High-efficiency solid-liquid concentrator for coal slime water

Abstract

This invention discloses a high-efficiency solid-liquid thickener for coal slurry, belonging to the technical field of thickeners. It includes a main frame with an inlet pipe connected to its inner side. Multiple U-shaped outlet pipes are circumferentially distributed at the bottom of the inlet pipe. A support plate is provided below the main frame, and a linkage lifting rod connects each L-shaped plate to the support plate. Multiple stepped settling components that cooperate with the U-shaped outlet pipes are circumferentially distributed on the support plate. In this invention, coal slurry is horizontally sprayed from the U-shaped outlet pipes at the bottom of the inlet pipe, acting on the highest-positioned baffle, and then flowing into the corresponding thickening chamber. It can be injected sequentially into thickening chambers at different positions, preventing later-injected coal slurry from affecting the sedimentation and thickening of earlier-injected coal slurry, thereby improving the overall sedimentation and thickening efficiency and effectively completing solid-liquid separation.

Description

Technical Field

[0001] This invention relates to the field of thickener technology, and more specifically to a high-efficiency solid-liquid thickener for coal slurry water. Background Technology

[0002] Thickeners are equipment used in coal preparation plants to treat tailings coal slurry in coal slurry water systems. They are mainly used for flocculation and natural sedimentation of coal slurry water. By utilizing the principle of gravity sedimentation, solid coal slurry and water in coal slurry water are separated into solid and liquid components, creating conditions for the reuse of circulating water in the system.

[0003] Chinese Patent Publication No. CN217593913U, entitled "A Coal Slurry Thickener," includes a base and a settling body mounted on the base. The settling body is provided with an overflow trough, and a flow stabilizing tank is provided at the center of the settling body. The flow stabilizing tank is provided with several discharge ports. A flow stabilizing plate is provided on the inner wall of the settling body, and several flow stabilizing plates are evenly arranged around the central axis of the settling body. This scheme relies on the flow stabilizing tank to introduce coal slurry into the settling body to complete the settling and thickening process.

[0004] The shortcomings of the above-mentioned existing technical solutions are as follows: Although the above solutions spray coal slurry water horizontally from the discharge port at the bottom of the stabilizing tank, allowing the coal slurry water to flow along the side wall of the settling body, the internal space of the settling body is singular. The continuously injected coal slurry water will impact the already injected coal slurry water, making it impossible to separate the space where the injected coal slurry water is located. This can easily cause the coal slurry water in the settling and thickening process to be affected and interfered with, thus affecting the settling and thickening efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency solid-liquid thickener for coal slurry water, so as to solve the technical problem that existing coal slurry water thickeners cannot efficiently complete sedimentation and concentration treatment.

[0006] The technical problem to be solved by this invention can be achieved through the following technical solution:

[0007] A high-efficiency solid-liquid thickener for coal slurry includes a main frame, a support base connected to the bottom of the main frame, and a liquid inlet pipe connected to the inner side of the main frame.

[0008] The bottom of the inlet pipe has multiple U-shaped outlet pipes distributed circumferentially; the bottom side wall of the inlet pipe has multiple vertical sliding cavities circumferentially opened; the bottom of the inlet pipe also has multiple L-shaped plates circumferentially distributed, one end of the L-shaped plate is slidably connected to the corresponding vertical sliding cavity, and the other end is engaged with the corresponding U-shaped outlet pipe.

[0009] A tray is provided below the main frame. Each L-shaped plate is connected to the tray by a linkage lifting rod. Multiple stepped sedimentation components that cooperate with U-shaped liquid outlet pipes are distributed circumferentially on the tray. Each stepped sedimentation component includes a partition baffle. Multiple partition baffles are provided and are distributed laterally at equal intervals on the tray. The height of the partition baffles decreases sequentially along the direction close to the liquid inlet pipe. A concentration chamber is provided between adjacent partition baffles.

[0010] An electric telescopic rod assembly is connected between the pallet and the main frame. Each of the partitions is equipped with a liquid level sensing switch on one side that is electrically connected to the electric telescopic rod assembly.

