CN211134148U

CN211134148U - Coal water slurry fine grinding machine

Info

Publication number: CN211134148U
Application number: CN201921776065.XU
Authority: CN
Inventors: 王健; 董宏海
Original assignee: Qingdao Ruike Tiansheng Energy Co ltd
Current assignee: Qingdao Ruike Tiansheng Energy Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-31
Anticipated expiration: 2029-10-22

Abstract

The utility model belongs to the field of powder preparation devices, and discloses a water-coal-slurry fine grinding machine, which comprises a closed grinding machine barrel, wherein the upper end of the barrel is provided with an overflow outlet, the lower part of the barrel is provided with a feed inlet, the barrel is provided with a stirring device, the barrel is divided into an inner layer barrel and an outer layer barrel, the water-coal-slurry fine grinding machine also comprises a single-screw pump feeding device which is connected with the feed inlet and is provided with an extended feeding bucket type, the water-; a rotor is arranged in the stator; the end part of the stator is provided with a discharging body; a feeder is arranged in the suction chamber; the suction chamber is provided with a feeding hopper; a spiral feeder is arranged in the suction chamber; the feeding hopper is arranged above the spiral feeder; the other end of the suction chamber is provided with a bearing seat; the bearing seat is provided with a rotating shaft; the rotor, the feeder, the spiral feeder and the rotating shaft are connected in sequence, so that the problems that some coal water slurry particles are too large, cannot be fed into a coal water slurry grinding machine, need to be ground separately, and then are fed into the grinding machine, procedures are multiple, and efficiency is low can be solved.

Description

Coal water slurry fine grinding machine

Technical Field

The utility model belongs to powder preparation facilities field especially relates to a coal slurry fine grinding machine.

Background

Along with the warming of world climate, the environment protection form is increasingly severe, and as the countries with rich coal resources in China, coal will be used as the main energy source for a long time, and the coal plays a very important role in the fields of power generation, heating and the like, but the coal has a serious pollution problem, so that the coal has urgent requirements on high efficiency and low emission. The coal water slurry is used as coal, the combustion efficiency is high, and the smoke dust and SO are generated₂And the discharge amount of NOX is lower than that of fuel oil and fire coal, so that high efficiency, cleanness and low discharge can be realized, the coal water slurry also becomes the most basic and most economic clean energy for replacing energy sources such as oil, gas and the like, and the new energy source in the form of the coal water slurry plays a very important role in the energy strategy of China. In the preparation process of the coal water slurry, the refining of the coal water slurry has extremely important significance on the quality of the coal water slurry, the higher the refining degree of the coal water slurry is, the higher the combustion efficiency is, and the lower the exhaust emission is.

How to refine to the higher degree of coal slurry, can be simultaneously in refining efficient with low costs, realize product quality and economic benefits's cooperation, be the research and development direction in present stage, application number is 201020239726.8's utility model, a large-scale coal slurry fine grinding machine is disclosed, the utility model provides a coal slurry fine grinding machine, when grinding the coal slurry, the grinding degree of coal slurry is not high, refining up to standard and finished product qualification rate inefficiency of coal slurry, need the secondary grinding, need two or many series connection to grind in the in-service use, intangible has increased manual work, electric power, equipment purchase and maintenance cost, simultaneously in prior art, there are some coal slurry granules too big can't send into the coal slurry grinding machine, need grind alone, then send into the grinding machine again, the procedure is many, inefficiency.

Disclosure of Invention

To there being too big unable coal slurry grinding machine of sending into of some coal slurry granules, need grind alone, then send into again and grind the machine, the procedure is many, the problem of inefficiency, the utility model discloses a coal slurry fine grinding machine specifically as follows:

the utility model provides a coal slurry fine grinding machine, includes a closed mill barrel, the barrel upper end is equipped with the overflow mouth, and the lower part is provided with the feed inlet, the barrel is equipped with agitating unit, agitating unit includes motor, reduction gear, transmission shaft and locates the epaxial agitator of transmission, the barrel divide into inside and outside two-layer barrel, its characterized in that still includes the feed arrangement who links to each other with the feed inlet.

