A filtration and purification device for distiller's grains

Abstract

This invention discloses a lees filtration and purification device, belonging to the technical field of beer brewing filtration devices. It includes a frame, a filtration mechanism mounted in the middle of the frame, a cleaning mechanism mounted on top of the filtration mechanism, and a solid-liquid separation mechanism mounted at the bottom of the filtration mechanism. The cleaning mechanism includes a hollow shaft capable of both lifting and lateral movement. A lifting seat is mounted at the bottom of the hollow shaft, and a pair of swing arms are hinged inside the lifting seat. Two symmetrically arranged diversion pipes are mounted on the inner bottom of the swing arms, and multiple high-pressure nozzles are mounted on the facing inner sides of each diversion pipe. The solid-liquid separation mechanism includes a collecting hopper, and a reversible skirted conveyor belt is mounted below the collecting hopper. This invention enables online cleaning of the filter cloth, significantly shortening the cleaning time, and allows for optimal angle and distance rinsing of the filter cloth, more effectively removing deep blockages while protecting the filter cloth's performance and extending its service life.

Description

Technical Field

[0001] This invention relates to a lees filtration and purification device, belonging to the technical field of beer brewing filtration devices. Background Technology

[0002] In the beer brewing process, the mash needs to be filtered to separate the wort and malt. Traditional mash filtration devices mainly include trough filters and plate and frame filters. Simply put, trough filters are the traditional choice that relies on gravity for natural filtration, while plate and frame filters are modern equipment that relies on pressure and has higher efficiency.

[0003] After a period of use, traditional plate and frame filters accumulate a large amount of wheat residue on the filter cloth covering both sides of the filter plates, clogging the filter pores. The traditional solution requires manually disassembling each filter plate, transporting them to a designated area, washing the filter cloth with a high-pressure water gun, and then reinstalling the filter plates. This process is time-consuming and labor-intensive, causing the production line to be shut down for extended periods.

[0004] The cleaning effect is greatly affected by human factors, and there are blind spots, making it difficult to ensure that every filter cloth is cleaned thoroughly. In addition, manual rinsing can easily damage the filter cloth fibers due to uneven pressure or incorrect angle, reducing the service life of the filter cloth.

[0005] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to propose a new type of lees filtration and purification device to solve the bottleneck of the existing technology. Summary of the Invention

[0006] To address the shortcomings of the prior art, this invention provides a lees filtration and purification device that enables online cleaning of the filter cloth, significantly shortening the cleaning time, greatly improving equipment utilization and the continuous operation capability of the production line, and rinsing the filter cloth at the optimal angle and distance, which can more effectively remove deep blockages while protecting the filter cloth's performance and extending its service life.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: A filtration and purification device for distiller's grains includes a frame, a filtration mechanism installed in the middle of the frame, a cleaning mechanism installed on the top of the filtration mechanism, the cleaning mechanism cleaning the filtration mechanism online, and a solid-liquid separation mechanism installed at the bottom of the filtration mechanism. The cleaning mechanism includes a hollow shaft that can both lift and move laterally. A lifting seat that can move with the hollow shaft is installed at the bottom end. A pair of swing arms are hinged inside the lifting seat. Two symmetrically arranged diversion pipes are installed on the inner side of the bottom of the swing arms. Multiple high-pressure nozzles are installed on the inner side of the two diversion pipes facing each other. A downward-facing telescopic cylinder is installed inside the bottom end of the hollow shaft. The telescopic cylinder provides power for the swing of the swing arms. The solid-liquid separation mechanism includes a collection hopper, below which is a reversible skirted conveyor belt. A slag collection hopper is located below one end of the skirted conveyor belt, and a washing wastewater collection hopper is located below the other end.

[0008] Furthermore, the upper part of the main body of the swing arm is installed inside the lifting seat via a hinge shaft, and a straight groove is provided in the top of the swing arm; the head of the telescopic cylinder is connected to the middle of the lifting shaft, and the lifting shaft is installed in the straight groove at the top of the swing arm, and the lifting shaft drives multiple swing arms to swing synchronously.

