Efficient mixing and settling device and system for thickener

Abstract

The invention belongs to the technical field of concentrators, and particularly relates to an efficient mixing and settling device and system for a concentrator, the efficient mixing and settling device comprises a concentration tank, the top of the concentration tank is provided with a fence and a bridge frame, the bridge frame is provided with a guardrail, the top of the concentration tank is also provided with an overflow weir and a steady flow cylinder, and the steady flow cylinder is arranged below the bridge frame. A feeding pipe and a medicine feeding pipe are arranged above the flow stabilizing cylinder, at least two layers of buffer plates are arranged in the flow stabilizing cylinder, each layer of buffer plate comprises a plurality of fan-shaped plates which are obliquely arranged, and the fan-shaped plates are fixed to the side wall of the flow stabilizing cylinder and are distributed in an array mode in the circumferential direction of the central axis of the flow stabilizing cylinder; a mixing assembly is further arranged in the flow stabilizing cylinder. The material is decelerated through the buffer plate, so that the impact of the material on the bottom of the flow stabilizing cylinder is reduced, the service life of the device is prolonged, in addition, the buffer plate can prolong the retention time of the material in the flow stabilizing cylinder, the material and a medicament are fully mixed, and the sedimentation efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of thickeners, and in particular relates to a high-efficiency mixing and sedimentation device and system for thickeners. Background Art

[0002] Thickeners are mainly used for dewatering concentrated and tailing slurries in wet beneficiation operations, and are also widely used for the concentration and purification of solid-containing slurries in coal, iron and steel, chemical industry, building materials, water sources, sewage treatment, etc. As an important industrial production equipment, thickeners play an important role in improving production efficiency, saving resources and applications in multiple fields. With the continuous progress of technology and the increasingly strict environmental protection policies, thickeners will develop towards more intelligent, efficient and environmentally friendly directions.

[0003] Existing technologies such as the one disclosed in CN215781707U disclose a high-efficiency thickener. By setting an umbrella-shaped diffusion plate at the bottom of the steady flow cylinder, the tailing slurry enters the thickening pool in a diffused state, having a long sedimentation time. The overflow water will not flow out with fine particles, and the working efficiency is high. By setting stirring blades in the steady flow cylinder, the tailing slurry and the flocculant can be stirred and mixed in the steady flow cylinder, so that the tailing slurry and the flocculant are quickly mixed, the sedimentation speed is accelerated, the solid content of the sludge is increased, and the suspended matter in the effluent is reduced.

[0004] The existing devices still have the following deficiencies:

[0005] 1. In the existing devices, after the materials and reagents enter the steady flow cylinder, they directly flow to the bottom of the steady flow cylinder, and when the materials flow to the bottom of the steady flow cylinder under the action of gravitational acceleration, they have a high speed and kinetic energy, thus forming a large impact on the steady flow cylinder, easily causing the steady flow cylinder to vibrate and reducing the service life of the device.

[0006] 2. The existing devices only rely on the drive shaft to drive the stirring blades to rotate to stir the materials and reagents, so that the materials and reagents are mixed to improve the sedimentation efficiency. This mixing method has low efficiency and a high time cost for concentration.

[0007] 3. In the existing devices, the opening angle of the umbrella-shaped diffusion plate is fixed, and the materials are guided by the diffusion plate and fall on the same position at the bottom of the thickening pool. The space utilization rate at the bottom of the thickening pool is low, and this diffusion method causes uneven stress at the bottom of the thickening pool, easily leading to deformation or even damage of the bottom of the thickening pool, and the service life of the device is low. Summary of the Invention

[0008] The purpose of the present invention is to solve the problems raised in the above background art, and provide a high-efficiency mixing and sedimentation device and system for thickeners.

[0009] To achieve the above purpose, the present invention adopts the following technical solutions: A high-efficiency mixing and sedimentation device for thickeners, comprising:

[0010] A thickener, with a fence and a bridge on the top of the thickener, a guardrail on the bridge, and an overflow weir on the top of the thickener;

[0011] A steady flow cylinder, which is arranged under the bridge, and a feed pipe and a chemical feeding pipe are arranged above the steady flow cylinder.

