CN215274674U

CN215274674U - A sterilization pipeline structure for joining in marriage fluid reservoir

Info

Publication number: CN215274674U
Application number: CN202121468855.9U
Authority: CN
Inventors: 黄立诚; 孙日暖; 关曙晶; 孙欢
Original assignee: Honghe Pharmaceutical Co ltd
Current assignee: Honghe Pharmaceutical Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-12-24
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to the technical field of bio-pharmaceutical systems, in particular to a sterilization pipeline structure for a liquid distribution tank, which comprises a liquid distribution tank, a process supply pipeline, a drainage sewage pipeline, a discharge pipeline and a vacuum extractor; the number of the liquid preparation tanks is 2, the 2 liquid preparation tanks are connected with a process supply pipeline and a discharge pipeline in parallel, and the bottom ends of the 2 liquid preparation tanks are respectively connected with a hydrophobic sewage drainage pipeline; the tank bodies of the 2 liquid distribution tanks are respectively provided with a vacuumizing device; the process supply pipeline comprises an injection water supply pipeline, a third diaphragm valve, a first thermometer and a diaphragm tee joint are sequentially installed on a pipeline of the injection water supply pipeline, which leads to the liquid distribution tank, one end of the diaphragm tee joint is also fixedly connected with a sixth diaphragm valve, and a drainage hose is externally inserted into the sixth diaphragm valve. The utility model discloses can solve because steam circulation nature and the drainage of congealing water are relatively poor, lead to leading to the inhomogeneous problem of injection water pipeline sterilization temperature of joining in marriage the fluid reservoir, further improve sterilization effect.

Description

A sterilization pipeline structure for joining in marriage fluid reservoir

Technical Field

The utility model relates to a bio-pharmaceuticals technical field especially relates to a sterilization pipeline structure for joining in marriage fluid reservoir.

Background

In the technical field of biopharmaceutical systems, a liquid preparation system generally comprises devices such as a process control system, a liquid preparation tank, a preparation filtering system and the like and pipeline structures thereof, and can realize the control of the process processes such as CIP (in-line cleaning) and SIP (in-line disinfection). The liquid preparation tank is a mixing and stirring container for mixing one or more materials according to a process proportion, CIP mainly utilizes purified water and water for injection to flush a liquid preparation system, and SIP mainly performs high-temperature pure steam sterilization on the liquid preparation system.

In the prior art, as shown in fig. 1, in order to ensure the quality and safety of the product, before the liquid medicine is prepared, a liquid preparation system needs to be cleaned, sterilized and sterilized, the liquid preparation system is firstly roughly washed by purified water in a purified water supply pipeline 5, then the liquid preparation system is finely washed by injection water in an injection water supply pipeline 4, and then the liquid preparation system is sterilized by high-temperature steam at 121 ℃ for 30 minutes by pure steam in a pure steam supply pipeline 6; after the liquid medicine is prepared, the compressed gas in the clean compressed gas supply pipeline 7 is used as power to convey the liquid medicine in the liquid preparation tank, and the liquid medicine enters the next procedure through the discharge pipeline 13.

In the prior art, when the liquid preparation system is used for sterilization, as steam circulation and condensed water discharge performance of the injection water pipeline 4 leading to the liquid preparation tank are poor, sterilization temperature and sterilization effect are easily affected, it is necessary to optimize the sterilization process of the section of the injection water pipeline 4, so that the sterilization temperature of the section of the injection water pipeline 4 is consistent with the sterilization temperature of the whole liquid preparation system, the sterilization temperature of each pipeline is uniform, the sterilization effect of the liquid preparation system is further improved, the safety of products is improved, and the risk of pollution of the products is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sterilization pipeline structure for joining in marriage fluid reservoir to the solution is when joining in marriage the sterilization of fluid system, because steam circulation nature and condensation discharge nature are relatively poor, leads to leading to the inhomogeneous problem of sterilization temperature who joins in marriage the injection water pipeline of fluid reservoir, further improves the sterilization effect of joining in marriage the fluid system.

In order to achieve the above object, the utility model provides a following technical scheme:

a sterilizing line structure for a fluid dispensing tank, comprising: the device comprises a liquid preparation tank, a process supply pipeline, a drainage sewage discharge pipeline, a discharge pipeline and a vacuumizing device; the number of the liquid preparation tanks is 2, the liquid preparation tanks are respectively a first liquid preparation tank and a second liquid preparation tank, the 2 liquid preparation tanks are connected with a process supply pipeline and a discharge pipeline in parallel, and the bottom ends of the 2 liquid preparation tanks are respectively connected with a hydrophobic sewage drainage pipeline; the 2 tank bodies of the liquid preparation tanks are respectively provided with a vacuumizing device.

