A medicament feeding device for groundwater remediation treatment

Abstract

The application relates to a medicament feeding device for groundwater remediation treatment, which comprises a treatment tank, a medicament storage container, a necked section, a medicament outlet pipe, a stirring assembly, a first stirring shaft, a material blocking component, a driving assembly, a cylinder, a non-circular ring track, a cylindrical pin, a spline sleeve, a spline, a second bevel gear, a first bevel gear and a driving part. The non-circular ring track guides the cylindrical pin, the first stirring shaft performs lifting and rotating motion, when the material blocking component rises to be separated from the medicament outlet pipe, the medicament in the medicament storage container falls into the treatment tank, the material blocking component seals the medicament outlet pipe when descending, the medicament no longer enters the treatment tank, the stirring assembly performs lifting and rotating motion to stir and dilute the medicament, the medicament is intermittently and slowly added into the groundwater to be treated, the stirring assembly performs lifting and stirring on the medicament, the medicament flows between the upper and lower water layers, the medicament is fully diluted, the medicament is saved, and the water treatment effect is good.

Description

Technical Field

[0001] This invention relates to the field of water pollution control technology, and in particular to a reagent dosing device for groundwater remediation. Background Technology

[0002] Groundwater is a precious freshwater resource for humankind. However, with the continuous development of social industrialization, wastewater discharge, industrial waste residue, agricultural irrigation, landfill leaks, and damage to petrochemical raw material transportation pipelines and storage tanks can all cause groundwater pollution, exacerbating the already severe water shortage problem. Moreover, it poses a serious threat and challenge to human health, food safety, drinking water safety, regional ecological environment, sustainable economic and social development, and even social stability. If it deteriorates further, it will seriously threaten the stability of the ecological environment and human life safety. Groundwater remediation has become an environmental issue that has attracted widespread public and social attention.

[0003] Chemical reduction remediation technology utilizes chemical reducing agents to reduce pollutants in the environment, thereby removing them. It primarily remediates groundwater pollutants sensitive to reduction, such as chromates, nitrates, and some chlorinated reagents. Chemical reduction remediation typically involves adding powdered reagents to the contaminated water. In practice, depending on the extent of groundwater pollution, a number of pumping wells are deployed at the contaminated site. Contaminated groundwater is pumped to surface treatment tanks via pumps and wells. Appropriate oxidizing or reducing powders are added to the treatment tanks to decompose or reduce the pollutants in the water. However, when powdered reagents are added, the surface of the powder quickly absorbs water, forming a gel layer that encapsulates the internal powder, creating a "fish-eye" structure that hinders water penetration. Furthermore, excessively high local reagent concentrations (>0.3%) can promote the formation of physical cross-linking networks between molecular chains, resulting in excessively high solution viscosity (>500 cP). This prevents the effective transfer of stirring energy to the interior, forming an "externally soluble but internally insoluble" colloid, making it difficult to dilute sufficiently, wasting reagents, and resulting in poor water treatment effectiveness. Summary of the Invention

[0004] This invention provides a chemical dosing device for groundwater remediation, which can solve the problem in the prior art that powdered chemicals are difficult to dilute sufficiently when added to the treatment tank, resulting in waste of chemicals and poor water treatment effect.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a reagent dosing device for groundwater remediation, comprising: Processing tank; A drug storage container, comprising an integrally formed constricted section and a drug outlet pipe, the drug outlet pipe being connected to a processing tank; A stirring assembly, the stirring assembly including a first stirring shaft rotatably connected inside the processing tank, the first stirring shaft being provided with a baffle component that is slidably and sealingly connected to the inner wall of the dispensing pipe; A drive assembly includes: a cylinder disposed on a medicine storage container, the cylinder having a non-circular annular track on its inner wall; a cylindrical pin disposed on a first stirring shaft, the cylindrical pin being adapted to the non-circular annular track; a spline sleeve rotatably connected to the medicine storage container; a spline disposed on the first stirring shaft and adapted to the spline sleeve; a second bevel gear disposed on the spline sleeve; a first bevel gear meshing with the second bevel gear; and a drive unit, the output end of the drive unit being fixedly connected to the first bevel gear.

