Chemical injection treatment device and treatment method for circulating cooling water

Abstract

The invention relates to the field of agent treatment of circulating cooling water, in particular to an agent injection treatment device and method for circulating cooling water, the agent injection treatment device comprises a treatment box, a treatment water tank is mounted below the treatment box, and water inlet pipes are symmetrically connected to the treatment water tank in a penetrating mode. By changing the diameters of four groups of semi-arc-shaped plates, the transmission ratio is changed, so that the rotating speeds of all groups of threaded shafts are different, corresponding adjustment is performed according to the use requirements of chemicals, stirring blades can stir cooling circulating water and the chemicals during chemical feeding, and the chemical feeding efficiency is improved. Circulating cooling water is circularly conveyed into the treatment water tank through the water inlet pipe and the water outlet pipe for flowing chemical feeding, the situation that chemicals are injected unevenly is avoided, continuous chemical feeding work of the circulating cooling water can be conducted in this way, the chemical feeding amount of each group of chemicals can be controlled while chemical feeding is conducted, and therefore the chemical treatment effect is improved; the medicine feeding mode can also ensure that the medicine can be uniformly injected into the circulating cooling water.

Description

Technical Field

[0001] The invention relates to the field of circulating cooling water chemical treatment, and in particular to a chemical injection treatment device and a treatment method for circulating cooling water. Background Art

[0002] Cooling water accounts for 70% to 80% of industrial water. To save water, we must first recycle industrial cooling water to reduce clean water consumption and wastewater discharge. In order to ensure production safety, protect the environment, save energy and save water, the requirements for industrial circulating water are getting higher and higher. In order to reduce corrosion and scaling of system equipment, improve the heat exchange efficiency of cooling equipment, and ensure the stability and continuity of the operation of the cooling water system, it is necessary to add appropriate amounts of corrosion inhibitors, scale inhibitors, bactericides, acids and alkalis to the circulating cooling water system, and continuously and stably monitor and control the system.

[0003] The Chinese patent application with the announcement number CN220223687U, an industrial circulating water cooling system dosing device, includes a base frame, a circulating water pool, a sewage collection pool, a sewage collection tank, a scraping device, a leak plate, a bracket, a stirring spraying device and a liquid supply device, the circulating water pool and the sewage collection pool are both arranged on the base frame and are connected to each other, the sewage collection tank is located at one side of the bottom of the sewage collection pool, the scraping device is arranged in the sewage collection pool, the leak plate is arranged at the connection between the circulating water pool and the sewage collection pool, the bracket is arranged on the circulating water pool, the stirring spraying device is arranged on the bracket and rotates in the circulating water pool, and the liquid supply device is arranged on the bracket and is connected to the stirring spraying device. The utility model belongs to the technical field of industrial circulating water treatment, and specifically refers to an industrial circulating water cooling system dosing device that can evenly spray defoaming agent on foam water in a circulating water pool in a cooling system and can timely remove sediment in the circulating pool.

[0004] Conventional manual dosing is not only labor-intensive and inefficient, but also increases the risk of malfunctions caused by human error. In addition, the continuity and stability of dosing cannot be guaranteed. Therefore, the existing dosing method generally adopts mechanical dosing. However, with the development of science and technology, the types of medicines will increase, and the method of dosing will change. For example, when multiple medicines need to be added, there are certain requirements for the amount of each medicine added. Although the mechanical dosing method can be automatically added, the amount required for each medicine cannot be accurately controlled, which affects the effect of the medicine addition. In addition, since the circulating cooling water circulates continuously, if the circulating cooling water in the flowing use state is only used for dosing in one place, uneven dosing will occur.

