A chemical dosing device for groundwater remediation

Abstract

The present invention discloses a chemical agent dispensing device for groundwater remediation, comprising: an outer cylinder for drilling, a medicine storage device for storing chemicals is arranged inside the outer cylinder, a medicine injection cylinder for mixing the chemicals with water is slidably inserted into the outer cylinder, a drainage device for introducing part of the groundwater into the medicine injection cylinder is arranged inside the outer cylinder, and a medicine discharging device for discharging the chemicals in the medicine injection cylinder into the groundwater is arranged on the medicine injection cylinder; in the present invention, the rotating blades in the medicine discharging device automatically adjust the rotation speed of the screw rod according to the groundwater flow rate, so as to realize the automatic adjustment of the discharging speed of the chemicals in the medicine injection cylinder into the groundwater. When the groundwater flow rate is fast, the discharging speed of the chemicals is increased; when the flow rate is slow, the discharging speed of the chemicals is decreased, so that the chemical agent dosage precisely matches the actual situation of the groundwater, significantly improving the utilization efficiency of the chemical agent and the remediation effect. Moreover, its structure is mainly composed of a screw rod, rotating blades, etc., and it works relying on the groundwater flow and mechanical transmission, reducing the probability of failure and the maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of groundwater treatment, and specifically to a chemical dosing device for groundwater remediation and treatment. Background Art

[0002] Groundwater remediation and treatment refers to the process of using various technologies and methods to improve and restore the water quality of contaminated groundwater. Chemical dosing means that when groundwater is contaminated, a chemical with a remediation function is introduced into the groundwater through specific methods and equipment, so that it undergoes physical, chemical, or biological reactions with pollutants, thereby achieving the purpose of degrading, transforming, and removing pollutants and restoring the water quality of groundwater.

[0003] A Chinese patent with the publication number CN116553653B discloses a chemical dosing device for groundwater remediation. Its structure includes a dosing pipe, an auxiliary pipe, an adjustment component, and a connecting rod. Inside the dosing pipe, a number of dosing chambers are evenly arranged from top to bottom. A connecting ring is provided below the dosing chamber, and a sealing film is provided on the connecting ring. The auxiliary pipe is arranged vertically parallel to the dosing pipe, and the dosing chamber is connected to the auxiliary pipe in a through manner. The adjustment component is slidably connected inside the auxiliary pipe, and the upper end of the adjustment component is threadedly connected to the connecting rod. By introducing air into the auxiliary pipe through an air pipe, the sealing film at the bottommost part ruptures under the action of pressure, realizing the release of the chemical. It is convenient and fast to use, can effectively control the dosing speed of the chemical, prevent the chemical from being invalidated by soaking in water, realize the quantitative release of the chemical, reduce the frequency of manual chemical addition, and improve the dosing efficiency.

[0004] However, the above-mentioned prior art has the following deficiencies: During use, although the quantitative release of the chemical is achieved and excessive one-time dosing is avoided, the interval between each chemical dosing needs to be set manually. In this case, the manually set interval is extremely likely to be too long due to personnel negligence or work arrangement conflicts, resulting in the concentration of the chemical in the groundwater not being able to be maintained at an effective level for degrading pollutants in a timely manner, slowing down the pollutant degradation process, and seriously affecting the remediation efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a chemical dosing device for groundwater remediation and treatment to solve the problem that during use, although the quantitative release of the chemical is achieved and excessive one-time dosing is avoided, the interval between each chemical dosing needs to be set manually. In this case, the manually set interval is extremely likely to be too long due to personnel negligence or work arrangement conflicts, resulting in the concentration of the chemical in the groundwater not being able to be maintained at an effective level for degrading pollutants in a timely manner, slowing down the pollutant degradation process, and seriously affecting the remediation efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions: A chemical agent dispensing device for groundwater remediation and treatment, comprising: an outer cylinder for drilling, a medicine storage device for storing chemicals is arranged inside the outer cylinder, a medicine injection cylinder for mixing chemicals with water is slidably inserted into the outer cylinder, a drainage device for introducing a part of groundwater into the medicine injection cylinder is arranged inside the outer cylinder, and a medicine discharging device for discharging the chemicals in the medicine injection cylinder into the groundwater is arranged on the medicine injection cylinder;

[0007] The drainage device includes a cone head rotatably connected to the bottom end of the medicine injection cylinder;

