Efficient and rapid solid-liquid separation fluidized bed device

Abstract

The utility model discloses an efficient and rapid solid-liquid separation fluidized bed device which comprises a tank body, a central rising barrel and a variable-frequency stirring assembly, the central rising barrel is of a hollow cylinder structure with an open upper surface, and is coaxially arranged in the tank body at intervals, and an annular solid-liquid separation area is defined by the central rising barrel; a pipeline mixer is arranged on the right side of the tank body, and the right end of the pipeline mixer is communicated with the water inlet, so that incoming water is mixed with a coagulant in the pipeline mixer; the left end of the pipeline mixer is hermetically communicated with the bottom of the central rising barrel through a water inlet pipe, and coagulated incoming water and a coagulant aid are fed into the central rising barrel; a variable-frequency stirring assembly is arranged in the central rising barrel, the rising flow speed is controlled by adjusting the rotating speed of the variable-frequency stirring assembly, floc particles flow upwards, a suspended sludge layer is formed in the tank body and right above the central rising barrel, and clear water and solid particles are separated in the solid-liquid separation area. The device can increase the particle size of floc particles, and meanwhile, the effective density is kept constant.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a high-efficiency and rapid solid-liquid separation fluidized bed device. Background Art

[0002] In the water treatment process, the removal of suspended pollutants can be achieved through solid-liquid separation technology. During the separation process, some dissolved pollutants also need to be effectively removed. Therefore, efficient and rapid solid-liquid separation is one of the main goals of water treatment.

[0003] In the traditional treatment process, for the removal of suspended pollutants, a combination of flocculation reaction tank + clarification tank is generally used for solid-liquid separation. Although the process has achieved certain results, it still has many disadvantages: 1) The reaction tank turns over and the effluent turbidity is unstable; 2) A large amount of drugs are required to achieve the effect of removing pollutants; 3) A large area is required. The traditional process requires flocculation and sedimentation. The flocs are loose and have low structural density. The separation time is long and the efficiency is low; 4) The amount of sludge solid residue is large and needs to be continued for subsequent treatment; 5) The clarification tank forms a high-density, large-particle floc suspension layer in the lower part of the inclined tube area, but the flocculation area occupies a large area and has many auxiliary equipment, making it difficult to achieve integrated miniaturization.

[0004] Solid-liquid separation is an indispensable part of water treatment technology. The factors that affect the particle settling rate include particle size and effective density. Therefore, how to increase particle size and effective density to improve the effect of solid-liquid separation and achieve efficient and rapid solid-liquid separation has become a difficult problem that needs to be solved urgently. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a high-efficiency and fast solid-liquid separation fluidized bed device, which can efficiently and quickly increase the particle size of the flocculent particles by changing the growth mode of the flocculent particles, while keeping the density constant or occasionally reducing it under the limit state, thereby improving the solid-liquid separation effect.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: the utility model is an efficient and rapid solid-liquid separation fluidized bed device, and its innovation lies in: comprising a tank body, a top cover, a central rising barrel, a water inlet pipe, a pipeline mixer and a variable frequency stirring assembly; the top cover and the tank body are aligned and fitted up and down, and the two are sealed and screwed to form a vertically arranged hollow cavity; the central rising barrel is a hollow cylindrical structure with an open upper surface, and is coaxially arranged at an interval in the middle position of the interior of the tank body, and forms an annular solid-liquid separation area with the tank body; on the right side of the tank body, relative to the bottom of the central rising barrel, a pipeline mixer is also arranged horizontally along its radial direction. The pipeline mixer is connected with the water inlet at the right end, so that the incoming water is mixed with the coagulant in the pipeline mixer; the left end of the pipeline mixer is sealed and connected with the bottom of the central rising barrel through the water inlet pipe, and the coagulated incoming water and the coagulant aid are sent into the central rising barrel; a variable frequency stirring component is also provided in the central rising barrel, and the rising flow rate is controlled by adjusting the speed of the variable frequency stirring component, the flocculent particle water flows upward, and forms a suspended sludge layer inside the tank body relative to the center rising barrel, the clean water and the solid particles are separated in the solid-liquid separation zone, and the clean water is discharged upward through the suspended sludge layer, and the solid particles settle to the bottom of the tank body by gravity.

[0007] Preferably, a PAC dosing pipe is provided on the water inlet side of the pipeline mixer, and coagulant is added into the pipeline mixer through the PAC dosing pipe, and by reasonably controlling the amount of coagulant added, tiny flocs with small particle size and high density are formed.

