Pipe cleaning system and application of production equipment in liquid food, industrial fermentation, pharmaceutical industry

Abstract

The utility model relates to liquid food, industrial fermentation, pharmaceutical industry processing equipment cleaning technical field provides a pipeline cleaning system and be applied to liquid food, industrial fermentation, pharmaceutical industry's production equipment, and pipeline cleaning system includes a plurality of liquid storage tanks, output pipeline, reflux pipeline and micro -nano bubble generating device, and the liquid storage tank is used for storing cleaning fluid, the output pipeline is connected with a plurality of liquid storage tanks's liquid outlet, and a plurality of liquid storage tanks are connected in parallel with output pipeline, the reflux pipeline is connected with a plurality of liquid storage tanks's liquid inlet, and a plurality of liquid storage tanks are connected in parallel with reflux pipeline, and micro -nano bubble generating device is located in output pipeline, and is located between a plurality of liquid storage tanks and the output of output pipeline. The pipeline cleaning system of the utility model, through parallel liquid storage tank structure combination micro -nano bubble generating device, utilize bubble physical impact to enhance the contact efficiency of cleaning fluid and pipeline inner wall, can effectively promote cleaning effect, reduce cleaning cost.

Description

Technical Field

[0001] This utility model relates to the field of cleaning technology for processing equipment in the liquid food, industrial fermentation, and pharmaceutical industries, and particularly to pipeline cleaning systems and production equipment applied to the liquid food, industrial fermentation, and pharmaceutical industries. Background Technology

[0002] Traditional liquid food processing, industrial fermentation, and pharmaceutical industries utilize closed tanks and pipelines for production and processing. Pipeline cleaning typically employs in-situ cleaning technology—CIP (Cleaning in Place). Traditional CIP cleaning relies heavily on the properties of chemical solvents such as acids and alkalis, combined with chemical engineering principles, to achieve cleaning through chemical reactions and dissolution. This method has significant limitations: First, the cleaning process is overly dependent on chemical agents, increasing production costs and potentially causing environmental pollution. Second, the development of CIP technology has primarily focused on expanding the types of cleaning agents available, lacking innovation at the level of process principles. Third, traditional cleaning processes rely mainly on the chemical action of cleaning agents, combined with mechanical design principles, to achieve cleaning through specific temperatures, mechanical scouring forces, and fixed contact times. However, this method has relatively low overall cleaning efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in related technologies. To this end, this invention proposes a pipeline cleaning system that utilizes a novel physical cleaning principle, aiming to improve the contact efficiency between the cleaning fluid and the inner wall of the pipeline, reduce reliance on chemical agents, and enhance cleaning flexibility.

[0004] This utility model also proposes a production equipment applicable to the liquid food, industrial fermentation, and pharmaceutical industries.

[0005] The pipeline cleaning system according to a first aspect of the present invention includes: Multiple liquid storage tanks, the liquid storage tanks being used to store cleaning fluid; An output pipeline is provided, which is connected to the outlet of a plurality of liquid storage tanks, and the plurality of liquid storage tanks are connected in parallel with the output pipeline. A return pipeline is provided, which is connected to the inlet of a plurality of liquid storage tanks, and the plurality of liquid storage tanks are connected in parallel with the return pipeline. A micro-nano bubble generator is provided in the output pipeline and located between the plurality of liquid storage tanks and the output port of the output pipeline.

[0006] According to the pipeline cleaning system of this utility model embodiment, the parallel storage tank structure combined with the micro-nano bubble generator enhances the contact efficiency between the cleaning liquid and the inner wall of the pipeline by utilizing the physical impact of bubbles, thereby reducing the use of chemical agents. At the same time, the multi-pipeline design can flexibly adapt to different cleaning needs, effectively improving the cleaning effect and reducing the cleaning cost.

[0007] According to one embodiment of the present invention, the pipeline cleaning system includes a cleaning pump, which is disposed in the output pipeline and located between the micro / nano bubble generator and the output port of the output pipeline.

