Sewage treatment agent adding and mixing device and mixing method for sewage treatment

Abstract

The invention belongs to the field of sewage treatment equipment, and particularly relates to a sewage treatment agent adding and mixing device for sewage treatment and a mixing method.The sewage treatment agent adding and mixing device comprises a stirring box, supporting legs are arranged at the bottom of the stirring box, a water inlet and a water outlet are formed in the peripheral side wall of the stirring box in a communicating mode, and a grinding box communicating with the stirring box is arranged at the top of the stirring box; a motor is fixed to the bottom of the stirring box, the output end of the motor is connected with a rotating shaft through a coupler, the rotating shaft penetrates through the stirring box and is rotationally connected with the stirring box in a sealed mode, stirring blades are arranged on the rotating shaft, and a grinding assembly is arranged in the grinding box. The grinding assembly comprises a piston rod which penetrates through the top of the grinding box and is movably connected with the grinding box, and an extrusion plate is fixed to the bottom end of the piston rod. By arranging the grinding assembly, medicine particles are subjected to extrusion force in the vertical direction and friction force in the horizontal direction during grinding, the grinding efficiency is high, the structure is simple, and the equipment cost is low.

Description

Technical Field

[0001] The invention belongs to the field of sewage treatment equipment, and in particular relates to a sewage treatment agent adding and mixing device and a mixing method for sewage treatment. Background Art

[0002] Sewage treatment refers to the process of purifying sewage to meet discharge requirements. It is widely used in various fields such as construction, agriculture, transportation, catering, etc., and is increasingly entering the daily life of ordinary people. Through sewage treatment, water pollution can be reduced, water resources can be protected, and the quality of water environment can be improved. It provides a strong guarantee for the sustainable development of mankind and is of great significance to protecting the environment and maintaining ecological balance. The sewage treatment dosing device is an indispensable and important equipment in sewage treatment technology.

[0003] Existing publication number CN118079754A discloses a sewage treatment agent mixing device and an operating method thereof, including a device main body, a feed funnel and a motor bracket are fixed on the upper surface of the device main body, a stirring motor is fixed on the inner side of the motor bracket, the output shaft end of the stirring motor is connected to a mixing stirring shaft, a stirring paddle is fixed on the outer surface of the mixing stirring shaft, and a driving track wheel is fixed on the outer side of the output shaft of the stirring motor. When the drug is added into the equipment, the drug is crushed and preliminarily mixed, thereby shortening the stirring time required for drug mixing and improving work efficiency.

[0004] The existing device also has the following deficiencies:

[0005] 1. The existing device crushes the drug particles into powder by reciprocating up and down movement of the lifting and pressing block in cooperation with the auxiliary crushing block, accelerates the dissolution of the drug particles and shortens the drug mixing time. However, due to the presence of water in the gathering tube, when the lifting and pressing block moves up and down, the drug particles are always in an active state under the action of the water flow instead of gathering under the lifting and pressing block, thereby reducing the number of drug particles between the lifting and pressing block and the auxiliary crushing block, resulting in low grinding efficiency.

[0006] 2. The existing device uses water flow to flush the drug particles into the gathering tube and crush them. Then the drug powder is dissolved in water and passes through the filter holes into the mixing chamber. However, the water volume in the gathering tube is limited, and the drug powder cannot be effectively diluted. The interaction between the particles is enhanced, and a viscous paste-like substance is easily formed, which causes the filter holes to be blocked.

[0007] 3. In the existing device, the up and down movement and rotation of the lifting and pressing block are driven by different driving devices respectively, the structure is relatively complex and the equipment cost is high. Summary of the invention

[0008] The purpose of the present invention is to provide a sewage treatment agent adding and mixing device and a mixing method for sewage treatment in view of the problems raised in the above background technology.

[0009] To achieve the above object, the present invention adopts the following technical scheme: a sewage treatment agent adding and mixing device for sewage treatment, comprising:

[0010] A mixing box, wherein legs are provided at the bottom of the mixing box, a water inlet and a water outlet are connected on the side walls of the mixing box, a grinding box connected to the mixing box is provided on the top of the mixing box, a motor is fixed at the bottom of the mixing box, an output end of the motor is connected to a rotating shaft through a coupling, the rotating shaft passes through the mixing box and is sealed and rotatably connected to the mixing box, and a mixing blade is provided on the rotating shaft.

