Filtering equipment and technology for apple beverage production

Abstract

The invention belongs to the technical field of fruit processing, and relates to filtering equipment and technology for apple beverage production. Comprising a shell, a supporting cylinder is placed in the shell, filter cloth is arranged on the inner side of the supporting cylinder, a main filter cylinder is placed in the supporting cylinder, an auxiliary filter cylinder is fixedly connected into the main filter cylinder, a guide cone top is fixedly connected to the upper side of the auxiliary filter cylinder, a power push rod is installed on the shell, and the telescopic end of the power push rod penetrates through the shell and is fixedly connected with a guide ring. The flow direction of fruit juice is jointly guided through the guide cone top and the guide ring, the fruit juice can alternately wash the surfaces of the main filter cylinder and the auxiliary filter cylinder in the axial direction after entering the shell, and under the condition that pulp particles are not extruded, the particles are promoted to be separated from the peripheral sides of the main filter cylinder and the auxiliary filter cylinder and move between the main filter cylinder and the auxiliary filter cylinder in a reciprocating mode; the particles slowly sink under the action of self weight, so that the stability of the filtering efficiency can be kept, the probability that the pulp particles are extruded and crushed can be reduced, and the influence on subsequent fine filtering operation is reduced.

Description

Technical Field

[0001] This invention relates to the field of fruit processing technology, and in particular to a filtration device and process for producing apple beverages. Background Technology

[0002] Filtration equipment is the core device in apple juice production, responsible for clarifying and purifying the juice. By effectively removing pulp, it significantly improves product transparency, stability, and shelf life, playing a crucial role in optimizing juice quality and consumer experience. Currently, the commonly used combination of coarse and fine filtration removes large and small pulp particles sequentially. However, during coarse filtration, large pulp particles tend to accumulate on the filter surface, affecting filtration efficiency. Current solutions to this problem mainly include intermittent backwashing and continuous scraper cleaning, but both have significant limitations: intermittent shutdowns not only reduce production efficiency but also exacerbate equipment wear and energy consumption due to frequent start-ups and shutdowns; while the mechanical squeezing action of scraper cleaning deforms small, soft pulp particles, causing them to pass through the coarse filter and enter the subsequent fine filtration stage. This not only increases the load on the fine filtration stage but also accelerates filter media blockage, ultimately negatively impacting juice turbidity and taste stability. Summary of the Invention

[0003] This invention provides a filtration device and process for apple beverage production, which overcomes the shortcomings of the current coarse filtration process, which, regardless of whether intermittent shutdown backwashing or continuous scraper cleaning is used, will lead to a decrease in production efficiency or an increased burden on subsequent fine filtration, thus affecting the final quality of the juice.

[0004] The technical implementation scheme of the present invention is as follows: a filtration device for apple beverage production, comprising: a housing, wherein an inlet and a outlet are respectively provided on the upper and lower sides of the housing; a support cylinder is placed inside the housing; a filter cloth is provided on the inner side of the support cylinder; the support cylinder is used to maintain the shape stability of the filter cloth; a main filter cylinder is placed inside the support cylinder; the main filter cylinder and the support cylinder together clamp the two ends of the filter cloth; a secondary filter cylinder is fixedly connected inside the main filter cylinder; the secondary filter cylinder is provided with multiple connecting channels; the connecting channels connect the inner side of the secondary filter cylinder to the outer side of the main filter cylinder; a guide cone is fixedly connected to the upper side of the secondary filter cylinder; a power push rod is installed on the housing; the telescopic end of the power push rod passes through the housing and is fixedly connected to a guide ring; the guide ring and the guide cone are used together to change the flow direction of the juice; a fixing spring is fixedly connected to the housing; and a compression ring that contacts the main filter cylinder is fixedly connected to the fixing spring.

[0005] Furthermore, a guide cylinder is fixedly connected to the upper side of the guide cone apex. The guide cylinder is used to guide the juice to flow along the outer side wall of the guide cone apex and the secondary filter cylinder. The minimum diameter of the guide ring is greater than the inner diameter of the feed inlet. The guide cone apex, the guide ring, the guide cylinder, and the feed inlet are all coaxial. The maximum diameter of the guide cone apex is greater than the inner diameter of the feed inlet.

[0006] Furthermore, an inner shielding cylinder is slidably connected to the inner limit of the secondary filter cartridge. The inner shielding cylinder is used to shield the filter holes on the surface of the secondary filter cartridge. A first spring is fixedly connected between the lower side of the inner shielding cylinder and the secondary filter cartridge. An outer shielding cylinder is slidably connected to the outer side of the main filter cartridge. The outer shielding cylinder is used to shield the filter holes on the surface of the main filter cartridge. A second spring is fixedly connected between the lower side of the outer shielding cylinder and the main filter cartridge. Both the inner shielding cylinder and the outer shielding cylinder are in contact with the guide ring through connecting rods.

