One-to-one dosing device for sewage treatment

Abstract

The utility model relates to the technical field of chemical feeding devices, and discloses a one-to-one chemical feeding device for sewage treatment, which comprises a stainless steel shell, an air inlet pressure stabilizing module, a chemical feeding module, a chemical feeding module and an overflow emptying mechanism. According to the one-to-one medicine adding device for sewage treatment, through mutual cooperation of the air inlet pressure stabilizing module and the medicine adding module, liquid medicine in a pressure medicine tank can be stably added to a medicine adding point according to the input flow in an air inlet pressurization mode, and the input end of an external air inlet pipe is connected with an external air source; in this way, an external air source can be conveyed into the prefabricated air pipe through the external air inlet pipe, liquid medicine in the pressure gallipot is appropriately pressurized through the prefabricated air pipe, the pressure monitor can monitor the pressure in the pressure gallipot in real time, and pressure data are displayed through the pressure gauge; the liquid level meter can detect the liquid level of liquid medicine in the pressure medicine tank, and then the liquid medicine can be stably conveyed to a dosing point through the prefabricated dosing pipe and the external dosing pipe by opening the fifth special valve and the dosing valve.

Description

Technical Field

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

[0002] Wastewater treatment plants are currently the main form of wastewater treatment in my country, and they are divided into municipal wastewater treatment plants, industrial wastewater treatment plants, and industrial park wastewater treatment plants. Whether it is domestic sewage or industrial wastewater, the treatment methods are physicochemical and biological methods. For different types of wastewater, physicochemical methods require the addition of different types of reagents for acid-base neutralization, oxidation-reduction, or coagulation and sedimentation; biological treatment methods require the addition of carbon sources or the replenishment of alkalinity according to the water quality to ensure the stable operation of the biological system.

[0003] Currently, electromagnetic flowmeters or rotor flowmeters are commonly used in conjunction with dosing pumps for chemical dosing control in wastewater treatment. However, after a period of operation, if the flowmeters experience wear and scaling, their accuracy will decrease, leading to inaccurate dosing. To address these issues and optimize the dosing method, a one-to-one dosing device for wastewater treatment is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a one-to-one dosing device for wastewater treatment, which uses a pressure method to achieve a stable and measurable dosing flow rate, reducing operation and maintenance work, lowering operating energy consumption, and saving costs.

[0005] To achieve the above objectives, this application provides the following technical solution: a one-to-one dosing device for wastewater treatment, comprising a stainless steel shell, an air inlet pressure stabilizing module, a dosing module, a dosing module, and an overflow venting mechanism. The air inlet pressure stabilizing module includes two pressure tanks fixedly connected inside the stainless steel shell. A pressure monitoring instrument is installed on the top of each pressure tank, and a level gauge is installed on the top of each pressure tank. The detection element of the level gauge is located inside the pressure tank. A pre-fabricated gas pipe connects the two pressure tanks. Both sides of the pre-fabricated gas pipe are equipped with an air inlet valve and a No. 1 dedicated valve. The input end of the pre-fabricated gas pipe is connected to an external air inlet pipe. The outer surface of the external air inlet pipe is fixedly connected to the inner wall of the stainless steel shell. An electro-proportional valve and a No. 2 dedicated valve are installed on the pipe section of the external air inlet pipe. An automatic control box is installed inside the stainless steel shell. A touch screen that is electrically connected to the automatic control box is installed on the front of the stainless steel shell. The electrical components inside the air inlet pressure stabilizing module, the drug delivery module, the drug dosing module, and the overflow venting mechanism are all electrically connected to the automatic control box.

[0006] The above scheme, with its coordinated air intake and pressure stabilization module and dosing module, allows for the stable delivery of the liquid medicine inside the pressure tank to the dosing point according to the input flow rate through air intake pressurization. The input end of the external air intake pipe is connected to an external air source, allowing external air to be delivered to the pre-pressurized air pipe. The pre-pressurized air pipe then appropriately pressurizes the liquid medicine inside the pressure tank. The pressure monitor can monitor the pressure inside the pressure tank in real time and display the pressure data through the pressure gauge, while the level gauge can detect the liquid level inside the pressure tank.

