Intelligent dosing system

Abstract

The invention provides an intelligent dosing system, and relates to the field of water treatment. The intelligent dosing system comprises a main pipeline, the main pipeline is sequentially connected with a mixing cavity, a detection cavity and a circulating backflow cavity, a detection unit for detecting liquid numerical values is arranged in the detection cavity, one end of the mixing cavity is in one-way connection with an injection cavity, and the other end of the mixing cavity is in one-way connection with a circulating backflow cavity. And the injection cavity is connected and communicated with a reagent quantitative unit for quantitatively adding and adjusting a detection value. According to the intelligent dosing system, parameters of ultrapure water in the main pipeline are detected by virtue of the detection unit, a specified reagent is correspondingly fed, so that the detection value of the ultrapure water meets the requirement, the circulating reflux cavity and the mixing cavity are communicated by virtue of the circulating pump through closing the electromagnetic tee joint I and the electromagnetic tee joint II, and the ultrapure water circularly flows; and the first electromagnetic tee joint and the second electromagnetic tee joint are opened in an equal ratio, so that the ultrapure water mixed with the reagents can be gradually and uniformly discharged to a main pipeline, and the effect of adjusting the ultrapure water in a segmented manner is achieved.

Description

Technical Field

[0001] The invention relates to the field of water treatment, and in particular to an intelligent dosing system. Background Art

[0002] Ultrapure water is an indispensable core resource in the semiconductor manufacturing process. The quality of ultrapure water directly affects the chip yield, performance and production cost. In the operation and maintenance process of semiconductor ultrapure water systems, there are many disadvantages in manual dosing, especially in the face of extremely harsh water quality in the semiconductor industry, its limitations will be more significant. First, manual dosing relies on the operator's experience to estimate the dosage of the agent, and cannot respond to water quality parameters in real time, which can easily lead to excessive or insufficient agents. Secondly, in order to avoid the risk of excessive water quality, operators often tend to adopt the strategy of "better more than less", resulting in excessive use of chemicals such as oxidants and reductants, which significantly increases the operation and maintenance costs. Similarly, the addition of excessive agents will accelerate the scaling or corrosion of ultrapure water system components (such as reverse osmosis membranes and EDI modules) and shorten the life of the equipment. Finally, semiconductor factories need to ensure the supply of ultrapure water all day, and manual dosing needs to be done in shifts, which has high labor costs and is prone to operating errors due to fatigue.

[0003] After checking the public (announcement) number: CN220012167U, a dosing device for ultrapure water preparation is disclosed, including a first bracket, a water storage tank is installed on the top of the first bracket, and a water injection pipe is installed at one end of the bottom of the water storage tank; the water injection pipes are provided with three equal intervals, and a first control valve is installed at the end of each water injection pipe, and each first control valve is connected to the lower part of a mixing tank; the three mixing tanks are installed at the top of the second bracket, and the three mixing tanks are distributed at equal intervals; the technical solution is provided with a mixing tank, a motor and a stirring shaft, the mixing tank is a cylindrical structure as a whole, and a stirring shaft is installed inside each mixing tank, and a propeller-shaped agitator is provided at the bottom of the stirring shaft. After adding the medicine, the stirring shaft is driven by the motor to rotate highly, and a vortex can be formed inside the mixing tank, which is convenient for completing the mixing of the medicine in a short time, thereby improving the processing efficiency. The technical solution can make the medicine fully mixed, but in the process of ultrapure water preparation, it is not convenient to drain the ultrapure water to the outside of the pipeline for separate rotation and stirring. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an intelligent dosing system, which solves the dosing problem in the operation and maintenance process of the semiconductor ultrapure water system proposed in the above background technology.

[0005] To achieve the above object, the present invention is realized by the following technical solutions: An intelligent drug addition system includes a main pipeline, which is successively connected with a mixing cavity, a detection cavity, and a circulating reflux cavity. A detection unit for detecting liquid values is arranged inside the detection cavity. One end of the mixing cavity is unidirectionally connected with an injection cavity, and the injection cavity is connected and penetrated with a reagent metering unit for quantitatively adding and adjusting the detected value. The metering unit is connected and penetrated with a reagent storage unit for storing and adjusting the detected value. The circulating reflux cavity includes a one-in-two-out electromagnetic three-way valve 1. One end of the electromagnetic three-way valve 1 far from the main pipeline is connected and penetrated with a circulating pump. The mixing cavity includes a two-in-one-out electromagnetic three-way valve 2. The outlet end of the circulating pump is communicated with the inlet end of the electromagnetic three-way valve 2. The electromagnetic three-way valve 1 and the electromagnetic three-way valve 2 are opened in equal proportion.