[0007] Furthermore, the length of the inner shielding cylinder is less than the length of the secondary filter cylinder, and the length of the outer shielding cylinder is less than the length of the main filter cylinder, so that the juice can always pass through the lower filter holes of the main filter cylinder and the secondary filter cylinder.

[0008] Furthermore, a take-up device is fixedly connected inside the housing, and a pull rope is wound inside the take-up device. A counterweight ring is fixedly connected to the lower end of the pull rope, and an elastic scraper is fixedly connected to the counterweight ring, which contacts the inner side of the filter cloth. The elastic scraper is used to scrape off the fruit residue adhering to the inner side of the filter cloth.

[0009] Furthermore, a sealing ring is slidably connected to the lower part of the support cylinder and an electromagnet is installed thereon. The electromagnet is used to control the up and down position of the sealing ring. An inner connecting hole and an outer connecting hole are provided on the support cylinder near the sealing ring. The projection of the inner connecting hole on the horizontal plane is located within the projection of the main filter cylinder on the horizontal plane. The projection of the outer connecting hole on the horizontal plane is located within the projection of the filter cloth on the horizontal plane and outside the projection of the main filter cylinder on the horizontal plane. The sealing ring is used to block the inner connecting hole and the outer connecting hole. A slag discharge port is provided on the lower side inside the shell.

[0010] Furthermore, the support cylinder is fixedly connected to a tripod, and the tripod is fixedly connected to a flexible shield. The flexible shield is located below the secondary filter cylinder, and the maximum diameter of the flexible shield is greater than the diameter of the secondary filter cylinder.

[0011] Furthermore, a float is fixed to the middle of the flexible shielding member, and the float is used to change the shape of the flexible shielding member.

[0012] Furthermore, a liquid level sensor and an electric pressure regulating valve are installed on the upper side of the housing.

[0013] A production process for an apple beverage, utilizing the aforementioned filtration equipment for apple beverage production, includes the following specific steps: S1: After the apples are washed, chopped and pressed, they become apple juice. The juice is transported through the inlet to the main filter and secondary filter in the shell for coarse filtration. Then the juice flows through the main filter and secondary filter to the main filter and filter cloth for fine filtration. Finally, the juice passes through the filter cloth and is discharged through the drain outlet. S2: Intermittent start-up power push rod, the power push rod drives the guide ring to move up and down reciprocally, so that the juice is guided by the top of the guide cone and the guide ring to successively flush the inner circumference of the main filter cartridge and the outer circumference of the secondary filter cartridge, causing the particles adsorbed on the inner circumference of the main filter cartridge and the outer circumference of the secondary filter cartridge to fall off. At the same time, the movement of the guide ring drives the inner and outer baffles to move synchronously, changing the flow direction of the juice between the main filter cartridge and the secondary filter cartridge, so that the particles follow the juice to flow back and forth between the main filter cartridge and the secondary filter cartridge, and with the influence of the particles' own weight, the particles gradually sink. S3: As the filtration time increases, the liquid level of the juice inside the filter cloth gradually rises. The liquid level sensor continuously monitors the liquid level of the juice, and the electric pressure regulating valve maintains the pressure inside the filter cloth. When the liquid level of the juice reaches the threshold, the take-up device starts and controls the elastic scraper to move up, so that the particles adsorbed on the inner periphery of the filter cloth detach and enter a suspended state. Under the action of their own weight, the particles gradually sink to the bottom of the filter cloth. S4: Periodically turn on the electromagnet to release the sealing ring from blocking the inner and outer connecting holes, allowing the particles deposited at the bottom to be discharged through the slag outlet along with the juice. Then control the sealing ring to re-block the inner and outer connecting holes. S5: When the elastic scraper cleans the inside of the filter cloth and the inner and outer connecting holes are opened, the liquid level inside the filter cloth drops rapidly. At this time, the pressure inside the filter cloth is reduced by the electric pressure regulating valve, so that the liquid level inside the filter cloth can be restored quickly. After the liquid level is restored, the electric pressure regulating valve is controlled to gradually increase the pressure inside the filter cloth to maintain the stability of the liquid level inside the filter cloth and prevent the pectin residue inside the filter cloth from coagulating and causing the filter cloth to become blocked.

[0014] The present invention discloses the following technical effects: The present invention guides the flow of juice by means of the guide cone apex and the guide ring, so that after the juice enters the shell, it can alternately scour the surface of the main filter cartridge and the auxiliary filter cartridge along the axial direction. Without squeezing the pulp particles, the particles are caused to detach from the periphery of the main filter cartridge and the auxiliary filter cartridge and move back and forth between the main filter cartridge and the auxiliary filter cartridge. The particles slowly sink under their own weight. This not only maintains the stability of filtration efficiency, but also reduces the probability of pulp particles being squeezed and broken, and reduces the impact on subsequent fine filtration operations.