[0008] According to one embodiment of the present invention, the output pipeline is provided with a sampling port or a drain port, and the sampling port or the drain port is located downstream of the micro-nano bubble generator in the direction of fluid flow in the output pipeline.

[0009] According to one embodiment of the present invention, the pipeline cleaning system includes at least two return pipelines, at least two output pipelines, and at least two micro / nano bubble generators. The at least two return pipelines are arranged in parallel, and the at least two output pipelines are arranged in parallel. Each micro / nano bubble generator is correspondingly located in one of the output pipelines.

[0010] According to one embodiment of the present invention, the output port of the output pipeline includes multiple target outlets, and the multiple target outlets are arranged in parallel.

[0011] According to one embodiment of the present invention, the plurality of liquid storage tanks include a clean water tank, a hot water tank, and a return tank, wherein the clean water tank, the hot water tank, and the return tank are arranged in parallel between the output pipeline and the return pipeline.

[0012] According to one embodiment of the present invention, the plurality of liquid storage tanks further include at least one of an acid tank and an alkali tank, wherein the acid tank and / or the alkali tank are arranged in parallel with the clean water tank, the hot water tank and the return tank between the output pipeline and the return pipeline.

[0013] According to one embodiment of the present invention, the pipeline cleaning system includes a water supply pipeline, which is connected to the outside and multiple liquid storage tanks.

[0014] According to one embodiment of the present invention, the total pressure of the micro / nano bubble generator is between 0.6 MPa and 0.8 MPa; And / or, the gas-liquid mixing ratio of the micro / nano bubble generator is between 9% and 11%.

[0015] According to a second aspect of the present invention, a liquid food production device includes a main body and the aforementioned pipe cleaning system, wherein the output pipe and the return pipe are respectively connected to the main body.

[0016] The liquid food production equipment according to the embodiments of this utility model includes the above-mentioned pipeline cleaning system, and therefore has all the technical effects of the above-mentioned pipeline cleaning system, which will not be repeated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the pipe cleaning system provided in an embodiment of the present invention.

[0020] Figure label: 1. Output pipeline; 2. Return pipeline; 3. Micro-nano bubble generator; 4. Cleaning pump; 5. Sampling port; 6. Output port; 7. Clean water tank; 8. Hot water tank; 9. Return tank; 10. Acid tank; 11. Alkali tank; 12. Water supply pipeline. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0024] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0026] In existing technologies, the traditional fluid food processing industry uses closed tanks and pipelines for production, and the cleaning process mainly relies on acid and alkali chemical solvents to remove dirt through chemical reactions. This chemically based cleaning method suffers from high solvent consumption and long cleaning cycles. With increasingly stringent environmental protection requirements, the technology route relying solely on chemical cleaning agents faces rising costs and wastewater treatment pressures.

[0027] Therefore, as Figure 1 As shown, this utility model proposes a pipeline cleaning system, including multiple liquid storage tanks. The output pipeline 1 is connected to the liquid outlet of the liquid storage tank and forms a parallel structure. The return pipeline 2 is connected to the liquid inlet of the liquid storage tank and forms a parallel structure. The micro-nano bubble generator 3 is set at the end of the output pipeline 1.

[0028] The storage tank refers to a container with independent storage function, which can be implemented using a stainless steel pressure vessel, used for the classified storage of different media such as clean water, hot water, or recycled liquid. Output pipeline 1 refers to the delivery channel connecting the storage tank and the object being cleaned, which can be implemented using a multi-way valve assembly in parallel to ensure that different media from the storage tanks can be output independently or mixed. Return pipeline 2 refers to the recovery channel connecting the object being cleaned and the storage tank, which can be implemented using a combination of branch pipes and a collector to form a closed-loop circulation path for the cleaning liquid. Micro / nano bubble generator 3 refers to a fluid processing device capable of generating bubbles with a diameter of less than 100 micrometers, which can be implemented using a vortex shear generator or other principles and devices. Common vortex shear generators disperse gas into micro / nano-sized bubbles through high-speed vortices.