[0008] The medicine discharging device includes a screw rod arranged inside the medicine injection cylinder and rotatably connected to the medicine injection cylinder, and one end of the screw rod penetrates through the medicine injection cylinder and is fixedly connected to the cone head. A rotating blade is fixedly connected to the cone head. The bottom end of the medicine injection cylinder is connected with a medicine injection pipe in a through manner. An installation ring one is fixedly connected to the inner wall of the medicine injection pipe. A medicine discharging cylinder is slidably inserted into the medicine injection pipe, and the medicine discharging cylinder is slidably inserted with the installation ring one. Medicine discharging holes are formed in a penetrating manner on the outer side of the medicine discharging cylinder. An installation ring two is fixedly connected to the end face of the medicine discharging cylinder. One end of a spring one is fixedly connected to the installation ring two, and one end of the spring one is fixedly connected to the installation ring one;

[0009] Wherein, when the cone head detaches from the outer cylinder and falls into the groundwater, with the flow of the groundwater, the rotating blade is pushed, thereby driving the screw rod to start rotating. Under the thrust generated by the spiral blades on the surface of the screw rod, the chemicals in the medicine injection cylinder are pushed downward and enter the medicine injection pipe. As the chemicals in the medicine injection pipe continuously increase, the generated pressure pushes the medicine discharging cylinder to move outward, and at the same time, the spring one is stretched until the medicine discharging holes move out of the medicine injection pipe. At this time, the chemicals flow into the groundwater from the medicine discharging holes.

[0010] As a further scheme of the present invention: The drainage device further includes an installation groove one, an installation groove two and an installation groove three formed on the inner wall of the outer cylinder, and the installation groove one is arranged above the installation groove two, and the installation groove three is respectively communicated with the installation groove one and the installation groove two.

[0011] As a further scheme of the present invention: A squeezing part is slidably inserted into the installation groove one, and one end of the squeezing part is slidably inserted into the top end of the installation groove three. One end of the squeezing part is fixedly connected with a spring two, and one end of the spring two is fixedly connected with the inner wall of the installation groove one.

[0012] As a further scheme of the present invention: A limiting part is slidably inserted into the installation groove two, and one end of the limiting part is slidably inserted into the bottom end of the installation groove three. One end of the limiting part is fixedly connected with a spring three, and one end of the spring three is fixedly connected with the inner wall of the installation groove two. A ball is slidably connected in the installation groove three.

[0013] As a further solution of the present invention: a limiting groove is provided on the outer side of the medicine injection cylinder, the limiting groove is adapted to the limiting member, a first water-absorbing layer is fixedly connected to the outer side of the medicine injection cylinder, a second water-absorbing layer is fixedly connected to the bottom end of the medicine injection cylinder, and the bottom end of the first water-absorbing layer abuts against the top end of the second water-absorbing layer.

[0014] As a further solution of the present invention: a third water-absorbing layer is fixedly connected inside the conical head, the top end of the third water-absorbing layer abuts against the bottom end of the second water-absorbing layer, and a water-absorbing groove is provided through the bottom end of the conical head.

[0015] As a further solution of the present invention: the medicine storage device includes a medicine storage cylinder slidably inserted into the inner wall of the outer cylinder, a baffle is rotatably connected to the inner wall of the medicine storage cylinder, a guide rod is fixedly connected to the top end of the baffle, and a sealing cover is slidably connected to the outer side of the guide rod.

[0016] As a further solution of the present invention: a top block is fixedly connected to the top end of the screw rod, the top block abuts against the bottom end of the sealing cover, and a support plate is fixedly connected to the top end of the medicine injection cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In the present invention, through the effective filtration of the water-absorbing layer in the drainage device for the sediment in the water, it avoids the sediment from entering the medicine injection cylinder and the medicine discharging device, ensures the stable operation of the device, and greatly extends the service life. By the water absorption of the water-absorbing layer, the weight of the medicine injection cylinder is increased, and the limiting member is automatically triggered to move, realizing the automatic control of the medicine injection cylinder to fall and contact the groundwater. There is no need for additional power equipment and complex control systems, which simplifies the structure, reduces costs, and improves reliability and practicality. Through the extrusion of the extrusion member on the first water-absorbing layer, the absorbed water is stably transported to the medicine injection cylinder, providing necessary moisture for the dissolution of the medicine, ensuring the full dissolution of the medicine, and facilitating the subsequent uniform delivery.

[0019] 2. In the present invention, through the rotating blades in the medicine discharging device automatically adjusting the rotation speed of the screw rod according to the groundwater flow rate, it realizes the automatic adjustment of the speed of discharging the medicine in the medicine injection cylinder into the groundwater. When the groundwater flow rate is fast, the medicine discharging speed is accelerated; when the flow rate is slow, the medicine discharging speed is reduced, making the dosage of the medicine accurately fit the actual situation of the groundwater, significantly improving the utilization efficiency of the medicine and the repair effect. And its structure is mainly composed of a screw rod, rotating blades, etc., and it works relying on the groundwater flow and mechanical transmission, reducing the probability of failure and the maintenance cost.

