Rapid evaluation device for flocculating settling performance of slime water

Abstract

The invention provides a slime water flocculation and sedimentation performance rapid evaluation device which comprises a sedimentation shell, multiple stages of vortex flocculation structures are sequentially arranged in the sedimentation shell from bottom to top, a gap is formed between every two adjacent stages of vortex flocculation structures, each stage of vortex flocculation structure comprises a plurality of triangular prism type turbolators, and each stage of vortex flocculation structure comprises a plurality of triangular prism type turbolators. Each triangular prism type turbolator is provided with two triangular surfaces connected with the inner wall of the sedimentation shell, the heights of the triangular surfaces of the triangular prism type turbolators in each stage of vortex flocculation structure are the same, and the heights of the triangular surfaces in each stage of vortex flocculation structure are sequentially increased from bottom to top; the multiple triangular prism type turbolators in each stage of vortex flocculation structure are divided into multiple rows, the vertical central axes of the multiple triangular prism type turbolators located in the same column coincide, and the multiple triangular prism type turbolators in each row are arranged in the same direction. The coal slime water can be quickly flocculated and settled, and is used for feeding back and controlling coal slime water dosing.

Description

Technical Field

[0001] The invention relates to the technical field of coal sludge water flocculation and sedimentation, in particular to a device for quickly evaluating the flocculation and sedimentation performance of coal sludge water. Background Art

[0002] Coal slime water flocculation and sedimentation is the main treatment process for coal slime water generated in the current coal wet washing process. The efficiency of this process mainly depends on the type and amount of the added reagents. When the amount added is insufficient, good flocs cannot be formed, the sedimentation efficiency is low, and the turbidity of the overflow circulating water is high, which affects the upstream washing process. When the amount added is excessive, the viscosity of the settled coal slime and overflow water will increase, which will affect the downstream filtration link and the upstream washing process. Therefore, determining the optimal addition amount and tracking and adjusting it is a prerequisite to ensure that the flocculation sedimentation work is in good condition.

[0003] The optimum dosage is mainly affected by the concentration of the coal slurry water itself and the mineral composition of the coal slurry, but there is currently no reliable equipment for online detection of the mineral composition of coal slurry water. The mainstream solution is to detect the concentration and flow of coal slurry water for feedforward, and to detect the sedimentation interface and overflow water turbidity in the concentrator for feedback to comprehensively adjust the dosage. This solution cannot reflect changes in coal quality, and the existing interface instrument cannot accurately measure changes in the sedimentation interface. When the overflow turbidity begins to increase, the sedimentation state of the concentrator has deviated from the ideal state, and it usually takes 1 to 2 hours or longer to adjust back, and there is a serious hysteresis. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a device for quickly evaluating the flocculation and sedimentation performance of coal sludge water. The device for quickly evaluating the flocculation and sedimentation performance of coal sludge water provided by the present invention is based on the flocculation dynamics principle that the vortex scale determines the flocculation effect and the quantitative relationship obtained through research results. The size of the turbulent is determined based on the diameter of the flocculated particles. The flocculation and sedimentation performance of coal sludge water can be quickly flocculated and evaluated under certain dosing conditions. The obtained sedimentation performance is used as the basis for adjusting the dosage, avoiding the detection of the properties of coal sludge water, saving the instrument investment of the intelligent dosing system, simplifying the control system, and at the same time, because it does not rely on the detection of coal sludge properties and the detection of the overflow turbidity of the concentrator, it can adapt to complex and changeable coal quality conditions and avoid the hysteresis of feedback adjustment, and it is more adaptable and reliable.

[0005] In order to solve the above technical problems, the implementation scheme provided by the present invention is to provide a device for quickly evaluating the flocculation and sedimentation performance of coal sludge water, comprising a sedimentation shell, on which a water inlet pipe for conveying coal sludge water containing flocculants is provided, and further comprising:

