A water purifier capable of slowly releasing medicine

Abstract

The application provides a water purification device capable of slowly releasing drugs, comprising a drug storage part and a drug driving part arranged at the end of the drug storage part, wherein the drug storage part and the drug driving part are connected by a detachable connection structure. A dynamic sealing assembly is arranged in the drug storage part, which forms a full circumferential seal with the inner wall of the drug storage part through precise sliding surfaces, and the movement stroke covers the axial space of the drug storage part. The drugs are contained in the sealed space between the bottom cavity of the drug storage part and the sealing part. When compressed gas is injected into the drug driving part, the sealing part is driven to perform linear displacement, and the drugs are continuously contacted with the water-permeable interface at the bottom of the drug storage part through progressive extrusion, so that the controlled dissolution and release of the drugs are realized by the hydraulic penetration effect. During the operation of the device, the gas pressure is converted into uniform load acting on the drug stack through the sealing part, which promotes the drug to form a dense contact surface under controlled pressure, and through the directional mass exchange with the water flowing through the water-permeable interface, the stable slow release of the effective components of the drugs is achieved.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to a water purification device that can slowly release drugs. Background Technology

[0002] Natural water bodies commonly contain pollutants such as organic matter and plankton. Direct ingestion of such untreated raw water may harm health; therefore, water purification treatment is necessary to optimize water quality indicators.

[0003] Chemical treatment is a mainstream water purification technology. Among them, polyaluminum chloride and other chemical substances have become core agents in industrial and municipal water treatment due to their excellent flocculation and coagulation properties, which can remove both organic pollutants and heavy metal ions. However, in the dosing process, conventional processes require large-dose centralized addition, but in actual application, large-dose centralized addition can easily lead to insufficient dissolution of the agent and precipitation, and there is also a technical defect of insufficient diffusion rate of agent molecules.

[0004] While quantitative dosing devices can achieve timed and quantitative drug administration, their application has significant limitations: the equipment typically needs to be fixed at a specific location, relying on peristaltic pumps, metering pumps, and other electromechanical devices in conjunction with pipeline systems for drug delivery, resulting in high infrastructure and maintenance costs. Furthermore, the combined effect of excessively high drug concentration and delayed diffusion in the dosing area makes it difficult to form a uniform drug concentration field in the water body, severely restricting water purification efficiency.

[0005] Based on the aforementioned technical bottlenecks, this invention aims to develop a water purification device with slow-release function, and through innovative structural design, to optimize the utilization of reagent efficacy and significantly reduce overall operating costs. Summary of the Invention

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

[0007] To achieve the above and other related objectives, the present invention provides a water purification device capable of slowly releasing drugs, comprising a drug storage section, wherein a drug driving section is provided at the end of the drug storage section, and the drug storage section and the drug driving section are detachably connected.

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

[0009] The external drug is placed between the inner bottom of the drug storage section and the sealing section. The drug driving section applies pressure to the drug by filling it with gas, causing the drug to come into contact with the water source through the bottom of the drug storage section and dissolve and be released.

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

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

[0012] Preferably, the bottom of the medicine storage cylinder is provided with multiple medicine pads, which are evenly distributed in a circular shape with the medicine outlet as the center.

[0013] Preferably, the outer surface of the medicine storage cylinder is provided with a plurality of device stabilizing plates arranged in a circumferential array.

[0014] Preferably, each of the device stabilizing plates is a curved plate-shaped body, and the top and bottom ends of each device stabilizing plate are wider at the top and narrower at the bottom;

[0015] The combined cross-section of all the stabilizers in the aforementioned devices is conical.

[0016] Preferably, the drug driving part includes a connecting flange head, the inner diameter of the connecting flange head is equal to the inner diameter of the drug storage cylinder, the connecting flange head is connected to the connecting head, and the inner wall of the connection is flush with the connecting head.

[0017] The top of the connecting flange is provided with an air guide pipe, and the upper end of the air guide pipe is provided with a driving airbag. The driving airbag can expand when inflated and contract when deflated.

[0018] The upper end of the driving airbag is provided with an air injection head, and the air injection head is provided with a sealing cap.

[0019] Preferably, the outer surface of the driving airbag is provided with a plurality of reflective sheets at equal intervals.

