A water treatment flocculation dosing device

Abstract

This utility model provides a water treatment flocculation dosing device, including a storage tank, a check valve installed at the inlet end of a water pump, the check valve being connected to the storage tank and open towards the water pump, a cylinder installed at the outlet end of the water pump, and a delivery pipe installed at the top of the cylinder. This utility model has the following advantages: the dual liquid retention structure of the check valve and the cylinder ensures that the impeller chamber is always full of liquid, and the delivery function can be quickly restored even with high-frequency start and stop of the water pump, adapting to intermittent dosing scenarios. When the water pump is restarted, it can draw liquid normally without manual replenishment, eliminating air binding phenomenon, ensuring the continuity of the flocculation dosing process, and eliminating the need to interrupt water treatment operations due to air binding.

Description

Technical Field

[0001] This utility model is a water treatment flocculation dosing device, belonging to the field of wastewater treatment. Background Technology

[0002] In the flocculation dosing process of water treatment, the water pump is the core conveying equipment connecting the storage tank and the water treatment container. The pump drives the impeller to rotate, generating negative pressure to draw the flocculant solution from the storage tank into the impeller chamber. The centrifugal force of the impeller then pressurizes and delivers the solution to the water treatment container, ensuring the flocculant is added evenly according to the preset dosage, guaranteeing the subsequent softening and clarification of wastewater. This negative pressure suction method places extremely high demands on the sealing and liquid filling degree of the pump impeller chamber. Cavitation in the impeller chamber directly affects the conveying efficiency. When the pump stops working, a problem of "chemical backflow and air entry" can easily occur: due to the liquid level difference between the storage tank and the water treatment container, or the lack of a check valve in the pump's inlet and outlet pipes, the chemical solution in the impeller chamber can flow back into the storage tank along the inlet pipe after the pump stops, causing a cavity to form inside the impeller chamber. External air then seeps in and fills the impeller chamber. When the water pump restarts, the negative pressure generated by the impeller rotation is insufficient to overcome the air resistance. The compressibility of air prevents the impeller from effectively forming a negative pressure to draw in liquid, resulting in the phenomenon of "not being able to extract the liquid" due to air binding. This leads to the interruption of flocculation and dosing, affecting the continuity of the water treatment process.

[0003] To address the air binding issue, traditional operation and maintenance relies on manual intervention: operators must manually disassemble the pump end cover after shutdown, slowly add liquid media (usually clean water or the chemical solution to be delivered) into the impeller chamber, purge air from the chamber, and then reassemble and restart. This process not only requires interrupting the chemical dosing operation but also demands that operators possess certain equipment disassembly and assembly skills. Furthermore, manual liquid addition makes it difficult to accurately control the filling volume; insufficient addition can leave air residue, while excessive addition may lead to chemical spillage and environmental pollution. Frequent and prolonged manual operation is not only time-consuming and labor-intensive but also increases equipment downtime and reduces overall water treatment efficiency, a problem that is particularly pronounced in intermittent chemical dosing scenarios requiring frequent pump start-stop cycles. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a water treatment flocculation dosing device to solve the problems mentioned in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water treatment flocculation dosing device, comprising: Medicine storage tank; The water pump has a check valve installed at the inlet end. The check valve is connected to the medicine storage tank and is open towards the water pump. A cylinder is installed at the outlet end of the water pump, and an infusion pipe is installed on the top of the cylinder.

[0006] Furthermore, a bracket is provided on the lower side of the cylinder. The bracket has a "U"-shaped structure, and the top of the bracket is in contact with the bottom of the cylinder.

[0007] Furthermore, the bracket has a base on its lower side, a support is installed on the upper surface of the base, the water pump is installed on the upper surface of the support, and fixing holes for inserting bolts are opened at the four corners of the upper surface of the base. The bottom of the bracket has two through holes that are aligned with the two fixing holes on the base.

[0008] Furthermore, a support lug is installed on the outer surface of the lower end of the cylinder, a first small hole is opened on the upper surface of the support lug, and a second small hole is opened on the upper surface of the bracket, which is aligned with the first small hole. A screw is inserted into the channel formed by the first small hole and the second small hole, and a nut located below the second small hole is threaded to one end of the screw.

[0009] Furthermore, the top of the bracket has a first elongated oval opening, and the vertical part of the bracket has a second elongated oval opening.

[0010] Furthermore, a connecting pipe is installed at the end of the check valve away from the water pump, and the end of the connecting pipe away from the check valve is installed at the lower part of the outer surface of the medicine storage tank.

[0011] Furthermore, a straight pipe is installed at the lower end of the cylinder, and the lower end of the straight pipe is connected to the liquid outlet of the water pump.

[0012] Furthermore, a lid is installed on the top of the medicine storage tank, and a feeding port is opened on the upper surface of the lid. A movable cover is inserted into the feeding port. A base is installed at the bottom of the medicine storage tank, and a drain valve is installed at the lower part of the outer surface of the medicine storage tank.

