CN216910115U

CN216910115U - Liquid filtration system is joined in marriage to water injection

Info

Publication number: CN216910115U
Application number: CN202123265353.9U
Authority: CN
Inventors: 张荣华; 范阳玉; 谭义勇; 陈耀进; 王荣
Original assignee: Xixiang Changjiang Animal Medicine Co ltd
Current assignee: Xixiang Changjiang Animal Medicine Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-07-08
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a water needle liquid preparation filtering system, relates to the technical field of medicament preparation, and particularly relates to the field of water needle preparation. The dissolving tank, the liquid preparation tank and the diluting preparation tank are connected in series, and the No. 1 buffer tank and the No. 2 buffer tank are connected in parallel. The utility model can realize synchronous filling of two water injection medicaments with different concentrations and dosages, and in the maintenance process of one buffer tank, the other buffer tank can continue filling operation, thereby realizing continuous production.

Description

Liquid filtration system is joined in marriage to water injection

Technical Field

The utility model relates to the technical field of medicament preparation, in particular to the field of preparation of water injection.

Background

The existing water needle liquid preparation filtering system adopts a liquid preparation tank and a buffer tank to complete liquid preparation, filtering and filling operations. When various solid medicaments need to be prepared, the solvent rates of different solid medicaments are different, the dissolving and mixing effects are poor, and the dissolving and stirring time needs to be prolonged. The operation of single buffer tank, when the medicament of the two kinds of concentration dosage forms of preparation filling, need accomplish the liquid medicine filling in the buffer tank, wash the sterilization again, join in marriage the liquid once more, just can carry out the filling operation of another concentration dosage form medicament, and is consuming time long, and production efficiency is low, need wash the maintenance in-process at the buffer tank simultaneously, can't carry out the filling operation, joins in marriage liquid filtration system low-usage.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to the defects in the prior art, and a main object of the present invention is to provide a filtering system for liquid injection, so as to overcome the defects in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a liquid filtration system is joined in marriage to water injection which characterized in that: the device comprises a dissolving tank, a liquid distribution tank, a diluting distribution tank, an injection water pipeline, a No. 1 buffer tank, a No. 2 buffer tank, a dissolving tank delivery pump, a liquid distribution tank delivery pump, a diluting distribution tank delivery pump, a liquid distribution pump outlet filter, a diluting distribution pump four-way connection valve group, an industrial steam pipeline, a pure steam pipeline, a nitrogen pipeline, a cooling water inlet pipeline and a cooling water return pipeline, wherein the injection water pipeline is connected with a liquid feeding pipeline at the top of the dissolving tank, an inlet pipeline of the dissolving tank delivery pump is connected with an outlet pipeline at the bottom of the dissolving tank, an outlet pipeline at the bottom of the dissolving tank delivery pump is connected with a liquid feeding pipeline at the top of the dissolving tank and a liquid feeding pipeline at the top of the liquid distribution tank, an outlet pipeline at the bottom of the diluting distribution tank is connected with an inlet pipeline of the liquid distribution tank delivery pump, an outlet pipeline at the top of the liquid distribution tank is connected with a liquid feeding pipeline at the top of the diluting distribution tank and a liquid distribution tank, the outlet of the conveying pump of the diluting and distributing tank is connected with a first interface of a four-way connecting valve group of the diluting and distributing pump, a fourth interface of the four-way connecting valve group of the diluting and distributing pump is respectively connected with a buffer tank No. 1 and a buffer tank No. 2 through pipelines, the buffer tank No. 1 and the buffer tank No. 2 are arranged in parallel, and the bottom outlets of the buffer tank No. 1 and the buffer tank No. 2 are respectively connected with filling equipment.

As a preferred scheme, No. 1 buffer tank top entry pipeline sets up an inlet valve, No. 1 buffer tank top circulation pipeline sets up a circulating valve, No. 2 buffer tank top entry pipeline sets up an inlet valve, No. 2 buffer tank top circulation pipeline sets up a circulating valve, the diluting and distributing tank top has a backward flow mouth, is equipped with No. 1 backward flow valve and No. 2 backward flow valve on the backward flow mouth.