[0008] Preferably, the left end of the pipeline mixer is coaxially sealed and connected with the right end of the water inlet pipe, and the left end of the water inlet pipe extends vertically into the interior of the tank body, and then upwardly connects coaxially and sealably with the bottom center of the central rise barrel, and further connects with the interior of the central rise barrel.

[0009] Preferably, it also includes a PAM dosing pipe; a PAM dosing pipe is also horizontally arranged along the radial direction on the right side of the tank body relative to directly above the water inlet pipe, one end of the PAM dosing pipe vertically extends to the interior of the tank body, and is arranged without interfering with the central rising barrel, and is vertically downwardly connected to the water inlet pipe in a sealed manner, and then a coagulant is added to the incoming water after coagulation, thereby increasing the mutual bonding strength between the original particles to ensure that the micro-floc particles can adhere to the mother floc particles one by one.

[0010] Preferably, the variable frequency stirring assembly includes a variable frequency motor, a coupling, a stirring shaft, a fixing seat and a stirring blade; a variable frequency motor is also vertically arranged in the middle position of the upper surface of the top cover, and the output end of the variable frequency motor extends vertically downward to the interior of the top cover, and is coaxially linked with the upper end of the vertically arranged stirring shaft through a coupling; the lower end of the stirring shaft extends vertically downward coaxially to the interior of the central rising barrel near its bottom, and under the drive of the variable frequency motor, the stirring shaft rotates around its own axis, and ensures that the central rising barrel does not interfere with the rotation of the stirring shaft; a plurality of stirring layers are also arranged in sequence from top to bottom on the outer circumferential surface of the stirring shaft, and on each of the stirring layers Several stirring blades are evenly distributed and inclined at intervals in the mixing layer along its circumferential direction. Each of the stirring blades is arranged in parallel and inclined downward in the outward direction, and its fixed ends are respectively sleeved in the corresponding fixing seats. After being screwed and fixed by bolts, each of the fixing seats is respectively fixedly connected to the corresponding position of the outer circumferential surface of the stirring shaft, thereby connecting the stirring blade and the stirring shaft together; the other end of each stirring blade is respectively arranged with the inner wall of the central rising barrel without interfering with each other, and the coagulated incoming water and the coagulant aid are stirred and mixed in the central rising barrel by the drive of the variable frequency motor, and the rising flow rate is controlled by adjusting the speed of the variable frequency motor, so that the flocculent particle water flows upward to form a suspended sludge layer.

[0011] Preferably, a water outlet pipe is vertically provided on the upper surface of the top cover relative to the left side of the variable frequency motor, and the lower end of the water outlet pipe is sealed and connected to the interior of the top cover, so that the clean water that has passed through the suspended mud layer is discharged through the water outlet pipe; the inner bottom surface of the tank body is an inner conical surface inclined downward toward its center, and a mud discharge pipe is vertically provided in the middle position of the lower surface of the tank body, and the upper end of the mud discharge pipe is sealed and connected to the interior of the tank body, and the settled solid particles are discharged through the mud discharge pipe.

[0012] Preferably, a suspended sludge layer sampling port is provided on the right outer side surface of the tank body relative to the position of the suspended sludge layer, and a solid-liquid separation sampling port is provided on the right outer side surface of the tank body at an upper position relative to the solid-liquid separation area, and a sludge discharge sampling port is provided on the sludge discharge pipe relative to the outside of the tank body, thereby facilitating data sampling and detection at each stage.

[0013] Preferably, manholes are provided on the left outer side surface of the tank body relative to the bottom position of the central rising barrel, and on the upper surface of the top cover relative to the right side of the frequency conversion motor, so as to facilitate the maintenance of the device through the manhole; four lifting ears are provided in a rectangular and vertically symmetrical manner on the upper surface of the top cover relative to the water outlet pipe and the outer side of the corresponding manhole, so as to lift the device or the top cover through the manhole; sight glasses are provided on the front surface of the tank body relative to the position of the solid-liquid separation area and the position of the suspended sludge layer, and whether the suspended sludge layer meets the operating effect and whether the solid-liquid separation area achieves the effect is observed through the sight glasses; differential pressure transmitters are provided on the water inlet pipe relative to the external position of the tank body and on the water outlet pipe relative to the external position of the top cover, so as to perform remote monitoring through the inlet and outlet pressure differential.

