Device and method for purifying farmland recession water

Abstract

The invention provides a farmland purification recession treatment device which comprises a stirring kettle, a medicine feeding mechanism and a stirring mechanism installed in the stirring kettle, the medicine feeding mechanism comprises a medicine containing box rotating around the stirring kettle, the medicine containing box is filled with powder medicine, and the medicine containing box is driven by a driving motor installed on the stirring kettle; a discharging cover is fixedly connected to the discharging end of the medicine containing box, a sliding baffle capable of moving in a reciprocating mode is installed below the discharging cover, discharging holes are formed in the upper surface of the sliding baffle and the upper surface of the discharging cover, and the positions of the upper discharging hole and the lower discharging hole are staggered. The medicine feeding assembly is arranged on the stirring kettle, the medicine feeding assembly automatically conducts shaking discharging on the medicine powder, the medicine powder is put into the stirring kettle in a dispersed mode, mixing of the medicine in water is facilitated, and the treatment effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a device and method for purifying farmland drain water. Background Art

[0002] Agricultural runoff refers to sewage and liquid waste discharged from the processes of crop cultivation, livestock breeding, food processing, etc. in agricultural production. Farmland runoff specifically refers to the sewage generated in crop cultivation. In order to ensure the normal development of crops, fertilizers are added during the planting process. Part of these fertilizers will be absorbed by the crops, and part will be dissolved by water, resulting in more nitrogen and phosphorus elements in farmland runoff. If discharged directly, it will lead to eutrophication in the water and affect the ecological environment.

[0003] The existing discharged water basically needs to be treated before it can be discharged. The basic steps are filtration, sedimentation, biological treatment, suspended matter filtration and post-treatment. In the post-treatment, nutrients such as nitrogen and phosphorus in the water need to be removed. The existing methods can use ecological treatment to purify the water quality, or add chemicals to the water to generate precipitation and then filter treatment. Among them, the drug treatment method is faster than the ecological treatment.

[0004] Drug treatment is to add chemical agents into sewage in water so that phosphorus reacts with metal ions in the agents to form insoluble phosphate precipitates. When adding the agents, in order to avoid incomplete treatment caused by the agents clumping together in water and being inconvenient to dissolve, it is necessary to add the agents slowly by shaking. Therefore, the present invention arranges a drug applying component on the stirring kettle, and the drug applying component automatically shakes and discharges the drug powder, so that the drug powder is dispersed and put into the stirring kettle, which facilitates the mixing of the agents in water and ensures the treatment effect. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a device and method for purifying farmland drainage water, so as to more accurately solve the problem that the above-mentioned addition requires shaking and slow addition, and avoid incomplete treatment caused by the inconvenient dissolution of the agent when it clumps when it comes into contact with water.

[0006] The present invention is achieved through the following technical solutions:

[0007] The present invention proposes a device for purifying farmland drainage water, comprising a stirring kettle, a medicine applying mechanism and a stirring mechanism installed inside the stirring kettle, wherein the medicine applying mechanism comprises a medicine receiving box rotating around the stirring kettle, and the medicine receiving box is driven by a driving motor installed on the stirring kettle, a discharge end of the medicine receiving box is fixedly connected with a discharge cover, a reciprocating sliding baffle is installed below the discharge cover, discharge holes are provided on the upper surfaces of the sliding baffle and the discharge cover, and the positions of the upper and lower discharge holes are staggered.

[0008] Furthermore, a mounting seat is fixedly connected to the surface of the stirring kettle, a driving motor is fixedly installed on the lower surface of the mounting seat, and an output end of the driving motor extends to the top of the mounting seat and is fixedly connected to a driving gear, the upper surface of the mounting seat is rotatably mounted on a rotating ring on the upper surface of the mounting seat through a bearing seat, the surface of the rotating ring is fixedly connected to a gear ring meshing with the surface of the driving gear, the upper surface of the rotating ring is fixedly connected to an L-shaped seat, and the medicine receiving box is installed on the upper surface of the L-shaped seat.

[0009] Furthermore, a slide groove is provided on the inner ring surface of the mixing kettle, a plurality of semicircular blocks are fixedly connected to the inner wall of the slide groove, a side of the sliding baffle facing the slide groove is fixedly connected to an arc block extending into the interior of the slide groove, an upper surface of the sliding baffle is fixedly connected to an L-shaped support block, a surface of the discharge cover is fixedly connected to a grooved seat, a bent end of the L-shaped support block is located in the groove of the grooved seat, and a return spring is fixedly connected to the opposite surface of the L-shaped support block and the grooved seat.

