Slime water concentration system

Abstract

The invention relates to the technical field of slime water concentration, in particular to a slime water concentration system which comprises a dosing device and a concentrator, and the dosing device comprises a first spiral blade fixedly arranged on the inner wall of a feeding pipe of the concentrator; the first spiral blade is hollow; a medicine outlet is formed in the first spiral blade; and a medicine inlet pipe is arranged on the first spiral blade. Compared with the prior art, in the use process, a flocculating agent is introduced into the chemical inlet pipe and then flows out of the chemical outlet to be mixed with slime water in the feed pipe, the slime water forms rotational flow under the guidance of the first spiral blade, and the flow path of the slime water in the feed pipe is prolonged, so that the slime water and the flocculating agent are fully mixed.

Description

Technical Field

[0001] The invention relates to the technical field of coal sludge water concentration, and in particular to a coal sludge water concentration system. Background Art

[0002] The concentrator is a device that uses the flocculation and sedimentation of solid particles in the coal slurry water to complete the continuous concentration of the coal slurry water. It consists of a tank for the sedimentation of coal slurry water and an underflow discharge system that collects the sediment and discharges it to the underflow outlet. The coal slurry water is fed from the upper middle of the concentrator, and the clarified overflow water flows into the overflow tank from the periphery of the tank body. The precipitated product (underflow) is pumped out from the underflow outlet at the bottom of the tank body with a pump.

[0003] In the coal slime water treatment process, achieving efficient mixing of coal slime water and flocculant aqueous solution is the prerequisite for efficient concentration treatment of coal slime water. In the traditional process, the flocculant aqueous solution is generally added to the pipeline or chute before the feed port of the concentrator, and the coal slime water and the reagent flow through the pipeline for mixing, with a short action time and insufficient mixing. The concentrator only undertakes the subsequent concentration function, lacks the mixing function of the reagent and coal slime water, and ultimately leads to large reagent consumption and poor sedimentation effect.

[0004] There are many studies on the transmission device and body structure of the existing concentrators, but there are few innovations in the feed design. How to ensure that the reagent and coal slurry are fully mixed and evenly, and reduce the turbulence level in the concentrator body has been a research hotspot in this field in recent years. Summary of the invention

[0005] Aiming at the problem that the flocculant aqueous solution is directly added into the pipeline or chute before the feed port of the concentrator, resulting in the agent and the coal slime water not being fully mixed evenly, the present invention provides a coal slime water concentrating system.

[0006] In order to solve the above problems, the technical solution adopted by the present invention is: A coal slurry water concentration system includes a dosing device and a concentrator, wherein the dosing device includes a first spiral blade fixedly arranged on the inner wall of a feed pipe of the concentrator; the first spiral blade is hollow; a drug outlet is arranged on the first spiral blade; and a drug feed pipe is arranged on the first spiral blade. When in use, a flocculant is introduced into the drug feed pipe, and then flows out from the drug outlet to mix with coal slurry water in the feed pipe. The coal slurry water forms a vortex under the guidance of the first spiral blade, and the flow of the coal slurry water in the feed pipe is prolonged, so that the coal slurry water and the flocculant are fully mixed.

[0007] Preferably, two drug feeding pipes are provided; the two drug feeding pipes are respectively provided at the front and rear parts of the first spiral blade along the feeding direction of the feeding pipe; the drug feeding pipe is provided through the feeding pipe. This can ensure the mixing of coal slurry and flocculant in the feeding pipe, and can ensure the flocculant content in the concentrator, further ensuring the mixing effect.

[0008] Preferably, the medicine outlet is arranged on the back side of the first spiral blade relative to the feeding direction of the feeding pipe, which can reduce the backflow of coal slurry water.

[0009] Preferably, the concentrator includes a settling tank; a feed chamber is coaxially arranged in the settling tank; a distribution chamber is coaxially arranged in the feed chamber; the top surface of the feed chamber is higher than the top surface of the settling tank; a stirring shaft is arranged in the distribution chamber; the upper end of the stirring shaft is connected to a driving assembly; the lower end of the stirring shaft is rotatably arranged in the discharge port of the settling tank; and a feed pipe is connected to the upper part of the outer wall of the feed chamber along a tangential direction. Coal slurry enters the feed chamber from the feed pipe along a tangential direction to form a vortex, and is further mixed with the flocculant to enhance the mixing effect; then it enters the distribution chamber, and enters the settling tank from the distribution chamber for sedimentation.