[0029] For example, multiple parallel storage tanks are connected to the output pipeline 1 via independent valves, allowing operators to select single or combined cleaning media based on the type of contaminant. During the delivery of the cleaning fluid through the output pipeline 1, a high-density cluster of micro / nano bubbles is injected at the end. These bubbles collapse as they flow through the pipe to be cleaned, generating localized high-pressure shock waves that detach deposits from the pipe wall. The return pipeline 2 recovers the waste liquid carrying contaminants to the corresponding storage tank, where it is filtered, treated for sludge removal, and then re-enters the output pipeline 1 to form a circulating cleaning process. The parallel structure of the storage tanks avoids cross-contamination between cleaning fluids of different properties and supports multi-media collaborative cleaning operations.

[0030] It should be noted that when a large number of micro- and nano-bubbles are added to the water, the surface of these bubbles, acting as a hydrophobic interface, can also adhere to contaminants, thereby reducing the system's ΔG surface energy. Since most micro- and nano-bubbles possess buoyancy and are subjected to the impact of water, contaminants originally attached to the stainless steel surface will be carried away by the attached micro- and nano-bubbles, thus improving the cleaning effect. From the mechanism of micro- and nano-bubbles assisting in contaminant cleaning, it can be seen that a greater number of micro- and nano-bubbles can effectively increase the surface area in contact with contaminants, thereby improving the cleaning effect; a lower flow rate can increase the probability of micro- and nano-bubbles reaching and contacting contaminants, thus improving the cleaning effect; furthermore, removing micro- and nano-bubbles with contaminants attached to the water through filtration, flotation, and other processes can also effectively improve cleaning efficiency.

[0031] Understandably, this invention effectively reduces the amount of chemical solvents used during the cleaning process, or reduces the cleaning time or temperature, thereby reducing material consumption or improving efficiency. The continuous injection of micro-nano bubbles enhances the mechanical scouring effect on the inner wall of the pipe, exhibiting superior cleaning performance, especially for oily contaminants. The closed-loop circulation system reduces wastewater discharge, while the parallel structure of multiple storage tanks meets cleaning needs under complex working conditions.

[0032] According to one embodiment of the present invention, the pipeline cleaning system includes a cleaning pump 4, which is located in the output pipeline 1 and between the micro-nano bubble generator 3 and the output port 6 of the output pipeline 1.

[0033] The cleaning pump 4 is a device used to pressurize the liquid. Its installation position is limited to the pipe section between the micro / nano bubble generator 3 and the output port 6. It achieves a higher delivery pressure for the cleaning fluid through secondary pressurization. Downstream of the micro / nano bubble generator 3 refers to the pipeline area between the device outlet and the output port 6.

[0034] For example, the cleaning pump 4 increases the pressure of the cleaning liquid after the gas-liquid mixing is completed by the micro / nano bubble generator 3. The pressurized liquid creates a turbulent effect within the pipe. Because the pressurization operation occurs after bubble generation, the bubble size distribution and density are maintained, while the enhanced fluid dynamics significantly increase the shear force of the liquid on the pipe wall. The placement of the cleaning pump 4 prevents the bubbles from being mechanically squeezed and ruptured during the generation stage, ensuring the functional integrity of the micro / nano bubbles.

[0035] Understandably, this invention solves the problem of weakened flushing force caused by insufficient pressure in the cleaning fluid delivery system. Under turbulent conditions, the cleaning fluid containing micro-nano bubbles forms stronger turbulent motion in the pipeline, improving the peeling efficiency of the deposits on the pipe wall, while avoiding damage to the bubble structure during the pressurization process.

[0036] According to one embodiment of the present invention, the output pipeline 1 is provided with a sampling port 5 or a grounding port, which is located downstream of the micro-nano bubble generator 3.

