A water treatment apparatus for beverage production

Abstract

This invention discloses a beverage production water treatment device, relating to the field of wastewater treatment technology. It includes a mixing tank, a quartz sand filter, an activated carbon filter, a softening filter, and an ultrafiltration device. The top of the mixing tank is equipped with a reagent additive and a stirrer for adding chemicals to the internal components. The water entering the mixing tank is treated, and the treated water is then filtered through the quartz sand filter, activated carbon filter, softening filter, and ultrafiltration device via pipelines. This invention utilizes a multi-layered filter chamber within the quartz sand filter, forming a quartz sand filtration structure with increasing density from top to bottom. This allows impurities to be three-dimensionally dispersed within the three filter layers, effectively increasing the filter layer's dirt-holding capacity and filter media utilization rate, extending the filtration cycle, stabilizing effluent water quality, reducing backwashing water and energy consumption and filter media wear, and lessening the operational load on subsequent water treatment units.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a beverage production water treatment device. Background Technology

[0002] The cleanliness of water used in beverage production directly determines the taste, shelf life, and production compliance of the finished beverage. Therefore, it needs to undergo a complete pretreatment process: Raw water first enters a mixing tank, where flocculants and disinfectants are added through a chemical additive dispenser on the top of the tank. The water is then thoroughly stirred with a stirrer to form flocs from colloidal and large molecular impurities. Subsequently, the water is transported through pipelines to a quartz sand filter, activated carbon filter, softening filter, and ultrafiltration unit for multi-stage deep treatment. The quartz sand filter, as the core pretreatment equipment, is mainly responsible for intercepting large-particle suspended impurities such as silt, rust, and flocs in the water. This reduces the load on subsequent activated carbon adsorption, resin softening, and ultrafiltration, ensuring the stable operation of subsequent treatment units and extending their service life.

[0003] In the pretreatment process of beverage production water, raw water enters a traditional quartz sand filter after being treated in a mixing tank. These filters generally suffer from structural problems, often employing a single-layer homogeneous quartz sand filter bed or a simple fixed layered structure. Both the filter bucket and filter plate are rigidly fixed, leaving the filter media in a static state for extended periods. Impurities are only trapped on the filter layer surface. As the water treatment process continues, impurities easily accumulate on the filter layer surface, resulting in limited dirt-holding capacity, low filter media utilization, and easy caking and failure of the filter media due to adhering contaminants. This leads to problems such as short filtration cycles, excessive backwashing frequency, high water and energy consumption, easy filter media wear, and cumbersome equipment maintenance. It not only fails to reliably guarantee the quality of the pretreated effluent but also increases the operating load of subsequent activated carbon filtration, softening, and ultrafiltration units, making it unsuitable for the long-term, continuous, and stable filtration requirements of beverage production water. Therefore, this invention provides a beverage production water treatment device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of traditional quartz sand filters in the pretreatment of beverage production water, which are caused by the lack of reasonable grading of the filter layer, long-term static filter media, and rigid fixing of the filter bucket and filter plate, resulting in impurities in the water only accumulating on the surface of the filter layer, small filter layer dirt holding capacity, low filter media utilization rate, and easy adhesion of pollutants to the filter media leading to caking and failure of the filter media. The invention provides a beverage production water treatment device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a beverage production water treatment device, comprising: a mixing tank, a quartz sand filter, an activated carbon filter, a softening filter, and an ultrafiltration device, wherein the top of the mixing tank is provided with a reagent additive and a stirrer for adding reagents to the interior, thereby treating the water entering the mixing tank, and the treated water passing through pipes to the quartz sand filter, activated carbon filter, softening filter, and ultrafiltration device for filtration; and filter hoppers, wherein three filter hoppers are provided, and the three filter hoppers are arranged longitudinally inside the quartz sand filter, and are positioned... The bottommost filter bucket is fixedly connected to the quartz sand filter, while the other two filter buckets are slidably connected to the quartz sand filter. The top of the top filter bucket is provided with a first filter plate, the top of the middle filter bucket is provided with a second and a third filter plate, and the top of the bottom filter bucket is provided with a fourth filter plate. A reflux aid is located inside the three filter buckets to circulate the quartz sand particles inside the filter buckets. A pressure regulator is located between the three filter buckets to adaptively adjust the density of the quartz sand as the water flow resistance inside the quartz sand filter increases.

