A novel germ extruder

Abstract

This utility model belongs to the field of extrusion technology and discloses a novel germ extruder, including a base. A variable frequency reduction drive device is fixedly installed on one end of the base. The power output end of the variable frequency reduction drive device is connected to a rotating shaft assembly through a coupling. A feeding seat is provided near the variable frequency reduction drive device on the rotating shaft assembly. A wire mesh assembly is sealed to the end of the feeding seat away from the variable frequency reduction drive device. A discharge seat is sealed to the end face of the wire mesh assembly away from the feeding seat. The rotating shaft assembly is rotatably installed inside the feeding seat, the wire mesh assembly, and the discharge seat. This utility model has a simple overall structure and can efficiently dehydrate corn germ and similar materials, significantly reducing equipment operating energy consumption, improving dehydration effect and single-unit processing capacity, reducing germ breakage rate, avoiding filter clogging, and improving the overall performance.

Description

Technical Field

[0001] This utility model belongs to the field of extrusion technology, specifically, it relates to a novel germ extruder. Background Technology

[0002] In the deep processing of corn-based agricultural products, the dehydration of plant germ is a crucial production step for starch and alcohol companies. The dehydration effect directly impacts subsequent processing efficiency, product quality, and overall production costs. Currently, the most widely used germ dehydration equipment in the industry is the 500P model. This type of equipment is equipped with a 6P-37KW variable frequency motor and uses a variable diameter and variable pitch design to achieve a fixed compression ratio, thus realizing germ dehydration.

[0003] However, the existing 500P germ dehydrator faces several technical bottlenecks in practical applications: First, it has high energy consumption, with a 37KW motor power resulting in high electricity costs, which is inconsistent with the current industry trend of energy conservation and emission reduction; second, the dehydration effect is not ideal, and the high moisture content not only increases the steam consumption in the subsequent drying process but may also affect the storage stability of the germ, making it prone to mold and other problems; third, the processing capacity is too small, making it difficult to meet the high-efficiency requirements of large-scale production. To meet the needs of large-scale processing, multiple machines need to be purchased, which increases both equipment investment costs and the floor space required.

[0004] Meanwhile, existing similar extrusion dehydration equipment generally suffers from common technical defects. A Chinese patent application (CN202520187450.X) discloses a corn germ dehydrator, including a base. A drive assembly is fixedly installed at one end of the base, and a transmission shaft is fixedly connected to the power output end of the drive assembly. An internal filter conveying assembly is fixedly installed at the other end of the transmission shaft. A discharge box, a water filter box, and a feed box are sequentially fixedly installed on the base at positions corresponding to the other end of the transmission shaft. The discharge box, water filter box, and feed box are interconnected. A transmission output shaft is fixedly installed at the other end of the internal filter conveying assembly. The transmission shaft, internal filter conveying assembly, and transmission output shaft are simultaneously rotatably installed in the discharge box, water filter box, and feed box. A squeezing cylinder is fixedly installed inside the water filter box. The internal filter conveying assembly is rotatably connected to the squeezing cylinder, and its outer surface contacts the inner wall of the squeezing cylinder. This invention has a simple overall structure, can fully dehydrate and squeeze corn germ material, and prevents material from clumping during the squeezing process, thus improving the performance. Although the patent attempts to solve the problems of material agglomeration and filter pore blockage by combining multiple sets of cage components, variable pitch spiral blades and internal filter conveying components, the equipment does not involve flexible adjustment of the compression ratio, and does not optimize for problems such as high germ breakage rate and unstable extrusion pressure, resulting in limited improvement in dehydration efficiency and material quality.

[0005] In addition, a Chinese patent application with application number CN202211267636.3 discloses a high-efficiency extruder, including a bottom beam. Its features include: an extrusion cylinder mounted above the bottom beam; a transmission support filter tube coaxially arranged inside the extrusion cylinder; an inner filter assembly mounted on the outer surface of the transmission support filter tube; an inner filter cavity coaxially formed in the middle of the transmission support filter tube; and an inner filter conveying assembly rotatably mounted in the middle of the inner filter cavity. This invention has a simple overall structure, is easy to use, and can fully extrude material, removing moisture and increasing the amount of water extruded, thus improving its performance. However, this patented method uses a traditional rigid compression method, which has limited dehydration efficiency and is prone to germ damage; the screen and filter plate structure design is unreasonable, the filter holes are easily blocked by germ fibers, and the water discharge channel is not smooth; the material is prone to rotate synchronously with the screw shaft during the extrusion process, causing obstruction of propulsion, unstable extrusion pressure, and affecting the uniformity of dehydration, etc., and cannot take into account dehydration efficiency, material integrity and equipment operation stability. Utility Model Content

