CN111515217B

CN111515217B - Mechanical dehydration drying equipment for slag with water content of more than 40%

Info

Publication number: CN111515217B
Application number: CN201910109175.9A
Authority: CN
Inventors: 邢奕; 林如阳; 曾悬荣; 朱宏伟; 郭丹辉; 徐国坪
Original assignee: Xiamen XGMA Heavy Industry Co Ltd
Current assignee: Xiamen XGMA Heavy Industry Co Ltd
Priority date: 2019-02-04
Filing date: 2019-02-04
Publication date: 2021-06-01
Anticipated expiration: 2039-02-04
Also published as: CN111515217A

Abstract

A mechanical dehydration drying device for slag materials with water content of more than 40% divides the interior of a working bin into a crushing bin, an accelerating bin and a feeding bin which are communicated with each other in sequence, wherein the crushing bin and the feeding bin are in the shape of a cylindrical cavity, the accelerating bin in the middle is in the shape of a circular truncated cone cavity, the large-diameter end surface of the circular truncated cone cavity of the accelerating bin is adjacent to the crushing bin, the small-diameter end surface of the circular truncated cone cavity of the accelerating bin is adjacent to the feeding bin, a feeding tee joint is connected above the crushing bin, a discharging port is arranged at the top of the feeding bin, and; utilize the pivot to drive the pay-off storehouse, with higher speed the high-speed rotation of knife rest module in storehouse and the broken storehouse, make the interior negative pressure that forms of working bin, the slag charge inhales via the feeding tee bend, gets into the pay-off storehouse after the collision extrusion is repeated to knife rest module in broken storehouse and the storehouse with higher speed, collides the extrusion once more and carries to the discharging pipe through the knife rest module of pay-off storehouse at last. The sludge and the slag after being treated by the normal temperature drying equipment form fine powder with the water content of less than 20 percent and the grain diameter of not more than 200 mu m.

Description

Mechanical dehydration drying equipment for slag with water content of more than 40%

Technical Field

The invention relates to a drying device, in particular to a mechanical dehydration drying device for slag with water content of more than 40%.

Background

With the acceleration of urbanization process, population increase, improvement of resident living standard and development of chemical industry, the sludge and slag charge treatment capacity in China is rapidly increased. At present, the water content of sludge and organic slag materials is reduced to about 45 to 60 percent mainly by filter pressing equipment in the treatment of sludge and slag materials in China, and if the water content needs to be further reduced, the water content of the sludge and the slag materials is reduced to about 20 percent by heat drying equipment. Sludge and slag materials need to be heated in the heat drying process, a large amount of heat energy is consumed, harmful gases such as hydrogen sulfide and the like and odor can be generated in the heating process, tail gas treatment is needed to achieve the emission standard, and the treatment cost and the treatment period of the sludge and the slag materials are greatly increased.

Disclosure of Invention

The invention aims to provide a drying device for mechanically dehydrating slag with high water content at normal temperature.

In order to achieve the above purpose, the solution of the invention is: a mechanical dehydration drying device for slag materials with water content of more than 40% comprises a feeding tee joint, a working bin, a first tool rest module, a second tool rest module, a third tool rest module, a motor module and a discharging pipe; the feeding tee joint comprises a first inlet for pouring slag, a second inlet communicated with the atmosphere and an outlet for outputting the slag; the interior of the working bin is sequentially divided into a crushing bin, an accelerating bin and a feeding bin which are communicated with each other; the crushing bin is connected with an outlet of a feeding tee joint at one side far away from the feeding bin, the accelerating bin forms a cavity with a gradually reduced opening in the direction from the crushing bin to the feeding bin, the top of the feeding bin is provided with a discharging port, and a discharging pipe is connected above the discharging port; the motor module comprises a motor and a rotating shaft, wherein one end of the rotating shaft is arranged on the motor and is driven by the motor to rotate, the other end of the rotating shaft sequentially penetrates through the feeding bin, the accelerating bin and the crushing bin, the rotating shaft is at least fixedly connected with a first tool rest module in the crushing bin, at least fixedly connected with a second tool rest module in the accelerating bin and at least fixedly connected with a third tool rest module in the feeding bin, the first tool rest module comprises a tool rest and a plurality of first tools, the quadrangle of the first tools inclines towards the outlet of the feeding tee joint, so that the first tool forms a first inclined edge towards the outer diameter end of the inner cavity wall of the crushing bin, and the first inclined edge gradually reduces the distance between the outlet of the feeding tee joint and the inner cavity wall of the accelerating bin. Each tool rest module is driven by the rotating shaft to rotate, negative pressure is formed in the working bin through high-speed rotation of a third tool rest module positioned in the feeding bin, slag is sucked through an outlet of the feeding tee joint, passes through the crushing bin, is subjected to once repeated collision extrusion by the first tool rest module, is subjected to secondary repeated collision extrusion by a second tool rest module in the accelerating bin, and is finally subjected to tertiary collision extrusion by the third tool rest module in the feeding bin and is conveyed to the discharging pipe.