[0015] By relying on the inner and outer shielding cylinders to block the filter holes on the main and secondary filter cylinders, the flow of juice between the main and secondary filter cylinders is further guided. When rinsing the main filter cylinder, the filter holes of the main filter cylinder are actively blocked, and when rinsing the secondary filter cylinder, the filter holes of the secondary filter cylinder are actively blocked, preventing particles from passing through the main and secondary filter cylinders.

[0016] The flexible baffle blocks the juice flowing downwards along the outer periphery of the secondary filter cartridge, reducing the probability of juice impacting and accumulating particles at the bottom of the main filter cartridge. In addition, after the juice level submerges the flexible baffle, the buoyancy of the float changes the shape of the flexible baffle, changing it from a concave shape to an convex shape. In this state, the juice stored between the main filter cartridge and the secondary filter cartridge, together with the flexible baffle, counteracts the impact force of the juice flowing downwards along the secondary filter cartridge. At the same time, it facilitates the guidance of particles to deposit on the periphery below the flexible baffle, making the state of the deposited particles more stable. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the housing of the present invention; Figure 3 This is a three-dimensional structural cross-sectional view of the support cylinder and filter cloth of the present invention; Figure 4 This is a three-dimensional structural cross-sectional view of the support cylinder and main filter cylinder of the present invention; Figure 5 This is a three-dimensional sectional view of the main filter cartridge and the auxiliary filter cartridge of the present invention; Figure 6 This is a three-dimensional structural cross-sectional view of the main filter cartridge and guide ring of the present invention; Figure 7 This is an exploded view of the support cylinder, main filter cylinder, and auxiliary filter cylinder of the present invention; Figure 8 This is a three-dimensional structural diagram of the electromagnet and flexible shielding component of the present invention; Figure 9 Appendix to this invention Figure 8 Enlarged view of point A in the middle; Figure 10 This is a three-dimensional structural cross-sectional view of the flexible shielding component of the present invention.

[0018] The components in the attached diagram are labeled as follows: 1-Housing, 101-Inlet, 102-Drain, 103-Slag discharge, 2-Support cylinder, 3-Filter cloth, 4-Main filter cylinder, 5-Secondary filter cylinder, 501-Connecting flow channel, 6-Guide cone top, 7-Power push rod, 8-Guide ring, 9-Fixing spring, 10-Squeezing ring, 11-Guide cylinder, 12-Inner shielding cylinder, 13-First spring, 14-Outer shielding cylinder, 15-Second spring, 16-Cable take-up device, 17-Pull rope, 18-Counterweight ring, 19-Elastic scraper, 20-Sealing ring, 201-Inner connecting hole, 202-Outer connecting hole, 21-Electromagnet, 22-Tripod bracket, 23-Flexible shielding component, 24-Float ball, 25-Level sensor, 26-Electric pressure regulating valve. Detailed Implementation

[0019] In the description of this invention, it should be understood that the terms "connection" and "fixed" used in this invention 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 a welded connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] Example 1 This embodiment discloses a filtration device for apple beverage production, which solves the problem that in the current coarse filtration process, whether intermittent shutdown backwashing or continuous scraper cleaning is used, production efficiency will decrease or the burden on subsequent fine filtration will increase, thus affecting the final quality of the juice.

[0021] See Figures 1 to 6 , Figure 8 and Figure 9 A filtration device for apple beverage production includes: a housing 1, with an inlet 101 and a outlet 102 respectively located on the upper and lower sides of the housing 1; a support cylinder 2 placed inside the housing 1; a filter cloth 3 cylindrical in shape placed inside the support cylinder 2; the support cylinder 2 maintains the shape stability of the filter cloth 3; and through holes are provided on the periphery of the support cylinder 2 to prevent obstruction of the filter cloth 3 while maintaining its shape; a main filter cylinder 4 is placed inside the support cylinder 2 (see...). Figure 8The main filter cylinder 4 and the support cylinder 2 together clamp the two ends of the filter cloth 3. A secondary filter cylinder 5 is fixedly connected inside the main filter cylinder 4. The secondary filter cylinder 5 is provided with multiple connecting channels 501. The number of connecting channels 501 is determined according to the flow rate of the juice, which is intended to reduce the resistance to the flow of the juice. Here, there are three connecting channels 501 arranged in a ring. The connecting channels 501 connect the inner side of the secondary filter cylinder 5 to the outer side of the main filter cylinder 4. A guide cone 6 is fixedly connected to the upper side of the secondary filter cylinder 5. The guide cone 6 is used to guide the juice entering from the feed inlet 101 into the annular space between the secondary filter cylinder 5 and the main filter cylinder 4. A power push rod 7 is installed on the upper side of the housing 1. The telescopic end of the power push rod 7 passes through... The housing 1 is fixedly connected to a guide ring 8. The guide ring 8 and the guide cone 6 work together to change the flow direction of the juice. When the guide ring 8 is in contact with the guide cone 6, the guide ring 8 and the guide cone 6 work together to guide the juice to flow along the inner circumference of the main filter cylinder 4. When the guide ring 8 is not in contact with the guide cone 6, the guide cone 6 guides the juice to flow along the outer circumference of the auxiliary filter cylinder 5. The housing 1 is fixedly connected to a fixing spring 9. The fixing spring 9 is fixedly connected to a compression ring 10 that is in contact with the main filter cylinder 4. The support cylinder 2 is located inside the housing 1. The main filter cylinder 4 presses the support cylinder 2 from top to bottom. The compression ring 10 presses the main filter cylinder 4 to maintain the relative position stability of the main filter cylinder 4, the support cylinder 2 and the housing 1.

