Stirrer of liquid preparation system

Abstract

The invention belongs to the technical field of liquid preparation stirring, and discloses a liquid preparation system stirrer which comprises a liquid preparation tank, supporting legs are fixed to the bottom end of the liquid preparation tank, and a second dosing mechanism is arranged in a tapping mechanism. According to the device, liquid medicine in the liquid preparation tank can be stirred through the shape of the stirring rod when the stirring rod rotates, and when the stirring rod rotates, a spiral blade makes contact with the liquid medicine in the liquid preparation tank and drives the spiral blade to rotate through contact, and a reciprocating screw is driven to rotate; the shape of the reciprocating screw rod drives the lantern ring frame to reciprocate during rotation, the change of the position of the lantern ring frame performs turbulent flow stirring on the liquid medicine in the liquid preparation tank during rotation, and the spoiler rotates due to the contact of the liquid medicine, so that the flowing path of the liquid medicine in the liquid preparation tank is changed; therefore, the purpose of improving the stirring efficiency by conveniently disturbing flow when the device is used for preparing liquid and stirring is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid preparation and stirring, in particular to a liquid preparation system stirrer. Background Art

[0002] Liquid preparation system agitators are widely used in pharmaceutical, chemical, laboratory and other fields. Their main function is to mix the various components in the solution evenly through stirring to achieve the desired chemical reaction or physical state. However, the existing liquid preparation system agitators have some obvious problems during use, which limit their efficiency and performance.

[0003] When preparing the liquid, due to the fixed position of the agitator, the liquid can only be stirred through one flow path when the agitator is used to stir the liquid. It takes a long time and a high rate of stirring to ensure uniform stirring, which reduces the efficiency of liquid preparation. It is also impossible to add synthetic agents or reactive agents to the liquid in the tank during stirring. Adding synthetic agents or reactive agents at different positions (such as above the liquid or inside the liquid) will also affect the effect of liquid preparation.

[0004] By turbulently stirring the medicine liquid in the tank, the progress of medicine liquid synthesis is accelerated, and the agitator can rotate freely during stirring to add synthesis agents or reaction agents above the medicine liquid or inside the medicine liquid, thereby improving the user's use of the device to improve the efficiency of liquid preparation. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a liquid preparation system agitator.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a liquid mixing system agitator, comprising a liquid mixing tank, a supporting foot is fixed at the bottom end of the liquid mixing tank, an explosion-proof ring is fixed on the outside of the liquid mixing tank, a liquid adding port is arranged at the top end of the liquid mixing tank, a liquid discharge port is arranged at the bottom end of the liquid mixing tank, a supporting frame is fixed at the top end of the liquid mixing tank, a servo motor is fixed at the top end of the supporting frame, an opening mechanism is arranged at the bottom end of the servo motor, a spoiler mechanism is arranged on the outside of the opening mechanism, a first drug adding mechanism is arranged inside the opening mechanism, and a second drug adding mechanism is arranged inside the opening mechanism;

[0007] The hole opening mechanism includes a drug-dosing cartridge, a drug-dosing rod and a first cylinder. The drug-dosing cartridge is fixed to the bottom end of the servo motor, the drug-dosing rod is fixed to the bottom end of the drug-dosing cartridge, the first cylinder is fixed to the top end inside the drug-dosing cartridge, and the first gear rod is fixed to the bottom end of the first cylinder.

[0008] Preferably, the top end of the dosing cartridge is fixed to the output end of the servo motor, the bottom end of the inside of the dosing cartridge is connected to the inside of the dosing rod, and the diameter of the first gear rod is the same as the diameter of the opening at the top end of the dosing rod.

[0009] Preferably, the spoiler mechanism includes a stirring rod, a reciprocating screw and a spiral blade, the stirring rod is fixed to the outside of the dosing rod, the inside of the stirring rod is movably connected to the reciprocating screw, the outside of the reciprocating screw is fixed with a spiral blade, the outside of the reciprocating screw is provided with a ring frame, and the inside of the ring frame is movably connected with a spoiler.

[0010] Preferably, the stirring rods are provided in several groups, the stirring rods are symmetrically distributed about the central axis of the dosing rod, the outer wall of the reciprocating screw is close to the inner wall of the stirring rod, and the reciprocating screw and the stirring rod are rotatably connected.

