Water quality purification device capable of slowly releasing medicine

Abstract

The invention provides a water purification device capable of slowly releasing medicine, which comprises a medicine storage part and a medicine driving part arranged at the end part of the medicine storage part, and the medicine storage part and the medicine driving part adopt a detachable connection structure. A dynamic sealing assembly is arranged in the medicine storage part and forms full circumferential sealing with the inner wall of the medicine storage part through a precisely matched sliding face, and the movement stroke of the dynamic sealing assembly covers the axial space of the medicine storage part. Medicine is contained in a closed space between a bottom cavity of the medicine storage part and the sealing part, when compressed gas is injected into the medicine driving part, the sealing part is driven to conduct linear displacement, the medicine is made to make continuous contact with a water permeable interface at the bottom of the medicine storage part through gradual extrusion, and controllable dissolution and release of the medicine are achieved through the hydraulic permeation effect. When the device runs, gas pressure is converted into uniformly distributed load through the sealing part to act on the drug stack layer, so that the drug forms a compact contact surface under controlled pressure, and stable slow release of active ingredients of the drug is achieved by generating directional mass exchange with a water body flowing through a water permeable interface.

Description

Technical Field

[0001] The present invention relates to the technical field of water source treatment, in particular to a water purification device capable of slowly releasing medicine. Background Art

[0002] Pollutants such as organic matter and plankton are common in natural water bodies. Direct ingestion of such untreated raw water can be harmful to human health, so water purification is essential to optimize water quality.

[0003] Chemical treatment is a mainstream water purification technology. Chemicals like polyaluminium chloride, with their excellent flocculation and coagulation properties, are dually effective in removing organic pollutants and heavy metal ions, making them core agents in industrial and municipal water treatment. However, conventional processes require large, concentrated doses of the agent. In practice, this can lead to insufficient dissolution and precipitation, and also suffers from technical drawbacks such as insufficient diffusion of the agent molecules.

[0004] While quantitative dosing devices can achieve timed and quantitative drug delivery to address these technical bottlenecks, their application faces significant limitations: These devices typically require fixed installation at specific locations and rely on electromechanical devices such as peristaltic pumps and metering pumps, coupled with a piping system, for drug delivery. This results in high infrastructure and maintenance costs. Furthermore, the combined effects of high drug concentrations in the dosing area and delayed diffusion make it difficult to achieve a uniform drug concentration field in the water, severely limiting water purification efficiency.

[0005] Based on the above technical bottlenecks, the present invention aims to develop a water purification device with a sustained-release function, and through innovative structural design, achieve optimal utilization of the drug efficacy and significant reduction in comprehensive operating costs. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a water purification device that can slowly release drugs, so as to solve the problems of poor effect and high cost of water purification equipment in the prior art.

[0007] To achieve the above-mentioned and other related purposes, the present invention provides a water purification device capable of slowly releasing drugs, comprising a drug storage portion, an end of which is provided with a drug driving portion, wherein the drug storage portion and the drug driving portion are detachably connected;

[0008] The medicine storage portion is provided with a sealing portion inside, the sealing portion can slide inside the medicine storage portion, and the outer surface of the sealing portion is completely in contact with the inner wall of the medicine storage portion;

[0009] The external medicine is placed between the inner bottom of the medicine storage part and the sealing part. The medicine driving part is filled with gas to drive the sealing part to apply pressure to the medicine, causing the medicine to contact the water source through the bottom of the medicine storage part and dissolve and release.

[0010] Preferably, the medicine storage portion includes a medicine storage cartridge, a medicine outlet is provided at the axis of the bottom of the medicine storage cartridge, a connector is provided at the top of the medicine storage cartridge, and the medicine driving portion is connected to the medicine storage cartridge via the connector;

[0011] The side surface of the sealing portion is completely in contact with the inner wall of the medicine storage cartridge.

[0012] Preferably, a plurality of medicine gaskets are arranged on the inner bottom of the medicine storage cartridge, and these gaskets are evenly distributed in a circular shape with the medicine outlet as the center.