[0012] Furthermore, a buffer plate is arranged in the steady flow cylinder. There are at least two layers of buffer plates. Each layer of buffer plate comprises a plurality of fan-shaped plates arranged obliquely. The fan-shaped plates are fixed on the side wall of the steady flow cylinder and are circumferentially arrayed along the central axis of the steady flow cylinder.

[0013] Furthermore, a mixing assembly is also arranged in the steady flow cylinder. The mixing assembly includes a motor fixed on the bridge. A transmission shaft is connected to the output shaft of the motor through a coupling. The transmission shaft penetrates through the steady flow cylinder. A rotating seat is arranged at the bottom of the thickener. The end of the transmission shaft away from the motor is rotatably connected to the rotating seat, and a stirring component is arranged on the transmission shaft.

[0014] Furthermore, the stirring component includes a sleeve rotatably connected to the transmission shaft. The outer side of the sleeve is fixed on the buffer plate. A crown gear is arranged at the top of the sleeve. The stirring component also includes stirring blades rotatably connected to the transmission shaft. A spur gear meshing with the crown gear is arranged on the central axis of the stirring blades.

[0015] Furthermore, a protective shell is arranged on the transmission shaft, and both the crown gear and the spur gear are inside the protective shell.

[0016] Furthermore, a flow guiding assembly is arranged on the transmission shaft. The flow guiding assembly includes a mounting seat fixed on the transmission shaft. A plurality of flow guiding plates circumferentially arrayed along the central axis of the transmission shaft are rotatably connected to the mounting seat. The plurality of flow guiding plates form an umbrella-shaped structure. A keyway is arranged on the transmission shaft. A flat key is hermetically and slidably connected in the keyway. A movable block is fixed on the flat key. A support rod is rotatably connected to the movable block, and the other end of the support rod is rotatably connected to the flow guiding plate. The flow guiding assembly also includes a driving component for driving the movable block to move.

[0017] Furthermore, the driving component includes a reciprocating thread arranged on the transmission shaft. A nut is threadedly connected to the reciprocating thread. A first movable sleeve is fixed at the bottom of the nut. The first movable sleeve is hermetically and slidably connected in the rotating seat. A second movable sleeve is rotatably connected to the top of the nut, and the top end of the second movable sleeve is fixed on the movable block.

[0018] Furthermore, a limiting groove is arranged on the side wall of the rotating seat, and a limiting plate is fixed on the side wall of the first movable sleeve. The limiting plate is hermetically and slidably connected in the limiting groove.

[0019] A system for a thickener, comprising:

[0020] An efficient mixing and settling system, including the efficient mixing device for thickeners described above;

[0021] A flocculation settling detection and analysis system that uses a micro-capacitor array sensor to detect the flocculation settling effect. The data is amplified and filtered and then sent to a microprocessor, and the detection values are displayed;

[0022] A control system. The control system adopts a two-layer structure. The bottom layer system is mainly a field PLC controller, and the upper layer system is mainly an industrial control computer in a remote centralized control room. The bottom layer system adopts a master-slave structure. While collecting and processing signals such as the incoming flow rate of coal slime water, incoming concentration, and turbidity of the overflow water in the thickening tank, it realizes remote control of the dosing system and the underflow system as well as data exchange with the remote upper computer. The master station PLC is equipped with a touch screen monitoring device that can display various parameters of coal slime water, the original coal well number, the property parameters of coal slime water obtained from off-line laboratory analysis, the real-time and cumulative dosing amounts, etc. collected in real time. Industrial Ethernet communication is used between the upper layer system and the bottom layer system as well as between the master and slave stations of the bottom layer system to achieve high-speed data transmission.

[0023] Compared with the existing technology, the advantages of the present invention are as follows:

[0024] 1. By setting a buffer plate in the present invention, after the material and the reagent enter the flow stabilization cylinder, they first fall on the buffer plate, and the buffer plate decelerates the material, thereby reducing the impact on the bottom of the flow stabilization cylinder and extending the service life of the device. In addition, the buffer plate can also extend the residence time of the material in the flow stabilization cylinder, enabling the material and the reagent to be fully mixed, which is beneficial to improving the settling efficiency.