[0006] The main technical problem to be solved by this utility model is to provide a new type of germ extruder with a simple overall structure, which can efficiently dehydrate corn germ and similar materials, significantly reduce equipment operating energy consumption, improve dehydration effect and single unit processing capacity, reduce germ breakage rate, avoid filter pore blockage, ensure stable extrusion pressure, adapt to different feed rates and moisture requirements, reduce overall production costs, and improve the effect of use.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A novel germ extruder includes a base, on which a variable frequency drive (VFD) is fixedly mounted. The power output end of the VFD is connected to a rotating shaft assembly via a coupling. A feed seat is located near the VFD on the rotating shaft assembly. A mesh cage assembly is sealed to the end of the feed seat away from the VFD. A discharge seat is sealed to the end of the mesh cage assembly away from the feed seat. The rotating shaft assembly is rotatably installed inside the feed seat, mesh cage assembly, and discharge seat. Two sets of material-blocking components are provided at the connection between the feed seat and the mesh cage assembly. Each material-blocking component includes fan blades with a tin bronze alloy star-shaped wheel structure. The fan blades are fitted against the surface of the rotating shaft assembly to prevent the material from rotating synchronously with the shaft, ensuring smooth material feeding and stable extrusion pressure. The outer surface of the rotating shaft assembly is slidably mounted with a counter-pressure cone along the axial direction, and the counter-pressure cone is arranged close to the discharge seat. The counter-pressure cone can work with the mesh cage assembly to achieve flexible extrusion and dewatering of the material, and adjust the size of the material outlet through axial displacement to accurately control the compression ratio. An electric counter-pressure cone drive device is provided on the outer surface of the discharge seat to drive the counter-pressure cone to achieve digital displacement adjustment, adapting to different feed rates and material dewatering dryness requirements.

[0008] The following are further optimizations of the above technical solution by this utility model: The rotating shaft assembly includes a helical shaft section, and helical blades are fixedly mounted on the outer surface of the helical shaft section; The spiral shaft section passes through the feed seat and extends to the middle position of the mesh cage assembly, with the end away from the feed seat coaxially connected to the water filter shaft section; A squeezing shaft section is coaxially fixedly installed at the end of the water filtration shaft section away from the spiral shaft section.

[0009] Further optimization: The outer surface of the filter shaft section is provided with multiple evenly spaced water outlet holes, and the outer surface of the filter shaft section is also provided with multiple evenly spaced trapezoidal guide grooves, and a cross guide plate is fixedly installed inside the filter shaft section.

[0010] Further optimization: The wire mesh cage assembly is composed of multiple wire mesh cage segments of the same specifications, which are fixedly connected end to end along the axial direction, and the structure of each wire mesh cage segment is uniform.

[0011] Further optimization: The outer layer of the mesh cage section is an outer screen sleeve. The inner circumferential surface of the outer screen sleeve is evenly spaced with multiple drainage grooves along the axial direction. The drainage grooves are designed as trapezoidal structures with a groove depth of 3mm. An inner filter plate sleeve is fixedly assembled on the inner surface of the outer screen sleeve. The outer surface of the inner filter plate sleeve is evenly distributed with multiple conical filter holes.

[0012] Further optimization: The counter-pressure cone includes a cone that can be slidably sleeved on the outer surface of the extrusion shaft section. A water storage box is sealed and fixedly connected to the large-diameter end of the cone. The inside of the cone has a hollow cavity structure. Its small-diameter end is arranged towards the direction of the water filtration shaft section, while the large-diameter end is sealed and fixedly connected to the water storage box. The inside of the water storage box is connected to the hollow cavity of the cone. A drain outlet is opened at the edge of the water storage box. The outer circumference of the cone is evenly provided with multiple filter holes, and an outer cover plate is fixedly mounted on the outer surface of the cone. Multiple conical filter holes are evenly distributed on the outer cover plate.

[0013] Further optimization: The outer surface of the outer cover plate forms an annular material outlet between the outer edge of the wire mesh section and the end edge near the cone. The counter-pressure cone can slide axially along the extrusion shaft section to achieve precise adjustment of the opening and closing size of the material outlet.

[0014] Further optimization: The electric reverse pressure cone drive device includes two lead screws arranged symmetrically at intervals. The lead screws are rotatably installed in the preset mounting holes of the discharge seat. A movable sleeve is fixedly assembled at the position corresponding to the lead screw on the outer wall of the reverse pressure cone, and the movable sleeve and the lead screw form a threaded engagement.

