Disclosure of Invention
In order to improve production efficiency of biomass coal water slurry, the application provides biomass coal water slurry mixing equipment.
The application provides a living beings coal water slurry mixing equipment adopts following technical scheme: the biomass water-coal-slurry mixing equipment comprises a tank body with a feed pipe, a discharge pipe and a impurity discharge pipe, wherein an inner cover and an outer cover which can rotate around the axis of the tank body and have opposite rotation directions are arranged in the tank body, and the inner cover and the outer cover are arranged at intervals inside and outside;
the inner cover and the outer cover jointly divide the inner part of the tank body into a stirring cavity, a grinding cavity and a mixing cavity which are sequentially arranged from inside to outside, the inner cover is provided with a penetrating hole communicated with the stirring cavity and the grinding cavity, and the outer cover is provided with a filtering hole communicated with the grinding cavity and the mixing cavity;
the feeding pipe is communicated with the stirring cavity, the impurity discharging pipe is communicated with the grinding cavity, and the discharging pipe is communicated with the mixing cavity;
the stirring cavity is internally provided with a stirring unit, and the grinding cavity is internally provided with a grinding unit;
the grinding unit is provided with a grinding groove, the inner cover and the outer cover are respectively provided with a grinding seat which is rotationally embedded in the grinding groove, and the grinding seats are provided with grinding surfaces and guide surfaces for guiding material particles to gaps between the grinding surfaces and the grinding groove.
Optionally, the stirring unit comprises a first motor arranged on the tank body, and a stirring paddle extending into the stirring cavity is arranged on an output shaft of the first motor;
the inside of stirring rake is equipped with the helicla flute, and the inlet pipe rotates the upper end notch that communicates in the helicla flute, and the axis of rotation of inlet pipe and stirring rake is the same, and the lower extreme slot mouth of helicla flute runs through in the lateral part of stirring rake and towards the bottom chamber wall in stirring chamber.
Optionally, a fixed cylinder which is obliquely arranged on the vertical surface is arranged in the stirring cavity, a rotating shaft which can rotate around the axis of the fixed cylinder is arranged in the fixed cylinder, and a spiral blade which is rotationally embedded in the fixed cylinder is arranged on the rotating shaft;
one end of the rotating shaft extends out of the fixed cylinder and is fixedly sleeved with a bevel gear together with the stirring paddle, and the two bevel gears are meshed with each other;
the lower extreme of fixed section of thick bamboo is equipped with the feed inlet, wears to establish hole site in the feed inlet department, and the upper end of fixed section of thick bamboo is equipped with the discharge gate.
Optionally, a connecting cylinder rotatably sleeved at the upper end of the stirring paddle is arranged in the stirring cavity, and the stirring paddle is provided with a connecting groove communicated with the spiral groove and the inside of the connecting cylinder;
the fixed section of thick bamboo is equipped with a plurality of around the rotation axis circumference of stirring rake, and the discharge gate of a plurality of fixed section of thick bamboo all communicates in the connecting cylinder is inside.
Optionally, the grinding unit comprises a rotating roller which is vertically arranged and can rotate around the axis of the grinding unit, and the grinding groove is annularly arranged and is arranged on the side wall of the rotating roller;
one end of each of the rotating roller and the stirring paddle is fixedly sleeved with a synchronous wheel, and the synchronous wheel on the rotating roller and the synchronous wheel on the stirring paddle are sleeved with the same synchronous belt.
Optionally, the plurality of grinding grooves are sequentially arranged on the rotating roller from top to bottom, and the plurality of grinding seats are sequentially arranged on the inner cover and the outer cover from top to bottom;
every two upper and lower adjacent guide surfaces are mutually abutted, the guide surface is positioned at one end of the grinding seat, the width of the guide surface gradually decreases from the end of the grinding seat to the grinding surface, and the upper side and the lower side of the guide surface and the upper side and the lower side of the grinding surface are respectively provided with a flange which can extend into the grinding groove.