[0011] Furthermore, a grinding assembly is provided in the grinding box, and the grinding assembly includes a piston rod that passes through the top of the grinding box and is movably connected to the grinding box, an extrusion plate is fixed to the bottom end of the piston rod, a baffle is rotatably connected to the piston rod, and the baffle is slidably connected to the grinding box, through holes are provided on the extrusion plate and the baffle for passing pharmaceutical particles, a sieve plate is rotatably connected to the bottom of the grinding box, a box cover is provided on the top of the grinding box, and the grinding assembly also includes a driving component.

[0012] Furthermore, the driving component includes a nut fixed to the top of the grinding box, and the piston rod is provided with an external thread that matches the nut thread.

[0013] Furthermore, the driving component also includes a swivel arm fixed on the piston rod, a connecting rod is rotatably connected to the swivel arm, a sleeve is slidably connected to the rotating shaft, a rotating disk is fixed to the sleeve, a cylindrical pin is provided on the rotating disk, the cylindrical pin is non-coaxially arranged with the rotating disk, and the connecting rod is rotatably connected to the cylindrical pin at one end away from the swivel arm.

[0014] Furthermore, a key slot is provided on the rotating shaft, a flat key is fixed on the inner wall of the sleeve, and the flat key is slidably connected in the key slot.

[0015] Furthermore, a limiting groove is provided on the inner side wall of the grinding box, a limiting block is fixed on the baffle, and the limiting block is slidably connected in the limiting groove.

[0016] Furthermore, a vibration assembly is provided on the sieve plate, and the vibration assembly includes an arc-shaped groove opened on the upper surface of the sieve plate, an extrusion rod slidably connected to the arc-shaped groove is provided in the arc-shaped groove, and the top end of the extrusion rod is fixed to the top plate of the mixing box, and a spring is provided between one end of the arc-shaped groove and the extrusion rod, and the two ends of the spring are respectively fixed on the extrusion rod and the side wall of the arc-shaped groove.

[0017] Furthermore, the vibration assembly also includes a protrusion fixed on the peripheral side wall of the screen plate, a dial plate is fixed on the rotating shaft, and a plurality of dial blocks distributed in a circumferential array with the central axis of the rotating shaft as the center are fixed on the dial plate.

[0018] The present invention also provides a method for adding and mixing a sewage treatment agent for sewage treatment, comprising the following steps:

[0019] S1. Inject an appropriate amount of water into the mixing box through the water inlet, open the box cover and pour the pharmaceutical particles into the grinding box.

[0020] S2. Turn on the motor, the motor drives the rotating shaft and the rotating disk to rotate, and the rotating arm drives the piston rod to swing back and forth under the action of the connecting rod. With the cooperation of the external thread and the nut, the piston rod swings back and forth and moves up and down at the same time.

[0021] S3. When the piston rod moves to the top of its stroke, the through holes on the extrusion plate and the baffle plate are aligned, and the medicine particles pass through the through holes and fall onto the sieve plate. Then the piston rod drives the extrusion plate to rotate and move downward, and the medicine particles are crushed into powder under the cooperation of the extrusion plate and the sieve plate.

[0022] S4. When the rotating shaft rotates, it drives the toggle plate and the toggle block to rotate. When the toggle block contacts the convex block, it drives the convex block to rotate and squeezes the spring. When the toggle block is separated from the convex block, the convex block rotates in the opposite direction under the action of the spring. The convex block drives the sieve plate to rotate back and forth to accelerate the speed at which the pharmaceutical powder falls into the mixing box.

[0023] S5. After the medicine powder enters the mixing box, it mixes with the water in the mixing box. When the rotating shaft rotates, it drives the mixing blades to rotate to stir the water in the mixing box, thereby accelerating the mixing of the medicine powder and water.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] 1. The present invention sets a grinding assembly, and drives the extrusion plate to move up and down and rotate reciprocatingly at the same time by the piston rod. When the piston rod moves to the top of the stroke, the medicine particles pass through the through hole and fall onto the screen plate. When the piston rod moves downward, the extrusion plate cooperates with the screen plate to rotate, extrude and grind the medicine particles. The medicine particles are subjected to the extrusion force in the vertical direction and the friction force in the horizontal direction at the same time. The grinding efficiency is high, and the extrusion plate will not drive the medicine particles on the screen plate to move when it moves downward. Compared with the prior art, the grinding efficiency is further improved.