[0009] Furthermore, a flat key is fixedly installed on the outer wall of the hollow shaft. The hollow shaft and the flat key are vertically inserted into the mounting base. The mounting base is mounted on a horizontally arranged linear slide rail via a slider. The linear slide rail is fixedly installed on the top of the frame.

[0010] Furthermore, a transverse lead screw is threadedly connected to the side of the mounting base. The transverse lead screw is parallel to the linear guide rail and rotatably mounted on the top of the frame. One end of the transverse lead screw is connected to the stepper motor, and the other end is connected to the frame through a bearing seat.

[0011] Furthermore, the top of the hollow shaft is connected to the bottom end of the screw of the worm gear screw jack via a rotating component, and the worm gear screw jack is fixedly installed above the mounting base via multiple support rods.

[0012] Furthermore, the skirted conveyor belt is wound laterally around the idler roller, the idler roller is rotatably installed in the bracket, and the bracket is fixed in the frame.

[0013] Furthermore, the lees collection hopper is connected to the lifting component; the washing wastewater collection hopper is fixed to the side of the frame, and a drain outlet is provided at the bottom of the washing wastewater collection hopper.

[0014] Furthermore, the filtration mechanism includes a thrust plate, a clamping plate, and multiple filter plates between them. The clamping plate is connected to the extended end of the hydraulic cylinder, and the cylinder body of the hydraulic cylinder is fixedly installed inside the cylinder seat.

[0015] Furthermore, the thrust plate and the cylinder seat are fixed to the left and right ends of the frame. The thrust plate has a central hole and four corner holes. The wort inlet pipe is installed in the central hole, and the wort outlet pipe is installed in the two corner holes at the bottom.

[0016] Furthermore, both the clamping plate and the filter plate are slidably mounted on the crossbeam of the frame, the filter plate is recessed on both sides, and both sides are covered with filter cloth.

[0017] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: The device integrates a horizontally movable and vertically adjustable cleaning mechanism as well as a swingable and adjustable high-pressure nozzle assembly. Cleaning can be completed directly in the gaps between the filter plates without disassembling any filter plates, which greatly reduces downtime and improves continuous operation capability.

[0018] The swing arm can swing precisely under the drive of the telescopic cylinder, and combined with the lifting and lateral movement of the entire nozzle assembly, the distance between the high-pressure nozzle and the filter cloth surface and the spray angle become continuously adjustable variables. Compared with the fixed or unstable angle of manual rinsing, this device can adjust to the optimal angle to effectively impact stubborn grain particles in the deep pores of the filter cloth, resulting in a more thorough cleaning. It can precisely control the distance between the nozzle and the filter cloth, avoiding impact damage and breakage of the filter cloth fibers caused by excessive distance or uneven water pressure during manual rinsing, thereby significantly extending the service life of the filter cloth and reducing consumable costs.

[0019] By setting up a clever solid-liquid separation mechanism, secondary pollution and resource waste are avoided, and the wheat lees filter cake and lees-containing washing wastewater are separated at the source, thus preventing the two from mixing and causing difficulties in subsequent treatment.

[0020] With its compact structure and good compatibility with existing equipment, the cleaning mechanism is integrated into the top of the filtration unit, while the solid-liquid separation mechanism is installed at the bottom, without occupying much additional lateral space. This device can be used as an integrated unit and is also suitable for technical upgrades of traditional plate and frame filters without significant changes to the workshop layout, making upgrade costs relatively controllable.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an installation diagram of the filtration mechanism; Figure 3 This is a structural diagram of the cleaning mechanism; Figure 4 This is a schematic diagram of the swing arm's drive mechanism; Figure 5 It is a schematic diagram of the lifting shaft, swing arm, and diversion pipe from a top-down perspective; Figure 6 This is a schematic diagram of the solid-liquid separation mechanism.

