A loop flocculation enhanced water treatment apparatus

Abstract

The utility model relates to sewage treatment technical field, concretely is a kind of circular flow type flocculation enhanced water treatment equipment, including cylinder, shell and conveying component;Shell is arranged at the bottom end of cylinder, the inside of shell is equipped with the conveying cylinder for conveying sewage and medicament mixed solution to cylinder in use state;Conveying component is arranged at the outside of shell, conveying component has two water outlets, and the two water outlets of conveying component are equipped with the flow guide shell for conveying sewage and medicament mixed solution to the inside of conveying cylinder symmetrically in use state.The utility model preliminary mixes the liquid flow of conveying component, and it is accurately conveyed to the inside of two flow guide shells by two water outlets, and the flow guide shell is conveyed to its inside synchronously by two liquid flows on the two sides of conveying cylinder, so that it generates impact and forms vortex ascending flow state, to carry out multistage mixing work, improve mixing uniformity, avoid to appear flow dead zone, and do not need mechanical stirring device, with the remarkable advantage of energy saving, maintenance-free.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a circulating flocculation-enhanced water treatment device. Background Technology

[0002] Flocculation sedimentation technology is a common water treatment technology, mainly used to treat suspended particulate matter and colloidal substances in water. Its basic principle is to use chemical agents or physical methods to cause suspended particulate matter and colloidal substances in the water to aggregate into larger clumps, which then settle to the bottom or float to the surface, thus removing impurities from the water.

[0003] Chinese patent document CN220502773U discloses an integrated circumferential flow high-efficiency flocculation and clarification device, comprising an upper cylinder and a lower cylinder. The upper cylinder is a circumferential flow sedimentation zone, the lower cylinder is a coagulation zone, and the flocculation zone is located between the sedimentation zone and the coagulation zone. An inlet pipe and a dosing pipe a are installed on the bottom side wall of the lower cylinder. A mixer is installed at the center of the flocculation zone, and a stirring motor is installed at the upper end of the mixer. A guide tube is installed outside the mixer, with the center of the guide tube aligned with the mixer. The upper side wall of the guide tube is provided with a water outlet. The bottom of the circumferential flow sedimentation zone is provided with a mud-sliding inclined plate. The circumferential flow sedimentation zone is composed of two intersecting spiral guide plates. The outermost ring of the circumferential flow sedimentation zone is provided with an inclined tube settler and a water outlet weir from bottom to top. A mud accumulation trough is provided at the mud-sliding inclined plate at the bottom of the circumferential flow sedimentation zone. The upper part of the shaft of the mixer is a hollow structure with a dosing pipe b inside. The dosing pipe b is connected to an external dosing pump through a rotating connector. Four dosing holes are provided around the middle of the shaft.

[0004] In the above scheme, the water is introduced from the bottom side of the upper cylinder. However, the range of action of the agitator is limited. In actual operation, the lower cylinder needs to be continuously injected with the mixed liquid, and the mixed liquid is transported to the inner side of the upper cylinder by the liquid level rising. During the process of the liquid level rising, the water flow is insufficient in the lower cylinder and in the far end area symmetrical to the water inlet pipe, which easily forms a dead flow zone. This causes some of the flocs that have been formed to settle and accumulate here, and cannot be effectively transported to the upper sedimentation zone. This not only reduces the volume utilization rate, but also poses a risk of caking. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a circulating flocculation-enhanced water treatment device.

[0006] The technical solution of this utility model is: a circulating flocculation enhanced water treatment equipment, including a cylinder, a shell, and a conveying assembly; The shell is located at the bottom end of the cylinder, and the inner side of the shell is provided with a conveying cylinder for conveying the mixture of sewage and chemicals into the cylinder during use; The conveying assembly is located on the outside of the housing and has two drain ports. The two drain ports of the conveying assembly are equipped with guide shells for symmetrically conveying the sewage and chemical mixture into the inside of the conveying cylinder during use.

[0007] Preferably, the bottom end of the cylinder is concave upwards and conical, the top end of the conveying cylinder is connected to the bottom end of the cylinder, the inner diameter of the conveying cylinder gradually increases from the middle of the conveying cylinder toward the cylinder along the height direction of the shell, the conveying cylinder and the cylinder form a flocculation cavity, and a second dosing pipe extending into the cavity is provided in the middle of the cylinder.