[0020] Preferably, the outer surface of the driving airbag is provided with a plurality of protective components, and the plurality of protective components are lantern-shaped;

[0021] Each of the protective components is connected at both ends to the outer surface of the air guide tube and the air injection head, respectively.

[0022] Preferably, the sealing part includes a piston plate, the outer diameter of which is equal to the inner diameter of the medicine storage cylinder, and the piston plate can be driven by air pressure or water pressure to move along the axial direction of the medicine storage cylinder.

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

[0024] As described above, the water purification device of the present invention, which can slowly release drugs, has the following beneficial effects:

[0025] 1. The present invention stores drugs by setting up a drug storage section, and by setting up a drug driving section in the upper part of the drug storage section and filling it with gas to apply pressure to the sealing section in the drug storage section, so that the drug in the drug storage section comes into contact with the water source at the bottom of the drug storage section, so that the water source can only slowly dissolve the exposed drug, thereby achieving the effect of slow drug release.

[0026] Meanwhile, this device is small in size and low in manufacturing cost, and can be deployed in batches into water bodies at any location to improve drug diffusion efficiency by releasing drugs at multiple points simultaneously.

[0027] 2. This invention fully loads the medicine storage cylinder with medicine, making the weight of the entire device greater than the buoyancy of the inflated driving airbag. This allows the entire device to sink to the bottom of the water. Water comes into contact with the medicine in the storage cylinder through the medicine release port, dissolving and releasing the medicine. As the medicine in the storage cylinder is gradually consumed and reduced, the buoyancy of the driving airbag causes the entire device to gradually float up, continuously releasing medicine during the floating process, thus achieving multi-level purification of the water.

[0028] 3. This invention provides a sealing part inside the medicine storage cylinder, which isolates the medicine outlet and the air guide tube, maintaining the air pressure in the driving airbag. This prevents the gas in the driving airbag from being discharged from the medicine outlet after the medicine in the storage cylinder is consumed, thus preventing the entire device from floating and causing it to be lost.

[0029] 4. The present invention improves the stability of drug release by arranging several device stabilizing plates in a circumferential array on the outer surface of the drug storage cylinder, and making the device stabilizing plates wider at the top and narrower at the bottom, forming an overall conical shape.

[0030] At the same time, the device's stabilizing plate interacts with the undercurrent in the water, causing the entire device to rotate vertically. The centrifugal force of the rotation keeps the device vertical, preventing it from tipping over or turning upside down.

[0031] 5. By setting a protective component on the outside of the driving airbag, the present invention limits the maximum expansion of the driving airbag, effectively preventing the driving airbag from being damaged due to over-inflation, and also avoiding the problem that the device cannot sink when fully loaded with drugs due to over-inflation.

[0032] Meanwhile, when the device is suspended in water, the protective components can effectively protect the drive airbag, reduce its impact with suspended objects in the water, and thus extend the service life of the drive airbag.

[0033] Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value. Attached Figure Description

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

[0035] Figure 2 The diagram shown is an exploded view of the present invention.

[0036] Figure 3 The diagram shown is a cross-sectional view of the structure of this invention.

[0037] Figure 4 The diagram shown is a cross-sectional view of the drug storage section of this invention.

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

[0039] Figure 6 The diagram shown is a cross-sectional view of the drug delivery unit of the present invention.

[0040] Figure 7 The diagram shown is a cross-sectional view of the sealing part of the present invention.

[0041] Figure 8 The diagram shows the state of the present invention in water.

[0042] Figure 9 The graph shows the release rate curves of the potassium permanganate drug of the present invention at different water temperatures.

[0043] Component designation explanation:

[0044] 1. Drug storage section; 101. Drug storage cylinder; 102. Drug dispensing port; 103. Connector; 104. Drug gasket; 105. Device stabilizing plate;

[0045] 2. Drug-driven unit; 201. Connecting flange; 202. Gas delivery tube; 203. Driving airbag; 204. Injection head; 205. Sealing cap; 206. Reflector; 207. Protective components;

[0046] 3. Sealing part; 301. Piston plate; 302. Cavity. Detailed Implementation

[0047] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention through the content disclosed in this specification.