[0023] In the diagram, 1-frame; 2-filtration mechanism, 21-filter plate, 22-thrust plate, 23-pressure plate, 24-cylinder seat, 25-hydraulic cylinder, 26-malt inlet pipe, 27-wheat outlet pipe; 3-cleaning mechanism, 31-hollow shaft, 32-mounting seat, 33-flat key, 34-worm gear screw jack, 35-support rod, 36-rotating component, 37-slider, 38-linear slide rail, 39-lateral screw, 310-lifting seat, 311-swing arm, 312-hinge shaft, 313-diverter pipe, 314-high pressure nozzle, 315-linear chute, 316-lifting shaft, 317-telescopic cylinder; 4-solid-liquid separation mechanism, 41-collecting hopper, 42-skirted conveyor belt, 43-support, 44-malt slag collection hopper, 45-lifting component, 46-washing wastewater collection hopper. Detailed Implementation

[0024] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0025] like Figures 1-6 As shown in the figure, the present invention provides a filtration and purification device for distiller's grains, including a frame 1, a filtration mechanism 2 installed in the middle of the frame 1, a cleaning mechanism 3 installed on the top of the filtration mechanism 2, the cleaning mechanism 3 cleaning the filtration mechanism 2 online, and a solid-liquid separation mechanism 4 installed at the bottom of the filtration mechanism 2.

[0026] The filtration mechanism 2 includes a thrust plate 22, a clamping plate 23, and multiple filter plates 21 between them. The clamping plate 23 is connected to the extended end of the hydraulic cylinder 25. The cylinder body of the hydraulic cylinder 25 is fixedly installed inside the cylinder seat 24. The hydraulic cylinder 25 clamps the multiple filter plates 21 through the clamping plate 23.

[0027] The thrust plate 22 and the cylinder seat 24 are fixedly connected to the left and right ends of the frame 1. The thrust plate 22 has a central hole and four corner holes. The wort inlet pipe 26 is installed on the central hole, the wort outlet pipe 27 is installed on the two bottom corner holes, and the two top corner holes are washing holes or pressing gas inlets, respectively.

[0028] Both the clamping plate 23 and the filter plate 21 are slidably mounted on the crossbeam of the frame 1. The filter plate 21 is concave on both sides and covered with filter cloth on both sides. The filter cloth allows liquid to pass through and traps solid particles.

[0029] Hydraulic cylinder 25 extends to push clamping plate 23, pressing filter plate 21 against thrust plate 22, forming a filtration chamber between adjacent filter plates 21. Wheat mash enters through wort inlet pipe 26, passes through the central hole into the filtration chamber between each filter plate 21, and the wort passes through filter cloth and exits through wort outlet pipe 27. The spent grains are trapped in the recesses of filter plate 21, forming a filter cake. After pressing, hydraulic cylinder 25 releases clamping plate 23, and the filter plate 21 is moved by a pull-plate trolley to unload the separated solid filter cake. The specific structure of the pull-plate trolley is prior art and will not be described further.

[0030] The cleaning mechanism 3 includes a hollow shaft 31 that can both lift and move horizontally. A flat key 33 is fixedly installed on the outer wall of the hollow shaft 31. The hollow shaft 31 and the flat key 33 are vertically inserted into the mounting base 32. The mounting base 32 is mounted on a horizontally arranged linear slide rail 38 via a slider 37. The linear slide rail 38 is fixedly installed on the top of the frame 1.

[0031] A transverse lead screw 39, threadedly connected to the side of the mounting base 32, is mounted parallel to the linear guide rail 38 and rotatably mounted on the top of the frame 1. One end of the transverse lead screw 39 is connected to a stepper motor, and the other end is connected to the frame 1 via a bearing housing. The stepper motor provides power for the transverse movement of the mounting base 32 and the hollow shaft 31.

[0032] The top of the hollow shaft 31 is connected to the bottom end of the screw of the worm gear screw jack 34 via a rotating component 36. The worm gear screw jack 34 is fixedly installed above the mounting base 32 via multiple support rods 35. The worm gear screw jack 34 provides power for the lifting and lowering of the hollow shaft 31.

[0033] The bottom end of the hollow shaft 31 is equipped with a lifting seat 310 that can move with it. Inside the lifting seat 310, a pair of swing arms 311 are hinged. Two symmetrically arranged diversion pipes 313 are installed on the inner side of the bottom of the swing arms 311. Multiple high-pressure nozzles 314 are installed on the inner side of the two diversion pipes 313 facing each other.

[0034] A downward-facing telescopic cylinder 317 is installed inside the bottom end of the hollow shaft 31. The telescopic cylinder 317 provides power for the swing of the swing arm 311. During the swing, the swing arm 311 adjusts the distance and angle between the high-pressure nozzle 314 and the filter plate 21.