[0015] Further optimization: The end of the lead screw away from the wire mesh section is sealed and passes through the discharge seat and is connected to a reducer. One of the reducers is connected to a control motor. The two reducers are connected by a universal joint coupling. The control motor drives the reducers to achieve synchronous rotation and adjusts the forward and backward movement of the counter-pressure cone.

[0016] Further optimization: The power output end of the control motor is also equipped with a digital display device, and the distance the counter-pressure cone moves axially is precisely adjusted through the digital display device.

[0017] The present invention adopts the above technical solution and has the following beneficial effects: This utility model adopts the above-mentioned technical solution, with ingenious conception and reasonable structure. The half-screen frame of the feeding seat realizes the pre-dewatering of materials, and the combination of the mesh cage assembly and the counter-pressure cone completes the deep extrusion dewatering, effectively removing free water from the materials, significantly reducing the moisture content of the materials after dewatering, and reducing the steam consumption in the subsequent drying process. The trapezoidal guide channel and cross guide plate of the filter shaft section, the trapezoidal drainage ditch of the mesh cage section, and the axial trapezoidal ditch of the counter-pressure cone form a synergistic flow guiding system, which accelerates the discharge of water and reduces backflow. With the unified centralized drainage system, the water throughput per unit time is increased, significantly improving the processing capacity of a single unit and adapting to the needs of large-scale production.

[0018] The inner filter plate sleeve and outer cover plate adopt a conical filter hole structure, which is precisely matched with the germ particle size, avoiding the cutting and scratching damage to the germ by the screen holes; the fan blades of the material blocking component are made of tin bronze alloy, which has both wear resistance and self-lubrication properties, and does not damage the material when the spiral blades rotate, thus fully ensuring the integrity of the germ; the counter-pressure cone and the mesh cage component form a shrinking flexible extrusion space, and the extrusion pressure is adjusted by adjusting the axial displacement of the counter-pressure cone, avoiding the material damage caused by traditional rigid extrusion, while ensuring uniform dewatering of the material and improving the consistency of product quality.

[0019] The electric reverse pressure cone drive device, combined with the digital display function of the axial displacement of the reverse pressure cone, can accurately control the opening and closing size of the material outlet, realize flexible adjustment of the compression ratio, adapt to the dehydration needs of different moisture contents, different types of germ and similar materials, and meet diverse process requirements. At the same time, the mesh cage assembly is spliced ​​from multiple mesh cage sections of the same specifications, which facilitates standardized assembly, later maintenance and partial replacement. The sealing and connection structure of each component is reasonably designed, and the disassembly and assembly are convenient, reducing equipment maintenance costs and downtime.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is an internal schematic diagram of the overall structure in an embodiment of the present utility model; Figure 2This is a top view of the overall structure in an embodiment of this utility model; Figure 3 This is a cross-sectional view of the wire mesh section in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the filter shaft section in an embodiment of this utility model; Figure 5 This is a cross-sectional view of the anti-pressure cone in an embodiment of this utility model.

[0022] In the diagram: 1. Base; 2. Variable frequency drive; 21. Variable frequency motor; 22. Planetary reducer; 3. Feed seat; 31. Feed seat water receiving trough; 32. Feed seat half-screen frame; 4. Rotating shaft assembly; 41. Spiral shaft section; 410. Spiral blade; 42. Filter shaft section; 420. Water outlet; 421. Cross guide plate; 43. Extrusion shaft section; 5. Material blocking assembly; 51. Housing; 52. Fan blade; 6. Machine cover; 61. Intermediate water receiving trough; 7. Wire mesh cage assembly; 71. Wire mesh cage section; 710. Drainage ditch; 72. Inner filter plate sleeve; 73. Outer screen sleeve; 8. Counterpressure cone; 81. Cone body; 811. Outer cover plate; 82. Moving sleeve; 83. Drain outlet; 84. Water storage box; 85. Material outlet; 9. Discharge seat; 91. Discharge port; 92. Central shaft water outlet box; 93. Water outlet conduit; 10. Electric counterpressure cone drive device; 11. Lead screw; 12. Reducer; 13. Control motor. Detailed Implementation

