Liquid dispensing system

Abstract

The present application relates to a kind of liquid distribution systems, comprising: tank assembly, the tank assembly includes water inlet pipe and tank body, the tank body is equipped with first water inlet end and first water outlet end;First drive component, the first drive includes first pipe and first pump body, one end of the first pipe is communicated with the first water outlet end of the tank body, the first pump body is arranged on the first pipe, second drive component, the second drive includes second pipe and second pump body, both ends of the second pipe are connected in parallel to the first pipe, the second pump body is arranged on the second pipe.The above-mentioned liquid distribution system, when first pump body or second pump body needs to be overhauled and maintained when problem occurs, one set of drive component can be stopped, another set of drive component can continue normal work, so as not to affect the normal production work of water equipment, without overall shutdown, it is advantageous to ensure the working efficiency of liquid distribution system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biopharmaceutical equipment, in particular to a liquid distribution system. BACKGROUND

[0002] With the development of pharmaceutical technology, the process water and auxiliary process water in pharmaceuticals are mostly purified water and water for injection, both of which are produced by corresponding water production equipment in the water production room. At this time, the water produced is temporarily stored by entering the storage unit, and then the qualified purified water and water for injection in the storage unit are transported to each use point through the distribution system for the use of pharmaceutical process equipment and process flow by entering the modular distribution module and the distribution system throughout the pharmaceutical workshop.

[0003] In the prior art, the function of the distribution module is relatively single, and when the equipment is overhauled or maintained, the whole needs to be stopped, resulting in no water use in the back end, so that the whole stops, affecting the production efficiency. SUMMARY

[0004] Therefore, it is necessary to provide a liquid distribution system which can enrich the function of the distribution module and effectively ensure the overall system working efficiency during equipment maintenance.

[0005] The technical scheme is as follows: a liquid distribution system, comprising: a storage tank assembly, the storage tank assembly comprising a water inlet pipe and a tank body, the tank body being provided with a first water inlet end and a first water outlet end, one end of the water inlet pipe being in communication with the first water inlet end, and the other end of the water inlet pipe being used for introducing water for injection; a first drive assembly, the first drive assembly comprising a first pipe and a first pump body, one end of the first pipe being in communication with the first water outlet end of the tank body, the first pump body being arranged on the first pipe, and the other end of the first pipe being used for discharging water for injection to a water use end; and a second drive assembly, the second drive assembly comprising a second pipe and a second pump body, the two ends of the second pipe being connected in parallel to the first pipe, and the second pump body being arranged on the second pipe.

[0006] The above-mentioned liquid distribution system, in the working process, water for injection is stored in the tank body from the water inlet pipe, and the water in the tank body can be transported to the water use end for use through the driving action of the first pump body and the second pump body. In this way, when the first pump body or the second pump body needs to be overhauled and maintained, one set of drive assembly can be stopped, and the other set of drive assembly can continue to work normally, so that the normal production work of the water use equipment is not affected, and the whole does not need to be stopped, which is beneficial to ensure the working efficiency of the liquid distribution system.

[0007] In one of the embodiments, the first driving assembly further comprises a first pressure detecting member and a first valve, the first pressure detecting member and the first valve are respectively arranged on the first pipeline, the first pressure detecting member and the first valve are electrically connected, the first pressure detecting member is used for detecting the pressure in the first pipeline to open or close the first valve; the second driving assembly further comprises a second pressure detecting member and a second valve, the second pressure detecting member and the second valve are respectively arranged on the second pipeline, the second valve and the second pressure detecting member are electrically connected, the second pressure detecting member is used for detecting the pressure in the second pipeline to open or close the second valve.

[0008] In one of the embodiments, the liquid dispensing system further comprises a backflow assembly, the backflow assembly comprises a heat exchanger and a third pipeline, one end of the third pipeline is used for communicating with a water end, the other end of the third pipeline communicates with the first water inlet end of the tank body, the heat exchanger is arranged between the third pipeline, and the heat exchanger is used for heat exchange of water for injection.

