Adding device of powder coal water slurry additive for coal slurry doped waste preparation

Abstract

The invention discloses an adding device of a powdery coal water slurry additive for coal slurry doped waste preparation, and relates to the technical field of coal water slurry additive preparation, the adding device comprises a vertical frame, the vertical frame is provided with a mixing tank, and the middle part of the mixing tank is provided with a uniform stirring mechanism; the uniform stirring mechanism comprises a rotary drum shell rotationally installed at the axis of the mixing tank and a driving motor fixed to the mixing tank, the outer side of the upper end of the rotary drum shell is sleeved with a straight gear ring, the output end of the driving motor is provided with a straight gear meshed with the straight gear ring, a drum cavity of the rotary drum shell is connected with a third adding mechanism, and a plurality of uniform dispersing rods are installed on the outer shell wall of the rotary drum shell. The mixing tank is further provided with a circulating suction system for sucking the drum cavity of the rotary drum shell, and the upper end of the mixing tank is further provided with a second adding mechanism and a third adding mechanism; and through the arrangement of the circulating material suction system, bubbles in the mixed material entering the material suction chamber can be discharged out of the mixed material, and the stirring, scattering and uniform stirring efficiency and quality of the mixed material are improved.

Description

Technical Field

[0001] The invention relates to the technical field of preparation of water-coal slurry additives, in particular to a device for adding powdered water-coal slurry additives for preparing coal slurry mixed with waste. Background Art

[0002] Coal-water slurry is a low-pollution, high-efficiency, pipeline-transportable coal-based fluid fuel that can replace oil. However, in the preparation process of coal-water slurry, additives can not only improve the hydrophilicity of the coal particle surface and adjust the charge density of the particle surface, but also establish a three-dimensional structure in the coal slurry to prevent precipitation, so that the coal-water slurry has the characteristics of increasing concentration, reducing viscosity, and improving fluidity in normal use, and is not easy to precipitate when it is stationary.

[0003] The existing coal water slurry additives are generally added and mixed directly at one time during the adding process, which often leads to problems such as agglomeration, caking and easy precipitation in the mixed materials during the mixing process, resulting in poor stirring and mixing efficiency, uneven mixing dispersion and mixing quality.

[0004] Therefore, it is necessary to provide a device for adding powdered water-coal slurry additives for preparing coal slurry mixed with waste to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for adding powdered water-coal slurry additives for coal slurry mixed with waste preparation, comprising a stand, the stand is equipped with a mixing tank, the middle part of the mixing tank is equipped with a stirring mechanism, the stirring mechanism comprises a rotating drum shell rotatably installed at the axis of the mixing tank and a driving motor fixed on the mixing tank, the upper end outer side of the rotating drum shell is sleeved with a spur gear ring, the output end of the driving motor is equipped with a spur gear meshing with the spur gear ring, the barrel cavity of the rotating drum shell is connected with adding mechanism three, the outer shell wall of the rotating drum shell is equipped with a plurality of uniform dispersing rods, the uniform dispersing rod comprises a back rod connected to the shell wall of the rotating drum shell, the back rod is provided with an inlet channel connected to the barrel cavity of the rotating drum shell, a cutting blade is installed on the long rod surface of the back rod, and an inlet port connected to the inlet channel is provided on the cutting blade, the mixing tank is also equipped with a circulating suction system for sucking the barrel cavity of the rotating drum shell, and the upper end of the mixing tank is also respectively equipped with adding mechanism two, adding mechanism three and adding mechanism one.

[0006] Preferably, the adding mechanism 1 is used to add coal powder to the mixing tank, and the adding mechanism 1 includes a material guide hood and a dispersion plate, the dispersion plate is sleeved on the outer side of the upper shell wall of the rotating drum shell in the tank cavity of the mixing tank, the material guide hood is installed at the upper end of the mixing tank, and the lower end of the material guide hood is connected to a feed pipe 1, and the outlet of the feed pipe 1 points to the upper plate surface of the dispersion plate.

[0007] Preferably, the second adding mechanism is used to add the aqueous solution to the mixing tank, and the second adding mechanism comprises a liquid storage tank and a spray head, the inlet of the spray head is connected to the liquid storage tank, the spray port of the spray head is inclined to extend above the tank cavity of the mixing tank, the spray heads are evenly arranged along the circumference of the upper end of the mixing tank, and the liquid storage tank is also connected to a second feed pipe.