[0025] 2. By setting a stirring component in the present invention, under the action of the crown gear and the column gear, when the stirring blade and the transmission shaft drive the stirring blade to rotate around the central axis of the transmission shaft, the stirring blade rotates synchronously, making the material and the reagent form a more complex flow pattern in the flow stabilization cylinder, which helps the material and the reagent to achieve a highly mixed effect in a short time, thereby significantly improving the stirring efficiency. In addition, through this stirring and mixing method, the material and the reagent can be fully stirred in every corner of the flow stabilization cylinder, avoiding stirring dead corners and improving the uniformity of stirring.

[0026] 3. By setting a diversion component in the present invention, when the transmission shaft rotates, the movable block moves up and down reciprocally through thread cooperation, and thus, with the cooperation of the support rod, the opening angle of the umbrella-shaped diversion plate changes continuously, so that the material falls on different positions at the bottom of the thickening tank, improving the space utilization rate at the bottom of the thickening tank and making the force at the bottom of the thickening tank more uniform, and extending the service life of the device. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of an efficient mixing and settling device for thickeners provided by the present invention;

[0028] Figure 2 It is a schematic diagram of the internal structure of the thickening tank in the overall high-efficiency mixing and settling device for thickeners provided by the present invention;

[0029] Figure 3 It is a schematic front sectional view structure diagram of the high-efficiency mixing and settling device for thickeners provided by the present invention;

[0030] Figure 4 is Figure 3 The enlarged view at position A in;

[0031] Figure 5 is Figure 3 The enlarged view at position B in;

[0032] Figure 6 is Figure 3 The enlarged view at position C in;

[0033] Figure 7 It is a schematic diagram of the internal structure of the flow stabilizer cylinder in the overall high-efficiency mixing and settling device for thickeners provided by the present invention;

[0034] Figure 8 It is a schematic diagram of the internal structure of the protective shell in the overall high-efficiency mixing and settling device for thickeners provided by the present invention;

[0035] Figure 9 It is the overall structure of the flocculation sedimentation detection and analysis system in the system for thickeners provided by the present invention.

[0036] In the figure, 1. thickening tank; 11. fence; 12. bridge; 121. guardrail; 13. overflow weir; 14. rotating seat; 141. limiting groove;

[0037] 2. flow stabilizer cylinder; 21. feed pipe; 22. chemical feeding pipe;

[0038] 3. buffer plate;

[0039] 41. motor; 42. transmission shaft; 421. keyway; 422. flat key; 423. reciprocating thread; 43. sleeve; 44. stirring blade; 431. crown gear; 441. spur gear; 45. protective shell;

[0040] 51. mounting seat; 52. guide plate; 53. movable block; 54. support rod; 55. nut; 551. first movable sleeve; 552. second movable sleeve; 5511. limiting plate. Detailed implementation manners

[0041] The following embodiments are only for illustrative purposes and are not intended to limit the scope of the present invention.

[0042] Such as Figures 1-9As shown in the figure, a high-efficiency mixing and sedimentation device for a thickener, comprising:

[0043] A thickening tank 1, with a fence 11 and a bridge 12 provided at the top of the thickening tank 1. There is a guardrail 121 on the bridge 12. An overflow weir 13 is also provided at the top of the thickening tank 1. A target frame and a discharge port are provided at the bottom of the thickening tank 1. The target frame and the discharge port adopt existing technologies and will not be elaborated here;

[0044] A steady flow cylinder 2, which is arranged below the bridge 12. A feed pipe 21 and a chemical feeding pipe 22 are provided above the steady flow cylinder 2. A buffer plate 3 is arranged inside the steady flow cylinder 2. There are at least two layers of buffer plates 3. Each layer of buffer plate 3 includes multiple inclined sector plates. The sector plates are fixed on the side wall of the steady flow cylinder 2 and are circumferentially arrayed along the central axis of the steady flow cylinder 2;

[0045] During operation, materials and chemicals enter the steady flow cylinder 2 through the feed pipe 21 and the chemical feeding pipe 22 respectively. After the materials and chemicals enter the steady flow cylinder 2, they fall on the buffer plate 3, and then continue to fall through the gaps between the buffer plates 3. The buffer plate 3 decelerates the materials in multiple layers, reducing the speed and kinetic energy of the materials when flowing to the bottom of the steady flow cylinder 2, thereby reducing the impact of the materials on the steady flow cylinder 2;