As a preferred scheme, the No. 1 buffer tank inlet valve, the No. 1 buffer tank top circulating valve, the No. 2 buffer tank inlet valve, the No. 2 buffer tank top circulating valve, the No. 1 return valve and the No. 2 return valve are all pneumatic diaphragm valves.

As a preferred scheme, a No. 1 pneumatic diaphragm valve and a No. 2 pneumatic diaphragm valve are installed on a fourth interface of the four-way connecting valve group of the diluting and distributing pump, wherein the No. 1 pneumatic diaphragm valve is connected with an inlet valve of a No. 1 buffer tank, a circulating valve at the top of the No. 1 buffer tank and a return valve of the No. 1 buffer tank, and the No. 2 pneumatic diaphragm valve is connected with an inlet valve of the No. 2 buffer tank, a circulating valve at the top of the No. 2 buffer tank and a return valve of the No. 2 buffer tank.

Preferably, flexible hoses are arranged at the flanges of the body of the diluting tank and connected with all connected medium pipelines.

As a preferable scheme, a weighing device is installed at the bottom of the diluting and dispensing tank.

As a preferred scheme, the outer walls of the dissolving tank, the liquid preparation tank and the diluting preparation tank are provided with interlayers, pipelines at the upper parts of the interlayers are connected with an industrial steam pipeline and a cooling water return pipeline, and pipelines at the bottoms of the interlayers are connected with a cooling water inlet pipeline.

As a preferred scheme, a diluting and distributing tank top four-way connecting valve group is arranged at the top of the diluting and distributing tank, the first way is respectively connected with a liquid adding pipeline and a cleaning port pipeline at the top of the diluting and distributing tank, the second way is connected with a liquid distributing pump four-way connecting valve group, the third way is connected with an injection water pipeline, and the fourth way is connected with a diluting and distributing pump four-way connecting valve group.

As a preferred scheme, a liquid dispensing pump outlet filter is installed on an outlet pipeline of the liquid dispensing tank delivery pump, and a diluting pump outlet filter is installed on an outlet pipeline of the diluting tank delivery pump.

Preferably, the inlet pipeline at the top of the No. 1 buffer tank is provided with a filter with a 0.22 micron polytetrafluoroethylene filter element, and the inlet pipeline at the top of the No. 2 buffer tank is provided with a filter with a 0.22 micron polytetrafluoroethylene filter element.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and concretely, according to the technical scheme, the dissolving tank, the liquid preparation tank and the diluting preparation tank are connected in series for operation, the medicament which is difficult to dissolve is firstly dissolved in the dissolving tank, then the medicament in the dissolving tank is conveyed to the liquid preparation tank through the dissolving tank and is mixed with the medicament which is easy to dissolve in the liquid preparation tank, and finally the medicament is conveyed to the diluting preparation tank through the liquid preparation tank and is conveyed to the No. 1 buffer tank and the No. 2 buffer tank through the diluting preparation tank and the conveying pump after the concentration of the medicament in the diluting preparation tank is in accordance with the product quality standard. Because the No. 1 buffer tank and the No. 2 buffer tank are arranged in parallel, the two buffer tanks can simultaneously produce and fill the water injection medicament, and the filling rate is improved; the concentration of the liquid medicine in the diluting preparation tank can be adjusted to control the concentration difference of the liquid medicine in the No. 1 buffer tank and the No. 2 buffer tank, so that the two concentration doses of the water injection medicaments can be produced simultaneously, and the synchronous filling can be carried out; in addition, in the process of stopping production and overhauling of one buffer tank, the other tank can continue to carry out filling operation, so that the aim of continuous production of the liquid preparation filtering system is fulfilled.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic view of a filtering system for a liquid injection system according to an embodiment of the present invention.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is an enlarged view at B in fig. 1.