[0009] In one of the embodiments, the backflow assembly further comprises an electrical conductivity detecting member, a third valve and a wastewater pipe, the electrical conductivity detecting member is arranged on the third pipeline, the wastewater pipe is communicated with the third pipeline and arranged between the electrical conductivity detecting member and the first water inlet end of the tank body, the third valve is arranged on the wastewater pipe, the electrical conductivity detecting member and the third valve are electrically connected, the electrical conductivity detecting member is used for detecting the electrical conductivity of the liquid in the third pipeline to open or close the third valve.

[0010] In one of the embodiments, the liquid dispensing system further comprises a sterilization assembly, the sterilization assembly comprises a fourth pipeline and a condensed water discharge pipe, the fourth pipeline is provided with an air inlet end and two air outlet ends, the air inlet end is used for communicating with a pure steam device, the two air outlet ends are respectively communicated with the first pipeline and the second pipeline, the condensed water discharge pipe is provided with two second water outlet ends, the two second water outlet ends are respectively communicated with the first pipeline and the second pipeline close to one side of the water end.

[0011] In one of the embodiments, the sterilization assembly further comprises a temperature detecting member, at least two fourth valves and at least two fifth valves, the temperature detecting member is arranged on the condensed water discharge pipe, one of the fourth valves is arranged between one of the air outlet ends and the first pipeline, the other of the fourth valves is arranged between the other of the air outlet ends and the second pipeline; one of the fifth valves is arranged between the first pipeline and one of the second water outlet ends, the other of the fifth valves is arranged between the second pipeline and the other of the second water outlet ends.

[0012] In one of the embodiments, the liquid distribution system further comprises a rust removal assembly, the rust removal assembly comprises a red rust detection member, a first reagent barrel and a third pump body, the first reagent barrel is detachably communicated with the first pipeline through a pipeline near the water end, the third pump body is arranged on the pipeline and located between the first pipeline and the first reagent barrel, the red rust detection member is arranged on the third pipeline, the first reagent barrel is used for placing a first rust removal agent, and the red rust detection member is used for detecting the rust rate in the third pipeline.

[0013] In one of the embodiments, the rust removal assembly further comprises a second reagent barrel and a fourth pump body, the second reagent barrel is communicated with the first pipeline through a pipeline and located between the first reagent barrel and the water end, and the fourth pump body is arranged on the pipeline and located between the second reagent barrel and the first pipeline; the liquid distribution system further comprises a gas replacement assembly, the gas replacement assembly comprises a fifth pipeline and a gas filter, one end of the fifth pipeline is used for communicating with the water inlet of the tank body, the other end of the fifth pipeline is used for introducing nitrogen or inert gas, and the gas filter is arranged on the fifth pipeline; the tank assembly further comprises an exhaust pipe and a breather, the exhaust pipe is communicated with the tank body, and the breather is arranged on the exhaust pipe.

[0014] In one of the embodiments, the tank assembly further comprises a residual oxygen monitoring member, the residual oxygen monitoring member is arranged on the tank body, and the residual oxygen monitoring member is used for monitoring the oxygen content in the tank body.

[0015] In one of the embodiments, the heat exchanger is provided with a cleaning port, the cleaning port is used for detachably communicating with the first reagent barrel through a pipeline, and the third pump body is located at the communication between the cleaning port and the first reagent barrel. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and are used to interpret the specific embodiments of the present application and their descriptions, and do not constitute improper limitations to the present application.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description can be used to obtain other drawings without creative labor by those skilled in the art.

[0018] Figure 1 The working principle diagram of the liquid distribution system in one of the embodiments;

[0019] Figure 2Fig. 1 is a schematic diagram of liquid flow direction when backflowing for the liquid dispensing system described in an embodiment.

[0020] Explanation of reference signs:

[0021] 100, liquid dispensing system; 110, tank assembly; 111, water inlet pipe; 112, tank body; 113, exhaust pipe; 114, breather; 115, residual oxygen monitoring element; 120, first driving assembly; 121, first pipe; 122, first pump body; 123, first pressure detecting element; 124, first valve; 130, second driving assembly; 131, second pipe; 132, second pump body; 133, second pressure detecting element; 134, second valve; 140, backflow assembly; 141, heat exchanger; 1411, cleaning port; 142, third pipe; 143, conductivity detecting element; 144, third valve; 145, waste water pipe; 146, flow meter; 150, sterilization assembly; 151, fourth pipe; 152, condensate drain pipe; 153, temperature detecting element; 154, fourth valve; 155, fifth valve; 156, trap; 160, rust removal assembly; 161, red rust detecting element; 162, first reagent barrel; 163, third pump body; 164, second reagent barrel; 165, fourth pump body; 170, TOC detector; 180, gas replacement assembly; 181, fifth pipe; 182, gas filter; 200, water for use end; 300, water for injection; 400, pure steam equipment; 500, nitrogen. DETAILED DESCRIPTION