[0048] Please see Figures 1 to 9It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0049] like Figure 1 - Figure 3 and Figure 8 As shown, this invention provides a water purification device that can slowly release medication, including a medication storage section 1. The medication storage section 1 can hold medications for purifying water, such as potassium permanganate or polyaluminum chloride. A medication driving section 2 is located at the end of the medication storage section 1. The medication driving section 2 expands after being inflated, providing buoyancy to the entire device and applying pressure to the medication, causing it to adhere tightly to the surface. Depending on the amount of medication, the device can sink, suspend, or float, thereby purifying the bottom, middle, and top of the water body. The medication storage section 1 and the medication driving section 2 are detachably connected. When filling with medication, the medication storage section 1 and the medication driving section 2 are separated, and the medication is filled into the medication storage section 1 through the upper opening, improving the convenience of medication filling.

[0050] The drug storage section 1 is internally equipped with a sealing section 3 to isolate the drug storage section 1 from the drug driving section 2. The outer surface of the sealing section 3 is completely fitted to the inner wall of the drug storage section 1, forming a sealed space between the upper inner part of the drug storage section 1 and the drug driving section 2. This prevents the gas in the drug driving section 2 from leaking out after the drug in the drug storage section 1 is completely released, which would prevent the entire device from floating on the water surface and being recovered. The sealing section 3 can slide inside the drug storage section 1. Under the action of the air pressure in the drug driving section 2, the sealing section 3 will move towards the drug, thereby applying pressure to the drug and ensuring a tight connection between the drugs, reducing the possibility of water leakage. This ensures that the drug can only come into contact with the water source and dissolve and be released through the bottom of the drug storage section 1, thus controlling the drug release rate.

[0051] The aforementioned device has a simple overall structure, is easy to prepare, and has low preparation cost and process difficulty. In use, it can be placed in batches into the water area requiring purification, improving the flexibility of water purification and the efficiency of drug distribution. Furthermore, after drug administration, it can be recycled and reused.

[0052] like Figure 2 - Figure 4 As shown, in some embodiments, the medicine storage unit 1 of the present invention includes a medicine storage cylinder 101, which is a cylinder made of a material that is not prone to rust or corrosion and is sealed at one end. A medicine outlet 102 is provided at the axial center of the bottom of the medicine storage cylinder 101, and the diameter of the medicine outlet 102 is smaller than the inner diameter of the medicine storage cylinder 101. Water flows through the medicine outlet 102 and comes into contact with the medicine in the medicine storage cylinder 101, slowly dissolving and releasing the medicine from the bottom. This also prevents the medicine in the medicine storage unit 1 from completely falling into the water through the medicine outlet 102. A connector 103 is provided at the top of the medicine storage cylinder 101, and the outer surface of the connector 103 is provided with external threads. The medicine driving unit 2 is threadedly connected to the medicine storage cylinder 101 through the connector 103, thereby improving the ease of assembly and disassembly between the medicine storage cylinder 101 and the medicine driving unit 2, and thus improving the ease of loading and unloading medicine. The medicine filled inside the medicine storage cylinder 101 is preferably in the form of tablets or cylinders, and the diameter of the medicine is adapted to the inner diameter of the medicine storage cylinder 101 to prevent water from seeping upwards.

[0053] The side surface of the sealing part 3 is completely fitted to the inner wall of the drug storage cylinder 101, which is used to isolate the interior of the drug storage cylinder 101 into upper and lower areas. If the drug driving part 2 is connected to the outside through the drug discharge port 102 after the drug is completely released, it may cause gas leakage and water to enter the device, thereby affecting its buoyancy and making it difficult for subsequent recovery.

[0054] like Figure 4 and Figure 5 As shown, in some embodiments, the inner bottom of the drug storage cylinder 101 of the present invention is provided with multiple drug pads 104, all of which are arranged in a circumferential array around the drug outlet 102. When the drug is placed inside the drug storage cylinder 101, the bottom of the drug is supported by the drug pads 104, thereby leaving a gap between the bottom of the drug and the inner bottom of the drug storage cylinder 101, increasing the contact area between the drug and water. This prevents the edge of the drug bottom from being blocked by the bottom of the drug storage cylinder 101, which would allow water to dissolve the drug only through the drug outlet 102 and cause holes to form in the middle of the drug. When holes form in the middle of the drug, the drug will dissolve outward along the holes, resulting in an increasingly faster release rate of the drug instead of a stable release.