[0006] A multi-stage vortex flocculation structure, wherein the multi-stage vortex flocculation structure is sequentially arranged in a sedimentation shell from bottom to top, and there is a gap between two adjacent stages of vortex flocculation structures, and each stage of vortex flocculation structure includes a plurality of triangular prism-type spoilers, each triangular prism-type spoiler has two triangular faces, and the two triangular faces are respectively connected to the inner wall of the sedimentation shell, and the height of the triangular faces of each triangular prism-type spoiler in each stage of vortex flocculation structure is the same, and the heights of the multiple triangular faces in the vortex flocculation structures of each stage sequentially arranged from bottom to top are successively increased, wherein the triangular face height h1 of the triangular prism-type spoiler in the vortex flocculation structure at the bottommost level of the sedimentation shell is calculated by the average particle size d of the coal slime raw material, and the calculation formula is: h1=(10d-0.046) / 0.0067. The triangular face height h1 of each triangular prism-type spoiler in the vortex flocculation structure at the topmost level of the sedimentation shell is n ,h n Less than or equal to 15cm. The triangular surface height h of each triangular prism-type spoiler in the intermediate vortex flocculation structure x , where x is any natural number between 2 and 6, and h x Through h1 and h n The calculation formula is: h x =h1+(h n -h1) / (n-1)*(x-1).

[0007] The multiple triangular prism-shaped spoilers in each stage of the vortex flocculation structure are divided into multiple rows, the vertical central axes of the multiple triangular prism-shaped spoilers in the same row coincide, and the multiple triangular prism-shaped spoilers in each row are arranged in the same direction.

[0008] Preferably, the three angles of the triangular face of the triangular prism-type spoiler are: a base angle of 25° to 35°, a vertex angle of 15° to 20°, and an obtuse angle of 125° to 140°.

[0009] Preferably, the three angles of the triangular face of the triangular prism-type spoiler are: a base angle of 30°, a vertex angle of 15° and an obtuse angle of 135°.

[0010] Preferably, the center distance between two adjacent triangular prism-type spoilers in the same row in each stage of the vortex flocculation structure is 0.518 times the height of the triangular prism-type spoilers located in this stage.

[0011] Preferably, the vortex flocculation structure includes three levels of vortex flocculation structures arranged in the sedimentation shell from bottom to top, namely, a primary vortex flocculation structure, a secondary vortex flocculation structure and a tertiary vortex flocculation structure, and the triangular surface height of each triangular prism-type spoiler in the three-stage vortex flocculation structure is less than or equal to 15 cm.

[0012] Preferably, the spacing height between two adjacent vortex flocculation structures is the height of the triangular surface in the lower vortex flocculation structure between the two adjacent upper and lower stages.

[0013] Preferably, the overall height of each stage of flocculation structure is H, and H is 30 cm to 40 cm. The number of rows of spoilers required for each stage is obtained by rounding the ratio of the vortex zone height to the spoiler height.

[0014] Preferably, a baffle is provided at the bottom of the sedimentation shell in the longitudinal direction, and the baffle separates the bottom of the sedimentation shell into a flocculation sedimentation zone and a coal discharge channel. A plurality of triangular prism-type spoilers are arranged in the flocculation sedimentation zone, and the top of the coal discharge channel is connected to the top of the lowest-level vortex flocculation structure, and the bottom of the coal discharge channel is connected to the bottom of the sedimentation shell.

[0015] Preferably, an overflow outlet is provided at the top of the sedimentation shell, and a turbidity meter is provided in the overflow outlet, and the turbidity meter is used to detect the turbidity of the wastewater discharged from the overflow outlet.

[0016] Preferably, a water distribution pipe is provided in the sedimentation shell below the smallest-stage vortex flocculation structure in the horizontal direction, the water distribution pipe is connected to the water inlet pipe, and a plurality of water distribution holes are provided on the water distribution pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Due to the setting of triangular prism-type spoilers with gradually increasing sizes, these triangular prism-type spoilers form vortices with gradually increasing sizes from top to bottom in the sedimentation shell, which is consistent with the law that flocs grow from small to large. These vortices can greatly increase the collision probability of particles and flocs in coal sludge water, so that fine particles can quickly adhere and grow into larger flocs; at the same time, the triangular prism-type spoilers have a special triangular structure that can make the large flocs that are settling settle to one side of the sedimentation shell, avoiding long-term interference with the rising water flow and causing the flocs to break, ensuring the stability of the flocculation and sedimentation process. Through this device, the flocculation and sedimentation separation of coal sludge water can be achieved within tens of seconds, thereby realizing the rapid evaluation of the sedimentation performance of coal sludge water, and is used for rapid feedback control of coal sludge water flocculation and sedimentation dosing in industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic structural diagram of a device for quickly evaluating the flocculation and sedimentation performance of coal sludge water.