[0010] Furthermore, the stirring mechanism includes a stirring motor installed in a stirring kettle, a mounting plate is fixedly connected to the inner wall of the stirring kettle, a sleeve is fixedly connected to the lower surface of the mounting plate, the output end of the stirring motor extends to the interior of the sleeve and is fixedly connected to a limiting block, a displacement tube is sleeved on the surface of the limiting block, a stirring rod is fixedly connected to the bottom end of the displacement tube, a limiting protrusion is fixedly connected to the surface of the displacement tube, an oblique annular groove is provided on the inner annular surface of the sleeve, the limiting protrusion is located inside the oblique annular groove, and the center line of the output shaft of the stirring motor is in the same straight line as the center axis of the sleeve.

[0011] Furthermore, the slide groove is located above the mounting plate, and no semicircular block is installed at the position where the slide groove is located directly above the mounting plate.

[0012] Furthermore, a plurality of guide strips for guiding the powder medicine are fixedly connected to the bottom of the discharge cover.

[0013] Furthermore, the method applied to the above-mentioned farmland drainage treatment device comprises the following steps:

[0014] Step 1: Add water once, inject the retreated water into the mixing tank, and ensure that the water level is at half of the mixing tank.

[0015] Step 2: Stir once, and use the stirring mechanism to stir the retreated water to make it flow.

[0016] Step 3: Add medicine, make sure the medicine box is located directly above the mounting plate, add an appropriate amount of powder medicine into the medicine box, and during the stirring process in step 2, drive the medicine box to rotate through the driving motor to evenly apply the medicine on the retreating surface. Stop adding medicine after the medicine is completely added, and continue stirring to ensure that the medicine is dissolved.

[0017] Step 4: Secondary water injection, continue to add retreat water to the stirring tank, so that the retreat water fills the stirring tank.

[0018] Step 5: Secondary stirring: Stirring is performed during the secondary water injection process, and the stirring time is 20 to 30 minutes.

[0019] Beneficial effects of the present invention:

[0020] 1. The medicine receiving box proposed in the present invention is used to receive powder medicines, and the receiving box is driven by a driving motor to rotate around the stirring kettle. During the rotation of the receiving box, the sliding baffle moves back and forth under the design of the semicircular block, the arc block, the return spring, the grooved seat and the L-shaped support block, so that the upper and lower discharge holes overlap and separate back and forth, so that the powder medicine is scattered around the circumference into the stirring kettle, so that the device can shake off and discharge the medicine, which is convenient for adding the medicine.

[0021] 2. The stirring mechanism proposed in the present invention drives the limiting block to rotate through the stirring motor, thereby rotating the displacement tube. Under the limitation of the limiting protrusion and the oblique annular groove, the stirring rod can be stirred up and down to improve the stirring efficiency.

[0022] 3. The guide strips proposed in the present invention are arranged around the upper feeding hole, and the inclined surface of the guide strips can ensure that the powder medicine falls smoothly through the feeding hole.

[0023] 4. The powder medicine in the holding box of the present invention falls through the discharge hole. For the upward water mist generated during the stirring process, the back and forth movement of the sliding baffle can largely prevent the water mist from entering the discharge hole of the discharge cover, thereby preventing the powder medicine from absorbing water and forming large lumps.

[0024] 5. In the method of use proposed by the present invention, during the first stirring, the agent has just entered the sewage and is only preliminarily mixed with the sewage. Due to the complex composition of the sewage, there may be density differences, viscosity differences, etc. It is difficult to disperse the additive completely and evenly in the entire sewage system with one stirring. By using a second stirring, the mixing condition after the first stirring can be optimized. By injecting water and stirring again, the local uneven state that has been formed can be broken, so that the agent can be more evenly distributed in the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of a device for purifying farmland drainage water according to the present invention;

[0026] Figure 2 It is a schematic diagram of the interior of the stirring kettle of the farmland drainage purification device of the present invention from a first perspective;

[0027] Figure 3 This is a schematic diagram of the interior of the sleeve of the farmland drainage purification device of the present invention;

[0028] Figure 4It is a schematic diagram of the interior of the stirring kettle of the farmland drainage purification device of the present invention from a second viewing angle;

[0029] Figure 5 The farmland water purification device of the present invention Figure 4 The enlarged schematic diagram at A in the middle;

[0030] Figure 6 This is a schematic diagram of the interior of the discharge cover of the farmland water purification and treatment device of the present invention;

[0031] Figure 7 The present invention is a schematic diagram of the use process of the device for purifying farmland drainage water.

