Coal water slurry grading equipment

Abstract

The utility model discloses coal water slurry grading equipment which comprises a tank body and a tank cover, the tank body comprises a straight cylinder section and a conical cylinder section, a stirring mechanism is rotatably installed on the tank cover and comprises a stirring shaft and a stirring paddle, and a first conical filter plate and a second conical filter plate are sequentially fixed in the straight cylinder section from top to bottom. One side wall of the straight cylinder section is provided with a feed port between the first conical filter plate and the second conical filter plate, the other side wall of the straight cylinder section is respectively and correspondingly provided with a first discharge port and a second discharge port close to the lower edges of the first conical filter plate and the second conical filter plate, and the bottom end of the conical cylinder section is provided with a third discharge port; the stirring shaft downwards penetrates through the first conical filter plate and the second conical filter plate in sequence and then extends into the conical barrel section, and the stirring paddle is fixedly connected to the stirring shaft between the first conical filter plate and the second conical filter plate. According to the utility model, the coal water slurry containing particles with different particle sizes can be effectively separated, so that the effective classification of the coal water slurry is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of water-coal slurry classification, in particular to water-coal slurry classification equipment. Background Art

[0002] Coal-water slurry is a low-pollution, high-efficiency, pipeline-transportable coal-based fluid fuel that replaces oil and is obtained through physical processing of about 65% coal, 34% water and 1% additives. It is usually necessary to classify the coal-water slurry in order to optimize the particle size distribution of the coal slurry, improve the stacking efficiency and stability of the coal slurry, and thus improve its fluidity and combustion efficiency. Usually, the coal-water slurry is settled in the sedimentation tank by gravity, that is, the coal slurry is graded according to the size and density of the particles. However, this physical sedimentation method is obviously inefficient.

[0003] In order to solve the above problems, a Chinese utility model patent with publication number CN219194892U proposes a water-coal slurry classification device. From the technical solution disclosed therein, it can be seen that the classification device mainly includes a classification tank, in which a filtering assembly for grading and filtering the water-coal slurry is arranged, and a discharge assembly is arranged at the bottom of the classification tank; the classification tank includes a straight cylinder section and a conical cylinder section, the filtering assembly is arranged at the top of the straight cylinder section, and the discharge assembly is connected to the bottom of the conical cylinder section. Although the above-mentioned prior art solution classifies the water-coal slurry through the classification tank, it can separate and form coal slurries of different particle sizes to improve the utilization efficiency of the water-coal slurry material.

[0004] However, when the above-mentioned classification device is used to classify the water-coal slurry, some particles in the water-coal slurry will agglomerate together, and the agglomerates often contain particles of various sizes, which interferes with the classification process and makes it difficult to effectively separate according to the predetermined particle size range. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects and shortcomings of the prior art and to provide a water-coal slurry classification device so that the water-coal slurry containing particles of different particle sizes can be effectively separated to achieve effective classification of the water-coal slurry.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A water-coal slurry classification device comprises a tank body and a tank cover, wherein the tank body comprises a straight cylinder section and a conical cylinder section, a stirring mechanism is rotatably mounted on the tank cover, and the stirring mechanism comprises a stirring shaft and a stirring paddle, and the device is characterized in that: a first conical filter plate and a second conical filter plate are fixed in sequence from top to bottom inside the straight cylinder section, which are used to filter out water-coal slurry with small particles and water-coal slurry with medium particles respectively, and a feed port is provided on one side wall of the straight cylinder section between the first conical filter plate and the second conical filter plate, which is used to pass the water-coal slurry to be classified On the other side wall of the straight cylinder section, a first discharge port and a second discharge port are respectively provided at positions close to the lower edges of the first conical filter plate and the second conical filter plate, for respectively discharging small-particle water-coal slurry and large-particle water-coal slurry. A third discharge port is provided at the bottom end of the conical cylinder section for discharging medium-particle water-coal slurry. The stirring shaft passes through the first conical filter plate and the second conical filter plate downward in sequence and then extends into the conical cylinder section. The stirring paddle is fixedly connected to the stirring shaft between the first conical filter plate and the second conical filter plate.

[0008] Furthermore, the pore size of the filter holes of the first conical filter plate is smaller than that of the filter holes of the second conical filter plate. The first conical filter plate only allows small-particle water-coal slurry to pass through, and the second conical filter plate only allows medium-particle water-coal slurry to pass through.

[0009] Furthermore, two herringbone scrapers are fixedly connected to the stirring shaft, and the two herringbone scrapers are respectively and correspondingly attached to the upper surfaces of the first conical filter plate and the second conical filter plate.

[0010] Furthermore, two supporting rings are fixedly connected to the inner wall of the straight tube section, and each supporting ring is provided with a plurality of slots along its circumference. The lower edges of the first conical filter plate and the second conical filter plate are fixedly connected with a plurality of blocks corresponding to the plurality of slots along their circumference.

