Coal washing device for thermal power generation

Abstract

The invention relates to the technical field of thermal power plant equipment, in particular to a coal washing device for thermal power generation. The plurality of outer supports stacked in the vertical direction comprise a cylindrical shell and a hopper-shaped shell at the bottom of one side of the cylindrical shell, a feed port and a discharge port are formed in the top end and the bottom end of the cylindrical shell, and a feed hopper is in butt joint with the feed port in the top end; the rear end of the inner supporting column is fixed to the center of the rear wall of the inner cavity of the cylindrical shell. The rotary barrel is arranged outside the inner supporting column, and a plurality of strip-shaped grooves are formed in the barrel-shaped shell; the magnetic attraction assembly comprises a plate-shaped magnet inserted into the strip-shaped groove in a sliding mode, a connecting column fixed to the inner end of the plate-shaped magnet, a cambered surface column body fixed to the inner end of the connecting column and a spring arranged outside the connecting column in a sleeving mode. The scraping plate is tangent to the peripheral wall of the rotating cylinder; the stirring piece is arranged on one side, far away from the cambered surface bulge, of the inner cavity of the cylindrical shell; the impurity discharging pipeline is connected with the bottom end of the hopper-shaped shell; an output shaft of the driving motor sleeves a shaft sleeve at the front end of the rotating cylinder; and the thermal power generation coal washing device realizes efficient desulfurization treatment on coal.

Description

Technical Field

[0001] The invention relates to the technical field of thermal power plant equipment, in particular to a coal washing device for thermal power generation. Background Art

[0002] A thermal power plant is a plant that uses combustibles as fuel to produce electricity. A modern thermal power plant is a large and complex plant that produces electricity and heat energy and is mainly composed of five systems: fuel system, combustion system, steam-water system, electrical system and control system. At present, the main raw material used in domestic thermal power plants is coal. When coal is directly burned as a primary energy source, 90% of the sulfur in the coal is converted into SO2 and discharged into the atmosphere, causing great pressure on the environment. Therefore, thermal power plants often have to carry out a desulfurization coal washing process before coal combustion.

[0003] At present, magnetic separation desulfurization technology is widely used in the desulfurization process before coal combustion. However, when the commonly used magnetic separation desulfurization device magnetically screens the coal, the sulfur-containing magnetic substances such as pyrite cannot be discharged in a timely and efficient manner after being adsorbed by the magnet, and the coal treated by magnetic separation is not easy to be discharged efficiently, resulting in low coal washing efficiency. In addition, the sulfur-containing magnetic substances in the coal body are difficult to fully contact with the magnet, thus affecting the magnetic separation effect. Summary of the invention

[0004] The object of the present invention is to provide a coal washing device for thermal power generation, which is used to solve the problem that it is difficult for thermal power generation coal washing devices in the prior art to desulfurize coal efficiently.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coal washing device for thermal power generation, wherein a discharge hopper is provided in the middle of the top of the support platform; the outer support is vertically provided with a plurality of stacked forms, the outer support comprises a cylindrical shell and a bucket-shaped shell with a top end connected to the bottom of one side of the cylindrical shell, the top and bottom ends of the cylindrical shell are respectively provided with a feed port and a discharge port extending in the axial direction, and the adjacent feed ports and discharge ports are butted, and the middle part of the top and bottom ends of the inner cavity wall of the cylindrical shell close to the bucket-shaped shell is respectively provided with an arc-shaped protrusion in the axial direction; the bottom end of the feed hopper is butted against the feed port at the top; the rear end of the inner support column is fixed to the center of the rear wall of the inner cavity of the cylindrical shell; the rotating cylinder is arranged in the inner cavity of the cylindrical shell and is located outside the inner support column, and a shaft sleeve is fixed to the front end of the inner cavity of the rotating cylinder, and the cylindrical shell is circumferentially provided with a plurality of strip grooves extending in the axial direction respectively; the magnetic suction component comprises a sliding A plate-shaped magnet inserted in the strip groove, a plurality of connecting columns vertically fixed to the inner end surface of the plate-shaped magnet, an arc-shaped cylinder fixed to the inner end of the connecting column and extending axially, and a spring sleeved outside the connecting column and supported on the inner peripheral wall of the rotating cylinder; the top of the scraper is fixed on the arc-shaped protrusion at the top and the bottom is tangent to the outer peripheral wall of the rotating cylinder; a plurality of stirring members are respectively arranged in the inner cavity of the cylindrical shell and away from the side of the arc-shaped protrusion, and the stirring members extend axially respectively; the impurity discharge pipes are respectively connected to the bottom ends of the bucket-shaped shells; the driving motor is fixed to the middle of the front wall of the cylindrical shell and the power output shaft is fixedly sleeved on the shaft sleeve; the outer wall of the inner support column on the side close to the stirring member pushes the connecting column outward through the arc-shaped cylinder; the spring corresponding to the other side of the inner support column pushes the arc-shaped cylinder inward, so that the plate-shaped magnet is retracted into the strip groove.

