Filtering and impurity separating device for beverage production

Abstract

The utility model provides a filtering and impurity separating device for beverage production, the device sequentially comprises a feeding buffer conveying mechanism, a self-cleaning pre-filtering mechanism and a fine filtering mechanism along the material flowing direction, the feeding buffer conveying mechanism comprises a buffer tank and a low-shear pump, and the low-shear pump is arranged at the bottom of the buffer tank; an inlet of the self-cleaning pre-filtering mechanism is connected with an outlet of the low-shear pump, the self-cleaning pre-filtering mechanism comprises a rough filtering tank, a first filtering medium arranged in the rough filtering tank and an online cleaning assembly used for online cleaning impurities intercepted on the surface of the first filtering medium, and the rough filtering tank is provided with a sewage outlet used for discharging the intercepted impurities and a clean liquid outlet used for discharging clean liquid; the fine filtering mechanism comprises at least two groups of parallel fine filter assemblies which can be switched for use, and inlets of the parallel fine filter assemblies are selectively communicated with an inlet of the fine filtering mechanism through switching valves. And the structural integrity and stability of the emulsified beverage can be protected while the filtering effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of beverage production technology, and in particular to a filtration and impurity separation device for beverage production. Background Technology

[0002] In the modern beverage industry, filtration and impurity separation are critical production steps to ensure product quality, safety, and stability. This is especially true for beverages in all bagged and bottled forms that involve partial or full emulsification processes. These beverages, such as dairy drinks, plant-based protein drinks (like soy milk and oat milk), fruit and vegetable juices (containing suspended solids), coffee drinks, and complex protein drinks, typically have complex systems containing dispersed fat globules, protein particles, stabilizers, and fine solids (such as meat fibers).

[0003] Before these emulsified beverages are packaged (whether in bags or bottles), it is essential to effectively remove all impurities that may be introduced or generated during the production process, such as undissolved raw material particles, agglomerates, charred residues produced during processing, particles (including metal shavings) from pipe or equipment wear, and any accidentally introduced foreign fibers or objects. These impurities not only affect the appearance and taste of the product but may also clog filling equipment and even pose food safety risks.

[0004] However, conventional methods and apparatus for beverage filtration in the prior art often face one or more of the following technical problems when processing beverages containing emulsified systems:

[0005] Traditional filtration processes, especially those using high differential pressure operation or pumps with high shear effects (such as centrifugal pumps) or certain types of filters, can generate mechanical shear forces that can damage the structure of emulsion droplets, leading to quality defects such as fat floating, protein precipitation, oil-water separation, or a rough texture, which seriously affect the quality and shelf-life stability of the final product.

[0006] Therefore, existing beverage filtration technologies need to be improved to overcome their shortcomings. Utility Model Content

[0007] To overcome the problems existing in related technologies, the purpose of this utility model is to provide a filtration and impurity separation device for beverage production. This filtration and impurity separation device for beverage production uses a low-shear pump for conveying and combines a self-cleaning pre-filtration mechanism and a parallel switchable fine filtration mechanism to form a multi-stage filtration system. It can ensure the filtration effect and remove impurities while maximizing the protection of the structural integrity and stability of beverages containing emulsion systems. It effectively overcomes the problems of damaging the emulsion structure and affecting product quality in the prior art, and improves the quality and shelf life of the final product.

[0008] A filtration and impurity separation device for beverage production, used for processing emulsified beverages, the device comprising, in sequence along the material flow direction:

[0009] A feeding buffer conveying mechanism is used to stabilize the incoming flow rate and pressure of the emulsified beverage. It includes a buffer tank and a low-shear pump. The buffer tank is used to receive the emulsified beverage and provide a stable liquid level. The low-shear pump is located at the bottom of the buffer tank and is used to extract the emulsified beverage in the buffer tank with low shear force.

[0010] The self-cleaning pre-filtration mechanism, whose inlet is connected to the outlet of the low-shear pump, is used to remove impurity particles from the emulsified beverage. It includes a coarse filter tank, a first filter medium disposed in the coarse filter tank, and an online cleaning component for cleaning the surface of the first filter medium to trap impurities. The coarse filter tank is provided with a drain outlet for discharging the trapped impurities and a clean liquid outlet for discharging clean liquid.