[0020] 3. In the present invention, through the screw rod driving the top block in the medicine storage device to rotate, it realizes the automatic delivery of the medicine powder in the medicine storage cylinder, without manual operation, saving manpower and greatly improving work efficiency. Through the tight insertion of the sealing cover and the baffle, when the medicine storage cylinder is inverted and placed in the outer cylinder, it effectively prevents the leakage of the medicine powder, avoids the waste of the medicine powder, maintains the cleanliness inside the device, and prevents the leakage of the medicine powder from affecting the normal operation of other components. Brief Description of the Drawings

[0021] Figure 1 is a schematic diagram of the overall structure of a chemical agent dosing device for groundwater remediation and treatment according to the present invention;

[0022] Figure 2 is a cross-sectional view of the overall structure of a chemical agent dosing device for groundwater remediation and treatment according to the present invention;

[0023] Figure 3 is a cross-sectional view of the chemical agent injection state of a chemical agent dosing device for groundwater remediation and treatment according to the present invention;

[0024] Figure 4 is a schematic diagram of the structure of a diversion device in a chemical agent dosing device for groundwater remediation and treatment according to the present invention;

[0025] Figure 5 is a chemical agent dosing device for groundwater remediation and treatment according to the present invention Figure 3 schematic diagram of the structure at position A;

[0026] Figure 6 is a cross-sectional view of the structure of an injection cylinder in a chemical agent dosing device for groundwater remediation and treatment according to the present invention;

[0027] Figure 7 is a bottom view schematic diagram of a conical head in a chemical agent dosing device for groundwater remediation and treatment according to the present invention;

[0028] Figure 8 is a schematic diagram of the structure of a medicine discharging device in a chemical agent dosing device for groundwater remediation and treatment according to the present invention;

[0029] Figure 9 is a chemical agent dosing device for groundwater remediation and treatment according to the present invention Figure 8 schematic diagram of the structure at position B;

[0030] Figure 10 is a schematic diagram of the structure of a chemical agent storage device in a chemical agent dosing device for groundwater remediation and treatment according to the present invention;

[0031] Figure 11 is a bottom view schematic diagram of a chemical agent storage device in a chemical agent dosing device for groundwater remediation and treatment according to the present invention.

[0032] In the figure: 1. Outer cylinder; 2. Medicine injection cylinder; 3. Drainage device; 31. First installation groove; 32. Second installation groove; 33. Third installation groove; 34. Extrusion part; 35. Limiting part; 36. Ball; 37. Second spring; 38. Third spring; 39. Limiting groove; 310. First water absorption layer; 311. Second water absorption layer; 312. Tapered head; 313. Third water absorption layer; 314. Water absorption tank; 4. Medicine discharging device; 41. Screw rod; 42. Rotating blade; 43. Medicine injection pipe; 44. Medicine discharging cylinder; 45. Medicine discharging hole; 46. Second installation ring; 47. First spring; 48. First installation ring; 5. Medicine storage device; 51. Medicine storage cylinder; 52. Baffle; 53. Guide rod; 54. Sealing cover; 55. Top block; 56. Support plate. Detailed implementation manners

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", and "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The following will describe the embodiments according to the overall structure of the present invention.

[0035] Refer to Figures 1 to 3, in an embodiment of the present invention, a chemical dosing device for groundwater remediation and treatment includes: an outer cylinder 1 for drilling, which is composed of a straight rod, a spiral blade, and a conical head. A flange is provided at the top of the straight rod, and the bottom end of the straight rod is fixedly connected to the conical head. The spiral blade is spirally wound around the outside of the straight rod. A medicine storage device 5 for storing and automatically discharging powdered chemicals is arranged inside the outer cylinder 1. A medicine injection cylinder 2 for mixing the powdered chemicals with water is slidably inserted into the outer cylinder 1, and the medicine storage device 5 is arranged above the medicine injection cylinder 2. A diversion device 3 for introducing part of the groundwater into the medicine injection cylinder 2 and filtering the sediment in the water is arranged inside the outer cylinder 1. A medicine discharging device 4 for automatically changing the discharging speed of the chemicals in the medicine injection cylinder 2 into the groundwater according to the groundwater flow rate is arranged on the medicine injection cylinder 2;