[0013] Preferably, a plurality of device stabilizing pieces are provided in a circumferential array on the outer surface of the drug storage cartridge.

[0014] Preferably, each of the device stabilizing plates is a curved plate-shaped body, and the upper and lower ends of each of the device stabilizing plates are both wide at the top and narrow at the bottom;

[0015] The combined cross-section of the stabilizing plates of all the devices is conical.

[0016] Preferably, the drug driving portion includes a connecting flange head, the inner diameter of the connecting flange head is equal to the inner diameter of the drug storage cartridge, the connecting flange head is connected to the connecting head, and the inner wall of the connection is flush;

[0017] An air guide tube is provided on the top of the connecting flange head, and a driving air bag is provided on the upper end of the air guide tube. The driving air bag can expand after being inflated and can shrink after being deflated;

[0018] An air injection head is provided at the upper end portion of the driving airbag, and a sealing cover is provided on the air injection head.

[0019] Preferably, a plurality of reflective sheets are equidistantly arranged on the outer surface of the driving airbag.

[0020] Preferably, the outer surface of the driving airbag is provided with a plurality of protective members, and the plurality of protective members are in a lantern shape;

[0021] Both ends of each protective member are respectively connected to the outer surface of the air guide pipe and the air injection head.

[0022] Preferably, the sealing portion comprises a piston plate, the outer diameter of the piston plate is equal to the inner diameter of the drug storage cartridge, and the piston plate can be driven by air pressure or water pressure to move along the axial direction of the drug storage cartridge.

[0023] Preferably, a cavity is provided inside the piston plate.

[0024] As described above, the water purification device capable of slowly releasing medicine of the present invention has the following beneficial effects:

[0025] 1. The present invention stores drugs by providing a drug storage part, and provides a drug driving part at the upper part of the drug storage part and fills the part with gas to apply pressure to the sealing part in the drug storage part, so that the drugs in the drug storage part are pressed against the inner bottom of the drug storage part and come into contact with the water source, so that the water source can only slowly dissolve the exposed drugs, thereby achieving the effect of slowly releasing the drugs.

[0026] At the same time, the device is small in size and low in preparation cost. It can be placed in water bodies in batches at any location, and the drug diffusion efficiency can be improved by releasing drugs at multiple points simultaneously.

[0027] 2. The present invention fully loads the drug storage cartridge with drugs, making the weight of the entire device greater than the buoyancy of the inflated driving airbag, allowing the entire device to sink to the bottom of the water area. Water contacts the drugs in the drug storage cartridge through the drug release port, dissolves and releases the drugs. As the drugs in the drug storage cartridge are gradually consumed, the buoyancy of the driving airbag causes the entire device to gradually float up, and continuously releases drugs during the floating process, thereby achieving multi-level purification of the water area.

[0028] 3. The present invention provides a sealing portion inside the drug storage cartridge and isolates the drug release port and the air guide tube through the sealing portion to maintain the air pressure in the driving airbag, thereby preventing the gas in the driving airbag from being discharged from the drug release port after the drug in the drug storage cartridge is consumed, causing the entire device to be unable to float and resulting in the loss of the device.

[0029] 4. The present invention arranges a plurality of device stabilizing plates in a circular array on the outer surface of the drug storage cartridge, and makes the device stabilizing plates wide at the top and narrow at the bottom to form a cone shape as a whole, so that the entire device can stand stably and vertically in the water, thereby improving the stability of drug release.

[0030] At the same time, the device's stabilizer will interact with the undercurrent in the water, causing the entire device to rotate vertically. The centrifugal force of the rotation will keep the device vertical, preventing it from tipping over or inverting.

[0031] 5. The present invention provides a protective member on the outside of the driving airbag to limit the maximum expansion degree of the driving airbag, thereby effectively preventing the driving airbag from being damaged due to overinflation. It also avoids the problem of the device being unable to sink to the bottom when fully loaded with medicine due to overinflation.