[0022] The above setup enables the flow of juice to be guided by the guide cone 6 and the guide ring 8, allowing the juice to alternately axially wash the surfaces of the main filter cartridge 4 and the secondary filter cartridge 5 after entering the housing 1. Without compressing the pulp particles, the particles are detached from the periphery of the main filter cartridge 4 and the secondary filter cartridge 5 and move back and forth between the main filter cartridge 4 and the secondary filter cartridge 5, causing the particles to slowly sink under their own weight. This not only maintains the stability of the filtration efficiency but also reduces the probability of the pulp particles being crushed, thus reducing the impact on subsequent fine filtration operations.

[0023] See Figures 5 to 7 A guide cylinder 11 is fixed to the upper side of the guide cone 6. The guide cylinder 11 is used to guide the juice to flow along the outer side wall of the guide cone 6 and the secondary filter cylinder 5. The minimum diameter of the guide ring 8 is greater than the inner diameter of the feed inlet 101. The guide cone 6, guide ring 8, guide cylinder 11 and feed inlet 101 are all coaxial. The maximum diameter of the guide cone 6 is greater than the inner diameter of the feed inlet 101, so that the juice flowing out of the feed inlet 101 can flow completely along the outer side wall of the secondary filter cylinder 5.

[0024] Juice filtration process: Juice flows into housing 1 from inlet 101. Taking the state shown in the attached figure as the initial state, the juice first contacts the top of the guide cone 6 and flows downward along its periphery under the guidance of the top of the guide cone 6. After passing through the gap between the top of the guide cone 6 and the guide ring 8, the juice enters the space between the top of the guide cone 6 and the guide cylinder 11 and flows downward along the outer periphery of the auxiliary filter cylinder 5 under the guidance of the guide cylinder 11. The power push rod 7 is opened intermittently. The telescopic end of the power push rod 7 drives the guide ring 8 to move down, so that the guide ring 8 contacts the top of the guide cone 6. In this way, as the juice moves downward along the periphery of the guide cone 6, it is intercepted by the guide ring 8 and flows along the periphery of the guide ring 8. The guide ring 8 guides the juice to contact the inner periphery of the main filter cylinder 4 and flow downward along it. In this way, the juice repeatedly washes the inner periphery of the main filter cylinder 4 and the outer periphery of the auxiliary filter cylinder 5.

[0025] After the juice enters between the main filter cartridge 4 and the auxiliary filter cartridge 5, it will pass through the auxiliary filter cartridge 5 and the main filter cartridge 4 under the action of gravity and flow to the space between the main filter cartridge 4 and the filter cloth 3. Then, under the action of its own weight and the pressure inside the shell 1, the juice passes through the through holes of the filter cloth 3 and the support cylinder 2 and enters the space between the support cylinder 2 and the shell 1. Finally, it is discharged through the drain port 102 to the next process. As filtration proceeds, the pulp particles gradually accumulate on the filter cloth 3 from bottom to top, causing the liquid level of the juice on the inside of the filter cloth 3 to gradually rise. At the same time, since the juice between the main filter cartridge 4 and the auxiliary filter cartridge 5 flows to the space between the filter cloth 3 and the main filter cartridge 4 by the liquid level difference, the liquid level of the juice between the filter cloth 3 and the main filter cartridge 4 is slightly lower than the liquid level of the juice between the main filter cartridge 4 and the auxiliary filter cartridge 5.

[0026] As the juice passes through the main filter cartridge 4 and the secondary filter cartridge 5, fruit pulp particles gradually accumulate on the inner circumference of the main filter cartridge 4 and the outer circumference of the secondary filter cartridge 5. When the juice flows downward along the outer circumference of the secondary filter cartridge 5, it impacts the particles adhering to the outer circumference, causing them to detach. Simultaneously, during the flow of juice along the outer circumference of the secondary filter cartridge 5, the axial flow of the juice increases the flow resistance that the juice between the main filter cartridge 4 and the secondary filter cartridge 5 must overcome to pass through the secondary filter cartridge 5. This, in turn, causes a large amount of juice between the main filter cartridge 4 and the secondary filter cartridge 5 to pass through the main filter cartridge 4. This process causes particles detached from the secondary filter cartridge 5 to move towards the inner side of the main filter cartridge 4 along with the juice. During this movement, the particles gradually sink due to gravity. Subsequently, when the juice washes the inner circumference of the main filter cartridge 4, similarly, the particles adhering to the inner circumference of the main filter cartridge 4 detach and begin to move towards the outer circumference of the secondary filter cartridge 5. During this movement, the particles gradually sink, and eventually, the particles are deposited at the bottom of the main filter cartridge 4 and the secondary filter cartridge 5. This maintains the filtration efficiency of the main filter cartridge 4 and the secondary filter cartridge 5 and reduces the probability of fruit pulp particles passing through the main filter cartridge 4 and the secondary filter cartridge 5.

