Buffer dosing device for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment buffer dosing device which comprises a dosing pump and a buffer, the buffer comprises a plurality of cavities, each cavity is provided with an overflow line position, and the horizontal heights of the overflow line positions of all the cavities are arranged from high to low. The liquid in the previous cavity can flow into the next cavity after exceeding the self overflow line position; the bottom of each cavity is communicated with a liquid outlet pipeline, each liquid outlet pipeline is provided with a flow meter and a liquid outlet self-control valve, and the flow meter and the liquid outlet self-control valve on each liquid outlet pipeline are in communication connection; except the cavity with the highest overflow line position, liquid level meters are arranged in the other cavities, and the liquid level meters are in communication connection with the liquid outlet self-control valves of the corresponding cavities. The device can ensure that the liquid outlet flow of the liquid medicine is uniform in the process of continuously adding the liquid medicine into the sewage.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment buffering and dosing device. Background Art

[0002] Since the advent of wastewater treatment technology, dosing tanks and pumps, key components of wastewater treatment, have seen significant breakthroughs and progress in design and control technology. In the early days, dosing equipment largely relied on manual operation, a method that was not only inefficient but also plagued by issues such as inaccurate dosages and cumbersome, complex operations, severely impacting the effectiveness and efficiency of wastewater treatment.

[0003] However, with the continuous advancement and innovation of science and technology, automatic control systems have been gradually introduced and widely used in dosing equipment. This change has enabled the precise metering and accurate addition of chemicals, greatly improving the accuracy and efficiency of wastewater treatment, while also reducing the burden of manual operation and the error rate.

[0004] At the same time, the continuous development and application of new materials have also provided strong support for the performance improvement and stability enhancement of dosing tanks and dosing pumps. The application of these new materials makes dosing equipment more corrosion-resistant and wear-resistant, significantly extending its service life, while also improving the overall performance and reliability of the equipment.

[0005] Despite this, typical dosing equipment and control systems in the current industry are quite mature and well-established, but they still face some challenges and problems. For example, the stirring device in the dosing tank sometimes fails to stir the agent sufficiently, resulting in insufficient dissolution of the agent. This can cause large fluctuations in the dosing pump flow rate, which in turn affects the stability and treatment effectiveness of the entire sewage treatment system. Utility Model Content

[0006] In order to solve the technical problem in the prior art that the stirring device in the dosing tank sometimes does not stir sufficiently, resulting in insufficient dissolution of the agent, which may cause large fluctuations in the flow of the dosing pump, the utility model provides a sewage treatment buffer dosing device.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A sewage treatment buffer dosing device comprises a dosing pump and a buffer, the buffer comprising a plurality of cavities, each cavity having an overflow line, the overflow lines of all cavities being arranged from high to low, and the liquid in the previous cavity can flow into the next cavity after exceeding its own overflow line; the bottom of each cavity is connected to a liquid outlet pipe, each liquid outlet pipe is provided with a flow meter and a liquid outlet automatic control valve, and the flow meter and the liquid outlet automatic control valve on each liquid outlet pipe are communicatively connected; except for the cavity with the highest overflow line, liquid level measuring meters are provided in other cavities, and the liquid level measuring meters are communicatively connected with the liquid outlet automatic control valve of the corresponding cavity; the pump outlet pipe of the dosing pump extends into the cavity with the highest overflow line, the pump outlet pipe is provided with a dosing automatic control valve, and the liquid level meter in the cavity with the lowest overflow line is communicatively connected with the dosing automatic control valve.