[0032] At the same time, when the device is suspended in water, the protective member can effectively protect the driving airbag, reduce its collision with suspended matter in the water, and thus extend the service life of the driving airbag.

[0033] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Shown is a schematic structural diagram of the present invention.

[0035] Figure 2 Shown is an exploded view of the present invention.

[0036] Figure 3 Shown is a cross-sectional view of the structure of the present invention.

[0037] Figure 4 Shown is a structural cross-sectional view of the medicine storage portion of the present invention.

[0038] Figure 5 Shown as the present invention Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0039] Figure 6 Shown is a cross-sectional view of the structure of the drug driving part of the present invention.

[0040] Figure 7 Shown is a cross-sectional view of the structure of the sealing portion of the present invention.

[0041] Figure 8 Shown is a schematic diagram of the state of the present invention in water.

[0042] Figure 9 Shown is a graph showing the release rate of the potassium permanganate drug of the present invention at different water temperatures.

[0043] Component number description:

[0044] 1. Drug storage unit; 101. Drug storage cartridge; 102. Drug outlet; 103. Connector; 104. Drug gasket; 105. Device stabilizing sheet;

[0045] 2. Drug drive unit; 201. Connecting flange; 202. Air guide tube; 203. Drive airbag; 204. Injection head; 205. Sealing cover; 206. Reflective sheet; 207. Protective element;

[0046] 3. Sealing part; 301. Piston plate; 302. Cavity chamber. DETAILED DESCRIPTION

[0047] The following describes the embodiments of the present invention through specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present invention through the contents disclosed in this specification.

[0048] See also Figures 1 to 9. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0049] like Figure 1 - Figure 3 and Figure 8 As shown, the present invention provides a water purification device that can slowly release drugs, including a drug storage part 1, in which drugs for purifying water, such as potassium permanganate, polyaluminum chloride and other solid drugs, can be placed. A drug driving part 2 is provided at the end of the drug storage part 1. The drug driving part 2 will expand after being inflated, thereby providing buoyancy to the entire device and applying pressure to the drugs, so that the drugs fit tightly together. Depending on the amount of drugs, the device can sink to the bottom, suspend or float, thereby purifying the bottom, middle and top of the water body. The drug storage part 1 and the drug driving part 2 are connected in a detachable manner. When filling the drugs, the drug storage part 1 and the drug driving part 2 are separated, and the drugs are filled from the upper opening of the drug storage part 1 into the interior of the drug storage part 1, thereby improving the convenience of drug filling.

[0050] A sealing portion 3 is provided inside the drug storage portion 1 for isolating the drug storage portion 1 from the drug drive portion 2. The outer surface of the sealing portion 3 is in full contact with the inner wall of the drug storage portion 1, so that a sealed space is formed between the inner upper portion of the drug storage portion 1 and the drug drive portion 2. This prevents the gas in the drug drive portion 2 from being lost after the drug in the drug storage portion 1 is completely released, which would cause the entire device to be unable to float on the water surface and be recovered. The sealing portion 3 can slide inside the drug storage portion 1. Under the action of the air pressure in the drug drive portion 2, the sealing portion 3 will move in the direction of the drug, thereby applying pressure to the drug, thereby ensuring a tight connection between the drugs and reducing the possibility of water seepage. The drug can only be dissolved and released through contact with the water source at the bottom of the drug storage portion 1, so as to control the rate of drug release.

[0051] The device has a simple overall structure, is easy to manufacture, and has low production costs and manufacturing complexity. During use, it can be deployed in batches into waters requiring purification, improving the flexibility of water purification and the efficiency of drug expansion. After drug delivery, the drug can be recovered for reuse.

