CN117244447B - A kind of biomass coal-water slurry mixing equipment - Google Patents

Abstract

The present application relates to the technical field of coal-water slurry mixing, and in particular to a biomass coal-water slurry mixing equipment, which includes a tank with a feed pipe, a discharge pipe and an impurity discharge pipe. The inner cover and the outer cover rotate on their own axis and in opposite directions of rotation. The inner cover and the outer cover are arranged at intervals between the inside and the outside. The inner cover and the outer cover jointly divide the inside of the tank into a stirring chamber, a grinding chamber and a mixing chamber that are arranged in sequence from the inside to the outside. The inner cover is provided with a penetration hole connected to the mixing chamber and the grinding chamber, and the outer cover is provided with a filter hole connected to the grinding chamber and the mixing chamber; the feed pipe is connected to the mixing cavity, and the impurity discharge pipe is connected to the grinding cavity. The material pipe is connected to the mixing chamber; the mixing chamber is equipped with a stirring unit, and the grinding chamber is equipped with a grinding unit; the grinding unit is provided with a grinding tank, and both the inner and outer covers are equipped with grinding seats that are rotated and embedded in the grinding tank. , the grinding seat is equipped with a grinding surface and a guide surface. This application can improve the production efficiency of biomass coal-water slurry.

Description

A kind of biomass coal-water slurry mixing equipment

Technical field

The present application relates to the technical field of coal-water slurry mixing, and in particular to a biomass coal-water slurry mixing equipment.

Background technique

Biomass coal-water slurry has environmental advantages. Compared with traditional fuels, biomass can reduce pollution to the atmospheric environment. The total amount of carbon dioxide produced by its combustion is equivalent to the amount of biomass absorbed and will not have a negative impact on the atmospheric environment. At the same time, compared with traditional fuel power generation methods, biomass coal-water slurry significantly reduces the emissions of harmful gases such as sulfur and nitrogen.

Through the search, Chinese Patent Publication No. CN101747963A discloses a biomass coal-water slurry and its preparation method. The components and weight percentages of the biomass coal-water slurry are as follows: biomass carbon 15% to 70%; coal 5% to 55% %; water 24% to 30%; additives 0.5% to 3%. The preparation method includes the following steps: 1. Mix and crush biomass charcoal and coal in proportion to particles less than 1 cm, and stir evenly; 2. Stir the particles in step 1 with water and additives in proportion, and grind for 1.5-3 hours. ; 3. Filter with a 200-400 mesh sieve to remove coarse particles and impurities. 4. Pump into a storage tank. The coal concentration of biomass coal-water slurry is much lower, carbon dioxide and sulfur dioxide gas emissions can be reduced by half to 90%, and it has low cost, high output, and can be produced in large quantities.

Regarding the above-mentioned related technologies, the inventor found that there are the following defects: the biomass coal-water slurry needs to be stirred and mixed in a mixer first, then ground in a grinder, and then impurities and large particles are separated in a screening machine, and finally Pump it into a storage tank for storage; that is, the biomass coal-water slurry needs to be transported multiple times to complete each process, and each process is relatively independent and needs to be completed in sequence, making the production of biomass coal-water slurry more time-consuming, so it needs to be improved. .

Contents of the invention

In order to improve the production efficiency of biomass coal-water slurry, this application provides a biomass coal-water slurry mixing equipment.

The biomass coal-water slurry mixing equipment provided by this application adopts the following technical solution: a biomass coal-water slurry mixing equipment includes a tank with a feed pipe, a discharge pipe and an impurity discharge pipe. The body is equipped with an inner cover and an outer cover that can rotate around its own axis and rotate in opposite directions. The inner cover and the outer cover are spaced apart from each other;

The inner cover and the outer cover jointly divide the inside of the tank into a mixing chamber, a grinding chamber and a mixing chamber arranged in sequence from the inside to the outside. The inner cover is provided with a through hole connected to the mixing chamber and the grinding chamber, and the outer cover is provided with a connecting hole. Filter holes in the grinding chamber and mixing chamber;

The feed pipe is connected to the mixing chamber, the impurity discharge pipe is connected to the grinding chamber, and the discharge pipe is connected to the mixing chamber;

There is a stirring unit in the stirring chamber, and a grinding unit in the grinding chamber;

The grinding unit is equipped with a grinding groove, and the inner cover and the outer cover are equipped with a grinding seat that is rotated and embedded in the grinding groove. The grinding seat is provided with a grinding surface and is used to guide the material particles to the gap between the grinding surface and the grinding groove. guide surface.

Optionally, the stirring unit includes a first motor provided on the tank, and the output shaft of the first motor is provided with a stirring paddle extending into the stirring chamber;

There is a spiral groove inside the stirring paddle. The feed tube is connected to the upper notch of the spiral groove. The feeding tube and the stirring paddle have the same rotation axis. The lower notch of the spiral groove runs through the side of the stirring paddle and faces the mixing chamber. the bottom cavity wall.