[0023] like Figure 1-5 As shown: A novel germ extruder includes a base 1, on which a variable frequency drive 2 is fixedly mounted. The power output end of the variable frequency drive 2 is connected to a rotating shaft assembly 4 via a coupling. A feed seat 3 is provided near the variable frequency drive 2 on the rotating shaft assembly 4. A wire mesh assembly 7 is sealed to the end of the feed seat 3 away from the variable frequency drive 2. A discharge seat 9 is sealed to the end face of the wire mesh assembly 7 away from the feed seat 3. The rotating shaft assembly 4 is rotatably installed inside the feed seat 3, the wire mesh assembly 7, and the discharge seat 9. Two sets of material blocking components 5 are provided at the connection between the feed seat 3 and the wire mesh assembly 7. The material blocking components 5 include fan blades 52 with a tin bronze alloy star-shaped wheel structure. The fan blades 52 are attached to the surface of the rotating shaft assembly 4 to prevent the material from rotating synchronously with the shaft, thus ensuring smooth material feeding and stable extrusion pressure. The outer surface of the rotating shaft assembly 4 is slidably mounted with a counter-pressure cone 8 along the axial direction, and the counter-pressure cone 8 is arranged close to the discharge seat 9. The counter-pressure cone 8 can work with the wire mesh assembly 7 to achieve flexible extrusion and dewatering of materials, and can also adjust the size of the material outlet through axial displacement to precisely control the compression ratio. The outer surface of the discharge seat 9 is provided with an electric counter-pressure cone drive device 10, which is used to drive the counter-pressure cone 8 to achieve digital displacement adjustment and adapt to different feed rates and material dehydration requirements.

[0024] The mesh cage assembly 7 is covered with a machine cover 6, and the two ends of the machine cover 6 are respectively sealed and connected to the feed seat 3 and the discharge seat 9.

[0025] In this embodiment, the variable frequency speed reduction drive device 2 includes a variable frequency motor 21 fixedly installed on the base 1, and the power output end of the variable frequency motor 21 is connected to a planetary speed reducer 22 through a coupling.

[0026] The two components are integrated to form the core power output unit of the equipment. Its core functions are: to achieve flexible speed adjustment through the variable frequency motor 21 to adapt to the processing requirements of different feed amounts; and to complete the speed reduction and torque increase with the help of the planetary reducer 22, providing a stable output torque for the rotating shaft assembly 4 that meets the extrusion requirements. At the same time, it significantly reduces energy consumption compared with the traditional drive structure, which is in line with the energy-saving and high-efficiency design goal of the equipment.

[0027] The rotating shaft assembly 4 includes a spiral shaft section 41 that is connected to the power output end of the planetary reducer 22. The spiral shaft section 41 is fitted with a mechanical seal structure at the joint with the feed seat 3, which can effectively block the leakage channels of materials and squeezed water, and ensure the sealing performance of the equipment.

[0028] The spiral blades 410 are fixedly installed on the outer surface of the spiral shaft section 41. The spiral blades 410 are spirally arranged along the axial direction of the outer surface of the spiral shaft section 41. The spiral helix angle and lead are optimized to generate a stable propulsion force during rotation, driving the material to be conveyed at a uniform speed towards the wire mesh assembly 7, providing a continuous and stable material supply for the subsequent extrusion and dewatering process.

[0029] The spiral shaft section 41 passes through the feed seat 3 and extends to the middle position of the mesh cage assembly 7. The end of the spiral shaft section 41 away from the feed seat 3 is coaxially connected to the water filter shaft section 42, and the two form an integrated transmission structure.

[0030] like Figure 4 As shown, the filter shaft section 42 is a hollow shaft tube made of duplex stainless steel, which has both high strength and corrosion resistance. Multiple evenly spaced water outlet holes 420 are opened on the outer surface of the shaft tube. Each water outlet hole 420 is connected to the internal cavity of the shaft tube, so as to realize the radial permeation and discharge of water squeezed out by the material.

[0031] The outer surface of the filter shaft section 42 is also uniformly provided with multiple trapezoidal guide grooves with a groove depth of 3mm. This structural design can construct a directional drainage channel, which can accelerate the flow of squeezed water along the groove and reduce water retention and back seepage on the shaft tube surface, thereby further improving the dewatering efficiency and dewatering effect.

[0032] The filter shaft section 42 is fixedly installed with a cross guide plate 421, whose core function is to guide the squeezed water in the inner cavity of the shaft tube to be discharged quickly and in a directional manner, so as to avoid water retention.

[0033] The cross-shaped water guide plate 421 is composed of two perpendicularly intersecting flat plates (the flat plates are fixedly connected to the inner wall of the shaft tube). In the intersection area of ​​the two flat plates, a guide inclined plate is added along the length of the shaft tube: the end of the inclined plate near the spiral shaft section 41 is arranged at a high position, and the end near the discharge seat 9 is arranged at a low position, forming an inclined guide surface, which can guide the water flowing into the shaft tube to the direction of the discharge seat 9, further improving the drainage efficiency.

[0034] The end of the filter shaft section 42 away from the spiral shaft section 41 is coaxially fixedly installed with the extrusion shaft section 43. The counter-pressure cone 8 is sleeved on the outer surface of the extrusion shaft section 43 through a sliding fit structure, and can be flexibly displaced along the axial direction of the extrusion shaft section 43 to achieve precise adjustment of the size of the material outlet 85.