[0020] Figure 2 The diagram is a schematic diagram of a triangular prism-type spoiler of a device for quickly evaluating the flocculation and sedimentation performance of coal sludge water according to the present invention.

[0021] Figure 3The schematic diagram of the contact between the triangular prism-type flow disturber and the peat of the rapid evaluation device for the flocculation and sedimentation performance of coal sludge water of the present invention is shown.

[0022] Figure 4 This is an arrangement diagram of triangular prism-type spoilers in each row of each level of vortex flocculation structure of a device for rapid evaluation of coal sludge water flocculation and sedimentation performance of the present invention.

[0023] Figure 5 The present invention is a schematic diagram of the three-dimensional structure of a triangular prism-type spoiler of a device for quickly evaluating the flocculation and sedimentation performance of coal sludge water.

[0024] Description of reference numerals:

[0025] 1. Sedimentation shell, 2. Primary vortex flocculation structure, 3. Secondary vortex flocculation structure, 4. Third-stage vortex flocculation structure, 5. Triangular prism type spoiler, 6. Funnel-shaped sedimentation cylinder, 7. Water distribution pipe, 8. Turbidimeter, 9. Coal slime outlet, 10. Coal discharge channel, 11. Overflow outlet. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The inventors found that the flocculation process of coal slime water is affected by the fluid environment. When a suitable coagulation device is provided, large and dense flocs can be formed, thereby greatly improving the flocculation and sedimentation speed. However, in the existing industry, the flocculation and sedimentation of coal slime water are mostly done by adding drugs in pipelines and settling in concentrators. No suitable flocculation device is provided. The flocs generated are small and uneven, and the sedimentation process takes a long time. Therefore, the flocculation and sedimentation effect of coal slime water under the current dosing system cannot be quickly reflected. There is obvious hysteresis in the dosing feedback control, which is not conducive to timely adjustment of the dosage.

[0028] In view of this, the present invention is based on the flocculation dynamics principle that the vortex scale determines the flocculation effect and the quantitative relationship obtained through research results, and determines the size of the turbulent based on the diameter of the flocculated particles, which can quickly flocculate and settle the coal sludge water and evaluate its flocculation and sedimentation performance under certain dosing conditions. The obtained sedimentation performance is used as the basis for adjusting the dosage, avoiding the detection of the properties of the coal sludge water, saving the instrument investment of the intelligent dosing system, simplifying the control system, and at the same time, because it does not rely on the detection of coal sludge properties and the detection of the overflow turbidity of the concentrator, it can adapt to complex and changeable coal quality conditions and avoid the hysteresis of feedback adjustment, and it is more adaptable and reliable.

[0029] like Figure 1 to Figure 4 As shown, the present invention provides a device for quickly evaluating the flocculation and sedimentation performance of coal sludge water, comprising a sedimentation shell 1, on which is provided a water inlet pipe 7 for conveying coal sludge water containing flocculants, and further comprising:

[0030] A multi-stage vortex flocculation structure, wherein the multi-stage vortex flocculation structure is sequentially arranged in a sedimentation shell 1 from bottom to top, and there is a gap between two adjacent stages of the vortex flocculation structure, and each stage of the vortex flocculation structure includes a plurality of triangular prism-type spoilers 5, each triangular prism-type spoiler 5 has two triangular faces, and the two triangular faces are respectively connected to the inner wall of the sedimentation shell 1, and the height of the triangular faces of each triangular prism-type spoiler 5 in each stage of the vortex flocculation structure is the same, and the heights of the plurality of triangular faces in the vortex flocculation structures of each stage sequentially arranged from bottom to top are increased in sequence, wherein the height h1 of the triangular face of the triangular prism-type spoiler 5 in the vortex flocculation structure at the bottommost level of the sedimentation shell 1 is calculated by the average particle size d of the coal slime raw material, and the calculation formula is: h1=(10d-0.046) / 0.0067; the height h1 of the triangular face of each triangular prism-type spoiler 5 in the vortex flocculation structure at the topmost level of the sedimentation shell 1 is n ,h n Less than or equal to 15cm, the triangular surface height h of each triangular prism-type spoiler 5 in the intermediate vortex flocculation structure x (x is any natural number between 2 and 6), h x Through h1 and h n The calculation formula is: h x =h1+(h n -h1) / (n-1)*(x-1).