[0014] Preferably, it also includes a drain pipe, a support plate, a guide plate, a limit plate and a pin; a drain pipe is also horizontally provided along the radial direction of the right outer side surface of the tank body relative to the water inlet pipe just below it, and the drain pipe is sealed and connected to the inside of the tank body; a support plate is also horizontally provided on the right inner side surface of the tank body relative to the lower edge of the drain pipe, and the support plate is fixedly connected to the corresponding inner side surface of the tank body; a guide plate is also obliquely provided on the upper surface of the support plate, and the inclination angle of the guide plate is 2°~4°; the lower end of the guide plate is sealed tightly against the junction of the drain pipe and the support plate, and its upper end is inclined toward The tank body is sealed and extends out in the upper left direction; limit plates are symmetrically provided on the upper and lower sides of the guide plate beyond the tank body, and each of the limit plates is fixedly connected to the corresponding position of the outer surface of the tank body; a pin is vertically provided in the middle position of the upper surface of the upper limit plate, and the lower end of the pin vertically penetrates the upper limit plate, the guide plate and the lower limit plate in sequence downward, and limits the pulling and pulling action of the guide plate, so as to perform secondary solid-liquid separation on the settled solid particles on the guide plate, and the separated liquid is discharged through the drain pipe, while the solid particles remain on the guide plate.

[0015] Preferably, it also includes a scraper plate and a hinge; a scraper plate is obliquely provided at the junction of the upper end of the guide plate and the corresponding inner side surface of the tank body, the scraper plate is a rectangular structure matching the width of the guide plate, and its upper edges are rotatably connected to the corresponding inner side surfaces of the tank body through hinges, the lower edge of the scraper plate overlaps the upper surface of the guide plate, and in the process of pulling the guide plate upward, the solid particles on the guide plate are scraped to the bottom of the tank body through the scraper plate.

[0016] Beneficial effects of the utility model:

[0017] (1) The utility model can efficiently and quickly increase the particle size of floc particles by changing the growth mode of floc particles, while keeping their density constant or occasionally decreasing under extreme conditions, thereby improving the solid-liquid separation effect;

[0018] (2) The utility model is provided with a variable frequency stirring component, and the speed can be adjusted according to the on-site conditions and the corresponding water quality, so as to better control the rising flow rate, form a suspended mud layer to further filter the water quality, and improve the effect of the effluent water quality. It also has a good treatment effect on extremely high turbidity, low temperature and low turbidity water quality;

[0019] (3) The stirring blade of the utility model adopts an inclined design, which can effectively increase the stirring range and improve the stirring effect; at the same time, the stirring blade and the fixing seat are screwed together, which is convenient for disassembly and replacement of the stirring blade;

[0020] (4) The utility model requires less dosage, occupies less area, has less auxiliary equipment, and has better treatment effect;

[0021] (5) The utility model can remotely detect the inlet and outlet pressure difference by arranging pressure transmitters on the water inlet and outlet pipes, without the need for on-site inspection by personnel, thus improving efficiency and reducing labor costs, thereby achieving better results;

[0022] (6) The utility model facilitates secondary solid-liquid separation of solid particles through the coordinated use of the guide plate and the scraper plate, thereby improving the separation effect;

[0023] (7) The utility model is provided with a sight glass, which facilitates observation of whether the suspended sludge layer meets the operating effect and whether the solid-liquid separation zone achieves the effect;

[0024] (8) The utility model provides a manhole, which facilitates the maintenance of the entire device and improves the maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a structural schematic diagram of a high-efficiency and rapid solid-liquid separation fluidized bed device of the utility model.

[0027] Figure 2 for Figure 1 Schematic diagram of the internal structure.

[0028] Among them, 1-tank body; 2-top cover; 3-water inlet; 4-pipe mixer; 5-PAC dosing pipe; 6-PAM dosing pipe; 7-water inlet pipe; 8-center rising barrel; 9-suspended mud layer; 10-water outlet pipe; 11-solid-liquid separation area; 12-frequency conversion motor; 13-stirring shaft; 14-fixed seat; 15-stirring blade; 16-mud discharge pipe; 17-mud discharge sampling port; 18-solid-liquid separation sampling port; 19-suspended mud layer sampling port; 20-lifting ear; 21-pressure transmitter; 22-manhole; 23-sight glass; 24-drainage pipe; 25-support plate; 26-guide plate; 27-scraper plate; 28-limiting plate; 29-pin shaft. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be clearly and completely described below through specific implementation methods.