[0022] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and it is therefore intended that the present application not be limited to the embodiments disclosed below.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of indications of the technical features indicated. Thus, the technical features defined with "first", "second", etc. can explicitly or implicitly include at least one of the technical features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0025] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0027] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0028] Please refer to Figure 1 , Figure 1Fig. 1 shows a working principle diagram of the liquid distribution system 100 according to an embodiment of the present application. The liquid distribution system 100 according to an embodiment of the present application comprises a storage tank assembly 110, a first driving assembly 120 and a second driving assembly 130. The storage tank assembly 110 comprises a water inlet pipe 111 and a tank body 112. The tank body 112 is provided with a first water inlet end and a first water outlet end. One end of the water inlet pipe 111 is in communication with the first water inlet end, and the other end of the water inlet pipe 111 is used for introducing the water for injection 300. The first driving assembly comprises a first pipe 121 and a first pump body 122. One end of the first pipe 121 is in communication with the first water outlet end of the tank body 112. The first pump body 122 is arranged on the first pipe 121, and the other end of the first pipe 121 is used for discharging the water for injection 300 to a water using end 200. For example, the water using end 200 is a water for injection 300 using device or purified water using device. The second driving assembly comprises a second pipe 131 and a second pump body 132. The two ends of the second pipe 131 are connected in parallel to the first pipe 121, and the second pump body 132 is arranged on the second pipe 131.

[0029] Specifically, the first pump body 122 and the second pump body 132 are sanitary centrifugal pumps. In this way, the cleanliness of the system and the production can meet the relevant hygiene standards.

[0030] During the working process of the above-mentioned liquid distribution system 100, the water for injection 300 is stored in the tank body from the water inlet pipe 111. Through the driving action of the first pump body 122 and the second pump body 132, the water in the tank body can be respectively delivered to the water using end 200 for use through the first pipe 121 and the second pipe 131. In this way, when the first pump body 122 or the second pump body 132 needs to be repaired and maintained, one of the driving assemblies can be stopped, and the other driving assembly can continue to work normally, so that the normal production of the water using device is not affected, and the whole machine does not need to be stopped, which is beneficial to ensure the working efficiency of the liquid distribution system 100.

[0031] Of course, the liquid can also comprise a third driving assembly, a fourth driving assembly, etc. Through the parallel connection of more than three pump bodies, the driving of the liquid can be realized, and the single working does not affect the normal operation of other pump bodies.

[0032] In one embodiment, please refer to Figure 1The first driving assembly 120 further comprises a first pressure detecting member 123 and a first valve 124. The first pressure detecting member 123 and the first valve 124 are arranged on the first pipeline 121 respectively, and the first pressure detecting member 123 is electrically connected with the first valve 124. The first pressure detecting member 123 is used for detecting the pressure in the first pipeline 121 to open or close the first valve 124. The second driving assembly 130 further comprises a second pressure detecting member 133 and a second valve 134. The second pressure detecting member 133 and the second valve 134 are arranged on the second pipeline 131 respectively, and the second valve 134 is electrically connected with the second pressure detecting member 133. The second pressure detecting member 133 is used for detecting the pressure in the second pipeline 131 to open or close the second valve 134. In this way, the liquid pressure in the first pipeline 121 and the second pipeline 131 is monitored by the first pressure detecting member 123 and the second pressure detecting member 133 respectively, so as to control the first valve 124 and the second valve 134, control the pipe network, and ensure that the overall pipeline has no overpressure risk.