[0027] Example 2 This embodiment is a further optimization based on Embodiment 1.

[0028] See Figures 3 to 7 An inner baffle cylinder 12 is slidably connected to the inner limit of the secondary filter cylinder 5. The inner baffle cylinder 12 is used to block the filter holes on the surface of the secondary filter cylinder 5. Initially, the filter holes on the secondary filter cylinder 5 are blocked by the inner baffle cylinder 12. The juice washes the outer periphery of the secondary filter cylinder 5, causing most of the juice to flow towards the inner side of the main filter cylinder 4. A first spring 13 is fixedly connected between the lower side of the inner baffle cylinder 12 and the secondary filter cylinder 5. An outer baffle cylinder 14 is slidably connected to the outer side of the main filter cylinder 4. The outer baffle cylinder 14 is used to block the filter holes on the surface of the main filter cylinder 4. Initially, the outer baffle cylinder 14 does not block the filter holes of the main filter cylinder 4. A second spring 15 is fixedly connected between the lower side of the outer baffle cylinder 14 and the main filter cylinder 4. Both the inner baffle cylinder 12 and the outer baffle cylinder 14 are in contact with the guide ring 8 through a connecting rod.

[0029] The above setup enables the inner shielding cylinder 12 and the outer shielding cylinder 14 to block the filter holes on the main filter cylinder 4 and the secondary filter cylinder 5, thereby further guiding the flow of juice between the main filter cylinder 4 and the secondary filter cylinder 5. When flushing the main filter cylinder 4, the filter holes of the main filter cylinder 4 are actively blocked, and when flushing the secondary filter cylinder 5, the filter holes of the secondary filter cylinder 5 are actively blocked, preventing particles from passing through the main filter cylinder 4 and the secondary filter cylinder 5.

[0030] See Figure 3 and Figure 6 The length of the inner baffle cylinder 12 is less than the length of the secondary filter cylinder 5, and the length of the outer baffle cylinder 14 is less than the length of the main filter cylinder 4. This is to ensure that the juice can always pass through the lower filter holes of the main filter cylinder 4 and the secondary filter cylinder 5, so that the juice between the main filter cylinder 4 and the secondary filter cylinder 5 always has a downward flow tendency, thus causing the juice to move its internal particles downward.

[0031] See Figure 8 and Figure 9 A take-up coil 16 is fixedly connected inside the housing 1. Multiple take-up coils 16 can be arranged in a ring to provide a uniform circumferential traction force for the counterweight ring 18. The projection of the take-up coil 16 on the horizontal plane is located outside the projection of the main filter cylinder 4 on the horizontal plane and inside the projection of the filter cloth 3 on the horizontal plane. A pull rope 17 is wound inside the take-up coil 16. The lower end of the pull rope 17 is fixedly connected to the counterweight ring 18. The counterweight ring 18 is fixedly connected to an elastic scraper 19 that contacts the inner side of the filter cloth 3. The elastic scraper 19 is used to scrape off the fruit residue adhering to the inner side of the filter cloth 3. The elastic scraper 19 is made of rubber. The inner diameter of the elastic scraper 19 gradually increases from bottom to top, that is, the upper part of the elastic scraper 19 gradually expands outward.

[0032] It is important to understand that the process of filtering juice through the filter cloth 3 relies on external pressure to squeeze the juice, which eventually passes through the filter cloth 3. Furthermore, since the mesh size of the filter cloth 3 is smaller than the smallest fruit pulp particle, the elastic scraper 19 will not squeeze the fruit pulp particles and allow them to pass through the filter cloth 3.

[0033] See Figure 3 , Figure 7 , Figure 8 and Figure 10 A sealing ring 20 is slidably connected to the lower part of the support cylinder 2, and an electromagnet 21 is installed thereon. The electromagnet 21 is located below the sealing ring 20 and is used to control the up and down position of the sealing ring 20. Initially, the sealing ring 20 is kept in contact with the support cylinder 2 under the magnetic force of the electromagnet 21. The lower part of the support cylinder 2 is provided with a plurality of annularly distributed inner connecting holes 201 and a plurality of annularly distributed outer connecting holes 202. The number and shape of the inner connecting holes 201 and the outer connecting holes 202 can be adjusted according to the actual situation. The adjustment aims to ensure the structural stability of the support cylinder 2 while facilitating the discharge of particles accumulated at the bottom of the filter cloth 3 and the main filter cylinder 4; the projections of all internal connecting holes 201 on the horizontal plane are located within the projection of the main filter cylinder 4 on the horizontal plane, and the projections of all external connecting holes 202 on the horizontal plane are located outside the projection of the main filter cylinder 4 on the horizontal plane and within the projection of the filter cloth 3 on the horizontal plane; the sealing ring 20 is used to block the internal connecting holes 201 and the external connecting holes 202, and a slag discharge port 103 is provided on the lower side inside the housing 1.