[0035] The upper part of the main body of the swing arm 311 is installed inside the lifting seat 310 through the hinge shaft 312. The swing arm 311 can swing along the hinge shaft 312. A straight slide groove 315 is opened in the top of the swing arm 311. The head of the telescopic cylinder 317 is connected to the middle of the lifting shaft 316. The lifting shaft 316 is installed in the straight slide groove 315 at the top of the swing arm 311. The lifting shaft 316 drives multiple swing arms 311 to swing synchronously.

[0036] The solid-liquid separation mechanism 4 includes a collecting hopper 41, which is installed at the bottom of the filter mechanism 2. A reversible skirted conveyor belt 42 is installed below the collecting hopper 41. The skirted conveyor belt 42 is wound around the idler roller in the transverse direction. The idler roller is rotatably installed in the bracket 43, which is fixedly connected to the frame 1.

[0037] A lees collection hopper 44 is provided below one end of the skirted conveyor belt 42. The lees collection hopper 44 is connected to the lifting component 45 to facilitate the lifting and output of the lees filter cake. A washing wastewater collection hopper 46 is provided below the other end of the skirted conveyor belt 42. The washing wastewater collection hopper 46 is fixed to the side of the frame 1, and a drain outlet is provided at the bottom of the washing wastewater collection hopper 46.

[0038] The specific working principle of this invention: Distillers' grains filtration stage: Hydraulic cylinder 25 pushes clamping plate 23 to press filter plate 21 onto thrust plate 22. The recesses between adjacent filter plates, together with the filter cloth, form a closed filtration chamber. Wheat mash enters each filtration chamber through the center hole of thrust plate 22 via wort inlet pipe 26. Under pressure, wort passes through the filter cloth and is discharged from wort outlet pipe 27 through the bottom corner hole of thrust plate 22, completing purification and collection. The lees are trapped in the recesses of the filter plates by the filter cloth and gradually accumulate to form filter cake. After filtration, hydraulic cylinder 25 releases clamping plate 23, and the pull plate trolley pulls each filter plate 21 apart in sequence. The filter cake falls to the solid-liquid separation mechanism 4 below by gravity.

[0039] Filter cloth online cleaning stage: To avoid filter cloth clogging affecting subsequent filtration, the cleaning mechanism 3 performs automated cleaning without disassembly. A stepper motor moves the hollow shaft 31 laterally along the linear slide rail 38 via a transverse lead screw 39, aligning it with the gap between the filter plates to be cleaned. A turbine lead screw lift 34 drives the hollow shaft 31 to rise and fall, distributing the left and right swing arms 311 at the bottom to both sides of the filter plate 21. A telescopic cylinder 317 pushes the lifting shaft 316, causing the swing arms 311 to swing along the hinge shaft 312, thereby adjusting the distance and angle between the two diversion pipes 313 and their high-pressure nozzles 314 and the filter cloth surface, ensuring all-around rinsing. Cleaning fluid (such as water or solvent) is sprayed from the high-pressure nozzles 314 through the diversion pipes 313, simultaneously rinsing the filter cloth covering both sides of the filter plate 21 and removing residual lees. The cleaning wastewater flows downwards into the solid-liquid separation mechanism 4.

[0040] Solid-liquid separation stage: The collecting hopper 41 receives the fallen wheat bran filter cake and washing wastewater, while the material falls onto the reversible skirted conveyor belt 42. During normal filtration and cake unloading, the skirted conveyor belt 42 rotates forward, sending the wheat bran to the wheat bran collecting hopper 44 at one end, and then being discharged and recycled by the lifting component 45. When the cleaning mechanism is working, the skirted conveyor belt 42 reverses, sending the washing wastewater to the washing wastewater collecting hopper 46 at the other end, and then discharging it into the sewage treatment system through the bottom drain.

[0041] The above description provides examples of the preferred embodiments of the present invention. Parts not detailed herein are common knowledge to those skilled in the art. The scope of protection of the present invention is determined by the claims. Any equivalent modifications based on the technical teachings of the present invention are also within the scope of protection of the present invention.