[0052] like Figure 2 - Figure 4 As shown, in some embodiments, the drug storage portion 1 of the present invention includes a drug storage cartridge 101, which is a cylindrical body with one end sealed and made of a material that is not easily rusted or corroded. A drug release port 102 is provided at the axis of the bottom of the drug storage cartridge 101, and the diameter of the drug release port 102 is smaller than the inner diameter of the drug storage cartridge 101. Water flows through the drug release port 102 and contacts the drug in the drug storage cartridge 101, slowly dissolving the drug from the bottom of the drug and releasing it. At the same time, it also prevents the drug in the drug storage portion 1 from falling completely into the water through the drug release port 102. A connector 103 is provided at the top of the drug storage cartridge 101, and the outer surface of the connector 103 is provided with an external thread. The drug drive portion 2 is threadedly connected to the drug storage cartridge 101 through the connector 103 to improve the convenience of disassembly and assembly between the drug storage cartridge 101 and the drug drive portion 2, thereby improving the convenience of loading and unloading drugs. The medicine filled in the medicine storage cartridge 101 is preferably in the form of a sheet or a column, and the diameter of the medicine is adapted to the inner diameter of the medicine storage cartridge 101 to prevent water from penetrating upwards.

[0053] The side surface of the sealing portion 3 is completely in contact with the inner wall of the drug storage cartridge 101, isolating the interior of the drug storage cartridge 101 into two upper and lower areas. After the drug is completely released, if the drug drive unit 2 is connected to the outside through the drug release port 102, it may cause gas leakage and water to enter the device, thereby affecting its buoyancy and hindering subsequent recovery.

[0054] like Figure 4 and Figure 5 As shown, in some embodiments, the inner bottom of the drug storage cartridge 101 of the present invention is provided with a plurality of drug gaskets 104, and all drug gaskets 104 are distributed in a circular array with the drug release port 102 as the axis. When the drug is placed inside the drug storage cartridge 101, the bottom of the drug will be supported by the drug gasket 104, so that a gap is left between the bottom of the drug and the inner bottom of the drug storage cartridge 101, thereby increasing the contact area between the drug and water. To prevent the edge of the bottom of the drug from being blocked by the bottom of the drug storage cartridge 101, water can only dissolve the drug through the drug release port 102, resulting in a hole in the middle of the drug. When a hole is formed in the middle of the drug, the drug will dissolve outward along the hole. This causes the drug to be released faster and faster, rather than released steadily.

[0055] like Figure 1 - Figure 4 As shown, in some embodiments, the outer surface of the drug storage cartridge 101 of the present invention is provided with a plurality of device stabilizing tabs 105 arranged in a circumferential array. When the device is suspended and there is an undercurrent in the water, the device stabilizing tabs 105 are pushed by the undercurrent, causing the entire device to rotate. The centrifugal force generated by the rotation of the device maintains the device vertically stable, thereby reducing the possibility of the device tipping over or inverting.

[0056] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, each device stabilizer 105 is a curved plate, making it more susceptible to undercurrent movement. Each stabilizer 105 has a wide top and narrow bottom, resulting in a tapered cross-section. The tapered bottom allows the entire device to remain vertically stable in water, ensuring more stable contact between the drug and the water. Even when the device is floating, the drug release port 102 remains submerged, allowing the drug to release its properties through contact with the water.

[0057] like Figure 3 and Figure 6 As shown, in some embodiments, the drug driving portion 2 of the present invention includes a connecting flange head 201, the inner wall of which is provided with an internal thread, and the connecting flange head 201 is threadedly connected to the connecting head 103. The inner diameter of the connecting flange head 201 is equal to the inner diameter of the drug storage cartridge 101, and the inner wall of the connection is flush, so as to facilitate the upward and downward movement of the sealing portion 3, and when the sealing portion 3 moves into the interior of the connecting flange head 201, a gas sealing effect can also be achieved.

