A sewage treatment agent quantitative dosing device

Abstract

This invention relates to a quantitative dosing device for wastewater treatment chemicals, belonging to the technical field of wastewater treatment equipment. It includes a fixed frame, a tank base fixedly connected to the upper side of the fixed frame, a chemical tank mounted on the upper side of the tank base, a tank cover bolted to the upper side of the chemical tank, a control box fixedly connected to the outer side of the fixed frame, and a coupling fixedly connected to the upper side of the tank cover. A chemical inlet is provided on one side of the coupling, and a cover plate is hinged to the upper side of the chemical inlet. A sealing gasket is installed on the inner wall of the cover plate. An exhaust port is provided on one side of the chemical inlet. A metering pump draws chemical solution from the metering cylinder through the lower discharge pipe. Because the liquid level in the metering cylinder is automatically maintained stable by the float valve, the static pressure at the metering pump inlet is basically constant and unaffected by fluctuations in the chemical tank liquid level. The volume of chemical solution drawn in by the metering pump per stroke tends to be consistent, and the actual dosing amount is closer to the set value, thereby improving the accuracy of quantitative dosing.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to a quantitative dosing device for wastewater treatment agents. Background Technology

[0002] Wastewater treatment chemical dosing devices are mainly used to automatically and quantitatively add flocculants, disinfectants, pH adjusters and other chemical agents to wastewater. They can continuously and accurately add chemicals according to the set flow rate or water quality signal, ensuring stable wastewater treatment results. They are widely used in municipal wastewater treatment plants and industrial wastewater treatment systems.

[0003] In traditional devices, the metering pump is directly connected to the drug storage tank through a pipeline. As the liquid level in the tank decreases during the dosing process, the static pressure at the inlet of the metering pump also decreases. When the liquid level is high, the metering pump draws in sufficient liquid, resulting in a larger actual discharge volume. When the liquid level is low, the pump draws in insufficient liquid, resulting in a smaller actual discharge volume. Under the same stroke setting, the actual dosing amount varies significantly due to different liquid levels, resulting in poor quantitative accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a quantitative dosing device for wastewater treatment agents, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wastewater treatment chemical quantitative dosing device, comprising a fixed frame, a tank base fixedly connected to the upper side of the fixed frame, a chemical tank mounted on the upper side of the tank base, a tank cover bolted to the upper side of the chemical tank, a control box fixedly connected to the outer side of the fixed frame, a coupling fixedly connected to the upper side of the tank cover, a chemical inlet provided on one side of the coupling, a cover plate hinged to the upper side of the chemical inlet, a sealing gasket installed on the inner wall of the cover plate, an exhaust port provided on one side of the chemical inlet, a filter screen installed on the inner wall of the exhaust port, a water inlet provided on one side of the exhaust port, and an external thread machined on the outer wall of the water inlet.

[0006] Preferably, a stirring motor is installed on the upper side of the coupling, a stirring shaft is rotatably connected to the inner side of the tank cover, and the stirring shaft and the coupling are axially connected. An upper guide tube is provided on the outer side of the stirring shaft, and the upper guide tube is fixedly connected to the tank cover. An upper stirring blade is provided on the lower side of the upper guide tube, an annular baffle is provided on the lower side of the upper stirring blade, and the annular baffle is fixedly connected to the medicine tank. A lower stirring blade is provided on the lower side of the annular baffle, and the lower stirring blade is installed in the opposite direction to the upper stirring blade. A lower guide tube is provided on the lower side of the lower stirring blade, and the lower guide tube is fixedly connected to the medicine tank.

[0007] Preferably, a leveling cylinder is provided on the outside of the medicine tank, and the outer wall of the leveling cylinder is transparent. A connecting pipe is connected to the upper side of the leveling cylinder, and the connecting pipe is connected to both the medicine tank and an external medicine tank. A leveling float is installed inside the leveling cylinder. A feed pipe is provided on one side of the leveling cylinder, and a one-way valve is connected in series on the feed pipe. A solenoid valve body is provided on one side of the one-way valve, and the solenoid valve body is connected to the feed pipe. A first movable push rod is slidably connected to the inner side of the solenoid valve body, and a first... The first spring has a movable iron core fixedly connected to its outer side, and the movable iron core is slidably connected to the solenoid valve body. A second movable push rod is installed on the lower side of the first spring, and a second spring is installed on the outer side of the second movable push rod. A piston sealing block is fixedly connected to the bottom end of the second movable push rod, and a stop block is fitted on the lower side of the piston sealing block. The outer diameter of the stop block is adapted to the inner diameter of the internal channel of the solenoid valve body.