[0006] Preferably, the storage unit includes a plurality of storage cavities. The bottom end of the storage cavity is connected and penetrated with a conduit. The output end of the conduit is connected and penetrated with a pressing opening valve. The output ends of a plurality of conduits are distributed in a semi-circular array. The metering unit includes a rotatable metering pump. The input end of the metering pump is connected and penetrated with a connecting pipe. One end of the connecting pipe far from the metering pump is connected and penetrated with an electromagnetic telescopic sleeve. The electromagnetic telescopic sleeve is connected and penetrated with the pressing opening valve. The output end of the metering pump is unidirectionally connected and penetrated with the injection cavity.

[0007] Preferably, a support frame is fixedly installed on the outer surface of the storage cavity. One end of the support frame is fixedly installed with a support plate. The metering pump is rotatably connected to the outer surface of the support plate. A rotating housing is fixedly installed on the outer surface of the metering pump. The rotating housing is rotatably connected to the support plate. A toothed ring is fixedly installed on the rotating shaft of the rotating housing. A stepping motor is fixedly installed on the surface of the support plate. A gear for controlling the rotation of the toothed ring is fixedly installed at the output end of the stepping motor.

[0008] Preferably, there is a storage cavity in the storage unit that is connected to the circulating reflux cavity. One end of the circulating reflux cavity is connected and penetrated with two throttle tubes. There is a temporary storage cavity at one end of the two throttle tubes far from the circulating reflux cavity. A communicating pipe is connected in the middle of the temporary storage cavity. The communicating pipe is connected and penetrated with the storage cavity. The inlet of the communicating pipe is located below the inside of the temporary storage cavity. An electromagnetic opening and closing valve is arranged at the inlet end of the communicating pipe.

[0009] Preferably, a swinging semi-ring is fixedly installed at the output end of the metering pump. A bearing cavity is sleeved on the outer surface of the swinging semi-ring. The bearing cavity is connected and penetrated with the injection cavity.

[0010] Preferably, the storage unit includes a sleeve. The output end of the sleeve is unidirectionally connected and penetrated with the injection cavity. The metering unit includes a piston pad 1 slidably connected inside the sleeve. A stepping push rod 1 is fixedly installed at the top end of the sleeve.

[0011] Preferably, the bottom end of the sleeve is connected to and penetrates through a piston sleeve in a one-way connection, and a second piston gasket is slidably connected inside the piston sleeve. A second stepping push rod is fixedly installed at the top end of the second piston gasket.

[0012] Preferably, a rotary closing unit is provided between the sleeve and the piston sleeve, and a first one-way conduction valve is provided between the rotary closing unit and the piston sleeve.

[0013] Preferably, a pump for extracting liquid is provided at the liquid inlet end of the injection cavity, and a second one-way conduction valve is provided between the pump and the injection cavity.

[0014] Preferably, the injection cavity and the mixing cavity are connected and penetrated through a one-way nozzle. A pressing plate is slidably connected inside the injection cavity, and a telescopic sleeve for controlling the up-and-down movement of the pressing plate is fixedly installed above the pressing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. For this intelligent chemical dosing system, the detection unit is relied on to detect the parameters of ultrapure water in the main pipeline, and the specified reagent is correspondingly put in so that the detected value of the ultrapure water meets the requirements. The first electromagnetic three-way valve and the second electromagnetic three-way valve are closed, and the circulating pump is used to connect the circulating return cavity and the mixing cavity and circulate the ultrapure water, so that the reagent in this part of the ultrapure water is evenly mixed. Then, the first electromagnetic three-way valve and the second electromagnetic three-way valve are opened proportionally, so that the water mixed with the reagent can be gradually and evenly discharged into the main pipeline, and thus the effect of segmentally adjusting the water quality can be achieved.

[0017] 2. For this intelligent chemical dosing system, the storage unit includes a plurality of storage cavities. The bottom end of the storage cavity is connected to and penetrates through a conduit, and the output end of the conduit is connected to and penetrates through a pressing and opening valve. The output ends of the plurality of conduits are distributed in a semi-circular array. The metering unit includes a rotatable metering pump. The input end of the metering pump is connected to and penetrates through a connecting pipe. One end of the connecting pipe away from the metering pump is connected to and penetrates through an electromagnetic telescopic sleeve. The electromagnetic telescopic sleeve is connected to and penetrates through the pressing and opening valve. The output end of the metering pump is connected to and penetrates through the injection cavity in a one-way connection. By rotating the metering pump by a specified angle, the metering pump can be connected to the corresponding distributed storage cavity, and a quantitative reagent can be discharged from the storage cavity by the metering pump.