[0006] In practical use, the drive unit drives the second bevel gear to rotate via the first bevel gear, which in turn drives the spline sleeve to rotate. The spline sleeve then drives the first stirring shaft to rotate via the spline. Under the guidance of the cylindrical pin by the non-circular annular track, the first stirring shaft performs a lifting and rotating motion. When the baffle component rises to the point of disengaging from the dispensing pipe, the medicine in the storage container falls into the processing tank. When the baffle component descends, it seals the dispensing pipe, preventing the medicine from entering the processing tank. During the lifting and lowering process, the baffle component scrapes off the medicine adhering to the inner wall of the dispensing pipe, maintaining the unobstructed flow of the dispensing pipe. The lifting and rotating stirring assembly stirs and dilutes the medicine.

[0007] Preferably, it also includes a base; The base is provided with a bracket that is fixedly connected to the medicine storage container. The treatment tank includes a body and an end cap rotatably connected to the upper end of the body. The body is rotatably connected to the base, and the dispensing tube is fixedly connected to the end cap. A baffle is provided on the inner wall of the main body; The stirring assembly further includes a first stirring blade and a scraper fixedly connected to the first stirring blade. The first stirring shaft is disposed on the first stirring shaft, and the scraper is in contact with the inner wall of the body.

[0008] Specifically, the first stirring blade drives the scraper to rotate synchronously during rotation. When the scraper contacts the baffle, it will drive the body to rotate. On the one hand, it causes the agent to fall to different positions in the treatment tank, improving the agent dilution effect. On the other hand, there is a speed difference between the treatment tank and the first stirring blade. The scraper can scrape off the powdered agent adhering to the inner wall of the treatment tank for secondary dilution, further improving the agent dilution effect.

[0009] Preferably, a second stirring shaft is rotatably connected to the middle of the processing tank, the second stirring shaft is drivenly connected to a spline sleeve, and a second stirring blade is provided on the second stirring shaft.

[0010] Specifically, the second bevel gear synchronously drives the third bevel gear to rotate during its rotation. The third bevel gear drives the fifth bevel gear to rotate through the fourth bevel gear. The fifth bevel gear drives the second stirring blade on the second stirring shaft to rotate, stirring the groundwater and creating turbulence in the treatment tank to improve the dilution effect of the agent.

[0011] Preferably, the second bevel gear meshes with a third bevel gear, the third bevel gear meshes with a fourth bevel gear, and the fourth bevel gear meshes with a fifth bevel gear that is coaxially arranged with the second stirring shaft.

[0012] Preferably, the first stirring shaft is provided with an arch-breaking rod located inside the drug storage container.

[0013] Specifically, the anti-bridging rod rises and rotates with the first stirring shaft, breaking up the bridging and rat hole phenomena of powdered agents in the storage container, so that the agent can be discharged smoothly and the groundwater treatment effect can be improved.

[0014] Preferably, the material-stopping component includes a conical upper housing and a base plate that is vertically and elastically connected to the conical upper housing; The first stirring shaft includes a hollow rod fixedly connected to the upper end of the conical upper shell and a solid rod fixedly connected to the bottom plate; The hollow rod is rotatably connected to a worm gear that extends into the conical upper housing. The conical upper housing is rotatably connected to a worm wheel that is connected to the worm gear for transmission. The worm wheel is coaxially provided with a cam.

[0015] Specifically, the feeding speed can be adjusted according to the groundwater treatment requirements. During operation, the worm gear is rotated, which drives the worm wheel to rotate. The worm wheel drives the cam to rotate. By changing the position of the cam, the distance between the conical upper shell and the bottom plate is changed, and it is fixed by the self-locking property of the worm gear. After the adjustment is completed, during the feeding process, when it rises to the high position, the gap between the baffle component and the inner wall of the narrow section of the storage container will change, which will achieve the effect of adjusting the feeding speed.

[0016] Preferably, the treatment tank is equipped with an inlet pipe and an outlet pipe with valves to facilitate the entry of groundwater and the discharge of treated clean water.