[0005] Therefore, it is necessary to invent a reagent injection treatment device and a treatment method for circulating cooling water to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a circulating cooling water reagent injection treatment device and treatment method, by changing the diameter of the arc formed by four groups of semi-arc plates, the transmission ratio is changed as a whole, so that the rotation speed of each group of threaded shafts is different, and corresponding adjustments are made according to the use requirements of different reagents, and by circulating cooling water into a treatment water tank for flowing drug delivery, the uniformity of drug delivery is ensured, so as to solve the problem in the prior art that the reagent cannot be evenly added due to the particularity of the cooling circulating water and the special characteristics of the reagent.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a reagent injection treatment device for circulating cooling water, comprising a treatment box, a treatment water tank is installed below the treatment box, water inlet pipes are symmetrically connected to the treatment water tank, and two groups of water inlet pipes are connected to the output end pipeline of the cooling circulating water storage device after use, a water outlet pipe is connected below the treatment water tank, and the water outlet pipe is connected to the pipeline of the cooling circulating water storage device before use, four groups of lower medicine hoppers are installed above the treatment box, and a drug delivery pipe is connected below each group of the lower medicine hoppers, and the bottom of the drug delivery pipe is in the same vertical horizontal plane as the top of the treatment water tank;

[0008] A drug dispensing adjustment component is arranged in the drug dispensing bucket and is used to control the drug dispensing speed in each group of drug dispensing buckets;

[0009] The driving component is arranged above the processing box and is used to drive the medicine dispensing regulating component to work.

[0010] As a preferred solution of the present invention, the drug dispensing adjustment component includes a threaded shaft, which is rotatably connected in each group of drug delivery tubes, and the top of the threaded shaft is penetrated through the drug dispensing hopper.

[0011] As a preferred solution of the present invention, a fixing frame is installed above the lower medicine hopper, a limiting plate is installed above the fixing frame, an annular frame is slidably connected inside the limiting plate, and the annular frame is axially connected to the threaded shaft below.

[0012] As a preferred solution of the present invention, a cross connecting frame is installed above the annular frame, a main bevel gear is rotatably connected inside the cross connecting frame, a knob is installed above the cross connecting frame, and the knob is axially connected to the main bevel gear.

[0013] As a preferred solution of the present invention, four groups of internal threaded barrels are cross-distributed and connected through the inner wall of the cross connecting frame, one side of the four groups of internal threaded barrels is installed with a secondary bevel gear, and the four groups of secondary bevel gears are meshed with the main bevel gears, screws are threaded in the four groups of internal threaded barrels, one side of the four groups of screws is rotatably connected with a semi-arc plate, and the four groups of semi-arc plates form a ring, and a guide block is installed under the semi-arc plate.

[0014] As a preferred solution of the present invention, a guide groove is provided in the annular frame, and the guide groove is slidably connected to the guide block, guide rods are installed on the inner sides of the four groups of semi-arc plates, and the guide rods are slidably connected to the cross connecting frame.

[0015] As a preferred solution of the present invention, the driving assembly includes a motor, which is installed above the processing box. A rotating shaft is installed at the output end of the processing box, and the lower part of the rotating shaft is rotatably connected to the processing water tank, and the connection between the rotating shaft and the water outlet pipe is located in a vertical horizontal position. A plurality of groups of stirring blades are sleeved and fixed on the rotating shaft, and the stirring blades are arranged in the processing water tank.

[0016] As a preferred solution of the present invention, two sets of pulleys are sleeved and fixed on the rotating shaft, and the two sets of pulleys are arranged above the processing box, one set of the pulleys is fitted with a belt, and the belt is simultaneously fitted with the four sets of semi-arc plates in the two sets of lower medicine buckets, and the belt of the lower pulley is fitted with the four sets of semi-arc plates in the other two sets of lower medicine buckets, spring telescopic rods are symmetrically installed above the processing box, and slide rails are installed at the output ends of the two sets of spring telescopic rods, and the inside of the slide rails are respectively fitted with the two sets of belts.

[0017] A method for treating circulating cooling water by injecting a reagent, comprising the above-mentioned circulating cooling water by injecting a reagent, wherein the specific treatment steps are as follows:

[0018] S1: By turning the knob, the main bevel gear drives multiple sets of auxiliary bevel gears to rotate simultaneously, so that the internal threaded barrel drives the screw to move, so that the four sets of semi-arc plates move simultaneously, thereby changing the diameter of the arc formed by the four sets of semi-arc plates;

[0019] S2: The motor drives the belt to move, so that the belt drives the arc formed by the four sets of semi-arc plates to rotate, so that the threaded shaft below rotates, so as to evenly transport the medicine in the lower medicine hopper;

[0020] S3: Since the diameters of the four groups of semi-arc plates in each group of drug dispensing buckets are adjusted, the rotation speed thereof is changed, thereby achieving a change in the drug dispensing speed of each group of drug dispensing buckets.