[0008] Preferably, the cross-section of the cutting blade is triangular in structure, and a trumpet-shaped drainage port is provided at the inlet of the flow inlet.

[0009] Preferably, a dispersing rack corresponding to the inlet is also installed on the back rod, and the dispersing rack includes a dispersing rod which is vertically and rotatably installed with the back rod, the dispersing rod passes through the inlet, and a conical fan head is installed at one end of the dispersing rod located at the inlet.

[0010] Preferably, an inclined stirring rod is installed at one end of the scattering rod located on the back rod, and a plurality of the stirring rods are arranged in a circle.

[0011] Preferably, the outer side of the rod wall of the dispersion rod located in the inlet is sleeved with a guide screw blade.

[0012] Preferably, the adding mechanism three is used to add chemical additives to the mixing tank, and the adding mechanism three includes a feed tank installed at the upper end of the mixing tank, the feed tank is connected to a feed guide pipe, the feed guide pipe is connected to a feed cover, the feed cover is rotatably connected to the barrel mouth at the upper end of the rotating drum shell, the feed cover is connected to a feed pipe three extending into the bottom end of the rotating drum shell, the tube wall of the feed pipe three is evenly distributed with a plurality of discharge holes, a discharge nozzle is installed in the discharge hole, the discharge nozzle includes an elastic plug fixed in the discharge hole, and the elastic plug is provided with a unidirectional conical discharge hole.

[0013] Preferably, the circulating suction system includes a sealing plug disk installed in the cylinder cavity at the upper end of the rotating drum shell, the cylinder cavity of the rotating drum shell above the sealing plug disk is set as a negative pressure chamber, and the cylinder cavity of the rotating drum shell below the sealing plug disk is set as a suction chamber, the sealing plug disk is connected to the feed cover through a spring, the negative pressure chamber is connected to suction pipe 2, suction pipe 2 is connected to a negative pressure pump, the suction chamber is connected to suction pipe 1, suction pipe 1 is connected to a suction pump, the output end of the suction pump is introduced into the tank cavity of the mixing tank, and suction pipe 1 passes through the sealing plug disk, and the sealing plug disk can slide along the wall of suction pipe 1.

[0014] Preferably, a cover ring is rotatably mounted on the lower end of the suction chamber, a blade ring is mounted at the center of the cover ring, and a material guiding screw blade extending into the annular cavity between the drum shell and the feed pipe 3 is mounted on the lower end of the blade ring.

[0015] Compared with the prior art, the present invention provides a device for adding powdered water-coal slurry additives for preparing coal slurry mixed with waste, which has the following beneficial effects:

[0016] The present invention adopts the structural design of the stirring mechanism. During the process of the material being stirred by the scrambling rod, the circulating suction system is started to suck the cylinder shell cavity, and the mixed material outside the mixing tank tends to flow toward and follow the movement trajectory of the cutting blade. The mixed material outside the mixing tank can flow toward the vicinity of the scrambling rod again under the effect of being stirred by the scrambling rod, so that the scrambling rod can fully stir the mixed material, so that large particles of the material that are sticky and agglomerated can flow to the inlet area, and the large particles of the material that are sticky and agglomerated can be cut and dispersed by the cutting blade, thereby improving the mutual contact effect between the mixed material and the cutting blade, thereby fully improving the stirring, stirring and homogenizing efficiency and quality of the mixed material.

[0017] In the present invention, the structural design of the circulating suction system is adopted, the negative pressure intensity of the negative pressure chamber is controlled by a negative pressure pump, and the discharge flow rate of the suction chamber is controlled by a suction pump, thereby completing the feeding and discharging of the suction chamber. In addition, during the process in which the negative pressure chamber acts as a sealing plug disk, the suction chamber also has a certain negative pressure effect, so that the mixed material entering the suction chamber is in a negative pressure environment, which is conducive to the discharge of bubbles in the mixed material entering the suction chamber into the mixed material, thereby improving the mixing quality of the mixed material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the stirring mechanism in the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the feed pipe three in the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the elastic plug in the present invention;

[0022] Figure 5 It is a structural schematic diagram of the circulating material suction system in the present invention;

[0023] Figure 6 It is a structural schematic diagram of the dispersion rod in the present invention;

[0024] Figure 7 It is a schematic cross-sectional structural diagram of the dispersion rod in the present invention;