[0030] The utility model discloses a high-efficiency and fast solid-liquid separation fluidized bed device, comprising a tank body 1, a top cover 2, a central riser 8, a water inlet pipe 7, a pipeline mixer 4 and a variable frequency stirring assembly; the specific structure is as follows Figure 1 , Figure 2 As shown, the top cover 2 and the tank body 1 are aligned and fitted together, and the two are sealed and screwed to form a vertically arranged hollow cavity; the central rising barrel 8 is a hollow cylindrical structure with an open upper surface, and is coaxially arranged at an interval in the middle position of the tank body 1, and forms an annular solid-liquid separation area 11 with the tank body 1; a pipeline mixer 4 is also horizontally arranged along the radial direction on the right side of the tank body 1 relative to the bottom of the central rising barrel 8, and the right end of the pipeline mixer 4 is connected to the water inlet 3, so that the incoming water is mixed with the coagulant in the pipeline mixer 4; wherein, a PAC dosing pipe 5 is also provided on the pipeline mixer 4 on the side close to the water inlet 3, and a coagulant is added into the pipeline mixer 4 through the PAC dosing pipe 5 to destabilize the suspended or colloidal particles in the water, and by reasonably controlling the amount of coagulant, small-size and high-density micro-flocculation is formed. The utility model needs to pay attention to the dosage of coagulant. If it is too high, the micro-flocculation will grow excessively, resulting in a significant increase in the void ratio, a decrease in density, and an increase in operating costs. If it is too low, the original particles cannot reach the quasi-destabilized state, the rejection barrier is high, the device operates poorly, and the effluent turbidity is poor.

[0031] like Figure 1 , Figure 2 As shown, the left end of the pipeline mixer 4 is coaxially sealed and connected with the right end of the water inlet pipe 7, and the left end of the water inlet pipe 7 extends vertically to the interior of the tank body 1, and then upwardly connects with the bottom center of the central riser 8 in a coaxial sealed manner, and then connects with the interior of the central riser 8, and delivers the coagulated incoming water and the coagulant aid into the central riser 8.

[0032] Among them, a PAM dosing pipe 6 is also provided horizontally along the radial direction on the right side of the tank body 1 relative to the water inlet pipe 7, one end of the PAM dosing pipe 6 extends vertically to the inside of the tank body 1, and is arranged without interfering with the central riser 8, and is vertically downwardly connected to the water inlet pipe 7 in a sealed manner, and then a coagulant is added to the coagulated incoming water to improve the mutual bonding strength between the original particles, and ensure that the micro-floc particles can be attached to the mother floc particles one by one, thereby increasing the particle size of the floc particles. The utility model needs to pay attention to the amount of coagulant added. If it is too high, the micro-flocs will be stabilized, the device cannot operate efficiently and normally, the effluent water quality is poor, and the operating cost is correspondingly increased; if it is too low, the strength is low, the bonding force is small, and the treatment effect is poor.

[0033] The utility model also has a variable frequency stirring assembly in the central rising barrel 8, and the rising flow rate is controlled by adjusting the speed of the variable frequency stirring assembly, and the flocculent particles flow upward, and a suspended mud layer 9 is formed inside the tank body 1 just above the central rising barrel 8; wherein the variable frequency stirring assembly includes a variable frequency motor 12, a coupling, a stirring shaft 13, a fixing seat 14 and a stirring blade 15; Figure 1 , Figure 2 As shown, a variable frequency motor 12 is vertically arranged in the middle of the upper surface of the top cover 2, and the output end of the variable frequency motor 12 extends vertically downward to the inside of the top cover 2, and is coaxially linked with the upper end of the vertically arranged stirring shaft 13 through a coupling; the lower end of the stirring shaft 13 extends vertically downward coaxially to the inside of the central rising barrel 8 near its bottom, and under the drive of the variable frequency motor 12, the stirring shaft 13 rotates around its own axis, and ensures that the central rising barrel 8 does not interfere with the rotation of the stirring shaft 13;