[0032] The reference numerals are as follows:

[0033] 1 agitating kettle, 2 a mounting seat, 3 a rotating ring, 4 a driving motor, 5 a medicine box, 6 a discharging cover, 7 a sliding baffle, 8 a guide bar, 9 an L-shaped supporting block, 10 a grooved seat, 11 a return spring, 12 a semicircular block, 13 an arc surface block, 14 agitating motor, 15 a limiting block, 16 a sleeve, 17 a displacement tube, 18 a limiting protrusion, 19 an oblique annular groove, and 20 a stirring rod. DETAILED DESCRIPTION

[0034] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0035] Please refer to Figure 1 - Figure 6 The present invention provides a device for purifying farmland drainage water, comprising a stirring tank 1, the stirring tank 1 is used for mixing drainage water with liquid medicine, and a medicine applying mechanism is installed on the surface of the stirring tank 1.

[0036] The medicine feeding mechanism includes a medicine receiving box 5, the interior of the medicine receiving box 5 is used to fill powder medicine, and a discharge cover 6 is installed at the discharge of the medicine receiving box 5. A discharge port is provided on the lower surface of the medicine receiving box 5, and the surface of the discharge cover 6 is fixedly connected to the inner wall of the discharge port. The powder medicine is added to the stirring kettle 1 through the discharge cover 6 to mix with the water in the stirring kettle 1, and the nutrients such as nitrogen and phosphorus in the withdrawn water are removed. A reciprocating sliding baffle 7 is installed below the discharge cover 6, and the sliding baffle 7 and the opposite surfaces of the discharge cover 6 are provided with discharge holes, and the upper and lower discharge holes are staggered with each other. When the lower discharge hole is staggered with the upper discharge hole, the sliding baffle 7 blocks the upper discharge hole, so as to block the powder medicine and avoid discharge. When the lower discharge hole is aligned with the lower discharge hole, the powder medicine will fall through the discharge hole to feed the medicine.

[0037] The inner bottom wall of the discharge cover 6 is fixedly connected with a guide bar 8, and the guide bar 8 is provided with an inclined surface, which can guide the powder medicine to the discharge hole to ensure the discharge of the powder medicine.

[0038] A mounting base 2 is fixedly connected to the surface of the stirring kettle 1, a rotating ring 3 is rotatably connected to the upper surface of the mounting base 2, an L-shaped base is fixedly connected to the upper surface of the rotating ring 3, a medicine receiving box 5 is fixedly mounted on the upper surface of the L-shaped base, a driving motor 4 is fixedly connected to the lower surface of the mounting base 2, an output end of the driving motor 4 extends to the upper surface of the mounting base 2 and is fixedly connected to a driving gear, a gear ring meshing with the driving gear is fixedly connected to the surface of the rotating ring 3, and the driving motor 4 can drive the rotating ring 3 to rotate via the driving gear and the gear ring, thereby driving the medicine receiving box 5 on the rotating ring 3 to rotate, so that the medicine receiving box 5 can move in a circle above the stirring kettle 1, so that the powdered medicine can be evenly spread above the water.

[0039] An L-shaped support block 9 is fixedly connected to the upper surface of the sliding baffle 7, a grooved seat 10 is fixedly connected to the surface of the discharge cover 6, the L-shaped support block 9 is slidably installed inside the grooved seat 10, a return spring 11 is fixedly connected to the opposite surface of the L-shaped support block 9 and the grooved seat 10, a slide groove is provided on the inner annular surface of the stirring kettle 1, a plurality of semicircular blocks 12 are fixedly connected to the inner wall of the slide groove, an arc block 13 extending to the inside of the slide groove is fixedly connected to the surface of the sliding baffle 7, and the sliding baffle 7 will rotate with the medicine receiving box 5. At this time, the arc surface of the arc block 13 overlaps with the arc surface of the semicircular block 12, and the arc block 13 pushes the sliding baffle 7 to move, so that the upper and lower feeding holes are aligned, and medicine is fed, and when the arc block 13 moves to the gap between the adjacent semicircular blocks 12, the elastic force of the reset spring 11 pushes the L-shaped support block 9 to drive the sliding baffle 7 to move back. At this time, the upper and lower feeding holes are staggered to block the feeding, and the feeding holes are opened and closed reciprocatingly, which can achieve a small amount of multiple feeding, and avoid excessive feeding of powder medicine at one time.