Optionally, the stirring chamber is provided with a fixed cylinder that is inclined on the vertical surface. The fixed cylinder is provided with a rotating shaft that can rotate around the axis of the fixed cylinder. The rotating shaft is provided with a spiral that is rotated and embedded in the fixed cylinder. leaf;

One end of the rotating shaft extends out of the fixed cylinder and is fixed with a bevel gear on both the stirring paddle and the two bevel gears mesh with each other;

The lower end of the fixed cylinder is provided with a feed port, the penetration hole is located at the feed port, and the upper end of the fixed cylinder is provided with a discharge port.

Optionally, the stirring chamber is provided with a connecting barrel that is rotated and sleeved on the upper end of the stirring paddle, and the stirring paddle is provided with a connecting groove that connects the spiral groove and the inside of the connecting barrel;

There are multiple fixed cylinders circumferentially around the rotation axis of the stirring paddle, and the discharge ports of the multiple fixed cylinders are all connected to the inside of the connecting cylinder.

Optionally, the grinding unit includes a rotating roller that is arranged vertically and can rotate around its own axis, and the grinding groove is arranged in an annular shape and is provided on the side wall of the rotating roller;

One end of the rotating roller and the stirring paddle is fixed with a synchronous wheel, and the synchronous wheel on the rotating roller and the synchronous wheel on the stirring paddle are covered with the same synchronous belt.

Optionally, a plurality of grinding grooves are provided in sequence from top to bottom on the rotating roller, and a plurality of grinding seats are provided in sequence from top to bottom on the inner cover and the outer cover;

Every two adjacent guide surfaces conflict with each other. The guide surface is located 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. Both the upper and lower sides of the guide surface and the grinding surface are provided with There are ribs that extend into the grinding tank.

Optionally, one end of the grinding seat that is in contact with the outer cover is provided with a leakage groove that runs through the upper and lower sides of the grinding seat, and one end of the grinding seat that is in contact with the inner cover is provided with a leakage that runs through the upper and lower sides of the grinding seat. trough.

Optionally, the outer cover is provided with a scraper that can rotate against the bottom wall of the grinding chamber and a stirring blade that extends into the mixing chamber.

Optionally, the inner diameter and outer diameter of the inner cover gradually increase from top to bottom, the inner diameter and outer diameter of the outer cover gradually decrease from top to bottom, and the inner diameter of the tank gradually increases from top to bottom;

The mixing chamber is equipped with a screw conveyor arranged at an angle on the vertical plane. The inlet of the screw conveyor is located at the largest inner diameter of the tank, and the outlet of the screw conveyor is located at the smallest inner diameter of the tank and faces the outer cover.

Optionally, a first gear is fixedly mounted on the stirring paddle, a second gear is engaged with the first gear, and the second gear is rotatably connected to the tank;

A first ring gear is fixedly embedded in the inner cover, and the inner side of the first ring gear meshes with the second gear;

The fixed sleeve of the rotating roller is provided with a third gear, the third gear is meshed with a fourth gear, and the fourth gear is meshed with a fifth gear. Both the fourth gear and the fifth gear are rotationally connected to the tank body;

The inner fixed sleeve of the outer cover is provided with a second ring gear, and the inner side of the second ring gear is meshed with the fifth gear.

To sum up, this application includes the following beneficial technical effects:

During the feeding process of coal-water slurry, the coal-water slurry raw materials in the feed pipe will directly enter the spiral groove. The coal-water slurry has completed a collision and mixing during the process of entering the mixing chamber, so that the coal-water slurry can be mixed in the mixing chamber. Mix quickly inside; during the process of mixing the coal-water slurry by rotating the stirring paddle, the stirring paddle will drive the rotating shaft to rotate through the two bevel gears, and the rotating shaft will drive the spiral blade to rotate in the fixed cylinder, and the spiral blade will push the through hole. The coal-water slurry is spirally lifted to the upper part of the mixing chamber, which not only allows the coal-water slurry to be initially mixed in the mixing chamber, but also avoids blockage caused by the sudden entry of a large number of solid particles into the grinding chamber; the coal-water slurry entering the fixed cylinder will pass through the outlet The material port, the inside of the connecting cylinder and the connecting groove are sprayed into the spiral groove, that is, the coal-water slurry in the mixing chamber will make a circular motion in the spiral groove, the bottom of the mixing chamber and the fixed cylinder, and the water at the outlet of multiple fixed cylinders will The coal slurry can be directly sprayed into the same spiral groove and perform spiral motion, thereby further improving the mixing efficiency and mixing effect of the coal water slurry; the solid particles in the coal water slurry will be close to the inner cover under the action of centrifugal force and Descend along the inner wall of the inner cover and converge to the perforation hole. The fixed cylinder and the spiral blades can cooperate with each other to lift this part of the solid particles to the upper part of the mixing chamber, thus facilitating the spiral lifting of the solid particles by the fixed cylinder and the spiral blades. It avoids the solid particles in the coal-water slurry from being deposited at the bottom of the mixing chamber; the solid particles that move to the guide surface will all move to the guide surface, and the ribs will prevent the solid particles from detaching from the upper and lower sides of the guide surface, and the solid particles will move to the guide surface. The middle part of the grinding machine converges and moves to the grinding surface. The ribs will prevent the solid particles from detaching from the upper and lower sides of the grinding surface 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 will be removed by the centrifugal force under the action of centrifugal force. Rising along the inner wall of the outer cover, the solid particles entering the grinding tank will be thrown downward by the rotating roller when they are discharged from the grinding tank, so that the solid particles in the grinding chamber can continuously float up and down to avoid solid particles being deposited in the grinding chamber. The bottom is convenient for the grinding seat to grind solid particles; the solid particles in the mixing chamber will drop to the lower part of the mixing chamber along the inner wall of the tank under the action of centrifugal force, and the screw conveyor will accumulate to the lower part of the mixing chamber. The solid particles are spirally transported upward to the upper part of the mixing chamber, and this part of the solid particles will be sprayed onto the outer wall of the outer cover and the stirring blades along with the coal-water slurry, so that this part of the coal-water slurry can be further broken and mixed.

Description of drawings

Figure 1 is a schematic diagram of the overall structure in the embodiment of the present application;

Figure 2 is a schematic cross-sectional structural diagram of the entire embodiment of the present application;

Figure 3 is a schematic structural diagram of the inner cover and stirring unit in the embodiment of the present application;

Figure 4 is a schematic structural diagram of the interior of the stirring chamber in the embodiment of the present application;

Figure 5 is a schematic structural diagram of the interior of the grinding chamber in the embodiment of the present application;

Figure 6 is a schematic structural diagram of the bottom of the stirring chamber and grinding chamber in the embodiment of the present application;

Figure 7 is a schematic cross-sectional structural diagram of the inner cover and the outer cover in the embodiment of the present application;

Figure 8 is a partially enlarged schematic diagram of position A in Figure 7;

Figure 9 is a schematic structural diagram of the grinding unit in the embodiment of the present application.

Reference signs: 1. Tank; 11. Feed pipe; 12. Discharge pipe; 13. Discharge pipe; 2. Inner cover; 21. Perforation hole; 22. First gear; 23. Second gear; 24. First ring gear; 3. Outer cover; 31. Filter hole; 32. Third gear; 33. Fourth gear; 34. Fifth gear; 35. Second ring gear; 36. Scraper; 37. Mixing blade ; 4. Mixing chamber; 41. Fixed cylinder; 42. Feed port; 43. Discharge port; 44. Rotating shaft; 45. Spiral blade; 46. Connecting groove; 47. Connecting cylinder; 5. Grinding chamber; 6. Mixing Uniform chamber; 61. Screw conveyor; 7. Mixing unit; 71. First motor; 72. Stirring paddle; 73. Spiral groove; 8. Grinding unit; 81. Rotating roller; 82. Grinding tank; 83. Grinding base; 84. Guide surface; 85. Grinding surface; 86. Rib; 87. Synchronous wheel; 88. Synchronous belt; 89. Leakage chute.

Detailed ways

The present application will be further described in detail below in conjunction with Figures 1-9.

The embodiment of the present application discloses a biomass coal-water slurry mixing equipment. As shown in Figures 1 and 2, a biomass coal-water slurry mixing equipment includes a tank 1 with a feed pipe 11, a discharge pipe 12 and an impurity discharge pipe 13. The bottom of the tank 1 is equipped with multiple Supporting feet, the tank body 1 is provided with an inner cover 2 and an outer cover 3. The tank body 1, the inner cover 2 and the outer cover 3 are arranged coaxially. The inner cover 2 and the outer cover 3 are arranged at intervals inside and outside and are connected to the tank by rotating around their own axis. The inner wall of body 1.

The inner cover 2 and the outer cover 3 jointly divide the inside of the tank 1 into a stirring chamber 4, a grinding chamber 5 and a mixing chamber 6 arranged sequentially from the inside to the outside. The inner cover 2 is provided with a plurality of stirring chambers 4 and grinding chambers 5. Through holes 21, the outer cover 3 is provided with a number of filter holes 31 connected to the grinding chamber 5 and the mixing chamber 6.