[0011] As a further aspect of the present invention: the electric telescopic rod assembly includes multiple electric telescopic components, which are connected in sequence. One side of the electric telescopic rod assembly is connected to the main frame, and the other side is connected to the tray. The liquid level sensing switch is electrically connected to the corresponding electric telescopic component.

[0012] As a further aspect of the present invention: an annular sealing frame that cooperates with the U-shaped outlet pipe is sleeved on the outside of the inlet pipe, a first sliding groove is vertically opened on the inner wall of the main frame, and the annular sealing frame is slidably connected to the first sliding groove, and a hanging mechanism is provided between the annular sealing frame and the main frame.

[0013] As a further embodiment of the present invention: the hanging mechanism includes a sliding block and a protrusion, the protrusion is connected to the top of the annular sealing frame, a second sliding groove is provided on the inner wall of the main frame, the sliding block is slidably connected to the second sliding groove, and the sliding block is positioned below the protrusion; a linkage mechanism is provided between the sliding block and the linkage lifting rod.

[0014] As a further embodiment of the present invention: the linkage mechanism includes an inclined pressure block and a top ball, the inclined pressure block is connected to the sliding stop block, the top ball is connected to the linkage lifting rod, and the top ball is aligned with the inclined surface of the inclined pressure block.

[0015] As a further aspect of the present invention: both the partition and the main frame are transparent structures.

[0016] As a further aspect of the present invention: each of the concentration chambers has a plurality of drainage holes spaced longitudinally at equal intervals on one side, and each drainage hole is equipped with a sealing plug.

[0017] As a further aspect of the present invention, a detachable base plate is connected to the tray by screws.

[0018] The beneficial effects of this invention are:

[0019] 1. When the coal slurry water of the present invention is injected at a constant pressure, it can be sprayed horizontally from the U-shaped outlet pipe at the bottom of the inlet pipe to the highest position of the dividing baffle, and then flow into the corresponding concentration chamber. After a certain amount is injected into the corresponding concentration chamber, the support plate lifts up with all the dividing baffles. During this process, the L-shaped plate on the U-shaped outlet pipe also rises simultaneously, which increases the port size of the U-shaped outlet pipe. As a result, the range of the sprayed coal slurry water is reduced, which makes it easier to act on the next lower dividing baffle and flow into the corresponding concentration chamber. In this way, it can be injected into the concentration chambers at different positions in sequence, avoiding the coal slurry water injected later from affecting the sedimentation and concentration of the coal slurry water injected earlier, thereby improving the overall sedimentation and concentration efficiency and effectively completing solid-liquid separation.

[0020] 2. The coal slurry water injected in this invention is sprayed out horizontally and impacts the partition baffle. It can flow down along the partition baffle, ensuring that the incoming coal slurry water has a significant impact on the sedimentation and concentration process of the already injected coal slurry water. At the same time, the impact force of the coal slurry water is different when it acts on the partition baffle at different positions, thereby avoiding excessive impact and diffusion.

[0021] 3. After the coal slurry water is filled into the concentration chambers at different positions in this invention, the pallet, along with the linkage lifting rod, rises to the highest position and acts in conjunction with the annular sealing frame, causing the annular sealing frame to unlock and fall, sealing the U-shaped liquid outlet pipe and preventing further injection of coal slurry water. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a top view schematic diagram of the connection between the partition baffle, the concentration chamber, and the tray in this invention;

[0025] Figure 3 This is a top view of the structure in which the annular sealing frame, the U-shaped outlet pipe, and the inlet pipe are connected in this invention.

[0026] Figure 4 This is a partial cross-sectional structural diagram of the L-shaped plate, U-shaped outlet pipe, and inlet pipe connected in this invention.