[0011] Preferably, the spoilers are provided in a plurality of groups, the spoilers are distributed at equal intervals about the central axis of the collar frame, the contact surface between the spoilers and the collar frame is a sphere, and the spoilers and the collar frame are rotatably connected.

[0012] Preferably, the first dosing mechanism comprises a first baffle, a first dosing hole and a second dosing hole, the first baffle is fixed inside the dosing rod, the first dosing hole is opened outside the dosing rod, the second dosing hole is opened outside the dosing rod, the first block is movably connected inside the dosing rod, the second block is movably connected inside the dosing rod, and a second cylinder is fixed outside the first block.

[0013] Preferably, the first dosing hole and the second dosing hole are symmetrically distributed about the central axis of the dosing rod, the diameters of the first dosing hole and the second dosing hole are the same, the outer diameter of the first stopper is equal to the inner diameter of the first dosing hole, the outer diameter of the second stopper is equal to the inner diameter of the second dosing hole, and the first stopper and the second stopper are symmetrically distributed about the central axis of the dosing rod.

[0014] Preferably, the second dosing mechanism includes a second baffle, a liquid medicine through hole and a second gear rod, the second baffle is fixed inside the dosing rod, a liquid medicine through hole is opened inside the second baffle, the dosing rod is movably connected with the second gear rod, the bottom end of the second gear rod is fixed with a first electromagnet, the bottom end of the second gear rod is fixed with a return spring, the bottom end of the inside of the dosing rod is fixed with a second electromagnet, and the outside of the dosing rod is opened with a third dosing hole.

[0015] Preferably, the diameter of the medicine liquid through hole is equal to the diameter of the second gear rod, the return spring is used to squeeze the second gear rod and keep it moving upward, two groups of the third dosing holes are opened, and the third dosing holes are symmetrically distributed about the central axis of the dosing rod.

[0016] The present invention also provides a method for using a liquid preparation system agitator, comprising the following steps:

[0017] S1. Add a large amount of liquid medicine to the inside of the liquid preparation tank through the liquid adding port, start the servo motor, and the servo motor drives the dosing cylinder and the dosing rod to rotate, so that the dosing rod drives the stirring rod to rotate by itself, and then stirs the liquid medicine inside the liquid preparation tank through the shape of the stirring rod itself. Further, when the stirring rod follows the rotation, the spiral blade contacts the liquid medicine inside the liquid preparation tank, and drives itself to rotate through the contact, and then drives the reciprocating screw to rotate, so that the shape of the reciprocating screw drives the ring frame to reciprocate during rotation, and then the liquid medicine inside the liquid preparation tank is disturbed and stirred during rotation by changing the position of the ring frame. Furthermore, the spoiler will also rotate due to the contact with the liquid medicine, further affecting the flow path of the liquid medicine inside the liquid preparation tank, thereby improving the stirring efficiency by improving the turbulence effect.

[0018] S2. When it is necessary to add a synthetic agent or a reactive agent to the stirring liquid medicine, the first cylinder is started to disengage the first gear rod from the through hole. At this time, the synthetic agent or reactive agent in the dosing cylinder can fall into the dosing rod and be blocked by the first block and the second block inside the first baffle. The second cylinder is started to push the first block and the second block, so that the first dosing hole and the second dosing hole are blocked or opened with the first block and the second block, so that the synthetic agent or reactive agent can fall into the top of the liquid preparation agent through the first dosing hole and the second dosing hole for reaction. When it is necessary to replenish the bottom dosing component, the first block and the second block are set to a distance state, so that the synthetic agent or reactive agent can continue to fall;