[0008] Preferably, the outer wall of the medicine tank is provided with an upper discharge pipe, and an inner conical cover is provided on one side of the upper discharge pipe. The inner conical cover is fixedly connected to the medicine tank. A spiral rectifier is fixedly connected to the outer wall of the inner conical cover, and six sets of spiral rectifiers are evenly distributed along the circumference of the inner conical cover. An outer conical cover is fixedly connected to the outer side of the inner conical cover. Both the inner and outer conical covers have their large ends facing the upper discharge pipe and their small ends facing the medicine tank.

[0009] Preferably, a metering cylinder is connected to one side of the upper discharge pipe, and an air outlet is provided at the top of the metering cylinder. A float valve body is provided inside the metering cylinder, and the float valve body is connected to the upper discharge pipe by a pipe. A movable baffle is slidably connected inside the float valve body. A connecting plate is hinged to one side of the movable baffle, and the connecting plate is hinged to the float valve body. A float rod is fixedly connected to the lower side of the connecting plate. A lower discharge pipe is provided on the outer wall of the metering cylinder, and a metering pump is connected to one side of the lower discharge pipe.

[0010] Preferably, a liquid medicine pipe is connected to one side of the metering pump, and the end of the liquid medicine pipe is closed. A spray hole is opened on the outer wall of the liquid medicine pipe. A guide cone is fixedly connected to one end of the liquid medicine pipe. An injector is fixedly connected to the outside of the liquid medicine pipe. An annular spray chamber is opened between the liquid medicine pipe and the injector. A constricted spray nozzle is installed at one end of the injector.

[0011] Compared with the prior art, the beneficial effects of the present invention are: During the quantitative dosing process, the liquid medicine in the reagent tank continuously enters the metering cylinder through the upper discharge pipe. When the liquid level in the metering cylinder drops, the float rod moves down with the liquid level, driving the movable baffle to slide within the float valve body via the connecting plate. This connects the upper discharge pipe and the float valve body, allowing the liquid medicine to be added to the metering cylinder. When the liquid level rises to the set height, the float rod rises with the liquid level, pushing the movable baffle to reset via the connecting plate, closing the inlet channel and maintaining the liquid level in the metering cylinder near the set height. At the same time, the vent is used to discharge the gas inside the cylinder, ensuring smooth liquid inflow. The metering pump draws liquid medicine from the metering cylinder through the lower discharge pipe. Because the liquid level in the metering cylinder is automatically maintained stable by the float valve body, the static pressure at the metering pump inlet is basically constant and unaffected by fluctuations in the reagent tank liquid level. The volume of liquid medicine drawn in by the metering pump per stroke tends to be consistent, and the actual dosage is closer to the set value, thereby improving the accuracy of quantitative dosing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall front view structure proposed in this invention; Figure 2 This is a schematic diagram of the upper structure of the can lid proposed in this invention; Figure 3 This is a schematic diagram of the internal structure of the medicine container proposed in this invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the liquid level cylinder proposed in this invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the feed pipe proposed in this invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the medicine container proposed in this invention; Figure 7 This is a schematic cross-sectional view of the metering cylinder proposed in this invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the drug liquid tube proposed in this invention.