[0011] Furthermore, a V-shaped scraper is fixedly connected to the bottom of the stirring shaft, and the V-shaped scraper is close to the inner wall of the cone section.

[0012] Furthermore, the tank cover is fixedly connected to a shock-absorbing bracket, a motor is fixedly mounted on the shock-absorbing bracket, and the output end of the motor is transmission-connected to the top end of the stirring shaft via a bevel gear pair.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model arranges a first conical filter plate and a second conical filter plate in a tank body, and arranges a stirring paddle between the first conical filter plate and the second conical filter plate, so as to break up the agglomerated particles in the water-coal slurry, so that the water-coal slurry is stratified. Then, the first conical filter plate and the second conical filter plate are used to filter out the water-coal slurry with small particles and the water-coal slurry with medium particles respectively, while the water-coal slurry with large particles is retained between the first conical filter plate and the second conical filter plate, and then discharged separately, so that the water-coal slurry containing particles of different particle sizes can be effectively separated, thereby realizing the effective classification of the water-coal slurry.

[0015] 2. The utility model connects two herringbone scrapers and a V-shaped scraper on the stirring shaft, which can respectively scrape off the upper surfaces of the first conical filter plate and the second conical filter plate and the accumulated materials on the inner wall of the cone section, thereby facilitating the rapid discharge of water-coal slurry containing particles of different particle sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the external structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0018] Figure 3 It is a schematic diagram of the structure of two filters in the utility model.

[0019] Figure 4 It is a structural schematic diagram of the stirring mechanism in the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4A water-coal slurry classification device comprises a tank body and a tank cover 3, wherein the tank body comprises a straight cylinder section 1 and a conical cylinder section 2, a stirring mechanism is rotatably mounted on the tank cover 3, the stirring mechanism comprises a stirring shaft 4 and a stirring paddle 5, a first conical filter plate 6 and a second conical filter plate 7 are fixed in sequence from top to bottom inside the straight cylinder section 1, for filtering out water-coal slurry of small particle size and water-coal slurry of medium particle size respectively, a feed port 8 is arranged between the first conical filter plate 6 and the second conical filter plate 7 on one side wall of the straight cylinder section 1, for passing water-coal slurry to be classified, the straight cylinder section 1 On the other side wall, near the lower edges of the first conical filter plate 6 and the second conical filter plate 7, a first discharge port 9 and a second discharge port 10 are respectively provided for discharging small-particle water-coal slurry and large-particle water-coal slurry respectively. A third discharge port 11 is provided at the bottom end of the conical cylinder section 2 for discharging medium-particle water-coal slurry; the stirring shaft 4 passes through the first conical filter plate 6 and the second conical filter plate 7 downward in sequence and then extends into the conical cylinder section 2. The stirring paddle 5 is fixedly connected to the stirring shaft 4 between the first conical filter plate 6 and the second conical filter plate 7.

[0022] In the present invention, the pore size of the filter holes of the first conical filter plate 6 is smaller than that of the filter holes of the second conical filter plate 7. The first conical filter plate 6 only allows small-sized water-coal slurry to pass through, and the second conical filter plate 7 only allows medium-sized water-coal slurry to pass through.

[0023] In the utility model, two herringbone scrapers 12 are fixedly connected to the stirring shaft 4 , and the two herringbone scrapers 12 are respectively and correspondingly attached to the upper surfaces of the first conical filter plate 6 and the second conical filter plate 7 .

[0024] Therefore, as the stirring shaft 4 rotates, the two herringbone scrapers 12 rotate along the upper surfaces of the first conical filter plate 6 and the second conical filter plate 7 respectively, so as to scrape off the accumulated materials on the upper surfaces of the first conical filter plate 6 and the second conical filter plate 7.

[0025] In the utility model, two supporting rings 13 are fixedly connected to the inner wall of the straight cylinder section 1, and each supporting ring 13 is provided with four slots 14 along its circumference. The lower edges of the first conical filter plate 6 and the second conical filter plate 7 are respectively fixedly connected with four blocks 15 corresponding to the four slots 14 along their circumference, so that the first conical filter plate 6 and the second conical filter plate 7 are respectively fixedly connected to the two supporting rings 13.

[0026] In the utility model, a V-shaped scraper 16 is fixedly connected to the bottom of the stirring shaft 4 , and the V-shaped scraper 16 is close to the inner wall of the conical cylinder section 2 .

[0027] Therefore, as the stirring shaft 4 rotates, the V-shaped scraper 16 rotates along the inner wall of the conical cylinder section 2, so that the accumulated material on the inner wall of the conical cylinder section 2 can be scraped off.