[0026] 2. The present invention sets a vibration component. When the rotating shaft rotates, it drives the toggle plate and the toggle block to rotate. When the toggle block contacts the protrusion, it drives the protrusion to rotate and squeezes the spring. When the toggle block is separated from the protrusion, the protrusion rotates in the opposite direction under the action of the spring. The protrusion drives the sieve plate to rotate back and forth to accelerate the speed of the pharmaceutical powder falling into the mixing box. At the moment when the toggle block is separated from the protrusion, the spring pushes the sieve plate to quickly reset and generate high-frequency vibration, which can shake off the pharmaceutical powder stuck in the filter hole of the sieve plate to avoid clogging of the sieve plate.

[0027] 3. In the present invention, the rotation of the stirring blade, the reciprocating rotation and the up and down reciprocating movement of the extrusion plate, and the reciprocating rotation and vibration of the screen plate are all driven by a single motor, with a simple structure and low equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a sewage treatment agent adding and mixing device for sewage treatment provided by the present invention;

[0029] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 It is a schematic diagram of the internal structure of a stirring box of a sewage treatment agent adding and mixing device for sewage treatment provided by the present invention;

[0031] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0032] Figure 5 It is a schematic diagram of the internal structure of a grinding box of a sewage treatment agent adding and mixing device for sewage treatment provided by the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of a sleeve and a rotating disk of a sewage treatment agent adding and mixing device for sewage treatment provided by the present invention;

[0034] Figure 7 The present invention provides a flow chart of a sewage treatment agent adding and mixing method for sewage treatment.

[0035] In the figure, 1 is a mixing box, 11 is a leg, 12 is a water inlet, 13 is a water outlet, 14 is a motor, 15 is a rotating shaft, 151 is a mixing blade, 152 is a keyway, 153 is a toggle plate, and 1531 is a toggle block;

[0036] 2 grinding box, 20 limiting groove, 21 piston rod, 22 extrusion plate, 23 baffle, 231 limiting block, 24 screen plate, 241 arc groove, 242 extrusion rod, 243 spring, 244 bump, 25 nut, 211 external thread, 212 rotating arm, 26 connecting rod, 27 sleeve, 271 rotating disk, 272 flat key, 2711 cylindrical pin, 28 box cover. DETAILED DESCRIPTION

[0037] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0038] like Figure 1-Figure 6As shown, a sewage treatment agent adding and mixing device for sewage treatment comprises a mixing box 1, a support leg 11 is provided at the bottom of the mixing box 1, a water inlet 12 and a water outlet 13 are connected on the side wall of the mixing box 1, the water inlet 12 is connected to an external water source and is provided with a valve, a grinding box 2 connected to the mixing box 1 is provided on the top of the mixing box 1, a motor 14 is fixed at the bottom of the mixing box 1, an output end of the motor 14 is connected to a rotating shaft 15 through a coupling, the rotating shaft 15 passes through the mixing box 1 and is sealed and rotatably connected to the mixing box 1, and a mixing blade 151 is provided on the rotating shaft 15.

[0039] During specific operation, the valve between the external water source and the water inlet 12 is opened to inject a proper amount of water into the mixing box 1, and then the box cover 28 is opened to pour the pharmaceutical particles into the grinding box 2, and then the motor 14 is turned on.

[0040] A grinding assembly is provided in the grinding box 2, and the grinding assembly includes a piston rod 21 that passes through the top of the grinding box 2 and is movably connected to the grinding box 2, an extrusion plate 22 is fixed to the bottom end of the piston rod 21, a baffle 23 is rotatably connected to the piston rod 21, the baffle 23 is slidably connected to the grinding box 2, a limiting groove 20 is provided on the inner side wall of the grinding box 2, a limiting block 231 is fixed on the baffle 23, the limiting block 231 is slidably connected to the limiting groove 20, through holes are provided on the extrusion plate 22 and the baffle 23 for the medicinal particles to pass through, a sieve plate 24 is rotatably connected to the bottom of the grinding box 2, a box cover 28 is provided on the top of the grinding box 2, and the grinding assembly also includes a driving component.