[0011] The fine filtration mechanism, whose inlet is connected to the outlet of the clean liquid, is used to remove fine particles from the emulsified beverage. It includes at least two sets of switchable parallel fine filter assemblies. Each set of parallel fine filter assemblies is provided with a second filter medium for removing fine particles. The inlets of the parallel fine filter assemblies are selectively connected to the inlet of the fine filtration mechanism through a switching valve. The outlets of the parallel fine filter assemblies converge to the outlet of the fine filtration mechanism.

[0012] Furthermore, the first filter medium is a coarse filter disc, which is horizontally disposed inside the coarse filter tank;

[0013] The inlet of the self-cleaning pre-filtration mechanism is located above the coarse filter disc;

[0014] The online cleaning component includes a rotary scraper and a scraper driver. The rotary scraper is positioned above the coarse filter disc and acts on the upper surface of the coarse filter disc. The scraper driver is connected to the rotary scraper driver.

[0015] By setting the first filter medium as a horizontal coarse filter plate and using an overhead rotating scraper for cleaning, impurities are directly scraped off from the filtration surface. Gravity assists in the sedimentation or removal of impurities, resulting in a simple structure and direct cleaning effect. The inlet's location above the coarse filter plate ensures a proper downward flow of fluid through the filter plate. This specific structural layout helps improve the impurity removal efficiency and operational stability of the self-cleaning pre-filtration mechanism.

[0016] Furthermore, the drain outlet is located on the side of the coarse filter tank, and the drain outlet is arranged tangentially along the tank wall of the coarse filter tank. A temporary storage tube is provided at the drain outlet, one end of which is connected to the drain outlet, and the other end is connected to a drain valve. The temporary storage tube is used to temporarily contain the intercepted impurities.

[0017] By designing the drain outlet tangentially along the tank wall, and in conjunction with a temporary storage pipe and drain valve, the tangential thrust generated by the rotating scraper can be used more effectively to concentrate and remove impurities. The design of the temporary storage pipe allows for a certain amount of impurities to accumulate before discharge, thus enabling pulsed, quantitative discharge. Compared to continuous discharge or simple bottom discharge, this significantly reduces the amount of valuable emulsified beverage carried away with each discharge, improving material utilization and reducing operating costs.

[0018] Furthermore, the rotary scraper includes a central shaft arranged in a vertical direction and a scraper arm extending radially along the central shaft. The scraper arm is provided with a scraper blade, which has an inclined angle or is spiral-shaped. The scraper blade is used to scrape up the trapped impurities on the upper surface of the coarse filter disc and generate a lateral thrust, and to push the trapped impurities toward the drain port along the rotation direction of the scraper arm.

[0019] By employing a rotating scraper with an inclined or spiral shape, compared to a straight scraper, it not only scrapes up impurities from the filter disc surface but also generates effective lateral thrust. This actively "pushes" the trapped impurities along the rotation direction of the scraper arm to the drain port, greatly enhancing the impurity removal efficiency and the conveying capacity to the drain port, ensuring the thoroughness of the self-cleaning function and preventing excessive accumulation of impurities on the filter disc surface.

[0020] Furthermore, the device also includes a magnetic filtration mechanism connected to the outlet of the fine filtration mechanism, the magnetic filtration mechanism including a magnetic filter pipe and a removable magnetic rod assembly disposed within the magnetic filter pipe.

[0021] A magnetic filtration mechanism is added after the fine filtration mechanism to specifically remove ferromagnetic metal particles that may have entered the product during production. This effectively prevents metal foreign objects from entering the final product, improving product safety. The removable magnetic rod assembly design makes it simple and convenient to inspect and clean the captured metal impurities, facilitating the monitoring of equipment wear and ensuring the effectiveness of magnetic filtration.

[0022] Furthermore, each of the parallel fine filter assemblies includes a fine filter tank, the second filter medium is a replaceable pleated filter element, the fine filter tank is provided with a filter element mounting seat for installing the replaceable pleated filter element, the filter element mounting seat is located at the bottom outlet of the fine filter tank, and the replaceable pleated filter element is sealed and installed through the filter element mounting seat.