The feed pipe 11 is connected to the top of the mixing chamber 4, the impurity discharge pipe 13 is connected to the bottom of the grinding chamber 5, and the discharge pipe 12 is connected to the lower part of the mixing chamber 6; the mixing unit 7 is provided in the mixing chamber 4, and the grinding chamber 5 There is a grinding unit 8 inside.

After preliminary mixing, the raw materials of the biomass coal-water slurry will enter the mixing chamber 4 through the feed pipe 11. The stirring unit 7 will stir and mix the raw materials. The initially mixed coal-water slurry will enter the grinding chamber through the perforation hole 21. In the chamber 5, the grinding unit 8 will grind the coal-water slurry in the grinding chamber 5. The coal-water slurry ground to a qualified particle size will pass through the filter hole 31 and enter the mixing chamber 6, while the remaining coal-water slurry will continue to be Grinding unit 8 grinds.

When the mixing and grinding of the coal-water slurry is completed, the coal-water slurry will be discharged out of the tank 1 through the discharge pipe 12, and the impurities and large particles will be discharged out of the tank 1 through the discharge pipe 13; that is, the mixing of the coal-water slurry Homogenization, grinding and screening can be carried out simultaneously without the need for transportation, thereby improving the production efficiency of biomass coal-water slurry.

It is worth mentioning that the top of the feed pipe 11 is arranged in a flared shape so that the coal water slurry enters the stirring chamber 4 through the feed pipe 11 .

As shown in Figures 2 to 4, the stirring unit 7 includes a first motor 71 installed on the outer bottom wall of the tank 1. The output shaft of the first motor 71 is coaxially arranged with the tank 1, and the first motor 71 The output shaft is coaxially connected with a stirring paddle 72 extending into the stirring chamber 4. The first motor 71 can drive the stirring paddle 72 to rotate and stir the coal-water slurry in the stirring chamber 4, so that the coal-water slurry is quickly mixed.

The inside of the stirring paddle 72 is provided with a spiral groove 73. The feed pipe 11 is connected to the upper notch of the spiral groove 73 through bearing rotation. The feeding pipe 11 and the stirring paddle 72 have the same rotation axis. The lower end notch of the spiral groove 73 runs through The side of the stirring paddle 72 faces the bottom wall of the stirring chamber 4 .

During the rotation of the stirring paddle 72, the feed pipe 11 will remain stationary, and the coal-water slurry raw materials in the feed pipe 11 will directly enter the spiral groove 73; the coal-water slurry raw materials will make a spiral motion in the spiral groove 73. And spiral collision occurs, that is, the coal-water slurry has completed a collision and mixing in the process of entering the stirring chamber 4, so that the coal-water slurry is quickly mixed in the stirring chamber 4.

Then the coal-water slurry after collision and mixing will be sprayed onto the bottom cavity wall of the stirring chamber 4 through the lower end slot of the spiral groove 73, and the coal-water slurry sprayed out obliquely downward can interact with the coal-water slurry in the stirring chamber 4. Collision mixing, thereby further improving the mixing effect and mixing efficiency of coal-water slurry.

The stirring chamber 4 is provided with a fixed cylinder 41 that is inclined on the vertical surface. The fixed cylinder 41 is installed on the inner wall of the tank 1. The lower end of the fixed cylinder 41 is provided with a feed port 42. The feed port 42 is located on the through-hole. At the hole 21, a discharge port 43 is provided at the upper end of the fixed cylinder 41.

The fixed cylinder 41 is rotatably connected with a rotating shaft 44 that can rotate around the axis of the fixed cylinder 41. The rotating shaft 44 is equipped with a spiral blade 45 that is rotated and embedded in the fixed cylinder 41; one end of the rotating shaft 44 extends out of the fixed cylinder 41 and is connected with the stirring The paddles 72 are each fixedly equipped with bevel gears, and the two bevel gears mesh with each other.

During the rotation of the stirring paddle 72, the stirring paddle 72 will drive the rotating shaft 44 to rotate through the two bevel gears. The rotating shaft 44 will drive the spiral blade 45 to rotate in the fixed cylinder 41. The spiral blade 45 will remove the water coal at the hole 21. The slurry is spirally lifted to the upper part of the mixing chamber 4, so that the solid particles in the coal-water slurry cannot quickly enter the grinding chamber 5 through the through holes 21, which prolongs the movement time of the solid particles in the coal-water slurry in the mixing chamber 4. This not only enables the coal-water slurry to be preliminarily mixed in the mixing chamber 4, but also prevents the grinding chamber 5 from suddenly entering a large number of solid particles and causing blockage.