[0018] 3. For this intelligent chemical dosing system, a swinging semi-ring is fixedly installed at the output end of the metering pump. A bearing cavity is sleeved on the outer surface of the swinging semi-ring. The bearing cavity is connected to and penetrates through the injection cavity. By providing the swinging semi-ring, the bearing cavity can be always covered during the swinging process and the connection between the metering pump and the bearing cavity can be ensured, so that the pipeline of the metering pump can be prevented from being bent.

[0019] 4. In this intelligent chemical dosing system, a storage cavity connected to the circulating reflux cavity is provided in the storage unit. One end of the circulating reflux cavity is connected to and penetrated by two throttle tubes. The other ends of the two throttle tubes away from the circulating reflux cavity are provided with a temporary storage cavity. A communicating pipe is connected to the middle of the temporary storage cavity. The communicating pipe is connected to and penetrates the storage cavity. The inlet of the communicating pipe is located below the interior of the temporary storage cavity. An electromagnetic opening and closing valve is provided at the inlet end of the communicating pipe. Through such a setting, a certain amount of ultrapure water can be extracted to flush the pipeline of the metering pump, thereby keeping the metering pump clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present invention;

[0021] Figure 2 It is a schematic connection diagram of the support frame of the present invention;

[0022] Figure 3 It is a schematic connection diagram of the metering pump of the present invention;

[0023] Figure 4 It is a schematic connection diagram of the pump of the present invention;

[0024] Figure 5 It is a schematic connection diagram of the injection cavity of the present invention;

[0025] Figure 6 It is a schematic connection diagram of the temporary storage cavity of the present invention;

[0026] Figure 7 It is a schematic connection diagram of the sleeve of the present invention.

[0027] In the figure: 1, main pipeline; 2, mixing cavity; 3, detection cavity; 4, circulating reflux cavity; 5, detection unit; 6, injection cavity; 7, quantitative unit; 8, storage unit; 9, electromagnetic three-way one; 10, circulating pump; 11, electromagnetic three-way two; 801, storage cavity; 802, conduit; 803, pressing opening valve; 701, metering pump; 702, connecting pipe; 703, electromagnetic telescopic sleeve; 804, support frame; 805, support plate; 704, rotating housing; 705, toothed ring; 706, stepping motor; 707, gear; 606, throttle tube; 708, temporary storage cavity; 709, communicating pipe; 710, electromagnetic opening and closing valve; 711, swinging half ring; 712, bearing cavity; 806, sleeve; 713, piston pad one; 714, stepping push rod one; 715, piston sleeve; 716, piston pad two; 717, stepping push rod two; 718, rotating closing unit; 719, one-way conduction valve one; 601, pump; 602, one-way conduction valve two; 603, one-way spray head; 604, pressing plate; 605, telescopic sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0029] In addition, in the present application, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0030] As Figures 1-6 shown, an intelligent chemical dosing system includes a main pipeline 1, which is successively connected with a mixing cavity 2, a detection cavity 3, and a circulating return cavity 4. Inside the detection cavity 3, there is a detection unit 5 for detecting liquid values. The detection unit 5 includes, but is not limited to, a pH detector, a water temperature detector, and a conductivity meter. One end of the mixing cavity 2 is unidirectionally connected to an injection cavity 6, and the injection cavity 6 is connected and penetrated by a reagent metering unit 7 for quantitatively adding and adjusting the detected value. The metering unit 7 is connected and penetrated by a reagent storage unit 8 for storing and adjusting the detected value. The reagent storage unit 8 stores a regulating reagent for the liquid. According to the value detected by the detection unit 5, the reagent metering unit 7 extracts and withdraws a specified amount of reagent from the reagent storage unit 8. The circulating return cavity 4 includes a one-in-two-out electromagnetic three-way valve 9. One end of the electromagnetic three-way valve 9 away from the main pipeline 1 is connected and penetrated by a circulating pump 10. The mixing cavity 2 includes a two-in-one-out electromagnetic three-way valve 11. The outlet end of the circulating pump 10 is communicated with the inlet end of the electromagnetic three-way valve 11, and the electromagnetic three-way valve 9 and the electromagnetic three-way valve 11 are opened in equal proportion. By relying on the detection unit 5 to detect the water quality parameters in the main pipeline 1, the corresponding specified reagent is put in so that the detected value of the ultrapure water meets the requirements. Then, the electromagnetic three-way valve 9 and the electromagnetic three-way valve 11 are closed, and the circulating pump 10 is used to connect the circulating return cavity 4 and the mixing cavity 2 and circulate the ultrapure water, so that the reagent in this part of the ultrapure water is mixed evenly. Then, the electromagnetic three-way valve 9 and the electromagnetic three-way valve 11 are opened in equal proportion, so that the water mixed with the reagent can be gradually and evenly discharged into the main pipeline 1, thereby achieving the effect of segmentally adjusting the water quality.

