Sewage treatment agent adding device based on flow control

Abstract

The utility model relates to a sewage treatment agent adding device based on flow control, and belongs to the technical field of agent adding devices.The sewage treatment agent adding device comprises an adding tank, a mixing cavity and an agent storage barrel are arranged in the adding tank, and a stirring device is installed at the top of the adding tank and comprises a servo motor; an output shaft of the servo motor movably extends into the mixing cavity and is fixedly connected with a plurality of stirring blades, breeding sewage is conveyed into the mixing cavity of the adding tank through the pumping pipeline system, the water suction flow and bypass flow of the metering pump are electrically controlled and regulated through a PLC, the rotating speed of an impeller in a volute can be controlled based on the flow, and the stirring blades are arranged in the mixing cavity. The speed of adding a coagulation agent into the sewage in the mixing cavity is automatically regulated and controlled, a servo motor is used for driving a plurality of stirring blades to rotate, so that the sewage is fully coagulated, the coagulated sewage can flow to a filtering device through a drainage pipe, coagulation filtering treatment is realized, the design is reasonable, and the automation degree is high.

Description

A wastewater treatment reagent dosing device based on flow control Technical Field

[0001] This disclosure belongs to the technical field of chemical dosing devices, specifically relating to a wastewater treatment chemical dosing device based on flow control. Background Technology

[0002] The statements herein provide only background information in relation to this disclosure and do not necessarily constitute prior art.

[0003] Aquaculture farms generate a large amount of wastewater during production. By adding coagulants to the wastewater, the mutual repulsion between colloidal particles in the water can be eliminated or reduced, making it easier for the colloidal particles to collide and aggregate, forming larger particles or flocs. The coagulants can then be filtered through sedimentation or coagulation filtration devices, thereby reducing the load on subsequent treatment processes and improving the wastewater treatment effect.

[0004] Most existing wastewater treatment dosing devices involve feeding chemicals into a storage cylinder via a transfer plate. A motor then rotates the cylinder, ejecting the chemicals and using a stirring plate to agitate the surrounding wastewater. This rapid diffusion and thorough mixing of the chemicals with the wastewater improves treatment efficiency. However, these devices lack automated electric control for dosage. Fluctuations in wastewater coagulation efficiency and flow rate further hinder efficient and precise dosing, resulting in low levels of automation and intelligence. Summary of the Invention

[0005] The purpose of this disclosure is to provide a wastewater treatment agent dosing device based on flow control, which can at least solve one of the above-mentioned technical problems.

[0006] To achieve the above objectives, one or more embodiments of this disclosure provide a wastewater treatment agent dosing device based on flow control, including a dosing tank. The dosing tank has a mixing chamber and a agent storage tank inside. A stirring device is provided on the top of the dosing tank. The stirring device includes a servo motor. The output shaft of the servo motor extends movably into the mixing chamber and is fixedly connected to multiple stirring blades. A conduit is fixedly connected to the bottom of the agent storage tank. Multiple perforations are opened along the circumference of the upper end of the conduit.

[0007] Furthermore, the bottom of the dosing tank is provided with a base, and a concave seat is fixed on the base. A flow control mechanism is installed on the concave seat. The flow control mechanism includes a metering pump, a suction pipe and a drain pipe. The suction pipe is horizontally connected to the metering pump, and the drain pipe is vertically connected to the metering pump. The metering pump is fixed to the concave seat by bolts and threads.

[0008] Furthermore, the water suction pipe is fixedly connected to the bottom of the dosing tank, and two bypass pipes are fixedly connected to the drain pipe.

[0009] Furthermore, the drug storage tank is equipped with a flow dosing mechanism, which includes a volute, an impeller, a rotating rod, and a dosing pipe. The volute is fixedly connected to two bypass pipes, the impeller is disposed inside the volute, the impeller is fixedly connected to the rotating rod, and the rotating rod is rotatably connected to the volute and the drug storage tank.