Furthermore, the process supply pipeline comprises an injection water supply pipeline, a third diaphragm valve, a first thermometer and a diaphragm tee joint are sequentially installed on a pipeline of the injection water supply pipeline, which leads to the liquid preparation tank, one end of the diaphragm tee joint is also fixedly connected with a sixth diaphragm valve, and the sixth diaphragm valve is externally plugged with a drainage hose.

Further, the vacuumizing device comprises a vacuum pump, a vacuumizing pipeline, a first pneumatic diaphragm valve and a vacuum gauge, the vacuum pump is connected with the liquid distribution tank through the vacuumizing pipeline, the first pneumatic diaphragm valve is arranged on the vacuumizing pipeline close to the liquid distribution tank, and the vacuum gauge is arranged on a tank body of the liquid distribution tank.

Further, the liquid preparation tank comprises an end cover and a tank body; a feed inlet, a process inlet and an observation sight glass are arranged on an end cover of the liquid preparation tank; the process inlet is connected with the process supply pipeline, and a rotary spraying ball is inserted into the process inlet; a heat-preservation jacket is arranged on the periphery of the tank body of the liquid preparation tank; the bottom of joining in marriage the fluid reservoir is provided with 2 supports and 1 discharge gate, tank bottoms valve is connected to the discharge gate, be provided with a magnetic stirrer between discharge gate and the support.

Furthermore, the process supply pipeline also comprises a pure steam supply pipeline, a purified water supply pipeline and a clean compressed gas supply pipeline, and the injection water supply pipeline, the steam supply pipeline, the purified water supply pipeline and the clean compressed gas supply pipeline are mutually connected in parallel and are connected with the process inlet of the liquid preparation tank in a converging manner.

Furthermore, diaphragm valves for opening and closing are arranged on the pure steam supply pipeline and the purified water supply pipeline close to the liquid distribution tank, and a second pneumatic diaphragm valve, a pressure gauge and a pressure regulating valve are sequentially arranged on the clean compressed gas supply pipeline far away from the liquid distribution tank.

Furthermore, one end of the injection water supply pipeline, which is far away from the liquid preparation tank, is mutually intersected and communicated with the injection water main pipeline and the cooled injection water pipeline, and a third diaphragm valve, a second diaphragm valve and a first diaphragm valve are respectively arranged on the injection water supply pipeline, the injection water main pipeline and the cooled injection water pipeline close to the intersection points.

Furthermore, the drainage sewage pipeline comprises a sewage pipeline and a condensed water drainage pipeline, a tenth diaphragm valve is arranged on the sewage pipeline, and a drain valve is arranged on the condensed water drainage pipeline.

Furthermore, a second thermometer is arranged at the water inlet end of the sewage discharge pipeline, and a ninth diaphragm valve is arranged at the water inlet end of the condensed water drain pipeline.

Furthermore, a seventh diaphragm valve is arranged on a pipeline of the discharge pipeline, which leads to the bottom end of the first liquid preparation tank, and an eighth diaphragm valve is arranged on a pipeline of the discharge pipeline, which leads to the bottom end of the second liquid preparation tank.

Compared with the prior art, the utility model discloses the beneficial effect who realizes is:

(1) the utility model discloses after transforming, joining in marriage fluid reservoir water for injection intake pipeline department installation hydrophobic bypass, lead to joining in marriage fluid reservoir pipeline department installation diaphragm tee bend and sixth diaphragm valve at the water for injection, the drain hose is connected to the sixth diaphragm valve, close the third diaphragm valve on the water for injection intake pipeline during the sterilization, open the diaphragm tee bend, slightly open the valve of sixth diaphragm valve, can promote the timely emission of pure steam circulation and comdenstion water during the sterilization like this, and monitor the sterilization temperature of this section water for injection pipeline through first thermometer, make it unanimous with joining in marriage liquid system sterilization temperature, when all pipelines of joining in marriage liquid system sterilization all reach sterilization temperature 121 ℃, sterilize 30 minutes, thereby reduce the risk that the water for injection pipeline sterilization temperature is inhomogeneous and produce the pollution to the product, further improve the sterilization effect, improve the product security;