[0006] As a further aspect of the present invention: the size of the three filter buckets decreases sequentially from top to bottom, and the density of the quartz sand inside the three filter buckets decreases sequentially from top to bottom.

[0007] As a further embodiment of the present invention: the reflux aid includes a protective cover fixedly connected to the top of the first filter plate, a drive motor is installed inside the protective cover, a first suspension rod is fixedly connected to the output end of the drive motor, and one end of the first suspension rod extends through to the bottom of the first filter plate and is fixedly connected to a spiral conveying rod, and a fixing sleeve is provided on the outside of the spiral conveying rod, and the outside of the fixing sleeve is fixedly connected to the bottommost filter hopper through a first connecting frame.

[0008] As a further embodiment of the present invention: the return assist device further includes a spiral conveying sleeve fixedly connected to the outer wall of the first suspension rod via a second connecting frame. The spiral conveying sleeve is rotatably connected to the outer wall of the fixed sleeve. Three spiral conveying blades with different pitches are fixedly connected to the outer wall of the spiral conveying sleeve, and the pitches of the three spiral conveying blades decrease sequentially from top to bottom.

[0009] As a further embodiment of the present invention: the pressure regulating device includes a second suspension rod fixedly connected to the top of the first filter plate, and the second suspension rod is fixedly connected to the quartz sand filter. A first fixed ring is fixedly connected to the inner side of the topmost filter hopper, and a first movable ring is slidably connected to the inner side of the first fixed ring. The first movable ring is fixedly connected to the first filter plate, and a second hydraulic damper is installed between the first movable ring and the first fixed ring.

[0010] As a further embodiment of the present invention: the pressure regulating device further includes a second filter plate slidably connected to the inner side of the middle filter hopper, a plurality of third hydraulic dampers are installed between the top of the second filter plate and the upper filter hopper, and the plurality of third hydraulic dampers are distributed at equal distances around the top of the second filter plate, a second fixed ring is fixedly connected to the inner side of the second filter plate, a second movable ring is slidably connected to the inner side of the second fixed ring, and the second movable ring is fixedly connected to the third filter plate, and a plurality of annularly distributed connecting springs are installed between the second movable ring and the second fixed ring.

[0011] As a further embodiment of the present invention: a limiting ring is fixedly connected to the outer side of the second filter plate, an annular limiting groove matching the limiting ring is provided on the inner side of the filter bucket, and the second filter plate is slidably connected to the filter bucket through the limiting ring.

[0012] As a further embodiment of the present invention: the pressure relief adjuster further includes a plurality of first hydraulic dampers installed between the fourth filter plate and the filter hopper arranged in the middle, and the plurality of first hydraulic dampers are arranged in a ring. The top of the fourth filter plate is fixedly connected with a plurality of top rods, one end of each of the plurality of top rods passing through the inner side of the filter hopper above and located below the third filter plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This invention forms a quartz sand filtration structure with increasing density from top to bottom through multiple filter buckets inside the quartz sand filter, so that impurities are three-dimensionally dispersed in the three filter layers, effectively improving the dirt holding capacity of the filter layer and the utilization rate of the filter media, extending the filtration cycle, stabilizing the effluent water quality, reducing the water and energy consumption of backwashing and the loss of filter media, and reducing the operating load of the subsequent water treatment unit.

[0015] 2. This invention uses a PLC controller to intermittently control the operation of the drive motor, which in turn drives the screw conveyor and the screw conveyor sleeve through the first suspension rod, realizing the circulation flow of quartz sand in each filter hopper from top to bottom and from bottom to top. It can achieve online self-cleaning of the filter layer and removal of attached pollutants by relying on the mutual friction of the filter particles, and can maintain the gradient filter layer state of loose upper layer, moderate middle layer and dense lower layer for a long time, avoiding the decay of filtration accuracy and significantly improving the overall practical performance of the equipment.

[0016] 3. When the quartz sand filter layer becomes clogged and the water flow resistance increases, this invention utilizes water pressure as the driving force, in conjunction with the mechanical linkage of various hydraulic dampers, springs, top rods, and sets of fixed and moving rings, to achieve adaptive dynamic gradient adjustment of the density of quartz sand in the three-layer filter hopper. This can automatically clear filter blockage, inhibit filter media caking and breakage, buffer water pressure impact, continuously maintain the graded filtration effect and effluent water quality, extend the filtration cycle, reduce maintenance and energy consumption, and improve the operational stability and service life of the entire beverage production water treatment equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the quartz sand filter of the present invention;

[0019] Figure 3 This is a schematic diagram of the filter bucket structure of the present invention;

[0020] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is an enlarged view of section B in part 3 of the present invention;

[0022] Figure 6 This is an exploded view of the filter hopper and screw conveyor sleeve of the present invention;

[0023] Figure 7 This is an exploded view of the spiral conveying sleeve and the fixed sleeve of the present invention;

[0024] Figure 8 This is an exploded view of the filter hopper of the present invention.