[0008] Preferably, the flow guide shell includes a cover plate, a spiral plate, and a bottom plate; The base plate is located at the bottom end of the conveyor cylinder; There are two spiral plates, which are staggered around the outside of the conveyor cylinder and connected to one side of the conveyor cylinder respectively; The cover plate is located on top of the spoiler.

[0009] Preferably, the ends of the two spiral plates are arranged tangentially to the conveying cylinder and are arranged symmetrically.

[0010] Preferably, the two spiral plates, the bottom plate, and the cover plate form two spiral flow channels, and openings are provided on both sides of the bottom end of the conveying cylinder. The two spiral flow channels are respectively connected to the conveying cylinder through the openings.

[0011] Preferably, multiple baffles are provided on the inner side of the spiral flow channel.

[0012] Preferably, the delivery assembly includes a regulating valve, a Y-shaped tube, and a first dosing tube; The Y-shaped tube is located on the outside of the housing and connected to the spiral plate; The first dosing tube is connected to the Y-shaped tube for connecting to an external drug delivery device to deliver drugs into the Y-shaped tube; There are two regulating valves, which are respectively located at the ends of the Y-shaped tube.

[0013] Preferably, a collection shell is provided on the inner side of the housing and on the outer side of the conveying cylinder, and a discharge pipe extending outward from the bottom end of the collection shell is provided.

[0014] Preferably, the cross-sectional projection shape of the collection shell is V-shaped.

[0015] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: This invention uses a conveying component to precisely deliver the initially mixed liquid flow to the inner side of two guide shells through two drain outlets. The guide shells simultaneously convey the two liquid flows to their inner sides on both sides of the conveying cylinder, causing them to impact and form a vortex-like upward flow state for multi-stage mixing. This improves the mixing uniformity, avoids dead zones in the flow, and eliminates the need for mechanical stirring devices, thus offering significant advantages such as energy saving and maintenance-free operation. Attached Figure Description

[0016] Figure 1 This is a perspective view of one embodiment of the present invention; Figure 2 This is a schematic diagram of the conveying component structure in one embodiment of the present invention; Figure 3 This is an exploded schematic diagram of the flow guide shell structure in one embodiment of the present invention; Figure 4 This is a cross-sectional schematic diagram of the conveying cylinder structure in one embodiment of the present invention; Reference numerals: 1. Cylinder; 2. Shell; 3. Conveying cylinder; 4. Cover plate; 5. Spiral plate; 6. Joint; 7. Regulating valve; 8. Y-shaped pipe; 9. First dosing pipe; 10. Collection shell; 11. Discharge pipe; 12. Bottom plate; 13. Opening; 14. Spiral flow channel; 15. Baffle plate; 16. Second dosing pipe. Detailed Implementation

[0017] Example 1; as Figure 1-4 As shown, the present invention proposes a circulating flocculation enhanced water treatment device, which includes a cylinder 1, a shell 2, and a conveying assembly. The shell 2 is located at the bottom of the cylinder 1. The inner side of the shell 2 is provided with a conveying cylinder 3 for conveying the mixture of sewage and chemicals into the cylinder 1 during use. The inner side of the cylinder 1 is a circumferential flow sedimentation zone. In the prior art, only the shell and the guide cylinder structure are shown in the figure. The conveying assembly is located on the outside of the housing 2. The conveying assembly has two drain ports. The two drain ports of the conveying assembly are equipped with guide shells for symmetrically conveying the sewage and chemical mixture into the inside of the conveying cylinder 3 during use.