[0017] Compared to existing technologies, this invention utilizes a treatment tank, a storage container, a constricted section, a discharge pipe, a stirring assembly, a first stirring shaft, a baffle component, a drive assembly, a cylinder, a non-circular annular track, a cylindrical pin, a spline sleeve, a spline, a second bevel gear, a first bevel gear, and a drive unit in a coordinated configuration. The drive unit drives the second bevel gear to rotate via the first bevel gear, which in turn drives the spline sleeve to rotate. The spline sleeve, in turn, drives the first stirring shaft to rotate via the spline. Guided by the cylindrical pin on the non-circular annular track, the first stirring shaft performs a vertical rotational motion. When the baffle component rises to disengage from the discharge pipe, the medicine in the storage container falls into the treatment tank. When the baffle component descends, it seals the discharge pipe, preventing further medicine from entering the treatment tank. The vertically rotating stirring assembly stirs and dilutes the medicine. The medicine is intermittently and slowly added to the groundwater to be treated. The stirring assembly's vertical stirring of the medicine allows it to flow between the upper and lower water layers, ensuring thorough dilution, saving medicine, and resulting in better water treatment.

[0018] Compared to existing technologies, the inner wall of the dispensing pipe is prone to dampness and drug adhesion, resulting in inaccurate dispensing and even blockage. In this invention, the baffle component scrapes off the drug adhering to the inner wall of the dispensing pipe during the lifting and lowering process, thus maintaining the unobstructed flow of the dispensing pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main cross-sectional structure of the present invention; Figure 2 This is a schematic diagram of the spline sleeve structure of the present invention; Figure 3 This is a schematic diagram of the spline structure of the present invention; Figure 4 This is a schematic diagram of the cylindrical cross-sectional structure of the present invention; Figure 5 This is a cross-sectional view of the material-blocking component of the present invention; Figure 6 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 7 This is a schematic diagram of the main structure of the present invention.

[0020] In the diagram: 1. Base; 2. Narrowing section; 3. Discharge tube; 4. First stirring shaft; 401. Hollow rod; 402. Solid rod; 5. Material blocking component; 501. Conical upper shell; 502. Base plate; 6. Cylinder; 7. Non-circular annular track; 8. Cylindrical pin; 9. Spline; 10. Spline sleeve; 11. Drive unit; 12. Body; 13. End cover; 14. First stirring blade; 15. Scraper; 16. Support; 17. Second stirring shaft; 18. Second stirring blade; 19. Arch breaking rod; 20. First bevel gear; 21. Second bevel gear; 22. Third bevel gear; 23. Fourth bevel gear; 24. Fifth bevel gear; 25. Worm; 26. Worm wheel; 27. Cam; 28. Baffle. Detailed Implementation

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] like Figures 1-7 As shown, a chemical dosing device for groundwater remediation includes: Processing tank; The drug storage container includes an integrally formed constricted section 2 and a drug outlet pipe 3, which is connected to the treatment tank. The stirring assembly includes a first stirring shaft 4 rotatably connected inside the processing tank, and a baffle component 5 is provided on the first stirring shaft 4 that is slidably and sealingly connected to the inner wall of the drug outlet pipe 3. The drive assembly includes: a cylinder 6, which is mounted on the medicine storage container, and a non-circular annular track 7 is provided on the inner wall of the cylinder 6; a cylindrical pin 8, which is mounted on the first stirring shaft 4 and is adapted to the non-circular annular track 7; a spline sleeve 10, which is rotatably connected to the medicine storage container; a spline 9, which is provided on the first stirring shaft 4 and is adapted to the spline sleeve 10; a second bevel gear 21, which is mounted on the spline sleeve 10; a first bevel gear 20, which meshes with the second bevel gear 21; and a drive unit 11, which is a servo motor, and the output end of the drive unit 11 is fixedly connected to the first bevel gear 20.

[0023] In practical use, the drive unit 11 drives the second bevel gear 21 to rotate via the first bevel gear 20. The second bevel gear 21 drives the spline sleeve 10 to rotate. The spline sleeve 10 drives the first stirring shaft 4 to rotate via the spline 9. Under the guidance of the cylindrical pin 8 by the non-circular annular track 7, the first stirring shaft 4 performs a lifting and rotating motion. When the baffle component 5 rises to the point of disengaging from the dispensing pipe 3, the medicine in the storage container falls into the processing tank. When the baffle component 5 descends, it seals the dispensing pipe 3, and the medicine no longer enters the processing tank. During the lifting and lowering process, the baffle component 5 scrapes off the medicine adhering to the inner wall of the dispensing pipe 3, keeping the dispensing pipe 3 unobstructed. The lifting and rotating stirring assembly stirs and dilutes the medicine.