[0033] Further, referring to Figure 1 , the first pressure detecting member 123 is electrically connected with the first pump body 122, and the second pressure detecting member 133 is electrically connected with the second pump body 132. In this way, the first pressure detecting member 123 can also control the first pump body 122, and adjust the working frequency of the first pump body 122 according to the size of the water pressure measurement value, so as to control the water pressure of the first pipeline 121. Similarly, the second pressure detecting member 133 can also control the second pump body 132, and automatically adjust the working frequency of the second pump body 132 according to the size of the water pressure measurement value, so as to control the water pressure of the second pipeline 131.

[0034] Specifically, referring to Figure 1 , the first valve 124 and the second valve 134 are both proportional regulating diaphragm valves. The first pressure detecting member 123 and the second pressure detecting member 133 are both sanitary diaphragm pressure transmitters. The measurement range is 0-10 bar. In this way, the proportional regulating mode is beneficial to improve the regulation accuracy, so as to improve the control accuracy of the pressure. The use of the sanitary diaphragm pressure transmitter is beneficial to meet the sanitary standard of the food industry, and is beneficial to improve the product quality.

[0035] Referring to Figure 1 and Figure 2 , Figure 2 shows the liquid flow direction schematic diagram of the liquid distribution system 100 in the embodiment of the application when backflowing. Wherein, Figure 2The bold line in the figure indicates the backflow path of the water for injection in the system, which enters the liquid distribution system 100 from the water end 200. In one embodiment, the liquid distribution system 100 further comprises a backflow assembly 140. The backflow assembly 140 comprises a heat exchanger 141 and a third pipeline 142, one end of which is connected to the water end 200 and the other end of which is connected to the first water inlet end of the tank body 112. The heat exchanger 141 is arranged between the third pipeline 142 and is used to heat the water for injection 300. In this way, after the water output from the first pipeline 121 to the water end 200 is used by the use point, part of the water flows back to the storage tank through the third pipeline 142 and heats the water for injection 300 through the heat exchanger 141, thereby entering the storage tank, ensuring that the water in the entire liquid distribution system 100 is in a flowing state, avoiding the growth of microorganisms due to the non-flowing of water, and ensuring product quality.

[0036] In one embodiment, referring to Figure 2 , the backflow assembly 140 further comprises an electrical conductivity detection member 143, a third valve 144, and a waste water pipe 145. The electrical conductivity detection member 143 is arranged on the third pipeline 142, the waste water pipe 145 is connected to the third pipeline 142 and is arranged between the electrical conductivity detection member 143 and the first water inlet end of the tank body 112, and the third valve 144 is arranged on the waste water pipe 145. The electrical conductivity detection member 143 and the third valve 144 are electrically connected, and the electrical conductivity detection member 143 is used to detect the electrical conductivity of the liquid in the third pipeline 142 to open or close the third valve 144. In this way, after the backflow water is heated by the heat exchanger 141, the electrical conductivity detector detects the electrical conductivity of the water, and when the electrical conductivity meets the corresponding backflow parameters required by the workshop, the third valve 144 is opened to allow the liquid to flow back to the inside of the tank body 112. When the detected value does not meet the corresponding backflow parameters required by the workshop, the third valve 144 is opened to discharge the liquid from the waste water pipe 145, and the liquid is discharged into the tank body 112 for circulation after the value is detected to be qualified.

[0037] Specifically, the electrical conductivity detection member 143 is an electrical conductivity detector. The third valve 144 is a three-way pneumatic diaphragm valve. In this way, it is beneficial to improve the automatic control precision and accuracy and improve the work efficiency.

[0038] Further, referring to Figure 2 , the backflow assembly 140 further comprises a flow meter 146 arranged on the third pipeline 142, which is used to detect the flow of the liquid in the third pipeline 142. Specifically, the flow meter 146 is a sanitary flow meter 146. In this way, by monitoring the flow meter 146, it is beneficial to obtain the flow state of the liquid and improve the production stability.