Optionally, a material leakage groove penetrating through the upper side and the lower side of the grinding seat is formed at the position of one end of the grinding seat, which is contacted with the outer cover, and a material leakage groove penetrating through the upper side and the lower side of the grinding seat is formed at the position of one end of the grinding seat, which is contacted with the inner cover.
Optionally, the outer cover is provided with a scraping plate which can be rotatably abutted against the bottom cavity wall of the grinding cavity and a stirring blade which stretches into the mixing cavity.
Optionally, the inner diameter and the outer diameter of the inner cover are gradually increased from top to bottom, the inner diameter and the outer diameter of the outer cover are gradually decreased from top to bottom, and the inner diameter of the tank body is gradually increased from top to bottom;
the mixing cavity is internally provided with a screw conveyer which is obliquely arranged on the vertical surface, an inlet of the screw conveyer is positioned at the position with the largest inner diameter of the tank body, and an outlet of the screw conveyer is positioned at the position with the smallest inner diameter of the tank body and faces the outer cover.
Optionally, a first gear is fixedly sleeved on the stirring paddle, a second gear is meshed with the first gear, and the second gear is rotatably connected to the tank body;
the inner cover is fixedly embedded with a first gear ring, and the inner side of the first gear ring is meshed with the second gear;
the rotating roller is fixedly sleeved with a third gear, a fourth gear is meshed with the third gear, a fifth gear is meshed with the fourth gear, and the fourth gear and the fifth gear are both rotationally connected with the tank body;
the second gear ring is fixedly sleeved in the outer cover, and the inner side of the second gear ring is meshed with the fifth gear.
In summary, the present application includes the following beneficial technical effects:
in the feeding process of the water-coal-slurry, the water-coal-slurry raw material in the feeding pipe directly enters the spiral groove, and the water-coal-slurry is collided and mixed once in the process of entering the stirring cavity, so that the water-coal-slurry is quickly and uniformly mixed in the stirring cavity; in the process of stirring the water-coal-slurry by rotating the stirring paddles, the stirring paddles drive the rotating shafts to rotate through the two bevel gears, the rotating shafts drive the spiral blades to rotate in the fixed cylinder, and the spiral blades spirally lift the water-coal-slurry at the position of the through holes to the upper part of the stirring cavity, so that the water-coal-slurry can be primarily uniformly mixed in the stirring cavity, and the phenomenon that a large amount of solid particles suddenly enter the grinding cavity to cause blockage is avoided; the water-coal-slurry entering the fixed cylinder is sprayed into the spiral groove through the discharge hole, the inside of the connecting cylinder and the connecting groove, namely, the water-coal-slurry in the stirring cavity moves annularly in the spiral groove, the bottom of the stirring cavity and the fixed cylinder, and the water-coal-slurries at the discharge holes of the plurality of fixed cylinders can be directly sprayed into the same spiral groove and move spirally, so that the mixing efficiency and the mixing effect of the water-coal-slurry are further improved; solid particles in the coal water slurry are close to the inner cover and are lowered and converged to the penetrating holes along the inner wall of the inner cover under the action of centrifugal force, and the fixed cylinder and the spiral blades can be mutually matched so as to lift the part of the solid particles to the upper part of the stirring cavity again, so that the spiral lifting of the solid particles by the fixed cylinder and the spiral blades is facilitated, and the solid particles in the coal water slurry are prevented from being deposited at the bottom of the stirring cavity; the solid particles moving to the guide surface are all moved to the guide surface, the blocking edge is used for preventing the solid particles from separating from the upper side and the lower side of the guide surface, the solid particles are converged towards the middle part of the guide surface and move to the grinding surface, and the blocking edge is used for preventing the solid particles from separating from the upper side and the lower side of the grinding surface so as to improve the grinding effect of the grinding seat and the grinding groove on the solid particles; the solid particles in the coal water slurry rise along the inner wall of the outer cover under the action of centrifugal force, and the solid particles entering the grinding groove are obliquely and downwards thrown out by the rotating roller when being discharged out of the grinding groove, so that the solid particles in the grinding cavity can continuously float up and down, the solid particles are prevented from being deposited at the bottom of the grinding cavity, and the grinding seat is convenient for grinding the solid particles; the solid particles in the mixing cavity descend to the lower part of the mixing cavity along the inner side wall of the tank body under the action of centrifugal force, the spiral conveyor conveys the solid particles accumulated to the lower part of the mixing cavity upwards to the upper part of the mixing cavity in a spiral manner, and the solid particles are sprayed to the outer wall of the outer cover and the stirring blades along with the coal water slurry, so that the coal water slurry can be further crushed and uniformly mixed.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-9.