[0035] The end of the extrusion shaft section 43 away from the water-filtering shaft section 42 passes through the discharge seat 9 and is rotatably connected to the discharge seat 9 through a bearing assembly. This ensures stable transmission of the extrusion shaft section 43 and achieves a sealed fit with the discharge seat 9, preventing leakage of squeezed water and materials.

[0036] The top of the feeding seat 3 is provided with a feeding port 33. The material to be dehydrated falls precisely into the inner cavity of the feeding seat 3 through the feeding port 33, providing stable feeding for subsequent conveying and pre-dehydration processes.

[0037] Inside the inner cavity of the feed seat 3, a feed seat half-screen frame 32 is fixedly assembled below the spiral shaft section 41. The feed seat half-screen frame 32 adopts a semi-circular arc structure design, and its arc inner diameter is adapted to match the outer diameter of the spiral blade 410. The inner surface of the feed seat half-screen frame 32 and the outer surface of the spiral blade 410 are in close contact to form a sealed pre-extrusion space.

[0038] The bottom of the feed seat 3 is provided with a feed seat water receiving trough 31 below the feed seat half screen frame 32. The feed seat water receiving trough 31 is connected to the external water collection system through an external guide pipe to realize the directional discharge of filtered water.

[0039] With this design, when the material enters the feeding seat 3 from the inlet 33, due to the high initial moisture content, during the rotation and propulsion process of the spiral blades 410, the material is subjected to initial compression by the blades and the half-screen frame 32 of the feeding seat. Some of the free water is quickly filtered out through the screen holes of the half-screen frame 32 of the feeding seat, and flows down along the inner wall of the half-screen frame 32 to the water receiving tank 31 of the feeding seat, and then is discharged in time through the external pipe, completing the pre-dehydration treatment of the material. This lays the foundation for the deep compression dehydration in the subsequent mesh cage assembly 7, while reducing the moisture treatment load of subsequent processes.

[0040] In this embodiment, the feed seat half-screen frame 32 is integrally formed from a perforated plate with a hole diameter of ø3mm.

[0041] The material and aperture design offer multiple technical advantages: Firstly, the ø3mm sieve aperture size precisely matches the particle size of the germ material, preventing the sieve aperture from causing cutting damage to the germ and ensuring material integrity; secondly, the perforated plate has regular hole patterns and uniform hole distribution, which, compared to traditional woven screens, increases the water throughput per unit area and reduces the risk of clogging caused by germ fibers embedding into the sieve apertures; thirdly, the stable water filtration channel and low clogging characteristics ensure the continuity and uniformity of material propulsion during the feeding process, providing a reliable guarantee for the stable operation of the subsequent extrusion and dewatering process.

[0042] The cage assembly 7 is composed of multiple cage sections 71 of the same specifications, which are fixedly connected end to end along the axial direction. The structure of each cage section 71 is uniform, which facilitates standardized assembly and subsequent maintenance and replacement.

[0043] like Figure 3 As shown, the outer layer of the wire mesh section 71 is an outer screen sleeve 73. The outer screen sleeve 73 is made of a drilled plate rolled into a cylindrical structure. Multiple support rings are evenly spaced on its outer circumference, which can effectively enhance the structural strength and resistance to extrusion deformation of the outer screen sleeve 73, and adapt to the high pressure extrusion conditions during the operation of the equipment.

[0044] Both ends of the outer screen sleeve 73 are integrally formed with flange structures. Adjacent mesh cage sections 71 are axially connected in a sealed manner through flanges and fasteners, ensuring the overall structural sealing and stability of the mesh cage assembly 7.

[0045] The inner circumferential surface of the outer screen sleeve 73 is evenly spaced with multiple drainage grooves 710 along the axial direction. The drainage grooves 710 are designed with a trapezoidal structure and a groove depth of 3mm. The flared design of the trapezoidal grooves can form a directional flow channel, which can accelerate the squeezing and filtering of water and quickly collect and discharge it downwards along the grooves, reducing the retention of water on the inner wall of the screen sleeve.

[0046] The inner surface of the outer screen sleeve 73 is fixedly fitted with an inner filter plate sleeve 72. The outer surface of the inner filter plate sleeve 72 is evenly distributed with multiple conical filter holes. The small end of the conical hole faces the material side and the large end faces the outer screen sleeve 73 side. This structural design can effectively avoid the clogging problem caused by germ material embedding into the filter hole, and at the same time greatly reduce the scraping and cutting damage of the filter plate to the germ, ensuring the integrity of the germ material. Moreover, the flow guiding characteristics of the conical hole can ensure the smooth discharge of squeezed water, reduce the accumulation of filtered water and back seepage, ensure the unobstructed water channel, effectively improve the overall dewatering efficiency and operational stability of the equipment, and optimize the comprehensive working performance of the equipment.