[0010] Preferably, a flow stabilizing assembly is provided at the lower part of the feed chamber; the flow stabilizing assembly includes a flow stabilizing plate with a V-shaped cross section; the outer wall of the flow stabilizing plate is fixed to the inner wall of the sedimentation tank through a support plate, and a plurality of through holes are provided on the flow stabilizing plate; the lower end of the stirring shaft passes through the flow stabilizing plate. The coal slurry water flowing out of the distribution chamber falls onto the flow stabilizing plate, reducing the impact force of the coal slurry water falling and avoiding affecting the sedimentation effect. The through holes on the flow stabilizing plate facilitate the passage of coal slurry water.

[0011] Preferably, the feeding chamber is in the shape of a circular tube as a whole; a skirt is provided at the lower end of the feeding chamber; and the outer wall of the feeding chamber is fixed to the inner wall of the settling tank through a connecting rod. The setting of the skirt further reduces the influence of the splashing of the falling coal slurry on the settling.

[0012] Preferably, the driving assembly includes a motor; the motor is fixedly arranged on a mounting plate; the mounting plate is fixedly arranged on an upper end of the feed chamber; and the output shaft of the motor is connected to the stirring shaft.

[0013] Preferably, the distribution chamber comprises a cylinder with an open upper end and a closed lower end; a guide plate is arranged at the upper end of the cylinder to cooperate with the feed pipe; a stirring shaft is arranged through the bottom surface of the cylinder; a second spiral blade on the stirring shaft is arranged in the cylinder; and a plurality of distribution ports are arranged on the outer wall of the cylinder. The setting of the guide plate can guide the coal slurry water entering from the feed pipe into the distribution chamber, and then further increase the mixing effect with the flocculant under the stirring of the second spiral blade, and then flow out from the distribution port.

[0014] Preferably, a plurality of distribution ports are arranged in two layers along the height direction of the cylinder, and five distribution ports are evenly arranged in each layer along the circumferential direction; a receiving box is arranged on the inner wall of the distribution chamber to match the distribution ports; an overflow box is arranged on the outer wall of the distribution chamber to match the distribution ports. After the coal slurry enters the distribution chamber, it enters the receiving box, and then flows into the overflow box from the distribution port, and overflows from the overflow box to the flow stabilizing plate, which reduces the impact of the coal slurry falling to ensure the sedimentation effect, while improving the mixing effect of the coal slurry water and the flocculant.

[0015] It can be seen from the above technical solutions that the advantages of the present invention include: 1. When in use, the flocculant is introduced into the medicine feed pipe, and then flows out from the medicine outlet and mixes with the coal slime water in the feed pipe. The coal slime water forms a vortex under the guidance of the first spiral blade, and the flow of the coal slime water in the feed pipe is prolonged, so that the coal slime water and the flocculant are fully mixed.

[0016] 2. Through the reasonable setting of the distribution room, after the coal slurry enters the distribution room, it enters the receiving box, and then flows into the overflow box from the distribution port. When the overflow from the overflow box falls onto the flow stabilizing plate, the impact of the coal slurry falling is reduced to ensure the sedimentation effect, while improving the mixing effect of the coal slurry water and flocculant. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

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

[0019] Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention.

[0020] Figure 3 It is a cross-sectional structural schematic diagram of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the first spiral blade of the present invention.

[0022] Figure 5 It is a schematic structural diagram of the material distribution room of the present invention.

[0023] Figure 6 It is a schematic diagram of the top view of the material distribution chamber of the present invention.

[0024] Description of main reference numerals 1-feeding pipe, 2-first spiral blade, 3-sedimentation tank, 4-feeding chamber, 5-distribution chamber, 6-stabilizing plate, 7-support plate, 8-connecting rod, 9-stirring shaft, 10-motor, 11-mounting plate, 12-scraper; 201-drug outlet, 202-drug inlet pipe; 301-discharge port; 401-skirt plate; 501-cylinder body, 502-material distribution port, 503-material receiving box, 504-overflow box, 505-drainage plate; 901-second spiral blade. DETAILED DESCRIPTION

[0025] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0026] like Figure 1-4 As shown, a coal slurry water concentration system includes a dosing device and a concentrator, wherein the dosing device includes a first spiral blade 2 fixedly arranged on the inner wall of a feed pipe 1 of the concentrator; the first spiral blade 2 is hollow; a drug outlet 201 is arranged on the first spiral blade 2; and a drug feed pipe 202 is arranged on the first spiral blade 2. Two drug feed pipes 202 are arranged; the two drug feed pipes 202 are respectively arranged at the front and rear parts of the first spiral blade 2 along the feeding direction of the feed pipe 1; the drug feed pipe 202 is arranged through the feed pipe 1, which can ensure the mixing of coal slurry water and flocculant in the feed pipe 1, and can ensure the flocculant content in the concentrator, and further ensure the mixing effect. The drug outlet 201 is arranged on the back side of the first spiral blade 2 relative to the feeding direction of the feed pipe 1, which can reduce the backflow of coal slurry water.