[0006] Preferably, the stirring member includes a strip axially fixed to the inner circumferential wall of the cylindrical shell, an ear plate vertically fixed to the inner wall of the strip, a shaft rotatably sleeved on the ear plate, and a group of paddles radially fixed to the outer circumferential wall of the shaft.

[0007] Preferably, the bottom end surface of the bucket-shaped shell is connected to a pipe head, and the impurity discharge pipe includes a cylindrical seat, a vertical cylinder whose bottom end is fixed to the top surface of the cylindrical seat, a feed pipe whose bottom end is fixed to the side wall of the cylindrical seat and the top end is connected to the pipe head, and a discharge pipe whose top end is connected to the side wall of the bottom end of the vertical cylinder.

[0008] Preferably, the outer walls on both sides of the cylindrical shell are respectively fixedly connected with side frames, the top and bottom end surfaces of the side frames are respectively flush with the top surface of the feed port and the bottom surface of the discharge port, and the center of the front wall of the cylindrical shell is provided with an axial hole rotatably connected to the power output shaft of the drive motor.

[0009] Preferably, the support platform includes a platform and legs whose top ends are fixed to both sides of the bottom surface of the platform, a rectangular hole is provided in the middle of the platform, the top of the discharge hopper is fixed to the bottom surface of the platform at a position corresponding to the outer edge of the rectangular hole, the bottom of the side frame at the bottom end is fixedly connected to both sides of the top surface of the platform, and the discharge port of the cylindrical shell at the bottom end is connected to the rectangular hole.

[0010] Preferably, the side of the inner support column close to the stirring element is a semi-cylindrical structure, and the middle part of the other side of the inner support column is provided with an arc-shaped protrusion extending axially, and a connecting part is connected between the top and bottom ends of the arc-shaped protrusion and the outer peripheral wall of the semi-cylindrical structure.

[0011] Preferably, a prismatic disk is provided in the middle of the rear wall of the inner support column, and a polygonal groove which is fixedly sleeved and matched with the prismatic disk is provided in the middle of the rear wall of the inner cavity of the cylindrical shell.

[0012] Preferably, a plurality of slots are axially arranged at the bottom of the arc-surface cylinder, and rollers extending axially are rotatably mounted in the inner cavities of the slots.

[0013] Preferably, the plate-shaped magnet is a strontium ferrite magnetic material.

[0014] Preferably, the outer end of the plate-shaped magnet close to the stirring element is in a toggling relationship with the outer end of the paddle.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention relates to a coal washing device for thermal power generation, which can perform multi-stage rotary magnetic separation on coal in sequence vertically. The coal after magnetic separation is discharged downward in sequence under the action of gravity, avoiding the accumulation of coal after magnetic separation or mixing with coal before magnetic separation, thereby greatly improving the efficiency of magnetic separation desulfurization.

[0016] 2. The coal washing device for thermal power generation involved in the present invention can timely and thoroughly scrape and discharge the sulfur-containing magnetic substances adsorbed on the magnet; in addition, the coal can be fully contacted with the magnet through the stirring element to ensure the magnetic absorption rate of the coal, thereby ensuring the effect of magnetic separation and desulfurization of the coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention as a whole; Figure 2 It is a schematic diagram of the three-dimensional structure of the support platform of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the external support of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the inner support column of the present invention; Figure 5It is a schematic diagram of the three-dimensional structure of the rotating cylinder of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the magnetic attraction component of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the stirring element of the present invention.