[0041] The driving component includes a nut 25 fixed to the top of the grinding box 2, a connecting plate is fixed to the top of the grinding box 2, the nut 25 is fixed to the connecting plate, the piston rod 21 is provided with an external thread 211 that matches the thread of the nut 25, the driving component also includes a swivel arm 212 fixed to the piston rod 21, the swivel arm 212 is rotatably connected to the connecting rod 26, the rotating shaft 15 is slidably connected to the sleeve 27, the rotating shaft 15 is provided with a keyway 152, a flat key 272 is fixed on the inner side wall of the sleeve 27, the flat key 272 is slidably connected to the keyway 152, a rotating disk 271 is fixed to the sleeve 27, the rotating disk 271 is provided with a cylindrical pin 2711, the cylindrical pin 2711 is non-coaxially arranged with the rotating disk 271, and the end of the connecting rod 26 away from the swivel arm 212 is rotatably connected to the cylindrical pin 2711.

[0042] During specific operation, the motor 14 drives the rotating shaft 15 and the rotating disk 271 to rotate. Under the action of the connecting rod 26, the rotating arm 212 swings back and forth to drive the piston rod 21 to rotate back and forth. With the cooperation of the external thread 211 and the nut 25, the piston rod 21 swings back and forth and moves back and forth up and down. When the piston rod 21 moves to the top of the stroke, the through holes on the extrusion plate 22 and the baffle plate 23 are aligned, and the medicinal particles pass through the through holes and fall onto the sieve plate 24. Then the piston rod 21 drives the extrusion plate 22 to rotate and move downward, and the medicinal particles are crushed into powder under the cooperation of the extrusion plate 22 and the sieve plate 24.

[0043] A vibration assembly is provided on the sieve plate 24, and the vibration assembly includes an arc groove 241 opened on the upper surface of the sieve plate 24, an extrusion rod 242 slidably connected to the arc groove 241 is provided in the arc groove 241, and the top of the extrusion rod 242 is fixed to the top plate of the mixing box 1, and a spring 243 is provided between one end of the arc groove 241 and the extrusion rod 242, and the two ends of the spring 243 are respectively fixed to the extrusion rod 242 and the side wall of the arc groove 241, and the vibration assembly also includes a protrusion 244 fixed on the side wall of the sieve plate 24, and a toggle plate 153 is fixed on the rotating shaft 15, and a plurality of toggle blocks 1531 distributed in a circumferential array with the central axis of the rotating shaft 15 as the center are fixed on the toggle plate 153.

[0044] During specific operation, when the rotating shaft 15 rotates, it drives the toggle plate 153 and the toggle block 1531 to rotate. When the toggle block 1531 contacts the protrusion 244, it drives the protrusion 244 to rotate and squeeze the spring 243. When the toggle block 1531 is separated from the protrusion 244, the protrusion 244 rotates in the opposite direction under the action of the spring 243. The protrusion 244 drives the sieve plate 24 to rotate back and forth so that the pharmaceutical powder falls smoothly into the mixing box 1. After the pharmaceutical powder enters the mixing box 1, it mixes with the water in the mixing box 1. When the rotating shaft 15 rotates, it drives the stirring blade 151 to rotate to stir the water in the mixing box 1, thereby accelerating the mixing of the pharmaceutical powder and water.

[0045] like Figure 7 As shown, the present invention also provides a method for adding and mixing sewage treatment agents for sewage treatment, comprising the following steps:

[0046] S1. Inject an appropriate amount of water into the mixing box 1 through the water inlet 12, open the box cover 28 and pour the pharmaceutical particles into the grinding box 2.

[0047] S2. Turn on the motor 14, which drives the rotating shaft 15 and the rotating disk 271 to rotate. Under the action of the connecting rod 26, the rotating arm 212 drives the piston rod 21 to swing back and forth. Under the cooperation of the external thread 211 and the nut 25, the piston rod 21 swings back and forth while moving up and down.

[0048] S3. When the piston rod 21 moves to the uppermost position of the stroke, the through holes on the extrusion plate 22 and the baffle plate 23 are aligned, and the medicinal particles pass through the through holes and fall onto the sieve plate 24. Then, the piston rod 21 drives the extrusion plate 22 to rotate and move downward, and the medicinal particles are crushed into powder by the cooperation of the extrusion plate 22 and the sieve plate 24.

[0049] S4. When the rotating shaft 15 rotates, it drives the toggle plate 153 and the toggle block 1531 to rotate. When the toggle block 1531 contacts the protrusion 244, it drives the protrusion 244 to rotate and squeeze the spring 243. When the toggle block 1531 is separated from the protrusion 244, the protrusion 244 rotates in the opposite direction under the action of the spring 243. The protrusion 244 drives the sieve plate 24 to reciprocate and make the pharmaceutical powder fall smoothly into the mixing box 1.