Fig. 4 is an enlarged view at C in fig. 1.

Fig. 5 is an enlarged view at D in fig. 1.

Fig. 6 is an enlarged view at E in fig. 1.

The attached drawings indicate the following:

1. dissolving tank 2, liquid preparation tank 3, diluting preparation tank 4, injection water pipeline 5 and No. 1 buffer tank

6. No. 2 buffer tank 7, dissolving tank delivery pump 8, liquid preparation tank delivery pump 9 and diluting preparation tank delivery pump

10. Liquid dispensing pump outlet filter 11 and diluting pump outlet filter

12. Four-way connecting valve group 13 of diluting and distributing pump, industrial steam pipeline 14 and pure steam pipeline

15. A nitrogen pipeline 16, a cooling water inlet pipeline 17 and a cooling water return pipeline

21. Dissolving tank four-way connection valve group 22, liquid preparation tank four-way connection valve group 23, liquid preparation pump four-way connection valve group 24 and diluting preparation tank top four-way connection valve group

31. Nitrogen filter 32, nitrogen shut-off valve 33, No. 1 return valve 34, No. 2 return valve

41. Pneumatic diaphragm valve No. 1, No. 2

51. No. 1 buffer tank inlet valve 52, No. 1 buffer tank top circulating valve 55 and No. 1 buffer tank inlet filter

61. A buffer tank inlet valve No. 2 62, a buffer tank top circulation valve No. 2, and a buffer tank inlet filter No. 2.

Detailed Description

Referring to fig. 1 to 6, which show a preferred embodiment of the present invention, a filtering system for liquid injection preparation comprises a dissolving tank 1, a liquid preparation tank 2, a diluting preparation tank 3, an injection water pipeline 4, a No. 1 buffer tank 5, a No. 2 buffer tank 6, a dissolving tank delivery pump 7, a liquid preparation tank delivery pump 8, a diluting preparation tank delivery pump 9, a liquid preparation pump outlet filter 10, a diluting preparation pump outlet filter 11, a diluting preparation pump four-way connection valve set 12, an industrial steam pipeline 13, a pure steam pipeline 14, a nitrogen pipeline 15, a cooling water inlet pipeline 16, a cooling water return pipeline 17, wherein the injection water pipeline 4 is connected with a liquid adding pipeline at the top of the dissolving tank 1, an inlet pipeline of the dissolving tank delivery pump 7 is connected with an outlet pipeline at the bottom of the dissolving tank 1, an outlet pipeline of the dissolving tank delivery pump 7 is divided into two pipelines, one pipeline is connected with a liquid adding pipeline at the top of the dissolving tank 1, and the other pipeline is connected with a liquid adding pipeline at the top of the liquid preparation tank 2, the outlet pipeline at the bottom of the liquid distribution tank 2 is connected with the inlet pipeline of a liquid distribution tank delivery pump 8, the outlet pipeline of the liquid distribution tank delivery pump 8 is divided into two paths, one path is connected with a liquid adding pipeline at the top of the liquid distribution tank 2, the other path is connected with a liquid adding pipeline at the top of the thin distribution tank 3, the outlet pipeline at the bottom of the thin distribution tank 3 is connected with the inlet pipeline of a thin distribution tank delivery pump 9, the outlet of the thin distribution tank delivery pump 9 is connected with a thin distribution pump four-way connection valve group 12, the thin distribution pump four-way connection valve group 12 is provided with four interfaces, the first interface is connected with the outlet pipeline of the thin distribution tank delivery pump 9, the second interface is connected with the liquid adding pipeline at the top of the thin distribution tank 3, the third interface is connected with a pure steam pipeline 14, the fourth interface is divided into two paths to be respectively connected with the top pipelines of the buffer tank No. 1 and the buffer tank 6, the buffer tank 1 and the buffer tank 6 are arranged in parallel, and the top pipelines of the thin distribution pump four-way connection valve group 12 are jointly connected with the fourth interface, the top circulation pipeline of the diluting preparation tank is connected to the top return port pipeline of the diluting preparation tank 3, and the outlets at the bottoms of the No. 1 buffer tank 5 and the No. 2 buffer tank 6 are respectively connected with filling equipment.