[0007] Furthermore, each of the pressure tanks is connected to a pressure relief pipe at its top, and each section of the pressure relief pipe is equipped with a No. 3 special valve and a pressure relief valve.

[0008] With the above solution, when the internal pressure of the pressure tank is too high, the pressure can be released by using the pressure relief pipe, the No. 3 special valve, and the pressure relief valve.

[0009] Furthermore, the drug feeding module includes a pre-made drug feeding tube and an external drug feeding tube. The external drug feeding tube is connected to the input end of the pre-made drug feeding tube. The two ends of the pre-made drug feeding tube are respectively installed inside two pressure tanks. Both sides of the pre-made drug feeding tube are equipped with a drug feeding valve and a No. 4 special valve. The outer surface of the external drug feeding tube is fixedly connected to the inner wall of the stainless steel shell.

[0010] With the above scheme, when both the inlet valve and the No. 4 special valve are open, the liquid medicine in the preparation tank can be conveniently transported to the two pressure tanks through the external inlet pipe and the prefabricated inlet pipe.

[0011] Furthermore, the dosing module includes a prefabricated dosing pipe and an external dosing pipe. One end of the external dosing pipe is connected to the output port of the prefabricated dosing pipe. Both sides of the prefabricated dosing pipe are equipped with a No. 5 special valve and a dosing valve. The outer surface of the external dosing pipe is fixedly connected to the inner wall of the stainless steel shell.

[0012] With the above scheme, when both the No. 5 special valve and the dosing valve are in the open state, the liquid medicine in the pressure tank can be transported to the dosing point through the prefabricated dosing pipe and the external dosing pipe.

[0013] Furthermore, the overflow venting mechanism includes an overflow pipe connected to the top of the two pressure tanks, and each overflow pipe is equipped with a No. 6 special valve and an overflow valve.

[0014] The above scheme allows for the convenient discharge of liquid overflowing from the pressure tank via the overflow pipe using the No. 6 special valve and overflow valve.

[0015] Furthermore, each of the pressure tanks is connected to a drain pipe at its bottom, and the bottom ends of the two overflow pipes are respectively connected to the interior of the two drain pipes. Each drain pipe section is equipped with a No. 7 special valve, and the outer surfaces of the two drain pipes are respectively fixedly connected to the inner walls on both sides of the stainless steel shell.

[0016] With the above solution, when the No. 7 special valve is opened, the liquid inside the corresponding pressure tank can be emptied through the drain pipe.

[0017] Furthermore, each of the four corners of the bottom surface of the stainless steel shell is fixedly connected with a support column, and the bottom surface of each support column is provided with an anti-slip pad or a fixing plate.

[0018] The above-described solution allows the support pillars to be placed more stably on the contact surface, improving overall stability.

[0019] Furthermore, a detachable cover plate is installed on the top of the stainless steel shell, and a groove is provided on the top of each cover plate. A double door is installed on the back of the stainless steel shell.

[0020] The above-mentioned design allows staff to easily perform regular maintenance on the level gauge and pressure monitor, while the double-door design facilitates regular maintenance on the components inside the stainless steel casing.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This is a one-to-one dosing device for wastewater treatment. Through the coordinated operation of an air intake and pressure stabilization module and a dosing module, the device pressurizes the air intake to stably deliver the chemical solution inside the pressure tank to the dosing point according to the input flow rate. The input end of the external air intake pipe is connected to an external air source, allowing external air to be supplied to a pre-fabricated air pipe. This pre-fabricated air pipe then appropriately pressurizes the chemical solution inside the pressure tank, maintaining a constant internal pressure. A pressure monitor can monitor the internal pressure of the pressure tank in real time and display the pressure data via a pressure gauge. A level gauge can detect the liquid level inside the pressure tank. Opening the No. 5 dedicated valve and the dosing valve allows the chemical solution to be stably delivered to the dosing point through the pre-fabricated dosing pipe and the external dosing pipe. This device solves the problems mentioned in the background technology, achieving a stable and measurable dosing flow rate, reducing operation and maintenance work, lowering operating energy consumption, and saving costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall front view of the structure of this application;

[0024] Figure 2This is a schematic diagram of the overall rear view structure of this application;

[0025] Figure 3 This is a top view of the structure of this application.