[0025] In the figure: 1, stand; 2, mixing tank; 3, adding mechanism 1; 4, adding mechanism 2; 5, adding mechanism 3; 6, stirring mechanism; 31, material guide cover; 32, feed pipe 1; 33, uniform dispersion plate; 41, liquid storage tank; 42, feed pipe 2; 43, spray head; 51, feed tank; 52, material guide pipe; 53, feed cover; 54, feed pipe 3; 55, discharge nozzle; 56, cover ring; 57, fan ring; 58, material guide screw blade; 541, discharge hole; 551, elastic plug; 552, one-way conical discharge hole; 61, drum shell; 62, uniform dispersion rod; 63 , spur gear ring; 64, spur gear; 65, drive motor; 66, circulating suction system; 611, suction chamber; 612, negative pressure chamber; 621, back rod; 622, cutting blade; 623, stirring rack; 6211, inlet channel; 6221, inlet port; 6222, trumpet-shaped drainage port; 6231, dispersing rod; 6232, guide screw blade; 6233, conical fan head; 6234, stirring rod; 661, sealing plug disk; 662, suction pump; 663, suction tube one; 664, spring; 665, negative pressure pump; 666, suction tube two. DETAILED DESCRIPTION

[0026] Reference Figure 1-Figure 7The present invention provides a technical solution: a device for adding powdered water-coal slurry additives for coal slurry mixed with waste, comprising a stand 1, a mixing tank 2 is installed on the stand 1, a stirring mechanism 6 is installed in the middle of the mixing tank 2, the stirring mechanism 6 comprises a rotating drum shell 61 rotatably installed at the axis of the mixing tank 2 and a driving motor 65 fixed on the mixing tank 2, a spur gear ring 63 is sleeved on the outer side of the upper end of the rotating drum shell 61, a spur gear 64 meshing with the spur gear ring 63 is installed on the output end of the driving motor 65, and the drum of the rotating drum shell 61 is provided with a spur gear 64 meshing with the spur gear ring 63. The cavity is connected to an adding mechanism 3 5, the outer shell wall of the rotating drum shell 61 is installed with a plurality of scattering rods 62, the scattering rod 62 includes a back rod 621 connected to the shell wall of the rotating drum shell 61, the back rod 621 is provided with an inlet channel 6211 connected to the cylinder cavity of the rotating drum shell 61, a cutting blade 622 is installed on the long rod surface of the back rod 621, and the cutting blade 622 is provided with an inlet port 6221 connected to the inlet channel 6211, and the mixing tank 2 is also installed with a circulating suction system 66 for sucking the cylinder cavity of the rotating drum shell 61. The mixing tank 2 is also provided with adding mechanism 2 4, adding mechanism 3 5 and adding mechanism 1 3 at the upper end; the spur gear 64 is driven to rotate by the driving motor 65, the spur gear 64 drives the spur gear ring 63 and the drum shell 61 to rotate synchronously, and the drum shell 61 drives the scattering rod 62 to stir and mix the added powdered water-coal slurry additive raw materials, wherein, in the process of stirring the materials by the scattering rod 62, the circulating suction system 66 is started to suck the cylinder cavity of the drum shell 61, and the mixed materials outside the mixing tank 2 follow the motion track of the cutting blade 622 The mixed material outside the mixing tank 2 can flow toward the vicinity of the scattering rod 62 again under the effect of being dispersed by the scattering rod 62, so that the scattering rod 62 can fully disperse the mixed material, so that large particles of sticky and agglomerated materials can flow to the inlet 6221 area, and the large particles of sticky and agglomerated materials can be separated by the cutting blade 622, thereby improving the mutual contact effect between the mixed material and the cutting blade 622, thereby fully improving the mixing efficiency and stirring quality of the mixed material.

[0027] In this embodiment, the adding mechanism 3 is used to add coal powder to the mixing tank 2. The adding mechanism 3 includes a material guide cover 31 and a dispersion plate 33. The dispersion plate 33 is sleeved on the outer side of the upper shell wall of the rotating drum shell 61 in the tank cavity of the mixing tank 2. The material guide cover 31 is installed at the upper end of the mixing tank 2. The lower end of the material guide cover 31 is connected to a feed pipe 32, and the outlet of the feed pipe 32 points to the upper plate surface of the dispersion plate 33. After the solid coal powder is introduced into the upper surface of the dispersion plate 33, the dispersion plate 33 generates centrifugal force as the rotating drum shell 61 rotates, so that the coal powder falling on the surface of the dispersion plate 33 is centrifugally scattered, so that the addition of coal powder is more uniform, avoiding the agglomeration and caking of coal powder, thereby improving the coal powder mixing effect.