[0036] Refer to Figures 4 to 7, the drainage device 3 includes a conical head 312 rotatably connected to the bottom end of the medicine injection cylinder 2. The drainage device 3 further includes a first installation groove 31, a second installation groove 32, and a third installation groove 33 formed in the inner wall of the outer cylinder 1. The first installation groove 31 is arranged above the second installation groove 32. The third installation groove 33 is respectively connected to the first installation groove 31 and the second installation groove 32 in a through manner. The first installation groove 31 and the second installation groove 32 are C-shaped arcs, and the third installation groove 33 is U-shaped. There are four groups of the first installation groove 31, the second installation groove 32, and the third installation groove 33, which are evenly distributed on the inner wall of the outer cylinder 1. A pressing member 34 is slidably inserted into the first installation groove 31. The pressing member 34 is composed of a group of arc-shaped plates with a triangular cross-section, a group of straight plates, and a group of abutting plates. The arc-shaped plate and the abutting plate are symmetrically distributed at both ends of the straight plate. The abutting plate in the pressing member 34 is slidably inserted into the top end of the third installation groove 33. One end of the pressing member 34 is fixedly connected to a second spring 37. One end of the second spring 37 is fixedly connected to the inner wall of the first installation groove 31. There are two groups of the second spring 37, which are symmetrically distributed on both sides of the straight plate. A limiting member 35 is slidably inserted into the second installation groove 32. The limiting member 35 is composed of a group of arc-shaped plates, a group of straight plates, and a group of abutting plates. One side of the top end of the arc-shaped plate is an arc surface. The arc-shaped plate and the abutting plate are symmetrically distributed at both ends of the straight plate. The abutting plate in the limiting member 35 is slidably inserted into the bottom end of the third installation groove 33. One end of the limiting member 35 is fixedly connected to a third spring 38. One end of the third spring 38 is fixedly connected to the inner wall of the second installation groove 32. There are two groups of the third spring 38, which are symmetrically distributed on both sides of the straight plate. A plurality of balls 36 are slidably connected in the third installation groove 33. There are multiple groups of the balls 36, which are evenly distributed in the third installation groove 33, and the multiple groups of balls 36 are in contact with each other. Two of the balls 36 are respectively in contact with the abutting plates in the pressing member 34 and the limiting member 35. A limiting groove 39 is formed on the outer side of the medicine injection cylinder 2. The top end of the limiting groove 39 is an arc surface. The limiting groove 39 is adapted to the limiting member 35. A first water-absorbing layer 310 is fixedly connected to the outer side of the medicine injection cylinder 2. There are four groups of the first water-absorbing layer 310, which are evenly distributed on the outer side of the medicine injection cylinder 2. Two limiting plates are arranged at the top end of each group of the first water-absorbing layer 310. The distance between the two limiting plates is smaller than the length of the arc-shaped plate in the pressing member 34. A second water-absorbing layer 311 is fixedly connected to the bottom end of the medicine injection cylinder 2. The bottom ends of the four groups of the first water-absorbing layer 310 are in contact with the top end of the second water-absorbing layer 311. A third water-absorbing layer 313 is fixedly connected inside the conical head 312. The top end of the third water-absorbing layer 313 is in contact with the bottom end of the second water-absorbing layer 311. A water-absorbing groove 314 is formed through the bottom end of the conical head 312. The abutting plates in the pressing member 34 and the limiting member 35 have the same size. The width and height of the third installation groove 33 are the same as the size of the abutting plate. The arc lengths of the first installation groove 31 and the second installation groove 32 are greater than the width of the third installation groove 33. The height of the first installation groove 31 and the second installation groove 32 is the same as the size of the abutting plate. The first water-absorbing layer 310, the second water-absorbing layer 311, and the third water-absorbing layer 313 are hydrophilic soft materials. Water molecules have the characteristic of thermal motion and will diffuse from a high-concentration area to a low-concentration area. After the bottom water-absorbing layer absorbs water, the concentration of water molecules is relatively high, while the concentration of water molecules in the upper water-absorbing layer is relatively low.Therefore, water molecules will move from the bottom water absorption layer to the upper water absorption layer through diffusion to achieve water transfer. When the conical head in the outer cylinder 1 comes into contact with the groundwater, the groundwater enters the third water absorption layer 313 through the water absorption groove 314 opened at the bottom of the conical head 312. At this time, water molecules will move from the third water absorption layer 313 to the second water absorption layer 311 and the first water absorption layer 310 through diffusion. Eventually, the first water absorption layer 310, the second water absorption layer 311, and the third water absorption layer 313 are all filled with water. As the water absorption layer is filled with water, the weight of the medicine injection cylinder 2 increases, and the abutting force received by the limiting member 35 inserted into the limiting groove 39 on the outside of the medicine injection cylinder 2 increases. Under the action of the limiting groove 39 and the arc surface of the limiting member 35, the limiting member 35 moves into the third installation groove 33, causing the third spring 38 to contract under force. When the limiting member 35 completely exits the limiting groove 39, the restriction on the medicine injection cylinder 2 is released, and the medicine injection cylinder 2 begins to slide down due to gravity. During the movement of the limiting member 35, the ball 36 in the third installation groove 33 is pushed to move synchronously, and the ball 36 in turn pushes the extrusion member 34 to move towards the first water absorption layer 310 until the edge of the arc-shaped plate with a triangular cross-section in the extrusion member 34 squeezes the first water absorption layer 310. During the process of the medicine injection cylinder 2 sliding down due to gravity, the extrusion member 34 maintains its current position and scrapes the water in the first water absorption layer 310 upward. When the extrusion member 34 abuts against the limiting plate at the top of the first water absorption layer 310, the water scraped and lifted flows into the medicine injection cylinder 2 through the gaps between the four support plates 56.,