The embodiment of the application discloses biomass coal water slurry mixing equipment. As shown in fig. 1 and 2, a biomass coal water slurry mixing device comprises a tank body 1 with a feed pipe 11, a discharge pipe 12 and a impurity discharge pipe 13, wherein a plurality of supporting feet are arranged at the bottom of the tank body 1, an inner cover 2 and an outer cover 3 are arranged in the tank body 1, the inner cover 2 and the outer cover 3 are coaxially arranged, and the inner cover 2 and the outer cover 3 are arranged at inner and outer intervals and are rotationally connected to the inner wall of the tank body 1 around the axis of the inner cover.
The inner cover 2 and the outer cover 3 jointly divide the interior of the tank body 1 into a stirring cavity 4, a grinding cavity 5 and a mixing cavity 6 which are sequentially arranged from inside to outside, a plurality of through holes 21 which are communicated with the stirring cavity 4 and the grinding cavity 5 are formed in the inner cover 2, and a plurality of filtering holes 31 which are communicated with the grinding cavity 5 and the mixing cavity 6 are formed in the outer cover 3.
The feeding pipe 11 is communicated with the top of the stirring cavity 4, the impurity discharging pipe 13 is communicated with the bottom of the grinding cavity 5, and the discharging pipe 12 is communicated with the lower part of the mixing cavity 6; the stirring cavity 4 is internally provided with a stirring unit 7, and the grinding cavity 5 is internally provided with a grinding unit 8.
The raw materials of the biomass coal water slurry enter the stirring cavity 4 through the feeding pipe 11 after preliminary mixing, the stirring unit 7 stirs and mixes the raw materials, the preliminary stirred coal water slurry enters the grinding cavity 5 through the penetrating hole 21, the grinding unit 8 grinds the coal water slurry in the grinding cavity 5, the coal water slurry ground to the qualified granularity enters the mixing cavity 6 through the filtering hole 31, and the rest of the coal water slurry is continuously ground by the grinding unit 8.
After the stirring and grinding of the coal water slurry are completed, the coal water slurry is discharged out of the tank body 1 through the discharging pipe 12, and impurities and large particles are discharged out of the tank body 1 through the impurity discharging pipe 13; namely, the mixing, grinding and sieving of the coal water slurry can be synchronously carried out without transferring, thereby improving the production efficiency of the biomass coal water slurry.
It is worth noting that the top of the feeding pipe 11 is provided in a flaring shape, so that the water-coal slurry enters the stirring cavity 4 through the feeding pipe 11.
As shown in fig. 2 to 4, the stirring unit 7 includes a first motor 71 installed on the outer bottom wall of the tank 1, an output shaft of the first motor 71 is coaxially disposed with the tank 1, and a stirring paddle 72 extending into the stirring cavity 4 is coaxially connected to the output shaft of the first motor 71, and the first motor 71 can drive the stirring paddle 72 to rotate to stir the coal water slurry in the stirring cavity 4, so that the coal water slurry is quickly and uniformly mixed.
The inside of stirring rake 72 is equipped with helical groove 73, and inlet pipe 11 rotates the upper end notch that communicates in helical groove 73 through the bearing, and inlet pipe 11 is the same with the rotation axis of stirring rake 72, and helical groove 73's lower extreme slot runs through in stirring rake 72's lateral part and towards the bottom chamber wall of stirring chamber 4.