[0034] like Figure 1 , Figure 2As shown, several stirring layers are arranged in sequence from top to bottom on the outer circumferential surface of the stirring shaft 13, and several stirring blades 15 are evenly spaced and inclined along the circumferential direction in each stirring layer, each stirring blade 15 is arranged parallel and inclined downward in the outward direction, and its fixed end is respectively sleeved in the corresponding fixing seat 14, and after being screwed and fixed by bolts, each fixing seat 14 is respectively fixedly connected to the corresponding position of the outer circumferential surface of the stirring shaft 13, thereby connecting the stirring blade 15 and the stirring shaft 13 together; the other end of each stirring blade 15 is respectively arranged without interfering with the inner wall of the central rising barrel 8, and the coagulated incoming water and the coagulant aid are stirred and mixed in the central rising barrel 8 by the drive of the variable frequency motor 12, and the rising flow rate is controlled by adjusting the speed of the variable frequency motor 12, so that the flocculent particle water flows upward, and a suspended sludge layer 9 is formed inside the tank body 1 directly above the central rising barrel 8. The utility model sets a variable frequency stirring component so that the flocs shrink after dehydration, which can greatly reduce the gap between each original particle constituting the flocs, so that the original particles are attached to the same type of mother flocs one by one in an orderly manner, so that the flocs can grow into the most compact structure quickly and efficiently, and then the clean water and the solid particles are separated efficiently and quickly in the solid-liquid separation area 11, the clean water is discharged upward through the suspended sludge layer 9, and the solid particles are settled to the bottom of the tank 1 by gravity.

[0035] like Figure 1 , Figure 2 As shown, a water outlet pipe 10 is vertically provided on the upper surface of the top cover 2 relative to the left side of the variable frequency motor 12, and the lower end of the water outlet pipe 10 is sealed and connected to the interior of the top cover 2, so that the clean water that passes through the suspended mud layer 9 is discharged through the water outlet pipe 10; the inner bottom surface of the tank body 1 is an inner conical surface inclined downward toward its center, and a mud discharge pipe 16 is vertically provided in the middle position of the lower surface of the tank body 1, and the upper end of the mud discharge pipe 16 is sealed and connected to the interior of the tank body 1, and the settled solid particles are discharged through the mud discharge pipe 16.

[0036] like Figure 1 , Figure 2 As shown, a suspended sludge layer sampling port 19 is provided on the right outer side surface of the tank body 1 relative to the suspended sludge layer 9, a solid-liquid separation sampling port 18 is provided on the right outer side surface of the tank body 1 at an upper position relative to the solid-liquid separation zone 11, and a sludge discharge sampling port 17 is provided on the sludge discharge pipe 16 relative to the outside of the tank body 1, thereby facilitating data sampling and detection at each stage.

[0037] like Figure 1 , Figure 2As shown, manholes 22 are provided on the left outer side surface of the tank body 1 relative to the bottom position of the central rising barrel 8, and on the upper surface of the top cover 2 relative to the right side of the variable frequency motor 12, so that the device can be easily inspected and repaired through the manhole 22; four lifting ears 20 are provided in a rectangular and vertically symmetrical manner on the upper surface of the top cover 2 relative to the water outlet pipe 10 and the outer side of the corresponding manhole 22, so that the device or the top cover 2 can be lifted through the manhole 22; sight glasses 23 are provided on the front surface of the tank body 1 relative to the position of the solid-liquid separation zone 11 and the position of the suspended sludge layer 9, and the sight glasses 23 are used to observe whether the suspended sludge layer 9 meets the operating effect and whether the solid-liquid separation zone 11 achieves the effect; differential pressure transmitters are provided on the water inlet pipe 7 relative to the external position of the tank body 1, and on the water outlet pipe 10 relative to the external position of the top cover 2, so as to perform remote monitoring through the inlet and outlet pressure differences.

[0038] The utility model also has a drain pipe 24 disposed horizontally along the radial direction on the right outer side of the tank body 1 relative to the water inlet pipe 7 just below the water inlet pipe 7, and the drain pipe 24 is sealed and connected to the inside of the tank body 1; Figure 1 , Figure 2 As shown, a support plate 25 is horizontally provided on the right inner side surface of the tank body 1 relative to the lower edge of the discharge pipe 24, and the support plate 25 is fixedly connected to the corresponding inner side surface of the tank body 1; a guide plate 26 is obliquely provided on the upper surface of the support plate 25, and the inclination angle of the guide plate 26 is 2°~4°; the lower end of the guide plate 26 is sealed against the junction of the discharge pipe 24 and the support plate 25, and the upper end thereof is obliquely extended to the upper left direction to seal out of the tank body 1; limit plates 26 are symmetrically provided on the upper and lower sides of the guide plate 26 that exceeds the tank body 1 8, and each limit plate 28 is fixedly connected to the corresponding position of the outer side surface of the tank body 1; a pin shaft 29 is also vertically provided in the middle position of the upper surface of the upper limit plate 28, and the lower end of the pin shaft 29 vertically downwardly penetrates the upper limit plate 28, the guide plate 26 and the lower limit plate 28 in sequence, and limits the pulling and pulling action of the guide plate 26, so that the settled solid particles are automatically separated from the solid and liquid on the guide plate 26, and the separated liquid is discharged through the drain pipe 24, while the solid particles remain on the guide plate 26.

