Multi-channel dosing device for sewage treatment

Abstract

The utility model provides a multi-channel dosing device for sewage treatment, which comprises a main dosing pipe, a plurality of dosing pipes, a dosing pump, a backflushing pump, a plurality of electronic valves A, a plurality of electronic valves B and a controller, the plurality of dosing pipes are connected with the main dosing pipe in a cross manner, the electronic valves A are arranged on the main dosing pipe between two adjacent dosing pipes, and the backflushing pump is arranged on the main dosing pipe between the two adjacent dosing pipes. The electronic valve B is arranged between the connecting ends of the chemical feeding pipe and the main chemical feeding pipe, the chemical feeding pump is communicated with a first inlet of the main chemical feeding pipe, the two ends of the backflushing pump are connected with a water tank and a second inlet of the chemical feeding pump respectively, and the backflushing pump is connected with the chemical feeding pump. And the controller is in signal connection with the dosing pump, the backflushing pump, the plurality of electronic valves A and the electronic valve B. According to the utility model, various medicaments are added through one dosing pump, so that the dosing structure is simplified, the dosing performance is improved, and the dosing cost is reduced.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, specifically to a multi-channel dosing device for wastewater treatment. Background Technology

[0002] Wastewater treatment generally includes solid-liquid separation and liquid refining. First, impurities and liquid in the wastewater are separated, then the filtered liquid is treated to meet discharge standards. During liquid refining, wastewater treatment agents such as disinfectants and flocculants are added. Because different agents are needed for different wastewater treatments, different dosing pumps are required to add each agent individually, leading to complex piping in the dosing system and increasing the complexity of automatic pump control. Chinese patent CN220165868U proposes a wastewater treatment dosing skid, which uses a piping structure to accommodate dosing pumps of different sizes, thus allowing the addition of different agents. However, this piping structure only accommodates different pump sizes, making the entire dosing system complex. Furthermore, using multiple pumps to add different agents significantly increases the cost of the dosing system. Therefore, there is an urgent need to optimize existing dosing systems to simplify the structure, reduce costs, and improve performance while ensuring compatibility with different agents. Utility Model Content

[0003] This utility model provides a multi-channel dosing device for sewage treatment. By using backflushing to clean the dosing pump, it enables the addition of multiple agents through a single dosing pump, simplifying the dosing structure, improving dosing performance, reducing dosing costs, and solving the aforementioned related technical problems.

[0004] This utility model provides a multi-channel dosing device for sewage treatment, including a main dosing pipe, multiple inlet pipes, a dosing pump, a backwash pump, multiple electronic valves A, multiple electronic valves B, and a controller. The multiple inlet pipes are cross-connected to the main dosing pipe. An electronic valve A is provided on the main dosing pipe between two adjacent inlet pipes, and an electronic valve B is provided between the connection ends of the inlet pipes and the main dosing pipe. The dosing pump is connected to the first inlet of the main dosing pipe. The two ends of the backwash pump are respectively connected to a water tank and the second inlet of the dosing pump. The controller is signal-connected to the dosing pump, the backwash pump, the multiple electronic valves A, and the electronic valves B.

[0005] Optionally, it also includes a mixing tank, which is disposed on the main dosing pipe between the inlet pipe and the dosing pump.

[0006] Optionally, the mixing box is equipped with a mixing mechanism, which includes a base, a connecting shaft, blades, and a stirring rod. One end of the connecting shaft is rotatably connected to the base, and the blades and the stirring rod are alternately arranged on the connecting shaft.

[0007] Optionally, the stirring rod and the blade have different radii of rotation.

[0008] Optionally, the blades include blade A and blade B with opposite directions of rotation, and blade A and blade B are alternately arranged on the connecting shaft.

[0009] Optionally, the first inlet and the second inlet of the dosing pump are the same.

[0010] Optionally, it also includes a metering pump and a drug concentration detector. The metering pump is installed on multiple drug inlet pipes and is signal-connected to the controller. The drug concentration detector is installed at the connection between the main dosing pipe and the dosing pump.