During the rotation of the stirring paddle 72, the feeding pipe 11 is stationary, and the raw material of the coal water slurry in the feeding pipe 11 directly enters the spiral groove 73; the raw material of the water-coal-slurry is in spiral motion in the spiral groove 73 and generates spiral collision, namely, the water-coal-slurry is collided and mixed once in the process of entering the stirring cavity 4, so that the water-coal-slurry is quickly and uniformly mixed in the stirring cavity 4.
Then the water-coal-slurry after collision and mixing is sprayed onto the bottom cavity wall of the stirring cavity 4 through the lower end slot opening of the spiral slot 73, and the water-coal-slurry sprayed downwards in an inclined way can be collided and mixed with the water-coal-slurry in the stirring cavity 4, so that the mixing effect and the mixing efficiency of the water-coal-slurry are further improved.
The stirring cavity 4 is internally provided with a fixed cylinder 41 which is obliquely arranged on a vertical surface, the fixed cylinder 41 is arranged on the inner wall of the tank body 1, the lower end of the fixed cylinder 41 is provided with a feed inlet 42, the feed inlet 42 is positioned at the penetrating hole 21, and the upper end of the fixed cylinder 41 is provided with a discharge outlet 43.
A rotating shaft 44 which can rotate around the axis of the fixed cylinder 41 is rotationally connected with the fixed cylinder 41, and a spiral blade 45 which is rotationally embedded in the fixed cylinder 41 is arranged on the rotating shaft 44; one end of the rotating shaft 44 extends out of the fixed cylinder 41 and is fixedly sleeved with a bevel gear together with the stirring paddle 72, and the two bevel gears are meshed with each other.
In the rotation process of the stirring paddle 72, the stirring paddle 72 drives the rotating shaft 44 to rotate through the two bevel gears, the rotating shaft 44 drives the spiral blade 45 to rotate in the fixed cylinder 41, the spiral blade 45 spirally lifts the coal water slurry at the through hole 21 to the upper part of the stirring cavity 4, so that solid particles in the coal water slurry can not enter the grinding cavity 5 through the through hole 21 rapidly, the movement time of the solid particles in the coal water slurry in the stirring cavity 4 is prolonged, the coal water slurry can be primarily mixed in the stirring cavity 4, and the phenomenon that the grinding cavity 5 suddenly enters a large amount of solid particles to be blocked is avoided.
The stirring chamber 4 is internally provided with a connecting cylinder 47 which is rotationally sleeved at the upper end of the stirring paddle 72, the connecting cylinder 47 is fixed on the inner wall of the tank body 1, and the stirring paddle 72 is provided with a connecting groove 46 which is communicated with the inside of the spiral groove 73 and the connecting cylinder 47. The coal water slurry entering the fixed cylinder 41 is sprayed into the spiral groove 73 through the discharge hole 43, the inside of the connecting cylinder 47 and the connecting groove 46; namely, the water-coal-slurry in the stirring cavity 4 moves circularly in the spiral groove 73, the bottom of the stirring cavity 4 and the fixed cylinder 41, thereby improving the stirring effect and stirring efficiency of the water-coal-slurry.
The fixed cylinder 41 is provided with a plurality of discharge holes 43 of the fixed cylinders 41 which are communicated with the inside of the connecting cylinder 47 around the rotation axis of the stirring paddle 72, so that the coal water slurries with different injection directions collide with each other and do spiral motion in the spiral groove 73 together, thereby further improving the mixing efficiency and the mixing effect of the coal water slurries.
The inner diameter and the outer diameter of the inner cover 2 are gradually increased from top to bottom, in the process of stirring the water-coal-slurry by rotating the stirring paddle 72, solid particles in the water-coal-slurry are close to the inner cover 2 and fall along the inner wall of the inner cover 2 to be converged at the penetrating hole 21 under the action of centrifugal force, and the fixed cylinder 41 and the spiral blade 45 can be matched with each other so as to lift the solid particles to the upper part of the stirring cavity 4 again, so that the spiral lifting of the solid particles by the fixed cylinder 41 and the spiral blade 45 is facilitated, and the solid particles in the water-coal-slurry are prevented from being deposited at the bottom of the stirring cavity 4.