[0027] Among them, the concentrator includes a settling tank 3, which has an opening at the upper end, a cone bottom at the lower part, and a discharge port 301 at the middle of the cone bottom; a feed chamber 4 is coaxially arranged in the settling tank 3, and the top surface of the feed chamber 4 is higher than the top surface of the settling tank 3 to prevent the overflow water after clarification from flowing into the feed chamber 4 again; the feed pipe 1 penetrates the outer wall of the settling tank 3 and is connected to the upper part of the outer wall of the feed chamber 4 along the tangential direction, and the coal slurry water enters the feed chamber 4 along the tangential direction from the feed pipe 1 to form a vortex, and further mixes with the flocculant to enhance the mixing effect. The feed chamber 4 is arranged in a circular tubular shape as a whole; a skirt 401 is arranged at the lower end of the feed chamber 4; and the outer wall of the feed chamber 4 is fixed to the inner wall of the settling tank 3 through a connecting rod 8. The setting of the skirt 401 further reduces the influence of the falling and splashing of the coal slurry water on the sedimentation.

[0028] A distribution chamber 5 is coaxially arranged in the feed chamber 4, and a stirring shaft 9 is arranged in the distribution chamber 5; the upper end of the stirring shaft 9 is connected to a driving assembly; the lower end of the stirring shaft 9 is rotatably arranged in the discharge port 301 of the sedimentation tank 3, and a circular ring table is arranged in the discharge port 301, and the circular ring table is fixed on the inner wall of the discharge port 301 through a support rod, and the stirring shaft 9 is rotatably arranged on the circular ring table; the driving assembly includes a motor 10; the motor 10 is fixedly arranged on a mounting plate 11; the mounting plate 11 is fixedly arranged at the upper end of the feed chamber 4; the output shaft of the motor 10 is connected to the stirring shaft 9.

[0029] like Figure 5-6As shown, the distribution chamber 5 includes a cylinder 501 with an open upper end and a closed lower end; a guide plate 505 is provided at the upper end of the cylinder 501 to cooperate with the feed pipe 1; the stirring shaft 9 is arranged through the bottom surface of the cylinder 501; the second spiral blade 901 on the stirring shaft 9 is arranged in the cylinder 501; and ten distribution ports 502 are arranged on the outer wall of the cylinder 501. The setting of the guide plate 505 can guide the coal slurry water entering from the feed pipe 1 into the distribution chamber 5, and then further increase the mixing effect with the flocculant under the stirring of the second spiral blade 901, and then flow out from the distribution port 502. Ten distribution ports 502 are arranged in two layers along the height direction of the cylinder 501, and five distribution ports 502 are evenly arranged in each layer along the circumferential direction, and the distribution ports 502 are staggered between the two layers; a receiving box 503 is arranged on the inner wall of the distribution chamber 5 to match the distribution ports 502; an overflow box 504 is arranged on the outer wall of the distribution chamber 5 to match the distribution ports 502. After the coal slurry enters the distribution chamber 5, it enters the receiving box 503, and then flows into the overflow box 504 from the distribution port 502, and overflows from the overflow box 504 and falls on the flow stabilizing plate 6, which reduces the impact of the coal slurry falling and ensures the sedimentation effect, while improving the mixing effect of the coal slurry water and the flocculant.

[0030] A flow stabilizing assembly is provided at the lower part of the feed chamber 4; the flow stabilizing assembly includes a flow stabilizing plate 6 with a V-shaped cross section; the outer wall of the flow stabilizing plate 6 is fixed to the inner wall of the sedimentation tank 3 through a support plate 7, and a plurality of through holes are provided on the flow stabilizing plate 6; the lower end of the stirring shaft 9 penetrates the flow stabilizing plate 6. The coal slurry water flowing out of the distribution chamber 5 falls on the flow stabilizing plate 6, reducing the impact force of the coal slurry water falling and avoiding affecting the sedimentation effect. The through holes on the flow stabilizing plate 6 facilitate the passage of coal slurry water.

[0031] When in use, the ratio of the flocculant introduced into the medicine inlet pipe 202 at the front end of the first spiral blade 2 to the flocculant introduced into the medicine inlet pipe 202 at the rear end of the first spiral blade 2 is 60:40. The medicine in the first spiral blade 2 flows out from the medicine outlet 201 and mixes with the coal slime water in the feed pipe 1. The coal slime water forms a vortex under the guidance of the first spiral blade 2, which prolongs the flow of the coal slime water in the feed pipe 1, so that the coal slime water and the flocculant are fully mixed.