[0039] like Figure 1 , Figure 2 As shown, a scraper plate 27 is obliquely provided at the junction of the upper end of the guide plate 26 and the corresponding inner side surface of the tank body 1. The scraper plate 27 is a rectangular structure matching the width of the guide plate 26, and its upper edges are rotatably connected to the corresponding inner side surfaces of the tank body 1 through hinges, and the lower edges of the scraper plate 27 overlap the upper surface of the guide plate 26, and in the process of pulling the guide plate 26 upward, the solid particles on the guide plate 26 are scraped to the bottom of the tank body 1 through the scraper plate 27.

[0040] The working principle of this utility model:

[0041] First, the suspended or colloidal particles in the water are destabilized by adding coagulants, and the amount of coagulants is reasonably controlled to form small flocs with small particle size and high density, and at the same time, they are arranged regularly one by one under the action of external conditions;

[0042] Then, by adding coagulant aids to the coagulated water, the mutual bonding strength between the original particles is increased, ensuring that the micro-floc particles can be attached to the mother floc particles one by one, so that the floc particle size can be increased, and the void ratio can be kept constant. As a result, the floc particle shape gradually tends to be spherical under the action of external force, and at the same time, it is ensured that the original particles have sufficient bonding strength inside; avoid mutual bonding between micro-floc particles, so as to combine into a high-concentration, large-size suspended group;

[0043] Then the coagulated water and the coagulant aid enter the central rising barrel 8, and the frequency conversion motor 12 adjusts the speed according to the on-site conditions and the corresponding water quality to better control the rising flow rate, and the flocculent particles flow upward, forming a suspended mud layer 9 inside the tank body 1 just above the central rising barrel 8; under the action of the frequency conversion stirring component, the clean water and the solid particles are efficiently and quickly separated in the solid-liquid separation area 11, and the clean water passes through the suspended mud layer 9 and is discharged upward through the outlet pipe 10, and the solid particles settle on the guide plate 26 by gravity for secondary solid-liquid separation, and the liquid is discharged through the discharge pipe 24;

[0044] Then, the pin shaft 29 is pulled up, the guide plate 26 is pulled out, and with the cooperation of the scraper plate 27, the solid particles on the guide plate 26 after the secondary solid-liquid separation are scraped to the bottom of the tank body 1 and then discharged through the mud discharge pipe 16.

[0045] Beneficial effects of the utility model:

[0046] (1) The utility model can efficiently and quickly increase the particle size of floc particles by changing the growth mode of floc particles, while keeping their density constant or occasionally decreasing under extreme conditions, thereby improving the solid-liquid separation effect;

[0047] (2) The utility model is provided with a variable frequency stirring assembly, and the speed can be adjusted according to the on-site conditions and the corresponding water quality, so as to better control the rising flow rate, form a suspended sludge layer 9 to further filter the water quality, and improve the effect of the effluent water quality. It also has a good treatment effect on extremely high turbidity, low temperature and low turbidity water quality;

[0048] (3) The stirring blade 15 of the utility model adopts an inclined design, which can effectively increase the stirring range and improve the stirring effect; at the same time, the stirring blade 15 and the fixing seat 14 are screwed together, which is convenient for disassembly and replacement of the stirring blade 15;

[0049] (4) The utility model requires less dosage, occupies less area, has less auxiliary equipment, and has better treatment effect;

[0050] (5) The utility model can remotely detect the inlet and outlet pressure difference by arranging the pressure transmitter 21 on the water inlet pipe 7 and the water outlet pipe 10, without the need for on-site inspection by personnel, thus improving efficiency and reducing labor costs, thereby achieving better results;

[0051] (6) The utility model facilitates secondary solid-liquid separation of solid particles through the coordinated use of the guide plate 26 and the scraper plate 27, thereby improving the separation effect;

[0052] (7) The utility model provides a viewing mirror 23 to facilitate observation of whether the suspended sludge layer 9 meets the operating effect and whether the solid-liquid separation zone 11 achieves the effect;

[0053] (8) The utility model provides a manhole 22, which facilitates the maintenance of the entire device and improves the maintenance efficiency.