[0037] Sampling port 5 refers to the opening structure used for collecting fluid samples. Specifically, it can be implemented using a quick-connect interface with an on / off valve. This structure allows for sample collection without interrupting fluid flow and enables the testing of bubble size and density. "Downstream" refers to the position in the fluid flow direction after the micro / nano bubble generator 3. This can be achieved by setting a sampling point on the outlet side of the device, a location chosen to ensure that the fluid has completed the gas-liquid mixing process. Optionally, sampling port 5 can also be used as a drain outlet.

[0038] For example, after the micro / nano bubble generator 3 completes gas-liquid mixing, the fluid enters the stable flow section of the output pipe 1. At this time, a representative fluid sample can be obtained by opening the valve of the sampling port 5. Since the sampling point is located behind the mixing device, the distribution state of the micro / nano bubbles in the collected sample is consistent with the state of the fluid entering the cleaning pipe, allowing the operator to directly judge the gas-liquid mixing efficiency based on the sample detection results. When the bubble concentration is detected to be below the preset threshold, the operating parameters of the micro / nano bubble generator 3 can be adjusted immediately, such as the gas injection rate or mixing pressure, thereby eliminating the decrease in cleaning efficiency caused by insufficient mixing.

[0039] Understandably, this invention can acquire fluid state data directly related to the cleaning effect in real time, avoid fluctuations in cleaning efficiency caused by deviations in gas-liquid mixing parameters, ensure the timeliness and accuracy of cleaning process parameter adjustments, and maintain the stability of cleaning quality.

[0040] According to one embodiment of the present invention, it includes at least two return pipes 2, at least two output pipes 1 and at least two micro / nano bubble generators 3, wherein the at least two return pipes 2 are arranged in parallel, the at least two output pipes 1 are arranged in parallel, and each micro / nano bubble generator 3 is correspondingly provided on one output pipe 1.

[0041] Among them, the parallel-connected return pipeline 2 can form multiple independent circulation loops to avoid mutual interference of fluid pressure during multi-channel cleaning. The parallel-connected output pipeline 1 supports the synchronous operation of different cleaning lines. Each output pipeline 1 is independently equipped with a micro-nano bubble generator 3 to ensure that the bubble generation parameters of each branch can be adjusted individually.

[0042] For example, multiple parallel return pipes 2 are connected to the storage tank and the main body of the equipment, forming independent liquid circulation paths. During the cleaning process, the fluids in each branch do not interfere with each other. Each parallel output pipe 1 is equipped with an independent micro-nano bubble generator 3, allowing each branch to adjust the bubble concentration and particle size according to the degree of contamination of the target pipe section. For example, in a scenario where two different pipes are cleaned simultaneously, the first output pipe 1 can be configured with high-concentration micro-nano bubble water for cleaning cold surface equipment pipes, while the second output pipe 1 uses a mixture of micro-nano bubbles and alkaline cleaning agent to treat heavily contaminated pipes or hot surface equipment. The two branches achieve differentiated operations through independently controlled micro-nano bubble generators 3. This multi-channel structure enables the system to process multiple cleaning tasks in parallel or to perform targeted cleaning of different pipe sections within a single device.

[0043] Understandably, this invention enables parallel execution of multiple cleaning operations, significantly improving the overall cleaning efficiency of the system. The independent control of micro-nano bubble parameters in each branch allows the system to adapt to cleaning needs with varying levels of contamination, avoiding the resource waste caused by traditional single-parameter cleaning. The multi-path independent circulation structure effectively prevents cross-contamination, ensuring fluid isolation between different cleaning tasks and meeting the stringent hygiene and safety requirements of food production equipment.

[0044] According to one embodiment of the present invention, the output port 6 of the output pipeline 1 includes multiple target outlets, which are arranged in parallel.

[0045] Among them, output port 6 of output pipeline 1 refers to the end interface used to deliver the cleaning fluid to the target to be cleaned. Specifically, it can be implemented using a branched pipe joint or a three-way valve structure, forming multiple independent channels through a diversion structure. The parallel setting of multiple target outlets means that each outlet is connected to the main pipeline through an independent branch.