[0013] Furthermore, a motor is installed on the upper surface of the barrel lid, and a stirrer is installed on the output shaft of the motor. The stirrer is located inside the medicine storage barrel.

[0014] The beneficial effects of this utility model are: The check valve installed at the pump inlet only opens towards the pump, fundamentally solving the problem of backflow of chemicals after pump shutdown. When the pump is running, the chemicals push the check valve core open, smoothly entering the impeller chamber. After the pump stops, the check valve core automatically closes under its own weight and residual pressure in the pipeline, preventing the chemicals in the impeller chamber from flowing back to the storage tank along the inlet pipe. This ensures that the impeller chamber is always full of chemicals, with no cavities formed. This design prevents air from seeping into the impeller chamber, and the pump can draw liquid normally without manual replenishment when restarted, eliminating air binding and ensuring the continuity of the flocculation dosing process without interrupting water treatment operations due to air binding.

[0015] The pump outlet is connected to a cylinder via a straight pipe. The delivery pipe at the top of the cylinder delivers the chemical solution to the water treatment container. After the pump stops, the residual chemical solution in the cylinder can be reversed through the straight pipe to fill the pump outlet, further replenishing the impeller chamber liquid volume. At the same time, the volume buffering effect of the cylinder reduces fluctuations in the chemical solution in the pipeline, helping to maintain stable impeller chamber pressure. The dual liquid retention structure of check valve + cylinder ensures that the impeller chamber is always full of liquid. Even with frequent pump start-stop, the delivery function can be quickly restored, making it suitable for intermittent dosing scenarios. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a water treatment flocculation dosing device according to the present invention; Figure 2 This is another perspective view of a water treatment flocculation dosing device according to the present invention; Figure 3 This is a schematic diagram of the assembly of the bracket, check valve and water pump in a water treatment flocculation dosing device according to the present invention. Figure 4 This is a schematic diagram of the assembly of the motor, agitator and tank lid in a water treatment flocculation dosing device according to the present invention. In the picture: 1. Medicine storage tank; 11. Base; 12. Drain valve; 13. Movable cover; 14. Tank lid; 2. Water pump; 21. Bracket; 22. Base; 23. Check valve; 24. Connecting pipe; 3. Cylinder; 31. Infusion tubing; 32. Bracket; 33. Straight tube; 34. First oblong opening; 35. Second oblong opening; 4. Motor; 41. Agitator. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figures 1-4This utility model provides a technical solution: a water treatment flocculation dosing device, including a storage tank 1, a tank cover 14 installed on the top of the storage tank 1, a feeding port on the upper surface of the tank cover 14, a movable cover 13 inserted into the feeding port, a base 11 installed at the bottom of the storage tank 1, the base 11 increasing the contact area between the storage tank 1 and the ground, improving placement stability; a drain valve 12 is installed at the lower part of the outer surface of the storage tank 1, opening the drain valve 12 facilitates the discharge of residual liquid in the storage tank 1, facilitating equipment cleaning and maintenance. A motor 4 is installed on the upper surface of the tank cover 14, and an agitator 41 is installed on the output shaft of the motor 4, the agitator 41 being disposed inside the storage tank 1. The feed port of the barrel lid 14 is matched with the movable lid 13 to facilitate the rapid replenishment of flocculant. The movable lid 13 can prevent dust and impurities from entering the storage tank 1 and contaminating the medicine solution. The motor 4 drives the stirrer 41 to rotate, which can fully mix the flocculant and solvent in the storage tank 1, avoid flocculant precipitation and clumping, ensure uniform concentration of medicine solution, and provide a guarantee for subsequent stable dosing.

[0019] See Figures 1-3 A check valve 23 is installed at the inlet of water pump 2. A connecting pipe 24 is installed at the end of check valve 23 away from water pump 2. The end of connecting pipe 24 away from check valve 23 is installed at the lower part of the outer surface of the storage tank 1. Connecting pipe 24 connects check valve 23 to storage tank 1, and check valve 23 is directed towards water pump 2. When water pump 2 is working, the liquid pushes the valve core of check valve 23 to open, smoothly entering the impeller chamber. After the pump stops, the valve core of check valve 23 automatically closes under its own weight and the residual pressure in the pipeline, preventing the liquid in the impeller chamber from flowing back to storage tank 1 along connecting pipe 24, ensuring that the impeller chamber is always full of liquid and no cavity is formed. This design prevents air from seeping into the impeller chamber. When water pump 2 is restarted, it can draw liquid normally without manual replenishment, eliminating air binding and ensuring the continuity of the flocculation dosing process without interrupting water treatment operations due to air binding.