[0027] In the diagram: 1. Main frame; 2. Support base; 3. Tray; 4. Detachable base plate; 5. Linkage lifting rod; 6. Electric telescopic rod assembly; 7. Inlet pipe; 8. U-shaped outlet pipe; 9. L-shaped plate; 10. Top ball; 11. Inclined pressure block; 12. Second slide groove; 13. Sliding stop block; 14. Protrusion; 15. First slide groove; 16. Annular sealing frame; 17. Dividing baffle; 18. Concentration chamber; 19. Drain hole; 20. Liquid level sensor switch; 21. Vertical slide cavity. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-4 As shown, a high-efficiency solid-liquid thickener for coal slurry includes a main frame 1. A support base 2 is connected to the bottom of the main frame 1. An inlet pipe 7 is connected to the middle of the inner side of the main frame 1 via a rod. The inlet pipe 7 is used to connect to a conveying device for transporting coal slurry and to transport the coal slurry into the main frame 1. Multiple U-shaped outlet pipes 8 are distributed circumferentially at the bottom of the inlet pipe 7. The U-shaped outlet pipes 8 are used to make the coal slurry spray out horizontally in multiple streams. Multiple vertical sliding cavities 21 are opened circumferentially on the bottom side wall of the inlet pipe 7. Multiple L-shaped plates 9 are also distributed circumferentially at the bottom of the inlet pipe 7. One end of the L-shaped plate 9 is slidably connected to the corresponding vertical sliding cavity 21, and the other end is engaged with the corresponding U-shaped outlet pipe 8. The size of the outlet port of the corresponding U-shaped outlet pipe 8 can be changed by raising and lowering the L-shaped plate 9.

[0030] A support plate 3 is horizontally arranged below the main frame 1. Multiple stepped settling components that cooperate with the U-shaped liquid outlet pipe 8 are distributed circumferentially on the support plate 3. The stepped settling components include partition baffles 17. Multiple partition baffles 17 are arranged and are distributed horizontally at equal intervals on the support plate 3. The partition baffles 17 are distributed from the edge of the support plate 3 to the center. The height of the partition baffles 17 decreases sequentially from the edge of the support plate 3 to the center. That is, the height of the partition baffles 17 decreases sequentially along the direction close to the liquid inlet pipe 7. A concentration chamber 18 is formed between adjacent partition baffles 17. Since the height of the partition baffles 17 decreases sequentially in the horizontal direction, the depth of the concentration chamber 18 decreases sequentially. The concentration chamber 18 is used to catch the coal slurry water sprayed from the U-shaped liquid outlet pipe 8, so that the coal slurry water can settle and concentrate naturally by gravity, and achieve solid-liquid stratification. Flocculants can also be added to the concentration chamber 18 to facilitate the aggregation of coal slurry and promote sedimentation and concentration.

[0031] Both the partition baffle 17 and the main frame 1 are transparent structures, making it easy to observe the coal slurry water stratification.

[0032] Each concentration chamber 18 has multiple drainage holes 19 arranged longitudinally at equal intervals on one side, and each drainage hole 19 is equipped with a sealing plug. When the solid and liquid in the concentration chamber 18 are separated into layers, the drainage hole 19 corresponding to the layer position is opened to allow the upper layer of clear water after sedimentation and concentration to be discharged.

[0033] A removable bottom plate 4 is installed on the tray 3 by screws. The removable bottom plate 4 is the bottom of the concentration chamber 18. When it is necessary to remove the settled and concentrated coal slime, the removable bottom plate 4 is disassembled and separated, so that the removable bottom plate 4 is separated from the bottom of the tray 3, and the concentrated coal slime is on the removable bottom plate 4 and is separated together.