[0018] In an optional embodiment, the bottom end of the cylinder 1 is concave upwards and conical. The top end of the conveying cylinder 3 is connected to the bottom end of the cylinder 1. The inner diameter of the conveying cylinder 3 gradually increases from the middle of the conveying cylinder 3 toward the cylinder 1 along the height direction of the shell 2. The conveying cylinder 3 and the cylinder 1 enclose a flocculation cavity, which is used to enter the flocculation cavity when the sewage and chemical mixture is conveyed upwards. A second dosing pipe 16 extending into the cavity is provided in the middle of the cylinder 1. Since the cross-sectional size of the slow-flow cavity is significantly larger than the bottom cross-section of the conveying cylinder 3, the flow velocity of the liquid flowing out of the conveying cylinder 3 at high speed drops sharply here and forms a vortex upward flow. At this time, the second dosing pipe 16, which is provided in the middle of the cylinder 1 and extends into the slow-flow cavity, is connected to another external chemical pump to add PAM (polyacrylamide) to the cavity. Under the ideal hydraulic conditions of slow flow and vortex, PAM reacts fully with the sewage that has been mixed with PAC to form large-particle-size and high-density flocs, creating excellent conditions for subsequent sedimentation.

[0019] In this embodiment, the sewage transfer pump and the external chemical pump work together to transport the sewage and the chemical agent to the inside of the main pipe of the transfer assembly, where they are initially mixed. The liquid flow after initial mixing is branched into two streams by the transfer assembly, so that the two drain outlets of the transfer assembly accurately deliver the two branch flow rates to the inside of the two guide shells. The guide shells on both sides of the transfer cylinder 3 simultaneously transport the two liquid flows to the inside of the transfer cylinder 3, causing an impact and forming an upward vortex state inside the transfer cylinder 3. At the same time, the liquid flows move upward to the flocculation cavity formed by the connection between the transfer cylinder 3 and the cylinder body 1, and are connected to the external chemical pump through the second dosing pipe 16 to add the chemical agent into the cavity, so that the liquid flow inside the cavity mixes with it and forms large-particle-size, high-density flocs, which are then transported to the inside of the cylinder body 1 for sedimentation and drainage. The entire mixing and flocculation process fully utilizes fluid kinetic energy and does not require a mechanical stirring device, which has significant advantages of energy saving and maintenance-free operation. At the same time, it avoids the large coagulation zone caused by the large inner size of the cylinder, which would cause the coagulants in the sewage to deposit at the inner edge of the cylinder.

[0020] Example 2; as Figure 3 As shown, the circulating flocculation enhanced water treatment equipment proposed in this utility model differs from that in Embodiment 1 in that the flow guide shell includes a cover plate 4, a spiral plate 5, and a bottom plate 12. The base plate 12 is located at the bottom end of the conveying cylinder 3; There are two spiral plates 5, which are staggered around the outside of the conveying cylinder 3 and connected to one side of the conveying cylinder 3 respectively; The cover plate 4 is located at the top of the spoiler 15, wherein the cover plate 4 and the bottom plate 12 are arranged to match the shape of the spiral plate 5 and the conveying cylinder 3.

[0021] In an optional embodiment, the ends of the two spiral plates 5 are arranged tangentially to the conveying cylinder 3 and are symmetrically arranged. The two spiral plates 5, together with the bottom plate 12 and the cover plate 4, form two spiral flow channels 14. Openings 13 are provided on both sides of the bottom end of the conveying cylinder 3. The two spiral flow channels 14 are connected to the conveying cylinder 3 through the openings 13, so that the liquid flow from the spiral flow channels 14 on both sides enters the interior of the conveying cylinder 3 in a tangential direction. At the same time, the two liquid flows generate a strong opposing impact near the central axis of the conveying cylinder 3. This impact forms a highly efficient secondary mixing unit, which greatly improves the mixing uniformity of sewage and chemicals.

[0022] In an optional embodiment, a plurality of baffles 15 are provided on the inner side of the spiral channel 14. When the mixture of sewage and chemical agent flows spirally along the wall of the spiral channel 14, the baffles 15 generate a continuous disturbance effect on it, thereby further enhancing the mixing effect of sewage and chemical agent on the basis of spiral flow.

[0023] In this embodiment, by placing the bottom plate 12 at the bottom end of the conveying cylinder 3 and installing the spiral plate 5 above the bottom plate 12, while fixing the cover plate 4 on the spiral plate 5 and the conveying cylinder 3, two spiral flow channels 14 connected to the conveying cylinder 3 are formed between the spiral plate 5, the bottom plate 12, and the cover plate 4. The inlet end of the spiral flow channel 14 is connected to the Y-shaped pipe 8, so that the Y-shaped pipe 8 synchronously conveys the sewage and chemical mixture to the inside of the two spiral flow channels 14, thereby causing the spiral flow channel 14 to spirally guide the flow and enter the inside of the conveying cylinder 3 tangentially. This causes the two mixtures to impact and move, further improving the mixing effect of the sewage and the chemical mixture and enhancing its mixing uniformity. At the same time, because the mixtures enter the inside of the conveying cylinder 3 tangentially, the two mixtures move in a vortex state inside the conveying cylinder 3 to the cavity formed by the connection between the conveying cylinder 3 and the cylinder body 1.