[0025] In the diagram: 1. Mixing tank; 2. Quartz sand filter; 3. Activated carbon filter; 4. Softening filter; 5. Ultrafiltration device; 6. First suspension rod; 7. Filter hopper; 8. First filter plate; 9. Second suspension rod; 10. Top rod; 11. Second filter plate; 12. Third filter plate; 13. Fourth filter plate; 14. Fixed sleeve; 15. First hydraulic damper; 16. Protective cover; 17. Drive motor; 18. Screw conveyor rod; 19. Screw conveyor sleeve; 20. First fixed ring; 21. Second hydraulic damper; 22. First moving ring; 23. Limiting ring; 24. Third hydraulic damper; 25. Second moving ring; 26. Connecting spring; 27. First connecting frame; 28. Second connecting frame; 29. ​​Second fixed ring. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" 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; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0028] Please see Figures 1 to 8This embodiment provides a beverage production water treatment device, including: a mixing tank 1, a quartz sand filter 2, an activated carbon filter 3, a softening filter 4, and an ultrafiltration device 5. The top of the mixing tank 1 is equipped with a reagent additive and a stirrer for adding chemicals to the tank. The water entering the mixing tank 1 is treated, and the treated water is then filtered through pipes via the quartz sand filter 2, activated carbon filter 3, softening filter 4, and ultrafiltration device 5. Three filter hoppers 7 are provided. The filter hoppers 7 are arranged longitudinally inside the quartz sand filter 2. The bottom filter hopper 7 is fixedly connected to the quartz sand filter 2, while the other two filter hoppers 7 are slidably connected to the quartz sand filter 2. The top of the top filter hopper 7 is provided with a first filter plate 8, the top of the middle filter hopper 7 is provided with a second filter plate 11 and a third filter plate 12, and the top of the bottom filter hopper 7 is provided with a fourth filter plate 13. The size of the three filter hoppers 7 decreases from top to bottom, and the density of the quartz sand inside the three filter hoppers 7 decreases from top to bottom.

[0029] First, the water to be treated is supplied into the mixing tank 1 through a pipeline. The water is then treated by adding chemicals through a chemical additive device installed inside the mixing tank 1 and by stirring. Subsequently, the water undergoes multi-stage filtration through a quartz sand filter 2, an activated carbon filter 3, a softening filter 4, and an ultrafiltration device 5. Since this is existing technology, it is not described in detail in this solution.

[0030] When the mixed water to be filtered enters the quartz sand filter 2, it is then filtered through the quartz sand layer inside the filter hopper 7. Because the quartz sand layer is multi-layered and the density of each layer increases progressively from top to bottom, impurities are distributed three-dimensionally throughout the three filter layers, rather than just concentrated on the surface. This significantly improves the dirt-holding capacity and filter media utilization rate of the filter layer, extends the filtration cycle, stabilizes the effluent water quality, and reduces backwashing water and energy consumption and filter media wear, thereby reducing the operating load of subsequent treatment units.

[0031] Please see Figures 2-7The reflux auxiliary device is located inside the three filter hoppers 7 and is used to circulate the quartz sand particles inside the filter hoppers 7. The reflux auxiliary device includes a protective cover 16 fixedly connected to the top of the first filter plate 8. A drive motor 17 is installed inside the protective cover 16. The output end of the drive motor 17 is fixedly connected to a first suspension rod 6. One end of the first suspension rod 6 passes through to the bottom of the first filter plate 8 and is fixedly connected to a spiral conveying rod 18. A fixed sleeve 14 is provided on the outside of the spiral conveying rod 18. The outside of the fixed sleeve 14 is fixedly connected to the bottom filter hopper 7 through a first connecting frame 27. The reflux auxiliary device also includes a spiral conveying sleeve 19 fixedly connected to the outer wall of the first suspension rod 6 through a second connecting frame 28. The spiral conveying sleeve 19 is rotatably connected to the outer wall of the fixed sleeve 14. Three spiral conveying blades with different pitches are fixedly connected to the outer wall of the spiral conveying sleeve 19. The pitches of the three spiral conveying blades decrease sequentially from top to bottom.