Preferably, the feeding device is a single-screw pump feeding device with an elongated feeding bucket, and comprises a suction chamber, wherein a stator is arranged at one end of the suction chamber; a rotor is arranged in the stator; the end part of the stator is provided with a discharging body; a feeder is arranged in the suction chamber; the suction chamber is provided with a feeding hopper; a spiral feeder is arranged in the suction chamber; the feeding hopper is arranged above the spiral feeder; the other end of the suction chamber is provided with a bearing seat; the bearing seat is provided with a rotating shaft; the rotor, the feeder, the spiral feeder and the rotating shaft are connected in sequence.

As a further preference, the inner cylinder wall is provided with a projection.

Preferably, the protrusions are annular protrusions, all the annular protrusions are arranged in parallel, the distance between adjacent annular protrusions from top to bottom is gradually reduced, and the distance between adjacent annular protrusions from top to bottom is gradually reduced.

More preferably, the protrusions are dot-shaped protrusions, the number of the dot-shaped protrusions increases from top to bottom, and the increase of the number of the dot-shaped protrusions increases gradually.

As a further preference, the stirrer is a spiral reamer fixed on the transmission shaft and supported by the top end of the support rod, the spiral reamer is divided into a left spiral reamer and a right spiral reamer by taking the transmission shaft as the center, the spiral direction of the left spiral reamer is leftward or rightward, the spiral direction of the corresponding right spiral reamer is rightward or leftward, the distance between the outermost end of the spiral reamer and the inner cylinder is the same or the distance between the outermost end of the spiral reamer and the inner cylinder is gradually reduced from top to bottom, the support rod is provided with a scattering shaft block, and when the spiral direction of the left spiral reamer is leftward and the spiral direction of the right spiral reamer is rightward, the number distribution rule of the scattering shaft blocks is that the number is more and less as the distance from the transmission shaft is larger; when the spiral direction of the left spiral reamer is right and the spiral direction of the right spiral reamer is left, the quantity distribution rule of the scattering shaft blocks is that the quantity of the scattering shaft blocks is smaller when the scattering shaft blocks are closer to the transmission shaft, and the quantity of the scattering shaft blocks is larger when the scattering shaft blocks are far away from the transmission shaft.

Preferably, when the spiral direction of the left spiral reamer is leftward and the spiral direction of the right spiral reamer is rightward, the height and the number of the scattering shaft blocks are gradually reduced towards two sides by taking the transmission shaft as a center; when the spiral direction of the left spiral reamer is right and the spiral direction of the right spiral reamer is left, the height and the number of the scattering shaft blocks are gradually reduced towards two sides by taking the transmission shaft as the center, and the distance between the adjacent spiral reamers is gradually reduced from top to bottom.

Preferably, the stirrer is a rod-shaped stirrer or a leaf-shaped stirrer fixed on the transmission shaft, the rod-shaped stirrer or the leaf-shaped stirrer is provided with a protrusion integrally formed with the stirrer or a scattering shaft block fixed on the stirrer, the distance between the outermost end of the rod-shaped stirrer or the leaf-shaped stirrer and the inner cylinder is the same or the distance between the outermost end of the rod-shaped stirrer or the leaf-shaped stirrer and the inner cylinder is gradually reduced from top to bottom, and the adjacent distance between the rod-shaped stirrer or the leaf-shaped stirrer is gradually reduced from top to bottom.

As a further preference, the two rod-shaped stirrers or leaf-shaped stirrers arranged above and below each other are arranged in a non-parallel manner, preferably at an angle of 15-90 ° to each other.

As a further optimization, the two adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers are arranged in a non-parallel manner, and when the number of the two rod-shaped stirrers or leaf-shaped stirrers is less than or equal to 10, the included angle between the two adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers is preferably greater than or equal to 35 degrees and less than or equal to 75 degrees; when the number of the adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers is more than 10, the included angle between the adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers is more than or equal to 10 degrees and less than 35 degrees.