[0031] The multiple triangular prism-shaped spoilers 5 in each stage of the vortex flocculation structure are divided into multiple rows, the vertical central axes of the multiple triangular prism-shaped spoilers 5 in the same row coincide, and the multiple triangular prism-shaped spoilers 5 in each row are arranged in the same direction.

[0032] When the coal slurry water fed into the sedimentation shell 1 from the bottom of the sedimentation shell 1 flows from bottom to top through the multi-stage vortex flocculation structure, a vortex is formed on the upper part of each triangular prism-type spoiler 5 in each level of the vortex flocculation structure. The size of the vortex is proportional to the width of the triangular prism-type spoiler 5, which is the distance between the two triangular faces of the triangular prism-type spoiler 5 (e.g. Figure 5As shown, the specific proportional relationship between the size of the vortex and the width of the triangular prism-type spoiler 5 cannot be given, because the proportional relationship changes with the flow velocity of the fluid), thereby promoting the collision and adhesion of solid particles in the coal slurry water in this area. The coagulation dynamics theory points out that when the vortex scale is similar to the particle size, it can effectively promote collision and adhesion. As the flocs gradually increase from bottom to top, the heights of multiple triangular faces in the vortex flocculation structures of each level arranged from bottom to top increase in sequence. The height h1 of the triangular face of the triangular prism-type spoiler 5 in the vortex flocculation structure at the bottom of the sedimentation shell 1 is calculated by the average particle size d of the coal slurry raw material, and the calculation formula is: h1 = (10d-0.046) / 0.0067; the height h1 of the triangular face of each triangular prism-type spoiler 5 in the vortex flocculation structure at the top of the sedimentation shell 1 is n ,h n Less than or equal to 15cm, the triangular surface height h of each triangular prism-type spoiler 5 in the intermediate vortex flocculation structure x (x is any natural number between 2 and 6), the height h of the intermediate level spoilers x Through h1 and h n The calculation formula is: h x =h1+(h n -h1) / (n-1)*(x-1).

[0033] After the coal slurry water flows from bottom to top through the multi-stage vortex flocculation structure in the sedimentation shell 1, the small flocs gradually grow into large flocs. During the flocculation process, the flocs gradually grow, and their sedimentation velocity also gradually increases. When the sedimentation velocity is greater than the speed of the water flowing upward, sedimentation will occur. Since the vertical central axes of the multiple triangular prism type spoilers 5 located in the same column overlap, the arrangement direction of the multiple triangular prism type spoilers 5 in each row is consistent, so the triangular prism type spoilers 5 of the adjacent two rows in the vortex flocculation structure of the same level are staggered, so that the particles settled by the upper triangular prism type spoilers 5 can be deposited on the inclined plane of the triangular prism type spoilers 5 in the lower layer. Since the inclination angle of the inclined plane is large enough, under the action of gravity and inertia, part of the flocs will gradually move to the lower right under the guidance of the inclined plane, and settle to the bottom from the right side, reducing the fragmentation caused by the interference of the rising water.

[0034] Figure 2 Schematic diagram of a triangular prism type spoiler of a device for rapid evaluation of flocculation and sedimentation performance of coal sludge water. The triangular prism type spoiler in the schematic diagram may be a schematic diagram of each triangular prism type spoiler in a vortex flocculation structure of each level. When h is h1, Figure 2 The triangular prism type spoiler shown is a schematic diagram of the triangular prism type spoiler 5 in the vortex flocculation structure located at the bottom of the sedimentation shell 1. When h is h n hour, Figure 2The triangular prism type spoiler shown is a schematic diagram of each triangular prism type spoiler 5 in the vortex flocculation structure located at the top of the sedimentation shell 1. When h is h x， (x is any natural number between 2 and 6), Figure 2 The triangular prism-type spoiler shown is a schematic diagram of each triangular prism-type spoiler 5 located in each stage of the vortex flocculation structure in the middle of the sedimentation shell 1 .