[0058] An air guide tube 202 is provided at the top of the connecting flange head 201, and a driving airbag 203 is provided at the upper end of the air guide tube 202. An air injection head 204 is provided at the upper end of the driving airbag 203, through which gas can be injected into the interior of the driving airbag 203. A sealing cover 205 is provided on the air injection head 204 to prevent air leakage from the air injection head 204 and improve the sealing of the interior of the driving airbag 203. The driving airbag 203 is a gas or rubber airbag that can expand to increase buoyancy after inflation. During the inflation process, the gas will exert pressure on the sealing part 3, causing the sealing part 3 to move toward the medicine, exerting pressure on the medicine, and maintaining a tight fit between the tablets. At the same time, when the medicine at the bottom is released, the medicine above can be driven to move downward toward the medicine release port 102. After deflation, it can shrink for easy storage, reducing the possibility of the driving airbag 203 being punctured.

[0059] like Figure 1 - Figure 3 As shown, in some embodiments, the outer surface of the driving airbag 203 of the present invention is evenly spaced with a plurality of reflective sheets 206, each painted with a vibrant reflective or luminous pattern. This makes the device more visible when floating on the water surface, facilitating device recovery by personnel. In particular, when the device rotates under the influence of the water flow, the intermittent reflective sheets 206 will intermittently reflect light due to the rotation, creating a flickering visual effect and enhancing the effectiveness of the warning.

[0060] like Figure 1 - Figure 3As shown, in some embodiments, the outer surface of the driving airbag 203 of the present invention is provided with a plurality of hard protective members 207 in a lantern-shaped configuration to protect the driving airbag 203. When the driving airbag 203 is inflated, the protective members 207 limit the maximum expansion of the driving airbag 203, thereby preventing the driving airbag 203 from over-expanding and bursting. Furthermore, the protective members 207 prevent the driving airbag 203 from sinking to the bottom when fully loaded with medication due to excessive buoyancy. During use, the expansion coefficient of the driving airbag 203 can be adjusted appropriately according to the density of the medication to control the floating height of the device in water.

[0061] The protective member 207 can prevent the driving airbag 203 from over-expanding. At the same time, the skeleton formed by the protective member 207 can form a protective body around the driving airbag 203 to prevent the driving airbag 203 from excessively colliding with floating objects in the water when the driving airbag 203 is suspended in the water.

[0062] Both ends of each protective member 207 are connected to the outer surfaces of the air guide tube 202 and the air injection head 204 respectively, so that the protective member 207 can be connected to a hard object to obtain stable support and will not deform with the expansion or contraction of the driving airbag 203.

[0063] like Figure 3 As shown, in some embodiments, the sealing portion 3 of the present invention includes a piston plate 301, which is in the shape of a round pancake. The outer diameter of the piston plate 301 is equal to the inner diameter of the drug storage cartridge 101, thereby ensuring that the piston plate 301 can separate the interior of the drug storage cartridge 101 and ensure that the two separated spaces are well sealed. The piston plate 301 can be driven by air pressure or water pressure to move along the axial direction of the drug storage cartridge 101. Driven by air pressure, the piston plate 301 applies pressure to the drugs to ensure that the drugs are tightly bonded. During the drug release process, when the water pressure is greater than the pressure inside the driving airbag 203, the water pressure will push the piston plate 301 toward the driving airbag 203, causing the gas to concentrate inside the driving airbag 203, making the driving airbag 203 more full and increasing the buoyancy.

[0064] like Figure 7 As shown, in some embodiments, the piston plate 301 of the present invention is designed with a hollow chamber 302 inside to reduce its weight, thereby making it easier for air pressure and water pressure to drive the piston plate 301 to move. In addition, the hollow chamber 302 also adds additional buoyancy to the piston plate 301 during the floating process of the device.