[0021] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows:

[0022] By changing the diameters of the four groups of semi-arc plates, the time required for them to rotate one circle is changed. This method can make the rotation speed of each group of threaded shafts different, so that corresponding adjustments can be made according to the requirements of the use of the medicine. While the motor rotates to apply the medicine, the stirring blades will stir the cooling circulating water and the medicine, and the circulating cooling water will be circulated to the treatment water tank through the water inlet pipe and the water outlet pipe for flowing medicine application, thereby avoiding the occurrence of uneven injection of the medicine. In this way, continuous circulating cooling water medicine application can be carried out, and the amount of each group of medicine applied can be controlled while applying the medicine, thereby improving the effect of the medicine treatment. This method of applying the medicine can also ensure that the medicine can be evenly injected into the circulating cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the layout structure of the turntable of the present invention;

[0026] Figure 3 It is a schematic diagram of the planing structure of the processing box of the present invention;

[0027] Figure 4 It is a schematic diagram of the connection structure of the treatment water tank and the water outlet pipe of the present invention;

[0028] Figure 5 It is a schematic diagram of the medicine dispensing bucket structure of the present invention;

[0029] Figure 6 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0030] Figure 7 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0031] Figure 8 For the present invention Figure 5 Enlarged structural diagram at point C in the middle.

[0032] Description of reference numerals:

[0033] 001, treatment box; 101, treatment water tank; 102, water inlet pipe; 103, water outlet pipe; 104, medicine hopper; 105, medicine delivery tube; 002, medicine adjustment assembly; 201, threaded shaft; 202, fixed frame; 203, limit plate; 204, ring frame; 205, cross connecting frame; 206, main bevel gear; 207, knob; 208, internal threaded cylinder; 209, secondary bevel gear; 210, screw; 211, semi-arc plate; 212, guide block; 213, guide groove; 214, guide rod; 003, drive assembly; 301, motor; 302, rotating shaft; 303, stirring blade; 304, pulley; 305, belt; 306, spring telescopic rod; 307, slide rail. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] The present invention provides Figure 1-8 A reagent injection treatment device for circulating cooling water shown in the figure comprises a treatment box 001, a treatment water tank 101 is installed below the treatment box 001, water inlet pipes 102 are symmetrically connected to the treatment water tank 101, and two groups of water inlet pipes 102 are connected to the output end pipeline of the cooling circulating water storage device after use, a water outlet pipe 103 is connected to the bottom of the treatment water tank 101, and the water outlet pipe 103 is connected to the pipeline of the cooling circulating water storage device before use, four groups of lower medicine hoppers 104 are installed above the treatment box 001, and a drug delivery pipe 105 is connected to the bottom of each group of lower medicine hoppers 104, and the bottom of the drug delivery pipe 105 is in the same vertical horizontal plane as the top of the treatment water tank 101;

[0036] The medicine can be stored in the lower medicine hopper 104 and transported to the treatment water tank 101 through the medicine delivery tube 105. At the same time, the water inlet pipe 102 can transport the cooling circulating water that needs to be treated with the medicine to the treatment water tank 101. After the treatment is completed, it is transported out through the water outlet pipe 103, so that the medicine can be continuously treated while coordinating the circulation cooling of the cooling circulating water.

[0037] The drug dispensing adjustment component 002 is disposed in the drug dispensing bucket 104 and is used to control the drug dispensing speed in each group of drug dispensing buckets 104;

[0038] The driving component 003 is arranged above the processing box 001 and is used to drive the drug dispensing adjustment component 002 to work.

[0039] Furthermore, in the above structure, the drug dispensing adjustment component 002 includes a threaded shaft 201 , which is rotatably connected in each group of drug delivery tubes 105 , and the threaded shaft 201 is arranged to penetrate the drug dispensing hopper 104 .

[0040] By rotating the threaded shaft 201 , the medicine in the medicine feeding hopper 104 can be evenly delivered to the medicine delivery tube 105 , thereby achieving the effect of even medicine feeding.