[0034] The above setup enables the periodic opening of the sealing ring 20 to carry out the accumulated particles by the flow of juice, thereby reducing the particle volume inside the shell 1 and facilitating continuous production.

[0035] Example 3 This embodiment is a further optimization based on embodiment 2.

[0036] See Figure 8 and Figure 10 A tripod 22 is fixedly connected to the middle of the support cylinder 2, and a flexible shield 23 is fixedly connected to the tripod 22. The flexible shield 23 is located below the secondary filter cylinder 5, and the maximum diameter of the flexible shield 23 is greater than the diameter of the secondary filter cylinder 5. A float 24 is fixedly connected to the middle of the flexible shield 23, and the float 24 is used to change the shape of the flexible shield 23.

[0037] The above configuration enables the flexible shielding member 23 to block the juice flowing downward along the outer periphery of the secondary filter cylinder 5, reducing the probability of juice impacting and accumulating particles at the bottom of the main filter cylinder 4. In addition, after the juice surface submerges the flexible shielding member 23, the buoyancy of the float 24 changes the shape of the flexible shielding member 23, making it change from concave to convex. In this state, the juice stored between the main filter cylinder 4 and the secondary filter cylinder 5, together with the flexible shielding member 23, counteracts the impact force of the juice flowing downward along the secondary filter cylinder 5. At the same time, it facilitates the guidance of particles to deposit on the periphery below the flexible shielding member 23, making the state of the deposited particles more stable.

[0038] Example 4 This embodiment is a further optimization based on embodiment 3.

[0039] See Figure 1 , Figure 2 and Figure 8 A liquid level sensor 25 and an electric pressure regulating valve 26 are installed on the upper side of the housing 1. The liquid level sensor 25 is used to monitor the liquid level of the juice between the filter cloth 3 and the main filter cylinder 4. By using the height of the liquid level, the degree of particles adsorbed on the inner circumference of the filter cloth 3 is inferred, thereby determining whether the filter cloth 3 needs to be cleaned. (See...) Figure 8 The maximum diameter of the upper part of the main filter cartridge 4 is equal to the inner diameter of the shell 1, meaning the upper part of the main filter cartridge 4 fits snugly against the shell 1, dividing the interior of the shell 1 into two regions: an annular region between the outer periphery of the support cartridge 2 and the shell 1, and a region formed by the inner side of the support cartridge 2 and the upper part of the shell 1. The annular region between the outer periphery of the support cartridge 2 and the shell 1 is connected to the outside through the drain port 102. Therefore, by controlling the stability of the pressure on the inner side of the filter cloth 3 (i.e., the inner region of the support cartridge 2) by the electric pressure regulating valve 26, the pressure difference between the inner and outer sides of the filter cloth 3 can be controlled, thus maintaining stability during the initial filtration period. Maintaining stable pressure allows the filter cloth 3 to filter the juice at a suitable pressure. On the other hand, after the elastic scraper 19 cleans the filter cloth 3 and the sealing ring 20 opens, causing the liquid level inside the filter cloth 3 to drop, the electric pressure regulating valve 26 actively reduces the pressure inside the filter cloth 3, thereby allowing the liquid level inside the filter cloth 3 to quickly recover and preventing the pectin accumulated inside the filter cloth 3 from solidifying and causing blockage. After the liquid level recovers, the pressure inside the filter cloth 3 is gradually increased to keep the liquid level stable. When the pressure inside the filter cloth 3 is equal to the initially set pressure, the elastic scraper 19 is activated to clean the filter cloth 3.