[0020] A straight pipe 33 is installed at the lower end of the cylinder 3, and the lower end of the straight pipe 33 is connected to the outlet end of the water pump 2. A delivery pipe 31 is installed at the top of the cylinder 3. The outlet end of the water pump 2 is connected to the cylinder 3 through the straight pipe 33, and the delivery pipe 31 at the top of the cylinder 3 delivers the chemical solution to the water treatment container. After the pump stops, the residual chemical solution in the cylinder 3 can be reversed through the straight pipe 33 to fill the outlet end of the water pump 2, further replenishing the liquid volume in the impeller chamber. At the same time, the volume buffering effect of the cylinder 3 reduces the fluctuation of the chemical solution in the pipeline and helps maintain the stability of the impeller chamber pressure. The dual liquid retention structure of the check valve 23 and the cylinder 3 ensures that the impeller chamber is always in a full liquid state. Even if the water pump 2 is started and stopped frequently, the delivery function can be quickly restored, which is suitable for intermittent dosing scenarios.

[0021] See Figures 1-3A bracket 32 ​​is provided on the lower side of the cylinder 3. The bracket 32 ​​has a "U"-shaped structure. The top of the bracket 32 ​​has a first elongated oval opening 34, and the vertical part of the bracket 32 ​​has a second elongated oval opening 35. The first elongated oval opening 34 and the second elongated oval opening 35 can reduce the amount of material used in the production of the bracket 32 ​​and reduce the overall weight of the equipment. The top of the bracket 32 ​​is in contact with the bottom of the cylinder 3. The lower outer surface of the cylinder 3 is equipped with a lug. The upper surface of the lug has a first small hole. The upper surface of the bracket 32 ​​has a second small hole that is aligned with the first small hole. A screw is inserted into the channel formed by the first and second small holes, and a nut located below the second small hole is threaded to one end of the screw, so that the relative position of the bracket 32 ​​and the cylinder 3 remains unchanged. The bracket 32 ​​has a base 22 on its lower side, and a bracket 21 is installed on the upper surface of the base 22. The water pump 2 is installed on the upper surface of the bracket 21. The base 22 and the bracket 21 together support the water pump 2. The four corners of the upper surface of the base 22 are provided with fixing holes for inserting bolts. The bottom of the bracket 32 ​​has two through holes that are aligned with the two fixing holes on the base 22. When the position of the base 22 is restricted by bolts, the bolts pass through the channel formed by the through holes and the fixing holes, thereby restricting the position of the bracket 32 ​​and reducing the number of bolts used. At this time, the bracket 32 ​​supports the cylinder 3 and improves the stability of the overall structure.

[0022] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water treatment flocculation dosing device, characterized in that, include: Medicine storage tank (1); The water pump (2) has a check valve (23) installed at the inlet end. The check valve (23) is connected to the medicine storage tank (1) and the check valve (23) is open in the direction close to the water pump (2). A cylinder (3) is installed at the outlet end of the water pump (2), and an infusion pipe (31) is installed on the top of the cylinder (3).

2. The water treatment flocculation dosing equipment according to claim 1, characterized in that: The cylinder (3) is provided with a bracket (32) on the lower side. The bracket (32) has a "U" shaped structure and the top of the bracket (32) is in contact with the bottom of the cylinder (3).

3. The water treatment flocculation dosing equipment according to claim 2, characterized in that: The bracket (32) has a base (22) on its lower side. A bracket (21) is installed on the upper surface of the base (22). The water pump (2) is installed on the upper surface of the bracket (21). Fixing holes for inserting bolts are provided at the four corners of the upper surface of the base (22). Two through holes are provided at the bottom of the bracket (32) that are aligned with the two fixing holes on the base (22).

4. The water treatment flocculation dosing equipment according to claim 3, characterized in that: The lower end of the cylinder (3) is provided with a lug, and the upper surface of the lug is provided with a first small hole. The upper surface of the bracket (32) is provided with a second small hole that is aligned with the first small hole. A screw is inserted into the channel formed by the first small hole and the second small hole. One end of the screw is threadedly connected to a nut located below the second small hole.

5. The water treatment flocculation dosing equipment according to claim 4, characterized in that: The bracket (32) has a first elongated oval opening (34) at its top and a second elongated oval opening (35) at its vertical part.

6. The water treatment flocculation dosing equipment according to claim 1, characterized in that: The check valve (23) is connected to a connecting pipe (24) at one end away from the water pump (2), and the connecting pipe (24) at the other end away from the check valve (23) is installed on the lower part of the outer surface of the medicine storage tank (1).

7. The water treatment flocculation dosing equipment according to claim 1, characterized in that: A straight pipe (33) is installed at the lower end of the cylinder (3), and the lower end of the straight pipe (33) is connected to the liquid outlet of the water pump (2).

8. The water treatment flocculation dosing equipment according to claim 1, characterized in that: The top of the medicine storage tank (1) is equipped with a lid (14), and the upper surface of the lid (14) is provided with a feeding port. A movable cover (13) is inserted into the feeding port. The bottom of the medicine storage tank (1) is equipped with a chassis (11), and a drain valve (12) is installed at the lower part of the outer surface of the medicine storage tank (1).

9. A water treatment flocculation dosing device according to claim 8, characterized in that: A motor (4) is installed on the upper surface of the barrel lid (14), and a stirrer (41) is installed on the output shaft of the motor (4). The stirrer (41) is located inside the medicine storage barrel (1).

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