[0023] The fine filtration system uses a filter tank with a replaceable pleated filter cartridge. The large filtration area of ​​the pleated cartridge allows beverages to pass through the filter medium at lower flow rates and pressure differentials, significantly reducing the shear force on the emulsion system during filtration and better protecting the product structure and taste. Meanwhile, the filter cartridge mounting base located at the bottom outlet ensures a reliable seal, preventing side leakage. Combined with the replaceable design, it balances filtration effectiveness, product protection, and ease of maintenance.

[0024] Furthermore, the fine filter tank includes a vertical cylindrical tank body and a removable tank cover on top of the tank body, and a sealing element is provided between the tank body and the tank cover;

[0025] The fine filter tank also includes a quick-opening mechanism for repeatedly fastening or loosening the tank cover to the tank body to replace the replaceable pleated filter element.

[0026] By equipping the fine filter tank with a quick-opening mechanism, the operation of opening and closing the tank cover for filter element replacement becomes fast and convenient, significantly reducing downtime for maintenance during filter element replacement. This significantly improves the overall operating efficiency of the production line and reduces the impact of production interruptions on output and schedules.

[0027] Furthermore, the quick-opening mechanism is a rocker arm type quick-opening mechanism, which includes at least two rocker arms distributed along the circumference of the tank body and hinged at one end to the outer wall of the tank body, and a clamping bolt threaded to or pivotally connected to the other end of the rocker arm. The clamping bolt is used to apply pressure to the outer edge of the tank cover and press it tightly against the sealing surface of the tank body.

[0028] The rocker arm type quick-opening mechanism provides a mature, simple, and fast-opening method that generates sufficient locking force to ensure reliable sealing under high pressure. Compared to other potentially more complex or costly quick-opening designs, the rocker arm type mechanism achieves a good balance between cost, reliability, and ease of operation, ensuring the practicality and durability of the quick-opening function in industrial environments.

[0029] Furthermore, the top of the fine filter tank is provided with an exhaust port and the bottom is provided with a drain port, and both the exhaust port and the drain port are provided with valves.

[0030] The fine filter tank is equipped with a top vent and a bottom drain with valves. The vent effectively removes internal air when the system is started and filled with liquid, ensuring that the filter element is fully wetted and avoiding air resistance that affects filtration. The drain facilitates the emptying of residual liquid in the tank before replacing the filter element, or the thorough removal of cleaning liquid and residue during cleaning, thus improving operational safety, filtration efficiency, and cleaning effect.

[0031] Furthermore, the device also includes a control system and a plurality of sensors electrically connected to the control system;

[0032] The plurality of sensors include:

[0033] A first pressure sensor group is installed at the inlet and the outlet of the clean liquid of the self-cleaning pre-filtration mechanism to monitor the pressure difference of the first filter medium;

[0034] A second pressure sensor group is installed at the inlet and outlet of the fine filtration mechanism to monitor the pressure difference of the second filter medium;

[0035] A liquid level sensor installed inside the buffer tank is used to monitor the liquid level inside the buffer tank.

[0036] By integrating a control system and pressure and level sensors at key locations, the filtration and separation process is automated. Monitoring the pressure difference between pre-filtration and fine filtration allows for accurate assessment of the filter media's contamination level. Monitoring the buffer tank level effectively controls the start-up, shutdown, and speed of the low-shear pump, ensuring stable feed and preventing pump damage from dry running. This improves the intelligence and stability of the unit's operation, reduces the need for human intervention, and helps optimize consumable usage and ensure process parameters are maintained.