[0019] S3, the synthetic agent or the reaction agent stops flowing after falling into the top of the second baffle and the second gear lever. When adding medicine is needed, the first electromagnet and the second electromagnet are started, and the suction of the second cylinder drives the first baffle to move downward, thereby driving the second dosing hole to move downward, so that the second dosing hole is out of contact with the liquid medicine through hole, so that the synthetic agent or the reaction agent can pass through the liquid medicine through hole and be discharged to the bottom of the liquid preparation agent through the third dosing hole. After the dosing is completed, the first electromagnet and the second electromagnet are closed, the reset spring is reset, and the second gear lever is pushed to the position of the liquid medicine through hole to block it again.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention cooperates with structures such as a stirring rod, a reciprocating screw, and a spiral blade so that the device can stir the medicine liquid inside the liquid preparation tank through the shape of the stirring rod itself when the stirring rod rotates. When the stirring rod rotates, the spiral blade contacts the medicine liquid inside the liquid preparation tank and drives itself to rotate through the contact, thereby driving the reciprocating screw to rotate, so that the shape of the reciprocating screw drives the ring frame to reciprocate when rotating, and then the position of the ring frame is changed to stir the medicine liquid inside the liquid preparation tank during rotation. Furthermore, the spoiler will also rotate due to the contact with the medicine liquid, changing the flow path of the medicine liquid inside the liquid preparation tank, so as to achieve the purpose of facilitating the use of the device to stir the liquid and thereby improving the stirring efficiency.

[0022] The present invention sets the coordination of the first baffle, the first dosing hole, the second dosing hole and other structures, so that the device can start the second cylinder to push the first block and the second block, thereby making the first dosing hole and the second dosing hole blocked or opened with the first block and the second block, thereby making the synthetic agent or the reaction agent fall into the top of the liquid preparation agent through the first dosing hole and the second dosing hole for reaction. When it is necessary to replenish the bottom dosing component, the first block and the second block are set to a distant state, at which time the synthetic agent or the reaction agent can continue to fall, thereby achieving the purpose of facilitating the device to add medicine to the top of the liquid preparation.

[0023] The present invention cooperates with structures such as a second baffle, a liquid medicine through hole, and a second gear lever so that the device can start the first electromagnet and the second electromagnet, and the suction of the second cylinder drives the first baffle to move downward, thereby driving the second dosing hole to move downward, so that the second dosing hole is separated from the contact with the liquid medicine through hole, so that the synthetic agent or the reaction agent can pass through the liquid medicine through hole and be discharged to the bottom of the liquid preparation agent through the third dosing hole. After the dosing is completed, the first electromagnet and the second electromagnet are closed, the reset spring is reset, and the second gear lever is pushed to the position of the liquid medicine through hole to re-block it, so as to achieve the purpose of facilitating the device to add medicine to the bottom end of the liquid preparation. BRIEF DESCRIPTION OF THE 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 overall cross-sectional structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the stirring assembly of the present invention;

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the stirring assembly of the present invention;

[0028] Figure 5 For the present invention Figure 4A schematic diagram of the enlarged structure of the local section at point A in the middle;

[0029] Figure 6 For the present invention Figure 4 A schematic diagram of the enlarged structure of the local section at B in the middle;

[0030] Figure 7 For the present invention Figure 4 The enlarged structural diagram of the local section at C in the middle;

[0031] Figure 8 For the present invention Figure 4 The enlarged structural diagram of the local section at D in the middle;

[0032] Fig. 9 It is a schematic diagram of the cross-sectional structure of the stirring assembly of the present invention;

[0033] Fig.10 It is a schematic diagram of the cross-sectional structure of the stirring assembly of the present invention.

[0034] In the figure: 1, liquid dispensing tank; 2, support foot; 3, explosion-proof ring; 4, liquid filling port; 5, liquid discharge port; 6, support frame; 7, servo motor; 8, hole opening mechanism; 801, dosing cylinder; 802, dosing rod; 803, first cylinder; 804, first gear lever; 9, spoiler mechanism; 901, stirring rod; 902, reciprocating screw; 903, spiral blade; 904, collar frame; 905, spoiler; 10, first dosing mechanism ; 1001, first baffle; 1002, first dosing hole; 1003, second dosing hole; 1004, first block; 1005, second block; 1006, second cylinder; 11, second dosing mechanism; 1101, second baffle; 1102, liquid medicine through hole; 1103, second gear lever; 1104, first electromagnet; 1105, reset spring; 1106, second electromagnet; 1107, third dosing hole. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figures 1 to 10As shown, the present invention provides a liquid preparation system agitator, including a liquid preparation tank 1, a supporting foot 2 is fixed to the bottom end of the liquid preparation tank 1, an explosion-proof ring 3 is fixed to the outside of the liquid preparation tank 1, a liquid adding port 4 is arranged at the top of the liquid preparation tank 1, a liquid discharge port 5 is arranged at the bottom end of the liquid preparation tank 1, a supporting frame 6 is fixed to the top of the liquid preparation tank 1, a servo motor 7 is fixed to the top of the supporting frame 6, an opening mechanism 8 is arranged at the bottom end of the servo motor 7, a spoiler mechanism 9 is arranged outside the opening mechanism 8, a first drug adding mechanism 10 is arranged inside the opening mechanism 8, and a second drug adding mechanism 11 is arranged inside the opening mechanism 8.