(2) the utility model discloses after reforming transform, join in marriage the liquid system and increased evacuating device, before pure steam sterilization, carry out the evacuation through evacuating device to joining in marriage the fluid reservoir and the pipeline that communicates earlier, can effectively discharge the cold air in joining in marriage the fluid reservoir jar body and the pipeline like this, further promote the circulation of pure steam, make pure steam can fill whole joining in marriage the fluid reservoir jar body and pipeline completely, make whole liquid system of joining in marriage sterilization temperature reach unanimity, further ensured sterilization temperature, improved the sterilization effect;

(3) the utility model discloses reform transform the back, injection water supply line accesss to install third diaphragm valve, first thermometer and diaphragm tee bend in proper order on the pipeline of joining in marriage the fluid reservoir, first thermometer is placed at the preceding intercommunication injection water main line of diaphragm tee bend and the cooling back injection water line, through adjusting the diaphragm valve switching of injection water main line and the cooling back injection water line, can control the injection water that gets into comes from the injection water main line of high temperature cycle (80 ℃ -85 ℃) or comes from the cooling back injection water line through heat exchanger cooling treatment (25 ℃), also or open simultaneously and adjust the diaphragm valve of injection water main line and the cooling back injection water line, obtain the injection water of the required specific temperature after the mixture, and utilize first thermometer monitoring injection water's temperature, unqualified injection water can discharge through external drainage hose through the bypass that the diaphragm tee bend formed, the convenience and the safety of using the water for injection are realized;

(4) the utility model discloses reform transform the back, adopt 2 to join in marriage the fluid reservoir and pass through the pipeline parallelly connected, 2 join in marriage the fluid reservoir and can join in marriage liquid, washing and sterilization alone, can realize joining in marriage liquid work simultaneously or the intermittent type joins in marriage liquid work, simultaneously, when one of them joins in marriage the fluid reservoir and goes wrong, do not influence another and join in marriage fluid reservoir normal operating, can effectively improve work efficiency, guarantee work productivity.

Drawings

FIG. 1 is a schematic view of a prior art sterilization line configuration;

fig. 2 is a schematic view of a sterilization pipeline structure according to an embodiment of the present invention;

in the figure: 1-feed inlet, 2-sight glass, 3-diaphragm valve, 301-first diaphragm valve, 302-second diaphragm valve, 303-third diaphragm valve, 304-fourth diaphragm valve, 305-fifth diaphragm valve, 306-sixth diaphragm valve, 307-seventh diaphragm valve, 308-eighth diaphragm valve, 309-ninth diaphragm valve, 310-tenth diaphragm valve, 311-eleventh diaphragm valve, 312-twelfth diaphragm valve, 4-water for injection supply line, 401-water for injection after cooling line, 402-water for injection main line, 403-water drain hose, 5-pure vapor supply line, 6-purified water supply line, 7-clean compressed gas supply line, 8-pressure regulating valve, 9-pressure gauge, 10-first thermometer, 11-a second thermometer, 12-a rotary spray ball, 13-a discharge pipeline, 14-a heat preservation jacket, 15-a magnetic stirrer, 16-a liquid preparation tank, 1601-a first liquid preparation tank, 1602-a second liquid preparation tank, 17-a drain valve, 18-a drain drainage pipeline, 181-a drain drainage pipeline, 182-a condensate drain drainage pipeline, 19-a diaphragm tee, 20-a vacuum gauge, 21-a vacuum pump, 22-a tank bottom valve, 23-a process inlet, 24-a vacuum pumping pipeline, 25-a first pneumatic diaphragm valve and 26-a second pneumatic diaphragm valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 2, the utility model provides a sterilization pipeline structure for a liquid preparation tank, which comprises a liquid preparation tank 16, a process supply pipeline, a hydrophobic sewage drainage pipeline 18, a discharge pipeline 13 and a vacuum extractor; the number of the liquid preparation tanks 16 is 2, the liquid preparation tanks are respectively a first liquid preparation tank 1601 and a second liquid preparation tank 1602, the 2 liquid preparation tanks 16 are connected with a process supply pipeline and a material pipeline 13 in parallel, and the bottom ends of the 2 liquid preparation tanks 16 are respectively connected with a hydrophobic pollution discharge pipeline 18; the 2 liquid preparation tanks 16 are respectively provided with a vacuum extractor.

The purpose of this is: adopt 2 to join in marriage the fluid reservoir and pass through the pipeline parallelly connected, 2 join in marriage the fluid reservoir and can join in marriage liquid, washing and sterilization alone, can realize joining in marriage liquid work simultaneously or the liquid work is joined in marriage to the intermittent type, simultaneously, when one of them joins in marriage the fluid reservoir and go wrong, do not influence another and join in marriage fluid reservoir normal operating, can effectively improve work efficiency, guarantee work productivity.