[0037] Adopting the above solution: The water absorption layer can filter the sediment in the water during the water absorption process, preventing the sediment from entering the medicine injection cylinder 2 and the medicine discharging device 4, avoiding the blockage of components by sediment, ensuring the normal operation of the device and the stability of medicine delivery, extending the service life of the device. The increase in the weight of the medicine injection cylinder 2 due to water absorption by the water absorption layer triggers the movement of the limiting member 35, releasing the restriction on the medicine injection cylinder 2, and realizing the automatic control of the medicine injection cylinder 2 falling to contact the groundwater. This automatic triggering mechanism does not require additional power equipment and complex control systems, simplifies the structure of the device, reduces costs, and improves the reliability and practicability of the device at the same time. The extrusion effect of the extrusion member 34 on the first water absorption layer 310 can effectively transport the filled water into the medicine injection cylinder 2, providing the necessary moisture for the dissolution of the medicine. Moreover, the transportation of water in this mechanical extrusion method ensures the stability and operability of water transportation, enabling the medicine to be fully dissolved in the medicine injection cylinder 2, which is beneficial to the subsequent uniform delivery of the medicine.

[0038] Refer to Figures 8 to 9, the medicine discharging device 4 includes a screw rod 41 disposed in the medicine injection cylinder 2 and rotatably connected to the medicine injection cylinder 2. The screw rod 41 is composed of a set of straight rods and spiral blades wound around the outer side of the straight rods. The spiral blades in the screw rod 41 abut against the inner wall of the medicine injection cylinder 2, and one end of the screw rod 41 penetrates through the medicine injection cylinder 2 and is fixedly connected to the conical head 312. A rotating blade 42 is fixedly connected to the conical head 312. A plurality of groups of rotating blades 42 are provided and are evenly distributed on the outer side of the conical head 312. The rotating blade 42 is spiral-shaped. The rotating blade 42 is inserted into the conical head in the outer cylinder 1, and the bottom surface of the rotating blade 42 is flush with the bottom surface of the conical head in the outer cylinder 1. Four groups of medicine injection pipes 43 are connected to the bottom end of the medicine injection cylinder 2 in a penetrating manner. The medicine injection pipes 43 are symmetrically distributed at the bottom end of the medicine injection cylinder 2. The medicine injection pipe 43 is L-shaped. One end thereof penetrates through the bottom end of the medicine injection cylinder 2 and is flush with the inner bottom end of the medicine injection cylinder 2, and the other end penetrates through the side wall of the medicine injection cylinder 2 and is flush with the side wall of the medicine injection cylinder 2. An installation ring 48 is fixedly connected to the inner wall of the medicine injection pipe 43. A medicine discharging cylinder 44 is slidably inserted into the medicine injection pipe 43. The medicine discharging cylinder 44 is convex-shaped, and the thinner end of the medicine discharging cylinder 44 is slidably inserted into the installation ring 48. Medicine discharging holes 45 are formed through the outer side of the medicine discharging cylinder 44. Four groups of medicine discharging holes 45 are provided and are symmetrically distributed on the outer side of the medicine discharging cylinder 44. An installation ring 46 is fixedly connected to the end surface of the medicine discharging cylinder 44. One end of the installation ring 46 is fixedly connected to a first spring 47. One end of the first spring 47 is fixedly connected to the installation ring 48. A plurality of groups of first springs 47 are provided and are evenly distributed between the installation ring 46 and the installation ring 48. With the flow of groundwater, the rotating blades 42 that are spiral-shaped and evenly distributed on the outer side of the conical head 312 are pushed. Since one end of the screw rod 41 penetrates through the medicine injection cylinder 2 and is fixedly connected to the conical head 312, the rotation of the rotating blade 42 drives the screw rod 41 to start rotating. Under the thrust generated by the spiral blades on the surface of the screw rod 41, the dissolved medicine in the medicine injection cylinder 2 is pushed downward and enters the medicine injection pipe 43. As the medicine in the medicine injection pipe 43 continuously increases, the generated pressure pushes the medicine discharging cylinder 44 to move outward against the elastic force of the first spring 47. When the medicine discharging holes 45 move out of the medicine injection pipe 43, the medicine flows into the groundwater from the medicine discharging holes 45.