[0010] Furthermore, a dosing tube is fixedly connected to the bottom end of the rotating rod. The dosing tube has multiple liquid inlet holes along its circumference and is sealed inside the conduit.

[0011] Furthermore, the dosing tank is provided with a sewage inlet at the upper end of the mixing chamber, and the sewage inlet is connected to a sewage pump via a pipe.

[0012] Furthermore, a feeding port is provided at the top cover of the medicine storage tank, and a sealing ring is provided at the connection between the conduit and the rotating rod.

[0013] Furthermore, the base is fixedly connected to two L-shaped frames, and the L-shaped frames are fixedly connected to limit rings.

[0014] Furthermore, the outside of the dosing tank is provided with an annular limiting groove for embedding and installing a limiting ring.

[0015] Furthermore, a first solenoid valve is provided on the water suction pipe, and a second solenoid valve is provided on one of the bypass pipes.

[0016] The beneficial effects of one or more of the above technical solutions are as follows:

[0017] This invention utilizes a pumping pipeline system to transport aquaculture wastewater into the mixing chamber of a dosing tank. The suction flow and bypass flow of the metering pump are controlled by a PLC, which can control the speed of the impeller inside the volute based on the flow rate and automatically regulate the speed at which coagulant is added to the wastewater in the mixing chamber. Furthermore, multiple stirring blades are driven by a servo motor to ensure thorough coagulation of the wastewater. The coagulated wastewater then flows through a drain pipe to a filtration device for coagulation and filtration treatment. The design is reasonable, highly automated, and easy to promote and apply to wastewater treatment in aquaculture farms. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0019] Figure 1 is a schematic diagram of the overall structure of the drug dosing device in one or more embodiments of this disclosure;

[0020] Figure 2 is a schematic diagram of the internal structure of the drug dosing device in one or more embodiments of this disclosure;

[0021] Figure 3 is a schematic diagram of the base and stirring device of the drug dosing device in one or more embodiments of this disclosure;

[0022] Figure 4 is a schematic diagram of the flow control mechanism and flow dosing mechanism of the drug dosing device in one or more embodiments of this disclosure;

[0023] Figure 5 is an enlarged structural schematic diagram of the drug dosing device in Figure 4 at point A in one or more embodiments of this disclosure.

[0024] In the diagram, 1. Dosing tank; 11. Mixing chamber; 111. Wastewater inlet; 12. Chemical storage tank; 121. Feeding port; 122. Conduit; 1221. Perforation; 2. Base; 21. L-shaped frame; 22. Limiting ring; 23. Concave seat; 3. Stirring device; 31. Servo motor; 32. Stirring blade; 4. Flow control mechanism; 41. Metering pump; 42. Suction pipe; 421. First solenoid valve; 43. Drain pipe; 44. Bypass pipe; 441. Second solenoid valve; 5. Flow dosing mechanism; 51. Volute; 52. Impeller; 53. Rotating rod; 54. Dosing pipe; 541. Liquid inlet. Detailed Implementation

[0025] As shown in Figures 1-5, this embodiment provides a wastewater treatment agent dosing device based on flow control, including a dosing tank 1. The dosing tank 1 is provided with a mixing chamber 11 and an agent storage tank 12. A stirring device 3 is provided on the top of the dosing tank 1.

[0026] Specifically, as shown in Figure 2, the stirring device 3 includes a servo motor 31, the output shaft of which extends movably into the interior of the mixing chamber 11 and is fixedly connected to multiple stirring blades 32.

[0027] As shown in Figure 2, a base 2 is provided at the bottom of the dosing tank 1. A concave seat 23 is fixed on the base 2. A flow control mechanism 4 is installed on the concave seat 23. The flow control mechanism 4 includes a metering pump 41, a suction pipe 42 and a drain pipe 43. The metering pump 41 is fixed to the concave seat 23 by bolts and threads. The suction pipe 42 is horizontally connected to the metering pump 41, and the drain pipe 43 is vertically connected to the metering pump 41.