[0032] The design of the three spiral conveyor plates with decreasing pitch from top to bottom matches the structure of the three filter hoppers with decreasing size from top to bottom, so that the circulation conveying capacity of each layer of filter material is perfectly matched with the volume of the filter hopper.

[0033] The quartz sand filter 2 is externally equipped with a PLC controller for intermittently controlling the start of the drive motor 17. The PLC controller controls the drive motor 17 to intermittently start and stop. When the drive motor 17 starts, it drives the screw conveyor 18 to rotate via the first suspension rod 6, conveying the quartz sand from the bottom filter hopper 7 to the top filter hopper 7. Simultaneously, the first suspension rod 6 rotates, driving the screw conveyor sleeve 19 to rotate via the second connecting frame 28. This causes the three screw conveyor blades with different pitches on the outside of the screw conveyor sleeve 19 to convey the quartz sand particles from the inside of each filter hopper 7 downwards. These particles then flow back to the top filter hopper 7 via the rotating screw conveyor 18. This allows three types of quartz sand particles with different densities to circulate. During the circulation process, the filter media generates intense inter-particle friction and collision, causing colloids, organic matter, and microbial films adhering to the surface of the quartz sand to automatically detach. This completes full-depth cleaning of the filter layer without stopping the machine. At the same time, the densest quartz sand at the bottom is continuously replenished to the loose top layer, while the gradually compacted quartz sand at the top is transported to the middle and lower layers. This automatically compensates for changes in the density of the filter layer caused by water flow and gravity settling, maintaining a gradient structure of "loose at the top - denser in the middle - densest at the bottom." This avoids the problem of the gradient structure gradually disappearing and the filtration accuracy decreasing significantly after 3-6 months of operation in traditional filters, thereby improving the overall practicality of the device.

[0034] Please see Figures 2-8The pressure regulator, located between the three filter hoppers 7, is used to adaptively adjust the density of the quartz sand as the water flow resistance inside the quartz sand filter 2 increases. The pressure regulator includes a second suspension rod 9 fixedly connected to the top of the first filter plate 8, and the second suspension rod 9 is fixedly connected to the quartz sand filter 2. A first fixed ring 20 is fixedly connected to the inner side of the topmost filter hopper 7, and a first movable ring 22 is slidably connected to the inner side of the first fixed ring 20, and the first movable ring 22 is fixedly connected to the first filter plate 8. A second hydraulic damper 21 is installed between the first movable ring 22 and the first fixed ring 20. The pressure regulator also includes a second filter plate 11 slidably connected to the inner side of the middle filter hopper 7. Multiple third hydraulic dampers 24 are installed between the top of the second filter plate 11 and the upper filter hopper 7, and the multiple third hydraulic dampers 24 are evenly spaced around the top of the second filter plate 11. The second filter plate 11 is fixedly connected to the inner side of a second fixed ring 29, and the inner side of the second fixed ring 29 is slidably connected to a second moving ring 25. The second moving ring 25 is fixedly connected to the third filter plate 12. Multiple annularly distributed connecting springs 26 are installed between the second moving ring 25 and the second fixed ring 29. A limiting ring 23 is fixedly connected to the outer side of the second filter plate 11. An annular limiting groove matching the limiting ring 23 is opened on the inner side of the filter hopper 7. The second filter plate 11 is slidably connected to the filter hopper 7 through the limiting ring 23. The pressure relief adjuster also includes multiple first hydraulic dampers 15 installed between the fourth filter plate 13 and the filter hopper 7 in the middle. The multiple first hydraulic dampers 15 are arranged in annularly. Multiple push rods 10 are fixedly connected to the top of the fourth filter plate 13. One end of each push rod 10 passes through the inner side of the filter hopper 7 above and is located below the third filter plate 12.

[0035] Since the quartz sand layer inside the top filter hopper 7 is generally filtered out large particles of impurities, it will cause accumulation and blockage during long-term use, affecting water flow. As water continues to enter, the water pressure above the top filter hopper 7 increases to a certain limit, pushing the top filter hopper 7 downward to squeeze the third hydraulic damper 24. This causes the second filter plate 11 and the third filter plate 12 to be subjected to the pressure from above, gradually compressing the quartz sand particles at the bottom. At the same time, since the first filter plate 8 is fixed, the top quartz sand layer gradually becomes loose as the top filter hopper 7 gradually moves downward.