[0065] like Figure 9 As shown below, taking potassium permanganate as an example, the amount released at different water temperatures is:

[0066] Table 1

[0067] Temperature (℃) Release time (hours) Release amount (%) 5 0 0 5 24 20 5 48 40 5 72 60 5 96 80 5 120 100

[0068] Table 2

[0069] Temperature (℃) Release time (hours) Release amount (%) 15 0 0 15 24 30 15 48 60 15 72 85 15 96 100

[0070] Table 3

[0071] Temperature (℃) Release time (hours) Release amount (%) 25 0 0 25 24 40 25 48 80 25 72 100

[0072] Table 4

[0073] Temperature (℃) Release time (hours) Release amount (%) 35 0 0 35 24 50 35 48 95 35 72 100

[0074] As can be seen from the above graph, the drug release rate is linearly related to water temperature; higher water temperatures lead to faster drug release. It's important to note that this experimental data was measured at a constant temperature, and the water temperature slowly rises from the bottom upwards. Therefore, when the ambient temperature is above 4°C, the actual drug release rate accelerates as the device gradually rises.

[0075] The specific use process of the present invention is as follows:

[0076] Separate the drug storage cartridge 101 and the connecting flange head 201, place the drugs in order and neatly inside the drug storage cartridge 101, then place the piston piece 301 on top of the drugs inside the drug storage cartridge 101, and connect the drug storage cartridge 101 and the connecting flange head 201;

[0077] Inject gas from the injection head 204 into the driving airbag 203 to expand the driving airbag 203 and seal the injection head 204 through the sealing cap 205. At this time, the gas pressure drives the piston plate 301 to compact the medicine.

[0078] The device, after being filled with medicine and inflated, is thrown into the water. Under the action of the weight of the medicine, the device first sinks to the bottom of the water to release the medicine. As the medicine is gradually consumed, the device slowly floats up until the medicine is completely released and floats to the water surface.

[0079] The staff salvaged and recovered the device that had completely released the drug from the water for next use.

[0080] In summary, the water purification device capable of slowly releasing drugs of the present invention stores drugs by providing a drug storage part 1, and provides a drug driving part 2 at the upper inner part of the drug storage part 1 and fills the drug storage part 1 with gas to apply pressure to the sealing part 3 in the drug storage part 1, so that the drugs in the drug storage part 1 are pressed against the inner bottom of the drug storage part 1 and come into contact with the water source, so that the water source can only slowly dissolve the exposed drugs, thereby achieving the effect of slowly releasing the drugs.

[0081] At the same time, the device is small in size and low in preparation cost. It can be placed in batches in water areas at any location. By releasing drugs synchronously at multiple points, it can significantly improve the diffusion efficiency of drugs.

[0082] By fully loading the drug storage cartridge 101 with medication, the device's weight exceeds the buoyancy of the inflated driving airbag 203, allowing the entire device to sink to the bottom of the water. Water then enters the drug storage cartridge 101 through the drug release port 102, coming into contact with the medication and gradually dissolving and releasing it. As the medication in the drug storage cartridge 101 decreases, the buoyancy of the driving airbag 203 causes the entire device to gradually float upwards, continuously releasing the medication as it rises, achieving multi-level water purification.

[0083] The present invention provides a sealing portion 3 inside the drug storage cartridge 101, and isolates the drug release port 102 and the air guide tube 202 through the sealing portion 3, thereby maintaining the air pressure in the driving airbag 203, thereby preventing the gas in the driving airbag 203 from being discharged from the drug release port 102 after the drug in the drug storage cartridge 101 is consumed, causing the entire device to be unable to float and resulting in the loss of the device.

[0084] The present invention arranges a plurality of device stabilizing plates 105 in a circular array on the outer surface of the drug storage cartridge 101, and makes the device stabilizing plates 105 wide at the top and narrow at the bottom to form a cone shape as a whole, so that the entire device can stand stably and vertically in water, thereby improving the stability of drug release.

[0085] At the same time, the device stabilizing sheet 105 will interact with the undercurrent in the water, causing the entire device to rotate vertically. The centrifugal force of the rotation keeps the device vertical to avoid tipping over and inverting.

[0086] The present invention sets a protective member 207 on the outside of the driving airbag 203 to limit the maximum expansion degree of the driving airbag 203 through the protective member 207, thereby preventing the driving airbag 203 from being damaged by overinflation and preventing the driving airbag 203 from being overinflated and causing the device to be unable to sink to the bottom when fully loaded with medicine.