[0011] Optionally, some of the drug inlet pipes may further include a dosing chamber, which is connected in series with the electronic valve B; the dosing chamber includes a separate first dosing end and a second dosing end, respectively configured to add liquid and solid drugs.

[0012] Optionally, it also includes a pipe rack, which is snapped into the main dosing pipe and multiple dosing inlet pipes, and the pipe rack is set horizontally, vertically or inclined to the ground.

[0013] The beneficial effects of this utility model are:

[0014] In the multi-channel dosing device for wastewater treatment provided in this utility model, multiple different inlet pipes are connected to a single dosing pump, enabling the addition of multiple different agents by a single pump, significantly reducing dosing costs. Simultaneously, the backwash pump allows the pump to push the first agent back into the inlet pipe during the interval between the introduction of two different agents, and also flushes the inner walls of the pump and the main dosing pipe, preventing interactions between different agents from affecting their effectiveness. The intelligent control of the electronic valve ensures that the different dosing pipes do not interfere with each other. During the backwashing of the pump, the electronic valve's control ensures that the returned solution flows accurately to the corresponding dosing pipe, improving dosing control performance. In short, this utility model simplifies the dosing mechanism, solves the problems of compatible addition of different agents, protecting the dosing pump, and improving dosing performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the axial structure of the multi-channel dosing device for wastewater treatment provided in the embodiments of this application;

[0016] Figure 2This diagram shows the cross-section and internal structure of the mixing tank in an embodiment of this application.

[0017] Figure label:

[0018] 1: Main dosing pipe; 2: Inlet pipe; 21: Dosing chamber; 3: Dosing pump; 4: Backflush pump; 5: Mixing tank; 51: Connecting shaft; 52: Blade; 53: Stirring rod. Detailed Implementation

[0019] The technical solutions in the embodiments of the application will now be clearly and completely described with reference to the accompanying drawings. Furthermore, the phrases "in one embodiment" or "in one embodiment" appearing throughout this specification do not necessarily refer to the same embodiment. Moreover, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0020] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or terminal device that includes that element.

[0021] Wastewater treatment generally includes solid-liquid separation and liquid refining. First, impurities and liquid in the wastewater are separated, then the filtered liquid is treated to meet discharge standards. During liquid refining, wastewater treatment agents such as disinfectants and flocculants are added. Because different agents are needed for wastewater treatment, different dosing pumps 3 are required to add each agent individually, leading to complex piping and increased complexity in the automatic control of the dosing pumps 3. Existing piping structures only accommodate different sizes of dosing pumps 3, but the entire dosing mechanism is complex, and using multiple dosing pumps 3 to add different agents significantly increases the cost. Therefore, this invention provides a multi-channel wastewater dosing device that allows multiple agents to be added using a single dosing pump 3, simplifying the dosing structure, improving dosing performance, reducing dosing costs, and solving the aforementioned technical problems. The specific details of this invention are as follows:

[0022] Please refer to the appendix. Figure 1 and attached Figure 2As shown: This utility model provides a multi-channel dosing device for sewage treatment, including a main dosing pipe 1, multiple inlet pipes 2, a dosing pump 3, a backwash pump 4, multiple electronic valves A, multiple electronic valves B, and a controller. The multiple inlet pipes 2 are cross-connected to the main dosing pipe 1. An electronic valve A is provided on the main dosing pipe 1 between two adjacent inlet pipes 2, and an electronic valve B is provided between the connection ends of the inlet pipes 2 and the main dosing pipe 1. The dosing pump 3 is connected to the first inlet of the main dosing pipe 1. The two ends of the backwash pump 4 are respectively connected to a water tank and the second inlet of the dosing pump 3. The controller is signal-connected to the dosing pump 3, the backwash pump 4, the multiple electronic valves A and B, and is used to control the opening and closing of the corresponding electronic valves and the pump.