[0041] Furthermore, in the above structure, a fixing frame 202 is installed above the lower medicine hopper 104, a limiting plate 203 is installed above the fixing frame 202, an annular frame 204 is slidably connected inside the limiting plate 203, and the annular frame 204 is axially connected to the threaded shaft 201 below.

[0042] Through the sliding connection between the limiting plate 203 and the annular frame 204 , the annular frame 204 can stably rotate inside the limiting plate 203 , thereby driving the threaded shaft 201 below to rotate.

[0043] Furthermore, in the above structure, a cross connecting frame 205 is installed above the annular frame 204 , a main bevel gear 206 is rotatably connected inside the cross connecting frame 205 , a knob 207 is installed above the cross connecting frame 205 , and the knob 207 is axially connected to the main bevel gear 206 .

[0044] The main bevel gear 206 can be driven to rotate in the cross connection frame 205 by the knob 207 .

[0045] Furthermore, in the above structure, four groups of internal threaded tubes 208 are cross-distributed and connected through the inner wall of the cross connecting frame 205, a secondary bevel gear 209 is installed on one side of the four groups of internal threaded tubes 208, and the four groups of secondary bevel gears 209 are meshed with the main bevel gear 206, and screws 210 are threaded inside the four groups of internal threaded tubes 208. One side of the four groups of screws 210 is rotatably connected with a semi-arc plate 211, and the four groups of semi-arc plates 211 form a ring, and a guide block 212 is installed below the semi-arc plate 211.

[0046] By rotating the main bevel gear 206, four sets of secondary bevel gears 209 can be driven to rotate at the same time, so that the four sets of internal threaded barrels 208 rotate at the same time and push the screw 210 to move. At this time, the semi-arc plate 211 will move. In this way, the moving distances of the four sets of semi-arc plates 211 can be ensured to be the same, thereby ensuring the curvature formed by the four sets of semi-arc plates 211.

[0047] Furthermore, in the above structure, a guide groove 213 is provided in the annular frame 204 , and the guide groove 213 is slidably connected to the guide block 212 , a guide rod 214 is installed inside the four groups of semi-arc plates 211 , and the guide rod 214 is slidably connected to the cross connecting frame 205 .

[0048] The guide block 212 slides in the guide groove 213 , thereby ensuring that the sliding position of the semi-arc plate 211 is limited, and the arrangement of the guide rod 214 can further limit the sliding of the semi-arc plate 211 .

[0049] Furthermore, in the above structure, the driving component 003 includes a motor 301, which is installed above the processing box 001. A rotating shaft 302 is installed at the output end of the processing box 001, and the lower part of the rotating shaft 302 is rotatably connected to the processing water tank 101, and the connection between the rotating shaft 302 and the water outlet pipe 103 is located in a vertical horizontal position, and a plurality of groups of stirring blades 303 are sleeved and fixed on the rotating shaft 302, and the stirring blades 303 are arranged in the processing water tank 101.

[0050] The motor 301 can drive the plurality of stirring blades 303 to rotate through the rotating shaft 302, so that the reagent can be fully mixed with the circulating cooling water in the treatment water tank 101, thereby improving the mixing efficiency and effect of the reagent.

[0051] Furthermore, in the above structure, two sets of pulleys 304 are sleeved and fixed on the rotating shaft 302, and the two sets of pulleys 304 are arranged above the processing box 001, and a belt 305 is fitted on one set of pulleys 304, and the belt 305 is simultaneously fitted with the four sets of semi-arc plates 211 in the two sets of lower medicine buckets 104, and the belt 305 of the lower pulley 304 is fitted with the four sets of semi-arc plates 211 in the other two sets of lower medicine buckets 104, and spring telescopic rods 306 are symmetrically installed above the processing box 001, and slide rails 307 are installed at the output ends of the two sets of spring telescopic rods 306, and the insides of the slide rails 307 are respectively fitted with the two sets of belts 305.