[0054] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. An efficient and rapid solid-liquid separation fluidized bed device, characterized in that: The invention comprises a tank body, a top cover, a central rising barrel, a water inlet pipe, a pipeline mixer and a variable frequency stirring assembly; the top cover is aligned and fitted with the tank body up and down, and the two are sealed and screwed to form a vertically arranged hollow cavity; the central rising barrel is a hollow cylindrical structure with an open upper surface, and is coaxially arranged at intervals in the middle position of the tank body, and forms an annular solid-liquid separation area with the tank body; a pipeline mixer is also horizontally arranged along the radial direction of the right side of the tank body relative to the bottom of the central rising barrel, and the right end of the pipeline mixer is connected to the water inlet, so that water can flow in the pipe. The water is mixed with the coagulant in the pipeline mixer; the left end of the pipeline mixer is sealed and connected with the bottom of the central rising barrel through the water inlet pipe, and the coagulated water and the coagulant aid are sent to the central rising barrel; a variable frequency stirring component is also provided in the central rising barrel, and the rising flow rate is controlled by adjusting the speed of the variable frequency stirring component, the flocculent particle water flows upward, and forms a suspended sludge layer inside the tank body relative to the center rising barrel, the clean water and the solid particles are separated in the solid-liquid separation area, and the clean water is discharged upward through the suspended sludge layer, and the solid particles settle to the bottom of the tank body by gravity.

2. The high-efficiency and rapid solid-liquid separation fluidized bed device according to claim 1, characterized in that: A PAC dosing pipe is also provided on the side of the pipeline mixer close to the water inlet, and coagulant is added into the pipeline mixer through the PAC dosing pipe, and by reasonably controlling the amount of coagulant added, tiny flocs with small particle size and high density are formed.

3. The high-efficiency and rapid solid-liquid separation fluidized bed device according to claim 1, characterized in that: The left end of the pipeline mixer is coaxially sealed and connected to the right end of the water inlet pipe, and the left end of the water inlet pipe extends vertically to the interior of the tank body, and then upwardly connects to the bottom center of the central riser barrel coaxially and sealed, and then connects to the interior of the central riser barrel.

4. The high-efficiency and rapid solid-liquid separation fluidized bed device according to claim 3, characterized in that: It also includes a PAM dosing pipe; a PAM dosing pipe is also horizontally arranged along the radial direction on the right side of the tank body, directly above the water inlet pipe; one end of the PAM dosing pipe vertically extends to the interior of the tank body, and is arranged without interfering with the central rising barrel, and is vertically downwardly connected to the water inlet pipe in a sealed manner, so as to add a coagulant to the coagulated incoming water, thereby increasing the mutual bonding strength between the original particles, thereby ensuring that the micro-floc particles can be attached to the mother floc particles one by one.

5. The high-efficiency and rapid solid-liquid separation fluidized bed device according to claim 3, characterized in that: The variable frequency stirring assembly includes a variable frequency motor, a coupling, a stirring shaft, a fixing seat and a stirring blade; a variable frequency motor is also vertically arranged in the middle position of the upper surface of the top cover, and the output end of the variable frequency motor extends vertically downward to the inside of the top cover, and is coaxially linked with the upper end of the vertically arranged stirring shaft through a coupling; the lower end of the stirring shaft extends vertically downward coaxially to the inside of the central rising barrel near its bottom, and under the drive of the variable frequency motor, the stirring shaft rotates around its own axis, and ensures that the central rising barrel does not interfere with the rotation of the stirring shaft; a plurality of stirring layers are also arranged in sequence from top to bottom on the outer circumferential surface of the stirring shaft, and in each of the stirring layers A number of stirring blades are evenly spaced and inclined along the circumferential direction thereof, each of the stirring blades is arranged in parallel and inclined downward toward the outside, and the fixed ends thereof are respectively sleeved in the corresponding fixing seats, and after being screwed and fixed by bolts, each of the fixing seats is respectively fixedly connected to the corresponding positions of the outer circumferential surface of the stirring shaft, thereby connecting the stirring blade and the stirring shaft together; the other end of each stirring blade is respectively arranged with the inner wall of the central rising barrel without interfering with each other, and driven by the variable frequency motor, the coagulated incoming water and the coagulant aid are stirred and mixed in the central rising barrel, and the rising flow rate is controlled by adjusting the speed of the variable frequency motor, so that the flocculent particle water flows upward to form a suspended sludge layer.