[0035] In the sedimentation shell 1, as the triangular surface height of the triangular prism type spoiler 5 in each level of the vortex flocculation structure gradually increases, the size of the flocs also increases. When the floc particle size is large enough to descend along the inclined surface of the triangular prism type spoiler 5, it will descend directly. When the floc particle size is not large enough to form particles that can settle with the vortex at the top of each triangular prism type spoiler 5 of this layer, the floc will continue to rise. Otherwise, large flocs will be formed and settled at a triangular prism type spoiler 5 of any layer of the vortex flocculation structure 3 of this level. If the secondary vortex flocculation structure 3 is unable to completely settle the flocs, a small part of the flocs will be settled in the tertiary vortex flocculation structure 4. The sedimentation principle is consistent with the sedimentation principle of each triangular prism type spoiler 5 in the primary vortex flocculation structure 2 and the secondary vortex flocculation structure 3, and will not be repeated here.

[0036] Specifically, the three angles of the triangular face of the triangular prism type spoiler 5 are: a base angle of 25° to 35°, a vertex angle of 15° to 20°, and an obtuse angle of 125° to 140°. Preferably, the three angles of the triangular face of the triangular prism type spoiler 5 are: a base angle of 30°, a vertex angle of 15°, and an obtuse angle of 135°.

[0037] The structural design significance of the triangular prism spoiler 5 is as follows: Figure 3-4 As shown, when the coal sludge water flows through the triangular prism type spoiler 5 from bottom to top, the design of the triangular prism type spoiler 5 can form a vortex zone on its upper part, so that when the coal sludge rises, the vortex can greatly increase the collision probability of particles and flocs in the coal sludge water, and the coal sludge water particles will collide and adhere to form flocs in this area, and the descending flocs will settle along the slope.

[0038] Specifically, the interval height between the upper and lower adjacent vortex flocculation structures is the height of the triangular surface in the lower vortex flocculation structure between the upper and lower adjacent stages. The purpose of this design is to make the water flow smoothly transition when flowing between stages.

[0039] Specifically, the center distance between two adjacent triangular prism-type spoilers 5 in the same row in each stage of the vortex flocculation structure is 0.518 times the height of the triangular face of the triangular prism-type spoiler 5 located at this stage. At this time, the coal slime settled down from the inclined surface of the triangular prism-type spoiler 5 located in the upper row can be just taken over by the triangular prism-type spoiler 5 in the lower row, thereby achieving the purpose of gradually transporting the settled coal slime to the right.

[0040] Figure 4 This is a diagram of the arrangement of triangular prism-type spoilers in each row of the vortex flocculation structure of a rapid evaluation device for flocculation and sedimentation performance of coal sludge water. When h is h1, Figure 4 It means that the center distance between two adjacent triangular prism-type flow spoilers 5 in the same row in the vortex flocculation structure at the bottom of the sedimentation shell 1 is 0.518 times the height of the triangular face of the triangular prism-type flow spoiler 5 at this level. n hour, Figure 4 It means that the center distance between two adjacent triangular prism-type flow spoilers 5 in the same row in the vortex flocculation structure at the top of the sedimentation shell 1 is 0.518 times the height of the triangular face of the triangular prism-type flow spoiler 5 at this level. x， (x is any natural number between 2 and 6), Figure 4 It means that the center distance between two adjacent triangular prism type spoilers 5 in the same row in each stage of the vortex flocculation structure located in the middle of the sedimentation shell 1 is 0.518 times the height of the triangular face of the triangular prism type spoiler 5 located in this stage.

[0041] Specifically, the overall height of each flocculation structure is H, which is 30 cm to 40 cm, and the number of rows of spoilers required for each stage is obtained by rounding the ratio of the vortex zone height to the spoiler height. The purpose of making the height of each coagulation zone substantially equal is to allow the coal slurry water to reserve sufficient residence time in each flocculation zone without breaking.

[0042] Specifically, a baffle is provided at the bottom of the sedimentation shell 1 in the longitudinal direction, and the baffle divides the bottom of the sedimentation shell 1 into a flocculation sedimentation area and a coal discharge channel 10. A plurality of triangular prism-type flow spoilers 5 are provided in the flocculation sedimentation area. The top of the coal discharge channel 10 is connected to the top of the vortex flocculation structure at the lowest level, and the bottom of the coal discharge channel 10 is connected to the bottom of the sedimentation shell 1. Most of the flocs settled from the vortex flocculation structures at various levels above the vortex flocculation structure at the lowest level can be collected through the coal discharge channel 10 to prevent the flocs from being broken again after staying.