[0039] In one embodiment, referring to Figure 1The liquid distribution system 100 further comprises a sterilization assembly 150. The sterilization assembly 150 comprises a fourth pipe 151 and a condensate discharge pipe 152. The fourth pipe 151 is provided with an inlet end for communicating with the pure steam device 400 and two outlet ends for communicating with the first pipe 121 and the second pipe 131 respectively. The condensate discharge pipe 152 is provided with two second outlet ends for communicating with the first pipe 121 and the second pipe 131 respectively near the water end 200. Since the devices and pipe fittings in contact with the water for injection 300 should be sterilized by pure steam or hot water when in use, the liquid distribution system 100 can be automatically sterilized by the sterilization assembly 150 without connecting other sterilization devices, which is beneficial to ensure the system hygiene and sterilization efficiency. After the first pump body 122 or the second pump body 123 is disassembled for maintenance and installed into the system, sterilization operation is needed. Pure steam is introduced into the system pipeline through the fourth pipe 151, and condensate is discharged from the condensate discharge pipe 152.

[0040] Further, referring to Figure 1 The sterilization assembly 150 further comprises a temperature detection member 153, at least two fourth valves 154 and at least two fifth valves 155. The temperature detection member 153 is arranged on the condensate discharge pipe 152. One of the fourth valves 154 is arranged between one of the outlet ends and the first pipe 121, and the other of the fourth valves 154 is arranged between the other of the outlet ends and the second pipe 131. One of the fifth valves 155 is arranged between the first pipe 121 and one of the second outlet ends, and the other of the fifth valves 155 is arranged between the second pipe 131 and the other of the second outlet ends. For example, the temperature detection member 153 is a temperature transmitter. The at least two fourth valves 154 are pneumatic diaphragm valves. The at least two fifth valves 155 are pneumatic diaphragm valves. In this way, the temperature in the pipeline is monitored by the temperature detection member 153, and a control program is set. For example, when the temperature reaches 121℃, sterilization is performed for 30min, and after sterilization is completed, the relevant valves are opened, and the double-pump operation is continued, so as to complete the sterilization operation after the pump body is maintained.

[0041] Further, referring to Figure 1 The sterilization assembly 150 further comprises a steam trap 156 arranged on the condensate discharge pipe 152. Specifically, the steam trap 156 is a thermal static steam trap 156. In this way, the steam trap 156 can play a role of blocking gas and discharging water, and improve the working efficiency of steam sterilization.

[0042] In one embodiment, referring to Figure 1The liquid distribution system 100 further comprises a rust removal assembly 160, which comprises a red rust detection member 161, a first reagent barrel 162 and a third pump body 163. The first reagent barrel 162 is detachably connected to the first pipeline 121 through a pipeline near the side of the water end 200. The third pump body 163 is arranged on the pipeline and located between the first pipeline 121 and the first reagent barrel 162. The red rust detection member 161 is arranged on the third pipeline 142. The first reagent barrel 162 is used for placing a first rust removal agent. The red rust detection member 161 is used for detecting the rust rate in the third pipeline 142. When the storage tank is filled with the injection water 300, the running temperature of the injection water 300 is 85-95℃, and the water production equipment is a multi-effect distillation water machine. Red rust may occur after long-time high-temperature operation. The rust on the surface of ironware is called red rust. It refers to the oxidation, metamorphosis and corrosion of iron and other metals to form an object, which is brittle, has many pores, is difficult to dissolve in water and does not react with water. It is dissolved in acid and reacts with acid. It is reduced by CO, H2, Al, C, Si and the like at high temperature. The relative molecular mass is 160. The system can automatically remove rust from the pipelines, valves and equipment inside the system through the rust removal assembly 160, without the need to additionally connect a rust removal device, which is conducive to improving the rust removal efficiency and ensuring the hygiene of the system. For example, the first rust removal agent is a Bohl's reagent. The third pump body 163 is a sanitary peristaltic pump. The first reagent barrel 162 is pumped into the pipeline through the third pump body 163, the system is rusted through water circulation, the waste water is discharged into the waste water pipeline 145, and the rust rate inside the pipeline is detected through the red rust detection member 161, so as to monitor the rust removal effect.