[0087] At the same time, the protective member 207 can protect the driving airbag 203 when the entire device is suspended in water, reduce the impact force between the driving airbag 203 and suspended matter in the water, and increase the service life of the driving airbag 203.

[0088] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0089] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A water purification device capable of slowly releasing drugs, characterized in that: The invention comprises a medicine storage part (1), wherein a medicine driving part (2) is provided at the end of the medicine storage part (1), and the medicine storage part (1) and the medicine driving part (2) are connected in a detachable manner; A sealing portion (3) is provided inside the medicine storage portion (1), and the sealing portion (3) can slide inside the medicine storage portion (1), and the outer surface of the sealing portion (3) is completely in contact with the inner wall of the medicine storage portion (1); The external medicine is placed between the inner bottom of the medicine storage part (1) and the sealing part (3). The medicine driving part (2) is filled with gas to drive the sealing part (3) to apply pressure to the medicine, so that the medicine contacts the water source through the bottom of the medicine storage part (1) and is dissolved and released.

2. The water purification device capable of slowly releasing drugs according to claim 1, characterized in that: The medicine storage portion (1) includes a medicine storage cartridge (101), a medicine discharge port (102) is provided at the axis of the bottom of the medicine storage cartridge (101), a connector (103) is provided at the top of the medicine storage cartridge (101), and the medicine driving portion (2) is connected to the medicine storage cartridge (101) via the connector (103); The side surface of the sealing portion (3) is completely in contact with the inner wall of the medicine storage cartridge (101).

3. The water purification device capable of slowly releasing drugs according to claim 2, characterized in that: The inner bottom of the drug storage cartridge (101) is provided with a plurality of drug gaskets (104), and these gaskets (104) are evenly distributed in a circular shape with the drug dispensing opening (102) as the center.

4. The water purification device capable of slowly releasing drugs according to claim 2, characterized in that: The outer surface of the drug storage cartridge (101) is provided with a plurality of device stabilizing sheets (105) in a circumferential array.

5. The water purification device capable of slowly releasing drugs according to claim 4, characterized in that: Each of the device stabilizing plates (105) is a curved plate-shaped body, and the upper and lower ends of each of the device stabilizing plates (105) are both wide at the top and narrow at the bottom; The combined cross-section of all the device stabilizing plates (105) is conical.

6. The water purification device capable of slowly releasing drugs according to claim 2, characterized in that: The drug driving part (2) comprises a connecting flange head (201), the inner diameter of the connecting flange head (201) is equal to the inner diameter of the drug storage cartridge (101), the connecting flange head (201) is connected to the connecting head (103), and the inner walls of the connection are flush; An air guide tube (202) is provided on the top of the connecting flange head (201), and a driving air bag (203) is provided on the upper end of the air guide tube (202). The driving air bag (203) can expand after being inflated and can shrink after being deflated; An air injection head (204) is provided at the upper end of the driving airbag (203), and a sealing cover (205) is provided on the air injection head (204).

7. The water purification device capable of slowly releasing drugs according to claim 6, characterized in that: A plurality of reflective sheets (206) are equidistantly arranged on the outer surface of the driving airbag (203).

8. The water purification device capable of slowly releasing drugs according to claim 6, characterized in that: The outer surface of the driving airbag (203) is provided with a plurality of protective members (207), and the plurality of protective members (207) are in a lantern shape; Both ends of each protective member (207) are respectively connected to the outer surfaces of the air guide tube (202) and the air injection head (204).

9. The water purification device capable of slowly releasing drugs according to claim 2, characterized in that: The sealing portion (3) comprises a piston plate (301), the outer diameter of the piston plate (301) is equal to the inner diameter of the drug storage cartridge (101), and the piston plate (301) can be driven by air pressure or water pressure to move along the axial direction of the drug storage cartridge (101).

10. The water purification device capable of slowly releasing medicine according to claim 9, characterized in that: A hollow chamber (302) is provided inside the piston plate (301).

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