Coal-water mixture solid-liquid separation device

Abstract

This invention discloses a solid-liquid separation device for a coal-water mixture, relating to the field of coal-water mixture separation technology. The device includes a support base, with an mounting plate fixedly connected to its upper surface. A multi-stage separation mechanism for solid-liquid separation of the coal-water mixture is provided on the front end of the mounting plate. An extrusion mechanism for squeezing out water from the coal slime separated by the multi-stage separation mechanism is installed on the right side of the front end of the mounting plate. A guide plate for guiding the coal slime processed by the multi-stage separation mechanism into the extrusion mechanism is fixedly connected to the front end of the mounting plate. A reciprocating electric telescopic rod is hinged between the extrusion plate and the separation screen. A scraping component for scraping off coal slime adhering to the surface of the separation screen is provided between the pressure plate and the separation screen. This invention uses two separation screens with different mesh sizes to perform graded separation of the coal-water mixture, shortening the separation time and improving the separation effect.

Description

Technical Field

[0001] This invention relates to the field of coal-water mixture separation technology, specifically to a coal-water mixture solid-liquid separation device. Background Technology

[0002] Currently, mining enterprises all use hydraulic drilling for gas drainage drilling. During the hydraulic drilling process, a large amount of coal-water mixture is often generated due to the drilling pressure and the flow during the drilling process. The generation of coal-water mixture brings some problems and challenges to mining enterprises. For example, a large amount of coal-water mixture increases the moisture content of the coal, leading to difficulties in transportation and storage; the coal-water mixture causes the separation of water and coal, which requires separation and treatment to recover coal and treat wastewater. Therefore, mining enterprises treat the coal-water mixture by using a solid-liquid separation method, which not only treats the wastewater in the coal-water mixture but also recovers the coal slime in the coal-water mixture, thereby increasing the economic benefits of coal production for mining enterprises.

[0003] However, the current solid-liquid separation method for coal-water mixtures has the following drawbacks: coal-water mixtures are usually only subjected to primary screening and vibration separation. If the screen aperture is too large during primary screening, a large number of small coal slime particles will enter the wastewater without being collected, greatly reducing the amount of coal slime recovered. If the screen aperture is too small during primary screening, although both large and small particles can be recovered, the small screen aperture greatly increases the screening time and reduces work efficiency. At the same time, the coal slime recovered during the existing screening and vibration separation has too high a moisture content, which reduces the quality of coal slime recovery. Summary of the Invention

[0004] This invention provides a solid-liquid separation device for coal-water mixtures, which solves the technical problems of poor separation effect due to excessively large mesh size, excessively small mesh size increasing separation time and affecting separation efficiency in existing single-stage separation of coal-water mixtures, and the high water content of coal slime after vibration separation, which reduces the quality of coal slime recovery.

[0005] This invention provides a solid-liquid separation device for a coal-water mixture, comprising a support base, an mounting plate fixedly connected to the upper end face of the support base, a multi-stage separation mechanism for solid-liquid separation of the coal-water mixture provided on the front end face of the mounting plate, an extrusion mechanism for squeezing out water from the coal slime separated by the multi-stage separation mechanism mounted on the right side of the front end face of the mounting plate, and a guide plate fixedly connected to the front end face of the mounting plate for guiding the coal slime processed by the multi-stage separation mechanism into the extrusion mechanism. The multi-stage separation mechanism includes two separation mechanisms slidably connected vertically to the front end face of the mounting plate via sliding frames. A vibrating motor is installed on the screen plate and sliding frame. The mesh diameter of the upper separating screen plate is larger than that of the lower separating screen plate. A rack is symmetrically fixedly connected to the front and back of the upper end of the separating screen plate. A sliding frame is slidably connected to the outside of the rack. A gear that meshes with the rack is rotatably connected to the sliding frame. An extrusion plate is fixedly connected to the outside of the two gears. A reciprocating electric telescopic rod is hinged between the extrusion plate and the separating screen plate. A scraping component for scraping off the coal slime adhering to the surface of the separating screen plate is provided between the extrusion plate and the separating screen plate.