The utility model discloses an above technical scheme has following advantage for prior art:

(1) through the special design of the single-screw pump feeding device with the lengthened feeding bucket, the problems that some coal water slurry particles are too large, cannot be fed into a coal water slurry grinding machine, need to be ground separately, and then are fed into the grinding machine, the processes are multiple, and the efficiency is low can be solved.

(2) Through design arch on the inner cylinder body wall, can increase the grinding to the coal slurry granule, raise the efficiency, can further the targeted grinding to the coal slurry granule distribution characteristic to the incremental design of protruding quantity simultaneously, realize under the same circumstances of equal grinder output, to the promotion of coal slurry grinding efficiency, improved the grinding quality.

(3) Through the design of the left spiral reamer and the right spiral reamer of the spiral reamer stirrer, the control of the rotation direction of particles can be realized, and meanwhile, the change of the height and the arrangement distance of the scattering shaft blocks is combined, so that when the spiral direction of the left spiral reamer is leftward and the spiral direction of the right spiral reamer is rightward, the scattering shaft blocks are densely distributed on the transmission shaft; when left spiral reamer screw direction is right, when right spiral reamer screw direction was left, the granule around the transmission shaft was few, and the bracing piece is more apart from inner tube wall end distribution's the axle piece that breaks up, can realize the pertinence grinding to the granule, improves the efficiency and the quality of grinding.

(4) Due to the sedimentation of the particles under the action of gravity, the distribution density of the coal water slurry below the inner cylinder is high, the number of the stirrers distributed below is large, and the stirrers are increased in an incremental manner through the design of arranging the stirrers in the vertical direction, so that the particles can be ground in an incremental manner.

(5) Through the design to protruding design on the agitator and the design of hammer column structure, can increase the grinding dynamics to the granule.

(6) To bar-shaped agitator or foliation agitator all be simple perpendicular or parallel design in the current design, and the utility model discloses a large amount of experiments, to bar-shaped agitator or the unique design of foliation agitator quantity and angle, improvement that can to a great extent is to the grinding of coal slurry granule, realizes the promotion of grinding quality and efficiency under the same power.

Drawings

FIG. 1 is a schematic structural diagram of a coal water slurry refiner.

FIG. 2 is a partial sectional structure view of the coal water slurry fine grinding machine.

FIG. 3 is a schematic view of a coal water slurry refiner equipped with a feed device.

FIG. 4 is a schematic structural view of a helical reamer agitator and a transmission shaft in the coal water slurry fine grinding machine.

FIG. 5 is a schematic view of a three-dimensional structure of a helical reamer agitator and a transmission shaft in the coal water slurry refiner.

Fig. 6 is a schematic view of the connection of the upper transmission shaft and the lower transmission shaft.

Description of reference numerals: 1. a barrel; 2. an overflow outlet; 3. a feed inlet; 4. an access door; 5. a motor; 6. a speed reducer; 7. a drive shaft; 8. a stirrer; 9, a spiral reamer; 10. breaking up the shaft blocks; 11. a support bar; 12. an upper transmission shaft; 13. a lower transmission shaft; 14. a boss portion; 15. a recess portion; 16. a stator; 17 a rotor; 18. a pull rod; 19. a suction chamber; 20. a universal joint; 21. a feeder; 22. an oil cup; 23. a connecting disc; 24 feeding hoppers; 25. a screw feeder; 26. a rotating shaft; 27 bearing seats; 28. a bottom viewing window.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in fig. 1, 2 and 3, the utility model also discloses a water-coal-slurry grinding machine, which comprises a closed grinding machine barrel 1, wherein the upper end of the barrel 1 is provided with an overflow outlet 2, the lower part of the barrel is provided with a feed inlet 3, the barrel 1 is provided with a stirring device for stirring the water-coal-slurry in the barrel, the barrel is divided into an inner layer of barrel body and an outer layer of barrel body, and the closed grinding machine also comprises a feeding device connected with the feed inlet; the feeding device is preferably a single-screw pump feeding device with an elongated feeding hopper, and comprises a suction chamber 19, wherein a stator 16 is arranged at one end of the suction chamber 19; a rotor 17 is arranged in the stator 16; a feeder 21 is arranged in the suction chamber 19; a feeding hopper 24 is arranged on the suction chamber 19; a screw feeder 25 is arranged in the suction chamber 19; the feeding hopper 24 is arranged above the screw feeder 25; the other end of the suction chamber 19 is provided with a bearing seat 27; the bearing seat 27 is provided with a rotating shaft 26; the rotor 17, the feeder 21, the screw feeder 25 and the rotating shaft 26 are connected in sequence; the stator 16 is connected to the feed opening 3. The universal joints 20 are arranged at two ends of the optimized feeder and are provided with helical blades, so that materials are conveniently conveyed, the optimized suction chamber is provided with the oil cup 22 which is connected with the connecting disc, the lower part of the optimized stator is provided with the pull rod 18, the pull rod 18 is arranged at the front part of the suction chamber 19, and through the special design of the single-screw pump feeding device with the lengthened feeding hopper, the problems that some coal water slurry particles are too large and cannot be fed into a coal water slurry grinding machine, the coal water slurry particles need to be ground separately and then are fed into the grinding machine, the procedures are multiple, and the efficiency is low. The feeding device can be applied to other coal water slurry fine mills, but is not limited to the above.