[0043] Specifically, an overflow outlet 11 is provided on the top of the sedimentation shell 1, and a turbidity meter 8 is provided in the overflow outlet 11. The turbidity meter 8 is used to detect the turbidity of the wastewater discharged from the overflow outlet 11, thereby judging the sedimentation performance.

[0044] Specifically, a funnel-shaped settling cylinder 6 is provided at the bottom of the settling shell 1 to enrich the settled peat, and the peat enriched by the funnel-shaped settling cylinder 6 is discharged through the coal slime outlet 9, and clarified water overflows from the upper part and is discharged through the overflow outlet 11. A coal slime outlet 9 is provided at the bottom of the funnel-shaped settling cylinder 6, and a valve is provided on the coal slime outlet 9. The reason for setting the funnel-shaped settling cylinder 6 at the bottom of the settling shell 1 is to quickly collect the settled peat and make the collected peat quickly discharged at the coal slime outlet 9. The valve can be a manual valve or an electric valve, which is not limited here.

[0045] Specifically, a water distribution pipe is horizontally arranged in the sedimentation shell 1 located below the smallest vortex flocculation structure, one end of the water distribution pipe is connected to the water inlet pipe 7, and the other end of the water distribution pipe 7 is sealed. A plurality of water distribution holes are provided on the water distribution pipe, which is beneficial to uniform water discharge from the water inlet pipe of the flocculant-containing coal sludge water.

[0046] Specifically, the water outlet directions of the multiple water distribution holes are perpendicular to the direction of the water distribution pipes, providing a uniform upward flow of water.

[0047] Example

[0048] like Figure 1 As shown, when the multi-stage vortex flocculation structure provided by the present invention is three levels, the vortex flocculation structure includes a primary vortex flocculation structure 2, a secondary vortex flocculation structure 3 and a tertiary vortex flocculation structure 4 which are sequentially arranged in the sedimentation shell 1 from bottom to top, and the triangular face height of each triangular prism type spoiler 5 in the tertiary vortex flocculation structure 4 is required to be less than or equal to 15 cm. The triangular face height h1 of each triangular prism type spoiler 5 in the primary vortex flocculation structure 2 is calculated by the formula h1=(10d-0.046) / 0.0067. The triangular face height h2 of each triangular prism type spoiler 5 in the secondary vortex flocculation structure 3 is calculated by the formula, h2=h1+(h3-h1) / (3-1)*(2-1).

[0049] Then, two triangular faces of the multiple triangular prism type spoilers 5 in each stage of the vortex flocculation structure are respectively connected to the inner wall of the sedimentation shell 1, wherein the triangular faces of each triangular prism type spoiler 5 in each stage of the vortex flocculation structure are the same height. In addition, the multiple triangular prism type spoilers 5 in each stage of the vortex flocculation structure are divided into multiple rows, the vertical central axes of the multiple triangular prism type spoilers 5 in the same column coincide, and the arrangement direction of the multiple triangular prism type spoilers 5 in each row is consistent.

[0050] When the coal sludge water is sent into the sedimentation shell 1 through the water inlet pipe 7, the coal sludge water containing flocculant will flow from bottom to top through the primary vortex flocculation structure 2, the secondary vortex flocculation structure 3 and the tertiary vortex flocculation structure 4, and then form a vortex on the upper part of the triangular prism type spoiler 5 in each level of the vortex flocculation structure, thereby promoting the collision and adhesion of solid particles in the coal sludge water in this area, wherein when the formed flocs meet the sedimentation conditions, they will descend along the inclined surface of the triangular prism type spoiler 5; when the formed flocs are loose and not dense and do not meet the sedimentation conditions, the flocs will not descend along the inclined surface of the triangular prism type spoiler 5 of this level, but will continue to rise to the vortex flocculation structure of the adjacent level, and continue to settle at the triangular prism type spoiler 5 of this level, when the flocs rise to the tertiary vortex flocculation structure 4, they will descend through the inclined surfaces of the triangular prism type spoilers 5 in the tertiary vortex flocculation structure 4.