[0024] To improve the effectiveness of groundwater treatment, preferably, a base 1 is also included; The base 1 is provided with a bracket 16 that is fixedly connected to the medicine storage container; The treatment tank includes a body 12 and an end cap 13 rotatably connected to the upper end of the body 12. The body 12 is rotatably connected to the base 1, and the medicine outlet tube 3 is fixedly connected to the end cap 13. A baffle 28 is provided on the inner wall of the main body 12; The stirring assembly also includes a first stirring blade 14 and a scraper 15 fixedly connected to the first stirring blade 14. A first stirring shaft 4 is disposed on the first stirring shaft 4, and the scraper 15 is in contact with the inner wall of the body 12.

[0025] Specifically, the first stirring blade 14 drives the scraper 15 to rotate synchronously during rotation. When the scraper 15 contacts the baffle 28, it will drive the body 12 to rotate. On the one hand, it causes the agent to fall to different positions in the treatment tank, improving the agent dilution effect. On the other hand, there is a speed difference between the treatment tank and the first stirring blade 14. The scraper 15 can scrape off the powdered agent adhering to the inner wall of the treatment tank for secondary dilution, further improving the agent dilution effect.

[0026] In order to improve the groundwater treatment effect, preferably, a second stirring shaft 17 is rotatably connected to the middle of the treatment tank, a second bevel gear 21 meshes with a third bevel gear 22, the third bevel gear 22 meshes with a fourth bevel gear 23, the fourth bevel gear 23 meshes with a fifth bevel gear 24 coaxially arranged with the second stirring shaft 17, and a second stirring blade 18 is provided on the second stirring shaft 17.

[0027] Specifically, the second bevel gear 21 drives the third bevel gear 22 to rotate synchronously during rotation. The third bevel gear 22 drives the fifth bevel gear 24 to rotate through the fourth bevel gear 23. The fifth bevel gear 24 drives the second stirring blade 18 on the second stirring shaft 17 to rotate, stirring the groundwater and creating turbulence in the treatment tank to improve the dilution effect of the agent.

[0028] In order to improve the groundwater treatment effect, preferably, the first stirring shaft 4 is equipped with an arch-breaking rod 19 located inside the drug storage container.

[0029] Specifically, the arch-breaking rod 19 rises and falls with the first stirring shaft 4, breaking up the bridging and rat hole phenomena of powdered agents in the storage container, so that the agent can be discharged smoothly and the groundwater treatment effect can be improved.

[0030] In order to improve the groundwater treatment effect, preferably, the material blocking component 5 includes a conical upper shell 501 and a bottom plate 502 that is vertically and elastically connected to the conical upper shell 501; The first stirring shaft 4 includes a hollow rod 401 fixedly connected to the upper end of the conical upper shell 501 and a solid rod 402 fixedly connected to the bottom plate 502; The hollow rod 401 is rotatably connected to a worm 25 that extends into the conical upper housing 501. The conical upper housing 501 is rotatably connected to a worm wheel 26 that is driven by the worm 25. The worm wheel 26 is coaxially provided with a cam 27.

[0031] Specifically, the feeding speed can be adjusted according to the groundwater treatment requirements. During operation, the worm gear 25 is rotated, which drives the worm wheel 26 to rotate. The worm wheel 26 drives the cam 27 to rotate. By changing the position of the cam 27, the distance between the conical upper shell 501 and the bottom plate 502 is changed, and it is fixed by the self-locking property of the worm wheel and worm gear. After the adjustment is completed, during the feeding process, when it rises to the high position, the gap between the baffle part 5 and the inner wall of the narrow section 2 of the medicine storage container will change, which will achieve the effect of adjusting the feeding speed.

[0032] Preferably, the treatment tank is equipped with an inlet pipe and an outlet pipe with valves to facilitate the entry of groundwater and the discharge of treated clean water.

