Flocculation cyclone

Abstract

The invention discloses a flocculation cyclone, and relates to the technical field of water treatment, the flocculation cyclone comprises cyclone barrels, top openings are formed in the exteriors of the cyclone barrels at the foremost end and the tail end, and a bottom opening and a top opening are formed in the exterior of the cyclone barrel at the middle part; tangent water inlet flow regulation and control mechanisms are installed between every two adjacent sets of bottom openings and between every two adjacent sets of top openings. The bottom of the inner side of the rotational flow barrel is fixedly connected with a mud return cone, the outer part of the rotational flow barrel at the tail end is fixedly connected with a sedimentation tank, and the inner side of the rotational flow barrel at the tail end is provided with a flow breaking mechanism. The device adopts a plurality of groups of rotational flow barrel arrays, flow is regulated through a tangential water inlet regulation and control mechanism, high-shear gradient rotational flow is formed, a mud return cone returns settled flocculate with a speed gradient of zero to a high-shear gradient area, collision of the flocculate is promoted to be increased, the coagulation efficiency is improved, a flow breaking mechanism enhances the flocculation effect, and the device is suitable for high and low flow working conditions, and has a good application prospect. The agent dosage and the dredging frequency are reduced, and the water treatment efficiency is optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and more specifically, to a flocculation cyclone. Background Art

[0002] In the field of water treatment, the coagulation tank in the coagulation treatment section enables the coagulant (such as aluminum salts, iron salts, etc.) to flow and collide with the water and medicine in the coagulation section, causing the tiny particles in the water to aggregate into larger flocs, thereby improving the removal efficiency of suspended solids, improving water quality, promoting sedimentation, reducing the subsequent water treatment load, and enhancing the disinfection effect. Traditional coagulation treatment equipment, such as mechanical agitation coagulation tanks, grid coagulation tanks, grille coagulation tanks, perforated swirl coagulation tanks, etc., have many deficiencies. For example, they have high energy consumption, an unsatisfactory shear gradient, low mixing efficiency. When the water consumption is adjusted, the flow rate changes, resulting in an insufficient flow rate and not achieving the optimal flow rate for coagulation. There is also the problem that large flocs precipitate prematurely and are prone to precipitate at the bottom of the coagulation section, increasing the bottom sludge discharge work. In the coagulation equipment, due to improper selection of the coagulation equipment, the mixing effect of water and coagulant is often insufficient, resulting in an unsatisfactory coagulation effect and increasing the difficulty and cost of subsequent treatment. In some small water treatment equipment, in order to achieve the best coagulation effect in the coagulation section, each section must have a matching flow rate. When it comes to small water treatment equipment, the cross-sectional size of the coagulation tank body must be controlled very small, so that workers cannot enter the tank body for construction and production.

[0003] Therefore, in small water treatment plants, perforated swirl coagulation tanks are often used, which is a swirl coagulation device. Although this method is also swirl coagulation, there are problems such as the inlet direction not matching the internal flow field of the cyclone, resulting in a lot of ineffective collisions between the water flow and the inner wall, large kinetic energy loss, and the coagulation not achieving the best effect. Therefore, in view of the above technical problems, a new type of flocculation cyclone is proposed here. Summary of the Invention

[0004] The purpose of the present invention is to provide a flocculation cyclone. It adopts a multi-group cyclone barrel array. The cyclones are fed tangentially or with a regulation mechanism to adjust the flow rate of tangential water inlet, forming a high-shear-gradient swirl to promote the collision and growth of flocs and enhance the coagulation efficiency. A return mud cone is added at the bottom of the cyclone barrel, making good use of the place where the velocity gradient at the center of the cyclone barrel is zero to form sedimented flocs, which are transported to the high-shear-gradient area near the inner side of the cyclone barrel, forming a high enrichment of flocs near the barrel wall, increasing the adsorption of fine flocs, and improving the flocculation effect. A flow-breaking mechanism is set in the cyclone that finally enters the sedimentation tank to disrupt the swirl of the last-stage cyclone barrel entering the sedimentation tank, allowing the water flow entering the sedimentation tank to flow evenly from the center into the sedimentation tank, thereby achieving applicability to high- and low-flow conditions, reducing the dosage of chemicals and the frequency of silt cleaning, and optimizing the water treatment efficiency.