[0037] like Figures 1 to 10 As shown, the hole opening mechanism 8 includes a drug-dosing cartridge 801, a drug-dosing rod 802 and a first air cylinder 803. The drug-dosing cartridge 801 is fixed to the bottom end of the servo motor 7, the drug-dosing rod 802 is fixed to the bottom end of the drug-dosing cartridge 801, the first air cylinder 803 is fixed to the top end of the inside of the drug-dosing cartridge 801, the first gear rod 804 is fixed to the bottom end of the first air cylinder 803, the top end of the drug-dosing cartridge 801 is fixed to the output end of the servo motor 7, the bottom end of the inside of the drug-dosing cartridge 801 is connected to the inside of the drug-dosing rod 802, and the diameter of the first gear rod 804 is the same as the diameter of the hole opening at the top end of the drug-dosing rod 802.

[0038] like Figures 1 to 10 As shown, the disturbance mechanism 9 includes a stirring rod 901, a reciprocating screw 902 and a spiral blade 903. The stirring rod 901 is fixed to the outside of the dosing rod 802. The reciprocating screw 902 is movably connected to the inside of the stirring rod 901. The stirring rod 901 is provided with several groups. The stirring rods 901 are symmetrically distributed about the central axis of the dosing rod 802. The outer wall of the reciprocating screw 902 is close to the inner wall of the stirring rod 901, and the reciprocating screw 902 and the stirring rod 901 are rotatably connected.

[0039] like Figures 1 to 10 As shown, a spiral blade 903 is fixed to the outside of the reciprocating screw 902, a collar frame 904 is arranged on the outside of the reciprocating screw 902, and a spoiler 905 is movably connected inside the collar frame 904. The spoiler 905 is arranged in several groups, and the spoilers 905 are evenly spaced about the central axis of the collar frame 904. The contact surface between the spoiler 905 and the collar frame 904 is a sphere, and the spoiler 905 and the collar frame 904 are rotatably connected.

[0040] like Figures 1 to 10As shown, the first dosing mechanism 10 includes a first baffle 1001, a first dosing hole 1002 and a second dosing hole 1003. The first baffle 1001 is fixed inside the dosing rod 802. The first dosing hole 1002 is opened outside the dosing rod 802. The second dosing hole 1003 is opened outside the dosing rod 802. The first stopper 1004 is movably connected inside the dosing rod 802. The second stopper 1005 is movably connected inside the dosing rod 802. The first stopper 1004 is A second cylinder 1006 is fixed on the outside, the first dosing hole 1002 and the second dosing hole 1003 are symmetrically distributed about the central axis of the dosing rod 802, the first dosing hole 1002 and the second dosing hole 1003 have the same diameter, the outer diameter of the first stopper 1004 is equal to the inner diameter of the first dosing hole 1002, the outer diameter of the second stopper 1005 is equal to the inner diameter of the second dosing hole 1003, and the first stopper 1004 and the second stopper 1005 are symmetrically distributed about the central axis of the dosing rod 802.

[0041] like Figures 1 to 10 As shown, the second dosing mechanism 11 includes a second baffle 1101, a liquid medicine through hole 1102 and a second gear rod 1103. The second baffle 1101 is fixed inside the dosing rod 802. The liquid medicine through hole 1102 is opened inside the second baffle 1101. The second gear rod 1103 is movably connected inside the dosing rod 802. The bottom end of the second gear rod 1103 is fixed with a first electromagnet 1104. The bottom end of the second gear rod 1103 is fixed with a reset spring 1103. 05. A second electromagnet 1106 is fixed to the bottom end of the dosing rod 802. A third dosing hole 1107 is provided on the outside of the dosing rod 802. The diameter of the liquid through hole 1102 is equal to the diameter of the second gear rod 1103. The reset spring 1105 is used to squeeze the second gear rod 1103 and keep it moving upward. Two groups of third dosing holes 1107 are provided, and the third dosing holes 1107 are symmetrically distributed about the central axis of the dosing rod 802.