It sets up pneumatic diaphragm valve on first and fourth interface in the four-way connecting valves 12 of rare pump that joins in marriage, 5 top entry pipelines of buffer tank No. 1 set up an

inlet valve

51, and 5 top circulation pipelines of buffer tank No. 1 set up a circulating

valve

52, 6 top entry pipelines of buffer tank No. 2 set up an

inlet valve

61, and 6 top circulation pipelines of buffer tank No. 2 set up a circulating valve 62, there is a backward flow mouth at 3 tops of rare jar of joining in marriage, is equipped with No. 1 backwash valve 33 and No. 2 backwash valve 34 on the backward flow mouth, No. 1 buffer tank top circulating valve 52, No. 2 buffer tank inlet valve 61, No. 2 buffer tank top 62, No. 1 backwash valve 33 and No. 2 backwash valve 34 are pneumatic diaphragm valve, be equipped with pneumatic diaphragm valve 41 No. 1 on the fourth interface of four-way connecting valves 12 of rare pump that joins in marriage, wherein pneumatic diaphragm valve 41 and 1 buffer tank 51 inlet valve 41 of buffer tank and No. 2 pneumatic diaphragm valve 42 are equipped with on the pneumatic diaphragm valve, The No. 1 buffer tank top circulating valve 52 is connected with the No. 1 return valve 33, and the No. 2 pneumatic diaphragm valve 42 is connected with the No. 2 buffer tank inlet valve 61, the No. 2 buffer tank top circulating valve 62 and the No. 2 return valve 34. Through opening pneumatic diaphragm valve 41 No. 1, buffer tank top circulating valve 52 and return valve 33 No. 1, realize the interior liquid medicine circulation replacement of 5 top pipelines of buffer tank No. 1, wait to open buffer tank inlet valve 51 No. 1 after the liquid medicine replacement is qualified in the pipeline, close buffer tank top circulating valve 52 No. 1, qualified liquid medicine gets into buffer tank 5 No. 1, and the liquid medicine product quality in the guarantee buffer tank 5 is stable. Through opening pneumatic diaphragm valve 42 No. 2, buffer tank top circulating valve 62 and No. 2 return valve 34, realize the interior liquid medicine circulation replacement of No. 2 buffer tank 6 top pipeline, wait to open buffer tank inlet valve 61 No. 2 after the liquid medicine replacement is qualified in the pipeline, close buffer tank top circulating valve 62 No. 2, qualified liquid medicine gets into buffer tank 6 No. 2, guarantees the liquid medicine product quality stability in the buffer tank 6 No. 2.

And flexible hoses are arranged at the flanges of the body of the diluting and distributing tank 3 and are connected with all connected medium pipelines. The bottom of the diluting preparation tank 3 is provided with a weighing device, the material in the diluting preparation tank 3 is weighed, the adding amount of the material in the diluting preparation tank 3 is accurately adjusted, and the product quality is guaranteed to be qualified.

A sampler is arranged on an outlet pipeline of the dissolving tank delivery pump 7, a sampler is arranged on an outlet pipeline of the liquid preparation tank delivery pump 8, and a sampler is arranged on an outlet of the diluting preparation tank delivery pump 9; and the quality of the product is dynamically monitored by sampling through a sampler.