Claims

1. A device for filtering and purifying distiller's grains, characterized in that: Includes a frame (1), a filter mechanism (2) installed in the middle of the frame (1), a cleaning mechanism (3) installed on the top of the filter mechanism (2), the cleaning mechanism (3) cleans the filter mechanism (2) online, and a solid-liquid separation mechanism (4) installed at the bottom of the filter mechanism (2). The cleaning mechanism (3) includes a hollow shaft (31) that can both lift and move laterally. A lifting seat (310) that can move with the hollow shaft (31) is installed at the bottom end of the hollow shaft (31). A pair of swing arms (311) are hinged inside the lifting seat (310). Two symmetrically arranged diversion pipes (313) are installed on the inner side of the bottom of the swing arms (311). Multiple high-pressure nozzles (314) are installed on the inner side of the two diversion pipes (313) facing each other. A downward-facing telescopic cylinder (317) is installed inside the bottom end of the hollow shaft (31). The telescopic cylinder (317) provides power for the swing of the swing arms (311). The solid-liquid separation mechanism (4) includes a collection hopper (41), and a skirted conveyor belt (42) that can rotate forward and backward is installed below the collection hopper (41). A slag collection hopper (44) is provided below one end of the skirted conveyor belt (42), and a washing wastewater collection hopper (46) is provided below the other end.

2. The lees filtration and purification device as described in claim 1, characterized in that: The upper part of the main body of the swing arm (311) is installed inside the lifting seat (310) via a hinge shaft (312), and a straight groove (315) is provided in the top of the swing arm (311); the head of the telescopic cylinder (317) is connected to the middle of the lifting shaft (316), and the lifting shaft (316) is installed in the straight groove (315) at the top of the swing arm (311), and the lifting shaft (316) drives multiple swing arms (311) to swing synchronously.

3. The lees filtration and purification device as described in claim 1, characterized in that: A flat key (33) is fixedly installed on the outer wall of the hollow shaft (31). The hollow shaft (31) and the flat key (33) are vertically inserted into the mounting base (32). The mounting base (32) is installed on the horizontally arranged linear slide rail (38) through the slider (37). The linear slide rail (38) is fixedly installed on the top of the frame (1).

4. The lees filtration and purification device as described in claim 3, characterized in that: The mounting base (32) has a threaded transverse screw (39) installed on its side. The transverse screw (39) is arranged parallel above the linear slide rail (38) and rotatably mounted on the top of the frame (1). One end of the transverse screw (39) is connected to the stepper motor, and the other end is connected to the frame (1) through the bearing seat.

5. The lees filtration and purification device as described in claim 1, characterized in that: The top of the hollow shaft (31) is connected to the bottom end of the screw of the worm gear screw jack (34) via a rotating part (36). The worm gear screw jack (34) is fixedly installed above the mounting base (32) via multiple support rods (35).

6. The lees filtration and purification device as described in claim 1, characterized in that: The skirted conveyor belt (42) is wound laterally around the idler roller, which is rotatably installed in the bracket (43), and the bracket (43) is fixed in the frame (1).

7. The lees filtration and purification device as described in claim 1, characterized in that: The lees collection hopper (44) is connected to the lifting component (45); the washing wastewater collection hopper (46) is fixed to the side of the frame (1), and a drain outlet is provided at the bottom of the washing wastewater collection hopper (46).

8. The lees filtration and purification device as described in claim 1, characterized in that: The filtration mechanism (2) includes a thrust plate (22), a clamping plate (23) and multiple filter plates (21) between them. The clamping plate (23) is connected to the extended end of the hydraulic cylinder (25), and the cylinder body of the hydraulic cylinder (25) is fixedly installed inside the cylinder seat (24).

9. The lees filtration and purification device as described in claim 8, characterized in that: The thrust plate (22) and the cylinder seat (24) are fixed to the left and right ends of the frame (1). The thrust plate (22) has a central hole and four corner holes. The wort inlet pipe (26) is installed on the central hole, and the wort outlet pipe (27) is installed on the two corner holes at the bottom.

10. The lees filtration and purification device as described in claim 9, characterized in that: The clamping plate (23) and the filter plate (21) are both slidably installed on the crossbeam of the frame (1). The filter plate (21) is concave on both sides and covered with filter cloth on both sides.

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