[0006] In one possible implementation, the extrusion mechanism includes a liquid collecting cylinder fixedly connected to the front end face of the mounting plate. An annular ring is fixedly connected to the inner wall of the liquid collecting cylinder via a fixing rod. A conical mesh cylinder is rotatably connected inside the annular ring. A shaft is rotatably connected inside the conical mesh cylinder via a horizontal plate. A conical spiral blade is fixedly connected to the outside of the shaft.

[0007] In one possible implementation, the scraping assembly includes a slide rod symmetrically fixed to the separation mesh plate via a fixing block. A spring telescopic column is slidably connected to the outside of the slide rod. Slide grooves are provided on both the front and rear sides of the extrusion plate. A slide column slidably disposed in the slide groove is fixedly connected to the outside of the spring telescopic column. A scraper is rotatably connected between the two spring telescopic columns. A counterweight block is fixedly connected to the upper part of the scraper.

[0008] In one possible implementation, the outer side of the separating mesh plate has several rectangular annular grooves equidistantly spaced from front to back. The left and right sides of each rectangular annular groove are rotatably connected to drive wheels via wheel plates. Two horizontally opposite drive wheels are connected to a drive belt for common transmission. Several paddles are fixedly connected to the outer side of the drive belt at equal intervals along its own path.

[0009] In one possible implementation, a liquid collection tank is fixedly connected to the upper end face of the support base directly below the separation screen plate. A return pipe is connected to the left side of the liquid collection tank. The upper end of the return pipe is located above the separation screen plate located below, and a pump body is provided outside the return pipe.

[0010] In one possible implementation, a feed hopper is fixedly connected to the front end face of the mounting plate and directly above the multi-stage separation mechanism, and a number of diverter plates are fixedly connected at equal intervals inside the feed hopper.

[0011] In one possible implementation, a rail groove is provided on the right end face of the rack, and a pulley is rotatably connected to the side of the slide frame near the rail groove, with the pulley slidably connected in the rail groove.

[0012] In one possible implementation, baffles are symmetrically fixedly connected to the front and rear of the upper end of the separating mesh plate.

[0013] As can be seen from the above technical solutions, the present invention has the following advantages:

[0014] In this invention, two types of separation mesh plates with different mesh sizes are arranged vertically and horizontally to achieve simultaneous separation of coal slurry of different particle sizes in a coal-water mixture, thereby shortening the separation time and improving the separation efficiency.

[0015] In this invention, the combination of rack, gear and extrusion plate enables the extrusion plate to rotate and move closer to the separation screen plate, thereby extruding the coal slime during the separation process, making it easier to squeeze out the water impurities in the coal slime, and improving the coal-water separation effect.

[0016] In this invention, the scraper in the scraping assembly moves to the right during its horizontal reciprocating motion, scooping into the coal slurry and pushing it to roll off the separating screen to the right. Then, the transmission belt drives the paddle to rotate continuously, further moving the coal slurry to the right from the separating screen, thereby ensuring that the separated coal slurry is removed from the separating screen in a timely manner and avoiding the accumulation of coal slurry.

[0017] In this invention, the gradually narrowing shape of the conical mesh cylinder causes the coal slurry to be continuously squeezed as the conical spiral blades rotate and move downwards. This squeezes out the water impurities in the coal slurry, making the water squeezed out more thoroughly, reducing the water content in the coal slurry, and improving the quality of coal slurry recycling. Furthermore, the centrifugal force of the rotating conical mesh cylinder can automatically and promptly throw away the squeezed water. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the solid-liquid separation device for coal-water mixture provided by the present invention.

[0020] Figure 2 This is a partial structural diagram of the multi-stage separation mechanism provided by the present invention.

[0021] Figure 3 Provided by the present invention Figure 2 An enlarged schematic diagram of part A of the structure.

[0022] Figure 4 This is a schematic diagram of the separation mesh plate structure provided by the present invention.

[0023] Figure 5 This is a schematic diagram of the transmission belt structure provided by the present invention.

[0024] Figure 6 This is a cross-sectional structural diagram of the extrusion mechanism provided by the present invention.