[0037] The beneficial effects of this utility model are as follows:

[0038] This utility model provides a filtration and impurity separation device for beverage production. This device constructs a multi-stage, gentle, and continuous filtration system by specifically combining a low-shear pump, a self-cleaning pre-filtration mechanism, and a parallel fine filtration mechanism. The low-shear pump reduces damage to the emulsified beverage structure at the source; the self-cleaning pre-filtration mechanism removes large particulate impurities online, ensuring stable system operation; the parallel fine filtration mechanism not only removes fine particles, but its switching function also ensures production continuity. The synergistic effect of the overall structure effectively solves the problem of easily damaging the product structure and affecting quality when filtering emulsified beverages in existing technologies, achieving a balance between high-efficiency filtration and product protection. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the filtration and impurity separation device for beverage production provided in this application;

[0040] Figure 2 This is a cross-sectional view of the coarse filter tank of the self-cleaning pre-filtration mechanism provided in this application;

[0041] Figure 3 This is a cross-sectional view of the fine filter tank of the parallel fine filter assembly provided in this application.

[0042] Figure label:

[0043] 100. Feed buffer conveyor mechanism; 110. Buffer tank; 120. Low shear pump;

[0044] 200. Self-cleaning pre-filtration mechanism; 210. Coarse filter tank; 220. Coarse filter disc; 230. In-line cleaning assembly; 231. Rotary scraper; 232. Scraper driver; 240. Drain outlet; 250. Temporary storage tube; 260. Drain valve;

[0045] 300. Fine filtration mechanism; 310. Parallel fine filter assembly; 311. Replaceable pleated filter element; 312. Fine filter tank; 313. Filter element mounting base; 320. Switching valve;

[0046] 400. Magnetic filtration mechanism. Detailed Implementation

[0047] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0048] Example

[0049] like Figures 1 to 3 As shown, this embodiment provides a filtration and impurity separation device for beverage production, particularly for processing beverages containing partial or complete emulsification processes, such as milk-containing beverages and plant protein beverages, to effectively remove impurities while protecting the stability of their emulsification system.

[0050] like Figure 1 As shown, the device mainly comprises a feeding buffer conveying mechanism 100, a self-cleaning pre-filtration mechanism 200, and a fine filtration mechanism 300 connected in sequence along the flow direction of the material (emulsified beverage). If needed, a magnetic filtration mechanism 400 can also be connected in series after the fine filtration mechanism 300. Furthermore, the device can be equipped with a control system and related sensors.

[0051] The feed buffer conveying mechanism 100 is located at the front end of the device and is used to receive the emulsified beverage from the previous process and stabilize its flow rate and pressure as it enters the subsequent filtration unit. This mechanism includes a vertical buffer tank 110 with a feed inlet at the top, and the tank body is made of sanitary stainless steel. The buffer tank 110 provides a certain material buffering capacity and monitors the liquid level in real time via an internally installed level sensor. A low-shear pump 120 is connected to the bottom outlet of the buffer tank 110. The low-shear pump 120 is preferably a screw pump or rotary cam pump, which are known to have low-shear characteristics. Its function is to gently draw the emulsified beverage from the buffer tank 110 and convey it to the next stage of filtration with minimal mechanical force, thereby effectively protecting the sensitive emulsion droplet structure in the beverage.

[0052] The inlet of the self-cleaning pre-filtration unit 200 is connected to the outlet of the low-shear pump 120. This unit is used to remove larger impurity particles from beverages, such as undissolved raw material clumps and fibers, to reduce the burden on subsequent fine filtration.

[0053] like Figure 2 As shown, the core of the self-cleaning pre-filtration mechanism 200 is a coarse filter tank 210. Inside the coarse filter tank 210, a first filter medium is horizontally arranged, specifically a coarse filter disc 220 in this embodiment. The inlet of the self-cleaning pre-filtration mechanism 200 is located above the coarse filter disc 220, allowing the beverage to flow from top to bottom through the coarse filter disc 220. Impurities larger than the pore size of the coarse filter disc are trapped on its upper surface.

[0054] To achieve in-line cleaning, the coarse filter tank 210 is equipped with an in-line cleaning assembly 230. This assembly includes a rotatable rotary scraper 231 positioned above the coarse filter disc 220 and a scraper driver 232 that drives its rotation. The scraper driver 232 includes a motor and a reducer. The rotary scraper 231 comprises a central shaft in the vertical direction, scraper arms extending radially from the central shaft, and scraper blades fixed on the scraper arms. The scraper blades have a certain inclination angle or a spiral shape, so that during rotation, they can not only scrape up the trapped impurities on the upper surface of the coarse filter disc 220, but also generate lateral thrust.