The mill cylinder is filled with a grinding medium, the grinding medium is preferably low-chromium alloy balls, and the diameter of the grinding medium is preferably 3-12 mm.

The grinding drum of the coal water slurry fine grinding machine is preferably a grinding drum with the maximum diameter ratio of 2: 1-7: 1, as a further preference, the ratio of the height of the mill cylinder to the maximum diameter of the mill cylinder is 4: 1 to 6: 1, the barrel diameter of the upper end of the inner barrel is 1.2 to 1.23 times of the diameter of the lower end barrel, and as further optimization, the diameter ratio of the height of the grinding barrel to the maximum diameter of the grinding barrel is 5.5: 1, the diameter of the upper end cylinder of the inner cylinder is 1.2 times of that of the lower end cylinder.

In order to further improve the grinding efficiency of the equipment to the coal water slurry, a stirring device is improved, as a preferred stirring device, as shown in fig. 4 and 5, the stirring device comprises a motor 5, a speed reducer 6, a transmission shaft 7 and a stirrer 8 arranged on the transmission shaft, the stirrer 8 is a spiral reamer 9 fixed on the transmission shaft and supported by the top end of a support rod 11, the spiral reamer 9 is divided into a left spiral reamer and a right spiral reamer by taking the transmission shaft 7 as the center, when the spiral direction of the left spiral reamer is towards the left, the spiral direction of the corresponding right spiral reamer is towards the right, the coal water slurry is pushed inwards, the coal water slurry is subjected to the centrifugal force and the spiral inward force at the same time, so that the coal water slurry is uniformly dispersed, the refining efficiency of the coal water slurry is improved, and the other way is that when the spiral direction of the left spiral reamer is towards the left, the spiral direction of, the specific gravity of the coal water slurry ground by the spiral reamer and the inner cylinder is increased. The outermost ends of the helical reamers are preferably equidistant from the inner cylindrical wall. In order to further improve the grinding and refining efficiency, the distance from the outermost end of the spiral reamer to the inner cylinder is gradually reduced from top to bottom, and the particle diameter is reduced after the coal water slurry is refined at the upper part. In order to further improve the grinding refinement of the coal water slurry, one or more layers of spiral reamers can be arranged in the spiral reamers, and the rotating direction of the spiral reamers in the inner layer can be opposite to or the same as that of the outer layer. In order to further refine the coal water slurry, a scattering shaft block 10 can be arranged on the supporting rod, the scattering shaft blocks can be uniformly distributed, and can also be arranged according to the rotating direction of the spiral reamer, for example, when the spiral direction of the left spiral reamer is leftward and the spiral direction of the right spiral reamer is rightward, the quantity distribution rule of the scattering shaft blocks is that the quantity is more and less when the scattering shaft blocks are closer to the transmission shaft; when the spiral direction of the left spiral reamer is rightward and the spiral direction of the right spiral reamer is leftward, the quantity distribution rule of the scattered shaft blocks is that the quantity is less as the distance from the transmission shaft is closer, the quantity is more as the distance from the transmission shaft is greater, high-strength refining can be performed on the coal water slurry with high distribution density through the design, the distribution rule of the spiral reamer can be gradual, and the quantity can be increased or reduced to change according to the rule with the increasing amplitude. In order to increase the stirring force to the coal water slurry, the scattering shaft block is of a hammer-shaped structure. The above design of the helical reamer and/or the scattering shaft block can be applied to the cylinder with the same upper and lower diameters or the cylinder with other shapes and structures.