[0024] Example 3; as Figure 1-2 As shown, the circulating flocculation enhanced water treatment equipment proposed in this utility model differs from that in Embodiment 1 in that the conveying component includes a regulating valve 7, a Y-shaped pipe 8, and a first dosing pipe 9. Y-shaped tube 8 is provided on the outside of housing 2. A connector 6 is provided at the end of Y-shaped tube 8. Y-shaped tube 8 is connected to spiral plate 5 and communicates with spiral flow channel 14 through connector 6. The first dosing tube 9 is connected to the Y-shaped tube 8 for connecting with an external drug delivery device to deliver drugs into the Y-shaped tube 8; There are two regulating valves 7, which are respectively located at the ends of the Y-shaped tube 8.

[0025] In this embodiment, an external sewage transfer pump is connected to the Y-shaped pipe 8, and an external chemical pump is connected to the first chemical dosing pipe 9, so that the sewage transfer pump and the chemical pump work together to transport sewage and chemicals to the inside of the main pipe of the Y-shaped pipe 8 for preliminary mixing. The liquid flow after preliminary mixing splits into two streams through the Y-shaped pipe 8. With the cooperation of the regulating valve 7, the flow of the two branches can be precisely balanced, so that the two liquid flows enter the inside of the two symmetrically arranged spiral channels 14 respectively.

[0026] Example 4; as Figure 2 As shown, the present invention proposes a circulating flocculation enhanced water treatment device. Compared with the first embodiment, the difference in this embodiment is that a collection shell 10 is provided on the inner side of the shell 2 and on the outer side of the conveying cylinder 3. The bottom end of the collection shell 10 is provided with a discharge pipe 11 extending outward from the shell 2. The cross-sectional projection shape of the collection shell 10 is V-shaped. It is used to collect the sludge inside the sludge accumulation tank through the collection shell 10 during use and discharge it through the discharge pipe 11, so as to avoid the blockage of multiple sludge accumulation tanks connected by the sludge discharge pipe.

[0027] In this invention, an external sewage transfer pump is connected to the Y-shaped pipe 8, and an external chemical pump is connected to the first dosing pipe 9. The sewage transfer pump and the chemical pump work together to transport sewage and PAC (polyaluminum chloride) to the inner side of the main pipe of the Y-shaped pipe 8 for preliminary mixing. The pre-mixed liquid flow branches into two streams through the Y-shaped pipe 8. With the cooperation of the regulating valve 7, the flow rates of the two branches can be precisely balanced. The two liquid streams enter the inner side of two symmetrically arranged spiral flow channels 14, and the liquid flows spirally along the wall of the spiral flow channels 14. During this process, the baffles 15 fixedly installed inside... The continuous disturbance to the liquid flow further enhances the mixing effect of wastewater and chemicals based on the spiral flow. The outlet of the spiral channel 14 is connected to the central conveying cylinder 3 through the opening 13. Crucially, the orientation of the opening 13 is tangential to the wall of the conveying cylinder 3. The outlets of the two spiral channels 14 are centrally symmetrically arranged on both sides of the conveying cylinder 3, so that the liquid flow from the spiral channels 14 on both sides enters the interior of the conveying cylinder 3 tangentially. At the same time, the two liquid flows generate a strong opposing impact near the central axis of the conveying cylinder 3. This impact forms a highly efficient secondary mixing. The combined unit greatly improves the mixing uniformity of wastewater and chemicals. Through continuous transport of the mixture, it vortexes upward inside the transport cylinder 3. Simultaneously, the bottom of the transport cylinder 3 and the bottom of the cylinder body 1 enclose a slow-flow cavity with an enlarged cross-sectional size. Since the cross-sectional size of the slow-flow cavity is significantly larger than that of the bottom of the transport cylinder 3, the flow velocity of the liquid flowing out of the transport cylinder 3 at high speed drops sharply here, forming a vortex upward flow. At this time, PAM chemical is added into the cavity through a second dosing pipe 16 located in the middle of the cylinder body 1 and extending into this slow-flow cavity, which is connected to another external chemical pump. Acrylamide, under ideal hydraulic conditions of slow flow and vortex, PAM reacts fully with the already mixed PAC wastewater to form large-particle-size, high-density flocs, creating excellent conditions for subsequent sedimentation. The flocculated liquid vortex rises and enters the known circumferential flow sedimentation zone at the top of the cylinder 1 for sedimentation. The entire mixing and flocculation process fully utilizes fluid kinetic energy and does not require mechanical stirring devices, which has significant advantages of energy saving and maintenance-free operation. In the prior art, the sludge collection tank can discharge into the collection shell 10 and out through the discharge pipe 11, avoiding the blockage caused by multiple sludge collection tanks being connected by the discharge pipe.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A loop flocculation enhanced water treatment apparatus, characterized by, It includes a cylinder (1), a shell (2), and a conveying assembly; The shell (2) is located at the bottom end of the cylinder (1), and the inner side of the shell (2) is provided with a conveying cylinder (3) for conveying sewage and chemical mixture into the cylinder (1) in the use state. The conveying assembly is located on the outside of the housing (2). The conveying assembly has two drain ports. The two drain ports of the conveying assembly are provided with guide shells for symmetrically conveying the sewage and chemical mixture to the inside of the conveying cylinder (3) in the use state.