[0039] With the above solution: through the medicine discharging device 4, the speed at which the medicine in the medicine injection cylinder 2 is discharged into the groundwater can be automatically changed according to the groundwater flow rate. When the groundwater flow rate is relatively fast, the driving force received by the rotating blade 42 is greater, the rotation speed is increased, and the rotation of the screw rod 41 is also faster, so that the speed at which the medicine is pushed into the medicine injection pipe 43 is increased and the discharged medicine is increased; on the contrary, when the groundwater flow rate is relatively slow, the rotation speed of the rotating blade 42 is slowed down, and the medicine discharge speed is also correspondingly reduced. This automatic adaptation mechanism can make the dosage of the medicine match the actual situation of the groundwater, improving the utilization efficiency of the medicine and the repair effect.

[0040] Refer to Figures 10 to 11, the medicine storage device 5 includes a medicine storage cylinder 51 that is slidably inserted into the inner wall of the outer cylinder 1. The mouth of the medicine storage cylinder 51 is conical. A groove is provided on the inner wall of the medicine storage cylinder 51, and a baffle 52 is rotatably connected in the groove. The baffle 52 is composed of multiple straight plates with a triangular cross-section. A guide rod 53 is fixedly connected to the center of the baffle 52. A closing cover 54 is slidably connected to the outside of the guide rod 53. The closing cover 54 is conical. The top of the screw rod 41 is fixedly connected with a top block 55. There are multiple groups of top blocks 55, which are evenly distributed at the top of the screw rod 41. The cross-sectional size of the top block 55 is the same as the gap between the multiple straight plates in the baffle 52. The top block 55 abuts against the bottom end of the closing cover 54. The top of the medicine injection cylinder 2 is fixedly connected with a support plate 56. There are four groups of support plates 56, which are symmetrically distributed at the gaps between the four groups of first water absorption layers 310. The inner wall of the support plate 56 is adapted to the conical mouth of the medicine storage cylinder 51. When the medicine injection cylinder 2 slides down due to gravity and drives the rotating blade 42 to contact the groundwater, the rotating blade 42 is pushed by the water flow, and then drives the screw rod 41 to rotate. When the screw rod 41 rotates, the top block 55 at its top rotates synchronously. When the top block 55 moves to the gap of the baffle 52, under the action of gravity, the top block 55 lifts the closing cover 54. Due to the conical mouth of the medicine storage cylinder 51, the medicine powder in the medicine storage cylinder 51 moves along the conical surface of the closing cover 54 to the side end under the action of gravity, and falls into the medicine injection cylinder 2 from the gap between the closing cover 54 and the baffle 52, and is mixed and dissolved with the water introduced into the medicine injection cylinder 2 by the drainage device 3.

[0041] With the above solution: The rotation of the screw rod 41 drives the top block 55, realizing the automatic feeding of the medicine powder in the medicine storage cylinder 51, eliminating the need for manual operation to feed the medicine powder, reducing the labor input, and improving the work efficiency. The plug-in fit between the closing cover 54 and the baffle 52 effectively prevents the leakage of the medicine powder during the process of inverting the medicine storage cylinder 51 and placing it in the outer cylinder 1. On the one hand, it avoids the waste of the medicine powder, and on the other hand, it ensures the cleanliness of the internal environment of the device, preventing the medicine powder leakage from contaminating other components or affecting their normal operation.