[0055] A drain port 240 is provided on the side wall of the coarse filter tank 210. This drain port 240 is preferably tangentially positioned along the tank wall to receive impurities pushed by the rotating scraper 231. A temporary storage tube 250 is connected to the drain port 240, and its end is equipped with a drain valve 260 that can be controlled by the control system. The rotating scraper 231 scrapes up the impurities and pushes them towards the drain port 240. The impurities temporarily accumulate in the temporary storage tube 250, and are then discharged by opening the drain valve 260 at regular intervals or as needed, achieving automatic, online discharge with minimal material loss.

[0056] The clean liquid filtered by the coarse filter plate 220 flows out from the clean liquid outlet of the coarse filter tank 210. A first pressure sensor group is installed on the inlet pipe and the clean liquid outlet pipe of the self-cleaning pre-filtration mechanism 200, respectively, to monitor the pressure difference on both sides of the coarse filter plate 220. This pressure difference signal can be used as a basis for activating the online cleaning component 230 or judging the filtration status.

[0057] The inlet of the fine filtration unit 300 is connected to the clean liquid outlet of the self-cleaning pre-filtration unit 200, used to further remove finer suspended particles from the beverage, ensuring the clarity and purity of the final product. Figure 1 As shown, the mechanism includes at least two (e.g., two or more) parallel fine filter assemblies 310 that can operate in parallel and be switched between each other. The inlet of each parallel fine filter assembly 310 is selectively connected to the total inlet of the fine filtration mechanism 300 via a switching valve 320, and their outlets converge to the total outlet of the fine filtration mechanism 300. This parallel switching design allows for filter element replacement, cleaning, or maintenance of one set of filters while the other is operating, thus ensuring production continuity.

[0058] like Figure 3 As shown, the core of each set of parallel fine filter assemblies 310 is a fine filter tank 312.

[0059] The fine filter tank 312 is a vertical cylindrical tank with a removable lid on top. The tank body and the lid are sealed together by a sealing element.

[0060] To facilitate quick and safe opening of the tank lid for replacement of the internal filter media, the fine filter tank 312 is equipped with a quick-opening mechanism. In this embodiment, the quick-opening mechanism is preferably a rocker arm type quick-opening mechanism, comprising multiple (e.g., two or more) rocker arms evenly distributed along the circumference of the tank body. One end of each rocker arm is hinged to the outer wall of the tank body, and the other end is pressed tightly against the outer edge of the tank lid by a clamping bolt, thus pressing it tightly against the sealing surface of the tank body.

[0061] The fine filter tank 312 contains a second filter medium, specifically a replaceable pleated filter element 311 in this embodiment. The replaceable pleated filter element 311 has a large effective filtration area, allowing beverages to pass through at lower flow rates and pressure differentials, thereby further reducing shear forces during the filtration process.

[0062] The replaceable pleated filter element 311 is precisely and reliably sealed and installed via the filter element mounting base 313 located at the bottom outlet of the fine filter tank 312, preventing liquid side leakage.

[0063] The top of the fine filter tank 312 may also be equipped with a vent port with a valve for venting or emptying the system during startup; the bottom may also be equipped with a drain port with a valve for draining residual liquid or taking samples. A second pressure sensor group is installed at the main inlet (before the switching valve 320) and main outlet of the fine filter mechanism 300, respectively, to monitor the differential pressure of the working fine filter element 311. When the differential pressure reaches a set value, it indicates that it is necessary to switch to the standby filter group and replace the filter element of the current group.

[0064] A magnetic filter unit 400 can be installed in series after the outlet of the fine filtration unit 300. The magnetic filter unit 400 includes a specially designed magnetic filter pipe and a removable magnetic rod assembly built into it. Beverages flowing through this area are subjected to a strong magnetic field, and any accidentally introduced ferromagnetic particles (such as metal shavings from equipment wear) are adsorbed onto the surface of the magnetic rods, thus improving the safety of the final product. The magnetic rod assembly is designed to be easily removed for regular inspection and cleaning.