[0047] like Figure 5 As shown, the counter-pressure cone 8 includes a cone 81 that is slidably sleeved on the outer surface of the extrusion shaft section 43, and a water storage box 84 is sealed to the large-diameter end of the cone 81.

[0048] The cone 81 has a hollow cavity structure inside, with its small diameter end facing the direction of the water filter shaft section 42, and its large diameter end fixedly connected to the water storage box 84. The interior of the water storage box 84 is connected to the hollow cavity of the cone 81.

[0049] The water storage box 84 has a drain outlet 83 at its edge, and the filtered water can be directed out through the external guide pipe connected to the drain outlet 83.

[0050] The outer circumferential surface of the cone 81 is uniformly provided with multiple water filter holes, and multiple trapezoidal grooves are uniformly arranged along the axial direction. Its structural design, water guiding principle and function are the same as the drainage groove 710 of the outer screen sleeve 73, which can accelerate the flow and collection of squeezed water.

[0051] An outer cover plate 811 is fixedly assembled on the outer surface of the cone 81. Multiple conical filter holes are evenly distributed on the outer cover plate 811. Its hole design, anti-clogging and anti-damage principle and function are fully compatible with the conical filter holes of the inner filter plate sleeve 72, effectively ensuring the smoothness of water filtration and the integrity of germ material.

[0052] The outer surface of the outer cover plate 811 and the end edge of the wire mesh section 71 near the cone 81 form an annular material outlet 85. The counter-pressure cone 8 can slide axially along the extrusion shaft section 43 to achieve precise adjustment of the opening and closing size of the material outlet 85.

[0053] The electric reverse pressure cone drive device 10 drives the reverse pressure cone 8 to move axially along the extrusion shaft section 43, which can flexibly adjust the size of the material outlet 85, thereby accurately controlling the extrusion pressure and material compression ratio inside the equipment, adapting to the dehydration requirements of germ materials with different moisture contents, and realizing the controllability of dehydration dryness.

[0054] The conical structure of the counter-pressure cone 8 forms a contraction extrusion space with the end of the wire mesh assembly 7, which performs secondary deep extrusion on the material that has been initially dewatered by the wire mesh assembly 7, further stripping away the free water in the material and improving the overall dewatering effect.

[0055] The back pressure cone 8 integrates water filter holes, trapezoidal grooves and conical filter hole structure, which can quickly filter out and direct the flow of water after deep extrusion. Together with the hollow cavity and water storage box 84, it forms an integrated water collection and drainage structure to avoid water mixing with the discharged material and ensure the dryness of the material after dehydration.

[0056] Meanwhile, the matching design of the conical filter holes and trapezoidal grooves not only avoids the discharge blockage caused by the germ material embedding in the filter holes, but also reduces the scratch damage between the conical surface and the material. While achieving deep dehydration, it ensures the integrity of the germ material and the continuity and stability of the discharge process.

[0057] The sliding structure design of the counter-pressure cone 8 can dynamically adjust the extrusion parameters according to the actual feed rate and material characteristics, effectively solving the problems of fixed dewatering parameters and poor adaptability of traditional equipment, and improving the overall working flexibility and adaptability of the equipment.

[0058] The bottom of the machine cover 6 is fixedly equipped with an intermediate water receiving trough 61. The water receiving trough is arranged along the axial direction of the mesh cage assembly 7. Its trough outline is adapted to the outer surface of the mesh cage assembly 7. It can completely receive the water filtered out from the mesh cage assembly 7 and achieve directional centralized discharge through an external guide pipe to avoid water accumulation and pollution at the production site.

[0059] In this embodiment, a set of material blocking components 5 is fixedly installed at the transition position between the feed seat 3 and the wire mesh assembly 7 through the housing 51, and another set of material blocking components 5 is installed on the first wire mesh section 71 of the wire mesh assembly 7 through the housing 51. The two sets of components are arranged in an alternating manner along the axial direction. This layout can form multiple points of obstruction on the material propulsion path, effectively disperse the material pressure, and prevent local material congestion.

[0060] The housing 51 is configured as a semi-circle.

[0061] The fan blade 52 of the material blocking assembly 5 is installed inside the housing 51 by a rotating pin. The inner diameter of the housing 51 is adapted to the outer diameter of the fan blade 52, ensuring that the fan blade 52 can rotate flexibly inside the housing 51 without radial movement.