[0013] In the diagram: 1. Fixed frame; 2. Tank base; 3. Medicine tank; 4. Tank cover; 5. Control box; 6. Coupling; 7. Medicine inlet; 8. Cover plate; 9. Sealing gasket; 10. Exhaust port; 11. Filter screen; 12. Water inlet; 13. Stirring motor; 14. Stirring shaft; 15. Upper guide tube; 16. Upper stirring blade; 17. Annular baffle; 18. Lower stirring blade; 19. Lower guide tube; 20. Liquid level cylinder; 21. Connecting pipe; 22. Liquid level float; 23. Feed pipe; 24. Check valve; 25. Solenoid valve body; 26. First movable push rod; 27. First spring; 28. Electromagnet; 29. ​​Junction box; 30. Movable iron core; 31. Second movable push rod; 32. Second spring; 33. Piston sealing block; 34. Stop block; 35. Upper discharge pipe; 36. Inner conical cover; 37. Spiral rectifier; 38. Outer conical cover; 39. Metering cylinder; 40. Air outlet; 41. Float valve body; 42. Movable stop column; 43. Connecting plate; 44. Float rod; 45. Lower discharge pipe; 46. Metering pump; 47. Liquid pipe; 48. Spray hole; 49. Guide cone; 50. Injector; 51. Annular spray chamber; 52. Contraction spray nozzle. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figure 1-8 As shown, a wastewater treatment chemical quantitative dosing device includes a fixed frame 1, a tank base 2 fixedly connected to the upper side of the fixed frame 1, a chemical tank 3 mounted on the upper side of the tank base 2, a tank cover 4 bolted to the upper side of the chemical tank 3, a control box 5 fixedly connected to the outer side of the fixed frame 1, a coupling 6 fixedly connected to the upper side of the tank cover 4, a chemical inlet 7 provided on one side of the coupling 6, a cover plate 8 hinged to the upper side of the chemical inlet 7, a sealing gasket 9 installed on the inner wall of the cover plate 8, an exhaust port 10 opened on one side of the chemical inlet 7, a filter screen 11 installed on the inner wall of the exhaust port 10, and the exhaust port 10... The device has an inlet 12 on one side, and the outer wall of the inlet 12 is machined with external threads. When the device is running, the cover plate 8 is opened first, and the required medicine is added into the medicine tank 3 through the medicine inlet 7. Then the cover plate 8 is closed, and the sealing gasket 9 ensures the overall sealing. After that, clean water is injected into the medicine tank 3 through the inlet 12. The coupling 6 is connected to the stirring motor 13, which drives the medicine tank 3 to continuously stir, so that the medicine and water are fully mixed. At the same time, the gas in the tank is discharged through the exhaust port 10. The filter screen 11 can prevent external impurities from entering, thereby ensuring the smooth preparation and quantitative addition of medicine.

[0016] Furthermore, a stirring motor 13 is installed on the upper side of the coupling 6, and a stirring shaft 14 is rotatably connected to the inner side of the tank cover 4. The stirring shaft 14 and the coupling 6 are connected by a shaft. An upper guide tube 15 is provided on the outer side of the stirring shaft 14, and the upper guide tube 15 is fixedly connected to the tank cover 4. An upper stirring blade 16 is provided on the lower side of the upper guide tube 15, and an annular baffle 17 is provided on the lower side of the upper stirring blade 16. The annular baffle 17 is fixedly connected to the reagent tank 3, and a lower stirring blade is provided on the lower side of the annular baffle 17. The mixing blade 18 is installed in the opposite direction to the upper mixing blade 16. A lower guide tube 19 is provided on the lower side of the lower mixing blade 18, and the lower guide tube 19 is fixedly connected to the medicine tank 3. After the medicine and water enter the medicine tank 3, the mixing motor 13 drives the mixing shaft 14 to rotate through the coupling 6, which drives the upper mixing blade 16 and the lower mixing blade 18 to rotate synchronously. When the upper mixing blade 16 rotates in the upper guide tube 15, it generates a downward axial thrust, which accelerates the medicine liquid in the upper guide tube 15 and moves it along its interior. The liquid flows downwards and is ejected from the large-diameter outlet at the lower end of the upper guide tube 15, forming a downward jet. Simultaneously, the lower stirring blade 18, rotating within the lower guide tube 19, generates an upward axial thrust, accelerating the liquid within the lower guide tube 19 and causing it to flow upwards along its inner wall, ejecting from the large-diameter outlet at the upper end of the lower guide tube 19, forming an upward jet. The two jets meet in the central region where the annular baffle 17 is located, resulting in collision and shearing. This causes the drug particles in the liquid to be subjected to shearing force, accelerating their dispersion and dissolution. The liquid flow after the collision is forced... The liquid spreads outwards and impacts the annular baffle 17, changing its direction and turning back upwards and downwards to form two circulation loops. In the upper circulation loop, the liquid flows upwards along the inner wall of the reagent tank 3 and returns to the inlet of the upper guide tube 15; in the lower circulation loop, the liquid flows downwards along the inner wall of the reagent tank 3 and returns to the inlet of the lower guide tube 19. The liquid in the entire reagent tank 3 is continuously drawn into the circulation, further enhancing the turbulent mixing inside the reagent tank 3, improving the uniformity of reagent dissolution and the efficiency of dispensing, and is especially suitable for high viscosity or easily agglomerated reagents.