[0031] The storage unit 8 includes a plurality of storage cavities 801. The bottom end of the storage cavity 801 is connected and penetrated by a conduit 802. The output end of the conduit 802 is connected and penetrated by a press-open valve 803. The press-open valve 803 includes a sealing plug, a return spring for resetting the sealing plug, and a perforated ring plate for restricting the movement of the return spring. The perforated ring plate is fixedly pressed inside the conduit 802. By pressing the sealing plug, the sealing plug is displaced, and after displacement, the conduit 802 is connected. The output ends of the plurality of conduits 802 are distributed in a semi-circular array. The metering unit 7 includes a rotatable metering pump 701. The input end of the metering pump 701 is connected and penetrated by a connecting pipe 702. One end of the connecting pipe 702 away from the metering pump 701 is connected and penetrated by an electromagnetic telescopic sleeve 703. The electromagnetic telescopic sleeve 703 includes a sliding extrusion sleeve and a fixed magnetic ring on the outer surface of the extrusion sleeve. An electromagnetic ring is arranged inside the connecting pipe 702. The electromagnetic ring squeezes or attracts the fixed magnetic ring to move. The electromagnetic telescopic sleeve 703 is connected and penetrated with the press-open valve 803. The output end of the metering pump 701 is unidirectionally connected and penetrated with the injection cavity 6. By rotating the metering pump 701 by a specified angle, the metering pump 701 can be connected to the corresponding distributed storage cavity 801, and a quantitative reagent can be discharged from the storage cavity 801 through the metering pump 701.

[0032] A support frame 804 is fixedly installed on the outer surface of the storage cavity 801. One end of the support frame 804 is fixedly installed with a support plate 805. The metering pump 701 is rotatably connected to the outer surface of the support plate 805. A rotating housing 704 is fixedly installed on the outer surface of the metering pump 701. The rotating housing 704 is rotatably connected to the support plate 805. A toothed ring 705 is fixedly installed on the rotating shaft of the rotating housing 704. A stepping motor 706 is fixedly installed on the surface of the support plate 805. A gear 707 for controlling the rotation of the toothed ring 705 is fixedly installed at the output end of the stepping motor 706. By driving the gear 707 to rotate through the stepping motor 706, the toothed ring 705 can be driven to rotate, and further, it can be ensured that the metering pump 701 wrapped inside the rotating housing 704 can rotate by a specified angle.

[0033] Among the storage cavities 801 in the storage unit 8, there is a storage cavity 801 connected to the circulating reflux cavity 4. One end of the circulating reflux cavity 4 is connected and penetrated by two throttle tubes 606. A temporary storage cavity 708 is arranged at one end of the two throttle tubes 606 away from the circulating reflux cavity 4. A communicating pipe 709 is connected to the middle of the temporary storage cavity 708. The communicating pipe 709 is connected and penetrated with the storage cavity 801. The inlet of the communicating pipe 709 is located below the inside of the temporary storage cavity 708. An electromagnetic opening and closing valve 710 is arranged at the inlet end of the communicating pipe 709. Through such a setting, a certain amount of ultrapure water can be extracted to wash the pipeline of the metering pump 701, so as to keep the metering pump 701 clean.

[0034] The output end of the metering pump 701 is fixedly installed with a swinging half-ring 711. The outer surface of the swinging half-ring 711 is sleeved with a bearing cavity 712. The bearing cavity 712 is connected and communicated with the injection cavity 6. By setting the swinging half-ring 711, it can always cover the bearing cavity 712 during the swinging process and ensure the connection between the metering pump 701 and the bearing cavity 712, thus avoiding the bending of the pipeline of the metering pump 701.