[0040] Example 5 This embodiment provides a production process for an apple beverage, utilizing the aforementioned filtration equipment for apple beverage production. (See [link]). Figures 1-10 The specific steps are as follows: S1: After the apples are washed, chopped and pressed, they become apple juice. The juice is transported through the inlet 101 to the main filter cartridge 4 and the auxiliary filter cartridge 5 in the shell 1 for coarse filtration. Then the juice flows through the main filter cartridge 4 and the auxiliary filter cartridge 5 and flows to the main filter cartridge 4 and the filter cloth 3 for fine filtration. Finally, the juice passes through the filter cloth 3 and is discharged through the drain outlet 102. S2: Intermittently start the power push rod 7. The power push rod 7 drives the guide ring 8 to move up and down reciprocally, so that the juice is guided by the guide cone 6 and the guide ring 8 to successively flush the inner circumference of the main filter cylinder 4 and the outer circumference of the auxiliary filter cylinder 5, causing the particles adsorbed on the inner circumference of the main filter cylinder 4 and the outer circumference of the auxiliary filter cylinder 5 to fall off. At the same time, the movement of the guide ring 8 drives the inner shielding cylinder 12 and the outer shielding cylinder 14 to move synchronously, changing the flow direction of the juice between the main filter cylinder 4 and the auxiliary filter cylinder 5, so that the particles follow the juice to flow back and forth between the main filter cylinder 4 and the auxiliary filter cylinder 5. With the influence of the particle's own weight, the particles gradually sink. S3: As the filtration time increases, the liquid level of the juice inside the filter cloth 3 gradually rises. The liquid level sensor 25 continuously monitors the liquid level of the juice, and the electric pressure regulating valve 26 maintains the pressure inside the filter cloth 3. After the liquid level of the juice reaches the threshold, the coil take-up device 16 starts and controls the elastic scraper 19 to move upward, so that the particles adsorbed on the inner periphery of the filter cloth 3 are detached and enter a suspended state. Under the action of their own weight, the particles gradually sink to the lower part of the filter cloth 3. S4: Periodically turn on the electromagnet 21 to release the sealing ring 20 from blocking the inner connecting hole 201 and the outer connecting hole 202, so that the particles deposited at the bottom can be discharged through the slag discharge port 103 along with the juice. Then control the sealing ring 20 to re-block the inner connecting hole 201 and the outer connecting hole 202. S5: When the elastic scraper 19 cleans the inside of the filter cloth 3 and the inner connecting hole 201 and the outer connecting hole 202 are opened, the liquid level inside the filter cloth 3 drops rapidly. At this time, the pressure inside the filter cloth 3 is reduced by the electric pressure regulating valve 26 so that the liquid level inside the filter cloth 3 can be restored quickly. After the liquid level is restored, the electric pressure regulating valve 26 is controlled to gradually increase the pressure inside the filter cloth 3 to keep the liquid level inside the filter cloth 3 stable and prevent the pectin residue inside the filter cloth 3 from coagulating and causing the filter cloth 3 to become blocked.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A filtration device for apple beverage production, characterized in that, include: A housing (1) has an inlet (101) and a drain (102) on its upper and lower sides, respectively. A support cylinder (2) is placed inside the housing (1). A filter cloth (3) is placed inside the support cylinder (2). The support cylinder (2) is used to maintain the shape stability of the filter cloth (3). A main filter cylinder (4) is placed inside the support cylinder (2). The main filter cylinder (4) and the support cylinder (2) together clamp the two ends of the filter cloth (3). A secondary filter cylinder (5) is fixed inside the main filter cylinder (4). The secondary filter cylinder (5) is provided with multiple connecting channels (5). 01), the connecting channel (501) connects the inner side of the auxiliary filter cylinder (5) with the outer side of the main filter cylinder (4). The upper side of the auxiliary filter cylinder (5) is fixedly connected to a guide cone top (6). The housing (1) is equipped with a power push rod (7). The telescopic end of the power push rod (7) passes through the housing (1) and is fixedly connected to a guide ring (8). The guide ring (8) and the guide cone top (6) are used together to change the flow direction of the juice. The housing (1) is fixedly connected to a fixing spring (9). The fixing spring (9) is fixedly connected to a squeezing ring (10) that contacts the main filter cylinder (4).

2. A filtration device for apple beverage production according to claim 1, characterized in that, A guide tube (11) is fixedly connected to the upper side of the guide cone top (6). The guide tube (11) is used to guide the juice to flow along the outer side wall of the guide cone top (6) and the auxiliary filter tube (5). The minimum diameter of the guide ring (8) is greater than the inner diameter of the feed inlet (101). The guide cone top (6), the guide ring (8), the guide tube (11) and the feed inlet (101) are all coaxial. The maximum diameter of the guide cone top (6) is greater than the inner diameter of the feed inlet (101).

3. A filtration device for apple beverage production according to claim 2, characterized in that, The inner shielding cylinder (12) is slidably connected to the inner limit of the secondary filter cylinder (5). The inner shielding cylinder (12) is used to shield the filter holes on the surface of the secondary filter cylinder (5). A first spring (13) is fixed between the lower side of the inner shielding cylinder (12) and the secondary filter cylinder (5). An outer shielding cylinder (14) is slidably connected to the outer side of the main filter cylinder (4). The outer shielding cylinder (14) is used to shield the filter holes on the surface of the main filter cylinder (4). A second spring (15) is fixed between the lower side of the outer shielding cylinder (14) and the main filter cylinder (4). Both the inner shielding cylinder (12) and the outer shielding cylinder (14) are in contact with the guide ring (8) through a connecting rod.

4. A filtration device for apple beverage production according to claim 3, characterized in that, The length of the inner shielding cylinder (12) is less than the length of the secondary filter cylinder (5), and the length of the outer shielding cylinder (14) is less than the length of the main filter cylinder (4), so that the juice can always pass through the lower filter holes of the main filter cylinder (4) and the secondary filter cylinder (5).