The process supply pipeline comprises an injection water supply pipeline 4, a third diaphragm valve 303, a first thermometer 10 and a diaphragm tee 19 are sequentially installed on a pipeline of the injection water supply pipeline 4 leading to the liquid preparation tank 16, a sixth diaphragm valve 306 is further fixedly connected to one end of the diaphragm tee 19, and a drainage hose 403 is inserted and connected to the sixth diaphragm valve 306 in an outward inserting mode.

The purpose of this is: when the liquid preparation system is sterilized, the third diaphragm valve 303 is closed to block an injection water inlet pipeline, the diaphragm tee joint 19 is opened, the valve of the sixth diaphragm 306 is slightly opened to promote pure steam to flow to the pipeline, condensed water is timely discharged through the externally-connected drainage hose 403, meanwhile, the sterilization temperature of the section of injection water pipeline is monitored through the first thermometer 10 to be consistent with the sterilization temperature of the liquid preparation system, when all pipelines sterilized by the liquid preparation system reach the sterilization temperature of 121 ℃, sterilization is carried out for 30 minutes, so that the risk of pollution to products caused by nonuniform sterilization temperature of the injection water pipeline is reduced, and the safety of the products is improved.

The vacuumizing device comprises a vacuum pump 21, a vacuumizing pipeline 24, a first pneumatic diaphragm valve 25 and a vacuum gauge 20, the vacuum pump 21 is connected with the liquid distribution tank 16 through the vacuumizing pipeline 24, the vacuumizing pipeline 24 is provided with the first pneumatic diaphragm valve 25 close to the liquid distribution tank 16, and the vacuum gauge 20 is arranged on a tank body of the liquid distribution tank 16.

The purpose of this is: the liquid preparation system is additionally provided with the vacuumizing device, before pure steam sterilization, the liquid preparation tank 16 and the pipeline communicated with the liquid preparation tank are vacuumized through the vacuumizing device, so that cold air in the tank body and the pipeline of the liquid preparation tank 16 can be effectively discharged, the circulation of pure steam is further promoted, the pure steam can completely fill the tank body and the pipeline of the whole liquid preparation tank 16, the sterilization temperature of the whole liquid preparation system is consistent, the sterilization temperature is further guaranteed, and the sterilization effect is improved.

The liquid preparation tank 16 comprises an end cover and a tank body; the end cover of the liquid preparation tank 16 is provided with a feed inlet 1, a process inlet 23 and an observation sight glass 2; the process inlet 23 is connected with the process supply pipeline, and a rotary spraying ball 12 is inserted into the process inlet 23; a heat-insulating jacket 14 is arranged on the periphery of the tank body of the liquid preparation tank; the bottom of the liquid preparation tank 16 is provided with 2 supports and 1 discharge port, the discharge port is connected with a tank bottom valve 22, and a magnetic stirrer 15 is arranged between the discharge port and the supports.

The purpose of this is: when the liquid is prepared, the raw materials are added into the liquid preparation tank 16 through the feeding port 1, the injection water reaches the rotary spraying ball 12 through the process inlet 23, the liquid medicine is stirred and prepared through the magnetic stirring machine 15, and the preparation condition of the tank body of the liquid preparation tank 16 can be observed through the observation sight glass 2.

The process supply pipeline also comprises a pure steam supply pipeline 5, a purified water supply pipeline 6 and a clean compressed gas supply pipeline 7, and the injection water supply pipeline 4, the steam supply pipeline 5, the purified water supply pipeline 6 and the clean compressed gas supply pipeline 7 are mutually connected in parallel and are connected with a process inlet 23 of the liquid preparation tank 16 in a converging way; the pure steam supply pipeline 5 and the purified water supply pipeline 6 are both provided with diaphragm valves 3 for opening and closing close to the liquid distribution tank 16, and the pipeline of the clean compressed gas supply pipeline 7 far away from the liquid distribution tank 16 is sequentially provided with a second pneumatic diaphragm valve 26, a pressure gauge 9 and a pressure regulating valve 8.