In the stirring and refining process, due to the influence of gravity and particle size, the density of the coal water slurry below the inner cylinder is higher than that of the coal water slurry above the inner cylinder under normal conditions, the preferred spiral reamers are distributed in a mode that the upper part is distributed less and the lower part is distributed more and more gradually, or in a mode that the number of the spiral reamers is increased from top to bottom, so that the stirring and grinding force is gradually enhanced from top to bottom.

The above technical features can be freely combined, and any person can freely combine the above technical features randomly on the basis of the above technical features, and the above spiral stirrer is not limited to be applied to the embodiment, and can also be applied to the grinding machine of other cylinders.

The stirrer can be a rod-shaped stirrer or a leaf-shaped stirrer, the rod-shaped stirrer or the leaf-shaped stirrer is provided with a bulge integrally formed with the stirrer or a scattering shaft block fixed on the stirrer, the bulge can be in a square shape, a trapezoid shape, a triangle shape and other shapes, the bulge can be in a hammer-shaped structure, two ends of the scattering shaft block can also be in the hammer-shaped structure, preferably, the upper rod-shaped stirrer or the leaf-shaped stirrer and the lower rod-shaped stirrer can be arranged in parallel or in non-parallel, and the included angle between the upper rod-shaped stirrer and the lower rod-shaped stirrer or the leaf-shaped stirrer is preferably 15-90 degrees; more preferably, when the number of the two rod-shaped stirrers or the leaf-shaped stirrers is not more than 10, the included angle between the two adjacent upper and lower rod-shaped stirrers or the leaf-shaped stirrers is not less than 35 degrees and not more than 75 degrees; preferably, when the number of the adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers is more than 10, the included angle between the adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers is preferably more than or equal to 10 degrees and less than 35 degrees, and compared with the up-and-down parallel design, the angle arrangement of the rod-shaped stirrers or leaf-shaped stirrers can realize more detailed and more times grinding and stirring on the coal water slurry, the unique design of the number and the angle of the rod-shaped stirrers or leaf-shaped stirrers can greatly improve the grinding of the coal water slurry particles, the improvement of the grinding quality and the grinding efficiency under the same power can be realized, and the grinding efficiency can be improved by about 7-10 percent under the same condition through the design.

The outermost ends of the rod-shaped stirrer or the blade-shaped stirrer are preferably equidistant from the inner cylinder. The above rod-shaped stirrer or the bulge of the blade-shaped stirrer or the broken shaft block is preferably designed to be closer to the transmission shaft, the smaller the number of the rod-shaped stirrer or the blade-shaped stirrer is, and the farther the rod-shaped stirrer or the blade-shaped stirrer is, the more the rod-shaped stirrer is; further preferably, the bulge or the scattering shaft block is changed according to the rule that the quantity of the shaft block is increased more and more as the shaft block is farther from the central shaft, the large-particle-density diameter of the coal water slurry close to the cylinder wall is large due to centrifugal force, the grinding force of the stirrer on the coal water slurry close to the cylinder wall can be increased through the design, and the stirring device can be applied to the cylinder body with the same upper and lower diameter or the cylinder body with other shape structures.

Preferably, the distance between the rod-shaped stirrers or the leaf-shaped stirrers is gradually reduced from top to bottom, and the density of the lower coal-water slurry is higher than that of the upper coal-water slurry due to the sedimentation effect of gravity on the coal slurry, so that the effect of continuously increasing the grinding force of the coal-water slurry from top to bottom can be realized, and the grinding and refining efficiency is improved.