[0062] Correspondingly, the side wall of the cage section 71 is provided with a long groove-shaped clearance opening that is adapted to the fan blade 52, so that the working end of the fan blade 52 can extend into the cage.

[0063] When one of the blades of the fan blade 52 acts within the spiral blade 410, the other blade is located precisely in the long groove-shaped clearance opening, simultaneously forming a seal to prevent material from overflowing from the long groove-shaped clearance opening.

[0064] When the spiral blade 410 rotates, it causes the material to come into contact with the fan blade 52 through friction, driving the fan blade 52 to rotate passively. This dynamically blocks the material from being transported too quickly and evenly distributes the material within the cage, thus preventing material congestion from the source.

[0065] The bottom of the discharge seat 9 is provided with a discharge port 91. After the dry material is dehydrated by deep extrusion through the material outlet 85, it enters the inner cavity of the discharge seat 9 and falls directionally through the discharge port 91 along the guide structure of the discharge seat 9. A material collection container can be adapted to be set below the discharge port 91 to realize the centralized collection of the dehydrated material.

[0066] Both the water filtration shaft section 42 and the extrusion shaft section 43 adopt a hollow shaft tube structure, forming a central water conveying channel inside the equipment, which can guide the filtered water in a directional manner along the axis.

[0067] On the end face of the water storage box 84 away from the cone 81, a central shaft water outlet receiving box 92 is fixedly assembled. The central shaft water outlet receiving box 92 is fitted onto the outer surface of the extrusion shaft section 43 in a sealed manner and is connected to the hollow inner cavity of the water filter shaft section 42 and the extrusion shaft section 43.

[0068] With this design, the water collected in the inner cavities of the filter shaft section 42 and the squeezing shaft section 43 can be directly fed into the central shaft outlet water receiving box 92.

[0069] The central shaft water outlet receiving box 92 is connected to a water outlet conduit 93, and the other end of the water outlet conduit 93 is connected to the intermediate water inlet 61; at the same time, the drain outlet 83 of the back pressure cone 8 is also connected to the water outlet conduit 93 through a pipeline.

[0070] The design constructs a unified drainage system that can concentrate and guide squeezed water from multiple sources, such as the central shaft filter water and the back pressure cone 8 filter water, into the intermediate water inlet 61, achieving unified collection and discharge, and improving the overall drainage efficiency of the equipment and the cleanliness of the site.

[0071] The counter-pressure cone 8 and the central shaft water outlet receiving box 92 are simultaneously sealed and rotated with the extrusion shaft section 43, which not only ensures the smooth rotational transmission of the extrusion shaft section 43, but also achieves a sealed fit with the shaft body to prevent water leakage inside the shaft; at the same time, the counter-pressure cone 8 can slide along the axial direction of the extrusion shaft section 43, without affecting its rotational fit, while realizing flexible adjustment of the opening and closing size of the material outlet 85.

[0072] The electric reverse pressure cone drive device 10 includes two lead screws 11 arranged symmetrically at intervals. The lead screws 11 are rotatably installed in the preset mounting holes of the discharge seat 9. A movable sleeve 82 is fixedly assembled on the outer wall of the reverse pressure cone 8 at a position corresponding to the lead screw 11, and the movable sleeve 82 and the lead screw 11 form a precise threaded engagement.

[0073] The end of the lead screw 11 away from the wire mesh section 71 is sealed and passes through the discharge seat 9 and is connected to a reducer 12. One of the reducers 12 is connected to a control motor 13. The two reducers 12 are connected by a universal joint coupling. The control motor 13 drives the reducers 12 to rotate synchronously and adjust the forward and backward movement of the counter-pressure cone 8.

[0074] The control motor 13 can drive the lead screw 11 to rotate in both directions, and through the threaded transmission, drive the counter-pressure cone 8 to achieve rapid axial displacement along the extrusion shaft section 43, thereby completing the precise control of the opening and closing size of the material outlet 85.

[0075] The two lead screws 11 are connected to the reducer 12 through a universal joint coupling to achieve coaxial transmission, ensuring the rotational synchronization of the two lead screws 11 and guaranteeing the smoothness and displacement accuracy of the axial movement of the counter-pressure cone 8.

[0076] The base 1 is also equipped with a control system for controlling the operation of the extruder near its edge.

[0077] The control terminals of the variable frequency speed reduction drive device 2 and the electric reverse pressure cone drive device 10 are electrically connected to the control system.

[0078] The power output end of the control motor 13 is also equipped with a digital display device.

[0079] The distance the counter-pressure cone 8 moves axially is precisely adjusted by a digital display device. An incremental photoelectric encoder (commercially available) is installed at the output end of the control motor 13, and the incremental photoelectric encoder is electrically connected to the control system.

