes can be screened and crushed; the chemical raw materials with the particle diameters meeting the requirements in the sliding plate 15 and the crushing hopper 14 continuously fall down, are dried by the hot air blower 16 and are blown into the arc-shaped groove 101 in the left side of the bottom wall of the inner cavity of the box body 1, and are stirred and raised by the stirring blade 19 driven by the stirring shaft 18, so that hot air blown by the hot air blower 16 is dried better and faster, and meanwhile, the dried chemical raw material particles with lighter mass can be blown out from the discharge hole 20 by the hot air; in addition, a non-woven fabric 30 is connected between the right side edge of the mounting table 9 and the bottom surface of the upper part of the sliding plate 15, so that the dust of chemical raw materials is prevented from falling onto the first motor 8, and the safety of the first motor 8 is protected; the processes of drying, crushing and stirring are all completed in the inner cavity of the box body 1, powder cannot scatter, waste cannot be easily caused, and large dust pollution cannot be easily caused.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a chemical material's crushing stoving sieving mechanism, includes box (1), first sieve (3), second sieve (300), crushing roller (12) and air heater (16), a serial communication port, all be provided with first spout (2) and second spout (200) on the inner wall around the upper left portion of box (1) inner chamber, first spout (2) and second spout (200) are parallel from top to bottom and all to the below right slope, be provided with first sieve (3) and second sieve (300) in first spout (2) and second spout (200), the left end of two first spouts (2) and two second spouts (200) of front and back all is connected with the left end face of first sieve (3) and second sieve (300) respectively through spring (5), first sieve (3) and second sieve (300) left end face middle part fixed mounting have a roller touch piece (4), roller touch piece (4) constitute and U-shaped frame (401) and U-shaped frame (402) two sieve (300) left end face fixed mounting have a roller touch piece (4), roller touch piece (4) are constituteed by U-shaped frame (401) and U-shaped frame (401) two sieve (300 The middle parts of the end surfaces are fixedly connected, and the rollers (402) are arranged in the U-shaped frame (401); the inner wall of the left side of the inner cavity of the box body (1) below the second sieve plate (300) is fixedly connected with a mounting table (9), a first motor (8) is fixedly mounted on the mounting table (9), the output end of the first motor (8) is fixedly connected with a cam shaft (6), the upper end of the cam shaft (6) is fixedly connected with the top wall of the box body (1) through a bearing, two cams (7) are arranged on the cam shaft (6) respectively corresponding to the cams (7) on the first sieve plate (3) and the second sieve plate (300), and the cams (7) are movably contacted with rollers (402) in the rolling contact piece (4); the right lower sides of the first sieve plate (3) and the second sieve plate (300) are provided with sieve hoppers (10) fixed in an inner cavity of the box body (1), the lower ports of the sieve hoppers (10) are bilaterally symmetrically provided with two crushing rollers (12), the crushing rollers (12) are sleeved with roller sleeves (121), the crushing rollers (12) are fixedly sleeved on rotating shafts (11), the two rotating shafts (11) are in rolling connection with the front wall and the rear wall of the box body (1) through bearings, the rear ends of the two rotating shafts (11) penetrate through the rear wall of the box body (1) and are fixedly sleeved with two gears (24) which are meshed with each other, and the rear end of one rotating shaft (11) is fixedly connected with a first belt wheel (25; a crushing hopper (14) is fixed in the inner cavity of the box body (1) under the two crushing rollers (12), a sliding plate (15) inclined to the crushing hopper (14) is arranged in the inner cavity of the box body (1) under the second sieve plate (300), and the front side edge and the rear side edge of the sliding plate (15) are fixedly connected with the front inner wall and the rear inner wall of the box body (1); the air-conditioning crushing bin is characterized in that an air heater (16) is fixedly mounted on the lower portion of the right side wall of the box body (1), an air outlet of the air heater (16) horizontally faces the lower portion of the crushing hopper (14) and the sliding plate (15), a slope (17) is arranged on the right side of the bottom of an inner cavity of the box body (1), a stirring shaft (18) with the front end and the rear end in rolling connection with the inner wall of the box body (1) through a bearing is arranged on the lower left portion of the inner cavity of the box body (1), a stirring blade (19) is arranged on the stirring shaft (18), the rear end of the stirring shaft (18) penetrates through the rear wall of the box body (1) and is fixedly connected with a third belt wheel (28), a second motor (26) is fixedly mounted on the rear side wall of the box body (1), a second belt wheel (27) is fixedly connected with an output end of the second motor; the lower part of the left side wall of the box body (1) is provided with a discharge hole (20), and the top of the box body (1) is provided with a feed hopper (22) corresponding to the upper left part of the first sieve plate (3).

2. The crushing, drying and screening device for the chemical materials as claimed in claim 1, wherein the phase angle of the two cams (7) on the cam shaft (6) is different by one hundred eighty degrees.

3. The chemical material pulverizing, drying and screening apparatus as claimed in claim 1, wherein the first sieve plate (3) and the second sieve plate (300) are provided with sieve holes, and the diameter of the sieve holes on the second sieve plate (300) is smaller than that of the sieve holes on the first sieve plate (3).

4. The chemical material crushing, drying and screening device according to claim 1, wherein vibration exciters (23) are installed on the bottom surfaces of the sieve hopper (10) and the sliding plate (15).

5. The chemical material crushing, drying and screening device as claimed in claim 1, wherein two brushes (13) are fixedly installed on the left side and the right side of the top port of the crushing hopper (14), and the left brush (13) and the right brush (13) are respectively contacted with the left crushing roller (12) and the right crushing roller (12).

6. The chemical material crushing, drying and screening device as claimed in claim 1, wherein an arc-shaped groove (101) is formed in the left side of the bottom wall of the inner cavity of the box body (1), and the arc-shaped groove (101) is in clearance fit with the stirring blade (19).

7. The chemical material crushing, drying and screening device as claimed in claim 1, wherein the stirring blades (19) on the stirring shaft (18) are arranged obliquely.

8. The chemical material crushing, drying and screening device as claimed in claim 1, wherein universal wheels (21) are symmetrically arranged at four corners of the bottom of the box body (1), and the universal wheels (21) are provided with locking shafts which are convenient for fixing the universal wheels.

9. The chemical material crushing, drying and screening device as claimed in claim 1, wherein the front and rear end faces of the mounting table (9) are fixedly connected with the front and rear inner walls of the box body (1), and a non-woven fabric (30) is connected between the right side edge of the mounting table (9) and the bottom surface of the upper part of the sliding plate (15).