The stirring chamber 4 is provided with a connecting tube 47 that is rotated and sleeved on the upper end of the stirring paddle 72. The connecting tube 47 is fixed on the inner wall of the tank 1. The stirring paddle 72 is provided with a connecting groove that connects the spiral groove 73 and the inside of the connecting tube 47. 46. The coal-water slurry entering the fixed cylinder 41 will be sprayed into the spiral groove 73 through the outlet 43, the inside of the connecting cylinder 47 and the connecting groove 46; The bottom and the fixed cylinder 41 perform circular motion, thereby improving the mixing effect and efficiency of the coal water slurry.

There are multiple fixed cylinders 41 circumferentially around the rotation axis of the stirring paddle 72, and the discharge ports 43 of the multiple fixed cylinders 41 are all connected to the inside of the connecting cylinder 47. Therefore, the coal-water slurries with different injection directions will collide with each other and form a spiral groove together. It performs spiral motion within 73 degrees, thereby further improving the mixing efficiency and mixing effect of coal-water slurry.

The inner diameter and outer diameter of the inner cover 2 gradually increase from top to bottom. When the stirring paddle 72 rotates to stir the coal-water slurry, the solid particles in the coal-water slurry will approach the inner cover 2 and move along the direction of the inner cover 2 under the action of centrifugal force. As the inner wall of the inner cover 2 descends and converges to the through hole 21, the fixed cylinder 41 and the spiral blade 45 can cooperate with each other to lift this part of the solid particles to the upper part of the mixing chamber 4, thus facilitating the pairing of the fixed cylinder 41 and the spiral blade 45. The spiral lifting of the solid particles prevents the solid particles in the coal-water slurry from being deposited at the bottom of the stirring chamber 4.

The upper end of the stirring paddle 72 is fixedly provided with a first gear 22, and a second gear 23 is engaged with the first gear 22. The second gear 23 is connected to the tank 1 by rotating around its own axis; the first gear 22 is fixedly embedded in the inner cover 2. Ring gear 24 , the inner side of the first ring gear 24 is meshed with the second gear 23 .

During the rotation of the stirring paddle 72, the stirring paddle 72 will drive the second gear 23 to reverse rotation through the first gear 22, the second gear 23 will drive the first ring gear 24 to rotate in the same direction, and the first ring gear 24 will drive the inner cover 2. Rotate and grind the solid particles in the grinding chamber 5 and the stirring chamber 4 to improve the grinding efficiency of the coal-water slurry.

It is worth noting that the rotation directions of the stirring paddle 72 and the inner cover 2 are opposite. The vortex generated by the stirring paddle 72 during the rotation will collide with the vortex generated by the inner cover 2 during the rotation, thereby forming a mixed flow, which improves the efficiency of the mixing process. Mixing effect of coal water slurry.

As shown in Figure 5, the grinding unit 8 includes a rotating roller 81 that is arranged vertically and is connected to the inner wall of the tank 1 to rotate around its own axis. The side wall of the rotating roller 81 is provided with an annular grinding groove 82; the outer wall of the inner cover 2 A grinding seat 83 rotatably embedded in the grinding groove 82 is installed on the inner wall of the outer cover 3. The grinding seat 83 is provided with an arc-shaped grinding surface 85 and an inclined guide surface 84.

During the rotation of the inner cover 2 and the outer cover 3, the coal-water slurry in the grinding chamber 5 will be driven to rotate, and the solid particles in the coal-water slurry will move to between the grinding surface 85 and the grinding groove 82 through the guidance surface 84 gap, the inner cover 2 and the outer cover 3 will drive the grinding base 83 to rotate and grind the solid particles between the grinding surface 85 and the grinding groove 82; the solid particles ground to a qualified size will enter the mixing chamber 6 through the filter hole 31 in time, The remaining solid particles will still be in the grinding chamber 5, so that the ground solid particles can be separated in time to avoid clogging inside the grinding chamber 5.

It is worth mentioning that there are multiple groups of grinding units 8 circumferentially arranged around the axis of the tank 1 , a plurality of grinding grooves 82 are provided sequentially from top to bottom on the rotating roller 81 , and the grinding seats 83 are provided on the inner cover 2 and the outer cover 3 There are multiple grinders arranged from top to bottom to improve the grinding efficiency and effect of coal-water slurry.

As shown in Figure 6, the lower ends of the rotating roller 81 and the stirring paddle 72 both extend out of the tank 1 and are fixedly equipped with synchronizing wheels 87. The synchronizing wheels 87 on the rotating roller 81 and the synchronizing wheels 87 on the stirring paddle 72 The set is equipped with the same timing belt 88. During the rotation of the stirring paddle 72, the stirring paddle 72 will drive all the rotating rollers 81 to rotate through the synchronous wheel 87 and the synchronous belt 88, so that all the grinding units 8 grind the coal-water slurry synchronously.