[0042] The present invention also provides a method for using a liquid preparation system agitator, comprising the following steps:

[0043] S1. Add a large amount of liquid medicine to the inside of the liquid preparation tank 1 through the liquid adding port 4, start the servo motor 7, and the servo motor 7 drives the dosing cylinder 801 and the dosing rod 802 to rotate, so that the dosing rod 802 drives the stirring rod 901 to rotate by itself, and then stirs the liquid medicine inside the liquid preparation tank 1 through the shape of the stirring rod 901 itself. Further, when the stirring rod 901 follows the rotation, the spiral blade 903 contacts the liquid medicine inside the liquid preparation tank 1, and drives itself to rotate through the contact, and then drives the reciprocating screw 902 to rotate, so that the shape of the reciprocating screw 902 drives the ring frame 904 to reciprocate during rotation, and then the change of the position of the ring frame 904 during rotation performs turbulent stirring on the liquid medicine inside the liquid preparation tank 1. Furthermore, the spoiler 905 will also rotate due to the contact with the liquid medicine, further affecting the flow path of the liquid medicine inside the liquid preparation tank 1, thereby improving the stirring efficiency by improving the turbulent effect.

[0044] S2. When it is necessary to add a synthetic agent or a reactive agent to the stirring liquid medicine, the first cylinder 803 is started to disengage the first gear rod 804 from the through hole. At this time, the synthetic agent or reactive agent in the dosing barrel 801 can fall into the dosing rod 802 and be blocked by the first block 1004 and the second block 1005 in the first baffle 1001. The second cylinder 1006 is started to push the first block 1004 and the second block 1005, so that the first dosing hole 1002 and the second dosing hole 1003 are blocked or opened by the first block 1004 and the second block 1005, so that the synthetic agent or reactive agent can fall into the top of the liquid preparation agent through the first dosing hole 1002 and the second dosing hole 1003 to react. When it is necessary to replenish the bottom dosing component, the first block 1004 and the second block 1005 are set to a distance state, so that the synthetic agent or reactive agent can continue to fall;

[0045] S3, the synthetic agent or the reaction agent stops flowing after falling into the second baffle 1101 and the top of the second gear lever 1103. When adding medicine is needed, the first electromagnet 1104 and the second electromagnet 1106 are started, and the second cylinder 1006 sucks the first block 1004 downward, thereby driving the second dosing hole 1003 downward, so that the second dosing hole 1003 is out of contact with the liquid through hole 1102, so that the synthetic agent or the reaction agent can pass through the liquid through hole 1102 and be discharged to the bottom of the liquid preparation agent through the third dosing hole 1107. After the dosing is completed, the first electromagnet 1104 and the second electromagnet 1106 are closed, and the reset spring 1105 is reset to push the second gear lever 1103 to the position of the liquid through hole 1102 to block it again.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid preparation system agitator, comprising a liquid preparation tank (1), characterized in that: A supporting foot (2) is fixed at the bottom end of the liquid preparation tank (1), an explosion-proof ring (3) is fixed on the outside of the liquid preparation tank (1), a liquid adding port (4) is arranged at the top end of the liquid preparation tank (1), a liquid discharge port (5) is arranged at the bottom end of the liquid preparation tank (1), a supporting frame (6) is fixed at the top end of the liquid preparation tank (1), a servo motor (7) is fixed at the top end of the supporting frame (6), a hole opening mechanism (8) is arranged at the bottom end of the servo motor (7), a flow disturbance mechanism (9) is arranged on the outside of the hole opening mechanism (8), a first drug adding mechanism (10) is arranged inside the hole opening mechanism (8), and a second drug adding mechanism (11) is arranged inside the hole opening mechanism (8); The hole opening mechanism (8) comprises a drug adding cartridge (801), a drug adding rod (802) and a first air cylinder (803); the drug adding cartridge (801) is fixed to the bottom end of the servo motor (7); the drug adding rod (802) is fixed to the bottom end of the drug adding cartridge (801); the first air cylinder (803) is fixed to the top end of the inside of the drug adding cartridge (801); and the first gear rod (804) is fixed to the bottom end of the first air cylinder (803).