[0046] A mixing component is also arranged inside the steady flow cylinder 2. The mixing component includes a motor 41 fixed on the bridge 12. A transmission shaft 42 is connected to the output shaft of the motor 41 through a coupling. The transmission shaft 42 penetrates the steady flow cylinder 2. A rotating seat 14 is provided at the bottom of the thickening tank 1. The end of the transmission shaft 42 away from the motor 41 is rotatably connected to the rotating seat 14. A stirring part is arranged on the transmission shaft 42. The stirring part includes a sleeve 43 rotatably connected to the transmission shaft 42. The outside of the sleeve 43 is fixed to the buffer plate 3. A crown gear 431 is provided at the top of the sleeve 43. The stirring part also includes stirring blades 44 rotatably connected to the transmission shaft 42. A spur gear 441 meshing with the crown gear 431 is provided on the central axis of the stirring blades 44. A protective shell 45 is arranged on the transmission shaft 42. The crown gear 431 and the spur gear 441 are both inside the protective shell 45;

[0047] During operation, the motor 41 drives the transmission shaft 42 to rotate, thereby driving the stirring blades 44 to rotate around the central axis of the transmission shaft 42. Under the action of the crown gear 431 and the spur gear 441, while the stirring blades 44 rotate around the transmission shaft 42, they also rotate synchronously by themselves, enabling the materials and chemicals to form a more complex flow pattern inside the steady flow cylinder 2, which helps the materials and chemicals to achieve a highly mixed effect in a short time, thereby significantly improving the stirring efficiency. In addition, through this stirring and mixing method, the materials and chemicals can be fully stirred in every corner of the steady flow cylinder 2, avoiding stirring dead corners and improving the uniformity of stirring;

[0048] A diversion assembly is provided on the drive shaft 42. The diversion assembly includes a mounting seat 51 fixed to the drive shaft 42. A plurality of diversion plates 52 are rotatably connected to the mounting seat 51 and are circumferentially arrayed along the central axis of the drive shaft 42. The plurality of diversion plates 52 form an umbrella-like structure. A keyway 421 is provided on the drive shaft 42, and a flat key 422 is hermetically and slidably connected in the keyway 421. A movable block 53 is fixed to the flat key 422. A support rod 54 is rotatably connected to the movable block 53, and the other end of the support rod 54 is rotatably connected to the diversion plate 52. The diversion assembly further includes a driving component for driving the movable block 53 to move. The driving component includes a reciprocating thread 423 provided on the drive shaft 42. A nut 55 is threadedly connected to the reciprocating thread 423. A first movable sleeve 551 is fixed to the bottom of the nut 55. The first movable sleeve 551 is hermetically and slidably connected in the rotating seat 14. A limiting groove 141 is provided on the side wall of the rotating seat 14. A limiting plate 5511 is fixed to the side wall of the first movable sleeve 551. The limiting plate 5511 is hermetically and slidably connected in the limiting groove 141. The top of the nut 55 is rotatably connected to a second movable sleeve 552, and the top end of the second movable sleeve 552 is fixed to the movable block 53;

[0049] During operation, the rotation of the drive shaft 42 drives the rotation of the mounting seat 51, which further drives the rotation of the diversion plates 52 around the drive shaft 42, causing the material to accelerate and flow to the bottom of the thickener 1 under the combined action of gravity and centrifugal force, improving the sedimentation efficiency. In addition, when the drive shaft 42 rotates, the nut 55 is driven to move up and down reciprocally under the action of the threaded fit, so that the mounting seat 51 rotates and moves up and down reciprocally at the same time, continuously changing the opening angle of the umbrella-shaped diversion plates 52, causing the material to fall at different positions on the bottom of the thickener 1;

[0050] A system for a thickener, characterized by comprising:

[0051] A high-efficiency mixing and sedimentation system, including the high-efficiency mixing device for a thickener as described above;