5. A filtration device for apple beverage production according to claim 4, characterized in that, A take-up cord (16) is fixedly connected inside the housing (1). A pull cord (17) is wound inside the take-up cord (16). A counterweight ring (18) is fixedly connected to the lower end of the pull cord (17). An elastic scraper (19) is fixedly connected to the counterweight ring (18) and contacts the inner side of the filter cloth (3). The elastic scraper (19) is used to scrape off the fruit residue adhering to the inner side of the filter cloth (3).

6. A filtration device for apple beverage production according to claim 5, characterized in that, The lower part of the support cylinder (2) is slidably connected to a sealing ring (20) and an electromagnet (21) is installed thereon. The electromagnet (21) is used to control the up and down position of the sealing ring (20). The support cylinder (2) is provided with an inner connecting hole (201) and an outer connecting hole (202) near the sealing ring (20). The projection of the inner connecting hole (201) on the horizontal plane is located within the projection of the main filter cylinder (4) on the horizontal plane. The projection of the outer connecting hole (202) on the horizontal plane is located within the projection of the filter cloth (3) on the horizontal plane and outside the projection of the main filter cylinder (4) on the horizontal plane. The sealing ring (20) is used to block the inner connecting hole (201) and the outer connecting hole (202). A slag discharge port (103) is provided on the lower side of the housing (1).

7. A filtration device for apple beverage production according to claim 6, characterized in that, The support cylinder (2) is fixedly connected to a tripod (22), and the tripod (22) is fixedly connected to a flexible shield (23). The flexible shield (23) is located below the secondary filter cylinder (5), and the maximum diameter of the flexible shield (23) is greater than the diameter of the secondary filter cylinder (5).

8. A filtration device for apple beverage production according to claim 7, characterized in that, A float (24) is fixed to the middle of the flexible shield (23), and the float (24) is used to change the shape of the flexible shield (23).

9. A filtration device for apple beverage production according to claim 8, characterized in that, A liquid level sensor (25) and an electric pressure regulating valve (26) are installed on the upper side of the housing (1).

10. A production process for an apple beverage, using the filtration equipment for apple beverage production as described in claim 9, comprising the following specific steps: S1: After the apples are washed, chopped and pressed, they become apple juice. The juice is transported through the feed inlet (101) to the main filter cartridge (4) and the auxiliary filter cartridge (5) in the shell (1) for coarse filtration. Then the juice flows through the main filter cartridge (4) and the auxiliary filter cartridge (5) and flows to the main filter cartridge (4) and the filter cloth (3) for fine filtration. Finally, the juice passes through the filter cloth (3) and is discharged through the drain outlet (102). S2: Intermittently start the power push rod (7), the power push rod (7) drives the guide ring (8) to move up and down back and forth, so that the juice is guided by the guide cone top (6) and the guide ring (8) to successively flush the inner circumference of the main filter cylinder (4) and the outer circumference of the auxiliary filter cylinder (5), so that the particles adsorbed on the inner circumference of the main filter cylinder (4) and the outer circumference of the auxiliary filter cylinder (5) fall off. At the same time, the movement of the guide ring (8) drives the inner shielding cylinder (12) and the outer shielding cylinder (14) to move synchronously, changing the flow direction of the juice between the main filter cylinder (4) and the auxiliary filter cylinder (5), so that the particles follow the juice to flow back and forth between the main filter cylinder (4) and the auxiliary filter cylinder (5), and with the influence of the particle's own weight, the particles gradually sink. S3: As the filtration time increases, the liquid level of the juice inside the filter cloth (3) gradually rises. The liquid level sensor (25) continuously monitors the liquid level of the juice. The electric pressure regulating valve (26) maintains the pressure inside the filter cloth (3). After the liquid level of the juice reaches the threshold, the take-up device (16) starts and controls the elastic scraper (19) to move upward, so that the particles adsorbed on the inner periphery of the filter cloth (3) are detached and enter the suspension state. The particles gradually sink to the lower part of the filter cloth (3) under their own weight. S4: Periodically turn on the electromagnet (21) to release the sealing ring (20) from blocking the inner connecting hole (201) and the outer connecting hole (202), so that the particles deposited at the bottom can be discharged through the slag discharge port (103) along with the juice. Then control the sealing ring (20) to re-block the inner connecting hole (201) and the outer connecting hole (202). S5: When the elastic scraper (19) cleans the inside of the filter cloth (3) and the inner connecting hole (201) and the outer connecting hole (202) are opened, the liquid level inside the filter cloth (3) drops rapidly. At this time, the pressure inside the filter cloth (3) is reduced by the electric pressure regulating valve (26) so that the liquid level inside the filter cloth (3) can be restored quickly. After the liquid level is restored, the electric pressure regulating valve (26) is controlled to gradually increase the pressure inside the filter cloth (3) to keep the liquid level inside the filter cloth (3) stable and prevent the pectin residue inside the filter cloth (3) from condensing and causing the filter cloth (3) to become blocked.

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