Through the arrangement, the top of the feeding bin is provided with the discharge port, the acceleration bin forms a cavity with a gradually reduced opening from the crushing bin to the feeding bin, when the rotating shaft rotates at a high speed and synchronously drives the third cutter module to rotate at a high speed, air in the feeding bin is discharged to the discharge port, and great negative pressure is generated in the crushing bin, so that slag is very easily sucked from the outlet of the feeding tee joint, and the slag does not need to be transported by connecting a centrifugal fan outside the crushing bin; simultaneously because the export setting of feeding tee bend is in the one side of keeping away from the feeding bin, consequently the slag charge need be in proper order through the first knife rest module in broken storehouse under the fluidic drive of air, the second knife rest module in storehouse and the third knife rest module in feeding bin collide the extrusion repeatedly just can be carried to the discharge gate, at the in-process of transportation, the slag charge of moisture caking disperses gradually after the collision extrusion, wrap up giving off of moisture in the slag charge with higher speed, reach the mechanical dehydration of slag charge under normal atmospheric temperature state.

Meanwhile, in order to further improve the efficiency of mechanical dehydration of slag materials in the working bin, the invention obtains the optimal structural design by repeatedly testing the shapes and the installation position angles of the first cutter in the first cutter rest module, the second cutter in the second cutter rest module and the third cutter rest in the third cutter rest module, and specifically comprises the following steps:

the quadrilateral outer diameter end of the second cutter is provided with a second bevel edge, and the distance between the second bevel edge and the inner cavity wall of the crushing bin is gradually reduced from the crushing bin to the feeding bin.

Through the design, when slag moves along with the advancing direction of the air fluid, the slag repeatedly collides among the first cutters and between the first cutters and the inner cabin wall of the crushing cabin in the crushing cabin, due to the arrangement of the first bevel edge, during the high-speed rotation of the first cutters, cyclone is generated between the first cutters and the inner cavity wall of the crushing cabin, part of the slag is thrown to the cyclone area after being flapped and collided by the first cutters, the part of the slag is repeatedly collided and extruded between the outer diameter ends of the first cutters and the inner cavity wall of the crushing cabin, only the slag with small particle size easily overcomes the cyclone and is sucked into the accelerating cabin, and the rest of the slag between the first cutters is repeatedly collided and extruded by the first cutters which are arranged oppositely, so that the slag with small particle size is more easily sucked into the accelerating cabin; the second bevel edge is arranged in the acceleration bin, so that the cyclone air is formed between the second bevel edge and the inner cavity wall of the acceleration bin, part of slag is thrown to the cyclone area after being flapped and collided by the second cutter, the part of slag is repeatedly collided and extruded between the outer diameter end of the second cutter and the inner cavity wall of the acceleration bin, the slag with smaller particle size is easy to overcome the cyclone air and is sucked into the feeding bin, the residual slag is positioned between the second cutters, the part of slag is repeatedly collided and extruded by the second cutters which are arranged oppositely, and the slag with smaller particle size is easier to be sucked into the feeding bin.

The quadrangle of third cutter a minor face and long limit have in proper order along the radial direction of pivot for have third hypotenuse and fourth hypotenuse between minor face and the long limit, the interval convergent between this third hypotenuse and fourth hypotenuse and the feeding bin both sides inner chamber wall.

Through the design of the short edge and the long edge of the third cutter, a larger accommodating space is formed at the joint of the acceleration bin and the feeding bin, slag materials are easier to be sucked into the feeding bin from the acceleration bin, meanwhile, due to the design of the short edge, part of slag is easy to eject from the two sides of the short edge when in collision extrusion and collides with the inner cavity walls at the two sides of the feeding bin, which are vertical to the rotating shaft, again, and the third bevel edge and the fourth bevel edge respectively generate cyclone between the inner cavity walls, so that the slag with smaller particle size is sucked into the discharging port by overcoming the cyclone, and the slag between the third cutters is remained, the part of slag is repeatedly collided and extruded by a third cutter arranged oppositely and thrown out to the outer diameter end of the third cutter, because the feeding bin is only provided with a discharge hole, the slag is repeatedly collided and extruded between the long edge of the third cutter and the inner cavity walls at two sides parallel to the rotating shaft, and the slag which is further decomposed into smaller grain size is sucked into the discharge hole.