[0035] A pump 601 for extracting liquid is provided at the liquid inlet end of the injection cavity 6. A one-way conduction valve two 602 is provided between the pump 601 and the injection cavity 6. The pump 601 can extract the liquid in the pipeline between the metering pump 701 and the pump 601 to avoid residue. The setting of the one-way conduction valve two 602 can prevent the liquid from flowing back.

[0036] The injection cavity 6 is connected and communicated with the mixing cavity 2 through a one-way nozzle 603. The one-way nozzle 603 includes a one-way valve and a nozzle which are communicated. A pressing plate 604 is slidably connected inside the injection cavity 6. Above the pressing plate 604, a telescopic sleeve 605 for controlling the up and down movement of the pressing plate 604 is fixedly installed. Through such a setting, the pressure in the injection cavity 6 can be increased by using the pressing plate 604, so that the liquid can be sprayed out from the one-way nozzle 603.

[0037] During use, the detection unit 5 detects some or a certain data anomaly and the anomaly value of the ultrapure water, closes the electromagnetic three-way one 9 and the electromagnetic three-way two 11, and starts the circulation pump 10 to circulate the ultrapure water. The type and amount of the reagent to be put in are determined through the anomaly value. The metering pump 701 is driven to rotate a specified angle and through specified metering. When the connecting pipe 702 of the metering pump 701 is aligned with the conduit 802, the electromagnetic telescopic sleeve 703 extends and presses the pressing opening valve 803, so that the conduit 802 and the connecting pipe 702 are communicated. The specified metering of the reagent is transported to the injection cavity 6 for temporary storage through the metering pump 701. The metering pump 701 is rotated, and the electromagnetic opening and closing valve 710 is opened. The temporary storage cavity 708 is used to extract a specified amount of ultrapure water through the metering pump 701 to wash the pipeline, and the ultrapure water is temporarily stored in the injection cavity 6. The pressing plate 604 moves downward to spray the reagent diluted with ultrapure water into the mixing cavity 2 through the one-way nozzle 603 to adjust the detection reading. The cycle continues until the detection value of this part of the ultrapure water is qualified, and the electromagnetic three-way one 9 and the electromagnetic three-way two 11 are slowly opened to discharge the treated ultrapure water and introduce new ultrapure water.

[0038] As Figure 6As shown in the figure, in the second embodiment, the storage unit 8 includes a sleeve 806. The output end of the sleeve 806 is unidirectionally connected and communicated with the injection cavity 6. The metering unit 7 includes a first piston pad 713 slidably connected inside the sleeve 806. A first stepping push rod 714 is fixedly installed at the top end of the sleeve 806. By moving the first stepping push rod 714 by a specified length, a specified amount of reagent can be discharged by using the first piston pad 713, so as to achieve the effect of quantitatively dispensing the reagent.

[0039] The bottom end of the sleeve 806 is connected and communicated with a piston sleeve 715 in a unidirectional and through manner. A second piston pad 716 is slidably connected inside the piston sleeve 715. A second stepping push rod 717 is fixedly installed at the top end of the second piston pad 716. Since the sleeve 806 is a storage container with a relatively large volume and the error after the movement of the first stepping push rod 714 is relatively large, a piston sleeve 715 of the same type with a small volume is provided to improve the accuracy of the device.

[0040] A rotary closing unit 718 is provided between the sleeve 806 and the piston sleeve 715. By providing the rotary closing unit 718, the sleeve 806 and the piston sleeve 715 can be closed when the sleeve 806 is replenished with the reagent. A first one-way conduction valve 719 is provided between the rotary closing unit 718 and the piston sleeve 715. By providing the first one-way conduction valve 719, liquid backflow can be avoided.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent drug dosing system, comprising a main pipeline (1), characterized in that: The main pipeline (1) is successively connected with a mixing cavity (2), a detection cavity (3), and a circulating reflux cavity (4). A detection unit (5) for detecting liquid values is arranged inside the detection cavity (3). One end of the mixing cavity (2) is unidirectionally connected with an injection cavity (6). The injection cavity (6) is connected and penetrated by a reagent metering unit (7) for quantitatively adding and adjusting the detection value. The metering unit (7) is connected and penetrated by a reagent storage unit (8) for storing and adjusting the detection value. The circulating reflux cavity (4) includes an electromagnetic three-way valve (9) with one inlet and two outlets. One end of the electromagnetic three-way valve (9) far from the main pipeline (1) is connected and penetrated by a circulating pump (10). The mixing cavity (2) includes an electromagnetic three-way valve (11) with two inlets and one outlet. The outlet end of the circulating pump (10) is communicated with the inlet end of the electromagnetic three-way valve (11). The electromagnetic three-way valve (9) and the electromagnetic three-way valve (11) are opened in equal proportion.