[0036] The spring force coefficient of the connecting spring 26 is the same as the bearing capacity of the third hydraulic damper 24, so that when the uppermost filter hopper 7 is pressed down, the third filter plate 12 can squeeze the quartz sand particles at the bottom.

[0037] When the water pressure at the top reaches a certain limit, causing the limiting ring 23 to move to its maximum position, the water pressure pushes the top filter hopper 7 and the middle filter hopper 7 to move downwards synchronously. The first hydraulic damper 15 squeezes the fourth filter plate 13, which in turn squeezes the bottom quartz sand layer, making it gradually denser. As the second filter plate 11, the third filter plate 12, and the middle filter hopper 7 move downwards, the top rod 10 blocks the third filter plate 12, causing the third filter plate 12 to slide relative to the second fixed ring 29 through the second moving ring 25. This increases the space for the quartz sand particles inside the filter hopper 7, thereby gradually loosening the quartz sand particles inside the middle filter hopper 7.

[0038] When the internal water flow resistance of the quartz sand filter 2 gradually increases and the filter layer becomes clogged, the self-driving force of the water pressure, in conjunction with the linkage of the second hydraulic damper 21, the third hydraulic damper 24, the first hydraulic damper 15, the connecting spring 26, the limiting ring 23, the top rod 10, the first fixed ring 20, the first moving ring 22, the second fixed ring 29, and the second moving ring 25, enables adaptive dynamic adjustment of the density of the quartz sand inside the three-layer filter hopper 7. When the top filter hopper 7 becomes clogged due to the accumulation of large particles of impurities and the upper water pressure increases, the water pressure can push the top filter hopper 7 downward and squeeze the third hydraulic damper 24. While keeping the first filter plate 8 fixed, the quartz sand layer inside the upper filter hopper 7 naturally loosens, simultaneously causing the second filter plate 11 and the third filter plate 12 to moderately compress the lower quartz sand. Utilizing the structural characteristics of the connecting spring 26's elastic coefficient matching the bearing capacity of the third hydraulic damper 24, balanced and stable pressure transmission is ensured, achieving regular compaction of the quartz sand inside the middle filter hopper 7. When the top filter hopper 7 moves down to the limit ring 23 reaching the maximum stroke of the annular limit groove inside the filter hopper 7, the top filter hopper 7 and the middle filter hopper 7 move down synchronously under water pressure, squeezing the first hydraulic damper 15 and pushing the fourth filter plate 13 to compress the bottom filter hopper 7. The quartz sand layer is further compacted, which simultaneously improves the filtration accuracy of the bottom filter layer. Meanwhile, as the middle filter hopper 7 moves downward, the top rod 10 provides support and limits the third filter plate 12, causing the third filter plate 12 to slide relative to the second fixed ring 29 via the second moving ring 25. This expands the internal space of the middle filter hopper 7, allowing the quartz sand particles within it to automatically loosen. This creates a gradient adjustment effect: the upper layer is self-loosening, the middle layer can be loosened or tightened as needed, and the lower layer is self-adaptively compacted. This automatically clears filter blockage pores, alleviates surface contamination and prevents a continuous increase in water flow resistance, and maintains a consistent flow of quartz sand from top to bottom within the three filter hoppers 7. The gradient filtration structure with increasing density ensures that impurities of different particle sizes can still be progressively intercepted, stabilizing the effluent water quality. At the same time, the buffer structure of the hydraulic damper and connecting spring 26 can absorb water pressure fluctuations and water hammer impacts, preventing damage to the filter hopper 7 and each filter plate from pressure impacts, preventing the quartz sand filter media from being excessively squeezed, broken, and hardened, effectively extending the filtration cycle and reducing the frequency of backwashing. It can achieve pure mechanical adaptive pressure and density adjustment without additional electrical control and power drive, adapting to the long-term continuous filtration conditions of beverage production water, greatly reducing the frequency of equipment maintenance and operating energy consumption, and improving the operational stability and service life of the entire water treatment equipment.