[0028] In this embodiment, the adding mechanism 2 4 is used to add aqueous solution to the mixing tank 2. The adding mechanism 2 4 includes a liquid storage tank 41 and a spray head 43. The inlet of the spray head 43 is connected to the liquid storage tank 41, and the spray port of the spray head 43 is inclined to extend into the top of the tank cavity of the mixing tank 2. The spray heads 43 are evenly arranged along the circumference of the upper end of the mixing tank 2, and the liquid storage tank 41 is also connected to a feed pipe 2 42; that is, the mixture of aqueous solution in which the liquid used for the preparation of water-coal slurry and waste accounts for a relatively large proportion is directly sprayed into the tank cavity of the mixing tank 2 through the spray head 43, and the sprayed and falling aqueous solution molecules can be mixed with the evenly dispersed and falling coal powder, thereby greatly improving the efficiency and effect of the two mixing to form a fluid.

[0029] In this embodiment, the cross-section of the cutting blade 622 is a triangular structure, and a trumpet-shaped drainage port 6222 is provided at the inlet of the inlet 6221 so that the fluid of the mixed material in the outer area near the cutting blade 622 can flow smoothly to the inlet 6221 area.

[0030] In this embodiment, a dispersing rack 623 corresponding to the inlet 6221 is also installed on the back rod 621, and the dispersing rack 623 includes a dispersing rod 6231 which is vertically and rotatably installed with the back rod 621, and the dispersing rod 6231 passes through the inlet 6221. A conical fan head 6233 is installed at one end of the dispersing rod 6231 located at the inlet 6221. The conical fan head 6233 can further disperse the clumped and agglomerated mixed materials introduced into the inlet 6221 area to avoid blockage of the inlet 6221.

[0031] In this embodiment, the dispersing rod 6231 is located at one end of the back rod 621 and is equipped with an inclined stirring rod 6234, and multiple stirring rods 6234 are arranged in a circle, which is beneficial to further disperse the mixed material in the area of ​​the cut blade 622 and the conical fan head 6233 and the processed material, thereby further improving the dispersion efficiency.

[0032] In this embodiment, the dispersion rod 6231 is located in the inlet 6221 and is sleeved with a guide blade 6232 on the outside of the rod wall. The spiral guidance of the guide blade 6232 further avoids the appearance of clogging wall blocks in the inlet 6221, and at the same time, it is beneficial to the smoothness of the mixed material entering the inlet 6221.

[0033] In this embodiment, the adding mechanism three 5 is used to add chemical additives to the mixing tank 2. The adding mechanism three 5 includes a feed tank 51 installed at the upper end of the mixing tank 2. The feed tank 51 is connected to a guide pipe 52. The guide pipe 52 is connected to a feed cover 53. The feed cover 53 is rotatably connected to the barrel mouth at the upper end of the rotating drum shell 61. The feed cover 53 is connected to a feed pipe three 54 extending into the bottom end of the rotating drum shell 61. The tube wall of the feed pipe three 54 is evenly distributed with a plurality of discharge holes 541, and the discharge holes 541 are installed with The discharge nozzle 55 comprises an elastic plug 551 fixed in the discharge hole 541, and a one-way conical discharge hole 552 is provided on the elastic plug 551; that is, the chemical additive with a relatively small proportion of liquid used for the preparation of water-coal slurry mixed with waste is discharged in one direction through the one-way conical discharge hole 552, and the chemical additive is discharged into the mixed material for mixing under the circulating drainage and material guiding mode of the circulating suction system 66, thereby improving the uniformity and dispersion effect of mixing the chemical additive with a relatively small proportion and the mixed material.