As shown in Figures 7 to 9, every two adjacent guide surfaces 84 conflict with each other. The guide surface 84 is located at one end of the grinding seat 83. The width of the guide surface 84 extends from the end of the grinding seat 83 to the grinding surface 85. It gradually decreases, and the upper and lower sides of the guide surface 84 and the grinding surface 85 are integrally formed with ribs 86 that can extend into the grinding groove 82 .

The solid particles that move to the guide surface 84 will all move to the guide surface 84 . The ribs 86 will prevent the solid particles from detaching 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 , the ribs 86 will prevent the solid particles from detaching from the upper and lower sides of the grinding surface 85 to improve the grinding effect of the grinding seat 83 and the grinding groove 82 on the solid particles.

The grinding base 83 is provided with a leakage groove 89 that runs through the upper and lower sides of the grinding base 83 at one end of the grinding base 83 that is in contact with the outer cover 3 . The solid particles that move to the inner wall of the outer cover 3 and the outer wall of the inner cover 2 due to centrifugal force can move downward through the leakage chute 89 to prevent the solid particles from accumulating on the grinding seat 83 to ensure that the grinding chamber 5 All solid particles can be ground.

As shown in Figure 7, the inner and outer diameters of the outer cover 3 gradually decrease from top to bottom, and the grooves of the grinding groove 82 are tilted downward, so the solid particles in the coal-water slurry will move along the edges of the outer cover 3 under the action of centrifugal force. The inner wall rises, and the solid particles that enter the grinding tank 82 will be tilted downward and thrown out by the rotating roller 81 when they are discharged from the grinding tank 82, so that the solid particles in the grinding chamber 5 can continuously float up and down to prevent the solid particles from being deposited in the grinding chamber. 5 bottom to facilitate the grinding seat 83 to grind solid particles.

As shown in Figure 5, the upper end of the rotating roller 81 is fixedly sleeved with a third gear 32. The third gear 32 is meshed with a fourth gear 33. The fourth gear 33 is meshed with a fifth gear 34. The fourth gear 33 and the third gear 33 are meshed with each other. The five gears 34 are all connected to the tank 1 in rotation around their own axes; a second ring gear 35 is fixedly set inside the outer cover 3 , and the inner side of the second ring gear 35 is meshed with the fifth gear 34 .

During the rotation of the rotating roller 81, the rotating roller 81 will drive the fifth gear 34 to rotate in the same direction through the third gear 32 and the fourth gear 33. The fifth gear 34 will drive the second ring gear 35 to rotate in the same direction. The ring 35 will drive the outer cover 3 to rotate and grind the solid particles in the grinding chamber 5 and the mixing chamber 6 to improve the grinding efficiency and grinding effect of the coal-water slurry.

It is worth noting that the rotation directions of the outer cover 3 and the inner cover 2 are opposite. The vortex generated by the outer cover 3 during the rotation will collide with the eddy current generated by the inner cover 2 during the rotation, thereby forming a mixed flow and improving the water-coal efficiency. The mixing effect of pulp.

As shown in Figure 7, a scraper 36 is installed on the inner wall of the outer cover 3. During the rotation of the outer cover 3, the scraper 36 will rotate against the bottom wall of the grinding chamber 5, causing the solid particles to settle at the bottom of the grinding chamber 5. It can be tilted and floated upward again along the inner wall of the outer cover 3 so that the grinding seat 83 can grind the solid particles in the grinding chamber 5 in all directions.

It is worth noting that during the coal water slurry discharge process, the rotating scraper 36 can scrape the impurities and large particles deposited in the grinding chamber 5 into the impurity discharge pipe 13 to facilitate the discharge of the impurities and large particles.

As shown in Figure 2, a number of stirring blades 37 extending into the mixing chamber 6 are installed on the outer wall of the outer cover 3. During the rotation of the outer cover 3, the outer cover 3 will rotate through the stirring blades 37 to stir the contents in the mixing chamber 6. The coal water slurry can be further mixed in the mixing chamber 6 .

The inner diameter of the tank 1 gradually increases from top to bottom. The mixing chamber 6 is provided with a screw conveyor 61 arranged at an angle on the vertical plane. The screw conveyor 61 is installed on the inner wall of the tank 1. The screw conveyor 61 is installed on the inner wall of the tank 1. The inlet of 61 is located at the largest inner diameter of the tank 1, and the outlet of the screw conveyor 61 is located at the smallest inner diameter of the tank 1 and faces the outer cover 3.

The solid particles in the mixing chamber 6 will drop to the lower part of the mixing chamber 6 along the inner wall of the tank 1 under the action of centrifugal force. The screw conveyor 61 will spirally transport the solid particles accumulated to the lower part of the mixing chamber 6 upward to The upper part of the mixing chamber 6, and this part of the solid particles will be sprayed onto the outer wall of the outer cover 3 and the stirring blade 37 along with the coal water slurry, so that this part of the coal water slurry can be further broken and mixed.