The purpose of this is: when the liquid preparation system is sterilized, the twelfth diaphragm valve 312 is opened, the liquid preparation system is roughly washed by using purified water in the purified water supply pipeline 6, the twelfth diaphragm valve 312 is closed after rough washing is finished, the second diaphragm valve 302, the third diaphragm valve 303 and the diaphragm tee joint 19 are opened, the liquid preparation system is finely washed by using injection water in the injection water supply pipeline 4, the second diaphragm valve 302, the third diaphragm valve 303 and the diaphragm tee joint 19 are closed after fine washing is finished, the eleventh diaphragm valve 311 is opened, and the liquid preparation system is sterilized by using pure steam in the pure steam supply pipeline 5 for 30 minutes at the high temperature of 121 ℃; after the liquid medicine is prepared, the second pneumatic diaphragm valve 26 and the pressure gauge 9 are opened, the gas pressure is adjusted through the pressure adjusting valve 8, the liquid medicine in the liquid preparation tank is conveyed by using the clean compressed gas in the clean compressed gas supply pipeline 7 as power, and the liquid medicine enters the next working procedure through the discharge pipeline 13.

One end of the injection water supply pipeline 4 far away from the liquid preparation tank 16 is mutually intersected and communicated with an injection water main pipeline 402 and a cooled injection water pipeline 401, and a third diaphragm valve 303, a second diaphragm valve 302 and a first diaphragm valve 301 are respectively arranged on the injection water supply pipeline 4, the injection water main pipeline 402 and the cooled injection water pipeline 401 at the positions close to the intersection points; the main pipeline 402 for injection water is a U-shaped water consumption point pipeline of a high-temperature circulation pipeline of injection water, and the circulation temperature of the injection water is 80-85 ℃; the injection water line 401 after cooling provides injection water cooled to 25 ℃ by a heat exchanger.

The purpose of this is: the second diaphragm valve 302 of the injection water main pipeline 402 and the first diaphragm valve 301 of the cooled injection water pipeline 401 can be adjusted to be opened and closed, so that the entering injection water comes from the injection water main pipeline 402 with high-temperature circulation or from the cooled injection water pipeline 401 after cooling treatment, or the first diaphragm valve 301 and the second diaphragm valve 302 can be opened and adjusted at the same time, the mixed injection water with the required specific temperature is obtained, the temperature of the injection water is monitored by using the first thermometer 10, and the unqualified injection water can be discharged out of the system through a bypass formed by the diaphragm tee joint 19 through the external drainage hose 403.

The drainage sewage discharge pipeline 18 comprises a sewage discharge pipeline 181 and a condensed water drainage pipeline 182, a diaphragm valve 310 is arranged on the sewage discharge pipeline 181, and a drain valve 17 is arranged on the condensed water drainage pipeline 182;

the purpose of this is: when the liquid preparation system is cleaned, the tenth diaphragm valve 310 on the sewage discharge pipeline 181 is opened, so that the wastewater after rough cleaning and fine cleaning is discharged to a sewer main pipeline through the sewage discharge pipeline 181; when the liquid preparation system is sterilized by high-temperature pure steam, the drain valve 17 and the ninth diaphragm valve 309 on the condensate drain pipeline 182 are opened, so that steam condensate is discharged to the sewer main pipeline through the condensate drain pipeline 182.

The water inlet end of the sewage pipeline 181 is provided with a second thermometer 11, and the water inlet end of the condensed water drain pipeline 182 is provided with a ninth diaphragm valve 309.

The purpose of this is: the second thermometer 11 is arranged at the coldest end of the liquid preparation system device and is used for calculating the disinfection and sterilization duration; the water inlet end of the condensed water drain pipeline 182 is provided with a ninth diaphragm valve 309 for opening and closing, and when the drain valve 17 has a problem and is repaired, the condensed water drain pipeline 182 can be closed through the ninth diaphragm valve 309.

A seventh diaphragm valve 307 is arranged on a pipeline of the discharge pipeline 13 leading to the bottom end of the first liquid preparation tank 1601, and an eighth diaphragm valve 308 is arranged on a pipeline of the discharge pipeline 13 leading to the bottom end of the second liquid preparation tank 1602.

The purpose of this is: when a problem occurs in the tank bottom valve 22 of the liquid preparation tank 16, the on-off of the discharging pipeline 13 can be further controlled by a seventh diaphragm valve 307 and an eighth diaphragm valve 308 on the discharging pipeline 13.