[0034] In this embodiment, the circulating suction system 66 includes a sealing plug disc 661 installed in the cylinder cavity at the upper end of the rotating drum shell 61, the cylinder cavity of the rotating drum shell 61 above the sealing plug disc 661 is set as a negative pressure chamber 612, and the cylinder cavity of the rotating drum shell 61 below the sealing plug disc 661 is set as a suction chamber 611, the sealing plug disc 661 is connected to the feed cover 53 through a spring 664, the negative pressure chamber 612 is connected to a suction pipe 666, the suction pipe 666 is connected to a negative pressure pump 665, the suction chamber 611 is connected to a suction pipe 663, the suction pipe 663 is connected to a suction pump 662, and the output end of the suction pump 662 is introduced into the tank cavity of the mixing tank 2 , and the suction tube 663 passes through the sealing plug disk 661, and the sealing plug disk 661 can slide along the wall of the suction tube 663; the negative pressure intensity of the negative pressure chamber 612 is controlled by the negative pressure pump 665, and the discharge flow rate of the suction chamber 611 is controlled by the suction pump 662, so as to complete the feeding and discharging of the suction chamber 611, and in the process of the negative pressure chamber 612 acting on the sealing plug disk 661, the suction chamber 611 also has a certain negative pressure effect, so that the mixed material entering the suction chamber 611 is in a negative pressure environment, which is conducive to the discharge of bubbles in the mixed material entering the suction chamber 611 into the mixed material, thereby improving the mixing quality of the mixed material.

[0035] In this embodiment, a cover ring 56 is rotatably installed at the lower end of the suction chamber 611, a fan blade ring 57 is installed at the center of the cover ring 56, and a material guiding screw blade 58 is installed at the lower end of the fan blade ring 57, which extends into the annular cavity between the rotating drum shell 61 and the feed pipe three 54; that is, in the process of the mixed material passing through the material guiding screw blade 58 and the fan blade ring 57, the material guiding screw blade 58 and the fan blade ring 57 can be driven to rotate, and the material guiding screw blade 58 can assist in driving the mixed material to flow upward in one direction, so as to improve the mixing quality.

[0036] In specific implementation, it includes the following steps:

[0037] S1: Start the driving motor 65 to make the mixing rod 62 stir, and add the coal powder and the aqueous solution into the mixing tank 2 through the adding mechanism 1 3 and the adding mechanism 2 4 respectively;

[0038] S2: Restart the circulating material suction system 66 to perform circulating material suction, and the mixed material outside the mixing tank 2 tends to move toward and follow the movement trajectory of the cutting blade 622. The mixed material outside the mixing tank 2 can flow toward the vicinity of the scattering rod 62 again under the effect of being dispersed by the scattering rod 62, so that the scattering rod 62 can fully disperse the mixed material, so that the large particles of the sticky and agglomerated materials can flow to the inlet 6221 area, and the large particles of the sticky and agglomerated materials can be cut and dispersed by the cutting blade 622;

[0039] S3: Add chemical additives through adding mechanism 3 5 for mixing.

[0040] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for adding powdered water-coal slurry additives for preparing coal slurry with waste, comprising a stand (1), on which a mixing tank (2) is installed, characterized in that: A stirring mechanism (6) is installed in the middle of the mixing tank (2), and the stirring mechanism (6) comprises a rotating drum shell (61) rotatably installed at the axis of the mixing tank (2) and a driving motor (65) fixed on the mixing tank (2). A spur gear ring (63) is sleeved on the outer side of the upper end of the rotating drum shell (61), and a spur gear (64) meshing with the spur gear ring (63) is installed at the output end of the driving motor (65). The cylinder cavity of the rotating drum shell (61) is connected to the adding mechanism three (5). The outer shell wall of the rotating drum shell (61) is installed with a plurality of uniformly dispersing rods (62), and the uniformly dispersing rods (62) include A back rod (621) is connected to the shell wall of the rotating drum shell (61), and an inlet channel (6211) communicating with the cylinder cavity of the rotating drum shell (61) is provided in the back rod (621). A cutting blade (622) is installed on the long rod surface of the back rod (621), and an inlet port (6221) communicating with the inlet channel (6211) is provided on the cutting blade (622). A circulating suction system (66) for sucking the cylinder cavity of the rotating drum shell (61) is also installed on the mixing tank (2), and an adding mechanism 2 (4), an adding mechanism 3 (5) and an adding mechanism 1 (3) are also installed on the upper end of the mixing tank (2).

2. The device for adding powdered coal water slurry additive for preparing coal slurry with waste as claimed in claim 1, characterized in that: The adding mechanism (3) is used to add coal powder to the mixing tank (2). The adding mechanism (3) comprises a material guide cover (31) and a dispersion plate (33). The dispersion plate (33) is sleeved on the outer side of the upper shell wall of the rotating drum shell (61) in the tank cavity of the mixing tank (2). The material guide cover (31) is installed at the upper end of the mixing tank (2). The lower end of the material guide cover (31) is connected to a feed pipe (32). The outlet of the feed pipe (32) points to the upper plate surface of the dispersion plate (33).