2. The enhanced flocculation water treatment device of claim 1, wherein, The bottom end of the cylinder (1) is concave and conical. The top end of the conveying cylinder (3) is connected to the bottom end of the cylinder (1). The inner diameter of the conveying cylinder (3) gradually increases from the middle of the conveying cylinder (3) toward the cylinder (1) along the height direction of the shell (2). The conveying cylinder (3) and the cylinder (1) enclose a flocculation cavity. A second dosing pipe (16) extending into the cavity is provided in the middle of the cylinder (1).

3. The enhanced flocculation water treatment device of claim 1, wherein, The flow guide shell includes a cover plate (4), a spiral plate (5), and a bottom plate (12); The bottom plate (12) is set at the bottom end of the conveying cylinder (3); There are two spiral plates (5), which are staggered around the outside of the conveying cylinder (3) and connected to one side of the conveying cylinder (3) respectively; The cover plate (4) is located on top of the spoiler (15).

4. A flow-through flocculation enhanced water treatment apparatus according to claim 3, wherein The ends of the two spiral plates (5) are arranged tangentially to the conveying cylinder (3) and are arranged symmetrically.

5. A flow-through flocculation enhanced water treatment apparatus according to claim 4, wherein, Two spiral plates (5) together with the bottom plate (12) and the cover plate (4) form two spiral flow channels (14). Openings (13) are provided on both sides of the bottom end of the conveying cylinder (3). The two spiral flow channels (14) are connected to the conveying cylinder (3) through the openings (13).

6. A flow-through flocculation enhanced water treatment apparatus according to claim 5, wherein, Multiple baffles (15) are provided on the inner side of the spiral flow channel (14).

7. The enhanced flocculation water treatment device of claim 1, wherein, The delivery assembly includes a regulating valve (7), a Y-shaped tube (8), and a first dosing tube (9); The Y-shaped tube (8) is set on the outside of the housing (2) and connected to the spiral plate (5); The first dosing tube (9) is connected to the Y-shaped tube (8) for connecting with an external drug delivery device to deliver drugs into the Y-shaped tube (8); There are two regulating valves (7), and the two regulating valves (7) are respectively located at the ends of the Y-shaped tube (8).

8. The enhanced flocculation water treatment device of claim 1, wherein, A collection shell (10) is provided on the inner side of the housing (2) and on the outer side of the conveying cylinder (3). The bottom end of the collection shell (10) is provided with a discharge pipe (11) extending outward from the housing (2).

9. A recirculating ballasted flocculation enhanced water treatment apparatus according to claim 8, wherein, The cross-sectional projection shape of the collecting shell (10) is V-shaped.

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