The above technical features can be freely combined, and any embodiment obtained by random free combination of the above technical features on the basis of the above technical features belongs to the content of the present embodiment.

In order to improve the grinding and refining of the coal water slurry, the inner cylinder walls of all the embodiments are provided with bulges, the bulges can be annular bulges or punctiform bulges, and the bulges can be in the shapes of semi-circles, squares, trapezoids, triangles and the like. When the annular protrusions are arranged, the annular protrusions are distributed at equal intervals from top to bottom, preferably, the distance between adjacent annular protrusions distributed from top to bottom is gradually reduced, and further preferably, the gradually reduced amplitude is gradually increased; the annular bulge can be a downward spiral annular bulge, and is preferably in a spiral direction opposite to the rotation direction of the rotating shaft; when the coal water slurry is in the shape of the punctiform projections, the punctiform projections can be uniformly distributed or irregularly distributed, preferably, the number of the punctiform projections distributed from top to bottom is more and more, the density is more and more, preferably, the gradually increased amplitude is gradually increased, the coal water slurry can be better ground by the design of the projections, the targeted grinding can be performed on the lower coal water slurry with high density by the design of the number distance and the change of the amplitude, the grinding efficiency and the quality are improved, and under the same condition, the grinding efficiency can be submitted to 10-15% by the design of the projections. The above screw type stirrer is not limited to be used in a grinder in which the diameter of the upper end cylinder of the inner cylinder is larger than that of the lower end cylinder, but may be used in grinders of other cylinders, such as a cylinder, for example, a cylinder of other shapes such as an equal-edge type.

The stirring device is characterized in that when the length of the transmission shaft is too long, because the vertical stress of the transmission shaft is uneven in the stirring process, the transmission shaft is more prone to causing strain of the transmission shaft, and meanwhile loads are generated on a motor, so that the whole stirring device is affected, the equipment is prone to being frequently damaged, and parts need to be maintained, overhauled and replaced at high frequency; as one of the designs, the ends of the upper and lower transmission shafts are provided with a male shaft portion 14 and a female shaft portion 15 which are engaged with each other, and in order to reduce the loss of parts, the female shaft portion is provided with a bearing engaged with the male shaft portion, the stirrer of the upper and lower stirring devices in this embodiment forms an integral relationship, i.e. the transmission shaft of the upper and lower stirring devices is equivalent to an integral stirring shaft, the stirrer of the stirring device is arranged the same as that of the stirring devices in all the above embodiments, but the stirrer in the above embodiments is disconnected from the transmission shaft to form an upper stirrer and a lower stirrer, the independent operation of the upper stirring device and the lower stirring device can be realized through the arrangement, the lengths of the upper transmission shaft and the lower transmission shaft can be designed according to needs, the preferred ratio of the upper transmission shaft to the lower transmission shaft is 1.5: 1-1: 1, and the ratio of the height of the mill cylinder to the maximum diameter of the mill cylinder is 4: 1-10: 1, when setting up to two agitating unit, the barrel height can be than an agitating unit's height, and the barrel diameter also can increase on an agitating unit's basis, has improved grinding efficiency.

Through the design of the device, the overwork damage to the transmission shaft can be avoided, the burden of a power device of the transmission device is reduced, meanwhile, the power of the motor can be selected according to the requirement, the grinding degree of the coal water slurry on the upper part and the lower part can be adjusted, and the power of the motor on the lower part is preferably larger than that of the motor on the upper part.

In order to facilitate the maintenance of the coal water slurry refiner, an access door 4 is arranged on the refiner, and in order to improve the safety, a safety protection system is arranged on the access door, and comprises a safety P L C and a safety door control switch.

A bottom observation window 28 can be arranged at the bottom of the mill cylinder to observe the condition of the coal water slurry at the bottom.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.