[0046] For example, during a cleaning operation, the cleaning fluid is delivered via a main pipeline to multiple target outlets arranged in parallel, each outlet corresponding to an independent cleaning target.

[0047] Understandably, this invention enables simultaneous cleaning of multiple targets, thereby improving cleaning efficiency per unit time.

[0048] According to one embodiment of the present invention, a plurality of liquid storage tanks include a clean water tank 7, a hot water tank 8 and a return tank 9, which are arranged in parallel between the output pipeline 1 and the return pipeline 2.

[0049] Among them, the clean water tank 7 is a container for storing room-temperature clean water. It can be made of stainless steel and equipped with a liquid level sensor to monitor the liquid level, providing the basic physical rinsing medium. The hot water tank 8 is a container for storing heated liquid. It can have a double-jacketed structure and be connected to a steam heat source for temperature control, used for hot water disinfection. The return tank 9 is a container for collecting and temporarily storing recycled water from intermediate and final rinses, used for storing the initial rinse water for the target cleaning process. It can be made of corrosion-resistant materials to reduce cleaning fluid waste. The parallel connection means that the inlet and outlet of each storage tank are connected to the return pipeline 2 and the output pipeline 1 respectively through independent branches. An automatic anti-mixing valve assembly can be used to control the pipeline branches, preventing cross-contamination between different media during transportation.

[0050] For example, the clean water tank 7 delivers room temperature water to the cleaning area through the output pipe 1 to rinse away cleaning agent residue after acid and alkali cleaning; the hot water tank 8 switches to supply high temperature water in the later stage of cleaning for hot water disinfection. During the cleaning process, the micro-nano bubble generator 3 disperses gas into the liquid to form charged microbubbles, which enhance the cleaning effect through physical adsorption and reduce dependence on acid and alkali solvents.

[0051] According to one embodiment of the present invention, at least one of acid tank 10 and alkali tank 11 is added to the liquid storage tank group. Acid tank 10 or alkali tank 11 is connected in parallel with clean water tank 7, hot water tank 8 and return tank 9 between output pipeline 1 and return pipeline 2.

[0052] Acid tank 10 refers to a container used to store acidic cleaning solution, which can be a sealed tank made of corrosion-resistant material. Its function is to dissolve and clean alkaline residual dirt with acid. Alkali tank 11 refers to a container used to store alkaline cleaning solution, which can be a pressure vessel with an acid and alkali resistant coating. Its function is to neutralize and clean acidic dirt.

[0053] For example, a modular cleaning agent storage structure is formed by connecting at least one of the acid tank 10 and the alkali tank 11 in parallel with the basic functional tanks into the system. When inorganic scale is present in the pipeline, the acidic cleaning solution in the acid tank 10 is separately delivered to the cleaning area through the output pipeline 1 to neutralize the scale; when organic scale is present, the alkaline cleaning solution in the alkali tank 11 is used for physical and chemical treatment. Since each tank is independently connected in parallel, there is no need to empty the pipeline when switching cleaning agent types; the switching of cleaning agents can be completed simply by controlling the opening and closing of the valves of the corresponding tanks.

[0054] Understandably, this invention can expand the range of chemical types that can be selected for cleaning agents, improve the ability to treat acid and alkali stains, and enable on-demand switching of cleaning agent types during the cleaning process. This avoids pipe blockage or uncontrolled reaction caused by mixing cleaning solutions of different properties, thereby improving cleaning efficiency and ensuring the stability of system operation.

[0055] According to one embodiment of the present invention, the pipeline cleaning system includes a water supply pipeline 12, which is connected to the outside and multiple liquid storage tanks.