[0028] As shown in Figure 3, the suction pipe 42 is fixedly connected to the bottom of the dosing tank 1, and two bypass pipes 44 are fixedly connected to the drain pipe 43. The agent storage tank 12 is equipped with a flow dosing mechanism 5, which includes a volute 51, an impeller 52, a rotating rod 53, and a dosing pipe 54.

[0029] Specifically, the volute 51 is fixedly connected to two bypass pipes 44. The two bypass pipes 44 are connected to the volute 51 to ensure that a certain gap is maintained between the upper surface of the volute 51 and the dosing pipe 54. The impeller 52 rotates inside the volute 51. The impeller 52 is fixedly connected to the rotating rod 53. The rotating rod 53 is rotatably connected to the volute 51 and the reagent storage tank 12.

[0030] As shown in Figures 4 and 5, a conduit 122 is fixedly connected to the bottom of the medicine storage tank 12. Multiple perforations 1221 are opened along the circumference of the upper end of the conduit 122. A dosing pipe 54 is fixedly connected to the bottom of the rotating rod 53. Multiple inlet holes 541 are opened along the circumference of the dosing pipe 54. The dosing pipe 54 is sealed inside the conduit 122. A pumping pipeline system is used to transport aquaculture wastewater to the mixing chamber 11 of the dosing tank 1. The metering pump 41 draws wastewater from the bottom of the mixing chamber 11. Two bypass pipes 44 are connected to the drain pipe 43, circulating the wastewater through the volute 51, which rotates the impeller 52. The impeller 52 drives the dosing via the rotating rod 53. The rotation of pipe 54 causes the coagulant stored in the agent storage tank 12 to intermittently enter the dosing pipe 54 through the inlet hole 541 via the perforation 1221, and then fall into the mixing chamber 11 through the dosing pipe 54. The flow rate of the metering pump 41 can be electrically controlled, thereby controlling the speed of the impeller 52 to achieve automatic dosing of coagulant to the sewage based on flow control. The servo motor 31 drives multiple stirring blades 32 to rotate, which can make the sewage and coagulant fully mixed. The coagulated sewage discharged from the drain pipe 43 connected to the metering pump 41 can be transported to the coagulation filtration device to achieve coagulation filtration treatment.

[0031] As shown in Figures 1 and 2, the dosing tank 1 is equipped with a sewage inlet 111 at the upper end of the mixing chamber 11. The sewage inlet 111 is connected to a sewage pump through a pipe. The sewage pump is connected to the sewage inlet 111 through a pumping pipeline system, which can pump the treated sewage from the aquaculture farm into the mixing chamber 11.

[0032] As shown in Figures 2 and 3, a feeding port 121 is provided at the upper end cover of the agent storage tank 12, and a sealing ring is provided at the connection between the conduit 122 and the rotating rod 53. The sealing ring can be a lip-shaped or V-shaped sealing ring. The agent storage tank 12 can be filled with coagulant through the feeding port 121. The conduit 12 is equipped with a sealing ring structure inside. When the liquid inlet 541 is not connected to the perforation 1221, the filling pipe 54 and the conduit 122 can be blocked by the sealing ring.

[0033] As shown in Figures 1 and 2, the base 2 is fixedly connected to two L-shaped frames 21, and the L-shaped frames 21 are fixedly connected to limit rings 22. The outside of the dosing tank 1 is provided with an annular limit groove for embedding and installing the limit rings 22. The base 2 is fixedly connected to the limit rings 22 through the two L-shaped frames 21. The limit rings 22 can be used to limit the installation of the dosing tank 1.

[0034] As shown in Figures 2 and 3, a first solenoid valve 421 is installed on the suction pipe 42, and a second solenoid valve 441 is installed on a bypass pipe 44. By installing solenoid valves on the suction pipe 42 and the bypass pipe 44, the solenoid valves can be controlled by PLC electronic control technology to adjust the suction flow rate and the bypass flow rate. Then, by adjusting the bypass flow rate, the rotation speed of the impeller 52 can be controlled to achieve the purpose of automatic control of the agent dosing.