The implementation principle of the biomass coal-water slurry mixing equipment in the embodiment of the present application is: during the production process of coal-water slurry, the raw materials of the biomass coal-water slurry will enter the spiral groove 73 through the feed pipe 11 during preliminary mixing. , the coal-water slurry will be spirally collided and mixed in the spiral groove 73, and then the coal-water slurry will be sprayed through the lower end of the spiral groove 73 onto the bottom wall of the stirring chamber 4, and the coal-water slurry will be sprayed downwards obliquely It will collide and mix with the coal water slurry in the stirring chamber 4, and the solid particles in the coal water slurry will fall along the inner wall of the inner cover 2 and converge to the penetration hole 21 under the action of centrifugal force.

During the rotation process, the stirring paddle 72 will drive the rotating shaft 44 to rotate through the two bevel gears. The rotating shaft 44 will drive the spiral blade 45 to rotate in the fixed cylinder 41. The spiral blade 45 will spirally lift and mix the coal-water slurry at the through hole 21. Then the coal-water slurry in the fixed cylinder 41 will be sprayed into the spiral groove 73 through the outlet 43, the inside of the connecting cylinder 47 and the connecting groove 46. The coal-water slurries with different injection directions will collide with each other and together in the spiral groove 73 The internal spiral motion enables the coal water slurry to be quickly mixed.

Part of the mixed coal-water slurry will enter the grinding chamber 5 through the through hole 21, and the stirring paddle 72 will rotate through the first gear 22, the second gear 23, and the first ring gear 24 to drive the inner cover 2 in the reverse direction. Rotate, the stirring paddle 72 will drive 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 will drive the outer cover 3 through the third gear 32, the fourth gear 33, the fifth gear 34 and the second ring gear 35 Rotate in the same direction.

The guide surface 84 will move the solid particles in the grinding chamber 5 to the grinding surface 85. The grinding chamber 5 and the grinding groove 82 cooperate with each other so that the solid particles are ground; the solid particles in the grinding chamber 5 will move along the grinding surface 85 under the action of centrifugal force. The inner wall of the outer cover 3 rises, and the solid particles entering the grinding tank 82 will be tilted downward by the rotating roller 81 when they are discharged from the grinding tank 82, so that the solid particles in the grinding chamber 5 can continuously float up and down.

The solid particles ground to a qualified size will enter the mixing chamber 6 through the filter holes 31. During the rotation process, the outer cover 3 will rotate through the stirring blades 37 to stir the coal-water slurry in the mixing chamber 6, and the solids in the mixing chamber 6 will be evenly mixed. The particles will drop to the lower part of the mixing chamber 6 along the inner wall of the tank 1 under the action of centrifugal force. The screw conveyor 61 will spirally transport the solid particles accumulated in the lower part of the mixing chamber 6 upward to the upper part of the mixing chamber 6. And this part of the solid particles will be sprayed onto the outer wall of the outer cover 3 and the stirring blade 37 along with the coal water slurry, so that this part of the coal water slurry can be further broken and mixed.

When the mixing and grinding of the coal-water slurry is completed, the coal-water slurry will be discharged out of the tank 1 through the discharge pipe 12, and impurities and large particles will be discharged out of the tank 1 through the discharge pipe 13.

To sum up, this application can simultaneously carry out multiple mixing, multiple grinding and screening of coal-water slurry without the need to transport the coal-water slurry, thereby improving the production efficiency and production quality of biomass coal-water slurry.

The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application shall be covered by the scope of protection of the present application. Inside.

Claims (2)