[0040] A stirring mechanism is installed inside the stirring kettle 1, and the stirring mechanism includes a stirring motor 14 installed in the stirring kettle 1. The inner annular surface of the stirring kettle 1 is fixedly connected with a mounting plate, and the stirring motor 14 is fixedly installed on the upper surface of the mounting plate. A stirring rod 20 is installed at the output end of the stirring motor 14, and the stirring end of the stirring rod 20 extends into the interior of the stirring kettle 1. The powdered medicine and the dehydrated water can be mixed by the driving of the stirring motor 14.

[0041] The stirring end of the stirring motor 14 extends to the bottom of the mounting plate and is fixedly connected to the limiting block 15. The lower surface of the mounting plate is fixedly connected with a sleeve 16. The surface of the limiting block 15 is sleeved with a displacement tube 17. The surface of the displacement tube 17 is fixedly connected with a limiting protrusion 18. The inner ring surface of the sleeve 16 is provided with an oblique annular groove 19. The limiting protrusion 18 is located inside the oblique annular groove 19. The stirring motor 14 can drive the displacement tube 17 to rotate by driving the limiting block 15 to rotate, and the limiting protrusion 18 on the displacement tube 17 will slide in the oblique annular groove 19, so that the displacement tube 17 can move up and down. At this time, the displacement tube 17 can realize up and down displacement rotation. The top end of the stirring rod 20 is fixedly connected to the bottom end of the displacement tube 17. The stirring rod 20 rotates while following the displacement tube 17 to move up and down, so that the retreated water in the stirring kettle 1 can be continuously churned, ensuring that the powdered medicine can be stirred to the inside of the retreated water for easy mixing.

[0042] When the stirring motor 14 drives the stirring rod 20 to stir up and down to make the water churn, the flow of water hits the stirring kettle 1 to produce a small amount of water mist. Since the water mist floats, the sliding baffle 7 can prevent the floating water mist from directly floating to the inside of the holding box 5, causing the powder medicine inside the holding box 5 to become damp and agglomerate. In addition, the discharge hole on the sliding baffle 7 and the discharge hole on the discharge cover 6 are in a state of active dislocation. At this time, the upper and lower discharge holes are not always kept unobstructed, and the amount of water mist entering the discharge hole is also reduced.

[0043] When a small amount of water mist adheres to the inner wall of the discharge hole, the powder medicine falling through the discharge hole will also absorb the water droplets, and with the movement of the containing box 5 and the repeated back and forth movement of the sliding baffle 7, the discharge hole will be in a vibrating state. With the vibration of the discharge hole and the falling of the powder medicine above, a small amount of agglomerated powder medicine will be discharged through the discharge hole.

[0044] A small amount of agglomerated powder medicine is heavier than other powder medicines. During the stirring process of the device, the water mist lift generated may push the lighter powder medicine to move upward, causing the powder medicine feeding position to shift. However, a small amount of agglomerated powder medicine is heavier and will not be blown up, thus ensuring the accurate falling of the medicine. Since the reciprocating movement of the sliding baffle 7 drives the vibration frequency of the containing box 5 to be faster, the water mist entering the feeding hole is limited, resulting in smaller lumps and will not affect the normal stirring.

[0045] The slide groove is located above the mounting plate, and the semicircular block 12 is not installed at the position where the slide groove is located directly above the mounting plate to ensure that when the arc block 13 rotates to directly above the mounting plate, it will not be pushed by the semicircular block 12, avoiding the alignment of the upper and lower feeding holes, thereby avoiding the waste of powder medicine caused by feeding the powder medicine onto the mounting plate.