[0055] like Figure 1 - Figure 4 As shown, in some embodiments, the outer surface of the medicine storage cartridge 101 of the present invention is provided with a plurality of device stabilizing plates 105 arranged in a circumferential array. When the device is in a suspended state and there is a current in the water, the device stabilizing plates 105 will push the device stabilizing plates 105 to rotate the entire device, thereby maintaining the device vertical stability through the centrifugal force generated by the rotation of the device. This reduces the possibility of the device tipping over or inverting.

[0056] like Figure 1 and Figure 2 As shown, in some embodiments, each device stabilizing plate 105 of the present invention is a curved plate-shaped body, thereby making the device stabilizing plate 105 easier to be driven by the current. Each device stabilizing plate 105 has a wider top and narrower bottom, and the combined cross-section of all device stabilizing plates 105 is conical. The conical bottom allows the entire device to be more stably vertically positioned in the water, making the contact between the drug and water more stable. Even when the device is floating, the drug outlet 102 can remain in the water, allowing the drug to contact the water and release its medicinal properties.

[0057] like Figure 3 and Figure 6 As shown, in some embodiments, the drug driving part 2 of the present invention includes a connecting flange head 201. The inner wall of the connecting flange head 201 is provided with internal threads, 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 cylinder 101, and the inner wall of the connection is flush with the inner wall to facilitate the vertical movement of the sealing part 3. When the sealing part 3 moves into the interior of the connecting flange head 201, it can also achieve the effect of gas sealing.

[0058] A gas guide tube 202 is provided at the top of the connecting flange 201, and a driving airbag 203 is provided at the upper end of the gas guide tube 202. An injection head 204 is provided at the upper end of the driving airbag 203, through which gas can be injected into the driving airbag 203. A sealing cap 205 is provided on the injection head 204 to prevent air leakage and improve the sealing performance inside the driving airbag 203. The driving airbag 203 is a gas or rubber airbag, which expands after inflation to increase buoyancy. During inflation, the gas applies pressure to the sealing part 3, causing the sealing part 3 to move towards the drug and apply pressure to the drug, keeping the tablets tightly fitted. Simultaneously, when the drug at the bottom is released, it can drive the drug at the top to move downwards towards the drug outlet 102. After deflating, it can retract for easy storage and reduce 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 provided with a plurality of reflective sheets 206 at equal intervals, and the reflective sheets 206 are painted with bright reflective or luminous patterns. This makes the device more conspicuous when floating on the water surface, facilitating its retrieval by personnel. In particular, when the device rotates under the influence of water flow, the intermittently arranged reflective sheets 206 will reflect light intermittently due to the rotation, producing a flashing visual effect and enhancing the warning effect.

[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 several rigid protective members 207, which are lantern-shaped to protect the driving airbag 203. When the driving airbag 203 is inflated, the protective members 207 can limit the maximum expansion of the driving airbag 203, thereby preventing the driving airbag 203 from over-inflating and bursting. At the same time, it can also prevent the driving airbag 203 from failing to sink when fully loaded with medicine due to excessive buoyancy. During use, the expansion coefficient of the driving airbag 203 can be adjusted appropriately according to the density of the medicine to control the floating height of the device in water.

[0061] While preventing the drive airbag 203 from over-inflating, the protective component 207 forms a skeleton that can protect the drive airbag 203 from excessive impact with floating objects in the water when the drive airbag 203 is suspended in the water.

[0062] Each protective element 207 is connected at both ends to the outer surface of the air duct 202 and the air injection head 204, respectively, so that the protective element 207 can be connected to a hard object to obtain stable support and will not deform as the driving airbag 203 expands or contracts.