Claims

1. A water-coal-slurry fine mill comprises a closed mill cylinder, wherein an overflow outlet is formed in the upper end of the cylinder, a feed inlet is formed in the lower portion of the cylinder, a stirring device is arranged on the cylinder, the stirring device comprises a motor, a speed reducer, a transmission shaft and a stirrer arranged on the transmission shaft, the cylinder is divided into an inner cylinder and an outer cylinder, and the water-coal-slurry fine mill is characterized by further comprising a feeding device connected with the feed inlet;

the feeding device is a single-screw pump feeding device with a lengthened feeding hopper and comprises a suction chamber, and a stator is arranged at one end of the suction chamber; a rotor is arranged in the stator; the end part of the stator is provided with a discharging body; a feeder is arranged in the suction chamber; the suction chamber is provided with a feeding hopper; a spiral feeder is arranged in the suction chamber; the feeding hopper is arranged above the spiral feeder; the other end of the suction chamber is provided with a bearing seat; the bearing seat is provided with a rotating shaft; the rotor, the feeder, the spiral feeder and the rotating shaft are connected in sequence.

2. A water-coal-slurry refiner as claimed in claim 1, wherein the inner cylindrical wall is provided with projections.

3. The coal-water slurry refiner of claim 2, wherein said projections are annular projections, all of which are arranged in parallel, and the distance between adjacent annular projections decreases gradually from top to bottom, and the distance between adjacent annular projections increases gradually from top to bottom.

4. The coal-water slurry refiner of claim 2, wherein said projections are dot-shaped projections, and the number of dot-shaped projections increases from top to bottom, and the magnitude of the increase of the number of dot-shaped projections increases from top to bottom.

5. The coal water slurry fine grinding machine according to one of claims 1 to 4, wherein the agitator is a helical reamer fixed on a transmission shaft and supported by the top end of a support rod, the helical reamer is divided into a left helical reamer and a right helical reamer with the transmission shaft as the center, the helical direction of the left helical reamer is left or right, the helical direction of the corresponding right helical reamer is right or left, the distance between the outermost end of the helical reamer and the inner cylinder is the same, a scattering shaft block is arranged on the support rod, when the helical direction of the left helical reamer is left and the helical direction of the right helical reamer is right, the distribution rule of the number of the scattering shaft blocks is that the closer the scattering shaft blocks are to the transmission shaft, the farther the scattering shaft blocks are, and the height and the number of the scattering shaft blocks are decreased towards two sides by; when left spiral reamer screw direction is right, when right spiral reamer screw direction was left, the quantity distribution law of breaing up the axle piece is for quantity less near the transmission shaft, keeps away from the transmission shaft quantity more, it uses the transmission shaft to descend to both sides degressively to break up axle piece height and quantity, from the top down interval of adjacent spiral reamer is littleer gradually.

6. The coal-water slurry refiner of any one of claims 1 to 4, wherein the stirrer is a rod-shaped stirrer or a leaf-shaped stirrer fixed on a transmission shaft, the rod-shaped stirrer or the leaf-shaped stirrer is provided with a protrusion formed integrally with the stirrer or a scattering shaft block fixed on the stirrer, the distance between the outermost ends of the rod-shaped stirrer or the leaf-shaped stirrer and the inner cylinder is the same or the distance between the outermost ends of the rod-shaped stirrer or the leaf-shaped stirrer and the inner cylinder is gradually reduced from top to bottom, and the adjacent distances between the rod-shaped stirrer or the leaf-shaped stirrer are gradually reduced from top to bottom.

7. The coal-water slurry fine grinding machine according to claim 6, wherein the adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers are arranged in a non-parallel manner, and the included angle between the adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers is 15-90 degrees.

8. The coal-water slurry fine grinding machine according to claim 7, wherein the two adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers are arranged in a non-parallel manner, and when the number of the two rod-shaped stirrers or leaf-shaped stirrers is less than or equal to 10, the included angle between the two adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers is greater than or equal to 35 degrees and less than or equal to 75 degrees; when the number of the adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers is more than 10, the included angle between the adjacent upper and lower rod-shaped stirrers or leaf-shaped stirrers is more than or equal to 10 degrees and less than 35 degrees.