[0046] In the device, a driving motor 4 is provided to drive the receiving box 5 to rotate, so that the receiving box 5 performs a circular motion on the stirring kettle 1, and as the receiving box 5 moves, the sliding baffle 7 is driven to move back and forth through the back and forth pushing between the arc block 13 and the semicircular block 12, so that the sliding baffle 7 overlaps with the discharge hole on the discharge cover 6 back and forth, and the stirring mechanism drives the shaking of the entire device, so that the powder medicine in the receiving box 5 can be discharged in a dispersed manner, avoiding the phenomenon that too much material is discharged at one time, resulting in the powder medicine not being able to fully dissolve into blocks, resulting in inconvenience in subsequent mixing, and improving the stirring efficiency.

[0047] Combined with Figure 7 , the method for using the device for purifying farmland drainage water is as follows:

[0048] Step 1: inject water into the mixing tank 1 at one time, and ensure that the water level is at one-half of the mixing tank 1.

[0049] Step 2: Stir once, and use the stirring motor 14 to drive the stirring rod 20 to stir up and down to stir the retreated water.

[0050] Step 3: Add medicine, ensure that the medicine box 5 is located directly above the mounting plate, add an appropriate amount of powder medicine into the medicine box 5, the powder medicine is aluminum salt, iron salt and calcium salt, etc., add a sufficient amount of powder medicine into the medicine box 5 according to the dosing ratio and the holding capacity of the stirring tank 1, (commonly used aluminum salts include aluminum sulfate, polyaluminum chloride, etc.). When removing phosphorus, it is generally added according to the molar ratio of aluminum ion to phosphate ion of 1.5-3:1. For example, for sewage with a total phosphorus concentration of 5 mg / L, if polyaluminum chloride is used, its effective aluminum content is about 27%. It can be calculated that about 0.03-0.06g of polyaluminum chloride is needed per liter of sewage. Common iron salts include ferric chloride, ferrous sulfate, polyferric sulfate, etc. Iron salts and phosphate ions The reaction of the ions is relatively complicated, and the molar ratio of iron ions to phosphate ions is generally about 1.8-3.5:1. Taking ferric chloride as an example, if its effective iron content is about 20%, for sewage with a total phosphorus concentration of 5mg / L, about 0.04-0.08g of ferric chloride needs to be added per liter of sewage. Calcium salt phosphorus removal is mainly achieved by forming calcium phosphate precipitation, and commonly used calcium salts are calcium hydroxide, calcium chloride, etc. The molar ratio of calcium and phosphorus is generally between 2.5:1. In practical applications, the amount of calcium hydroxide added is about 100-500mg / L) During the stirring process of step 2, the medicine receiving box 5 is driven by the driving motor 4 to rotate and evenly apply the medicine on the retreating surface. After the medicine is completely added, the addition of the medicine is stopped, and stirring is continued to ensure that the medicine is dissolved.

[0051] Step 4: Secondary water injection, continue to add backwater into the stirring tank 1 to fill the stirring tank 1 with backwater. The highest water level of the backwater cannot be higher than the bottom of the sleeve 16 to prevent the flocs generated after the backwater reaction from getting stuck in the oblique annular groove 19.

[0052] Step 5: Secondary stirring: Stirring is performed during the secondary water injection process, and the stirring time is 20 to 30 minutes.

[0053] In the above-mentioned method of use, the advantage of the secondary stirring method over the one-time water injection stirring and mixing is that during the first stirring, the agent has just entered the sewage and is only initially mixed with the sewage. Due to the complex composition of the sewage, there may be density differences, viscosity differences, etc., and it is difficult to disperse the additive completely and evenly in the entire sewage system with one stirring. In the secondary stirring, the mixing condition after the first stirring can be optimized. By injecting water again and stirring, the already formed local uneven state can be broken, so that the agent can be more evenly distributed in the sewage.

[0054] And in the secondary stirring, during the water injection process, the water will impact the sewage that has been stirred. The impact force will push the powdered medicine in the water to move in a chaotic state, and can disperse the powdered medicine in the water to prevent the powdered medicine that enters the water from gathering.