[0051] Since the triangular prism type spoilers 5 of two adjacent rows in the same-level vortex flocculation structure are arranged in a staggered manner, the particles settled by the triangular prism type spoilers 5 of the upper layer can be deposited on the inclined surface of the triangular prism type spoilers 5 of the lower layer. Since the inclination angle of the inclined surface is large enough, under the action of gravity and inertia, part of the flocs will gradually move to the lower right under the guidance of the inclined surface. Since the coal discharge channel 10 is provided in the sedimentation shell 1, the settled coal sludge flocs settled by the secondary vortex flocculation structure 3 gradually slide along the inclined surfaces of the multiple triangular prism type spoilers 5 in the secondary vortex flocculation structure 3 and are gradually enriched in the coal discharge channel 10 and settled to the bottom. Compared with the direct sedimentation of the flocs in the vortex area, this design can reduce the probability of floc fragmentation. The coal discharge channel 10 can collect most of the flocs settled by the secondary vortex flocculation structure 3 and the tertiary vortex flocculation structure 4. Moreover, the flocs are settled to the bottom from the right side, which can also reduce the fragmentation caused by the interference of the rising water.

[0052] In addition, the distance between the primary vortex flocculation structure 2 and the secondary vortex flocculation structure 3 is the triangular surface height of the triangular prism type spoiler 5 in the primary vortex flocculation structure 2 , and the distance between the secondary vortex flocculation structure 3 and the tertiary vortex flocculation structure 4 is the triangular surface height of the triangular prism type spoiler 5 in the secondary vortex flocculation structure 3 .

[0053] Since the overall height of each level of flocculation structure is H, the triangular prism type spoilers 5 in the primary vortex flocculation structure 2 are arranged in 6 rows, when the triangular face height of the triangular prism type spoilers 5 in the primary vortex flocculation structure 2 is twice the triangular face height of the triangular prism type spoilers 5 in the secondary vortex flocculation structure 3, the triangular prism type spoilers 5 in the secondary vortex flocculation structure 3 are arranged in 3 rows, and when the triangular face height of the triangular prism type spoilers 5 in the primary vortex flocculation structure 2 is three times the triangular face height of the triangular prism type spoilers 5 in the tertiary vortex flocculation structure 4, the triangular prism type spoilers 5 in the tertiary vortex flocculation structure 4 are arranged in 2 rows. The heights of the three coagulation zones are basically the same, which reserves sufficient residence time for the coal slurry water in the three flocculation zones without breaking.

[0054] The water settled by the multiple triangular prism-type spoilers 5 in the primary vortex flocculation structure 2, the secondary vortex flocculation structure 3 and the tertiary vortex flocculation structure 4 rises to the top of the sedimentation shell 1, and flows out through the overflow outlet 11 provided on the top of the sedimentation shell 1. The outflowing water is detected by the turbidity meter 8 to detect the turbidity of the wastewater discharged from the overflow outlet 11, thereby judging the sedimentation performance.

[0055] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A device for quickly evaluating the flocculation and sedimentation performance of coal sludge water, comprising a sedimentation shell (1), wherein the sedimentation shell (1) is provided with a water inlet pipe (7) for conveying coal sludge water containing flocculant, characterized in that: Also includes: A multi-stage vortex flocculation structure, wherein the multi-stage vortex flocculation structure is sequentially arranged in a sedimentation shell (1) from bottom to top, a gap is arranged between two adjacent stages of the vortex flocculation structure, and each stage of the vortex flocculation structure comprises a plurality of triangular prism-type flow spoilers (5), each triangular prism-type flow spoiler (5) has two triangular faces, the two triangular faces are respectively connected to the inner wall of the sedimentation shell (1), the triangular faces of each triangular prism-type flow spoiler (5) in each stage of the vortex flocculation structure have the same height, and the triangular faces of each triangular prism-type flow spoiler (5) are arranged in a plurality of triangular prism-type flow spoilers (5) from bottom to top. The heights of the multiple triangular faces in the vortex flocculation structures of each level arranged in sequence increase in sequence, wherein the triangular face height h1 of the triangular prism type flow spoiler (5) in the vortex flocculation structure at the bottom level of the sedimentation shell (1) is calculated by the average particle size d of the coal slime raw material, and the calculation formula is: h1=(10d-0.046) / 0.0067; the triangular face height h1 of each triangular prism type flow spoiler (5) in the vortex flocculation structure at the top level of the sedimentation shell (1) is n ,h n Less than or equal to 15 cm, the triangular surface height h of each triangular prism-type flow disruptor (5) in the intermediate vortex flocculation structure of each level x , where x is any natural number between 2 and 6, and h x Through h1 and h n The calculation formula is: h x =h1+(h n -h1) / (n-1)*(x-1); The multiple triangular prism-shaped spoilers (5) in each stage of the vortex flocculation structure are divided into multiple rows, the vertical central axes of the multiple triangular prism-shaped spoilers (5) in the same row coincide, and the arrangement direction of the multiple triangular prism-shaped spoilers (5) in each row is consistent.