1. A biomass coal-water slurry mixing equipment, characterized by: including a tank (1) with a feed pipe (11), a discharge pipe (12) and an impurity discharge pipe (13). The tank (1) ) is provided with an inner cover (2) and an outer cover (3) that can rotate around its own axis and rotate in opposite directions. The inner cover (2) and the outer cover (3) are arranged at intervals between the inside and outside; The inner cover (2) and the outer cover (3) jointly divide the inside of the tank (1) into a stirring chamber (4), a grinding chamber (5) and a mixing chamber (6) arranged in sequence from the inside to the outside. The inner cover (2) ) is provided with a through hole (21) connected to the mixing chamber (4) and the grinding chamber (5), and the outer cover (3) is provided with a filter hole (21) connected to the grinding chamber (5) and the mixing chamber (6) 31); The feed pipe (11) is connected to the mixing chamber (4), the impurity discharge pipe (13) is connected to the grinding chamber (5), and the discharge pipe (12) is connected to the mixing chamber (6); The stirring chamber (4) is provided with a stirring unit (7), and the grinding chamber (5) is provided with a grinding unit (8); The grinding unit (8) is provided with a grinding groove (82), and both the inner cover (2) and the outer cover (3) are provided with a grinding seat (83) that is rotated and embedded in the grinding groove (82). The grinding seat (83) There is a grinding surface (85) and a guide surface (84) used to guide the material particles to the gap between the grinding surface (85) and the grinding groove (82); The stirring unit (7) includes a first motor (71) installed on the tank (1). The output shaft of the first motor (71) is provided with a stirring paddle (72) extending into the stirring chamber (4). ); There is a spiral groove (73) inside the stirring paddle (72). The feed pipe (11) is connected to the upper notch of the spiral groove (73). The rotation axes of the feed pipe (11) and the stirring paddle (72) are the same. , the lower end notch of the spiral groove (73) runs through the side of the stirring paddle (72) and faces the bottom cavity wall of the stirring chamber (4); The grinding unit (8) includes a rotating roller (81) that is arranged vertically and can rotate around its own axis, and the grinding groove (82) is arranged in an annular shape and is located on the side wall of the rotating roller (81); One end of the rotating roller (81) and the stirring paddle (72) is fixed with a synchronous wheel (87). The synchronous wheel (87) on the rotating roller (81) and the synchronous wheel (87) on the stirring paddle (72) are set Equipped with the same timing belt (88); A first gear (22) is fixedly mounted on the stirring paddle (72), a second gear (23) is engaged with the first gear (22), and the second gear (23) is rotatably connected to the tank (1); A first ring gear (24) is fixedly embedded in the inner cover (2), and the inner side of the first ring gear (24) meshes with the second gear (23); A third gear (32) is fixedly sleeved on the rotating roller (81), a fourth gear (33) is engaged with the third gear (32), and a fifth gear (34) is engaged with the fourth gear (33). The fourth gear (33) and the fifth gear (34) are both rotationally connected to the tank (1); The inner fixed sleeve of the outer cover (3) is provided with a second ring gear (35), and the inner side of the second ring gear (35) meshes with the fifth gear (34); The stirring chamber (4) is provided with a fixed cylinder (41) that is inclined on the vertical surface. The fixed cylinder (41) is provided with a rotating shaft (44) that can rotate around the axis of the fixed cylinder (41). The rotating shaft (41) 44) is provided with a spiral blade (45) that is rotated and embedded in the fixed cylinder (41); One end of the rotating shaft (44) extends out of the fixed cylinder (41) and is fixed with a bevel gear on the stirring paddle (72), and the two bevel gears mesh with each other; The lower end of the fixed cylinder (41) is provided with a feed port (42), the penetration hole (21) is located at the feed port (42), and the upper end of the fixed cylinder (41) is provided with a discharge port (43); The stirring chamber (4) is provided with a connecting tube (47) that is rotated and sleeved on the upper end of the stirring paddle (72). The stirring paddle (72) is provided with a connecting tube that is connected to the inside of the spiral groove (73) and the connecting tube (47). Connection slot (46); There are multiple fixed cylinders (41) circumferentially around the rotation axis of the stirring paddle (72), and the discharge ports (43) of the multiple fixed cylinders (41) are all connected to the inside of the connecting cylinder (47); A plurality of grinding grooves (82) are provided on the rotating roller (81) from top to bottom, and a plurality of grinding seats (83) are provided on the inner cover (2) and the outer cover (3) from top to bottom. ; Every two adjacent guide surfaces (84) conflict with each other. The guide surface (84) is located at one end of the grinding seat (83). The width of the guide surface (84) extends from the end of the grinding seat (83) to the grinding surface. (85) gradually decreases, and the upper and lower sides of the guide surface (84) and the grinding surface (85) are provided with ribs (86) that can extend into the grinding groove (82); One end of the grinding seat (83) in contact with the outer cover (3) is provided with a leakage groove (89) that runs through the upper and lower sides of the grinding seat (83), and the grinding seat (83) is in contact with the inner cover (2) One end is provided with a leakage groove (89) that runs through the upper and lower sides of the grinding seat (83); The inner diameter and outer diameter of the inner cover (2) gradually increase from top to bottom, the inner diameter and outer diameter of the outer cover (3) gradually decrease from top to bottom, and the inner diameter of the tank (1) increases from top to bottom. gradually increase; The mixing chamber (6) is provided with a screw conveyor (61) that is inclined on the vertical plane. The entrance of the screw conveyor (61) is located at the largest inner diameter of the tank (1). The screw conveyor (61) The outlet is located at the smallest inner diameter of the tank (1) and faces the outer cover (3). 2. A biomass coal-water slurry mixing equipment according to claim 1, characterized in that: the outer cover (3) is provided with a scraper (36) that can rotate against the bottom wall of the grinding chamber (5). ) and the stirring blade (37) extending into the mixing chamber (6).