Stirring paddles are arranged in the dissolving tank 1, the liquid preparation tank 2 and the diluting preparation tank 3, and the top of the dissolving tank, the liquid preparation tank and the diluting preparation tank are driven by a motor to rotate; the outer walls of the dissolving tank 1, the liquid preparation tank 2 and the diluting preparation tank 3 are provided with interlayers, pipelines at the upper parts of the interlayers are connected with an industrial steam pipeline 13 and a cooling water return pipeline 17, pipelines at the bottom parts of the interlayers are connected with a cooling water inlet pipeline 16, the purpose of adjusting the temperature in the tank is achieved by adjusting the using amounts of industrial steam and cooling water, and thermometers are respectively arranged at the bottom parts of the dissolving tank 1, the liquid preparation tank 2 and the diluting preparation tank 3; the top parts of the dissolving tank 1, the liquid preparation tank 2 and the diluting preparation tank 3 are respectively provided with a respirator for adjusting and balancing the internal and external pressure of the tanks; the top of the dissolving tank 1, the liquid preparation tank 2 and the diluting preparation tank 3 is provided with a cleaning opening, and a cleaning head is arranged inside the cleaning opening.

The top of the dissolving tank 1 is provided with a dissolving tank four-way connecting valve group 21, the first way is connected with a liquid adding pipeline at the top of the dissolving tank 1, the second way is connected with a cleaning opening pipeline at the top of the dissolving tank 1, the third way is connected with an injection water pipeline 4, and the fourth way is connected with an outlet of a dissolving tank delivery pump 7.

The top of the liquid preparation tank 2 is provided with a liquid preparation tank four-way connecting valve group 22, the first way is respectively connected with a liquid adding pipeline and a cleaning port pipeline at the top of the liquid preparation tank 2, the second way is connected with the outlet of the dissolving tank conveying pump 7, the third way is connected with a pure steam pipeline, and the fourth way is connected with the outlet pipeline of the liquid preparation tank conveying pump 8.

And a liquid distribution pump four-way connecting valve group 23 is arranged at the outlet of the liquid distribution tank conveying pump 8, the first way is connected with the outlet pipeline of the liquid distribution conveying pump 8, the second way is connected with the fourth way of the liquid distribution tank four-way connecting valve group 22, the third way is connected with a pure steam pipeline, and the fourth way is connected with the second way of the diluting distribution tank top four-way connecting valve group 24.

The top of the diluting and distributing tank 3 is provided with a diluting and distributing tank top four-way connecting valve group 24, the first way is respectively connected with a liquid adding pipeline and a cleaning port pipeline at the top of the diluting and distributing tank 3, the second way is connected with a liquid distributing pump four-way connecting valve group 23, the third way is connected with an injection water pipeline 4, and the fourth way is connected with a diluting and distributing pump four-way connecting valve group 12.

The pure steam pipeline 14 is provided with seven access points, the first access point is arranged on an injection water pipeline of a dissolving tank four-way connecting valve group 21 at the top of the dissolving tank 1, the second access point is arranged on a third pipeline of a liquid distribution tank four-way connecting valve group 22, the third access point is arranged on a third pipeline of a liquid distribution pump four-way connecting valve group 23, the fourth access point is arranged on a third injection pipeline of a diluting and distributing tank top four-way connecting valve group 24, the fifth access point is arranged on a third pipeline of a diluting and distributing pump four-way connecting valve group 12, the sixth access point is arranged on a top inlet pipeline of a buffer tank No. 1, and the seventh access point is arranged on a top inlet pipeline of a buffer tank No. 2. The steam is connected in multiple points, so that the independent use of steam blowing and sterilization of the tank bodies and the pump outlet inlet pipeline is realized, and the steam sterilization rate is increased. Preferably, set up pure steam access point respectively at 5 top inlet lines of buffer tank No. 1 and 6 top inlet lines of buffer tank No. 2, realize that No. 1

buffer tank

5 or 6 single jars of buffer tank No. 2 stop production and wash the maintenance, do not influence the use of another buffer tank and continue the filling operation, reach the purpose of serialization production.