The upper end of the stirring paddle 72 is fixedly sleeved with a first gear 22, a second gear 23 is meshed with the first gear 22, and the second gear 23 is rotationally connected with the tank body 1 around the axis of the second gear 23; the inner cover 2 is fixedly embedded with a first gear ring 24, and the inner side of the first gear ring 24 is meshed with a second gear 23.
In the rotation process of the stirring paddle 72, the stirring paddle 72 drives the second gear 23 to rotate reversely through the first gear 22, the second gear 23 drives the first gear ring 24 to rotate in the same direction, and the first gear ring 24 drives the inner cover 2 to rotationally grind solid particles in the grinding cavity 5 and the stirring cavity 4 so as to improve the grinding efficiency of the coal water slurry.
It should be noted that, the rotation directions of the stirring paddles 72 and the inner cover 2 are opposite, and the vortex generated by the stirring paddles 72 in the rotation process collides with the vortex generated by the inner cover 2 in the rotation process, so that a mixed flow is formed, and the mixing effect of the coal water slurry is improved.
As shown in fig. 5, the grinding unit 8 comprises a rotating roller 81 which is vertically arranged and is rotatably connected to the inner wall of the tank body 1 around the axis thereof, and an annular grinding groove 82 is arranged on the side wall of the rotating roller 81; the outer wall of the inner cover 2 and the inner wall of the outer cover 3 are respectively provided with a grinding seat 83 which is rotationally embedded in the grinding groove 82, and the grinding seat 83 is provided with a grinding surface 85 which is arranged in an arc shape and a guiding surface 84 which is arranged in an inclined manner.
During the rotation of the inner cover 2 and the outer cover 3, the water-coal slurry in the grinding cavity 5 is driven to rotate, solid particles in the water-coal slurry move to a gap between the grinding surface 85 and the grinding groove 82 through the guiding of the guiding surface 84, and the inner cover 2 and the outer cover 3 drive the grinding seat 83 to rotate so as to grind the solid particles between the grinding surface 85 and the grinding groove 82; the solid particles ground to the qualified granularity can timely enter the mixing cavity 6 through the filtering holes 31, and the rest solid particles are still in the grinding cavity 5, so that the ground solid particles can be timely separated, and the inside of the grinding cavity 5 is prevented from being blocked.
It should be noted that, the grinding units 8 are circumferentially provided with a plurality of groups around the axis of the tank body 1, the grinding grooves 82 are sequentially provided with a plurality of grinding seats 83 from top to bottom on the rotating roller 81, and the inner cover 2 and the outer cover 3 are sequentially provided with a plurality of grinding seats 83 from top to bottom, so as to improve the grinding efficiency and the grinding effect on the coal water slurry.
As shown in fig. 6, the lower ends of the rotating roller 81 and the stirring paddle 72 extend out of the tank 1 and are fixedly sleeved with a synchronizing wheel 87, and the synchronizing wheel 87 on the rotating roller 81 and the synchronizing wheel 87 on the stirring paddle 72 are sleeved with the same synchronizing belt 88. During the rotation of the stirring paddle 72, the stirring paddle 72 drives all the rotating rollers 81 to rotate through the synchronizing wheel 87 and the synchronizing belt 88, so that all the grinding units 8 grind the coal water slurry synchronously.
As shown in fig. 7 to 9, each two guide surfaces 84 adjacent to each other vertically are abutted against each other, the guide surface 84 is located at one end of the grinding base 83, the width of the guide surface 84 gradually decreases from the end of the grinding base 83 toward the grinding surface 85, and the upper and lower sides of the guide surface 84 and the grinding surface 85 are integrally formed with a rib 86 which is capable of extending into the grinding groove 82.
The solid particles moving to the guide surface 84 will all move to the guide surface 84, the blocking edge 86 will avoid the solid particles from separating from the upper and lower sides of the guide surface 84, the solid particles will converge toward the middle of the guide surface 84 and move to the grinding surface 85, and the blocking edge 86 will avoid the solid particles from separating from the upper and lower sides of the grinding surface 85, so as to improve the grinding effect of the grinding seat 83 and the grinding groove 82 on the solid particles.