[0042] The working principle of the present invention is as follows: When in use, first put the medicinal powder into the medicine storage cylinder 51, fill the medicine storage cylinder 51 to two-thirds of its position, and quickly invert the medicine storage cylinder 51. Since the closing cover 54 is closer to the mouth of the medicine storage cylinder 51 than the medicinal powder, the closing cover 54 is inserted into the baffle 52 before the medicinal powder, blocking the mouth of the medicine storage cylinder 51. Then, place the mouth of the medicine storage cylinder 51 downward into the outer cylinder 1 until the top block 55 abuts against the baffle 52, lifting the medicine storage cylinder 51. Then, connect the outer cylinder 1 to an external device through the flange in the outer cylinder 1. After that, the external device drives the outer cylinder 1 to rotate, and through the cooperation of the conical head fixed at the bottom end of the straight rod in the outer cylinder 1 and the spiral blade spirally wound outside the straight rod, it can efficiently drill into the ground during rotation until the conical head in the outer cylinder 1 contacts the groundwater. At this time, the groundwater enters the third water absorption layer 313 through the water absorption groove 314. Due to the characteristic of the thermal motion of water molecules, they will diffuse from the high-concentration area to the low-concentration area. After the bottom water absorption layer absorbs water, the water molecule concentration is higher, while the water molecule concentration in the upper water absorption layer is lower. Therefore, the water molecules will move from the bottom water absorption layer to the upper water absorption layer through diffusion, so that the first water absorption layer 310, the second water absorption layer 311, and the third water absorption layer 313 are filled with water and filter the sediment in the water. Since the water absorption layer is filled with water, the weight of the medicine injection cylinder 2 increases, so that the abutting force received by the limiting member 35 inserted into the limiting groove 39 increases. Under the action of the limiting groove 39 and the arc surface of the limiting member 35, the limiting member 35 moves into the third installation groove 33, and the spring three 38 is forced to contract until the limiting member 35 completely exits the limiting groove 39, releasing the restriction on the medicine injection cylinder 2, and the medicine injection cylinder 2 slides downward due to gravity. During the movement of the limiting member 35, the limiting member 35 pushes the ball 36 to move synchronously, so that the ball 36 pushes the extrusion member 34 to move towards the first water absorption layer 310 until the edge of the arc-shaped plate with a triangular cross-section in the extrusion member 34 squeezes the first water absorption layer 310. During the process of the medicine injection cylinder 2 sliding downward due to gravity, the extrusion member 34 remains in its current position, scraping the water in the first water absorption layer 310 upward until the extrusion member 34 abuts against the limiting plate at the top of the first water absorption layer 310. The water scraped and moved upward flows into the medicine injection cylinder 2 through the gaps between the four groups of support plates 56. With the scraping from top to bottom, and since the first water absorption layer 310 is already filled with water, the extra water squeezed out will be transmitted upward and extruded from the top of the first water absorption layer 310. At this time, the water will accumulate at the top of the first water absorption layer 310 until it reaches a certain amount and then flows into the medicine injection cylinder 2 due to gravity, that is, the scraped water will enter the interior of the medicine injection cylinder 2. Therefore, the overall weight of the medicine injection cylinder 2 will not decrease during this process. At the same time, since the medicine injection cylinder 2 slides downward due to gravity, the rotating blade 42 inserted into the conical head in the outer cylinder 1 slides synchronously and contacts the groundwater. With the flow of the groundwater, the rotating blade 42 is pushed, driving the spiral rod 41 to start rotating. As the spiral rod 41 rotates, the top block 55 rotates synchronously until the top block 55 moves to the gap of the baffle 52. At this time, under the action of gravity,The top block 55 jacks up the closing cover 54, causing the powder in the medicine storage cylinder 51 to move along the conical surface of the closing cover 54 towards the side end, and fall into the medicine injection cylinder 2 from the gap between the closing cover 54 and the baffle 52. It mixes and dissolves with the water in the medicine injection cylinder 2. Then, under the thrust generated by the spiral blades on the surface of the screw rod 41, the medicine in the medicine injection cylinder 2 is pushed downward and enters the medicine injection tube 43. As the medicine in the medicine injection tube 43 continuously increases, the pressure generated pushes the medicine discharge cylinder 44 to move outward, and at the same time stretches the first spring 47 until the medicine outlet hole 45 moves out of the medicine injection tube 43. At this time, the medicine flows into the groundwater from the medicine outlet hole 45; through the effective filtration of the sediment in the water by the water absorption layer in the drainage device 3, the sediment is prevented from entering the medicine injection cylinder 2 and the medicine discharge device 4, ensuring the stable operation of the device and greatly extending the service life. By the water absorption of the water absorption layer to increase the weight of the medicine injection cylinder 2, the limit member 35 is automatically triggered to move, realizing the automatic control of the medicine injection cylinder 2 to fall and contact the groundwater. Without additional power equipment and complex control systems, the structure is simplified, the cost is reduced, and the reliability and practicality are improved. Through the extrusion of the water absorption layer 310 by the extrusion member 34, the water filled is stably transported to the medicine injection cylinder 2, providing the necessary moisture for the dissolution of the medicine, ensuring the full dissolution of the medicine, facilitating the subsequent uniform delivery. Through the rotation of the rotating blade 42 in the medicine discharge device 4 to automatically adjust the rotation speed of the screw rod 41 according to the groundwater flow rate, the automatic adjustment of the speed of discharging the medicine in the medicine injection cylinder 2 into the groundwater is realized. When the groundwater flow rate is fast, the medicine discharge speed increases; when the flow rate is slow, the medicine discharge speed decreases, making the medicine delivery amount accurately fit the actual situation of the groundwater, significantly improving the medicine utilization efficiency and the repair effect. And its structure is mainly composed of the screw rod 41, the rotating blade 42, etc., relying on the groundwater flow and mechanical transmission to work, reducing the probability of failure and the maintenance cost. By driving the top block 55 in the medicine storage device 5 to rotate by the screw rod 41, the automatic delivery of the powder in the medicine storage cylinder 51 is realized, without manual operation, saving manpower and greatly improving the work efficiency. Through the tight insertion of the closing cover 54 and the baffle 52, when the medicine storage cylinder 51 is inverted and placed in the outer cylinder 1, the powder leakage is effectively prevented, the powder waste is avoided, the inside of the device is kept clean, and the normal operation of other components is prevented from being affected by the powder leakage.,