[0005] The present invention is realized through the following technical solutions:

[0006] A flocculation cyclone, comprising a plurality of groups of cyclone barrels arranged in an array, the outer parts of the cyclone barrels at the frontmost and rearmost ends are both provided with top openings, the outer parts of the cyclone barrels in the middle part are provided with bottom openings and top openings, and an overflow pipe tangential to the cyclone barrels is installed between adjacent two groups of the bottom openings and between adjacent two groups of the top openings. A flow rate adjustment device is installed in the overflow pipe, and a sludge return cone is fixedly connected to the inner bottom of the cyclone barrel.

[0007] Preferably, a guide plate is fixedly connected to the inner side wall of the cyclone barrel, a floc discharge mechanism is fixedly connected to the inner bottom of the cyclone barrel, a sedimentation tank is fixedly connected to the outside of the cyclone barrel at the rearmost end, and the sedimentation tank corresponds to the top opening provided on the outside of the cyclone barrel at the rearmost end. A flow breaking mechanism is installed inside the cyclone barrel at the rearmost end.

[0008] Preferably, a water inlet pipe is fixedly connected to the outside of the cyclone barrel at the frontmost end, and the water inlet pipe is communicated with the top opening.

[0009] Preferably, between adjacent two groups of the bottom openings and between adjacent two groups of the top openings are tangentially opened between the corresponding two groups of cyclone barrels, and an overflow pipe is fixedly connected between adjacent two groups of the bottom openings and between adjacent two groups of the top openings.

[0010] Preferably, an installation groove is opened on the outside of the overflow pipe, and two symmetrically arranged sealing plates are fixedly connected to the inside of the installation groove.

[0011] Preferably, the flow rate adjustment device includes a flow velocity adjustment pressing block, a lifting plate, a mounting frame, a driving motor, a coupling and a lead screw. The flow velocity adjustment pressing block is slidably connected between the two sealing plates. The lifting plate is fixedly connected to the upper side of the flow velocity adjustment pressing block, and the lifting plate is slidably connected to the upper side of the overflow pipe. The mounting frame is fixedly connected to the outside of the overflow pipe, and the lifting plate is limited and slidably connected to the inside of the mounting frame.

[0012] Preferably, the driving motor is fixedly connected to the outside of the mounting frame, the coupling is fixedly connected to one side of the driving motor, and the coupling is rotatably connected to the mounting frame. The lead screw is fixedly connected to the end of the coupling, and the lead screw is threadedly connected to the inside of the lifting plate.

[0013] Preferably, the guide plate is in a spiral plate structure.

[0014] Preferably, the floc discharge mechanism includes a sewage discharge valve, a sewage discharge pipe, and a material guide plate. The sewage discharge pipe is fixedly connected to the outside of the cyclone barrel, the sewage discharge valve is fixedly connected to the outside of the sewage discharge pipe, the material guide plate is fixedly connected to the outside of the sludge return cone, and the material guide plate is an inclined elliptical annular plate structure.

[0015] Preferably, the flow-breaking mechanism includes a rotating rod, a flow-breaking plate, a connecting rod, and a water splash wall. The rotating rod is rotatably connected to the inner bottom of the last cyclone barrel, and the number of rotating rods is three and they are arranged in a ring. The flow-breaking plate is fixedly connected to the outside of the rotating rod, the connecting rod is fixedly connected to the outside of the last cyclone barrel, the water splash wall is fixedly connected to the end of the connecting rod, and the water splash wall is located directly above the sedimentation tank. A connecting pipe is fixedly connected to the outside of the sedimentation tank.

[0016] The technical solution of the present invention has at least the following beneficial effects:

[0017] 1. In this flocculation cyclone device, through the tangential water inlet design of multiple cyclone barrels, the kinetic energy of the water body is maintained and a swirling flow that continuously rotates along the barrel wall is formed. Its high velocity gradient promotes the increase of the rotation and collision of flocs, forming dense large particles and having a significantly better adsorption effect on fine flocs than traditional grid / grille reaction tanks.

[0018] 2. In this flocculation cyclone device, through the sludge return cone at the bottom of the cyclone barrel, the flocs are guided to settle and slide down by using the central low-speed area, and are mixed with the subsequent water flow along the edge of the cyclone barrel, realizing the cyclic synergistic effect of old particles adsorbing new particles, preventing the accumulation of flocs, improving the collision and adsorption efficiency, and reducing the frequency of silt cleaning.

[0019] 3. In this flocculation cyclone device, through the spiral guide ring in the barrel, by strengthening the rotational shear force, extending the water flow path, and optimizing the mixing space, the collision probability of flocs and the contact efficiency of flocculants are enhanced, and its inclined structure synchronously reduces the water flow resistance and the risk of surface sedimentation.