[0025] The above figures include the following reference numerals:

[0026] 1. Support seat; 2. Mounting plate; 3. Multi-stage separation mechanism; 31. Sliding frame; 32. Separation screen plate; 33. Rack; 34. Sliding frame; 35. Gear; 36. Extrusion plate; 37. Reciprocating electric telescopic rod; 38. Scraping assembly; 381. Sliding rod; 382. Spring telescopic column; 383. Slide groove; 384. Sliding column; 385. Scraper; 4. Extrusion mechanism; 41. Liquid collection cylinder; 42. Ring; 43. Conical screen cylinder; 44. Shaft; 45. Conical spiral blade; 5. Guide plate; 6. Rectangular annular groove; 7. Drive wheel; 8. Transmission belt; 9. Paddle; 10. Liquid collection tank; 11. Return pipe; 12. Feed hopper. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Please see Figure 1The present invention provides a technical solution: a coal-water mixture solid-liquid separation device, including a support base 1, an installation plate 2 fixedly connected to the upper end face of the support base 1, a multi-stage separation mechanism 3 for solid-liquid separation of the coal-water mixture is provided on the front end face of the installation plate 2, an extrusion mechanism 4 for squeezing out the water from the coal slurry separated by the multi-stage separation mechanism 3 is installed on the right side of the front end face of the installation plate 2, a guide plate 5 for guiding the coal slurry processed by the multi-stage separation mechanism 3 into the extrusion mechanism 4 is fixedly connected to the front end face of the installation plate 2, and a feed hopper 12 is fixedly connected to the front end face of the installation plate 2 and directly above the multi-stage separation mechanism 3, and a plurality of diverter plates are fixedly connected at equal intervals in the inner cavity of the feed hopper 12.

[0029] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment, the multi-stage separation mechanism 3 includes: two separation screen plates 32 that are slidably connected to the front end face of the mounting plate 2 via a sliding frame 31. Baffles are symmetrically fixed to the front and rear of the upper end face of the separation screen plates 32. These baffles block the coal separated by the separation screen plates 32, preventing it from flowing away from the front and rear of the separation screen plates 32. The separation screen plates 32 are arranged in an inclined shape, with the left side higher than the right side. A vibration motor is installed on the sliding frame 31. The mesh diameter of the upper separation screen plate 32 is larger than that of the lower separation screen plate 32. A rack 33 is symmetrically fixed to the front and rear of the upper end face of the separation screen plates 32. A sliding frame 34 is slidably connected to the outside of the rack 33. A gear 35 that meshes with the rack 33 is rotatably connected in the sliding frame 34. A rail groove is opened on the right end face of the rack 33. A rotating gear 35 is fitted into the side of the sliding frame 34 near the rail groove. The device is connected to a pulley, which is slidably connected in a rail groove. Two gears 35 are externally fixedly connected to a pressing plate 36. The pressing plate 36 and the separating screen plate 32 are hinged together by a reciprocating electric telescopic rod 37. A scraping assembly 38 for scraping off coal slime adhering to the surface of the separating screen plate 32 is provided between the pressing plate 36 and the separating screen plate 32. The scraping assembly 38 includes a slide rod 381 symmetrically fixed to the separating screen plate 32 by a fixing block. A spring telescopic column 382 is slidably connected to the outside of the slide rod 381. The pressing plate 36 has a sliding groove 383 on both the front and rear sides. A slide column 384 slidably disposed in the sliding groove 383 is fixedly connected to the outside of the spring telescopic column 382. A scraper 385 is rotatably connected between the two spring telescopic columns 382. A counterweight block is fixedly connected to the upper part of the scraper 385.

[0030] The coal-water mixture is fed into the feed hopper 12, where it is then divided into several streams by a diverter and flows into the multi-stage separation mechanism 3. The coal-water mixture from the feed hopper 12 flows onto the upper separation screen plate 32. The multi-stage separation mechanism 3 is then controlled to operate, with a vibrating motor driving the sliding frame 31 to vibrate, transmitting the vibration to the separation screen plate 32. The upper separation screen plate 32 performs primary separation of the coal-water mixture. The larger coal sludge particles separated gradually roll to the right under the vibration of the upper separation screen plate 32. Then, the reciprocating electric telescopic rod 37 drives the extrusion plate 36 to move. The extrusion plate 36 then drives the gear 35 to roll on the rack 33, causing the extrusion plate 36 to... 6 gradually moves towards the upper surface of the separating screen plate 32, squeezing the separated coal slime and squeezing out the water mixed in the coal slime. During the squeezing process, the chute 383 gradually tilts as the squeezing plate 36 moves, thereby squeezing the sliding column 384 to move to the left. The sliding column 384 then drives the scraper 385 to move to the left through the spring telescopic column 382. At this time, the scraper 385 moves on the surface of the coal slime. When the squeezing plate 36 rotates away from the separating screen plate 32, it will drive the sliding column 384 to move to the right, and then drive the scraper 385 to move to the right. At this time, under the pressure of the counterweight block, the scraper 385 scoops into the coal slime, and then pushes the coal slime to the right and falls onto the guide plate 5 as it moves to the right.