[0009] With this structural solution, the liquid medicine pumped out by the dosing pump will first flow into the cavity with the highest overflow line in the buffer, then flow to the cavity with the lower overflow line, reducing the flow fluctuation of the liquid medicine pumped out by the dosing pump. At this time, all the automatic dosing valves are closed. After each cavity is filled with liquid medicine, when the liquid level measuring meter in the cavity with the lowest overflow line detects that the liquid level in this cavity is higher than the set liquid level value, the automatic liquid outlet valve on the liquid outlet pipe at the bottom of the cavity opens. The flow meter controls the opening of the automatic liquid outlet valve according to the flow rate, ensuring a uniform liquid flow rate. Thereafter, when the liquid level meter detects that the liquid level of the corresponding cavity is lower than the set liquid level value, the liquid outlet automatic control valve on the liquid outlet pipe at the bottom of the cavity is closed, and the liquid outlet automatic control valve on the liquid outlet pipe at the bottom of the previous cavity is opened. When the liquid level meter detects that the liquid level of the corresponding cavity is higher than the set liquid level value again, the liquid outlet automatic control valve on the liquid outlet pipe at the bottom of the previous cavity is closed, and the liquid outlet automatic control valve on the liquid outlet pipe at the bottom of the cavity is opened. Only one of the liquid outlet automatic control valves corresponding to all cavities can be in the open state at a time to ensure uniform liquid outlet flow during continuous dosing. When the liquid level meter in the cavity with the lowest overflow line detects that the liquid level in this cavity is higher than the maximum liquid level, the dosing automatic control valve is closed and the dosing pump is automatically turned off to prevent the liquid from overflowing the cavity with the lowest overflow line, until the liquid level in the cavity with the lowest overflow line is lower than the maximum liquid level.

[0010] As a preferred implementation of a sewage treatment buffer dosing device, an agitator is provided in the cavity with the highest overflow line.

[0011] By adopting the above structural solution, the agitator can further fully dissolve the medicine in the medicine solution.

[0012] As a preferred implementation method of a sewage treatment buffer dosing device, the buffer includes a plurality of cylindrical tank bodies, each of which has an opening at the top and different bottom areas. The plurality of cylindrical tank bodies are arranged from the inside to the outside according to the size of the bottom area. The tank body with a larger bottom area has a lower horizontal height of the top opening edge. The space enclosed between each cylindrical tank body and the adjacent cylindrical tank body inside is the cavity of the cylindrical tank body, and the internal space of the cylindrical tank body with the smallest bottom area is the cavity of the cylindrical tank body.

[0013] By adopting the above structural solution, the buffer occupies a small area.

[0014] As a preferred implementation method of a sewage treatment buffer dosing device, the agitator includes a bracket and a stirring rod. The two ends of the bracket are supported on the top of a cylindrical tank body with the smallest bottom area. The stirring rod is located on the side of the bracket facing the inside of the cylindrical tank body, and several blades are installed on the outer peripheral surface of the stirring rod.

[0015] As a preferred implementation of a sewage treatment buffering and dosing device, three cylindrical tanks are provided.

[0016] As a preferred implementation of a sewage treatment buffering and dosing device, the cylindrical tank body is a cylindrical tank body.

[0017] The beneficial effects of the utility model include:

[0018] 1. The liquid medicine pumped out by the dosing pump will first flow into the cavity with the highest overflow line in the buffer, and then flow to the cavity with lower overflow line level one level at a time, reducing the flow fluctuation of the liquid medicine pumped out by the dosing pump.

[0019] 2. Among all the liquid outlet automatic control valves corresponding to the cavities, only one can be in the open state at a time to ensure that the liquid outlet flow rate is uniform during the continuous addition of the drug to the sewage.

[0020] 3. When the liquid level measuring instrument in the cavity with the lowest overflow line detects that the liquid level of the medicine in the cavity is higher than the maximum liquid level, the dosing automatic control valve is closed and the dosing pump is automatically shut down to prevent the medicine from overflowing the cavity with the lowest overflow line until the liquid level of the medicine in the cavity with the lowest overflow line is lower than the maximum liquid level. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a sewage treatment buffer dosing device in a specific embodiment of the present utility model;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the agitator in a specific embodiment of the present utility model.