[0026] Figure 4 This is a partial top view of the structure of this application;

[0027] Figure 5 This is a partial bottom view of the structure of this application;

[0028] Figure 6 For the structure of this application Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0029] In the picture:

[0030] 1. Stainless steel casing; 2. Air intake pressure stabilizing module; 201. Pressure tank; 202. Pressure monitor; 203. Pressure relief valve; 204. Level gauge; 205. Pre-fabricated air pipe; 206. Air intake valve; 207. Dedicated valve No. 1; 208. External air intake pipe; 209. Electro-proportional valve; 210. Dedicated valve No. 2; 211. Pressure relief pipe; 212. Dedicated valve No. 3; 3. Drug inlet module; 301. Pre-fabricated drug inlet pipe; 302. External... 4. Dosing module; 303. Dosing valve; 304. Special valve No. 4; 5. Dosing module; 401. Prefabricated dosing pipe; 402. External dosing pipe; 403. Special valve No. 5; 404. Dosing valve; 6. Overflow and venting mechanism; 501. Overflow pipe; 502. Special valve No. 6; 503. Overflow valve; 504. Vent pipe; 505. Special valve No. 7; 7. Automatic control box; 8. Touch screen; 9. Support column; 10. Cover plate; 11. Double door. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 2 , Figure 3 and Figure 4This embodiment of a one-to-one dosing device for wastewater treatment includes a stainless steel shell 1, an air inlet pressure stabilizing module 2, a dosing module 3, a dosing module 4, and an overflow venting mechanism 5. The air inlet pressure stabilizing module 2 includes two pressure tanks 201 fixedly connected inside the stainless steel shell 1. Each pressure tank 201 is equipped with a pressure monitoring instrument 202 on its top. The pressure monitoring instrument 202 can monitor the pressure inside the pressure tank 201 in real time. Each pressure tank 201 is also equipped with a level gauge 204 on its top. The detection element of the level gauge 204 is located inside the pressure tank 201. The level gauge 204 can monitor the liquid level inside the corresponding pressure tank 201 in real time.

[0033] Please see Figure 3 , Figure 4 and Figure 5 A pre-fabricated gas pipe 205 connects the two pressure tanks 201. An inlet valve 206 and a first-purpose valve 207 are installed on both sides of the pre-fabricated gas pipe 205. An external inlet pipe 208 is connected to the inlet end of the pre-fabricated gas pipe 205. The outer surface of the external inlet pipe 208 is fixedly connected to the inner wall of the stainless steel outer casing 1. An electro-proportional valve 209 and a second-purpose valve 210 are installed on the section of the external inlet pipe 208. The inlet end of the external inlet pipe 208 is connected to an external gas source. The system is equipped with a phase connection, and the pressure of the gas supplied from external equipment can be easily adjusted through the electric proportional valve 209. Each pressure tank 201 is connected to a pressure relief pipe 211 at its top. Each section of the pressure relief pipe 211 is equipped with a No. 3 special valve 212 and a pressure relief valve 203. When the internal pressure of the pressure tank 201 is too high, the pressure tank 201 can be depressurized through the pressure relief pipe 211, the No. 3 special valve 212 and the pressure relief valve 203.