The nitrogen pipeline 15 header pipe is provided with a nitrogen filter 31 with a 0.22 micron polytetrafluoroethylene filter element, the outlet pipeline of the nitrogen filter 31 is provided with three access points, the first access point is connected with a pure steam pipeline through a nitrogen stop valve 32, the second access point is connected with a nitrogen port of the liquid preparation tank 2, and the third access point is connected with a nitrogen port of the diluting preparation tank 3. Through the switch of the nitrogen stop valve 32, nitrogen can enter each access point of the liquid preparation filtering system by virtue of a pure steam pipeline, so that the nitrogen drying and purging process after the pure steam sterilization is finished is realized, and the cost for additionally laying the nitrogen pipeline is saved.

The liquid preparation pump outlet filter 10 is arranged on an outlet pipeline of the liquid preparation tank delivery pump 8, and a 0.45-micron polytetrafluoroethylene filter element is arranged in the filter; the outlet filter 11 of the diluting and distributing pump is arranged on an outlet pipeline of the conveying pump 9 of the diluting and distributing tank, and a polytetrafluoroethylene filter element of 0.45 micron is arranged in the filter.

No. 1 buffer tank 5 top inlet line is provided with a filter 55 of 0.22 micron polytetrafluoroethylene filter core, No. 2 buffer tank 6 top inlet line is provided with a filter 65 of 0.22 micron polytetrafluoroethylene filter core.

In summary, the design of the present invention is characterized in that three tanks, namely, a dissolving tank 1, a solution preparation tank 2 and a diluting preparation tank 3, are connected in series for operation, a poorly soluble drug is firstly dissolved in the dissolving tank 1, then the drug in the dissolving tank 1 is sent to the solution preparation tank 2 through a dissolving tank delivery pump 7, and is mixed with a soluble drug in the solution preparation tank 2, and finally the mixture is sent to the diluting preparation tank 3 through a solution preparation tank delivery pump 8, and the concentration of the drug in the diluting preparation tank 3 is adjusted, and is respectively sent to a buffer tank 1 and a buffer tank 2 through a diluting preparation tank delivery pump 9 after meeting the product quality standard. Because the No. 1 buffer tank 5 and the No. 2 buffer tank 6 are arranged in parallel, the two buffer tanks can simultaneously produce and fill the water injection medicament, and the filling rate is improved; or the concentration of the liquid medicine in the diluting preparation tank 3 can be regulated, the concentration difference of the liquid medicine in the buffer tank No. 15 and the buffer tank No. 2 is controlled, two concentration doses of the injection medicaments are produced at the same time, and the synchronous filling is carried out; in addition, in the process of stopping production and overhauling of one buffer tank, the other tank can continue to carry out filling operation, so that the aim of continuous production of the water needle liquid preparation filtering system is fulfilled.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. The utility model provides a liquid filtration system is joined in marriage to water injection which characterized in that: comprises a dissolving tank (1), a liquid distribution tank (2), a diluting and distributing tank (3), an injection water pipeline (4), a No. 1 buffer tank (5), a No. 2 buffer tank (6), a dissolving tank delivery pump (7), a liquid distribution tank delivery pump (8), a diluting and distributing tank delivery pump (9), a liquid distribution pump outlet filter (10), a diluting and distributing pump outlet filter (11), a diluting and distributing pump four-way connecting valve group (12), an industrial steam pipeline (13), a pure steam pipeline (14), a nitrogen pipeline (15), a cooling water inlet pipeline (16) and a cooling water return pipeline (17), wherein the injection water pipeline (4) is connected with a liquid feeding pipeline at the top of the dissolving tank (1), an inlet pipeline of the dissolving tank delivery pump (7) is connected with an outlet pipeline at the bottom of the dissolving tank (1), an outlet pipeline of the dissolving tank delivery pump (7) is connected with a liquid feeding pipeline at the top of the dissolving tank (1) and a liquid feeding pipeline at the top of the liquid distribution tank (2), the liquid distributor is characterized in that an outlet pipeline at the bottom of the liquid distribution tank (2) is connected with an inlet pipeline of a liquid distribution tank delivery pump (8), an outlet pipeline of the liquid distribution tank delivery pump (8) is connected with a liquid adding pipeline at the top of the liquid distribution tank (2) and a liquid adding pipeline at the top of the thin distribution tank (3), an outlet pipeline at the bottom of the thin distribution tank (3) is connected with an inlet pipeline of a thin distribution tank delivery pump (9), an outlet of the thin distribution tank delivery pump (9) is connected with a first interface of a thin distribution pump four-way connection valve set (12), a fourth interface of the thin distribution pump four-way connection valve set (12) is respectively connected with a buffer tank (5) and a top pipeline of a buffer tank (6), the buffer tank (5) and the buffer tank (6) are arranged in parallel, and outlets at the bottoms of the buffer tank (5) and the buffer tank (6) are respectively connected with filling equipment.