[0032] Afterwards, the coal slurry water and the flocculant entering from the medicine feeding pipe 202 at the rear end of the first spiral blade 2 enter the feed chamber 4 along the tangential direction, rotate and fall onto the guide plate 505 of the distribution chamber 5, and are further mixed with the flocculant under the spiral conveying and stirring of the second spiral blade 901, and then enter the overflow box 504 through the distribution port 502 from the receiving box 503, and the overflowing coal slurry water falls on the flow stabilizing plate 6, further reducing the impact of the impact force on the sedimentation of the coal slurry water, and then falls into the lower part of the sedimentation tank 3 through the through hole on the flow stabilizing plate 6, and the scraper 12 is provided on the stirring shaft 9, and the scraper 12 is attached to the bottom surface of the sedimentation tank 3, and the settled coal slurry water flows out from the discharge port 301. The clarified overflow water overflows from the upper end of the sedimentation tank 3.

[0033] It can achieve efficient mixing of coal slime water and flocculant aqueous solution, fully interact with the agent and slurry, save agent consumption, reduce coal slime water sedimentation time, improve circulating water clarity, and ensure normal production of the coal preparation plant.

[0034] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coal slurry water concentration system, comprising a dosing device and a concentrator, characterized in that: The drug adding device comprises a first spiral blade (2) fixedly arranged on the inner wall of a feed pipe (1) of a concentrator; the first spiral blade (2) is hollow; a drug outlet (201) is arranged on the first spiral blade (2); and a drug feed pipe (202) is arranged on the first spiral blade (2).

2. The coal slurry water concentration system according to claim 1, characterized in that: Two medicine feed pipes (202) are provided; the two medicine feed pipes (202) are respectively provided at the front and rear parts of the first spiral blade (2) along the feeding direction of the feeding pipe (1); and the medicine feed pipe (202) is provided to penetrate the feeding pipe (1).

3. The coal slurry water concentration system according to claim 1, characterized in that: The medicine outlet (201) is arranged on the back side of the first spiral blade (2) relative to the feeding direction of the feeding pipe (1).

4. The coal slurry water concentration system according to claim 1, characterized in that: The concentrator comprises a settling tank (3); a feed chamber (4) is coaxially arranged in the settling tank (3); the top surface of the feed chamber (4) is higher than the top surface of the settling tank (3); a distribution chamber (5) is coaxially arranged in the feed chamber (4); a stirring shaft (9) is arranged in the distribution chamber (5); the upper end of the stirring shaft (9) is connected to a driving assembly; the lower end of the stirring shaft (9) is rotatably arranged in a discharge port (301) of the settling tank (3); and a feed pipe (1) is connected to the upper part of the outer wall of the feed chamber (4) along a tangential direction.

5. The coal slurry water concentration system according to claim 4, characterized in that: A flow stabilizing assembly is provided at the lower part of the feed chamber (4); the flow stabilizing assembly comprises a flow stabilizing plate (6) having a V-shaped cross section; the outer wall of the flow stabilizing plate (6) is fixed to the inner wall of the settling tank (3) via a support plate (7); a plurality of through holes are provided on the flow stabilizing plate (6); and the lower end of the stirring shaft (9) passes through the flow stabilizing plate (6).

6. The coal slurry water concentration system according to claim 5, characterized in that: The feeding chamber (4) is arranged in a circular tubular shape as a whole; a skirt plate (401) is arranged at the lower end of the feeding chamber (4); and the outer wall of the feeding chamber (4) is fixed to the inner wall of the settling tank (3) via a connecting rod (8).

7. The coal slurry water concentration system according to claim 4, characterized in that: The driving assembly comprises a motor (10); the motor (10) is fixedly mounted on a mounting plate (11); the mounting plate (11) is fixedly mounted on the upper end of the feed chamber (4); and the output shaft of the motor (10) is connected to the stirring shaft (9).

8. The coal slurry water concentration system according to claim 4, characterized in that: The material distribution chamber (5) comprises a cylinder (501) with an open upper end and a closed lower end; a guide plate (505) is provided at the upper end of the cylinder (501) in cooperation with the feed pipe (1); a stirring shaft (9) is arranged to penetrate the bottom surface of the cylinder (501); a second spiral blade (901) on the stirring shaft (9) is arranged inside the cylinder (501); and a plurality of material distribution openings (502) are provided on the outer wall of the cylinder (501).

9. The coal slurry water concentration system according to claim 8, characterized in that: The plurality of material distribution openings (502) are arranged in two layers along the height direction of the cylinder (501), and each layer has five material distribution openings (502) evenly arranged along the circumferential direction; a material receiving box (503) is arranged on the inner wall of the material distribution chamber (5) in coordination with the material distribution openings (502); and an overflow box (504) is arranged on the outer wall of the material distribution chamber (5) in coordination with the material distribution openings (502).

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