[0043] In one embodiment, referring to Figure 1 and Figure 2The rust removal assembly 160 further comprises a second reagent tank 164 and a fourth pump body 165. The second reagent tank 164 is connected to the first pipe 121 through a pipe and is between the first reagent tank 162 and the water end 200. The fourth pump body 165 is arranged on the pipe and is between the second reagent tank 164 and the first pipe 121. The liquid distribution system 100 further comprises a gas replacement assembly 180. The gas replacement assembly 180 comprises a fifth pipe 181 and a gas filter 182. One end of the fifth pipe 181 is used to communicate with the water inlet end of the tank body 112. The other end of the fifth pipe 181 is used to introduce nitrogen gas 500 or inert gas. The gas filter 182 is arranged on the fifth pipe 181. The tank assembly 110 further comprises an exhaust pipe 113 and a breather 114. The exhaust pipe 113 is communicated with the tank body 112. The breather 114 is arranged on the exhaust pipe 113. In this way, the second reagent tank 164 can accommodate additional rust removal agent, improving the rust removal effect. In addition, when part of the reagent is used, the air in the exhaust system needs to be removed. The air replacement assembly can introduce nitrogen gas 500 or inert gas into the system pipeline, discharge the air in the pipeline from the exhaust pipe 113, and filter impurities and moisture through the breather 114, thereby meeting the use conditions of special rust removal reagents.

[0044] Further, referring to Figure 1 The tank body 112 assembly further comprises a residual oxygen monitoring member 115 arranged on the tank body 112. The residual oxygen monitoring member 115 is used to monitor the oxygen content inside the tank body 112. For example, the residual oxygen monitoring member 115 is a residual oxygen monitor. In this way, the residual oxygen content is detected in real time by the residual oxygen monitoring member 115, so as to monitor the replacement effect of the gas replacement assembly 180 and ensure the working reliability of the rust removal process. After a certain time of rust removal cycle, the residual red rust in the water 300 for injection is monitored in real time by the red rust monitor. If there is no residual red rust, the cycle is stopped, and then the water is discharged from the discharge pipeline.

[0045] In one embodiment, referring to Figure 1 The liquid distribution system 100 further comprises a TOC detector 170 arranged on the third pipe 142 and between the tank body 112 and the heat exchanger 141. The TOC detector 170 is used to detect the TOC content in the liquid. Total organic carbon (TOC) is used to represent the total amount of organic matter in water in terms of carbon content, and the result is expressed in terms of mass concentration of carbon (C) (mg / L). Carbon is a common component of all organic matter and the main element that constitutes organic matter. The higher the TOC value of water, the higher the content of organic matter in water. Therefore, TOC can be used as an index to evaluate the organic pollution of water quality.

[0046] In one embodiment, referring to Figure 1The heat exchanger 141 is provided with a cleaning port 1411 for detachable communication with the first reagent barrel 162 through a pipeline, and the third pump body 163 is located at the communication between the cleaning port 1411 and the first reagent barrel 162. The medium in the shell side of the heat exchanger 141 is non-hygienic industrial steam, cooling water or refrigeration water. Due to the unclean characteristics, the shell side of the heat exchanger 141 may be washed for a long time, which may cause fouling phenomenon and reduce the heat exchange efficiency of the heat exchanger 141. Therefore, the cleaning port 1411 reserved on the shell side pipeline is used to add relevant verified cleaning agent to the first reagent barrel 162, so as to clean the shell side pipeline of the heat exchanger 141. The cleaning agent is delivered into the shell side by opening the third pump body 163, and the waste water after cleaning is discharged to the discharge pipeline through the relevant valve. After flushing for a certain period of time, the cleaning is completed. In this way, the high heat exchange efficiency can be maintained, and the frequency of replacing the heat exchanger 141 can be reduced.

[0047] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as within the scope of the present disclosure.

[0048] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A liquid dispensing system, characterized by, The liquid dispensing system comprises: a storage tank assembly comprising a water inlet pipe and a tank body, the tank body being provided with a first water inlet end and a first water outlet end, one end of the water inlet pipe being communicated with the first water inlet end, and the other end of the water inlet pipe being used for leading into the WFI; a first driving assembly comprising a first pipe and a first pump body, one end of the first pipe being communicated with the first water outlet end of the tank body, the first pump body being arranged on the first pipe, and the other end of the first pipe being used for discharging the WFI to a water using end; a second driving assembly comprising a second pipe and a second pump body, two ends of the second pipe being connected in parallel to the first pipe, and the second pump body being arranged on the second pipe; the first driving assembly further comprises a first pressure detecting element and a first valve, the first pressure detecting element and the first valve being arranged on the first pipe respectively, the first pressure detecting element and the first valve being electrically connected, the first pressure detecting element being used for detecting the pressure in the first pipe to open or close the first valve; the second driving assembly further comprises a second pressure detecting element and a second valve, the second pressure detecting element and the second valve being arranged on the second pipe respectively, the second valve and the second pressure detecting element being electrically connected, and the second pressure detecting element being used for detecting the pressure in the second pipe to open or close the second valve; the liquid dispensing system further comprises a backflow assembly, the backflow assembly comprising a heat exchanger and a third pipe, one end of the third pipe being used for being communicated with the water using end, the other end of the third pipe being communicated with the first water inlet end of the tank body, and the heat exchanger being arranged between the third pipes, and the heat exchanger being used for heat exchanging the WFI.