[0034] An electric telescopic rod assembly 6 is connected between the pallet 3 and the main frame 1. The electric telescopic rod assembly 6 includes multiple electric telescopic components, which are connected in sequence. One side of the electric telescopic component of the electric telescopic rod assembly 6 is connected to the main frame 1, and the other side is connected to the pallet 3. Each electric telescopic component distributed in the middle is connected to the telescopic end of the previous electric telescopic component. Each partition baffle 17 is equipped with a liquid level sensor switch 20 that is electrically connected to the electric telescopic rod assembly 6 on one side. The liquid level sensor switch 20 corresponds to the concentration chamber 18, and the liquid level sensor switch 20 is also electrically connected to the corresponding electric telescopic component. Coal slurry water is injected from the deepest concentration chamber 18 and fills each concentration chamber 18 in sequence. Whenever a concentration chamber 18 is injected with a corresponding amount, the corresponding liquid level sensor switch 20 is activated, causing the corresponding electric telescopic component to retract. This causes the pallet 3 to rise a certain distance along with all the concentration chambers 18.

[0035] Each L-shaped plate 9 is connected to the support plate 3 by a linkage lifting rod 5, which facilitates the synchronous lifting of the L-shaped plate 9 and the support plate 3.

[0036] When the coal slurry enters the inlet pipe 7 under a set constant pressure and begins to be injected, the support plate 3 is at its lowest position, and the outlet port formed between the U-shaped outlet pipe 8 and the corresponding L-shaped plate 9 is the smallest, smaller than the diameter of the inlet pipe 7. Due to the size limitation of the outlet port, the coal slurry sprayed laterally from the outlet port has the greatest impact force and the longest spray range, hitting the highest partition baffle 17. Then, it flows along the partition baffle 17 into the corresponding concentration chamber 18. Because it flows along the side wall of the partition baffle 17, it avoids the later-entering coal slurry directly impacting the earlier-entering coal slurry and affecting sedimentation and concentration. When the deepest concentration chamber 18 is filled with a certain amount, the liquid level sensor switch 20 at that position causes one of the corresponding electric telescopic components on the electric telescopic rod assembly 6 to retract. In this way, the support plate 3, along with all the partition baffles 17, rises a certain distance. During the lifting process of the pallet 3, the pallet 3 drives the L-shaped plate 9 to rise a certain distance through the linkage lifting rod 5. In this way, the liquid outlet formed between the L-shaped plate 9 and the U-shaped liquid outlet pipe 8 increases in size. At this time, the impact force of the coal slurry water is reduced, and the range of the liquid spray is reduced, so that it can act on the next lower position of the dividing baffle 17. Due to the reduced impact force, the coal slurry water impacting the dividing baffle 17 can be prevented from spreading and can flow into the corresponding concentration chamber 18. This is repeated, and the pallet 3 is gradually raised, so that the coal slurry water can be injected into the concentration chambers 18 at different positions in sequence. Since the concentration chambers 18 are separated from each other, there is no interference between them during the injection of coal slurry water. Therefore, after a certain amount of coal slurry water is injected into a concentration chamber 18, it can be directly concentrated and settled. The coal slurry water injected later cannot affect it, thus ensuring efficient solid-liquid stratification.

[0037] An annular sealing frame 16 that mates with a U-shaped outlet pipe 8 is fitted around the inlet pipe 7. A first sliding groove 15 is vertically opened on the inner wall of the main frame 1, and the annular sealing frame 16 is slidably connected to the first sliding groove 15 via a slide. The first sliding groove 15 facilitates the smooth up-and-down sliding of the annular sealing frame 16. A hanging mechanism is provided between the annular sealing frame 16 and the main frame 1. The hanging mechanism includes a sliding stop 13 and a protrusion 14. The protrusion 14 is connected to the top of the annular sealing frame 16. A second sliding groove 12 is horizontally opened on the inner wall of the main frame 1. The sliding stop 13 is slidably connected to the second sliding groove 12, and the sliding stop 13 is positioned below the protrusion 14. When it is necessary to lower the annular sealing frame 16, the sliding stop 13 can be moved laterally along the first sliding groove 15 to disengage from the protrusion 14.