[0034] Please see Figure 3 , Figure 4 and Figure 5 The drug feeding module 3 includes a pre-fabricated drug feeding pipe 301 and an external drug feeding pipe 302. The external drug feeding pipe 302 is connected to the input end of the pre-fabricated drug feeding pipe 301. The two ends of the pre-fabricated drug feeding pipe 301 are respectively installed inside the two pressure tanks 201. Both sides of the pre-fabricated drug feeding pipe 301 are equipped with a drug feeding valve 303 and a No. 4 special valve 304. The outer surface of the external drug feeding pipe 302 is fixedly connected to the inner wall of the stainless steel shell 1. When both the drug feeding valve 303 and the No. 4 special valve 304 are in the open state, the drug solution in the preparation tank can be conveniently transported to the two pressure tanks 201 through the external drug feeding pipe 302 and the pre-fabricated drug feeding pipe 301. The input end of the external drug feeding pipe 302 is connected to the preparation tank through an external diaphragm pump, but it is not shown in the figure. It is important to understand that the drug feeding module 3 can transport the drug solution in the external preparation tank to the two pressure tanks 201.

[0035] Please see Figure 3 , Figure 4 and Figure 6 The dosing module 4 includes a prefabricated dosing pipe 401 and an external dosing pipe 402. One end of the external dosing pipe 402 is connected to the output port of the prefabricated dosing pipe 401. Both sides of the prefabricated dosing pipe 401 are equipped with a No. 5 special valve 403 and a dosing valve 404. The outer surface of the external dosing pipe 402 is fixedly connected to the inner wall of the stainless steel shell 1. When both the No. 5 special valve 403 and the dosing valve 404 are in the open state, the liquid medicine in the pressure tank 201 can be transported to the dosing point through the prefabricated dosing pipe 401 and the external dosing pipe 402. In conjunction with the air intake pressure stabilizing module 2, the pressure inside the pressure tank 201 is adjusted so that the liquid medicine can be stably transported to the dosing point through the prefabricated dosing pipe 401 and the external dosing pipe 402.

[0036] Please see Figure 3 , Figure 4 and Figure 5 The overflow and venting mechanism 5 includes an overflow pipe 501 connected to the top of two pressure medicine tanks 201. Each overflow pipe 501 is equipped with a No. 6 special valve 502 and an overflow valve 503. The No. 6 special valve 502 and the overflow valve 503 can be used to easily drain the liquid overflowing from the pressure medicine tank 201 through the overflow pipe 501. Each pressure medicine tank 201 is connected to a venting pipe 504 at the bottom. The bottom ends of the two overflow pipes 501 are respectively connected to the interior of the two venting pipes 504. Each venting pipe 504 is equipped with a No. 7 special valve 505. The outer surfaces of the two venting pipes 504 are respectively fixedly connected to the inner walls on both sides of the stainless steel shell 1. When the No. 7 special valve 505 is opened, the medicine liquid inside the corresponding pressure medicine tank 201 can be vented through the venting pipe 504.

[0037] Please see Figure 1 , Figure 2 and Figure 3The stainless steel casing 1 houses the automatic control box 6. The software within the control box 6 primarily includes a linear positive correlation between the dosing tank pressure P and the dosing flow rate Q, with a correlation coefficient reaching 0.99, as well as operational model calibration and automatic calibration functions. The front of the stainless steel casing 1 is equipped with a touchscreen 7 electrically connected to the control box 6. The touchscreen's operating screen can be equipped with a maintenance door for convenient data transmission and serves for screen maintenance and checking the internal operating conditions of the device. The electrical components inside the air intake pressure stabilizing module 2, the dosing module 3, the dosing module 4, and the overflow venting mechanism 5 are all electrically connected to the control box 6. 1. Support columns 8 are fixedly connected to the four corners of the bottom surface. Each support column 8 has an anti-slip pad or fixing plate on its bottom surface. The support columns 8 can make the device more stable on the contact surface and improve the overall stability. The top of the stainless steel shell 1 is equipped with a detachable cover plate 9. Each cover plate 9 has a groove on its top. The back of the stainless steel shell 1 is equipped with a double door 10. The cover plate 9 can facilitate the staff to perform regular maintenance on the level gauge 204. The double door 10 can facilitate the regular maintenance on the components inside the stainless steel shell 1.