[0050] S5. After the medicine powder enters the mixing box 1, it mixes with the water in the mixing box 1. When the rotating shaft 15 rotates, it drives the mixing blades 151 to rotate to stir the water in the mixing box 1, thereby accelerating the mixing of the medicine powder and the water.

[0051] The working principle of the present invention is as follows:

[0052] When working, open the valve between the external water source and the water inlet 12 to inject a proper amount of water into the mixing box 1, then open the box cover 28 to pour the pharmaceutical particles into the grinding box 2, and then start the motor 14;

[0053] The motor 14 drives the rotating shaft 15 and the rotating disk 271 to rotate. Under the action of the connecting rod 26, the reciprocating swing of the rotating arm 212 drives the piston rod 21 to rotate reciprocally. Under the cooperation of the external thread 211 and the nut 25, the piston rod 21 reciprocates and moves up and down. When the piston rod 21 moves to the top of the stroke, the through holes on the extrusion plate 22 and the baffle plate 23 are aligned, and the medicinal particles pass through the through holes and fall onto the sieve plate 24. Then the piston rod 21 drives the extrusion plate 22 to rotate and move downward. The through holes on the extrusion plate 22 and the baffle plate 23 are staggered, and the medicinal particles no longer fall onto the sieve plate 24. When the extrusion plate 22 moves downward, it cooperates with the sieve plate 24 to rotate and extrude and grind the medicinal particles. The medicinal particles are subjected to the extrusion force in the vertical direction and the friction force in the horizontal direction at the same time. The grinding efficiency is high, and the extrusion plate 22 will not drive the medicinal particles on the sieve plate 24 to move when moving downward, which further improves the grinding efficiency compared with the prior art.

[0054] When the rotating shaft 15 rotates, it drives the toggle plate 153 and the toggle block 1531 to rotate. When the toggle block 1531 contacts the protrusion 244, it drives the protrusion 244 to rotate and squeeze the spring 243. When the toggle block 1531 is separated from the protrusion 244, the protrusion 244 rotates in the opposite direction under the action of the spring 243, and the protrusion 244 drives the sieve plate 24 to reciprocate and accelerate the speed of the medicine powder falling into the mixing box 1. At the moment when the toggle block 1531 is separated from the protrusion 244, the spring 243 pushes the sieve plate 24 to quickly reset and generate high-frequency vibration, which can shake off the medicine powder stuck in the filter hole of the sieve plate 24 to avoid clogging of the sieve plate 24.

[0055] After the pharmaceutical powder enters the mixing box 1, it is mixed with the water in the mixing box 1. When the rotating shaft 15 rotates, it drives the mixing blades 151 to rotate to stir the water in the mixing box 1, thereby accelerating the mixing of the pharmaceutical powder and water. In the present invention, the rotation of the mixing blades 151, the reciprocating rotation and up and down reciprocating movement of the extrusion plate 22, and the reciprocating rotation and vibration of the sieve plate 24 are all driven by a single motor 14, with a simple structure and low equipment cost.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage treatment agent adding and mixing device for sewage treatment, characterized in that: include: A mixing box (1), wherein a support leg (11) is provided at the bottom of the mixing box (1), a water inlet (12) and a water outlet (13) are provided on the peripheral side wall of the mixing box (1), a grinding box (2) connected to the mixing box (1) is provided at the top of the mixing box (1), a motor (14) is fixed at the bottom of the mixing box (1), an output end of the motor (14) is connected to a rotating shaft (15) via a coupling, the rotating shaft (15) passes through the mixing box (1) and is sealed and rotatably connected to the mixing box (1), and a mixing blade (151) is provided on the rotating shaft (15).

2. A sewage treatment agent adding and mixing device for sewage treatment according to claim 1, characterized in that: A grinding assembly is provided in the grinding box (2), and the grinding assembly includes a piston rod (21) that passes through the top of the grinding box (2) and is movably connected to the grinding box (2); an extrusion plate (22) is fixed to the bottom end of the piston rod (21); a baffle (23) is rotatably connected to the piston rod (21); the baffle (23) is slidably connected to the grinding box (2); through holes are provided on the extrusion plate (22) and the baffle (23) for the medicinal particles to pass through; a sieve plate (24) is rotatably connected to the bottom of the grinding box (2); a box cover (28) is provided on the top of the grinding box (2); and the grinding assembly also includes a driving component.