[0056] The water supply pipeline 12 refers to an independent pipeline structure used to supply external water to the storage tanks. Specifically, it can be implemented using metal or plastic pipes with flow control valves, and physically connected to each storage tank through branch interfaces. Connecting the external environment to multiple storage tanks means connecting the ends of the water supply pipeline 12 to the inlets of different storage tanks. This can be achieved using parallel tee joints or a branched pipeline structure, ensuring that each storage tank can independently receive external water.

[0057] For example, when the cleaning fluid level in the storage tank falls below a set threshold due to circulation consumption, the control valve on the water replenishment pipeline 12 is opened, allowing external water to simultaneously replenish the clean water tank 7, hot water tank 8, and return tank 9 through branch pipelines. The replenishment volume to different storage tanks can be controlled by adjusting the tank level, flow meter, and valve. This parallel connection between the water replenishment pipeline 12 and the storage tanks allows for fluid replenishment without interrupting the cleaning operation, while maintaining the independent operation of the main circulation pipeline.

[0058] Understandably, this utility model enables real-time replenishment of the liquid in the storage tank during the cleaning operation, avoiding system shutdown due to insufficient cleaning fluid; the centralized water replenishment pipeline 12 design reduces the complexity of pipeline layout; and by maintaining the dynamic balance of the liquid level in the storage tank, the continuous stability of the cleaning process is ensured.

[0059] According to one embodiment of the present invention, the total pressure of the micro-nano bubble generator 3 is controlled between 0.6 MPa and 0.8 MPa, and optionally, the gas-liquid mixing ratio is controlled between 9% and 11%.

[0060] The total pressure refers to the pressure of the fluid and gas mixed inside the micro / nano bubble generator 3. This pressure can be achieved by adjusting the power of the booster pump or the valve opening. This pressure range meets the energy threshold required for micro / nano bubble generation. The gas-liquid mixing ratio is the ratio of gas volumetric flow rate to liquid volumetric flow rate. This ratio can be achieved through the coordinated control of the gas flow meter and the liquid flow meter. This ratio range maintains a stable state of gas-liquid two-phase flow.

[0061] For example, when the total pressure reaches 0.6 MPa, the supersaturation of dissolved gas in the fluid reaches a critical value, causing the gas to precipitate in the form of micro- and nano-sized bubbles. When the total pressure does not exceed 0.8 MPa, premature bubble collapse or equipment seal failure due to excessive pressure can be avoided. Setting the gas-liquid mixing ratio to 9% can form a sufficiently dense cluster of micro- and nano-sized bubbles, while a mixing ratio not exceeding 11% prevents excessive gas content from causing gas-liquid stratification.

[0062] Understandably, this invention can enhance the physical removal of stains from the inner wall of pipes by utilizing the cavitation effect and surface activity of micro-nano bubbles without increasing the amount of chemical cleaning agent used, while avoiding equipment instability caused by uncontrolled pressure or gas-liquid ratio. During the cleaning process, the small and more uniformly distributed bubble size allows for thorough cleaning of pipe gaps, thereby improving cleaning efficiency and shortening the process cycle.

[0063] According to one embodiment of this utility model, a production device for liquid food, industrial fermentation, and pharmaceutical industries is proposed, comprising a main body of equipment and a pipeline cleaning system. An output pipeline 1 and a return pipeline 2 are respectively connected to the main body of equipment. The pipeline cleaning system includes multiple storage tanks, an output pipeline 1, a return pipeline 2, and a micro / nano bubble generator 3. The multiple storage tanks are connected in parallel with the output pipeline 1 and in parallel with the return pipeline 2. The micro / nano bubble generator 3 is disposed on the output pipeline 1 and located between the storage tanks and the output port 6.

[0064] The main body of the equipment refers to a closed tank or pipeline structure used to contain liquid food, industrial fermentation, and pharmaceutical processing. Specifically, it can be a container or pipeline network formed by welding stainless steel. Its function is to provide the target surface to be cleaned for the cleaning system.