In order to reduce the manufacturing cost, the inner chambers of the crushing bin, the accelerating bin and the feeding bin can be realized by additionally arranging lining plates.

Meanwhile, in order to realize the feeding of the slag and the frequency of collision extrusion in the working bin, the water in the slag is better analyzed, the rotating speed of the rotating shaft is more than 2500r/min, and the air speed of a discharge hole (231) of the feeding bin is more than or equal to 60 m/s.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 3 is a schematic view of a cutting tool according to an embodiment of the present invention;

FIG. 4 is a schematic view of multiple tool holders according to an embodiment of the invention;

FIG. 5 is a schematic view of the slag and gas flow direction of an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

fig. 7 is a partially enlarged view at B in fig. 5.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

As shown in fig. 1-5, a mechanical dewatering and drying apparatus for slag with a water content of more than 40% comprises a feeding tee 1, a working bin 2, a first tool rest module 31, a second tool rest module 32, a third tool rest module 33, a motor module, a discharging pipe 5 and a base 6; the feeding tee joint 1 comprises a first inlet 12 for pouring slag, a second inlet 13 communicated with the atmosphere and an outlet 11 for outputting the slag; the working bin 2 is internally provided with a lining plate 7, the lining plate 7 sequentially divides the inside of the working bin 2 into a crushing bin 21, an accelerating bin 22 and a feeding bin 23 which are communicated with each other, the crushing bin 21 and the feeding bin 23 are in a cylindrical cavity shape, the accelerating bin 22 in the middle is in a round platform cavity shape, a round platform cavity large-diameter end face 222 of the accelerating bin 22 faces the crushing bin 21, the bottom surface of the cylindrical cavity of the crushing bin 21 is larger than the large-diameter end face 222 of the accelerating bin 22, and a small-diameter end face 223 of the accelerating bin 22 faces the feeding bin 23, wherein the crushing bin 21 is connected with an outlet 11 of a feeding tee joint 1 at one side far away from the feeding bin 23, the top of the feeding bin 23 is provided with a discharging port 231, a discharging pipe 5 is connected above the discharging port 231, the discharging pipe 5 can be L-shaped, and a connecting flange 51 and a silencer; a motor module, which is composed of a motor 4 and a rotating shaft 41, wherein one end of the rotating shaft 41 is arranged on the motor 4 and is driven by the motor 4 to rotate, the other end of the rotating shaft 41 sequentially penetrates through the feeding bin 23, the accelerating bin 22 and the crushing bin 21, the rotating shaft 41 is fixedly connected with at least one first knife rest module 31 in the crushing bin 21, at least one second knife rest module 32 in the accelerating bin 22 and at least one third knife rest module 33 in the feeding bin 23, and each knife rest module (31, 32, 33) is driven by the rotating shaft 41 to rotate; the working bin 2 and the motor 4 are fixed on the base 6, and a plurality of buffer cavities 61 are arranged in the base 6, so that the impact force generated when the motor 4 runs at a high speed can be favorably removed; the base 6 is further provided with two rotating shaft supporting tables 42 which are positioned at the front side and the rear side outside the working bin 2, and the rotating shaft 41 can rotatably penetrate through the two rotating shaft supporting tables 42 to support the rotating shaft 41, so that the rotating shaft 41 is supported to some extent when rotating at a high speed.

As shown in fig. 4, the first tool rest module 31 comprises a tool rest 34 and a plurality of first tools 311, the second tool rest module 32 comprises a tool rest 34 and a plurality of second tools 321, the third tool rest module 33 comprises a tool rest 34 and a plurality of third tools 331, wherein the tool rest 34 comprises a sleeve 36 and a plurality of upright tool seats 37 on the outer wall of the sleeve, the tool rest 34 is sleeved on the rotating shaft 41 through the sleeve 36, and the first tool 311, the second tool 321 and the third tool 331 are quadrangular and are respectively fixed on the corresponding tool seats 37 in a sheet shape.

Preferably, a buffer pad 39 is disposed between each of the first tool 311, the second tool 321, and the third tool 331 and the tool seat 37, and the buffer pad 39 can reduce the impact of the slag on the tools and prolong the service life of the tools.