[0018] In the figure: 1-support table; 1.1-platform; 1.1.1-rectangular hole; 1.2-legs; 1.3-discharge hopper; 2-external support; 2.1-cylindrical shell; 2.1.1-arc-surface protrusion; 2.1.2-feeding port; 2.1.3-discharging port; 2.1.4-axial hole; 2.2-side frame; 2.3-bucket-shaped shell; 2.4-tube head; 3- Feed hopper; 4-inner support column; 4.1-arc-shaped convex part; 4.2-connecting part; 4.3-prismatic disk; 5-rotating cylinder; 5.1-shaft sleeve; 5.2-strip groove; 6-magnetic attraction assembly; 6.1-plate magnet; 6.2-connecting column; 6.3-arc cylinder; 6.3.1-card slot; 6.4-spring; 6.5-roller; 7- Scraper; 8- stirring member; 8.1- lath; 8.2- ear plate; 8.3- shaft rod; 8.4- paddle; 9-discharge pipe; 9.1-cylindrical seat; 9.2-vertical cylinder; 9.3-feed pipe; 9.4-discharge pipe; 10- Driving motor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-7 The present invention provides a technical solution, a coal washing device for thermal power generation, wherein a discharge hopper 1.3 is provided in the middle of the top of a support platform 1; wherein the support platform 1 comprises a platform 1.1 and legs 1.2 whose top ends are fixed to both sides of the bottom surface of the platform 1.1, a rectangular hole 1.1.1 is provided in the middle of the platform 1.1, and the top end of the discharge hopper 1.3 is fixed to a position on the bottom surface of the platform 1.1 corresponding to the outer edge of the rectangular hole 1.1.1.

[0021] Multiple external supports 2 are stacked vertically, and the external supports 2 include a cylindrical shell 2.1 and a bucket-shaped shell 2.3 whose top end is connected to the bottom of one side of the cylindrical shell 2.1. The top and bottom ends of the cylindrical shell 2.1 are respectively provided with a feed port 2.1.2 and a discharge port 2.1.3 extending along the axial direction, and the adjacent feed ports 2.1.2 and discharge ports 2.1.3 are butted against each other. The middle part of the top and bottom ends of the inner cavity wall of the cylindrical shell 2.1 close to the bucket-shaped shell 2.3 is respectively provided with an arc-shaped protrusion 2.1.1 along the axial direction, and the inner side wall of the arc-shaped protrusion 2.1.1 is an arc-shaped concave structure. Multiple external supports 2 can be selected as needed, and adjacent external supports 2 are connected in series through the feed port 2.1.2 and the discharge port 2.1.3. In order to improve the support strength of the cylindrical shell 2.1, the outer walls on both sides of the cylindrical shell 2.1 are fixedly connected with side frames 2.2 respectively. The bottom of the side frame 2.2 at the bottom is fixedly connected to the two sides of the top surface of the platform 1.1, and the discharge port 2.1.3 of the cylindrical shell 2.1 at the bottom is docked with the rectangular hole 1.1.1, so that the crushed coal in the lowest end cylindrical shell 2.1 can be discharged from the discharge hopper 1.3 through the discharge port 2.1.3 and the rectangular hole 1.1.1 in time. The top and bottom end surfaces of the side frame 2.2 correspond to the top surface of the feed port 2.1.2 and the bottom surface of the discharge port 2.1.3 respectively, that is, when two adjacent external supports 2 are connected, the bottom end of the upper side frame 2.2 and the top end of the lower side frame 2.2 are sutured and connected with bolts. An axial hole 2.1.4 is provided in the center of the front wall of the cylindrical shell 2.1. The bottom end surface of the bucket-shaped shell 2.3 is connected with a pipe head 2.4.

[0022] The bottom end of the feed hopper 3 is connected to the feed port 2.1.2 at the top. That is, the crushed coal to be magnetically desulfurized is poured into the cylindrical shell 2.1 at the top through the feed hopper 3.

[0023] The rear end of the inner support column 4 is fixed to the center of the rear wall of the inner cavity of the cylindrical shell 2.1; wherein, the side of the inner support column 4 away from the arc surface protrusion 2.1.1 is a semi-cylindrical structure, and the middle part of the other side of the inner support column 4 is provided with an arc-shaped protrusion 4.1 extending along the axial direction, and a connecting part 4.2 is connected between the top and bottom ends of the arc-shaped protrusion 4.1 and the outer peripheral wall of the semi-cylindrical structure. The connecting part 4.2 is a structure with multiple convex and concave arc surfaces connected, which is used to achieve a transition connection between the outer peripheral wall of the semi-cylindrical structure and the top and bottom ends of the arc-shaped protrusion 4.1.

[0024] The rotating cylinder 5 is arranged in the inner cavity of the cylindrical shell 2.1 and is located outside the inner support column 4. A sleeve 5.1 is fixed to the front end of the inner cavity of the rotating cylinder 5. The cylindrical shell 2.1 is provided with a plurality of strip grooves 5.2 extending in the axial direction respectively along the circumferential direction.