[0020] 4. In this flocculation cyclone device, through the flow control device of the water pipe, by adjusting the flow area, the swirling flow velocity and kinetic energy under low-flow conditions are maintained, ensuring the process stability; using finished seamless steel pipes to make small-sized cyclone barrels significantly simplifies the construction difficulty and cost.

[0021] 5. In this flocculation cyclone device, through the flow-breaking plate in the water outlet section, the direction is adjusted by the rotating rod, breaking the inertial deflection of the swirling flow, making the water flow evenly enter the sedimentation tank, and avoiding the uneven water flow entering the sedimentation tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2 is the first partial structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the second partial structure of the present invention;

[0025] Figure 4 It is a side sectional view of the first partial structure of the present invention;

[0026] Figure 5 is Figure 4 an enlarged view of A in

[0027] Figure 6 It is an expanded view of the internal water flow path of the present invention;

[0028] Figure 7 It is a side sectional view of the second partial structure of the present invention;

[0029] Figure 8 is Figure 7 an enlarged view of B in

[0030] Figure 9 is Figure 1 an enlarged view of C in

[0031] Figure 10 It is a front view of the present invention;

[0032] Reference numerals: 1, swirl bucket; 2, water inlet pipe; 3, bottom opening; 4, top opening; 5, flow-through pipe; 6, installation groove; 7, sealing plate; 8, flow rate adjustment pressing block; 9, lifting plate; 10, mounting rack; 11, drive motor; 12, coupling; 13, lead screw; 14, mud return cone; 15, guide plate; 16, sewage discharge valve; 17, sewage discharge pipe; 18, material guide plate; 19, rotating rod; 20, flow-breaking plate; 21, sedimentation tank; 22, connecting rod; 23, water splash blocking wall; 24, connecting pipe. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment: <�

[0035] Please refer to Figures 1 - 8, A flocculation cyclone proposed by the present invention includes a plurality of groups of swirling barrels 1 arranged in an array. The number and arrangement positions of the swirling barrels 1 can be arbitrarily combined. The outer parts of the swirling barrels 1 at the frontmost and rearmost ends are both provided with top openings 4. The outer parts of the swirling barrels 1 in the middle part are provided with bottom openings 3 and top openings 4. And an overflow pipe 5 tangential to the adjacent two swirling barrels 1 and a flow rate adjustment device are installed between the adjacent two bottom openings 3 and between the adjacent two top openings 4; a mud return cone 14 is fixedly connected to the inner bottom of the swirling barrel 1, a guide plate 15 is fixedly connected to the inner wall of the swirling barrel 1, and a floc discharge mechanism is fixedly connected to the inner bottom of the swirling barrel 1.

[0036] A water inlet pipe 2 is fixedly connected to the outside of the swirling barrel 1 at the frontmost end, and the water inlet pipe 2 is communicated with the top opening 4.

[0037] Between the adjacent two bottom openings 3 and between the adjacent two top openings 4 are the overflow pipes 5 connecting the corresponding two swirling barrels 1 in a tangential manner to the circle.

[0038] A tangential water inlet flow rate adjustment device is installed inside the overflow pipe 5. The tangential water inlet flow rate adjustment device is provided with an upper sealing plate 7, a flow rate adjustment block 8, a lifting plate 9, a mounting frame 10, a driving motor 11, a coupling 12 and a lead screw 13. The flow rate adjustment block 8 is slidably connected to the installation groove 6. The lifting plate 9 is fixedly connected to the upper side of the flow rate adjustment block 8, and the lifting plate 9 is slidably connected to the upper side of the overflow pipe 5. The mounting frame 10 is fixedly connected to the outside of the overflow pipe 5, and the lifting plate 9 is limited and slidably connected to the inside of the mounting frame 10.

[0039] The driving motor 11 is fixedly connected to the outside of the mounting frame 10. The coupling 12 is fixedly connected to one side of the driving motor 11, and the coupling 12 is rotatably connected to the mounting frame 10. The lead screw 13 is fixedly connected to the end of the coupling 12, and the lead screw 13 is threadedly connected to the inside of the lifting plate 9.

[0040] The guide plate 15 is in a spiral plate structure. The guide plate 15 can also be arranged intermittently at a certain angle in a staggered manner for disturbing the swirl to make the flocs better adsorb and collide with each other.

[0041] The floc discharge mechanism includes a sewage discharge valve 16, a sewage discharge pipe 17 and a guide plate 18. The sewage discharge pipe 17 is fixedly connected to the outside of the swirling barrel 1. The sewage discharge valve 16 is fixedly connected to the outside of the sewage discharge pipe 17. The sewage discharge valve 16 and the sewage discharge pipe 17 are used for draining water and cleaning the sludge in the barrel body. The guide plate 18 is fixedly connected to the outside of the mud return cone 14, and the guide plate 18 is in an inclined elliptical annular plate structure.