[0065] The entire device can be centrally controlled and monitored by a control system (such as a PLC). This system receives signals from the level sensor, the first pressure sensor group, and the second pressure sensor group, and controls the start-up, shutdown, and speed of the low-shear pump 120, the operating cycle of the online cleaning component 230, the opening and closing of the drain valve 260, and the switching action of the switching valve 320 according to preset logic, thereby achieving automated operation, status monitoring, and fault early warning.

[0066] The working process of the device in this embodiment is as follows:

[0067] The emulsified beverage to be processed first enters the buffer tank 110, where the liquid level is stabilized by a level sensor. A low-shear pump 120 pumps the beverage into the self-cleaning pre-filtration unit 200 in a set low-shear mode. Large particles are removed by the coarse filter disc 220, while the online cleaning component 230 automatically cleans the filter disc and discharges impurities based on pressure difference or time. The pre-filtered beverage flows into the fine filtration unit 300, and through the switching valve 320, enters the currently operating parallel fine filter assembly. Fine filtration is completed in the parallel fine filter assembly by a large-area pleated filter element 311. The filtered clean beverage then flows out of the device outlet after passing through the magnetic filtration unit 400, proceeding to subsequent filling or other processes. When the sensor detects a need for maintenance (such as excessive pressure difference), the control system automatically switches to the standby filter assembly and issues a prompt to replace the filter element or perform maintenance.

[0068] The beverage production filtration and impurity separation device provided in this embodiment adopts a feeding buffer conveying mechanism 100 composed of a low-shear pump 120 and a buffer tank 110, which greatly reduces the mechanical shear force on the sensitive emulsified beverage system from the source, effectively protecting the original taste and structural stability of the product.

[0069] The self-cleaning pre-filtration unit 200 with a specific structure can remove large particulate impurities online and efficiently, reducing manual intervention and production interruptions, while optimizing the sewage discharge process and reducing material loss.

[0070] The fine filtration mechanism 300, which adopts the parallel fine filter assembly 310, can not only achieve continuous and uninterrupted fine filtration, but also further reduce the flow rate and pressure difference during the filtration process, further protect the emulsion system, and at the same time, the filter element replacement is extremely convenient, improving maintenance efficiency.

[0071] By combining sensors (such as pressure and liquid level sensors) and a control system, automated monitoring and intelligent management of the device's operation are achieved, ensuring the stability, reliability, and efficiency of the filtration process. This solves the problem of existing technologies easily damaging the product structure when processing emulsified beverages, achieving efficient impurity removal and product quality protection.

[0072] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application. Any specific values ​​in all examples shown and discussed herein should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0073] Furthermore, it should be noted that the use of terms such as "first" and "second" is merely for ease of distinction, and unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0074] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A filtration and impurity separation device for beverage production, characterized in that, For processing emulsified beverages, the apparatus comprises, in sequence along the material flow direction: A feeding buffer conveying mechanism (100) is used to stabilize the incoming flow rate and pressure of the emulsified beverage. It includes a buffer tank (110) and a low-shear pump (120). The buffer tank (110) is used to receive the emulsified beverage and provide a stable liquid level. The low-shear pump (120) is located at the bottom of the buffer tank (110) and is used to extract the emulsified beverage in the buffer tank (110) with low shear force. A self-cleaning pre-filtration mechanism (200) is provided, the inlet of which is connected to the outlet of the low-shear pump (120), for removing impurity particles from the emulsified beverage. The mechanism includes a coarse filter tank (210), a first filter medium disposed in the coarse filter tank (210), and an online cleaning component (230) for cleaning the surface of the first filter medium and removing impurities. The coarse filter tank (210) is provided with a drain outlet (240) for discharging the impurities and a clean liquid outlet for discharging the clean liquid. A fine filtration mechanism (300) is provided, the inlet of which is connected to the outlet of the clean liquid, for removing fine particles from the emulsified beverage. It includes at least two sets of switchable parallel fine filter assemblies (310), each set of parallel fine filter assemblies (310) is provided with a second filter medium, the inlets of the parallel fine filter assemblies (310) are selectively connected to the inlet of the fine filtration mechanism (300) through a switching valve (320), and the outlets of the parallel fine filter assemblies (310) converge to the outlet of the fine filtration mechanism (300).