[0024] List of parts and reference numerals:

[0025] 1. Dosing pump; 2. Buffer; 21. Cylindrical tank; 22. Cavity; 3. Liquid outlet pipe; 4. Flow meter; 5. Liquid outlet automatic control valve; 6. Liquid level meter; 7. Pump outlet pipe; 8. Dosing automatic control valve; 9. Agitator; 91. Bracket; 92. Stirring rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] Reference Figure 1-Figure 2 This embodiment proposes a sewage treatment buffer dosing device, including a buffer 2, which includes three cylindrical tank bodies 21. The cylindrical tank body 21 is a cylinder with an open top. The bottom areas of the three cylindrical tank bodies 21 are different. The three cylindrical tank bodies 21 are arranged from the inside to the outside according to the size of the bottom area, and the tank with a smaller bottom area is located in the tank with a larger bottom area. The larger the bottom area of ​​the tank body, the lower the horizontal height of the top opening edge. The space enclosed between each cylindrical tank body 21 and the adjacent cylindrical tank body 21 inside is the cavity 22 of the cylindrical tank body 21. The internal space of the cylindrical tank body 21 with the smallest bottom area is the cavity 22 of the cylindrical tank body 21. The top opening edge of each cylindrical tank body 21 is the overflow line position of the corresponding cavity 22 of the cylindrical tank body 21. Therefore, the horizontal heights of the overflow line positions of the cavities 22 from the inside to the outside are arranged from high to low. The liquid in the previous cavity 22 can flow into the next cavity 22 after exceeding its own overflow line position.

[0028] The bottom of each cavity 22 is connected to a liquid outlet pipe 3, each of which is equipped with a flow meter 4 and an automatic liquid outlet valve 5. The flow meter 4 and the automatic liquid outlet valve 5 on each liquid outlet pipe 3 are in communication with each other. Except for the cavity 22 with the highest overflow line, each cavity 22 is equipped with a liquid level meter 6, which is in communication with the automatic liquid outlet valve 5 of the corresponding cavity 22.

[0029] The sewage treatment buffer dosing device also includes a dosing pump 1. The pump outlet pipe 7 of the dosing pump 1 extends into the cavity 22 with the highest overflow line level. A dosing automatic control valve 8 is provided on the pump outlet pipe 7. The liquid level gauge in the cavity 22 with the lowest overflow line level is communicated with the dosing automatic control valve 8.

[0030] A stirrer 9 is located within the cavity 22, where the overflow line is highest. This stirrer 9 further dissolves the drug in the liquid. The stirrer 9 comprises a bracket 91 and a stirring rod 92. The bracket 91 is supported at both ends on the top of the cylindrical tank 21, which has the smallest bottom area. The stirring rod 92 is located on the side of the bracket 91 facing the interior of the cylindrical tank 21. Several blades are mounted on the outer circumference of the stirring rod 92. The stirring rod 92 is driven by a stirring motor (not shown).

[0031] The working principle of this embodiment is:

[0032] The liquid medicine pumped out by the dosing pump 1 will first flow into the cavity 22 with the highest overflow line in the buffer 2 (i.e., the cavity 22 corresponding to the innermost cylindrical tank body 21), and then flow step by step to the cavity 22 with a lower overflow line, thereby reducing the flow fluctuation of the liquid medicine pumped out by the dosing pump 1. At this time, all the dosing automatic control valves 8 are in the closed state.

[0033] After each cavity 22 is filled with liquid medicine, when the liquid level measuring meter 6 in the cavity 22 with the lowest overflow line (i.e., the cavity 22 corresponding to the outermost cylindrical tank body 21) detects that the liquid level of the liquid medicine in the cavity 22 is higher than the set liquid level value, the liquid outlet automatic control valve 5 on the liquid outlet pipe 3 at the bottom of the cavity 22 opens, and the flow meter 4 controls the opening of the liquid outlet automatic control valve 5 according to the flow rate to make the liquid outlet flow rate uniform.