[0035] The working principle of this utility model is as follows:

[0036] The aquaculture wastewater is transported to the mixing chamber 11 of the dosing tank 1 using a pumping pipeline system. The metering pump 41 draws the wastewater from the bottom of the mixing chamber 11. Two bypass pipes 44 are connected to the drain pipe 43 and circulate through the volute 51, which can rotate the impeller 52. The impeller 52 drives the dosing pipe 54 to rotate through the rotating rod 53, so that the coagulant stored in the agent storage tank 12 enters the dosing pipe 54 intermittently through the inlet hole 541 through the perforation 1221 and falls into the mixing chamber 11 through the dosing pipe 54. The pumping flow rate of the metering pump 41 can be electrically controlled, thereby controlling the speed of the impeller 52 to achieve automatic dosing of coagulant to the wastewater based on flow control. The servo motor 31 drives multiple stirring blades 32 to rotate, which can fully mix the wastewater and the coagulant. The coagulated wastewater discharged from the drain pipe 43 connected to the metering pump 41 can be transported to the coagulation filtration device to achieve coagulation filtration treatment.

[0037] While the specific embodiments of this disclosure have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this disclosure. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this disclosure are still within the scope of protection of this disclosure.

Claims

1. A wastewater treatment reagent dosing device based on flow control, characterized in that, The device includes a dosing tank, which has a mixing chamber and a reagent storage tank inside. A stirring device is provided on the top of the dosing tank. The stirring device includes a servo motor. The output shaft of the servo motor extends movably into the mixing chamber and is fixedly connected to multiple stirring blades. A conduit is fixedly connected to the bottom of the reagent storage tank. Multiple perforations are opened along the circumference of the upper end of the conduit.

2. The wastewater treatment reagent dosing device based on flow control as described in claim 1, characterized in that, The bottom of the dosing tank is provided with a base, and a concave seat is fixed on the base. A flow control mechanism is installed on the concave seat. The flow control mechanism includes a metering pump, a suction pipe and a drain pipe. The suction pipe is horizontally connected to the metering pump, and the drain pipe is vertically connected to the metering pump. The metering pump is fixed to the concave seat by bolts and threads.

3. The wastewater treatment reagent dosing device based on flow control as described in claim 2, characterized in that, The water suction pipe is fixedly connected to the bottom of the dosing tank, and two bypass pipes are fixedly connected to the drain pipe.

4. The flow control based sewage treatment agent dosing device according to claim 1, characterized in that, The drug storage tank is equipped with a flow dosing mechanism, which includes a volute, an impeller, a rotating rod, and a dosing pipe. The volute is fixedly connected to two bypass pipes, the impeller is disposed inside the volute, the impeller is fixedly connected to the rotating rod, and the rotating rod is rotatably connected to the volute and the drug storage tank.

5. The flow control based sewage treatment agent dosing device according to claim 4, characterized in that, The bottom end of the rotating rod is fixedly connected to a dosing tube, which has multiple liquid inlet holes along its circumference and is sealed inside the conduit.

6. The wastewater treatment reagent dosing device based on flow control as described in claim 1, characterized in that, The dosing tank is located at the upper end of the mixing chamber and has a sewage inlet. The sewage inlet is connected to a sewage pump via a pipe.

7. The flow control based sewage treatment agent dosing device according to claim 1, characterized in that, The medicine storage tank is provided with a feeding port at the top cover, and a sealing ring is provided at the connection between the guide tube and the rotating rod.

8. The flow control based sewage treatment agent dosing device according to claim 2, characterized in that, The base is fixedly connected to two L-shaped frames, and the L-shaped frames are fixedly connected to limit rings.

9. The flow control based sewage treatment agent dosing device according to claim 1, characterized in that, The dosing tank is provided with an annular limiting groove on the outside for embedding and installing a limiting ring.

10. The flow control based sewage treatment agent dosing device according to claim 3, characterized in that, The water suction pipe is equipped with a first solenoid valve, and the bypass pipe is equipped with a second solenoid valve.

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