[0052] The belt 305 can be used to drive the pulley 304 to rotate the arc formed by the four groups of semi-arc plates 211, and by changing the position of the four groups of semi-arc plates 211, the circumference of the arc is changed. The transmission ratio is used to change the speed of its rotation, so that the medicine feeding speed of the threaded shaft 201 is changed, and the spring telescopic rod 306 can tighten the belt 305 to compress the spring telescopic rod 306 when the diameter of the four groups of semi-arc plates 211 increases, and when the diameter of the four groups of semi-arc plates 211 decreases, the belt 305 is relaxed as a whole. At this time, the spring telescopic rod 306 squeezes the belt 305, so that the belt 305 is tightened as a whole, avoiding the slipping of the belt 305, so that the belt 305 can be squeezed and compensated in different states.

[0053] A method for treating circulating cooling water by injecting a reagent, comprising the above-mentioned circulating cooling water by injecting a reagent, wherein the specific treatment steps are as follows:

[0054] S1: By turning the knob 207, the main bevel gear 206 drives the multiple sets of secondary bevel gears 209 to rotate simultaneously, so that the internal threaded cylinder 208 drives the screw 210 to move, so that the four sets of semi-arc plates 211 move simultaneously, thereby changing the diameter of the arc formed by the four sets of semi-arc plates 211;

[0055] S2: The motor 301 drives the belt 305 to move, so that the belt 305 drives the arc formed by the four groups of semi-arc plates 211 to rotate, so that the threaded shaft 201 below rotates, so as to evenly transport the medicine in the lower medicine hopper 104;

[0056] S3: Since the diameters of the four groups of semi-arc plates 211 in each group of drug dispensing hoppers 104 are adjusted, the rotation speed thereof is changed, thereby achieving a change in the drug dispensing speed of each group of drug dispensing hoppers 104 .

[0057] like Figure 1-8 As shown, different medicines are respectively added into each group of medicine hoppers 104. At this time, according to the amount of medicines to be dropped, the knob 207 is turned to make the knob 207 drive the main bevel gear 206 to rotate, so that the four groups of auxiliary bevel gears 209 rotate at the same time, thereby driving the internal threaded cylinder 208 to rotate and drive the screw 210 to move, so that the position of the semi-arc plate 211 changes. When the diameter between each group of semi-arc plates 211 increases, it means that the speed of its rotation slows down, and vice versa. In this way, the semi-arc plates 211 inside each group of medicine hoppers 104 are adjusted Finished, at this time, the motor 301 drives the rotating shaft 302 to rotate, so that the stirring blades 303 and the pulley 304 rotate at the same time, and the belt 305 rotates each group of threaded shafts 201, so as to carry out the drug feeding work. At the same time, the water inlet pipe 102 transports the circulating water to the treatment water tank 101, and the stirring blades 303 are used to make the medicine and the circulating cooling water quickly merge, and are discharged through the water outlet pipe 103. In this way, continuous circulating cooling water drug feeding work can be carried out, and the amount of each group of medicine can be controlled while feeding, thereby improving the effect of medicine treatment.

[0058] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A reagent injection treatment device for circulating cooling water, comprising a treatment box (001), characterized in that: A treatment water tank (101) is installed below the treatment box (001), and water inlet pipes (102) are symmetrically connected to the treatment water tank (101), and two groups of water inlet pipes (102) are connected to the output end pipeline of the cooling circulating water storage device after use. A water outlet pipe (103) is connected below the treatment water tank (101), and the water outlet pipe (103) is connected to the pipeline of the cooling circulating water storage device before use. Four groups of lower medicine hoppers (104) are installed above the treatment box (001), and a drug delivery pipe (105) is connected below each group of the lower medicine hoppers (104), and the bottom of the drug delivery pipe (105) is in the same vertical plane as the top of the treatment water tank (101); A drug dispensing adjustment component (002) is disposed in the drug dispensing bucket (104) and is used to control the drug dispensing speed in each group of drug dispensing buckets (104); The driving component (003) is arranged above the processing box (001) and is used to drive the drug dispensing adjustment component (002) to work.

2. The reagent injection treatment device for circulating cooling water according to claim 1 is characterized in that: The drug delivery adjustment component (002) comprises a threaded shaft (201), the threaded shaft (201) is rotatably connected in each group of drug delivery tubes (105), and the threaded shaft (201) is arranged to penetrate the drug delivery hopper (104) above.