[0034] Thereafter, when the liquid level meter 6 detects that the liquid level of the medicinal liquid in the corresponding cavity 22 is lower than the set liquid level value, the liquid outlet automatic control valve 5 on the liquid outlet pipe 3 at the bottom of the cavity 22 is closed, and the liquid outlet automatic control valve 5 on the liquid outlet pipe 3 at the bottom of the previous cavity 22 is opened. When the liquid level meter 6 detects that the liquid level of the medicinal liquid in the corresponding cavity 22 is higher than the set liquid level value again, the liquid outlet automatic control valve 5 on the liquid outlet pipe 3 at the bottom of the previous cavity 22 is closed, and the liquid outlet automatic control valve 5 on the liquid outlet pipe 3 at the bottom of the cavity 22 is opened. Only one of the liquid outlet automatic control valves 5 corresponding to all cavities 22 can be in the open state at a time, ensuring a uniform liquid outlet flow rate during continuous dosing.

[0035] When the liquid level measuring meter 6 in the cavity 22 with the lowest overflow line detects that the liquid level of the medicinal liquid in the cavity 22 is higher than the maximum liquid level, the dosing automatic control valve 8 is closed, and the dosing pump 1 is automatically closed to prevent the medicinal liquid from overflowing the cavity 22 with the lowest overflow line, until the liquid level of the medicinal liquid in the cavity 22 with the lowest overflow line is lower than the maximum liquid level. The above description of the disclosed embodiments enables professionals in this field to implement or use the present utility model. Various modifications to these embodiments will be obvious to professionals in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A sewage treatment buffer dosing device, comprising a dosing pump (1), characterized in that: The buffer (2) includes a plurality of cavities (22), each cavity (22) having an overflow line, the overflow lines of all cavities (22) being arranged from high to low, and the liquid in the previous cavity (22) can flow into the next cavity (22) after exceeding its own overflow line; The bottom of each cavity (22) is connected to a liquid outlet pipe (3), and each liquid outlet pipe (3) is provided with a flow meter (4) and a liquid outlet automatic control valve (5), and the flow meter (4) and the liquid outlet automatic control valve (5) on each liquid outlet pipe (3) are in communication connection; Except for the cavity (22) with the highest overflow line, all other cavities (22) are provided with liquid level measuring meters (6), and the liquid level measuring meters (6) are communicatively connected with the liquid outlet automatic control valve (5) of the corresponding cavity (22); The pump outlet pipe (7) of the dosing pump (1) extends into the cavity (22) with the highest overflow line position, a dosing automatic control valve (8) is provided on the pump outlet pipe (7), and a liquid level gauge in the cavity (22) with the lowest overflow line position is communicatively connected to the dosing automatic control valve (8).

2. A sewage treatment buffer dosing device according to claim 1, characterized in that: A stirrer (9) is provided in the cavity (22) where the overflow line is the highest.

3. A sewage treatment buffer dosing device according to claim 2, characterized in that: The buffer (2) includes a plurality of cylindrical tank bodies (21), each of which has an opening at the top. The bottom areas of the plurality of cylindrical tank bodies (21) are different. The plurality of cylindrical tank bodies (21) are arranged from the inside to the outside according to the size of the bottom area. The horizontal height of the edge of the top opening of the tank body with a larger bottom area is lower. The space enclosed between each cylindrical tank body (21) and the adjacent cylindrical tank body (21) inside is the cavity (22) of the cylindrical tank body (21), and the internal space of the cylindrical tank body (21) with the smallest bottom area is the cavity (22) of the cylindrical tank body (21).

4. A sewage treatment buffer dosing device according to claim 3, characterized in that: The stirrer (9) includes a bracket (91) and a stirring rod (92). Both ends of the bracket (91) are supported on the top of the cylindrical tank body (21) with the smallest bottom area. The stirring rod (92) is located on the side of the bracket (91) facing the inside of the cylindrical tank body (21). A plurality of blades are installed on the outer peripheral surface of the stirring rod (92).

5. A sewage treatment buffer dosing device according to claim 3, characterized in that: There are three cylindrical tank bodies (21).

6. A sewage treatment buffer dosing device according to claim 3, characterized in that: The cylindrical tank body (21) is a cylindrical tank body (21).

Images