The end that grinds seat 83 and dustcoat 3 contacted is equipped with and runs through in the material groove 89 that leaks of grinding seat 83 upper and lower both sides, and the end that grinds seat 83 and inner cover 2 contacted is equipped with and runs through in the material groove 89 that leaks of grinding seat 83 upper and lower both sides, so because of centrifugal force and move the solid particle accessible material groove 89 down on dustcoat 3 inner wall and the inner cover 2 outer wall to avoid solid particle to pile up on grinding seat 83, in order to guarantee that all solid particles in grinding chamber 5 can all be ground.
As shown in fig. 7, the inner diameter and the outer diameter of the outer cover 3 are gradually reduced from top to bottom, and the notch of the grinding groove 82 is inclined downward, so that the solid particles in the water-coal slurry will rise along the inner wall of the outer cover 3 under the action of centrifugal force, and the solid particles entering the grinding groove 82 will be thrown out by the rotating roller 81 when being discharged from the grinding groove 82, so that the solid particles in the grinding cavity 5 can continuously float up and down, the solid particles are prevented from being deposited at the bottom of the grinding cavity 5, and the grinding seat 83 is convenient for grinding the solid particles.
As shown in fig. 5, a third gear 32 is fixedly sleeved at the upper end of the rotating roller 81, a fourth gear 33 is meshed with the third gear 32, a fifth gear 34 is meshed with the fourth gear 33, and the fourth gear 33 and the fifth gear 34 are both connected with the tank 1 in a rotating way around the axis of the tank; the second gear ring 35 is fixedly sleeved in the outer cover 3, and the inner side of the second gear ring 35 is meshed with the fifth gear 34.
In the rotation process of the rotating roller 81, the rotating roller 81 drives the fifth gear 34 to rotate in the same direction through the third gear 32 and the fourth gear 33, the fifth gear 34 drives the second gear ring 35 to rotate in the same direction, and the second gear ring 35 drives the outer cover 3 to rotationally grind the solid particles in the grinding cavity 5 and the mixing cavity 6, so that the grinding efficiency and the grinding effect of the coal water slurry are improved.
It should be noted that, the rotation directions of the outer cover 3 and the inner cover 2 are opposite, and the vortex generated by the outer cover 3 in the rotation process collides with the vortex generated by the inner cover 2 in the rotation process, so that a mixed flow is formed, and the mixing effect of the coal water slurry is improved.
As shown in fig. 7, the scraping plate 36 is mounted on the inner wall of the outer cover 3, and during the rotation of the outer cover 3, the scraping plate 36 will rotate to abut against the bottom cavity wall of the grinding cavity 5, so that the solid particles settled at the bottom of the grinding cavity 5 can float upwards in a re-inclined manner along the inner wall of the outer cover 3, so that the grinding seat 83 grinds the solid particles in the grinding cavity 5 in all directions.
It should be noted that, during the discharging process of the water-coal slurry, the rotating scraper 36 may scrape the impurities and large particles deposited in the grinding chamber 5 into the impurity discharging pipe 13, so as to discharge the impurities and the large particles.
As shown in fig. 2, a plurality of stirring blades 37 extending into the mixing cavity 6 are installed on the outer wall of the outer cover 3, and in the rotating process of the outer cover 3, the outer cover 3 rotates to stir the coal water slurry in the mixing cavity 6 through the stirring blades 37, so that the coal water slurry can be further mixed in the mixing cavity 6.
The internal diameter of jar body 1 increases gradually from top to bottom, is equipped with the screw conveyer 61 that is the slope setting on vertical face in the blending chamber 6, and screw conveyer 61 installs on the inner wall of jar body 1, and the entry of screw conveyer 61 is located the biggest department of internal diameter of jar body 1, and the export of screw conveyer 61 is located the biggest department of internal diameter of jar body 1 and towards dustcoat 3.