[0065] For example, the equipment body and the pipeline cleaning system form a closed loop through output pipeline 1 and return pipeline 2. The cleaning fluid, pumped from the storage tank through output pipeline 1 into the equipment body, returns to the storage tank through return pipeline 2 after cleaning. A micro / nano bubble generator 3 continuously generates high-density microbubbles in output pipeline 1. These bubbles cavitation and break down as they flow through the equipment body, generating localized high-pressure impacts to remove adhering substances. The parallel arrangement of multiple storage tanks allows for the simultaneous storage of cleaning media with different properties, such as water or chemical solvents. During operation, the cleaning formula can be quickly adjusted by switching valves. The symmetrical layout of return pipeline 2 and output pipeline 1 allows the system to select single-point or multi-point cleaning modes based on the equipment's structural characteristics, while avoiding cleaning dead zones.

[0066] Understandably, this invention achieves highly efficient physical cleaning of the internal pipes and tank surfaces of the equipment, reducing reliance on strong acid and alkali solvents. The recycling of the cleaning fluid reduces media consumption and avoids waste liquid discharge problems. The cavitation effect of micro-nano bubbles effectively removes stubborn stains, especially suitable for removing protein or oil residues in food processing equipment. The parallel storage tank structure allows the system to flexibly select between clean water rinsing, chemical cleaning, or hot water disinfection modes depending on the type of stain. Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A pipe cleaning system, characterized in that, include: Multiple liquid storage tanks, the liquid storage tanks being used to store cleaning fluid; An output pipeline is provided, which is connected to the outlet of a plurality of liquid storage tanks, and the plurality of liquid storage tanks are connected in parallel with the output pipeline. A return pipeline is provided, which is connected to the inlet of a plurality of liquid storage tanks, and the plurality of liquid storage tanks are connected in parallel with the return pipeline. A micro-nano bubble generator is provided in the output pipeline and located between the plurality of liquid storage tanks and the output port of the output pipeline.

2. The pipeline cleaning system according to claim 1, characterized in that, The pipeline cleaning system also includes a cleaning pump, which is located in the output pipeline and between the micro / nano bubble generator and the output port of the output pipeline.

3. The pipeline cleaning system according to claim 1, characterized in that, The output pipeline is equipped with a sampling port, which is located downstream of the micro / nano bubble generator in the direction of fluid flow within the output pipeline.

4. The pipeline cleaning system according to claim 1, characterized in that, The pipeline cleaning system includes at least two return pipelines, at least two output pipelines, and at least two micro / nano bubble generators. The at least two return pipelines are connected in parallel, and the at least two output pipelines are connected in parallel. Each micro / nano bubble generator is located in one of the output pipelines.

5. The pipeline cleaning system according to claim 1, characterized in that, The output port of the output pipeline includes multiple target outlets, which are connected in parallel.

6. The pipeline cleaning system according to any one of claims 1 to 5, characterized in that, The plurality of storage tanks include a clean water tank, a hot water tank, and a return tank, wherein the clean water tank, the hot water tank, and the return tank are arranged in parallel between the output pipeline and the return pipeline.

7. The pipeline cleaning system according to claim 6, characterized in that, The plurality of storage tanks also include at least one of an acid tank and an alkali tank, wherein the acid tank and / or the alkali tank are arranged in parallel with the clean water tank, the hot water tank and the return tank between the output pipeline and the return pipeline.

8. The pipeline cleaning system according to any one of claims 1 to 5, characterized in that, The pipeline cleaning system includes a water supply pipeline that connects to the outside environment and multiple liquid storage tanks.

9. The pipeline cleaning system according to any one of claims 1 to 5, characterized in that, The total pressure of the micro / nano bubble generator is between 0.6 MPa and 0.8 MPa; And / or, the gas-liquid mixing ratio of the micro / nano bubble generator is between 9% and 11%.

10. A production equipment applied in the liquid food, industrial fermentation, and pharmaceutical industries, characterized in that, The device includes a main body and a pipeline cleaning system as described in any one of claims 1 to 9, wherein the output pipeline and the return pipeline are respectively connected to the main body of the device.

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