[0023] like Figure 1 As shown, the dosing pump 3 is connected to a main dosing pipe 1, which has multiple inlet pipes 2 connected to it. The entry and exit of each inlet pipe 2 is controlled by an independent electronic valve B. An electronic valve A is installed between adjacent inlet pipes 2 on the main dosing pipe 1. This electronic valve controls whether the chemical solution from the inlet pipe 2 can enter the dosing pump 3 through the main dosing pipe 1. Furthermore, when the backwash pump 4 is operating, this electronic valve A effectively prevents the chemical solution from entering other unrelated inlet pipes 2, effectively avoiding mutual interference between the chemical solutions. The output end of the dosing pump 3 is directly connected to the wastewater treatment unit or to other mechanisms requiring chemical dosing.

[0024] like Figure 1 The solid arrows and the arrows indicating the working direction of the liquid in the pipeline when the dosing pump 3 and the backflush pump 4 are working, respectively, are used to show the direction of liquid flow in the pipeline.

[0025] In some embodiments, the dosing device further includes a mixing tank 5, which is disposed on the main dosing pipe 1 between the inlet pipe 2 and the dosing pump 3. The mixing tank 5 is provided with a mixing mechanism, which includes: a base, a connecting shaft 51, blades 52, and a stirring rod 53. One end of the connecting shaft 51 is rotatably connected to the base, and the blades 52 and the stirring rod 53 are alternately disposed on the connecting shaft 51.

[0026] like Figure 2 As shown, the function of the mixing tank 5 is to ensure that the liquid medicine delivered from the inlet pipe 2 is fully mixed with water before entering the dosing pump 3, thereby improving the uniformity of the dosing solution. The mixing mechanism inside the mixing tank 5 utilizes rotational stirring to rotate the liquid within the tank and mix the different components. A motor drives the connecting shaft 51 on the base to rotate at high speed, causing the blades 52 and stirring rods 53 on the connecting shaft 51 to rotate the liquid inside the tank. The blades 52 and stirring rods 53 are alternately positioned on the connecting shaft 51 to prevent the formation of fixed eddies in the liquid within the tank, which would be detrimental to liquid mixing.

[0027] In addition, the stirring rod 53 and the blade 52 in the aforementioned mixing tank 5 have different rotation radii. The different rotation radii are to take into account the liquid at different radii, so as to increase the uniformity of the mixture.

[0028] like Figure 2 As shown, the aforementioned blades 52 include blades A and B with opposite rotation directions, and blades A and B are alternately arranged on the connecting shaft 51. The effect of alternately arranging two types of blades 52 with opposite rotation directions is that, under the condition that the rotation direction of the connecting shaft 51 is constant, the liquid layer stirred by the blades 52 with the same rotation direction as the connecting shaft 51 and the liquid layer stirred by the blades 52 with the opposite rotation direction of the connecting shaft 51 can generate an interaction force, which promotes the mixing effect.

[0029] In some embodiments, the first inlet and the second inlet of the dosing pump 3 are the same. In this case, the time required for the backwash pump 4 to clean the residual drug solution inside the dosing pump 3 is longer than that of the aforementioned setting, but the effect of rinsing the drug solution remains the same.

[0030] In other embodiments, the present invention also includes a metering pump and a reagent concentration detector. The metering pump is installed on multiple inlet pipes 2 and is signal-connected to a controller. The reagent concentration detector is installed at the connection between the main dosing pipe 1 and the dosing pump 3, and is used to detect the concentration of the reagent in the pipeline, to detect whether the reagent in the pipeline meets the preset dosing concentration, so as to facilitate the control of the dosing amount, and at the same time to confirm whether the backflushing cleaning is thorough.

[0031] In addition, in some embodiments, the aforementioned drug inlet pipe 2 further includes a drug dosing chamber 21, which is connected in series with the electronic valve B; the drug dosing chamber 21 includes an independent first dosing end and a second dosing end, which are respectively configured to add liquid drugs and solid drugs. It also includes a pipe rack, which is snapped into the main drug dosing pipe 1 and multiple drug inlet pipes 2, and the pipe rack is arranged horizontally, vertically, or inclined to the ground.

[0032] In this embodiment, the dosing chamber 21 is the structure in the dosing pipe 2 used to add drugs into the pipe. Before adding drugs, the electronic valve B needs to be closed to prevent the added drugs from flowing out before they are fully dissolved or mixed, which would affect the overall dosing effect. The independent first and second dosing ends are used to add liquid and solid drugs respectively, because different drug forms require different dosing structures. This embodiment does not impose specific restrictions on the structure, quantity, or installation position of the first and second dosing ends, and can be adapted to actual usage.