[0038] A linkage mechanism is provided between the sliding stop 13 and the linkage lifting rod 5. The linkage mechanism includes an inclined pressure block 11 and a top ball 10. The inclined pressure block 11 is connected above the sliding stop 13 via a rod, and the top ball 10 is connected to the linkage lifting rod 5, with the top ball 10 aligned with the inclined surface of the inclined pressure block 11. The top ball 10 can rise synchronously with the linkage lifting rod 5. When the U-shaped liquid outlet pipe 8 injects coal slurry into the last concentration chamber 18, the top ball 10 rises to a position that fits against the inclined surface of the inclined pressure block 11. After the set amount of coal slurry water is obtained, the electric telescopic rod assembly 6 is triggered again by the liquid level sensor switch 20 to retract, thereby driving the pallet 3 and the linkage lifting rod 5 to rise. At this time, the top ball 10 squeezes the inclined surface of the inclined pressure block 11, so that the inclined pressure block 11 is subjected to the lateral component force. In this way, the inclined pressure block 11 drives the sliding stop 13 to move laterally along the second slide groove 12 and disengage from the protrusion 14. In this way, the annular sealing frame 16 slides down under the action of gravity and finally seals the port of the U-shaped liquid outlet pipe 8, thereby achieving the sealing and preventing excessive discharge of coal slurry water.

[0039] The working principle of this invention is as follows: First, coal slurry enters the inlet pipe 7 under a set constant pressure, and the electric telescopic rod assembly 6 is in an extended state. The support plate 3 is in its lowest position, and the size of the outlet port formed between the U-shaped outlet pipe 8 and the corresponding L-shaped plate 9 is minimized, smaller than the diameter of the inlet pipe 7. Due to the size limitation of the outlet port, the coal slurry sprayed laterally from the outlet port has the greatest impact force and the longest spray range, hitting the highest partition baffle 17. Then, it flows along the partition baffle 17 into the corresponding concentration chamber 18. Because it flows along the side wall of the partition baffle 17, it avoids the later-entering coal slurry directly impacting the earlier-entering coal slurry and affecting sedimentation and concentration. When the deepest concentration chamber 18 is filled with a certain amount, the liquid level sensor switch 20 at that position causes one of the corresponding electric telescopic components on the electric telescopic rod assembly 6 to retract. In this way, the support plate 3 carries all the coal slurry into the chamber. The partition baffle 17 rises a certain distance, and during the process of the support plate 3 rising, the support plate 3 drives the L-shaped plate 9 to rise a certain distance through the linkage lifting rod 5. In this way, the liquid outlet formed between the L-shaped plate 9 and the U-shaped liquid outlet pipe 8 increases in size. At this time, the impact force of the coal slurry water is reduced, and the range of the liquid spray is reduced, so that it can act on the next lower partition baffle 17. Due to the reduced impact force, the coal slurry water impacting the partition baffle 17 can be prevented from spreading and can flow into the corresponding concentration chamber 18. This process is repeated, and the support plate 3 rises step by step, so that the coal slurry water can be injected into the concentration chambers 18 at different positions in sequence. Since the concentration chambers 18 are separated from each other, there is no interference between them during the injection of coal slurry water. Therefore, after a certain amount of coal slurry water is injected into a concentration chamber 18, it can be directly concentrated and settled, and the subsequently injected coal slurry water cannot affect it.

[0040] When the U-shaped outlet pipe 8 injects coal slurry into the last concentration chamber 18, the top ball 10 rises to the position of adhering to the inclined surface of the inclined pressure block 11. After the last concentration chamber 18 is injected with a set amount of coal slurry, the electric telescopic rod assembly 6 is triggered again by the liquid level sensor switch 20 to retract, thereby driving the support plate 3 and the linkage lifting rod 5 to rise. At this time, the top ball 10 squeezes the inclined surface of the inclined pressure block 11, so that the inclined pressure block 11 is subjected to a lateral force. In this way, the inclined pressure block 11 drives the sliding stop 13 to move laterally along the second slide groove 12 and disengage from the protrusion 14. In this way, the annular sealing frame 16 slides down under the action of gravity and finally seals the port of the U-shaped outlet pipe 8, thereby achieving sealing and preventing excessive discharge of coal slurry.