3. A sewage treatment agent adding and mixing device for sewage treatment according to claim 2, characterized in that: The driving component comprises a nut (25) fixed to the top of the grinding box (2), and the piston rod (21) is provided with an external thread (211) that matches the thread of the nut (25).

4. A sewage treatment agent adding and mixing device for sewage treatment according to claim 3, characterized in that: The driving component also includes a rotating arm (212) fixed on the piston rod (21), a connecting rod (26) being rotatably connected to the rotating arm (212), a sleeve (27) being slidably connected to the rotating shaft (15), a rotating disk (271) being fixed to the sleeve (27), a cylindrical pin (2711) being provided on the rotating disk (271), the cylindrical pin (2711) being non-coaxially arranged with the rotating disk (271), and an end of the connecting rod (26) away from the rotating arm (212) being rotatably connected to the cylindrical pin (2711).

5. A sewage treatment agent adding and mixing device for sewage treatment according to claim 4, characterized in that: The rotating shaft (15) is provided with a keyway (152), and a flat key (272) is fixed on the inner wall of the sleeve (27), and the flat key (272) is slidably connected in the keyway (152).

6. A sewage treatment agent adding and mixing device for sewage treatment according to claim 2, characterized in that: A limiting groove (20) is provided on the inner side wall of the grinding box (2), a limiting block (231) is fixed on the baffle (23), and the limiting block (231) is slidably connected in the limiting groove (20).

7. A sewage treatment agent adding and mixing device for sewage treatment according to claim 2, characterized in that: The sieve plate (24) is provided with a vibration assembly, the vibration assembly comprising an arc-shaped groove (241) opened on the upper surface of the sieve plate (24), an extrusion rod (242) slidably connected to the arc-shaped groove (241) is provided in the arc-shaped groove (241), the top end of the extrusion rod (242) is fixed to the top plate of the mixing box (1), a spring (243) is provided between one end of the arc-shaped groove (241) and the extrusion rod (242), and two ends of the spring (243) are respectively fixed to the extrusion rod (242) and the side wall of the arc-shaped groove (241).

8. A sewage treatment agent adding and mixing device for sewage treatment according to claim 7, characterized in that: The vibration assembly also includes a protrusion (244) fixed on the peripheral side wall of the screen plate (24), a dial (153) is fixed on the rotating shaft (15), and a plurality of dial blocks (1531) are fixed on the dial (153) and are distributed in a circumferential array with the central axis of the rotating shaft (15) as the center.

9. A mixing method applied to the sewage treatment agent adding and mixing device for sewage treatment as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Inject an appropriate amount of water into the mixing box (1) through the water inlet (12), open the box cover (28) and pour the pharmaceutical granules into the grinding box (2). S2. Turn on the motor (14), the motor (14) drives the rotating shaft (15) and the rotating disk (271) to rotate, and under the action of the connecting rod (26), the rotating arm (212) drives the piston rod (21) to swing back and forth, and under the cooperation of the external thread (211) and the nut (25), the piston rod (21) swings back and forth and moves up and down. S3. When the piston rod (21) moves to the uppermost position of the stroke, the through holes on the extrusion plate (22) and the baffle plate (23) are aligned, and the medicinal particles pass through the through holes and fall onto the sieve plate (24). Then, the piston rod (21) drives the extrusion plate (22) to rotate and move downward, and the medicinal particles are crushed into powder by the cooperation of the extrusion plate (22) and the sieve plate (24). S4, when the rotating shaft (15) rotates, the toggle plate (153) and the toggle block (1531) are driven to rotate. When the toggle block (1531) contacts the protrusion (244), the protrusion (244) is driven to rotate and squeeze the spring (243). When the toggle block (1531) is separated from the protrusion (244), the protrusion (244) rotates in the opposite direction under the action of the spring (243). The protrusion (244) drives the sieve plate (24) to reciprocate and accelerate the speed at which the medicine powder falls into the mixing box (1). S5. After the medicine powder enters the stirring box (1), it mixes with the water in the stirring box (1). When the rotating shaft (15) rotates, the stirring blades (151) are driven to rotate to stir the water in the stirring box (1), thereby accelerating the mixing of the medicine powder and the water.

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