[0033] Finally, this utility model provides a multi-channel dosing device for wastewater treatment, including a main dosing pipe 1, multiple inlet pipes 2, a dosing pump 3, a backwash pump 4, multiple electronic valves A, multiple electronic valves B, and a controller. The multiple inlet pipes 2 are cross-connected to the main dosing pipe 1. An electronic valve A is installed on the main dosing pipe 1 between adjacent inlet pipes 2, and an electronic valve B is installed between the connection ends of the inlet pipes 2 and the main dosing pipe 1. The dosing pump 3 is connected to the first inlet of the main dosing pipe 1. The two ends of the backwash pump 4 are connected to a water tank and the second inlet of the dosing pump 3, respectively. The controller is signal-connected to the dosing pump 3, the backwash pump 4, the multiple electronic valves A, and the electronic valves B. This utility model enables the addition of multiple chemicals through a single dosing pump 3, simplifying the dosing structure, improving dosing performance, and reducing dosing costs.

[0034] It should be noted that all the above embodiments belong to the same inventive concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not exhaustive, please refer to the description in other embodiments. The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to mutually.

[0035] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-channel dosing device for wastewater treatment, characterized in that, The device includes a main dosing pipe (1), multiple inlet pipes (2), a dosing pump (3), a backflush pump (4), multiple electronic valves A and B, and a controller. The multiple inlet pipes (2) are cross-connected to the main dosing pipe (1). An electronic valve A is provided between two adjacent inlet pipes (2) on the main dosing pipe (1). An electronic valve B is provided between the connection ends of the inlet pipes (2) and the main dosing pipe (1). The dosing pump (3) is connected to the first inlet of the main dosing pipe (1). The two ends of the backflush pump (4) are respectively connected to the water tank and the second inlet of the dosing pump (3). The controller is signal-connected to the dosing pump (3), the backflush pump (4), the multiple electronic valves A, and the electronic valves B.

2. The multi-channel dosing device for wastewater treatment according to claim 1, characterized in that, It also includes a mixing tank (5), which is located on the main dosing pipe (1) between the inlet pipe (2) and the dosing pump (3).

3. The multi-channel dosing device for wastewater treatment according to claim 2, characterized in that, The mixing box (5) is equipped with a mixing mechanism, which includes a base, a connecting shaft (51), blades (52), and a stirring rod (53). One end of the connecting shaft (51) is rotatably connected to the base, and the blades (52) and the stirring rod (53) are alternately arranged on the connecting shaft (51).

4. The multi-channel dosing device for wastewater treatment according to claim 3, characterized in that, The stirring rod (53) has a different radius of rotation than the blade (52).

5. The multi-channel dosing device for wastewater treatment according to claim 3, characterized in that, The blade (52) includes blade A and blade B with opposite directions of rotation, and blade A and blade B are alternately arranged on the connecting shaft (51).

6. The multi-channel dosing device for wastewater treatment according to claim 1, characterized in that, The first inlet and the second inlet of the dosing pump (3) are the same.

7. The multi-channel dosing device for wastewater treatment according to claim 1, characterized in that, It also includes a metering pump and a drug concentration detector. The metering pump is installed on multiple drug inlet pipes (2) and is signal-connected to the controller. The drug concentration detector is installed at the connection between the main drug dosing pipe (1) and the drug dosing pump (3).

8. The multi-channel dosing device for wastewater treatment according to claim 1, characterized in that, The inlet tube (2) also includes a dosing chamber (21), which is connected in series with the electronic valve B; the dosing chamber (21) includes a separate first dosing end and a second dosing end, which are respectively set to add liquid drugs and solid drugs.

9. The multi-channel dosing device for wastewater treatment according to claim 1, characterized in that, It also includes a pipe rack, which is connected to the main dosing pipe (1) and multiple dosing pipes (2), and the pipe rack is set horizontally, vertically or inclined to the ground.

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