[0052] A flocculation sedimentation detection and analysis system, which uses a micro-capacitance array sensor to detect the flocculation sedimentation effect. The data is amplified and filtered and then sent to a microprocessor, and the detection value is displayed;

[0053] A control system. The control system adopts a two-layer structure. The bottom-layer system is mainly a field PLC controller, and the upper-layer system is mainly an industrial control computer in a remote centralized control room. The bottom-layer system adopts a master-slave structure. While collecting and processing signals of the feed flow rate, feed concentration of coal slime water, and turbidity of the overflow water in the thickener, it realizes remote control of the chemical dosing system and the underflow system and data exchange with the remote upper computer. The main station PLC is equipped with a touch-screen monitoring device that can display various parameters of coal slime water, the raw coal well number, the property parameters of coal slime water obtained from off-line chemical analysis, the real-time and cumulative chemical dosing amounts, etc. collected in real time. The upper-layer system and the bottom-layer system, as well as between the master and slave stations of the bottom-layer system, all use industrial Ethernet communication to achieve high-speed data transmission.

[0054] The working principle of the present invention is as follows:

[0055] When working, the motor 41 is turned on, and the materials and the medicament are respectively fed into the steady flow cylinder 2 through the feed pipe 21 and the medicine inlet pipe 22. After the materials and the medicament enter the steady flow cylinder 2, they fall on the buffer plate 3, and then continue to fall through the gaps between the buffer plates 3. The buffer plate 3 decelerates the materials in multiple layers, reducing the speed and kinetic energy of the materials when flowing to the bottom of the steady flow cylinder 2, thereby reducing the impact of the materials on the steady flow cylinder 2 and prolonging the service life of the device. In addition, the buffer plate 3 can also extend the residence time of the materials in the steady flow cylinder 2, enabling the materials and the medicament to be fully mixed, which is beneficial to improving the sedimentation efficiency;

[0056] The motor 41 drives the transmission shaft 42 to rotate, thereby driving the stirring blade 44 to rotate around the central axis of the transmission shaft 42. Under the action of the crown gear 431 and the column gear 441, while the stirring blade 44 rotates around the transmission shaft 42, it rotates synchronously by itself, enabling the materials and the medicament to form a more complex flow pattern in the steady flow cylinder 2, which helps the materials and the medicament to achieve a highly mixed effect in a short time, thereby significantly improving the stirring efficiency. In addition, through this stirring and mixing method, the materials and the medicament can be fully stirred in every corner of the steady flow cylinder 2, avoiding stirring dead corners and improving the uniformity of stirring;

[0057] The mixed materials fall onto the guide plate 52. When the transmission shaft 42 rotates, it drives the mounting seat 51 to rotate, further driving the guide plate 52 to rotate around the transmission shaft 42, enabling the materials to accelerate and flow to the bottom of the thickening tank 1 under the combined action of gravity and centrifugal force, improving the sedimentation efficiency. In addition, when the transmission shaft 42 rotates, under the action of the screw thread fit, it drives the nut 55 to move up and down reciprocally, so that while the mounting seat 51 rotates, it moves up and down reciprocally, continuously changing the opening angle of the umbrella-shaped guide plate 52, enabling the materials to fall on different positions at the bottom of the thickening tank 1, improving the space utilization rate at the bottom of the thickening tank, and making the force at the bottom of the thickening tank more uniform, prolonging the service life of the device.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An efficient mixing and settling device for a thickener, characterized in that Including: A thickening tank (1), a fence (11) and a bridge (12) are provided at the top of the thickening tank (1), a guardrail (121) is provided on the bridge (12), and an overflow weir (13) is further provided at the top of the thickening tank (1); A steady flow cylinder (2), the steady flow cylinder (2) is arranged below the bridge (12), and a feed pipe (21) and a chemical feeding pipe (22) are provided above the steady flow cylinder (2).

2. The high-efficiency mixing and settling device for a thickener according to claim 1, wherein, A buffer plate (3) is arranged in the steady flow cylinder (2), the buffer plate (3) has at least two layers, and each layer of the buffer plate (3) includes a plurality of inclined sector plates, and the sector plates are fixed on the side wall of the steady flow cylinder (2) and are circumferentially arranged in an array along the central axis of the steady flow cylinder (2).