6. The high-efficiency and rapid solid-liquid separation fluidized bed device according to claim 5, characterized in that: A water outlet pipe is vertically provided on the upper surface of the top cover relative to the left side of the variable frequency motor, and the lower end of the water outlet pipe is sealed and connected to the interior of the top cover, so that the clean water that has passed through the suspended mud layer is discharged through the water outlet pipe; the inner bottom surface of the tank body is an inner conical surface inclined downward toward its center, and a mud discharge pipe is vertically provided in the middle position of the lower surface of the tank body, and the upper end of the mud discharge pipe is sealed and connected to the interior of the tank body, and the settled solid particles are discharged through the mud discharge pipe.

7. The high-efficiency and rapid solid-liquid separation fluidized bed device according to claim 6, characterized in that: A suspended sludge layer sampling port is provided on the right outer side surface of the tank body relative to the position of the suspended sludge layer, a solid-liquid separation sampling port is provided on the right outer side surface of the tank body slightly above the solid-liquid separation area, and a sludge discharge sampling port is provided on the sludge discharge pipe relative to the outside of the tank body, thereby facilitating data sampling and detection at each stage.

8. The high-efficiency and rapid solid-liquid separation fluidized bed device according to claim 6, characterized in that: Manholes are provided on the left outer side surface of the tank body relative to the bottom of the central rising barrel, and on the upper surface of the top cover relative to the right side of the variable frequency motor, so that the device can be easily inspected and repaired through the manholes; four lifting ears are vertically symmetrically provided in a rectangular shape on the upper surface of the top cover relative to the water outlet pipe and the outer side of the corresponding manhole, so that the device or the top cover can be lifted through the manholes; sight glasses are provided on the front surface of the tank body relative to the solid-liquid separation area and the suspended sludge layer, and whether the suspended sludge layer meets the operating effect and whether the solid-liquid separation area achieves the effect is observed through the sight glasses; differential pressure transmitters are provided on the water inlet pipe relative to the outside of the tank body and on the water outlet pipe relative to the outside of the top cover, so that remote monitoring can be performed through the inlet and outlet pressure differences.

9. The high-efficiency and rapid solid-liquid separation fluidized bed device according to claim 3, characterized in that: It also includes a drain pipe, a support plate, a guide plate, a limit plate and a pin shaft; a drain pipe is also horizontally arranged along the radial direction of the right outer side surface of the tank body relative to the water inlet pipe just below it, and the drain pipe is sealed and connected to the inside of the tank body; a support plate is also horizontally arranged at the right inner side surface of the tank body relative to the lower edge of the drain pipe, and the support plate is fixedly connected to the corresponding inner side surface of the tank body; a guide plate is also obliquely arranged on the upper surface of the support plate, and the inclination angle of the guide plate is 2°~4°; the lower end of the guide plate is sealed and pressed against the junction of the drain pipe and the support plate, and its upper end is inclined to the upper left The direction seal extends out of the tank body; limit plates are symmetrically provided on the upper and lower sides of the guide plate beyond the tank body, and each of the limit plates is fixedly connected to the corresponding position of the outer surface of the tank body; a pin is vertically provided in the middle position of the upper surface of the upper limit plate, and the lower end of the pin vertically penetrates the upper limit plate, the guide plate and the lower limit plate in sequence downward, and limits the pulling and pulling action of the guide plate, so as to perform secondary solid-liquid separation on the settled solid particles on the guide plate, and the separated liquid is discharged through the drain pipe, while the solid particles remain on the guide plate.

10. The high-efficiency and rapid solid-liquid separation fluidized bed device according to claim 9, characterized in that: It also includes a scraper plate and a hinge; a scraper plate is obliquely provided at the junction of the upper end of the guide plate and the corresponding inner side surface of the tank body, the scraper plate is a rectangular structure matching the width of the guide plate, and its upper side edges are rotatably connected to the corresponding inner side surfaces of the tank body through hinges, the lower side edges of the scraper plate overlap the upper surface of the guide plate, and in the process of pulling the guide plate upward, the solid particles on the guide plate are scraped to the bottom of the tank body through the scraper plate.

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