2. The liquid dispensing system of claim 1, wherein, the backflow assembly further comprises an electrical conductivity detecting element, a third valve and a wastewater pipe, the electrical conductivity detecting element being arranged on the third pipe, the wastewater pipe being communicated with the third pipe and being arranged between the electrical conductivity detecting element and the first water inlet end of the tank body, and the third valve being arranged on the wastewater pipe, the electrical conductivity detecting element and the third valve being electrically connected, and the electrical conductivity detecting element being used for detecting the electrical conductivity of the liquid in the third pipe to open or close the third valve.

3. The liquid dispensing system of claim 1, wherein, the liquid dispensing system further comprises a sterilization assembly, the sterilization assembly comprising a fourth pipe and a condensed water discharge pipe, the fourth pipe being provided with an air inlet end and two air outlet ends, the air inlet end being used for being communicated with a pure steam device, the two air outlet ends being communicated with the first pipe and the second pipe respectively, and the condensed water discharge pipe being provided with two second water outlet ends, the two second water outlet ends being communicated with the first pipe and the second pipe respectively and being close to the water using end.

4. The liquid dispensing system of claim 3, wherein, The sterilization assembly further comprises a temperature detecting member, at least two fourth valves and at least two fifth valves, the temperature detecting member is arranged on the condensate water discharge pipe, one of the fourth valves is arranged between one of the air outlet ends and the first pipeline, and the other of the fourth valves is arranged between the other of the air outlet ends and the second pipeline; one of the fifth valves is arranged between the first pipeline and one of the second water outlet ends, and the other of the fifth valves is arranged between the second pipeline and the other of the second water outlet ends.

5. The liquid dispensing system according to any one of claims 1-4, wherein, The liquid distribution system further comprises a rust removal assembly, the rust removal assembly comprises a red rust detecting member, a first reagent barrel and a third pump body, the first reagent barrel is detachably communicated with the first pipeline through a pipeline close to the water using end, the third pump body is arranged on the pipeline and located between the first pipeline and the first reagent barrel, and the red rust detecting member is arranged on the third pipeline; the first reagent barrel is used for placing a first rust removal agent, and the red rust detecting member is used for detecting a rust rate in the third pipeline.

6. The liquid dispensing system of claim 5, wherein, The rust removal assembly further comprises a second reagent barrel and a fourth pump body, the second reagent barrel is communicated with the first pipeline through a pipeline and located between the first reagent barrel and the water using end, and the fourth pump body is arranged on the pipeline and located between the second reagent barrel and the first pipeline; the liquid distribution system further comprises a gas replacement assembly, the gas replacement assembly comprises a fifth pipeline and a gas filter, one end of the fifth pipeline is used for communicating with the water inlet end of the tank body, the other end of the fifth pipeline is used for introducing nitrogen or inert gas, and the gas filter is arranged on the fifth pipeline; the tank assembly further comprises an exhaust pipe and a breather, the exhaust pipe is communicated with the tank body, and the breather is arranged on the exhaust pipe.

7. The liquid dispensing system of claim 5, wherein, The tank assembly further comprises a residual oxygen monitoring member, the residual oxygen monitoring member is arranged on the tank body, and the residual oxygen monitoring member is used for monitoring oxygen content in the tank body.

8. The liquid dispensing system of claim 5, wherein, The heat exchanger is provided with a cleaning port, the cleaning port is used for detachable communication with the first reagent barrel through a pipeline, and the third pump body is located at the communication between the cleaning port and the first reagent barrel.

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