[0017] Furthermore, a leveling cylinder 20 is provided on the outside of the medicine tank 3, and the outer wall of the leveling cylinder 20 is transparent. A connecting pipe 21 is connected to the upper side of the leveling cylinder 20. The connecting pipe 21 is connected to both the medicine tank 3 and external medicine tanks. A leveling float 22 is installed inside the leveling cylinder 20. A feed pipe 23 is provided on one side of the leveling cylinder 20. A one-way valve 24 is connected in series on the feed pipe 23. A solenoid valve body 25 is provided on one side of the one-way valve 24, and the solenoid valve body 25 is connected to the feed pipe 23. A first movable push rod 26 is slidably connected to the inner side of the solenoid valve body 25. A first spring 27 is installed on the lower side of the solenoid valve body 25. An electromagnet 28 is fixedly connected to the outer side of the solenoid valve body 25. A junction box 29 is installed on the outer side of the electromagnet 28 and is connected to an external power source. A movable iron core 30 is provided on the outer side of the first spring 27, and the movable iron core 30 is slidably connected to the solenoid valve body 25. A second movable push rod 31 is installed on the lower side of the first spring 27. A second spring 32 is provided on the outer side of the second movable push rod 31. A piston sealing block 33 is fixedly connected to the bottom end of the second movable push rod 31. A stop block 34 is fitted on the lower side of the piston sealing block 33. The outer diameter of 4 is matched with the inner diameter of the internal channel of the solenoid valve body 25. During the preparation and addition of medicine, the liquid level change in the medicine tank 3 will be synchronously reflected in the liquid level cylinder 20 through the connecting pipe 21. The liquid level float 22 rises and falls with the liquid level. The operator can directly observe the liquid level in the medicine tank 3 through the transparent liquid level cylinder 20. When it is necessary to add the original medicine to the medicine tank 3, the junction box 29 is energized, the electromagnet 28 generates magnetic force, the movable iron core 30 is attracted and drives the first movable push rod 26 to move downward against the force of the first spring 27, thereby pushing the second movable push rod 31 to compress the second spring 32, so that the piston When the sealing block 33 leaves the stop block 34, the internal channel of the solenoid valve body 25 is opened. At this time, the raw material enters the medicine tank 3 through the feed pipe 23 and the one-way valve 24. The one-way valve 24 only allows the liquid to flow in one direction to prevent the liquid from flowing back into the medicine tank 3. After the power is cut off, the first spring 27 and the second spring 32 are reset, pushing the movable iron core 30, the first movable push rod 26, the second movable push rod 31 and the piston sealing block 33 back to their original positions. The piston sealing block 33 re-fits the stop block 34, the internal channel of the solenoid valve body 25 is closed, and the addition of medicine is stopped. This realizes the real-time replenishment of raw materials in the medicine tank 3 and avoids frequent manual operation.

[0018] Furthermore, an upper discharge pipe 35 is provided on the outer wall of the medicine tank 3. An inner conical shroud 36 is provided on one side of the upper discharge pipe 35, and the inner conical shroud 36 is fixedly connected to the medicine tank 3. A spiral rectifier 37 is fixedly connected to the outer wall of the inner conical shroud 36, and six sets of spiral rectifier 37 are evenly distributed along the circumference of the inner conical shroud 36. An outer conical shroud 38 is fixedly connected to the outer side of the inner conical shroud 36. Both the inner conical shroud 36 and the outer conical shroud 38 have their large ends facing the upper discharge pipe 35 and their small ends facing the medicine tank 3. When the medicine tank 3 discharges, the liquid medicine first enters the outer conical shroud from inside the medicine tank 3. The liquid flows from the small end of the inner conical shroud 38 to the large end along the annular channel between the inner and outer conical shrouds 36. During this process, six sets of spiral rectifiers 37 divide the liquid in the annular channel into multiple independent spiral channels, allowing the liquid to flow smoothly along the spiral path in the channel. This eliminates the momentum of the overall rotation of the liquid and prevents the formation of vortices near the upper discharge pipe 35. The rectified liquid flows out from the large end of the inner conical shroud 36 and enters the upper discharge pipe 35. At this time, the liquid flow is stable and free of bubbles, providing a full and stable supply of liquid to the subsequent metering pump 46, ensuring the accuracy of the dosage.