[0063] like Figure 3 As shown, in some embodiments, the sealing part 3 of the present invention includes a piston plate 301, which is disc-shaped. The outer diameter of the piston plate 301 is equal to the inner diameter of the medicine storage cartridge 101, thereby ensuring that the piston plate 301 can divide the interior of the medicine storage cartridge 101 and ensure good sealing between the two separated spaces. The piston plate 301 can be driven by air pressure or water pressure to move axially along the medicine storage cartridge 101. Under air pressure, the piston plate 301 applies pressure to the drug, ensuring a tight bond between the drugs. During drug release, when the water pressure is greater than the internal pressure of the driving airbag 203, the water pressure will push the piston plate 301 towards the driving airbag 203, causing the gas to concentrate inside the driving airbag 203, making the driving airbag 203 more inflated and increasing buoyancy.

[0064] like Figure 7 As shown, in some embodiments, the piston plate 301 of the present invention is designed with a cavity 302 inside, which is intended to reduce its weight and thus make it easier for air pressure and water pressure to drive the piston plate 301 to move. In addition, the cavity 302 also adds additional buoyancy to the piston plate 301 during the upward movement of the device.

[0065] like Figure 9 As shown below, using potassium permanganate as an example, its release amount at different water temperatures is as follows:

[0066] Table 1

[0067] 5 0 0 5 24 20 5 48 40 5 72 60 5 96 80 5 120 100

[0068] Table 2

[0069] 15 0 0 15 24 30 15 48 60 15 72 85 15 96 100

[0070] Table 3

[0071] 25 0 0 25 24 40 25 48 80 25 72 100

[0072] Table 4

[0073] 35 0 0 35 24 50 35 48 95 35 72 100

[0074] As shown in the graphs above, the drug release rate has a linear relationship with water temperature; the higher the water temperature, the faster the drug is released. It is important to note that the experimental data were measured at a constant temperature, and the water temperature rises slowly from the bottom upwards. Therefore, when the ambient temperature is above 4 degrees Celsius, the actual drug release rate accelerates as the device gradually rises.

[0075] The specific usage process of this invention is as follows:

[0076] Separate the medicine storage cylinder 101 and the connecting flange 201, place the medicine neatly inside the medicine storage cylinder 101 in sequence, then place the piston plate 301 above the medicine inside the medicine storage cylinder 101, and connect the medicine storage cylinder 101 and the connecting flange 201.

[0077] Gas is injected into the drive airbag 203 from the position of the gas injection head 204, causing the drive airbag 203 to expand and seal the gas injection head 204 through the sealing cap 205. At this time, the air pressure will drive the piston plate 301 to compact the drug.

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

[0079] Workers retrieved and recovered the device that had fully released the drug from the water surface for future use.

[0080] In summary, the water purification device for slow-release drugs of the present invention stores drugs in a drug storage section 1, and applies pressure to the sealing section 3 in the drug storage section 1 by setting a drug driving section 2 in the upper part of the inside of the drug storage section 1 and filling it with gas, so that the drug in the drug storage section 1 comes into contact with the water source at the bottom of the inside of the drug storage section 1, so that the water source can only slowly dissolve the exposed drug, thereby achieving the effect of slow-release drug.

[0081] Meanwhile, this device is small in size and low in manufacturing cost, and can be deployed in batches into water bodies at any location. By releasing drugs simultaneously at multiple points, it can significantly improve the diffusion efficiency of drugs.

[0082] This invention fully loads the medicine storage cylinder 101 with medicine, making the weight of the entire device greater than the buoyancy of the inflated drive airbag 203. This allows the entire device to sink to the bottom of the water body. Water enters the medicine storage cylinder 101 through the dispensing port 102, coming into contact with the medicine and gradually dissolving and releasing it. As the medicine in the medicine storage cylinder 101 is gradually consumed and reduced, the buoyancy of the drive airbag 203 causes the entire device to gradually rise, continuously releasing medicine during the ascent, thus achieving multi-level purification of the water body.

[0083] The present invention provides a sealing part 3 inside the medicine storage cylinder 101 and isolates the medicine outlet 102 and the air guide tube 202 through the sealing part 3, thereby maintaining the air pressure in the driving air bag 203 and preventing the gas in the driving air bag 203 from being discharged from the medicine outlet 102 after the medicine in the medicine storage cylinder 101 is consumed, which would cause the entire device to fail to float and result in the loss of the device.