2. The agitator for the liquid preparation system according to claim 1, characterized in that: The top end of the dosing cartridge (801) is fixed to the output end of the servo motor (7), the bottom end of the inside of the dosing cartridge (801) is connected to the inside of the dosing rod (802), and the diameter of the first gear rod (804) is the same as the diameter of the opening at the top end of the dosing rod (802).

3. The agitator for the liquid preparation system according to claim 1, characterized in that: The flow disturbance mechanism (9) comprises a stirring rod (901), a reciprocating screw (902) and a spiral blade (903); the stirring rod (901) is fixed to the outside of the dosing rod (802); the stirring rod (901) is movably connected to the reciprocating screw (902) inside; the spiral blade (903) is fixed to the outside of the reciprocating screw (902); a collar frame (904) is arranged outside the reciprocating screw (902); and a spoiler (905) is movably connected to the inside of the collar frame (904).

4. The agitator for the liquid preparation system according to claim 3, characterized in that: The stirring rods (901) are provided in a plurality of groups. The stirring rods (901) are symmetrically distributed about the central axis of the dosing rod (802). The outer wall of the reciprocating screw (902) is close to the inner wall of the stirring rod (901). The reciprocating screw (902) and the stirring rod (901) are rotationally connected.

5. The agitator for the liquid preparation system according to claim 3, characterized in that: The spoilers (905) are provided in a plurality of groups. The spoilers (905) are distributed at equal intervals about the central axis of the collar frame (904). The contact surface between the spoilers (905) and the collar frame (904) is a sphere. The spoilers (905) and the collar frame (904) are rotatably connected.

6. The agitator for the liquid dispensing system according to claim 1, characterized in that: The first dosing mechanism (10) comprises a first baffle (1001), a first dosing hole (1002) and a second dosing hole (1003); the first baffle (1001) is fixed inside a dosing rod (802); the first dosing hole (1002) is provided outside the dosing rod (802); the second dosing hole (1003) is provided outside the dosing rod (802); the first dosing block (1004) is movably connected inside the dosing rod (802); the second dosing block (1005) is movably connected inside the dosing rod (802); and a second cylinder (1006) is fixed outside the first dosing block (1004).

7. The agitator for the liquid preparation system according to claim 6, characterized in that: The first dosing hole (1002) and the second dosing hole (1003) are symmetrically distributed about the central axis of the dosing rod (802), the first dosing hole (1002) and the second dosing hole (1003) have the same diameter, the outer diameter of the first stopper (1004) is equal to the inner diameter of the first dosing hole (1002), and the outer diameter of the second stopper (1005) is equal to the inner diameter of the second dosing hole (1003).

8. The agitator for the liquid preparation system according to claim 7, characterized in that: The first stopper (1004) and the second stopper (1005) are symmetrically distributed about the central axis of the dosing rod (802).

9. The agitator for the liquid preparation system according to claim 1, characterized in that: The second drug-adding mechanism (11) comprises a second baffle (1101), a drug liquid through hole (1102) and a second gear rod (1103); the second baffle (1101) is fixed inside the drug-adding rod (802); a drug liquid through hole (1102) is provided inside the second baffle (1101); the inside of the drug-adding rod (802) is movably connected with the second gear rod (1103); a first electromagnet (1104) is fixed at the bottom end of the second gear rod (1103); a return spring (1105) is fixed at the bottom end of the second gear rod (1103); a second electromagnet (1106) is fixed at the bottom end of the inside of the drug-adding rod (802); and a third drug-adding hole (1107) is provided outside the drug-adding rod (802).

10. The agitator for the liquid preparation system according to claim 8, characterized in that: The diameter of the drug liquid through hole (1102) is equal to the diameter of the second gear rod (1103), the return spring (1105) is used to squeeze the second gear rod (1103) and keep it moving upward, and two groups of third drug adding holes (1107) are opened, and the third drug adding holes (1107) are symmetrically distributed about the central axis of the drug adding rod (802).

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