[0028] In the utility model, the tank cover 3 is fixedly connected with a shock-absorbing bracket 17, and a motor 18 is fixedly installed on the shock-absorbing bracket 17. The output end of the motor 18 is connected to the top of the stirring shaft 4 through a bevel gear pair 19, so as to drive the stirring shaft 4 to rotate.

[0029] The utility model is further described below in conjunction with the accompanying drawings:

[0030] When in use, the water-coal slurry to be separated enters the straight cylinder section 1 between the first conical filter plate 6 and the second conical filter plate 7 through the feed port 8 .

[0031] The motor 18 starts to work, and drives the stirring shaft 4 to rotate through the bevel gear pair 19, and the stirring paddle 5 rotates accordingly, stirring the water-coal slurry, breaking up the agglomerated particles in the water-coal slurry, and causing the water-coal slurry to be stratified.

[0032] After stratification, the water-coal slurry containing small-sized particles in the upper layer enters the upper part of the straight cylinder section 1 through the first conical filter plate 6, and is finally discharged through the first discharge port 9; the water-coal slurry containing medium-sized particles in the lower layer enters the lower part of the straight cylinder section 1 through the second conical filter plate 7, and is finally discharged through the conical cylinder section 2 and the third discharge port 11; and the water-coal slurry containing large-sized particles is retained between the first conical filter plate 6 and the second conical filter plate 7, and is finally discharged through the second discharge port 10.

[0033] As the water-coal slurry is subsequently introduced, the motor 18 starts working again, driving the stirring shaft 4 and the stirring paddle 5 to rotate, stirring the water-coal slurry, breaking up the agglomerated particles in the water-coal slurry, and causing the water-coal slurry to be stratified.

[0034] In this process, as the stirring shaft 4 rotates, the two herringbone scrapers 12 rotate along the upper surfaces of the first conical filter plate 6 and the second conical filter plate 7 respectively, so as to scrape off the accumulated materials on the upper surfaces of the first conical filter plate 6 and the second conical filter plate 7. At the same time, the V-shaped scraper 16 rotates along the inner wall of the conical cylinder section 2, so as to scrape off the accumulated materials on the inner wall of the conical cylinder section 2.

[0035] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0036] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A water-coal slurry classification device, comprising a tank body and a tank cover, wherein the tank body comprises a straight cylinder section and a conical cylinder section, and a stirring mechanism is rotatably mounted on the tank cover, wherein the stirring mechanism comprises a stirring shaft and a stirring paddle, and wherein: A first conical filter plate and a second conical filter plate are fixed in sequence from top to bottom inside the straight cylinder section, which are used to filter out small-particle water-coal slurry and medium-particle water-coal slurry respectively. A feed port is provided on one side wall of the straight cylinder section between the first conical filter plate and the second conical filter plate for passing the water-coal slurry to be classified. A first discharge port and a second discharge port are provided on the other side wall of the straight cylinder section at positions close to the lower edges of the first conical filter plate and the second conical filter plate, which are used to discharge small-particle water-coal slurry and large-particle water-coal slurry respectively. A third discharge port is provided at the bottom end of the conical cylinder section for discharging medium-particle water-coal slurry; the stirring shaft passes through the first conical filter plate and the second conical filter plate in sequence downward and extends into the conical cylinder section, and the stirring paddle is fixedly connected to the stirring shaft between the first conical filter plate and the second conical filter plate.

2. A coal water slurry classification device according to claim 1, characterized in that: The pore size of the filter holes of the first conical filter plate is smaller than that of the filter holes of the second conical filter plate. The first conical filter plate only allows small-sized water-coal slurry to pass through, and the second conical filter plate only allows medium-sized water-coal slurry to pass through.

3. A coal water slurry classification device according to claim 1 or 2, characterized in that: Two herringbone scrapers are fixedly connected to the stirring shaft, and the two herringbone scrapers are respectively and correspondingly attached to the upper surfaces of the first conical filter plate and the second conical filter plate.

4. A coal water slurry classification device according to claim 1 or 2, characterized in that: Two supporting rings are fixedly connected to the inner wall of the straight cylinder section, each supporting ring is provided with a plurality of slots along its circumference, and the lower edges of the first conical filter plate and the second conical filter plate are fixedly connected with a plurality of blocks corresponding to the plurality of slots along their circumference.

5. The coal water slurry classification equipment according to claim 1, characterized in that: A V-shaped scraper is fixedly connected to the bottom of the stirring shaft, and the V-shaped scraper is close to the inner wall of the cone section.

6. A coal water slurry classification device according to claim 1, characterized in that: The tank cover is fixedly connected with a shock-absorbing bracket, and a motor is fixedly installed on the shock-absorbing bracket. The output end of the motor is connected with the top end of the stirring shaft through a bevel gear pair.

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