The solid particles in the mixing cavity 6 will descend to the lower part of the mixing cavity 6 along the inner side wall of the tank body 1 under the action of centrifugal force, the screw conveyor 61 will pile up the solid particles in the lower part of the mixing cavity 6 to the upper part of the mixing cavity 6, and this part of solid particles will be sprayed to the outer wall of the housing 3 and the stirring vane 37 along with the coal water slurry, so that this part of the coal water slurry can be further crushed and mixed.
The implementation principle of the biomass coal water slurry mixing equipment provided by the embodiment of the application is as follows: in the production process of the water-coal-slurry, raw materials of the biomass water-coal-slurry enter the spiral groove 73 through the feeding pipe 11 in preliminary mixing, the water-coal-slurry is subjected to spiral collision and uniform mixing in the spiral groove 73, then the water-coal-slurry is sprayed onto the bottom cavity wall of the stirring cavity 4 through the lower end slot opening of the spiral groove 73, the water-coal-slurry sprayed downwards obliquely collides with the water-coal-slurry in the stirring cavity 4 and is mixed, and solid particles in the water-coal-slurry are lowered and converged to the penetrating hole 21 along the inner wall of the inner cover 2 under the action of centrifugal force.
The stirring paddle 72 drives the rotating shaft 44 to rotate through the two bevel gears in the rotating process, the rotating shaft 44 drives the spiral blade 45 to rotate in the fixed cylinder 41, the spiral blade 45 spirally lifts and mixes the coal water slurry penetrating through the hole 21, then the coal water slurry in the fixed cylinder 41 is sprayed into the spiral groove 73 through the discharging hole 43, the inside of the connecting cylinder 47 and the connecting groove 46, and the coal water slurries with different spraying directions collide with each other and do spiral motion in the spiral groove 73 together, so that the coal water slurries can be mixed uniformly quickly.
The mixed part of the water-coal-slurry enters the grinding cavity 5 through the penetrating hole 21, the stirring paddle 72 reversely rotates through the first gear 22, the second gear 23 and the first gear ring 24, the stirring paddle 72 drives the rotating roller 81 to rotate in the same direction through the synchronous belt 88 and the synchronous belt 88, and the stirring paddle 72 drives the outer cover 3 to rotate in the same direction through the third gear 32, the fourth gear 33, the fifth gear 34 and the second gear ring 35.
The guide surface 84 will move the solid particles in the grinding chamber 5 onto the grinding surface 85, the grinding chamber 5 cooperating with the grinding groove 82 such that the solid particles are ground; the solid particles in the grinding chamber 5 will rise along the inner wall of the housing 3 under the action of centrifugal force, and the solid particles entering the grinding groove 82 will be thrown out by the rotating roller 81 obliquely and downwards when being discharged out of the grinding groove 82, so that the solid particles in the grinding chamber 5 can continuously float up and down.
The solid particles ground to the qualified granularity enter the mixing cavity 6 through the filtering holes 31, the outer cover 3 rotates through the stirring blades 37 in the rotating process to stir the coal water slurry in the mixing cavity 6, the solid particles in the mixing cavity 6 descend to the lower part of the mixing cavity 6 along the inner side wall of the tank body 1 under the action of centrifugal force, the spiral conveyor 61 spirally conveys the solid particles accumulated to the lower part of the mixing cavity 6 upwards to the upper part of the mixing cavity 6, and the part of the solid particles are sprayed onto the outer wall of the outer cover 3 and the stirring blades 37 along with the coal water slurry, so that the part of the coal water slurry can be further crushed and uniformly mixed.
When the stirring and grinding of the coal water slurry are completed, the coal water slurry is discharged out of the tank body 1 through the discharging pipe 12, and impurities and large particles are discharged out of the tank body 1 through the impurity discharging pipe 13.
In summary, the method and the device can synchronously carry out multiple uniform mixing, multiple grinding and screening of the coal water slurry, and transfer of the coal water slurry is not needed, so that the production efficiency and the production quality of the biomass coal water slurry are improved.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.