[0025] The magnetic attraction assembly 6 comprises a plate-shaped magnet 6.1 slidably inserted into the strip groove 5.2, a plurality of connecting posts 6.2 vertically fixed to the inner end surface of the plate-shaped magnet 6.1, an arc-shaped cylinder 6.3 fixed to the inner end of the connecting post 6.2 and extending axially, and a spring 6.4 sleeved outside the connecting post 6.2 and supported at the outer end on the inner peripheral wall of the rotating cylinder 5. The plate-shaped magnet 6.1 is a strontium ferrite magnetic material.

[0026] The top end of the scraper 7 is fixed on the arc-shaped protrusion 2.1.1 at the top and the bottom end is tangent to the outer peripheral wall of the rotating cylinder 5.

[0027] A plurality of stirring members 8 are respectively arranged in the inner cavity of the cylindrical shell 2.1 and away from one side of the cambered protrusion 2.1.1, and the plurality of stirring members 8 are respectively extended in the axial direction. Among them, the stirring member 8 includes a slat 8.1 fixed to the inner peripheral wall of the cylindrical shell 2.1 in the axial direction, an ear plate 8.2 fixed vertically to the inner side wall of the slat 8.1, a shaft 8.3 rotatably sleeved on the ear plate 8.2, and a paddle 8.4 fixed in a group radially to the outer peripheral wall of the shaft 8.3. There is a paddle relationship between the outer end of the plate-shaped magnet 6.1 close to one side of the stirring member 8 and the outer end of the paddle 8.4. That is, the plate-shaped magnet 6.1 rotating with the rotating cylinder 5 can paddle the paddle 8.4, so that the shaft 8.3 rotates, thereby realizing the stirring and flipping of the crushed coal in the cylindrical shell 2.1, so as to ensure that the sulfur-containing magnetic material in the crushed coal can fully contact with the plate-shaped magnet 6.1, so as to improve the magnetic attraction efficiency of the plate-shaped magnet 6.1 to the sulfur-containing magnetic material.

[0028] The impurity discharge pipe 9 is respectively connected to the bottom end of the bucket-shaped shell 2.3; wherein, the impurity discharge pipe 9 includes a cylindrical seat 9.1, a vertical cylinder 9.2 whose bottom end is fixed to the top surface of the cylindrical seat 9.1, a feed pipe 9.3 whose bottom end is fixed to the side wall of the cylindrical seat 9.1 and whose top end is connected to the pipe head 2.4, and a discharge pipe 9.4 whose top end is connected to the side wall of the bottom end of the vertical cylinder 9.2.

[0029] The driving motor 10 is fixed to the middle of the front wall of the cylindrical housing 2.1 and the power output shaft is fixedly sleeved on the shaft sleeve 5.1.

[0030] In summary, when in use, the crushed coal is conveyed to the feed hopper 3 by the conveying equipment, and the crushed coal first enters the top cylindrical shell 2.1 through the feed hopper 3 and the feed port 2.1.2. The driving motor 10 drives the rotating cylinder 5 to rotate through the shaft sleeve 5.1, and the rotating cylinder 5 drives the multiple magnetic suction components 6 to rotate as a whole through the plate-shaped magnet 6.1. The outer wall of the inner support column 4 on the side close to the stirring element 8 pushes the connecting column 6.2 outwards through the arc cylinder 6.3, so that the crushed coal at the top of the inner cavity of the cylindrical shell 2.1 is always pushed in the direction of the stirring element 8, and the crushed coal is discharged downward in sequence along the side of the cylindrical shell 2.1 corresponding to the stirring element 8, and at the same time, the plate-shaped magnet 6.1 rotating to this side will push the paddle 8.4, so that the stirring element 8 can turn over and stir the crushed coal, so as to achieve full contact between the sulfur-containing magnetic substances in the crushed coal and the plate-shaped magnet 6.1, and the sulfur-containing magnetic substances are adsorbed on the surface of the plate-shaped magnet 6.1, and the plate-shaped magnet 6.1 continues to rotate with the rotating cylinder 5 After passing through the arc-shaped protrusion 2.1.1 at the bottom, the spring 6.4 corresponding to the connecting portion 4.2 and the side of the arc-shaped protrusion 4.1 pushes the arc-shaped cylinder 6.3 inward, so that the plate-shaped magnet 6.1 gradually retracts into the strip groove 5.2. In the process of retracting into the strip groove 5.2, the sulfur-containing magnetic material adsorbed on the outer surface of the plate-shaped magnet 6.1 will be scraped off by the edge of the outer end of the strip groove 5.2. A part of the scraped and fallen sulfur-containing magnetic material falls directly downward, and another part of the sulfur-containing magnetic material is adsorbed on the outer end surface of the plate-shaped magnet 6.1. When passing through the scraper 7, this part of the sulfur-containing magnetic material will also be scraped off and fall downward.