[0041] After the solid-liquid separation is completed, the drain hole 19 corresponding to the separation position is opened to allow the upper layer of clear water after sedimentation and concentration to be discharged; then the detachable bottom plate 4 is disassembled and separated from the bottom of the support plate 3, and the concentrated coal slime on the detachable bottom plate 4 is separated together.

[0042] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A high-efficiency solid-liquid thickener for coal slurry, comprising a main frame (1), a support base (2) connected to the bottom of the main frame (1), and a liquid inlet pipe (7) connected to the inner side of the main frame (1); characterized in that: The bottom of the inlet pipe (7) is circumferentially distributed with multiple U-shaped outlet pipes (8); the bottom side wall of the inlet pipe (7) is circumferentially provided with multiple vertical sliding cavities (21); the bottom of the inlet pipe (7) is also circumferentially distributed with multiple L-shaped plates (9); one end of the L-shaped plate (9) is slidably connected to the corresponding vertical sliding cavity (21), and the other end is engaged with the corresponding U-shaped outlet pipe (8); A tray (3) is provided below the main frame (1). Each L-shaped plate (9) is connected to the tray (3) by a linkage lifting rod (5). Multiple stepped sedimentation components that cooperate with the U-shaped liquid outlet pipe (8) are distributed circumferentially on the tray (3). The stepped sedimentation components include partition baffles (17). Multiple partition baffles (17) are provided and are distributed equidistantly on the tray (3) laterally. The height of the partition baffles (17) decreases sequentially along the direction close to the liquid inlet pipe (7). A concentration chamber (18) is provided between adjacent partition baffles (17). An electric telescopic rod assembly (6) is connected between the pallet (3) and the main frame (1), and a liquid level sensing switch (20) that is electrically connected to the electric telescopic rod assembly (6) is provided on one side of each of the partitions (17).

2. The high-efficiency solid-liquid thickener for coal slurry water according to claim 1, characterized in that, The electric telescopic rod assembly (6) includes multiple electric telescopic components, which are connected in sequence. One side of the electric telescopic rod assembly (6) is connected to the main frame (1), and the other side is connected to the tray (3). The liquid level sensing switch (20) is electrically connected to the corresponding electric telescopic component.

3. The high-efficiency solid-liquid thickener for coal slurry water according to claim 1, characterized in that, The inlet pipe (7) is fitted with an annular sealing frame (16) that cooperates with the U-shaped outlet pipe (8). The inner wall of the main frame (1) is vertically provided with a first sliding groove (15), and the annular sealing frame (16) is slidably connected to the first sliding groove (15). A hanging mechanism is provided between the annular sealing frame (16) and the main frame (1).

4. The high-efficiency solid-liquid thickener for coal slurry water according to claim 3, characterized in that, The hanging mechanism includes a sliding block (13) and a protrusion (14). The protrusion (14) is connected to the top of the annular sealing frame (16). A second sliding groove (12) is provided on the inner wall of the main frame (1). The sliding block (13) is slidably connected to the second sliding groove (12) and the sliding block (13) is located on the lower side of the protrusion (14). A linkage mechanism is provided between the sliding block (13) and the linkage lifting rod (5).

5. The high-efficiency solid-liquid thickener for coal slurry water according to claim 4, characterized in that, The linkage mechanism includes a sloping pressure block (11) and a top ball (10). The sloping pressure block (11) is connected to the sliding stop block (13), and the top ball (10) is connected to the linkage lifting rod (5). The top ball (10) is aligned with the sloping surface of the sloping pressure block (11).

6. The high-efficiency solid-liquid thickener for coal slurry water according to claim 1, characterized in that, Both the partition baffle (17) and the main frame (1) are transparent structures.

7. The high-efficiency solid-liquid thickener for coal slurry water according to claim 6, characterized in that, Each of the concentration chambers (18) has a plurality of drainage holes (19) spaced longitudinally on one side, and each drainage hole (19) is equipped with a sealing plug.

8. The high-efficiency solid-liquid thickener for coal slurry water according to claim 1, characterized in that, A detachable base plate (4) is connected to the tray (3) by screws.

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