[0019] Furthermore, a metering cylinder 39 is connected to one side of the upper discharge pipe 35. An air outlet 40 is located at the top of the metering cylinder 39. A float valve body 41 is installed inside the metering cylinder 39, and the float valve body 41 is connected to the upper discharge pipe 35 via a pipe. A movable baffle 42 is slidably connected inside the float valve body 41. A connecting plate 43 is hinged to one side of the movable baffle 42, and the connecting plate 43 is hinged to the float valve body 41. A float rod 44 is fixedly connected to the lower side of the connecting plate 43. A lower discharge pipe 45 is located on the outer wall of the metering cylinder 39, and a metering pump 46 is connected to one side of the lower discharge pipe 45. During the metered dosing process, the liquid in the reagent tank 3 continuously enters the metering cylinder 39 through the upper discharge pipe 35. When the liquid level in the metering cylinder 39 drops, the float rod 44 moves down with the liquid level, passing through the connecting plate... 43 drives the movable baffle 42 to slide within the float valve body 41, connecting the upper discharge pipe 35 and the float valve body 41. The liquid medicine is then added into the metering cylinder 39. When the liquid level rises to the set height, the float rod 44 rises with the liquid level and pushes the movable baffle 42 to reset through the connecting plate 43, closing the liquid inlet channel and keeping the liquid level in the metering cylinder 39 near the set height. At the same time, the air outlet 40 is used to discharge the gas in the cylinder, ensuring that the liquid inlet is always smooth. The metering pump 46 draws the liquid medicine from the metering cylinder 39 through the lower discharge pipe 45. Since the liquid level in the metering cylinder 39 is automatically maintained stable by the float valve body 41, the static pressure at the inlet of the metering pump 46 is basically constant and is not affected by the liquid level fluctuation of the drug tank 3. The volume of liquid medicine drawn in by the metering pump 46 per stroke tends to be consistent, and the actual dosage is closer to the set value, thereby improving the accuracy of quantitative dosing.

[0020] Furthermore, a liquid medicine pipe 47 is connected to one side of the metering pump 46, and the end of the liquid medicine pipe 47 is closed. A spray hole 48 is opened on the outer wall of the liquid medicine pipe 47. A guide cone 49 is fixedly connected to one end of the liquid medicine pipe 47. An injector 50 is fixedly connected to the outside of the liquid medicine pipe 47. An annular spray cavity 51 is opened between the liquid medicine pipe 47 and the injector 50. A constricted spray nozzle 52 is installed at one end of the injector 50. After the metering pump 46 delivers a fixed amount of liquid medicine to the end through the liquid medicine pipe 47, since the end of the liquid medicine pipe 47 is closed, the liquid medicine can only be sprayed radially from the spray hole 48 on the outer wall of the liquid medicine pipe 47, forming multiple uniform jets in the annular spray cavity 51. Multiple jets collide and mix within the annular spray chamber 51. Subsequently, the liquid medicine flows downstream along the surface of the guide cone 49. The guide cone 49 eliminates the dead zone behind the closed end of the liquid medicine pipe 47, allowing all the liquid medicine to enter the contraction nozzle 52 of the injector 50. The contraction nozzle 52 accelerates the liquid medicine in the annular spray chamber 51 as the cross-sectional area gradually decreases, eventually spraying out in a uniform high-speed jet state. Since the diameter and number of nozzles 48 are fixed, when the output flow rate of the metering pump 46 is constant, the spray speed of each nozzle 48 is consistent, ensuring that every unit of liquid medicine output by the metering pump 46 can enter the sewage evenly, avoiding excessively high local concentrations caused by concentrated outflow from the pipe opening, and ensuring that the accuracy of quantitative dosing is reflected in the actual dosing process.

[0021] Working principle: First, open the cover plate 8 and add the required medicine into the medicine tank 3 through the medicine inlet 7. At the same time, inject clean water through the water inlet 12. Then, start the stirring motor 13, which drives the stirring shaft 14 to rotate through the coupling 6. The upper stirring blade 16 generates a downward thrust in the upper guide tube 15, which accelerates the flow of the medicine downward along the inner wall of the upper guide tube 15 and sprays it downward. The lower stirring blade 18 generates an upward thrust in the lower guide tube 19, which accelerates the flow of the medicine upward along the inner wall of the lower guide tube 19 and sprays it upward. The two jets meet and collide at the annular baffle 17, which accelerates the dispersion and dissolution of the medicine particles and makes the medicine in the entire medicine tank 3 continuously tumble, improving the uniformity of the medicine preparation.