[0084] The present invention provides a plurality of device stabilizing plates 105 arranged in a circumferential array on the outer surface of the drug storage cylinder 101, and the device stabilizing plates 105 are tapered in shape with a wide top and narrow bottom, so that the entire device can stand stably and vertically in the water, thereby improving the stability of drug release.

[0085] At the same time, the device's stabilizing plate 105 interacts with the undercurrent in the water, causing the entire device to rotate vertically. The centrifugal force of the rotation keeps the device vertical, preventing it from tipping over or falling over.

[0086] The present invention provides a protective element 207 on the outside of the driving airbag 203 to limit the maximum expansion of the driving airbag 203, thereby preventing the driving airbag 203 from being damaged by over-inflation and preventing the device from failing to sink when fully loaded with drugs due to over-inflation of the driving airbag 203.

[0087] Meanwhile, the protective component 207 can protect the drive airbag 203 when the entire device is suspended in water, reduce the impact force between the drive airbag 203 and the suspended objects in the water, and extend the service life of the drive airbag 203.

[0088] Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0089] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can 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 those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A water purification device capable of slowly releasing a drug, characterized in that, It includes a drug storage section (1), and a drug driving section (2) is provided at the end of the drug storage section (1). The drug storage section (1) and the drug driving section (2) are detachably connected. The medicine storage part (1) is provided with a sealing part (3) inside. The sealing part (3) can slide inside the medicine storage part (1), and the outer surface of the sealing part (3) is completely in contact with the inner wall of the medicine storage part (1). The external drug is placed between the inner bottom of the drug storage section (1) and the sealing section (3). The drug driving section (2) pressurizes the sealing section (3) by filling it with gas, causing the drug to come into contact with the water source through the bottom of the drug storage section (1) and dissolve and be released. The medicine storage unit (1) includes a medicine storage cylinder (101), a medicine outlet (102) is provided at the bottom axis of the medicine storage cylinder (101), a connector (103) is provided at the top of the medicine storage cylinder (101), and the medicine driving unit (2) is connected to the medicine storage cylinder (101) through the connector (103). The side surface of the sealing part (3) is completely in contact with the inner wall of the medicine storage cylinder (101); The bottom of the medicine storage cylinder (101) is equipped with multiple medicine pads (104), which are evenly distributed in a circular shape with the medicine outlet (102) as the center. The drug driving unit (2) includes a connecting flange (201), the inner diameter of which is equal to the inner diameter of the drug storage cylinder (101), the connecting flange (201) is connected to the connecting head (103), and the inner wall of the connection is flush with the connecting head. The top of the connecting flange (201) is provided with an air guide pipe (202), and the upper end of the air guide pipe (202) is provided with a driving airbag (203). The driving airbag (203) can expand after being inflated and can contract after being deflated. The sealing part (3) includes a piston plate (301), the outer diameter of which is equal to the inner diameter of the medicine storage cylinder (101), and the piston plate (301) can be driven by air pressure or water pressure to move along the axial direction of the medicine storage cylinder (101).

2. The water purification device capable of slowly releasing drugs according to claim 1, characterized in that: The outer surface of the medicine storage cylinder (101) is provided with a circumferential array of multiple device stabilizing plates (105).

3. The water purification device capable of slowly releasing drugs according to claim 2, characterized in that: Each of the device stabilizers (105) is a curved sheet-like body, and the upper and lower ends of each of the device stabilizers (105) are wider at the top and narrower at the bottom; The combined cross section of all the stabilizers (105) of the device is conical.

4. The water purification device capable of slowly releasing drugs according to claim 1, characterized in that: The upper end of the driving airbag (203) is provided with an air injection head (204), and a sealing cap (205) is provided on the air injection head (204).

5. The water purification device capable of slowly releasing drugs according to claim 4, characterized in that: The outer surface of the driving airbag (203) is provided with a plurality of reflective sheets (206) at equal intervals.

6. The water purification device capable of slowly releasing drugs according to claim 5, 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 lantern-shaped; Each of the protective components (207) is connected at both ends to the outer surfaces of the air guide tube (202) and the air injection head (204), respectively.

7. The water purification device capable of slowly releasing drugs according to claim 1, characterized in that: The piston plate (301) has a cavity (302) inside.

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