3. The device for adding powdered coal water slurry additive for preparing coal slurry with waste as claimed in claim 2, characterized in that: The second adding mechanism (4) is used to add aqueous solution into the mixing tank (2). The second adding mechanism (4) comprises a liquid storage tank (41) and a spray head (43). The inlet of the spray head (43) is connected to the liquid storage tank (41). The spray port of the spray head (43) extends obliquely into the upper part of the tank cavity of the mixing tank (2). The spray heads (43) are evenly arranged along the circumference of the upper end of the mixing tank (2). The liquid storage tank (41) is also connected to a second feeding pipe (42).

4. The device for adding powdered coal water slurry additive for preparing coal slurry with waste as claimed in claim 1, characterized in that: The cross section of the cutting blade (622) is triangular in structure, and a trumpet-shaped drainage port (6222) is provided at the inlet of the inlet (6221).

5. The device for adding powdered coal water slurry additive for preparing coal slurry with waste as claimed in claim 1, characterized in that: The back rod (621) is also provided with a dispersing frame (623) corresponding to the inlet (6221), and the dispersing frame (623) includes a dispersing rod (6231) vertically and rotatably installed with the back rod (621), the dispersing rod (6231) passes through the inlet (6221), and a conical fan head (6233) is installed at one end of the dispersing rod (6231) located at the inlet (6221).

6. The device for adding powdered coal water slurry additive for preparing coal slurry with waste as claimed in claim 5, characterized in that: The dispersing rod (6231) is located at one end of the back rod (621) and is provided with an inclined stirring rod (6234), and a plurality of the stirring rods (6234) are arranged in a circle.

7. The device for adding powdered coal water slurry additive for preparing coal slurry with waste as claimed in claim 5, characterized in that: The dispersion rod (6231) is located in the flow inlet (6221) and is sleeved with a flow guide screw blade (6232) on the outer side of the rod wall.

8. The device for adding powdered coal water slurry additive for preparing coal slurry mixed with waste according to claim 1, characterized in that: The adding mechanism three (5) is used for adding chemical additives into the mixing tank (2). The adding mechanism three (5) comprises a feed tank (51) installed at the upper end of the mixing tank (2). The feed tank (51) is connected to a material guide pipe (52). The material guide pipe (52) is connected to a feed cover (53). The feed cover (53) is rotatably connected to the barrel mouth at the upper end of the rotating drum shell (61). The feed cover (53) is connected to a feed pipe three (54) extending into the bottom end of the rotating drum shell (61). The tube wall of the feed pipe three (54) is evenly distributed with a plurality of discharge holes (541). A discharge nozzle (55) is installed in the discharge hole (541). The discharge nozzle (55) comprises an elastic plug (551) fixed in the discharge hole (541). The elastic plug (551) is provided with a one-way conical discharge hole (552).

9. The device for adding powdered coal water slurry additive for preparing coal slurry with waste as claimed in claim 8, characterized in that: The circulating suction system (66) comprises a sealing plug disc (661) installed in the cylinder cavity at the upper end of the drum shell (61); the cylinder cavity of the drum shell (61) above the sealing plug disc (661) is configured as a negative pressure chamber (612); the cylinder cavity of the drum shell (61) below the sealing plug disc (661) is configured as a suction chamber (611); the sealing plug disc (661) is connected to the feed cover (53) via a spring (664); the negative pressure chamber (612) is configured as a negative pressure chamber (612); and the negative pressure chamber (611) is configured as a negative pressure chamber (612). 2) is connected to suction pipe 2 (666), suction pipe 2 (666) is connected to a negative pressure pump (665), the suction chamber (611) is connected to suction pipe 1 (663), suction pipe 1 (663) is connected to a suction pump (662), the output end of the suction pump (662) is introduced into the tank cavity of the mixing tank (2), and suction pipe 1 (663) passes through the sealing plug disk (661), and the sealing plug disk (661) can slide along the tube wall of suction pipe 1 (663).

10. The device for adding powdered coal water slurry additive for preparing coal slurry with waste as claimed in claim 9, characterized in that: A cover ring (56) is rotatably mounted on the lower end of the suction chamber (611), a blade ring (57) is mounted at the center of the cover ring (56), and a guide screw blade (58) is mounted at the lower end of the blade ring (57) and extends into the annular cavity between the rotating drum shell (61) and the feed pipe three (54).

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