The quadrangle of the first cutter 311 is inclined towards the outlet 11 of the feeder tee 1, so that the first cutter 311 forms a first inclined edge 313 towards the outer diameter end of the inner cavity wall of the crushing bin 23, and the first inclined edge 313 gradually decreases the distance between the inner cavity wall of the crushing bin 23 and the direction from the outlet 11 of the feeder tee 1 to the accelerating bin 22.

The quadrilateral outer diameter end of the second cutter 321 has a second inclined edge 323, and the second inclined edge 323 gradually decreases the distance between the inner cavity wall of the crushing bin 21 and the direction from the crushing bin 21 to the feeding bin 23.

The quadrangle of the third cutter 331 has a short side 333 and a long side 334 in turn along the radial direction of the rotating shaft 41, so that a third inclined side 335 and a fourth inclined side 336 are arranged between the short side 333 and the long side 334, and the distance between the third inclined side 335 and the fourth inclined side 336 and the inner cavity wall on both sides of the feeding bin 24 is reduced.

The motor 4 drives the rotating shaft 41 to rotate at a high speed, and then drives the third tool holder module 33 located in the feeding bin 23 to rotate at a high speed, because the top of the feeding bin 23 is provided with the discharging port 231, the third tool 331 rotating at a high speed discharges the air in the feeding bin 23 to the discharging port 231, the crushing bin 21 generates a great negative pressure, the slag is very easily sucked from the outlet 11 of the feeding tee 1, the first tool 311 inclines towards the side where the outlet 11 of the feeding tee 1 is installed in the crushing bin 21, at this time, the first bevel edge 313 of the first tool 311 and the cavity wall 211 of the crushing bin 21 form a conical space 212, the bottom surface 213 of the conical space 212 faces the outlet 11 of the feeding tee 1, when the tool holder 34 rotates, the first tool 311 generates a back cyclone in the conical space 212, as shown in fig. 6, the back cyclone can prevent the slag with large particle diameter partially entering the region from entering the accelerating bin 22 from between the first tool 311 and the cavity wall 211, the slag materials with large particle size entering the area are repeatedly collided and extruded with the inner cavity wall of the crushing bin 23 through the first bevel edge 313 of the first cutter, and the slag materials with smaller particle size are absorbed by the accelerating bin 22 by overcoming the cyclone; the residual slag between the first cutters 311 is repeatedly collided and extruded by the oppositely arranged first cutters 311 to form a mixed airflow of the slag with smaller particle size and a large amount of sucked high-speed air, and the mixed airflow is sent to the acceleration bin 22 under the action of negative pressure. (ii) a

Because the accelerating bin 22 is designed to be in the shape of a circular truncated cone cavity, when slag entering from the large-diameter end face 222 is fed into the feeding bin 23 through the small-diameter end face 223, negative pressure is generated due to high-speed rotation of the third tool rest module 33 in the feeding bin 23, and when airflow passes through the accelerating bin 22, the airflow speed is increased due to the change of the section of the circular truncated cone cavity, so that the conveying speed of the slag in the accelerating bin 22 is increased; because the crushing bin 21 and the accelerating bin 22 are communicated with each other, the negative pressure also acts on the crushing bin 21 to assist feeding; the second cutter 321 in the acceleration bin 22 is a right-angled trapezoid cutter, the second oblique side 323 of the right-angled trapezoid of the second cutter 321 faces the cavity wall 221 of the acceleration bin 22, the long side of the right-angled trapezoid faces the crushing bin 21, and when the right-angled trapezoid rotates at a high speed, a cyclone is formed between the second oblique side 323 and the cavity wall 221 of the acceleration bin 22, as shown in fig. 7, a part of slag is flapped and collided by the second cutter 321 and then thrown to the cyclone region, the part of slag is repeatedly bumped and squeezed between the outer diameter end of the second cutter 321 and the inner cavity wall of the acceleration bin 22, the slag with smaller particle size is easily sucked into the feeding bin 23 by overcoming the cyclone, and the slag between the second cutters 321 remains, and the part of slag is repeatedly bumped and squeezed by the second cutters 321, so that the slag with smaller particle size is more easily sucked into the feeding bin 23.