2. The intelligent drug dosing system according to claim 1, wherein: The storage unit (8) includes a plurality of storage cavities (801). The bottom end of the storage cavity (801) is connected and penetrated by a conduit (802). The output end of the conduit (802) is connected and penetrated by a pressing opening valve (803). The output ends of the plurality of conduits (802) are distributed in a semi-circular array. The metering unit (7) includes a rotatable metering pump (701). The input end of the metering pump (701) is connected and penetrated by a connecting pipe (702). One end of the connecting pipe (702) far from the metering pump (701) is connected and penetrated by an electromagnetic telescopic sleeve (703). The electromagnetic telescopic sleeve (703) is connected and penetrated with the pressing opening valve (803). The output end of the metering pump (701) is unidirectionally connected and penetrated with the injection cavity (6).

3. The intelligent drug addition system according to claim 2, characterized in that: A support frame (804) is fixedly installed on the outer surface of the storage cavity (801). One end of the support frame (804) is fixedly installed with a support plate (805). The metering pump (701) is rotatably connected to the outer surface of the support plate (805). A rotating housing (704) is fixedly installed on the outer surface of the metering pump (701). The rotating housing (704) is rotatably connected to the support plate (805). A toothed ring (705) is fixedly installed on the rotating shaft of the rotating housing (704). A stepping motor (706) is fixedly installed on the surface of the support plate (805). A gear (707) for controlling the rotation of the toothed ring (705) is fixedly installed at the output end of the stepping motor (706).

4. The intelligent drug dosing system according to claim 3, wherein: A storage cavity (801) connected to the circulating reflux cavity (4) is arranged in the storage unit (8). One end of the circulating reflux cavity (4) is connected and penetrated by two throttle pipes (606). A temporary storage cavity (708) is arranged at one end of the two throttle pipes (606) far from the circulating reflux cavity (4). A communication pipe (709) is connected to the middle of the temporary storage cavity (708). The communication pipe (709) is connected and penetrated with the storage cavity (801). The inlet of the communication pipe (709) is located below the inside of the temporary storage cavity (708). An electromagnetic opening and closing valve (710) is arranged at the inlet end of the communication pipe (709).

5. An intelligent drug dosing system according to claim 4, characterized in that: The output end of the metering pump (701) is fixedly installed with a swinging half-ring (711). The outer surface of the swinging half-ring (711) is sleeved with a bearing cavity (712), and the bearing cavity (712) is connected and communicated with the injection cavity (6).

6. The intelligent drug addition system according to claim 1, wherein: The storage unit (8) includes a sleeve (806), and the output end of the sleeve (806) is unidirectionally connected and communicated with the injection cavity (6); The metering unit (7) includes a first piston gasket (713) slidably connected inside the sleeve (806), and a first stepping push rod (714) is fixedly installed at the top end of the sleeve (806).

7. An intelligent drug dosing system according to claim 6, characterized in that: The bottom end of the sleeve (806) is connected and communicated with a piston sleeve (715) in a unidirectional connection and communication manner. A second piston gasket (716) is slidably connected inside the piston sleeve (715), and a second stepping push rod (717) is fixedly installed at the top end of the second piston gasket (716).

8. An intelligent drug dosing system according to claim 7, wherein: A rotary closing unit (718) is arranged between the sleeve (806) and the piston sleeve (715), and a first one-way conduction valve (719) is arranged between the rotary closing unit (718) and the piston sleeve (715).

9. An intelligent drug dosing system according to any one of claims 2-8, characterized in that: A pump (601) for extracting liquid is arranged at the liquid inlet end of the injection cavity (6), and a second one-way conduction valve (602) is arranged between the pump (601) and the injection cavity (6).

10. An intelligent drug dosing system according to claim 9, characterized in that: The injection cavity (6) is connected and communicated with the mixing cavity (2) through a one-way nozzle (603). A pressing plate (604) is slidably connected inside the injection cavity (6), and a telescopic sleeve (605) for controlling the up-and-down movement of the pressing plate (604) is fixedly installed above the pressing plate (604).

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