3. The high-efficiency mixing and sedimentation device for a thickener according to claim 2, characterized in that, A mixing assembly is further arranged in the steady flow cylinder (2), the mixing assembly includes a motor (41) fixed on the bridge (12), a transmission shaft (42) is connected to the output shaft of the motor (41) through a coupling, the transmission shaft (42) penetrates through the steady flow cylinder (2), a rotating seat (14) is arranged at the bottom of the thickening tank (1), and one end of the transmission shaft (42) away from the motor (41) is rotatably connected to the rotating seat (14), and a stirring member is arranged on the transmission shaft (42).

4. The high-efficiency mixing and sedimentation device for a thickener according to claim 3, characterized in that, The stirring member includes a sleeve (43) rotatably connected to the transmission shaft (42), the outside of the sleeve (43) is fixed to the buffer plate (3), a crown gear (431) is arranged at the top of the sleeve (43), the stirring member further includes a stirring blade (44) rotatably connected to the transmission shaft (42), and a column gear (441) meshing with the crown gear (431) is arranged on the central axis of the stirring blade (44).

5. The high-efficiency mixing and sedimentation device for a thickener according to claim 4, wherein, A protective shell (45) is arranged on the transmission shaft (42), and both the crown gear (431) and the column gear (441) are inside the protective shell (45).

6. The high-efficiency mixing and settling device for a thickener according to claim 3, characterized in that, A flow guiding assembly is arranged on the transmission shaft (42), the flow guiding assembly includes a mounting seat (51) fixed on the transmission shaft (42), a plurality of flow guiding plates (52) circumferentially arranged in an array along the central axis of the transmission shaft (42) are rotatably connected to the mounting seat (51), and the plurality of flow guiding plates (52) form an umbrella-like structure. A key groove (421) is formed on the transmission shaft (42), a flat key (422) is hermetically and slidably connected in the key groove (421), a movable block (53) is fixed on the flat key (422), a support rod (54) is rotatably connected to the movable block (53), and the other end of the support rod (54) is rotatably connected to the flow guiding plate (52). The flow guiding assembly further includes a driving member for driving the movable block (53) to move.

7. The high-efficiency mixing and sedimentation device for a thickener according to claim 6, wherein, The driving member includes a reciprocating thread (423) formed on the transmission shaft (42), a nut (55) is threadedly connected to the reciprocating thread (423), a first movable sleeve (551) is fixed to the bottom of the nut (55), the first movable sleeve (551) is hermetically and slidably connected in the rotating seat (14), a second movable sleeve (552) is rotatably connected to the top of the nut (55), and the top end of the second movable sleeve (552) is fixed to the movable block (53).

8. The high-efficiency mixing and sedimentation device for a thickener according to claim 7, characterized in that, A limiting groove (141) is formed in the side wall of the rotating seat (14), a limiting plate (5511) is fixed on the side wall of the first movable sleeve (551), and the limiting plate (5511) is hermetically and slidably connected in the limiting groove (141).

9. A system for a thickener, characterized in that, Comprising: A high-efficiency mixing and settling system, comprising the high-efficiency mixing device for a thickener according to any one of claims 1-8; A flocculation settling detection and analysis system, which uses a micro-capacitor array sensor to detect the flocculation settling effect, and the data is sent to a microprocessor after being amplified and filtered, and the detection value is displayed; A control system, the control system adopts a two-layer structure, the bottom layer system is mainly a field PLC controller, and the upper layer system is mainly an industrial control computer in a remote centralized control room. The bottom layer system adopts a master-slave structure. While collecting and processing the signals of the coal slime water feed flow rate, feed concentration and the turbidity of the overflow water in the thickening tank, it realizes remote control of the dosing system and the underflow system and data exchange with the remote upper computer. The master station PLC is equipped with a touch screen monitoring device that can display various parameters of the coal slime water collected in real time, the raw coal well number, the property parameters of the coal slime water obtained by off-line laboratory analysis, the real-time and cumulative dosing amounts, etc. The upper layer system and the bottom layer system, as well as between the master and slave stations of the bottom layer system, all use industrial Ethernet communication to achieve high-speed data transmission.

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