[0038] It should be noted that the model calibration function is used to calibrate by inputting different pressure values. During the dosing process, the corresponding actual dosing flow rate is obtained. The pressure value and the flow rate are fitted to obtain the parameters M and N in the Bernoulli equation running model P=MQ²+N, and the correlation coefficient is verified to meet the requirements. If it exceeds 0.99, the calibration is complete. The input pressure value must be within the allowable range of the working pressure. Five or ten pressure values ​​can be selected, and the process is carried out sequentially from low to high. During the dosing step, the system automatically adjusts the output of the electro-proportional valve 209 to the corresponding pressure value. The dosing time for each pressure value is 30 seconds. The change in the liquid level of the pressure tank 201 within 30 seconds of the current input pressure value is converted into a corresponding actual dosing flow rate value.

[0039] In this embodiment, a one-to-one dosing device for wastewater treatment, through the cooperation of an air inlet pressure stabilizing module 2 and a dosing module 4, can stably add the liquid medicine inside the pressure tank 201 to the dosing point according to the input flow rate by pressurizing. The input end of the external air inlet pipe 208 is connected to an external air source, so that the external air source can be delivered to the pre-pressurized air pipe 205 through the external air inlet pipe 208, and the liquid medicine inside the pressure tank 201 can be appropriately pressurized through the pre-pressurized air pipe 205. The pressure monitoring instrument 202 can monitor the pressure of the liquid medicine in real time. The pressure inside tank 201 is monitored and displayed by pressure gauge 203. The level gauge 204 detects the liquid level inside the pressure tank 201. Then, by opening the No. 5 special valve 403 and the dosing valve 404, the liquid can be stably delivered to the dosing point through the prefabricated dosing pipe 401 and the external dosing pipe 402. This solves the problems mentioned in the background technology. By controlling the pressure, the dosing flow rate is stabilized. By using non-contact metering, the dosing flow rate is accurately monitored, solving the problem of decreased accuracy caused by scaling and corrosion of the flow meter over long-term use.

[0040] The working principle of the above embodiment is as follows: The external inlet pipe 302 is connected to the preparation tank via an external diaphragm pump. Then, the inlet valve 303 and the fourth dedicated valve 304 are opened, and the diaphragm pump is started. The liquid medicine in the preparation tank is then transported to two pressure tanks 201 through the external inlet pipe 302 and the pre-fabricated inlet pipe 301. The liquid level inside the pressure tank 201 can be monitored using the level gauge 204. Once a certain amount of liquid medicine is present in the pressure tank 201, the diaphragm pump is stopped, and the inlet valve 303 and the fourth dedicated valve 304 are closed. Then, the external air inlet pipe 208 is connected to an external air source device. The electric proportional valve 209 is adjusted to control the amount of gas delivered to the pressure tank 201 through the external air inlet pipe 208. Then, the air inlet valve 206, the first dedicated valve 207, the fifth dedicated valve 403, and the... The dosing valve 404 activates the external air source equipment. The external air source can be supplied to the pre-fabricated air pipe 205 through the external air inlet pipe 208, and the gas is then supplied to the pressure tank 201 through both ends of the pre-fabricated air pipe 205. This allows the liquid medicine in the pressure tank 201 to be supplied to the pre-fabricated dosing pipe 401 by pressurization. Finally, the liquid medicine in the two pressure tanks 201 is supplied to the dosing point through the external dosing pipe 402. During the supply of liquid medicine, the pressure monitor 202 can monitor the pressure inside the pressure tank 201 in real time, and the level gauge 204 can monitor the liquid level inside the pressure tank 201 in real time. With the adjustment effect of the electro-proportional valve 209, stable and controllable dosing can be achieved. Stable and controllable dosing can be achieved without the need for a flow meter and dosing pump, solving the problems in the background technology and making it more practical.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A one-to-one dosing device for wastewater treatment, comprising a stainless steel shell (1), an air inlet pressure stabilizing module (2), a dosing module (3), a dosing module (4), and an overflow venting mechanism (5), characterized in that: The air intake pressure stabilizing module (2) includes two pressure tanks (201) fixedly connected inside the stainless steel shell (1). A pressure monitoring instrument (202) is installed on the top of each pressure tank (201), and a level gauge (204) is installed on the top of each pressure tank (201). The detection element of the level gauge (204) is located inside the pressure tank (201). A pre-fabricated air pipe (205) connects the two pressure tanks (201). An air intake valve (206) and a first-purpose valve (207) are installed on both sides of the pre-fabricated air pipe (205). The input end of the device is connected to an external air intake pipe (208). The outer surface of the external air intake pipe (208) is fixedly connected to the inner wall of the stainless steel shell (1). An electric proportional valve (209) and a second special valve (210) are installed on the pipe section of the external air intake pipe (208). An automatic control box (6) is installed inside the stainless steel shell (1). A touch screen (7) electrically connected to the automatic control box (6) is installed on the front of the stainless steel shell (1). The electrical components inside the air intake pressure stabilizing module (2), the drug injection module (3), the drug dosing module (4), and the overflow venting mechanism (5) are all electrically connected to the automatic control box (6).