The above description is only an example of the present application and is not intended to limit the present invention. Any modification, equivalent replacement, and improvement made within the scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A sterilization pipeline structure for a liquid preparation tank is characterized by comprising a liquid preparation tank (16), a process supply pipeline, a hydrophobic sewage drainage pipeline (18), a discharge pipeline (13) and a vacuum pumping device; the number of the liquid preparation tanks (16) is 2, the liquid preparation tanks are respectively a first liquid preparation tank (1601) and a second liquid preparation tank (1602), the 2 liquid preparation tanks (16) are connected with a process supply pipeline and a discharge pipeline (13) in parallel, and the bottom ends of the 2 liquid preparation tanks (16) are respectively connected with a hydrophobic pollution discharge pipeline (18); the tank bodies of the 2 liquid distribution tanks (16) are respectively provided with a vacuumizing device;

the process supply pipeline comprises an injection water supply pipeline (4), a third diaphragm valve (303), a first thermometer (10) and a diaphragm tee joint (19) are sequentially installed on a pipeline of the injection water supply pipeline (4) leading to the liquid preparation tank (16), one end of the diaphragm tee joint (19) is further fixedly connected with a sixth diaphragm valve (306), and a drainage hose (403) is outwards inserted into the sixth diaphragm valve (306).

2. A sterilization pipeline structure for a liquid distribution tank according to claim 1, characterized in that the vacuum pumping device comprises a vacuum pump (21), a vacuum pumping pipeline (24), a first pneumatic diaphragm valve (25) and a vacuum gauge (20), the vacuum pump (21) is connected with the liquid distribution tank (16) through the vacuum pumping pipeline (24), the vacuum pumping pipeline (24) is provided with the first pneumatic diaphragm valve (25) near the liquid distribution tank (16), and the vacuum gauge (20) is arranged on the tank body of the liquid distribution tank (16).

3. A sterilization pipeline structure for a dispensing tank as claimed in claim 1, characterized in that said dispensing tank (16) comprises an end cap and a tank body; a feed inlet (1), a process inlet (23) and an observation sight glass (2) are arranged on an end cover of the liquid preparation tank (16); the process inlet (23) is connected with the process supply pipeline, and a rotary spraying ball (12) is inserted into the process inlet (23); a heat-insulating jacket (14) is arranged on the periphery of the tank body of the liquid preparation tank (16); the bottom of the liquid preparation tank (16) is provided with 2 supports and 1 discharge hole, the discharge hole is connected with a tank bottom valve (22), and a magnetic stirrer (15) is arranged between the discharge hole and the supports.

4. A sterilization line structure for liquid dispensing tanks according to claim 1, characterized in that the process supply lines further comprise a pure steam supply line (5), a purified water supply line (6) and a clean compressed gas supply line (7), the injection water supply line (4), the steam supply line (5), the purified water supply line (6) and the clean compressed gas supply line (7) being connected in parallel to each other and converging to a process inlet (23) of the liquid dispensing tank (16).

5. A sterilization pipeline structure for a liquid preparation tank according to claim 4, characterized in that the pure steam supply pipeline (5) and the purified water supply pipeline (6) are provided with a diaphragm valve (3) for opening and closing near the liquid preparation tank (16), and the clean compressed gas supply pipeline (7) is provided with a second pneumatic diaphragm valve (26), a pressure gauge (9) and a pressure regulating valve (8) in sequence far from the liquid preparation tank (16).

6. A sterilization pipeline structure for a liquid dispensing tank according to claim 1, characterized in that one end of the injection water supply pipeline (4) far away from the liquid dispensing tank (16) is communicated with the injection water main pipeline (402) and the cooled injection water pipeline (401) in a mutual intersection manner, and the injection water supply pipeline (4), the injection water main pipeline (402) and the cooled injection water pipeline (401) are respectively provided with a third diaphragm valve (303), a second diaphragm valve (302) and a first diaphragm valve (301) near the intersection point.

7. A sterilization pipeline structure for a liquid dispensing tank according to claim 1, characterized in that the hydrophobic sewage line (18) comprises a sewage line (181) and a condensed water drain line (182), the sewage line (181) is provided with a tenth diaphragm valve (310), and the condensed water drain line (182) is provided with a drain valve (17).

8. A sterilization pipeline structure for liquid dispensing tanks according to claim 7, characterized in that the water inlet end of the sewage line (181) is provided with a second thermometer (11) and the water inlet end of the condensed water drain line (182) is provided with a ninth diaphragm valve (309).

9. A sterilization pipeline structure for liquid dispensing tanks according to claim 1, characterized in that a seventh diaphragm valve (307) is arranged on the pipeline of the discharge pipeline (13) leading to the bottom end of the first liquid dispensing tank (1601), and an eighth diaphragm valve (308) is arranged on the pipeline of the discharge pipeline (13) leading to the bottom end of the second liquid dispensing tank (1602).