[0031] After being separated by the upper separation screen 32, the coal-water mixture flows downwards into the lower separation screen 32, where it undergoes a second separation. The coal slurry that has been separated then flows to the right under the vibration of the lower separation screen 32 and is dehydrated by the extrusion plate 36 before flowing into the corresponding guide plate 5.

[0032] This allows for multi-stage separation of coal-water mixtures, and the separate multi-stage separation method improves the separation effect while shortening the separation time.

[0033] Please see Figure 4 and Figure 5 In this embodiment, the outer side of the separating mesh plate 32 is provided with a number of rectangular annular grooves 6 at equal intervals from front to back. The left and right sides of the rectangular annular grooves 6 are connected to drive wheels 7 through wheel plates. The two horizontally opposite drive wheels 7 are connected to a transmission belt 8 for transmission. The transmission belt 8 is fixedly connected to a number of paddles 9 at equal intervals along its own path. The scraper 385 is provided with a number of through slots at equal intervals for the paddles 9 to pass through.

[0034] While the separating screen plate 32 vibrates, the drive wheel 7 is controlled to rotate. The drive wheel 7 then drives the transmission belt 8 to rotate, and the transmission belt 8 then drives the paddle 9 to move synchronously. During the movement of the paddle 9, the separated coal slime is further and timely removed from the separating screen plate 32 to prevent the coal slime from adhering to and remaining on the separating screen plate 32.

[0035] Please see Figure 1 In this embodiment, a liquid collection tank 10 is fixedly connected to the upper end face of the support seat 1 directly below the separation screen plate 32. A return pipe 11 is connected to the left side of the liquid collection tank 10. The upper end of the return pipe 11 is located above the separation screen plate 32 located below. A pump body is provided outside the return pipe 11.

[0036] The water separated in the second stage enters the collection tank 10. Then, after a period of time, the water is pumped into the return pipe 11 by controlling the operation of the pump body. Finally, it flows back into the separation screen plate 32 located at the bottom for a second coal-water separation process, making the separation more thorough. Finally, the water after the second separation is transferred.

[0037] Please see Figure 1 and Figure 6 In this embodiment, the extrusion mechanism 4 includes a liquid collecting cylinder 41 fixedly connected to the front end face of the mounting plate 2. The inner wall of the liquid collecting cylinder 41 is fixedly connected to a ring 42 by a fixing rod. A conical mesh cylinder 43 is rotatably connected inside the ring 42. A shaft 44 is rotatably connected inside the conical mesh cylinder 43 by a horizontal plate. A conical spiral blade 45 is fixedly connected to the outside of the shaft 44.

[0038] After the coal slurry separated by the two separating screen plates 32 enters the guide plate 5, the inclined surface of the guide plate 5 guides the coal slurry into the conical screen cylinder 43. Then, the external drive device one drives the shaft 44 to rotate, which in turn drives the conical spiral blades 45 to rotate. The rotation of the conical spiral blades 45 causes the coal slurry to move downward. As the lower part of the conical screen cylinder 43 gradually narrows, the coal slurry is squeezed during its downward movement, squeezing out the water impurities in the coal slurry. At the same time, the external drive device two drives the conical screen cylinder 43 to rotate. During the rotation of the conical screen cylinder 43, the water squeezed out by the centrifugal force is thrown outward and into the collection cylinder 41, reducing the water content in the separated coal slurry and improving the quality of the separated coal slurry.