2. The system of claim 1, wherein the filter system comprises: no. 1 buffer tank (5) top entry pipeline sets up an inlet valve (51), and No. 1 buffer tank (5) top circulation pipeline sets up a circulating valve (52), No. 2 buffer tank (6) top entry pipeline sets up an inlet valve (61), and No. 2 buffer tank (6) top circulation pipeline sets up a circulating valve (62), there is a backward flow mouth at thin distribution tank (3) top, is equipped with No. 1 return valve (33) and No. 2 return valve (34) on the backward flow mouth.

3. The system of claim 2, wherein the filter system comprises: no. 1 buffer tank inlet valve (51), No. 1 buffer tank top circulating valve (52), No. 2 buffer tank inlet valve (61), No. 2 buffer tank top circulating valve (62), No. 1 return valve (33) and No. 2 return valve (34) are all pneumatic diaphragm valves.

4. The system of claim 1, wherein the filter system comprises: the four-way connecting valve group (12) of the diluting and distributing pump is provided with a pneumatic diaphragm valve (41) No. 1 and a pneumatic diaphragm valve (42) No. 2 on a fourth interface, wherein the pneumatic diaphragm valve (41) No. 1 is connected with an inlet valve (51) of a buffer tank No. 1, a top circulating valve (52) of the buffer tank No. 1 and a backflow valve (33) No. 1, and the pneumatic diaphragm valve (42) No. 2 is connected with an inlet valve (61) of the buffer tank No. 2, a top circulating valve (62) of the buffer tank No. 2 and a backflow valve (34) No. 2.

5. The system of claim 1, wherein the filter system comprises: and flexible hoses are arranged at the flanges of the body of the diluting and distributing tank (3) and are connected with all connected medium pipelines.

6. The system of claim 1, wherein the filter system comprises: and weighing equipment is arranged at the bottom of the diluting and distributing tank (3).

7. The system of claim 1, wherein the filter system comprises: the outer walls of the dissolving tank (1), the liquid preparation tank (2) and the diluting preparation tank (3) are provided with interlayers, an upper pipeline of each interlayer is connected with an industrial steam pipeline (13) and a cooling water return pipeline (17), and a bottom pipeline of each interlayer is connected with a cooling water inlet pipeline (16).

8. The system of claim 1, wherein the filter system comprises: the top of the diluting and distributing tank (3) is provided with a diluting and distributing tank top four-way connecting valve group (24), the first way is respectively connected with a liquid adding pipeline and a cleaning port pipeline at the top of the diluting and distributing tank (3), the second way is connected with a liquid distributing pump four-way connecting valve group (23), the third way is connected with an injection water pipeline (4), and the fourth way is connected with a diluting and distributing pump four-way connecting valve group (12).

9. The system of claim 1, wherein the filter system comprises: and a liquid distribution pump outlet filter (10) is arranged on an outlet pipeline of the liquid distribution tank delivery pump (8), and a diluting distribution pump outlet filter (11) is arranged on an outlet pipeline of the diluting distribution tank delivery pump (9).

10. The system of claim 1, wherein the filter system comprises: no. 1 buffer tank (5) top inlet line is provided with filter (55) of a 0.22 micron polytetrafluoroethylene filter core, and No. 2 buffer tank (6) top inlet line is provided with filter (65) of a 0.22 micron polytetrafluoroethylene filter core.