3. The reagent injection treatment device for circulating cooling water according to claim 2 is characterized in that: A fixing frame (202) is installed above the lower medicine hopper (104), a limiting plate (203) is installed above the fixing frame (202), an annular frame (204) is slidably connected inside the limiting plate (203), and the annular frame (204) is axially connected to the threaded shaft (201) below.

4. The reagent injection treatment device for circulating cooling water according to claim 3 is characterized in that: A cross connecting frame (205) is installed above the annular frame (204), a main bevel gear (206) is rotatably connected inside the cross connecting frame (205), a knob (207) is installed above the cross connecting frame (205), and the knob (207) is axially connected to the main bevel gear (206).

5. The reagent injection treatment device for circulating cooling water according to claim 4 is characterized in that: Four groups of internal threaded barrels (208) are connected and penetrated in a cross-shaped distribution on the inner wall of the cross connecting frame (205), one side of the four groups of internal threaded barrels (208) is installed with a secondary bevel gear (209), and the four groups of secondary bevel gears (209) are meshed with the main bevel gear (206), the four groups of internal threaded barrels (208) are internally threaded with screw rods (210), one side of the four groups of screw rods (210) is rotatably connected with a semi-arc plate (211), and the four groups of semi-arc plates (211) form a ring, and a guide block (212) is installed below the semi-arc plate (211).

6. The reagent injection treatment device for circulating cooling water according to claim 5 is characterized in that: A guide groove (213) is provided in the annular frame (204), and the guide groove (213) is slidably connected to the guide block (212). Guide rods (214) are installed inside the four groups of semi-arc plates (211), and the guide rods (214) are slidably connected to the cross connection frame (205).

7. The reagent injection treatment device for circulating cooling water according to claim 1 is characterized in that: The driving assembly (003) comprises a motor (301), the motor (301) is installed above the treatment box (001), a rotating shaft (302) is installed at the output end of the treatment box (001), and the lower part of the rotating shaft (302) is rotatably connected to the treatment water tank (101), and the connection between the rotating shaft (302) and the water outlet pipe (103) is located in a vertical horizontal position, and a plurality of groups of stirring blades (303) are sleeved and fixed on the rotating shaft (302), and the stirring blades (303) are arranged in the treatment water tank (101).

8. The reagent injection treatment device for circulating cooling water according to claim 7 is characterized in that: Two groups of pulleys (304) are sleeved and fixed on the rotating shaft (302), and the two groups of pulleys (304) are arranged above the processing box (001). A belt (305) is fitted on one group of the pulleys (304), and the belt (305) is fitted with four groups of semi-arc plates (211) in the two groups of lower medicine buckets (104) at the same time, and the belt (305) of the lower pulley (304) is fitted with four groups of semi-arc plates (211) in the other two groups of lower medicine buckets (104). Spring telescopic rods (306) are symmetrically installed above the processing box (001), and slide rails (307) are installed at the output ends of the two groups of spring telescopic rods (306), and the inside of the slide rails (307) is fitted with the two groups of belts (305) respectively.

9. A method for treating circulating cooling water by injecting a reagent, comprising a device for treating circulating cooling water by injecting a reagent according to any one of claims 1 to 8, characterized in that: The processing steps are as follows: S1: By turning the knob (207), the main bevel gear (206) drives the multiple sets of secondary bevel gears (209) to rotate simultaneously, so that the internal threaded cylinder (208) drives the screw (210) to move, so that the four sets of semi-arc plates (211) move simultaneously, thereby changing the diameter of the arc formed by the four sets of semi-arc plates (211); S2: The motor (301) drives the belt (305) to move, so that the belt (305) drives the arc formed by the four groups of semi-arc plates (211) to rotate, so that the threaded shaft (201) below rotates, thereby evenly conveying the medicine in the lower medicine hopper (104); S3: Since the diameters of the four groups of semi-arc plates (211) in each group of drug dispensing buckets (104) are adjusted, the rotation speed thereof is changed, thereby achieving a change in the drug dispensing speed of each group of drug dispensing buckets (104).

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