[0042] Outside the outermost swirl bucket 1, a sedimentation tank 21 is fixedly connected, and the sedimentation tank 21 corresponds to the top opening 4 opened outside the outermost swirl bucket 1. A flow-breaking mechanism is installed inside the outermost swirl bucket 1.

[0043] When the swirling water body in the last-stage swirl bucket 1 enters the sedimentation tank 21, its rotating water flow is likely to cause the water to flow into the sedimentation tank 21 in a non-uniform vortex shape, resulting in uneven water distribution in the sedimentation tank 21. Therefore, in the last-stage swirl bucket 1, a plurality of flow-breaking mechanisms are evenly distributed inside the swirl bucket 1. The flow-breaking mechanism consists of a rotating rod 19 and a flow-breaking plate 20. Multiple groups of flow-breaking plates 20 can be arranged in the swirl bucket 1. By adjusting the rotating rod 19, the flow-breaking plate 20 acts on the rotating water flow at a certain angle, changing and breaking the original swirling direction, converting the rotating water flow into a uniform laminar flow, ensuring that the water flow passes through the connecting device into the sedimentation tank 21 in a uniform laminar flow state, and then further equalizing the water flow entering the sedimentation tank 21 through the water-blocking wall 23.

[0044] Furthermore, in addition to being circular, the coagulation device connecting to the sedimentation tank 21 in the last stage can also be square, which is used to make the state of the swirling flow entering the sedimentation tank 21 uniform and the water flow entering the sedimentation tank 21 even.

[0045] The working principle of a flocculation cyclone based on the embodiment is that efficient coagulation treatment is achieved through the array layout and synergistic effect of multiple groups of cyclone barrels 1. The cyclone barrels 1 adopt a tangential water inlet design, enabling the water flow to enter adjacent barrels in a tangential manner, fully maintaining the original kinetic energy of the water body, and forming a continuous swirling flow that spirally rises or descends along the barrel wall. Compared with traditional grid or grille coagulation processes, the water flow inside the cyclone barrel 1 continuously rotates in the height direction, and the value of the velocity gradient G is significantly increased, providing ideal conditions for the dynamic collision and adsorption of flocs. During this process, the high shear force of the water flow causes the floc particles to continuously rotate, collide, and gradually increase in size. The unique centrifugal effect of the swirling water flow makes the flocs present a spiral trajectory during the adsorption process, further strengthening the dense combination between particles. The finally formed flocs are not only larger in volume and denser in structure, but also have significantly enhanced capture ability for fine particles, thereby improving the sedimentation efficiency. The mud return cone 14 provided at the bottom of the cyclone barrel 1 makes clever use of the swirling dynamics characteristics. The flow velocity in the central area of the barrel body approaches zero, and the flocs naturally settle to the inclined surface of the mud return cone 14 due to gravity, and then slide down the inclined surface to the inner side of the barrel. During the sliding process, these flocs are driven by the swirl to remix with the newly incoming raw water, which not only avoids the accumulation of sludge at the bottom of the barrel, but also promotes the secondary adsorption and interception of the already settled mature flocs and the newly entering fine particles, forming a cyclic synergistic mechanism of "old core adsorbing new substances", significantly reducing the chemical consumption and silt cleaning frequency. At the same time, the spiral guide plate 15 installed on the inner side of the barrel wall further optimizes the swirling environment. Its spiral structure guides the water flow to form a stronger swirling motion, increasing the shear force while extending the water flow path and increasing the contact frequency and collision probability of floc particles. The gap between the guide plate 15 and the barrel wall generates a local high velocity gradient area, strengthening the shear effect and promoting the efficient mixing of the flocculant and pollutants. In addition, the tangential water inlet flow rate regulating mechanism equipped on the water passing pipeline between adjacent cyclone barrels 1 can adjust the flow area in real time according to the treatment water volume. When the flow rate decreases, such as during the low peak period at night, by operating the drive motor 11, the coupling 12 drives the lead screw 13 to rotate. Through the threaded connection between the lead screw 13 and the lifting plate 9, and the limit sliding between the lifting plate 9 and the mounting frame 10, the flow rate adjustment pressing block 8 can slide up and down under the limiting action of the sealing plate 7 to narrow the flow cross-section and increase the flow velocity, ensuring that the swirling velocity always meets the process requirements and maintaining sufficient rotational kinetic energy. This design is especially suitable for small integrated water treatment systems. It uses finished seamless steel pipes to process the cyclone barrel 1 body, solves the problem of difficult construction of small-sized pool bodies, and significantly reduces the manufacturing cost and process complexity.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flocculation cyclone, characterized in that: It includes multiple groups of swirl buckets (1) arranged in an array. The outside of the swirl bucket (1) is provided with a top opening (4) and a bottom opening (3). An overflow pipe (5) tangential to the swirl bucket (1) is installed between adjacent two groups of the bottom openings (3) and between adjacent two groups of the top openings (4). A flow rate adjustment device is installed in the overflow pipe (5). A mud return cone (14) is fixedly connected to the inner bottom of the swirl bucket (1).