2. The one-to-one dosing device for wastewater treatment according to claim 1, characterized in that: Each of the pressure tanks (201) is connected to a pressure relief pipe (211) at its top, and each section of the pressure relief pipe (211) is equipped with a No. 3 special valve (212) and a pressure relief valve (203).

3. The one-to-one dosing device for wastewater treatment according to claim 1, characterized in that: The drug feeding module (3) includes a prefabricated drug feeding pipe (301) and an external drug feeding pipe (302). The external drug feeding pipe (302) is connected to the input end of the prefabricated drug feeding pipe (301). The two ends of the prefabricated drug feeding pipe (301) are respectively installed inside two pressure drug tanks (201). Both sides of the prefabricated drug feeding pipe (301) are equipped with a drug feeding valve (303) and a No. 4 special valve (304). The outer surface of the external drug feeding pipe (302) is fixedly connected to the inner wall of the stainless steel shell (1).

4. The one-to-one dosing device for wastewater treatment according to claim 1, characterized in that: The dosing module (4) includes a prefabricated dosing pipe (401) and an external dosing pipe (402). One end of the external dosing pipe (402) is connected to the output port of the prefabricated dosing pipe (401). A No. 5 special valve (403) and a dosing valve (404) are installed on both sides of the prefabricated dosing pipe (401). The outer surface of the external dosing pipe (402) is fixedly connected to the inner wall of the stainless steel shell (1).

5. A one-to-one dosing device for wastewater treatment according to claim 1, characterized in that: The overflow venting mechanism (5) includes an overflow pipe (501) connected to the top of the two pressure tanks (201), and each of the overflow pipes (501) is equipped with a No. 6 special valve (502) and an overflow valve (503).

6. A one-to-one dosing device for wastewater treatment according to claim 5, characterized in that: Each of the pressure tanks (201) is connected to a drain pipe (504) at its bottom. The bottom ends of the two overflow pipes (501) are connected to the interior of the two drain pipes (504) respectively. Each drain pipe (504) is equipped with a No. 7 special valve (505). The outer surfaces of the two drain pipes (504) are fixedly connected to the inner walls on both sides of the stainless steel shell (1).

7. A one-to-one dosing device for wastewater treatment according to claim 1, characterized in that: The stainless steel shell (1) has four corners of the bottom surface of each of the four corners of each of the four corners of the bottom surface ...

8. A one-to-one dosing device for wastewater treatment according to claim 1, characterized in that: The stainless steel shell (1) is equipped with a detachable cover plate (9) on the top, and each cover plate (9) has a groove on the top. The stainless steel shell (1) is equipped with a double door (10) on the back.

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