[0022] During the dosing process, the liquid level change in the drug tank 3 is synchronously reflected in the liquid level cylinder 20 through the connecting pipe 21. The operator can directly observe the liquid level through the rise and fall of the liquid level float 22. When it is necessary to add raw medicine to the drug tank 3, the junction box 29 is energized, and the electromagnet 28 generates magnetic force to attract the movable iron core 30. The movable iron core 30 drives the first movable push rod 26 to move downward against the force of the first spring 27, which in turn pushes the second movable push rod 31 to compress the second spring 32, causing the piston sealing block 33 to leave the stop block 34. The internal channel of the solenoid valve body 25 is opened, and the raw medicine enters the drug tank 3 through the feed pipe 23 and the one-way valve 24, thereby maintaining the stable concentration of the drug solution in the drug tank 3.

[0023] When the liquid medicine flows out of the medicine tank 3, it first enters the small end opening of the outer conical cover 38, and flows towards the large end along the annular channel between the inner conical cover 36 and the outer conical cover 38. The liquid medicine is divided into multiple independent flow channels by the spiral rectifier 37. After rectification, the liquid medicine flows out from the large end of the inner conical cover 36 and enters the upper discharge pipe 35, ensuring that the liquid medicine entering the metering pump 46 is full and free of air bubbles.

[0024] The liquid medicine continuously enters the metering cylinder 39 through the upper discharge pipe 35. When the liquid level in the metering cylinder 39 drops, the float rod 44 moves down with the liquid level, and drives the movable baffle 42 to slide inside the float valve body 41 through the connecting plate 43, so that the liquid inlet of the upper discharge pipe 35 opens and the liquid medicine is added into the metering cylinder 39. When the liquid level rises to the set height, the float rod 44 floats up, and pushes the movable baffle 42 to close the liquid inlet through the connecting plate 43, so that the liquid level in the metering cylinder 39 is maintained near the set height. The metering pump 46 draws the liquid medicine from the metering cylinder 39 through the lower discharge pipe 45. Since the liquid level in the metering cylinder 39 is automatically maintained stable by the float valve body 41, the static pressure at the inlet of the metering pump 46 is basically constant, and the volume of liquid medicine drawn in each stroke tends to be consistent, thereby improving the accuracy of quantitative dosing.

[0025] Finally, the metered liquid output by the metering pump 46 enters the liquid pipe 47. The liquid is then radially ejected from the nozzle 48 on the outer wall of the liquid pipe 47, forming multiple uniform jets within the annular spray chamber 51. Subsequently, the liquid flows along the surface of the guide cone 49, allowing all the liquid to enter the constricted spray port 52. The constricted spray port 52 accelerates the liquid as its cross-sectional area gradually decreases, ultimately ejecting it in a uniform high-speed jet state. This ensures that each unit of liquid is evenly distributed into the wastewater, avoiding excessively high local concentrations and achieving precise dosing.

[0026] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0027] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A wastewater treatment agent quantitative dosing device, comprising a fixed frame (1), characterized in that, A tank base (2) is fixedly connected to the upper side of the fixed frame (1). A medicine tank (3) is installed on the upper side of the tank base (2). A tank cover (4) is bolted to the upper side of the medicine tank (3). A control box (5) is fixedly connected to the outer side of the fixed frame (1). A coupling (6) is fixedly connected to the upper side of the tank cover (4). A medicine inlet (7) is provided on one side of the coupling (6). A cover plate (8) is hinged to the upper side of the medicine inlet (7). A sealing gasket (9) is installed on the inner wall of the cover plate (8). An exhaust port (10) is opened on one side of the medicine inlet (7). A filter screen (11) is installed on the inner wall of the exhaust port (10). A water inlet (12) is opened on one side of the exhaust port (10), and the outer wall of the water inlet (12) is machined with external threads.