[0033] Compared to existing technologies, this invention utilizes the coordinated arrangement of a processing tank, a storage container, a constricted section 2, a discharge pipe 3, a stirring assembly, a first stirring shaft 4, a baffle component 5, a drive assembly, a cylinder 6, a non-circular annular track 7, a cylindrical pin 8, a spline sleeve 10, a spline 9, a second bevel gear 21, a first bevel gear 20, and a drive unit 11. The drive unit 11 drives the second bevel gear 21 to rotate via the first bevel gear 20, the second bevel gear 21 drives the spline sleeve 10 to rotate, and the spline sleeve 10 drives the first stirring shaft 4 to rotate via the spline 9. Under the guidance of the circular track 7 and the cylindrical pin 8, the first stirring shaft 4 moves up and down and rotates. When the baffle component 5 rises to the point of disengagement from the discharge pipe 3, the agent in the storage container falls into the treatment tank. When the baffle component 5 descends, it seals the discharge pipe 3, and the agent no longer enters the treatment tank. The up-and-down rotating stirring component stirs and dilutes the agent. The agent is intermittently and slowly added to the groundwater to be treated. The stirring component stirs and drops the agent, causing it to flow between the upper and lower water layers, so that the agent is fully diluted, saving the agent and achieving good water treatment effect.

[0034] Compared to existing technologies, the inner wall of the dispensing pipe 3 is prone to dampness and drug adhesion, resulting in inaccurate dispensing and even blockage. In this invention, the baffle component 5 scrapes off the drug adhering to the inner wall of the dispensing pipe 3 during the lifting and lowering process, thus maintaining the unobstructed flow of the dispensing pipe 3.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reagent dosing device for groundwater remediation, characterized in that, include: Processing tank; A medicine storage container, the medicine storage container includes an integrally formed constricted section (2) and a medicine outlet pipe (3), the medicine outlet pipe (3) being connected to a processing tank; The stirring assembly includes a first stirring shaft (4) rotatably connected inside the processing tank, and a baffle (5) is provided on the first stirring shaft (4) and is slidably and sealingly connected to the inner wall of the drug outlet pipe (3). A drive assembly comprising: a cylinder (6) disposed on a medicine storage container, wherein a non-circular annular track (7) is provided on the inner wall of the cylinder (6); a cylindrical pin (8) disposed on a first stirring shaft (4), wherein the cylindrical pin (8) is adapted to the non-circular annular track (7); a spline sleeve (10) rotatably connected to the medicine storage container; a spline (9) disposed on the first stirring shaft (4) and adapted to the spline sleeve (10); a second bevel gear (21) disposed on the spline sleeve (10); and a first bevel gear (20) meshing with the second bevel gear (21). The drive unit (11) is fixedly connected to the first bevel gear (20) at its output end. It also includes a base (1), on which a bracket (16) is fixedly connected to the medicine storage container. The treatment tank includes a body (12) and an end cap (13) rotatably connected to the upper end of the body (12). The body (12) is rotatably connected to the base (1), and the medicine outlet pipe (3) is fixedly connected to the end cap (13). A baffle (28) is provided on the inner wall of the body (12); The stirring assembly also includes a first stirring blade (14) and a scraper (15) fixedly connected to the first stirring blade (14). The first stirring blade (14) is disposed on the first stirring shaft (4), and the scraper (15) is in contact with the inner wall of the body (12). The baffle component (5) includes a conical upper shell (501) and a base plate (502) that is vertically and elastically connected to the conical upper shell (501). The first stirring shaft (4) includes a hollow rod (401) fixedly connected to the upper end of the conical upper shell (501) and a solid rod (402) fixedly connected to the bottom plate (502). The hollow rod (401) is rotatably connected to a worm (25) that extends into the conical upper housing (501). The conical upper housing (501) is rotatably connected to a worm wheel (26) that is connected to the worm (25) in a transmission. The worm wheel (26) is coaxially provided with a cam (27).

2. The reagent dosing device for groundwater remediation and treatment according to claim 1, characterized in that: The processing tank is rotatably connected to a second stirring shaft (17), which is connected to a spline sleeve (10) for transmission. A second stirring blade (18) is provided on the second stirring shaft (17).

3. The reagent dosing device for groundwater remediation and treatment according to claim 2, characterized in that: The second bevel gear (21) meshes with the third bevel gear (22), the third bevel gear (22) meshes with the fourth bevel gear (23), and the fourth bevel gear (23) meshes with the fifth bevel gear (24) which is coaxially arranged with the second stirring shaft (17).

4. The reagent dosing device for groundwater remediation and treatment according to claim 1, characterized in that: The first stirring shaft (4) is provided with an arch-breaking rod (19) located inside the drug storage container.

5. The reagent dosing device for groundwater remediation and treatment according to claim 1, characterized in that: The treatment tank is equipped with an inlet pipe and an outlet pipe with valves.

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