The third tool holder module 33 in the feeding bin 23 has the isosceles trapezoid shaped third tool 331, when the third tool 331 is mounted on the tool holder 34, the long side 334 of the isosceles trapezoid shaped third tool 331 faces the cavity wall 232 of the feeding bin 23, the short side 333 is fixed in the tool holder near the rotating shaft 41, the third inclined side 335 and the fourth inclined side 336 are provided between the short side 333 and the long side 334, the distance between the third inclined side 335 and the fourth inclined side 336 and the inner cavity walls at both sides of the feeding bin 24 is reduced, when the third tool 331 rotates rapidly, as shown in fig. 5, the short side 333 in the middle of the third tool 331 makes it have a redundant space to accelerate the slag in the bin 22 to enter the middle of the feeding bin 23, and simultaneously, when the slag is extruded by collision, it is easy to be ejected from both sides of the short side 333 and collide with the inner cavity walls at both sides of the feeding bin 23 again, similarly, the third inclined side 335 and the fourth inclined side 336 also generate back-wind with the opposite, the slag material with smaller grain diameter is sucked into the discharging hole 231 against the whirlwind; the residual slag between the third cutters 331 is extruded by the third cutters 331 arranged oppositely, and is thrown out to the outer diameter end of the third cutter 331, because the feeding bin 23 only has one discharging port 231, the slag is extruded by repeated collision between the long edge 334 of the third cutter 331 and the inner cavity walls at two sides parallel to the rotating shaft 41, the slag which is further decomposed into smaller grain diameter is sucked into the discharging port 231 until the discharging pipe 5, and the collision extrusion area between the slag and the inner cavity wall of the feeding bin 23 can be further increased by the design of the long edge 334.

The rotating shaft rotating speed is more than 2500r/min, sufficient negative pressure can be formed in the working bin 2 through high-speed rotation of the tool rest module 33 positioned in the feeding bin 23, slag is sucked through the outlet 11 of the feeding tee joint 1, and is repeatedly collided and extruded through the first tool rest module 31 and the second tool rest module 32 in the crushing bin 21 and the accelerating bin 22, and finally is collided and extruded again through the third tool rest module 33 of the feeding bin 23 and is conveyed to the discharge pipe 5.

The third cutter 331 rotates at a high speed, so that the air speed of the discharge hole 231 of the feeding bin 23 is more than or equal to 60m/s, the mixed air flow passes through the muffler 52 through the discharge hole 231 and is sent to the discharge pipe 5, and slag particles in the mixed air flow are subjected to high-speed collision friction in the discharge pipe 5 for further refinement. The sludge and the slag materials are separated into a large amount of free water and bound water in the crushing and colliding processes, so that the internal water is rapidly leaked out and is bound with air again to be taken out, and the effect of drying at normal temperature is realized.

The invention is characterized in that: semi-dry sludge, slag and other slag with high water content are in small blocks, and are crushed in high strength by a special cutter at normal temperature, and simultaneously, a large amount of high-speed air is introduced to form mixed air flow. Slag particles in the mixed gas flow collide at high speed and are further refined to dissociate a large amount of free water and bound water, so that the internal water is rapidly leaked out and is bound with air again to be carried out, the sludge and the organic slag are made into fine powder with the particle size of 50-200 mu m, and the water content is reduced to below 20%.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

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.

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; the specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The above description is only an embodiment of the present invention, and is not intended to limit the design of the present invention, and all equivalent changes made according to the design key of the present invention fall within the protection scope of the present invention.

Claims

1. The utility model provides a mechanical dehydration mummification equipment to moisture content surpasses 40% sediment, its characterized in that: the device comprises a feeding tee joint (1), a working bin (2), a first tool rest module (31), a second tool rest module (32), a third tool rest module (33), a motor module and a discharge pipe (5); the feeding tee joint (1) comprises a first inlet (12) for pouring slag, a second inlet (13) communicated with the atmosphere and an outlet (11) for outputting the slag; the interior of the working bin (2) is sequentially divided into a crushing bin (21), an accelerating bin (22) and a feeding bin (23) which are communicated with each other; the crushing bin (21) is connected with an outlet (11) of the feeding tee joint (1) at one side far away from the feeding bin (23), the accelerating bin (22) forms a cavity with a gradually reduced opening in the direction from the crushing bin (21) to the feeding bin (23), the top of the feeding bin (23) is provided with a discharge hole (231), and a discharge pipe (5) is connected above the discharge hole (231); the motor module comprises a motor (4) and a rotating shaft (41), wherein one end of the rotating shaft (41) is arranged on the motor (4) and is driven by the motor (4) to rotate, the other end of the rotating shaft (41) sequentially penetrates through the feeding bin (23), the accelerating bin (22) and the crushing bin (21), the rotating shaft (41) is at least fixedly connected with a first knife rest module (31) in the crushing bin (21), at least fixedly connected with a second knife rest module (32) in the accelerating bin (22) and at least fixedly connected with a third knife rest module (33) in the feeding bin (23), the first knife rest module (31) comprises a knife rest (34) and a plurality of first cutters (311), the quadrangle of the first cutter (311) inclines towards an outlet (11) of the feeding tee joint (1), so that the first cutter (311) forms a first inclined edge (313) towards the outer diameter end of the inner cavity wall of the crushing bin (23), the distance between the direction of the first inclined edge (313) from the outlet (11) of the feed tee joint (1) to the acceleration bin (22) and the inner cavity wall of the crushing bin (23) is gradually reduced; each knife rest module (31, 32, 33) is driven by a rotating shaft (41) to rotate, negative pressure is formed in the working bin (2) through high-speed rotation of a third knife rest module (33) positioned in the feeding bin (23), slag is sucked through an outlet (11) of the feeding tee joint (1) and passes through the crushing bin (21), the slag is repeatedly collided and extruded once through the first knife rest module (31), and is repeatedly collided and extruded twice through a second knife rest module (32) in the accelerating bin (22), and finally the slag is collided and extruded three times through the third knife rest module (33) of the feeding bin (23) and is conveyed to the discharge pipe (5).