[0043] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.,

Claims

1. A chemical dosing device for groundwater remediation and treatment, comprising: An outer cylinder (1) for drilling, characterized in that a medicine storage device (5) for storing medicine is arranged inside the outer cylinder (1), a medicine injection cylinder (2) for mixing medicine with water is slidably inserted into the outer cylinder (1), a drainage device (3) for introducing part of the groundwater into the medicine injection cylinder (2) is arranged inside the outer cylinder (1), and a medicine discharging device (4) for discharging the medicine in the medicine injection cylinder (2) into the groundwater is arranged on the medicine injection cylinder (2); The drainage device (3) includes a tapered head (312) rotatably connected to the bottom end of the medicine injection cylinder (2); The medicine discharging device (4) includes a screw rod (41) arranged inside the medicine injection cylinder (2) and rotatably connected to the medicine injection cylinder (2), and one end of the screw rod (41) penetrates through the medicine injection cylinder (2) and is fixedly connected to the tapered head (312). A rotating blade (42) is fixedly connected to the tapered head (312). A medicine injection pipe (43) is connected to the bottom end of the medicine injection cylinder (2) in a through manner. An installation ring one (48) is fixedly connected to the inner wall of the medicine injection pipe (43). A medicine discharging cylinder (44) is slidably inserted into the medicine injection pipe (43), and the medicine discharging cylinder (44) is slidably inserted into the installation ring one (48). Medicine discharging holes (45) are formed through the outer side of the medicine discharging cylinder (44). An installation ring two (46) is fixedly connected to the end face of the medicine discharging cylinder (44). One end of the installation ring two (46) is fixedly connected to a spring one (47), and one end of the spring one (47) is fixedly connected to the installation ring one (48); Wherein, when the tapered head (312) detaches from the outer cylinder (1) and falls into the groundwater, with the flow of the groundwater, the rotating blade (42) is pushed, thereby driving the screw rod (41) to start rotating. Under the thrust generated by the spiral blades on the surface of the screw rod (41), the medicine in the medicine injection cylinder (2) is pushed downward and enters the medicine injection pipe (43). As the medicine in the medicine injection pipe (43) continuously increases, the generated pressure pushes the medicine discharging cylinder (44) to move outward, and at the same time, the spring one (47) is stretched until the medicine discharging holes (45) move out of the medicine injection pipe (43). At this time, the medicine flows into the groundwater from the medicine discharging holes (45); The drainage device (3) further includes an installation groove one (31), an installation groove two (32) and an installation groove three (33) formed on the inner wall of the outer cylinder (1), and the installation groove one (�1) is arranged above the installation groove two (32), and the installation groove three (33) is respectively connected to the installation groove one (31) and the installation groove two (32) in a through manner; An extrusion member (34) is slidably inserted into the installation groove one (31), and one end of the extrusion member (34) is slidably inserted into the top end of the installation groove three (33). One end of the extrusion member (34) is fixedly connected to a spring two (37), and one end of the spring two (37) is fixedly connected to the inner wall of the installation groove one (31); A limiting member (35) is slidably inserted into the second mounting groove (32), and one end of the limiting member (35) is slidably inserted into the bottom end of the third mounting groove (33). One end of the limiting member (35) is fixedly connected to a third spring (38), and one end of the third spring (38) is fixedly connected to the inner wall of the second mounting groove (32). A ball (36) is slidably connected in the third mounting groove (33); A limiting groove (39) is formed on the outer side of the medicine injection cylinder (2). The limiting groove (39) is adapted to the limiting member (35). A first water absorption layer (310) is fixedly connected to the outer side of the medicine injection cylinder (2). A second water absorption layer (311) is fixedly connected to the bottom end of the medicine injection cylinder (2). The bottom end of the first water absorption layer (310) abuts against the top end of the second water absorption layer (311); A third water absorption layer (313) is fixedly connected to the conical head (312). The top end of the third water absorption layer (313) abuts against the bottom end of the second water absorption layer (311). A water absorption groove (314) is formed through the bottom end of the conical head (312).

2. The chemical dosing device for groundwater remediation according to claim 1, wherein The medicine storage device (5) includes a medicine storage cylinder (51) slidably inserted into the inner wall of the outer cylinder (1). A baffle (52) is rotatably connected to the inner wall of the medicine storage cylinder (51). A guide rod (53) is fixedly connected to the top end of the baffle (52). A closing cover (54) is slidably connected to the outer side of the guide rod (53).

3. The chemical agent dosing device for groundwater remediation according to claim 2, characterized in that, A top block (55) is fixedly connected to the top end of the screw rod (41). The top block (55) abuts against the bottom end of the closing cover (54). A support plate (56) is fixedly connected to the top end of the medicine injection cylinder (2).

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