[0039] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A beverage production water treatment device, characterized in that, include: The mixing tank (1), quartz sand filter (2), activated carbon filter (3), softening filter (4), and ultrafiltration device (5) are provided. The top of the mixing tank (1) is equipped with a reagent additive and a stirrer for adding reagents inside. The water entering the mixing tank (1) is treated. The treated water is filtered through the quartz sand filter (2), activated carbon filter (3), softening filter (4), and ultrafiltration device (5) through pipes. The filter bucket (7) is provided in three parts. The three filter buckets (7) are arranged longitudinally inside the quartz sand filter (2). The bottom filter bucket (7) is fixedly connected to the quartz sand filter (2), and the other two filter buckets (7) are slidably connected to the quartz sand filter (2). The top of the top filter bucket (7) is provided with a first filter plate (8), the middle filter bucket (7) is provided with a second filter plate (11) and a third filter plate (12), and the bottom filter bucket (7) is provided with a fourth filter plate (13). A reflux aid, located inside the three filter hoppers (7), is used to circulate the quartz sand particles inside the filter hoppers (7); The pressure regulator, located between the three filter buckets (7), is used to adaptively adjust the density of the quartz sand as the water flow resistance inside the quartz sand filter (2) increases.

2. The beverage production water treatment equipment according to claim 1, characterized in that, The size of the three filter buckets (7) decreases from top to bottom, and the density of the quartz sand inside the three filter buckets (7) decreases from top to bottom.

3. The beverage production water treatment equipment according to claim 2, characterized in that, The reflux aid includes a protective cover (16) fixedly connected to the top of the first filter plate (8). A drive motor (17) is installed inside the protective cover (16). A first suspension rod (6) is fixedly connected to the output end of the drive motor (17). One end of the first suspension rod (6) extends through to the bottom of the first filter plate (8) and is fixedly connected to a spiral conveying rod (18). A fixing sleeve (14) is provided on the outside of the spiral conveying rod (18). The outside of the fixing sleeve (14) is fixedly connected to the bottom filter hopper (7) through a first connecting frame (27).

4. The beverage production water treatment equipment according to claim 3, characterized in that, The return assist device also includes a spiral conveying sleeve (19) fixedly connected to the outer wall of the first suspension rod (6) via a second connecting frame (28). The spiral conveying sleeve (19) is rotatably connected to the outer wall of the fixed sleeve (14). The outer wall of the spiral conveying sleeve (19) is fixedly connected with three spiral conveying blades with different pitches, and the pitches of the three spiral conveying blades decrease sequentially from top to bottom.

5. The beverage production water treatment equipment according to claim 1, characterized in that, The pressure relief adjuster includes a second suspension rod (9) fixedly connected to the top of the first filter plate (8), and the second suspension rod (9) is fixedly connected to the quartz sand filter (2). A first fixed ring (20) is fixedly connected to the inner side of the topmost filter hopper (7), and a first movable ring (22) is slidably connected to the inner side of the first fixed ring (20). The first movable ring (22) is fixedly connected to the first filter plate (8), and a second hydraulic damper (21) is installed between the first movable ring (22) and the first fixed ring (20).

6. The beverage production water treatment equipment according to claim 5, characterized in that, The pressure relief adjuster also includes a second filter plate (11) slidably connected to the inner side of the middle filter hopper (7). A plurality of third hydraulic dampers (24) are installed between the top of the second filter plate (11) and the upper filter hopper (7), and the plurality of third hydraulic dampers (24) are distributed at equal distances around the top of the second filter plate (11). A second fixed ring (29) is fixedly connected to the inner side of the second filter plate (11). A second moving ring (25) is slidably connected to the inner side of the second fixed ring (29), and the second moving ring (25) is fixedly connected to the third filter plate (12). A plurality of ring-shaped connecting springs (26) are installed between the second moving ring (25) and the second fixed ring (29).

7. The beverage production water treatment equipment according to claim 6, characterized in that, A limiting ring (23) is fixedly connected to the outer side of the second filter plate (11), and an annular limiting groove matching the limiting ring (23) is opened on the inner side of the filter hopper (7), and the second filter plate (11) is slidably connected to the filter hopper (7) through the limiting ring (23).

8. A beverage production water treatment device according to claim 6, characterized in that, The pressure relief adjuster also includes a plurality of first hydraulic dampers (15) installed between the fourth filter plate (13) and the filter hopper (7) set in the middle, and the plurality of first hydraulic dampers (15) are arranged in a ring. The top of the fourth filter plate (13) is fixedly connected to a plurality of top rods (10), and one end of the plurality of top rods (10) respectively penetrates to the inner side of the filter hopper (7) above and is located below the third filter plate (12).

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