2. The wastewater treatment reagent quantitative dosing device according to claim 1, characterized in that, A stirring motor (13) is installed on the upper side of the coupling (6). A stirring shaft (14) is rotatably connected to the inner side of the tank cover (4). The stirring shaft (14) and the coupling (6) are connected by a shaft. An upper guide tube (15) is provided on the outer side of the stirring shaft (14). The upper guide tube (15) and the tank cover (4) are fixedly connected. An upper stirring blade (16) is provided on the lower side of the upper guide tube (15). An annular baffle (17) is provided on the lower side of the upper stirring blade (16). The annular baffle (17) and the medicine tank (3) are fixedly connected. A lower stirring blade (18) is provided on the lower side of the annular baffle (17). The lower stirring blade (18) and the upper stirring blade (16) are installed in opposite directions. A lower guide tube (19) is provided on the lower side of the lower stirring blade (18). The lower guide tube (19) and the medicine tank (3) are fixedly connected.

3. The wastewater treatment reagent quantitative dosing device according to claim 1, characterized in that, A liquid level cylinder (20) is provided on the outside of the medicine tank (3), and the outer wall of the liquid level cylinder (20) is transparent. A connecting pipe (21) is connected to the upper pipe of the liquid level cylinder (20). The connecting pipe (21) is connected to both the medicine tank (3) and the external medicine tank. A liquid level float (22) is installed inside the liquid level cylinder (20). A feed pipe (23) is provided on one side of the liquid level cylinder (20). A one-way valve (24) is connected in series on the feed pipe (23). An electromagnetic valve body (25) is provided on one side of the one-way valve (24), and the electromagnetic valve body (25) is connected to the feed pipe (23) by a pipe. A first movable push rod (26) is slidably connected to the inner side of the electromagnetic valve body (25). A first spring is installed on the lower side of the first movable push rod (26). 27) An electromagnet (28) is fixedly connected to the outside of the solenoid valve body (25). A junction box (29) is installed on the outside of the electromagnet (28) and the junction box (29) is connected to an external power source. A movable iron core (30) is provided on the outside of the first spring (27) and the movable iron core (30) is slidably connected to the solenoid valve body (25). A second movable push rod (31) is installed on the lower side of the first spring (27). A second spring (32) is provided on the outside of the second movable push rod (31). A piston sealing block (33) is fixedly connected to the bottom end of the second movable push rod (31). A stop block (34) is fitted on the lower side of the piston sealing block (33) and the outer diameter of the stop block (34) is adapted to the inner diameter of the internal channel of the solenoid valve body (25).

4. The wastewater treatment reagent quantitative dosing device according to claim 1, characterized in that, The outer wall of the medicine tank (3) is provided with an upper discharge pipe (35). An inner conical cover (36) is provided on one side of the upper discharge pipe (35), and the inner conical cover (36) is fixedly connected to the medicine tank (3). A spiral rectifier (37) is fixedly connected to the outer wall of the inner conical cover (36), and six sets of spiral rectifiers (37) are evenly distributed along the circumference of the inner conical cover (36). An outer conical cover (38) is fixedly connected to the outer side of the inner conical cover (36). Both the inner conical cover (36) and the outer conical cover (38) have their large end openings facing the upper discharge pipe (35) and their small end openings facing the medicine tank (3).

5. A wastewater treatment reagent quantitative dosing device according to claim 4, characterized in that, A metering cylinder (39) is connected to one side of the upper discharge pipe (35). An air outlet (40) is provided at the top of the metering cylinder (39). A float valve body (41) is provided inside the metering cylinder (39), and the float valve body (41) is connected to the upper discharge pipe (35) by a pipe. A movable baffle (42) is slidably connected inside the float valve body (41). A connecting plate (43) is hinged to one side of the movable baffle (42), and the connecting plate (43) is hinged to the float valve body (41). A float rod (44) is fixedly connected to the lower side of the connecting plate (43). A lower discharge pipe (45) is provided on the outer wall of the metering cylinder (39), and a metering pump (46) is connected to one side of the lower discharge pipe (45).

6. The wastewater treatment reagent quantitative dosing device according to claim 5, characterized in that, The metering pump (46) has a drug pipe (47) connected to one side of the pipe, and the end of the drug pipe (47) is closed. The outer wall of the drug pipe (47) is provided with a spray hole (48). One end of the drug pipe (47) is fixedly connected with a guide cone (49). The outside of the drug pipe (47) is fixedly connected with a sprayer (50). An annular spray chamber (51) is provided between the drug pipe (47) and the sprayer (50). One end of the sprayer (50) is equipped with a constricted spray nozzle (52).

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