2. The mechanical dewatering and drying equipment for the slag with the water content of more than 40% as claimed in claim 1, wherein: the crushing bin (21) and the feeding bin (23) are in a cylindrical cavity shape, and the middle accelerating bin (22) is in a circular truncated cone cavity shape.

3. The mechanical dewatering and drying equipment for the slag with the water content of more than 40% as claimed in claim 1, wherein: the second tool rest module (32) comprises a tool rest (34) and a plurality of second tools (321), the third tool rest module (33) comprises the tool rest (34) and a plurality of third tools (331), wherein the tool rest (34) comprises a sleeve (36) and a plurality of upright tool holders (37) on the outer wall of the sleeve, the tool rest (34) is sleeved on the rotating shaft (41) through the sleeve (36), and the first tool (311), the second tool (321) and the third tool (331) are quadrangular and are in the shape of a sheet and are fixedly connected to the corresponding tool holders (37) respectively.

4. The mechanical dewatering and drying equipment for the slag with the water content of more than 40% as claimed in claim 3, wherein: the back of each tool apron (37) and the outer wall of the sleeve (36) are connected with a reinforcing block (38), and the reinforcing blocks (38) are perpendicular to the outer wall of the sleeve (36) and the tool apron (37) respectively to form a triangular supporting effect.

5. The mechanical dewatering and drying equipment for the slag with the water content of more than 40% as claimed in claim 3, wherein: a buffer pad (39) is arranged between each of the first cutter (311), the second cutter (321) and the third cutter (331) and the corresponding cutter seat (37).

6. The mechanical dewatering and drying equipment for the slag with the water content of more than 40% as claimed in claim 3, wherein: the quadrilateral outer diameter end of the second cutter (321) is provided with a second inclined edge (323), and the distance between the second inclined edge (323) and the inner cavity wall of the crushing bin (21) is gradually reduced from the crushing bin (21) to the feeding bin (23).

7. The mechanical dewatering and drying equipment for the slag with the water content of more than 40% as claimed in claim 3, wherein: the quadrangle of the third cutter (331) is sequentially provided with a short edge (333) and a long edge (334) along the radial direction of the rotating shaft (41), so that a third bevel edge (335) and a fourth bevel edge (336) are arranged between the short edge (333) and the long edge (334), and the distance between the third bevel edge (335) and the fourth bevel edge (336) and the inner cavity walls on the two sides of the feeding bin (24) is gradually reduced.

8. The mechanical dewatering and drying equipment for the slag with the water content of more than 40% as claimed in claim 1, wherein: a connecting flange (51) and a silencer (52) are arranged between the discharge hole (231) above the feeding bin (23) and the discharge pipe (5).

9. The mechanical dewatering and drying equipment for the slag with the water content of more than 40% as claimed in claim 1, wherein: working bin (2) is equipped with welt (7), and welt (7) divide working bin (2) inside into broken storehouse (21), acceleration bin (22) and pay-off storehouse (23) that link up each other in proper order.

10. The mechanical dewatering and drying equipment for the slag with the water content of more than 40% as claimed in claim 1, wherein: the rotating speed of the rotating shaft is more than 2500r/min, and the air speed of a discharge hole (231) of the feeding bin (23) is more than or equal to 60 m/s.