2. The filtration and impurity separation device for beverage production according to claim 1, characterized in that: The first filter medium is a coarse filter disc (220), which is horizontally disposed inside the coarse filter tank (210); The inlet of the self-cleaning pre-filtration mechanism (200) is located above the coarse filter disc (220); The online cleaning component (230) includes a rotary scraper (231) and a scraper driver (232). The rotary scraper (231) is located above the coarse filter disc (220) and acts on the upper surface of the coarse filter disc (220). The scraper driver (232) is drivenly connected to the rotary scraper (231).

3. The filtration and impurity separation device for beverage production according to claim 2, characterized in that: The drain outlet (240) is located on the side of the coarse filter tank (210). The drain outlet (240) is arranged tangentially along the tank wall of the coarse filter tank (210). A temporary storage tube (250) is provided at the drain outlet (240). One end of the temporary storage tube (250) is connected to the drain outlet (240), and the other end is connected to a drain valve (260). The temporary storage tube (250) is used to temporarily contain the intercepted impurities.

4. The filtration and impurity separation device for beverage production according to claim 2, characterized in that: The rotary scraper (231) includes a central shaft arranged in a vertical direction and a scraper arm extending radially along the central shaft. The scraper arm is provided with a scraper blade, which has an inclined angle or is spiral in shape. The scraper blade is used to scrape up the trapped impurities on the upper surface of the coarse filter disc (220) and generate a lateral thrust, and to push the trapped impurities toward the drain port (240) along the rotation direction of the scraper arm.

5. The filtration and impurity separation device for beverage production according to claim 1, characterized in that: The device further includes a magnetic filtration mechanism (400) connected to the outlet of the fine filtration mechanism (300), and the magnetic filtration mechanism (400) includes a magnetic filter pipe and a removable magnetic rod assembly disposed within the magnetic filter pipe.

6. The filtration and impurity separation device for beverage production according to claim 1, characterized in that: Each of the parallel fine filter assemblies (310) includes a fine filter tank (312), the second filter medium is a replaceable pleated filter element (311), the fine filter tank (312) is provided with a filter element mounting seat (313) for installing the replaceable pleated filter element (311), the filter element mounting seat (313) is located at the bottom outlet of the fine filter tank (312), and the replaceable pleated filter element (311) is sealed and installed through the filter element mounting seat (313).

7. The filtration and impurity separation device for beverage production according to claim 6, characterized in that: The fine filter tank (312) includes a vertical cylindrical tank body and a removable tank cover on the top of the tank body, and a sealing element is provided between the tank body and the tank cover; The fine filter tank (312) also includes a quick-opening mechanism for repeatedly fastening or loosening the tank cover to the tank body to replace the replaceable pleated filter element (311).

8. The filtration and impurity separation device for beverage production according to claim 7, characterized in that: The quick-opening mechanism is a rocker arm type quick-opening mechanism, which includes at least two rocker arms distributed along the circumference of the tank body and hinged at one end to the outer wall of the tank body, and a clamping bolt threaded to or pivotally connected to the other end of the rocker arm. The clamping bolt is used to apply pressure to the outer edge of the tank cover and press it tightly against the sealing surface of the tank body.

9. The filtration and impurity separation device for beverage production according to claim 6, characterized in that: The fine filter tank (312) is provided with an exhaust port at the top and a drain port at the bottom, and both the exhaust port and the drain port are equipped with valves.

10. The filtration and impurity separation device for beverage production according to claim 1, characterized in that: The device also includes a control system and a plurality of sensors electrically connected to the control system; The plurality of sensors include: A first pressure sensor group is installed at the inlet and the clean liquid outlet of the self-cleaning pre-filtration mechanism (200) to monitor the pressure difference of the first filter medium; A second pressure sensor group is provided at the inlet and outlet of the fine filtration mechanism (300) to monitor the pressure difference of the second filter medium; A liquid level sensor is installed in the buffer tank (110) to monitor the liquid level in the buffer tank (110).

Images