2. The flocculation cyclone according to claim 1, wherein: A guide plate (15) is fixedly connected to the inner side wall of the swirl bucket (1). A floc discharge mechanism is fixedly connected to the inner bottom of the swirl bucket (1). A sedimentation tank (21) is fixedly connected to the outside of the swirl bucket (1) at the rearmost end. The sedimentation tank (21) corresponds to the top opening (4) opened on the outside of the swirl bucket (1) at the rearmost end. A flow breaking mechanism is installed inside the swirl bucket (1) at the rearmost end.

3. A flocculation cyclone according to claim 1, characterized in that: A water inlet pipe (2) is fixedly connected to the outside of the swirl bucket (1) at the foremost end. The water inlet pipe (2) is communicated with the top opening (4).

4. A flocculation cyclone according to claim 1, characterized in that: Between adjacent two groups of the bottom openings (3) and between adjacent two groups of the top openings (4) are tangentially opened between the corresponding two groups of the swirl buckets (1). An overflow pipe (5) is fixedly connected between adjacent two groups of the bottom openings (3) and between adjacent two groups of the top openings (4).

5. The flocculation cyclone according to claim 3, characterized in that: An installation groove (6) is opened on the outside of the overflow pipe (5). Two symmetrically arranged sealing plates (7) are fixedly connected to the inside of the installation groove (6).

6. The flocculation cyclone according to claim 4, wherein: The flow rate adjustment device includes a flow velocity adjustment block (8), a lifting plate (9), a mounting frame (10), a driving motor (11), a coupling (12) and a lead screw (13). The flow velocity adjustment block (8) is slidably connected between the two sealing plates (7). The lifting plate (9) is fixedly connected to the upper side of the flow velocity adjustment block (8). The lifting plate (9) is slidably connected to the upper side of the overflow pipe (5). The mounting frame (10) is fixedly connected to the outside of the overflow pipe (5). The lifting plate (9) is limited and slidably connected to the inside of the mounting frame (10).

7. A flocculation cyclone according to claim 5, characterized in that: The driving motor (11) is fixedly connected to the outside of the mounting frame (10). The coupling (12) is fixedly connected to one side of the driving motor (11). The coupling (12) is rotatably connected to the mounting frame (10). The lead screw (13) is fixedly connected to the end of the coupling (12). The lead screw (13) is threadedly connected to the inside of the lifting plate (9).

8. A flocculation cyclone according to claim 1, characterized in that: The guide plate (15) is in a spiral plate structure.

9. A flocculation cyclone according to claim 1, characterized in that: The floc discharge mechanism includes a sewage discharge valve (16), a sewage discharge pipe (17) and a material guide plate (18). The sewage discharge pipe (17) is fixedly connected to the outside of the swirl bucket (1). The sewage discharge valve (16) is fixedly connected to the outside of the sewage discharge pipe (17). The material guide plate (18) is fixedly connected to the outside of the mud return cone (14). The material guide plate (18) is in an inclined installation elliptical annular plate structure.

10. A flocculation cyclone according to claim 1, characterized in that: The flow-breaking mechanism includes a rotating rod (19), a flow-breaking plate (20), a connecting rod (22), and a water-blocking wall (23). The rotating rod (19) is rotatably connected to the inner bottom of the outermost swirl bucket (1), and the number of rotating rods (19) is three and arranged in a ring. The flow-breaking plate (20) is fixedly connected to the outside of the rotating rod (19). The connecting rod (22) is fixedly connected to the outside of the outermost swirl bucket (1). The water-blocking wall (23) is fixedly connected to the end of the connecting rod (22), and the water-blocking wall (23) is located directly above the sedimentation tank (21). A connecting pipe (24) is fixedly connected to the outside of the sedimentation tank (21).

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