[0031] The sulfur-containing magnetic material falling downward passes through the bucket-shaped shell 2.3, the pipe head 2.4, the feed pipe 9.3 and the vertical cylinder 9.2 in sequence and is discharged from the discharge pipe 9.4.

[0032] The plate-shaped magnet 6.1 which continues to rotate with the rotating cylinder 5 will gradually extend out of the strip-shaped groove 5.2 after passing through the scraper 7.

[0033] By analogy, the crushed coal is subjected to a multi-stage magnetic separation and desulfurization process downward in sequence, and is finally discharged from the discharge port 2.1.3 at the bottom through the rectangular hole 1.1.1 and the discharge hopper 1.3.

[0034] A prismatic disc 4.3 is provided in the middle of the rear wall of the inner support column 4, and a polygonal groove which is fixedly sleeved and matched with the prismatic disc 4.3 is provided in the middle of the rear wall of the inner cavity of the cylindrical shell 2.1.

[0035] In order to reduce the friction between the arc-surface cylinder 6.3 and the outer peripheral wall of the inner support column 4, a plurality of slots 6.3.1 are provided in the axial direction at the bottom of the arc-surface cylinder 6.3, and rollers 6.5 extending in the axial direction are rotatably installed in the inner cavity of the slots 6.3.1, that is, the rollers 6.5 are always supported on the outer peripheral wall of the inner support column 4, and rolling friction replaces sliding friction, thereby greatly reducing the resistance of the rotating cylinder 5 to rotation.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal washing device for thermal power generation, characterized in that: include: A support platform (1), wherein a discharge hopper (1.3) is provided in the middle of the top of the support platform (1); An outer support (2), wherein a plurality of the outer supports (2) are stacked vertically, the outer support (2) comprising a cylindrical shell (2.1) and a bucket-shaped shell (2.3) whose top end is connected to the bottom of one side of the cylindrical shell (2.1), the top and bottom ends of the cylindrical shell (2.1) are respectively provided with a feed port (2.1.2) and a discharge port (2.1.3) extending in the axial direction, the adjacent feed ports (2.1.2) and discharge ports (2.1.3) are butt-jointed, and a curved protrusion (2.1.1) is respectively provided in the axial direction on one side of the middle of the top and bottom ends of the inner cavity wall of the cylindrical shell (2.1) close to the bucket-shaped shell (2.3); A feed hopper (3), the bottom end of the feed hopper (3) being connected to the feed opening (2.1.2) at the top end; An inner support column (4), the rear end of the inner support column (4) being fixed to the center of the rear wall of the inner cavity of the cylindrical shell (2.1); A rotating cylinder (5), the rotating cylinder (5) being arranged in the inner cavity of the cylindrical shell (2.1) and located outside the inner support column (4), a shaft sleeve (5.1) being fixed at the front end of the inner cavity of the rotating cylinder (5), and the cylindrical shell (2.1) being provided with a plurality of strip grooves (5.2) extending in the axial direction respectively along the circumferential direction; A magnetic attraction component (6), the magnetic attraction component (6) comprising a plate-shaped magnet (6.1) slidably inserted into the strip-shaped groove (5.2), a plurality of connecting columns (6.2) vertically fixed to the inner end surface of the plate-shaped magnet (6.1), an arc-surface cylinder (6.3) fixed to the inner end of the connecting column (6.2) and extending axially, and a spring (6.4) sleeved on the outside of the connecting column (6.2) and with its outer end supported on the inner peripheral wall of the rotating cylinder (5); A scraper (7), the top end of the scraper (7) being fixed to the arc-shaped protrusion (2.1.1) at the top and the bottom end of the scraper (7) being tangent to the outer peripheral wall of the rotating cylinder (5); A stirring member (8), wherein a plurality of the stirring members (8) are respectively arranged in the inner cavity of the cylindrical shell (2.1) and on a side away from the arc-surface protrusion (2.1.1), and the stirring members (8) respectively extend in the axial direction; impurity discharge pipes (9), the impurity discharge pipes (9) being respectively connected to the bottom ends of the bucket-shaped shells (2.3); A drive motor (10), the drive motor (10) being fixed to the middle of the front wall of the cylindrical housing (2.1) and the power output shaft being fixedly sleeved on the shaft sleeve (5.1); The outer wall of one side of the inner support column (4) close to the stirring element (8) pushes the connecting column (6.2) outwards through the arc-surface column (6.3); the spring (6.4) corresponding to the other side of the inner support column (4) pushes the arc-surface column (6.3) inwards, so that the plate-shaped magnet (6.1) is retracted into the strip-shaped groove (5.2).