[0055] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A device for purifying farmland drainage, comprising a stirring tank (1), a drug-applying mechanism and a stirring mechanism installed inside the stirring tank (1), characterized in that: The medicine feeding mechanism comprises a medicine receiving box (5) rotating around the stirring kettle (1), and the medicine receiving box (5) is driven by a driving motor (4) installed on the stirring kettle (1), a discharge end of the medicine receiving box (5) is fixedly connected to a discharge cover (6), a reciprocating sliding baffle (7) is installed below the discharge cover (6), and discharge holes are provided on the upper surfaces of the sliding baffle (7) and the discharge cover (6), and the positions of the upper and lower discharge holes are staggered.

2. The device for purifying farmland water discharge according to claim 1, characterized in that: The surface of the stirring kettle (1) is fixedly connected to a mounting seat (2), a driving motor (4) is fixedly mounted on the lower surface of the mounting seat (2), and an output end of the driving motor (4) extends to the top of the mounting seat (2) and is fixedly connected to a driving gear, the upper surface of the mounting seat (2) is rotatably mounted on a rotating ring (3) on the upper surface of the mounting seat (2) through a bearing seat, and the surface of the rotating ring (3) is fixedly connected to a gear ring that meshes with the surface of the driving gear.

3. The device for purifying farmland water discharge according to claim 2, characterized in that: The upper surface of the rotating ring (3) is fixedly connected with an L-shaped seat, and the medicine receiving box (5) is installed on the upper surface of the L-shaped seat.

4. The device for purifying farmland water discharge according to claim 3, characterized in that: The inner annular surface of the stirring kettle (1) is provided with a slide groove, the inner wall of the slide groove is fixedly connected with a plurality of semicircular blocks (12), and the sliding baffle (7) is fixedly connected with a curved block (13) extending into the interior of the slide groove on one side facing the slide groove.

5. The device for purifying farmland water discharge according to claim 4, characterized in that: An L-shaped support block (9) is fixedly connected to the upper surface of the sliding baffle (7), a grooved seat (10) is fixedly connected to the surface of the discharge cover (6), a bent end of the L-shaped support block (9) is located in a groove of the grooved seat (10), and a return spring (11) is fixedly connected to the opposite surface of the L-shaped support block (9) and the grooved seat (10).

6. The device for purifying farmland water discharge according to claim 1, characterized in that: The stirring mechanism comprises a stirring motor (14) installed in a stirring kettle (1); a mounting plate is fixedly connected to the inner wall of the stirring kettle (1); a sleeve (16) is fixedly connected to the lower surface of the mounting plate; an output end of the stirring motor (14) extends to the inside of the sleeve (16) and is fixedly connected to a limiting block (15); a displacement tube (17) is sleeved on the surface of the limiting block (15); a stirring rod (20) is fixedly connected to the bottom end of the displacement tube (17); a limiting protrusion (18) is fixedly connected to the surface of the displacement tube (17); an oblique annular groove (19) is provided on the inner annular surface of the sleeve (16); and the limiting protrusion (18) is located inside the oblique annular groove (19).

7. The device for purifying farmland water discharge according to claim 6, characterized in that: The center line of the output shaft of the stirring motor (14) and the center axis of the sleeve (16) are in the same straight line.

8. The device for purifying farmland drainage according to claim 4 or 6, characterized in that: The slide groove is located above the mounting plate, and the slide groove is located directly above the mounting plate without a semicircular block (12).

9. The device for purifying farmland water discharge according to claim 1, characterized in that: A plurality of guide strips (8) for guiding powder medicines are fixedly connected to the bottom of the discharge cover (6).

10. A method for using a device for purifying farmland drainage, characterized in that: The specific steps are: Step 1: inject water into the stirring tank (1) at one time, and ensure that the water level is at one-half of the stirring tank (1); Step 2: Stir once, using the stirring mechanism to stir the retreated water so that the retreated water is in a flowing state; Step 3: Adding medicine, ensuring that the medicine receiving box (5) is located directly above the mounting plate, adding an appropriate amount of powder medicine into the medicine receiving box (5), and during the stirring process in step 2, driving the medicine receiving box (5) to rotate by the driving motor (4) to evenly apply medicine on the water retreat surface, stopping adding medicine after the medicine is completely added, and continuing stirring to ensure that the medicine is dissolved; Step 4: Secondary water injection, continue to add the retreated water into the stirring tank (1) until the retreated water fills up the stirring tank (1); Step 5: Secondary stirring: Stirring is performed during the secondary water injection process, and the stirring time is 20 to 30 minutes.

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