2. A device for rapid evaluation of coal sludge water flocculation and sedimentation performance according to claim 1, characterized in that: The three angles of the triangular face of the triangular prism-type spoiler (5) are: a base angle of 25° to 35°, a vertex angle of 15° to 20°, and an obtuse angle of 125° to 140°.

3. A device for rapid evaluation of flocculation and sedimentation performance of coal sludge water according to claim 2, characterized in that: The three angles of the triangular face of the triangular prism-type spoiler (5) are: a base angle of 30°, a vertex angle of 15° and an obtuse angle of 135°.

4. A device for rapid evaluation of flocculation and sedimentation performance of coal sludge water according to claim 1, characterized in that: The center distance between two adjacent triangular prism-type flow spoilers (5) in the same row in each stage of the vortex flocculation structure is 0.518 times the height of the triangular prism-type flow spoilers (5) located in the stage.

5. A device for rapid evaluation of flocculation and sedimentation performance of coal sludge water according to claim 1, characterized in that: The vortex flocculation structure comprises three levels of vortex flocculation structures arranged in sequence from bottom to top in a sedimentation shell (1), namely a primary vortex flocculation structure (2), a secondary vortex flocculation structure (3) and a tertiary vortex flocculation structure (4), and the triangular face height of each triangular prism-type flow disruptor (5) in the tertiary vortex flocculation structure is less than or equal to 15 cm.

6. A device for rapid evaluation of flocculation and sedimentation performance of coal sludge water according to claim 1, characterized in that: The interval height between the upper and lower adjacent vortex flocculation structures is the height of the triangular surface in the lower vortex flocculation structure between the upper and lower adjacent stages.

7. A device for rapid evaluation of flocculation and sedimentation performance of coal sludge water according to claim 1, characterized in that: The overall height of each level of flocculation structure is H, which is 30 cm to 40 cm. The number of rows of spoilers required for each level is obtained by rounding the ratio of the vortex zone height to the spoiler height.

8. A device for rapid evaluation of flocculation and sedimentation performance of coal sludge water according to claim 1, characterized in that: The bottom of the sedimentation shell (1) is provided with a baffle in the longitudinal direction, and the baffle divides the bottom of the sedimentation shell (1) into a flocculation sedimentation zone and a coal discharge channel (10). A plurality of triangular prism-type spoilers (5) are arranged in the flocculation sedimentation zone. The top of the coal discharge channel (10) is connected to the top of the vortex flocculation structure at the lowest level, and the bottom of the coal discharge channel (10) is connected to the bottom of the sedimentation shell (1).

9. A device for rapid evaluation of flocculation and sedimentation performance of coal sludge water according to claim 1, characterized in that: An overflow outlet (11) is provided on the top of the sedimentation shell (1), and a turbidity meter (8) is provided inside the overflow outlet (11). The turbidity meter (8) is used to detect the turbidity of the wastewater discharged from the overflow outlet (11).

10. A device for rapid evaluation of flocculation and sedimentation performance of coal sludge water according to claim 1, characterized in that: A water distribution pipe is provided in the sedimentation shell (1) below the minimum-stage vortex flocculation structure in the horizontal direction. The water distribution pipe is connected to the water inlet pipe (7). A plurality of water distribution holes are provided on the water distribution pipe.

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