2. A coal washing device for thermal power generation according to claim 1, characterized in that: The stirring member (8) comprises a strip (8.1) fixed axially to the inner peripheral wall of the cylindrical shell (2.1), an ear plate (8.2) fixed vertically to the inner side wall of the strip (8.1), a shaft (8.3) rotatably sleeved on the ear plate (8.2), and a group of paddles (8.4) fixed radially to the outer peripheral wall of the shaft (8.3).

3. A coal washing device for thermal power generation according to claim 1, characterized in that: The bottom end surface of the bucket-shaped shell (2.3) is connected to a pipe head (2.4), and the impurity discharge pipe (9) comprises a cylindrical seat (9.1), a vertical tube (9.2) whose bottom end is fixed to the top surface of the cylindrical seat (9.1), a feed pipe (9.3) whose bottom end is fixed to the side wall of the cylindrical seat (9.1) and whose top end is connected to the pipe head (2.4), and a discharge pipe (9.4) whose top end is connected to the side wall of the bottom end of the vertical tube (9.2).

4. A coal washing device for thermal power generation according to claim 1, characterized in that: The outer walls on both sides of the cylindrical shell (2.1) are respectively fixedly connected to side frames (2.2), the top and bottom end surfaces of the side frames (2.2) are respectively flush with the top surface of the feed port (2.1.2) and the bottom surface of the discharge port (2.1.3), and the center of the front wall of the cylindrical shell (2.1) is provided with an axial hole (2.1.4) rotatably sleeved with the power output shaft of the drive motor (10).

5. A coal washing device for thermal power generation according to claim 4, characterized in that: The support platform (1) comprises a platform (1.1) and legs (1.2) whose top ends are fixed to both sides of the bottom surface of the platform (1.1); a rectangular hole (1.1.1) is provided in the middle of the platform (1.1); the top end of the discharge hopper (1.3) is fixed to a position on the bottom surface of the platform (1.1) corresponding to the outer edge of the rectangular hole (1.1.1); the bottom of the side frame (2.2) at the bottom end is fixedly connected to both sides of the top surface of the platform (1.1); and the discharge port (1.1) of the cylindrical shell (2.1) at the bottom end is 2.1.3) is butted with the rectangular hole (1.1.1).

6. A coal washing device for thermal power generation according to claim 1, characterized in that: The side of the inner support column (4) close to the stirring element (8) is a semi-cylindrical structure, and the middle part of the other side of the inner support column (4) is provided with an arc-shaped convex portion (4.1) extending in the axial direction, and a connecting portion (4.2) is connected between the top and bottom ends of the arc-shaped convex portion (4.1) and the outer peripheral wall of the semi-cylindrical structure.

7. A coal washing device for thermal power generation according to claim 1, characterized in that: A prismatic disc (4.3) is provided in the middle of the rear wall of the inner support column (4), and a polygonal groove that is fixedly sleeved and matched with the prismatic disc (4.3) is provided in the middle of the rear wall of the inner cavity of the cylindrical shell (2.1).

8. A coal washing device for thermal power generation according to claim 1, characterized in that: The bottom of the arc-surface cylinder (6.3) is provided with a plurality of slots (6.3.1) along the axial direction, and roller shafts (6.5) extending along the axial direction are rotatably mounted in the inner cavities of the slots (6.3.1).

9. A coal washing device for thermal power generation according to claim 4, characterized in that: The plate-shaped magnet (6.1) is made of strontium ferrite magnetic material.

10. A coal washing device for thermal power generation according to claim 2, characterized in that: An outer end of the plate-shaped magnet (6.1) close to the side of the stirring member (8) is in a toggling relationship with an outer end of the paddle (8.4).

Images