[0039] During operation, the coal-water mixture is fed into the feed hopper 12 and then flows into the multi-stage separation mechanism 3. The coal-water mixture is separated in multiple stages by two separation screen plates 32 with different mesh sizes. The separated coal-water mixture then flows back into the lower separation screen plate 32 through the pump body and return pipe 11 for secondary separation. The separated coal slurry enters the extrusion mechanism 4 under the action of the guide plate 5 to squeeze out the water impurities in the coal slurry.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A coal-water mixture solid-liquid separation device, comprising a support base (1), characterized in that: The upper end face of the bearing seat (1) is fixedly connected to the mounting plate (2). The front end face of the mounting plate (2) is provided with a multi-stage separation mechanism (3) for solid-liquid separation of coal-water mixture. The right side of the front end face of the mounting plate (2) is equipped with an extrusion mechanism (4) for squeezing out the water from the coal slurry separated by the multi-stage separation mechanism (3). The front end face of the mounting plate (2) is fixedly connected to a guide plate (5) for guiding the coal slurry processed by the multi-stage separation mechanism (3) into the extrusion mechanism (4). The multi-stage separation mechanism (3) includes: Two separation mesh plates (32) are slidably connected to the front end of the mounting plate (2) via a sliding frame (31). A vibration motor is installed on the sliding frame (31). The mesh aperture of the upper separation mesh plate (32) is larger than that of the lower separation mesh plate (32). A rack (33) is symmetrically fixedly connected to the front and back of the upper end of the separation mesh plate (32). A sliding frame (34) is slidably connected to the outside of the rack (33). A gear (35) that meshes with the rack (33) is rotatably connected in the sliding frame (34). An extrusion plate (36) is fixedly connected to the outside of the two gears (35). A reciprocating electric telescopic rod (37) is hinged between the extrusion plate (36) and the separation mesh plate (32). A scraping assembly (38) for scraping off coal slime adhering to the surface of the separation mesh plate (32) is provided between the extrusion plate (36) and the separation mesh plate (32).

2. The coal-water mixture solid-liquid separation device according to claim 1, characterized in that: The extrusion mechanism (4) includes a liquid collecting cylinder (41) fixedly connected to the front end face of the mounting plate (2). The inner wall of the liquid collecting cylinder (41) is fixedly connected to a ring (42) by a fixing rod. A conical mesh cylinder (43) is rotatably connected inside the ring (42). A shaft (44) is rotatably connected inside the conical mesh cylinder (43) by a horizontal plate. A conical spiral blade (45) is fixedly connected to the outside of the shaft (44).

3. The coal-water mixture solid-liquid separation device according to claim 1, characterized in that: The scraping assembly (38) includes a slide rod (381) symmetrically fixed to the separation mesh plate (32) by a fixing block. A spring telescopic column (382) is slidably connected to the outside of the slide rod (381). The front and rear sides of the extrusion plate (36) are provided with a sliding groove (383). A slide column (384) is fixedly connected to the outside of the spring telescopic column (382) and slidably disposed in the sliding groove (383). A scraper (385) is rotatably connected between the two spring telescopic columns (382). A counterweight block is fixedly connected to the upper part of the scraper (385).

4. The coal-water mixture solid-liquid separation device according to claim 1, characterized in that: The separation mesh plate (32) has several rectangular annular grooves (6) evenly spaced from front to back on its exterior. The left and right sides of the rectangular annular grooves (6) are connected to drive wheels (7) through wheel plates. The two horizontally opposite drive wheels (7) are connected to a transmission belt (8) for transmission. Several paddles (9) are fixedly connected to the transmission belt (8) at equal intervals along its own path on its exterior.

5. The coal-water mixture solid-liquid separation device according to claim 1, characterized in that: The upper end face of the support seat (1) is fixedly connected to the liquid collection tank (10) directly below the separation screen plate (32). The left side of the liquid collection tank (10) is connected to the return pipe (11). The upper end of the return pipe (11) is located above the separation screen plate (32) located below. A pump body is provided outside the return pipe (11).

6. The coal-water mixture solid-liquid separation device according to claim 1, characterized in that: The front end of the mounting plate (2) and directly above the multi-stage separation mechanism (3) is fixedly connected to a feed hopper (12), and a number of diverter plates are fixedly connected at equal intervals in the inner cavity of the feed hopper (12).

7. The coal-water mixture solid-liquid separation device according to claim 1, characterized in that: The rack (33) has a rail groove on its right end face, and the slide frame (34) is rotatably connected to a pulley on the side near the rail groove. The pulley is slidably connected in the rail groove.

8. The coal-water mixture solid-liquid separation device according to claim 1, characterized in that: The upper end of the separation mesh plate (32) is symmetrically fixed with baffles.

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