[0080] When the control motor 13 drives the lead screw 11 to rotate, the incremental photoelectric encoder collects the number of rotations and angle of the lead screw 11 in real time. Combined with the lead screw 11's lead parameter (the axial displacement distance of the moving sleeve 82 for each rotation of the lead screw 11), the control system automatically calculates the axial movement distance through a built-in algorithm: axial movement distance = number of rotations of the lead screw 11 × lead screw 11 + micro-displacement corresponding to the rotation angle, and transmits the calculation result to the digital display screen (LCD / digital tube) for real-time display, realizing the digital and accurate presentation of the axial movement distance of the counter-pressure cone 8.

[0081] During use, target parameters are input through the control system, including the compression ratio corresponding to the material dehydration dryness (associated with the axial displacement of the back pressure cone 8), the speed of the variable frequency motor 21 adapted to the feed rate, the dehydration time threshold, etc., and the digital display device provides real-time feedback of the set parameters.

[0082] The control system first starts the variable frequency reduction drive device 2. After the variable frequency motor 21 is reduced in speed and torque is increased by the planetary reducer 22, it drives the rotating shaft assembly 4 (spiral shaft section 41, water filtering shaft section 42, and extrusion shaft section 43) to rotate smoothly. After confirming that the rotation speed of the rotating shaft assembly 4 is stable, the control system allows the material to be fed in from the feed port of the feed seat 3 and starts the pre-dehydration process.

[0083] The material blocking component 5 rotates passively with the rotation of the spiral blade 410. The control system does not need to actively control it. The material anti-synchronous rotation and uniform propulsion are achieved through the mechanical structure.

[0084] The electric reverse pressure cone drive device 10 controls the motor 13 to start according to the set compression ratio. The motor 13 is driven to rotate synchronously through the reducer 12 and universal joint coupling. The reverse pressure cone 8 is driven to slide axially along the extrusion shaft section 43 through the moving sleeve 82, and the opening and closing size of the material outlet 85 is precisely adjusted. The digital display device updates the displacement in real time.

[0085] If the feed rate or the initial moisture content of the material changes, the control system can receive feedback signals (such as the pressure sensor of the mesh cage assembly 7 and the signal from the moisture detector; the document does not specify the sensor, but it belongs to conventional control logic), and automatically adjust the speed of the variable frequency motor 21 (to adjust the feed propulsion speed) and the displacement of the counter-pressure cone 8 (to correct the compression ratio) to ensure stable dewatering effect.

[0086] The control system does not need to directly control the drainage. It achieves centralized water discharge through the mechanical structure of the preset feed seat water receiving trough 31, intermediate water receiving trough 61, central shaft water outlet receiving box 92 and water outlet pipe 93.

[0087] When the set processing capacity or dehydration time is reached, the control system first stops feeding, maintains the rotating shaft assembly 4 and the back pressure cone 8 in operation until the remaining material is completely discharged, and then sequentially shuts down the electric back pressure cone drive device 10 and the frequency conversion reduction drive device 2 to complete the shutdown.

[0088] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel germ extruder, comprising a base (1), a variable frequency drive (2) fixedly mounted on one end of the base (1), a rotating shaft assembly (4) connected to the power output end of the variable frequency drive (2) via a coupling, a feed seat (3) provided near the variable frequency drive (2) on the rotating shaft assembly (4), a wire mesh assembly (7) sealed to the end of the feed seat (3) away from the variable frequency drive (2), a discharge seat (9) sealed to the end face of the wire mesh assembly (7) away from the feed seat (3), and the rotating shaft assembly (4) rotatably penetrates and is installed inside the feed seat (3), the wire mesh assembly (7) and the discharge seat (9), characterized in that... Two sets of material blocking components (5) are provided at the connection between the feed seat (3) and the wire mesh assembly (7). The material blocking components (5) include fan blades (52) with a star-shaped wheel structure made of tin bronze alloy. The fan blades (52) are attached to the surface of the rotating shaft assembly (4) to prevent the material from rotating synchronously with the shaft, thus ensuring smooth material feeding and stable extrusion pressure. The outer surface of the rotating shaft assembly (4) is slidably mounted with a counter-pressure cone (8) along the axial direction, and the counter-pressure cone (8) is arranged close to the discharge seat (9). The counter-pressure cone (8) can work with the wire mesh assembly (7) to achieve flexible extrusion dewatering of the material, and adjust the size of the material outlet (85) by axial displacement to accurately control the compression ratio. The outer surface of the discharge seat (9) is provided with an electric counter-pressure cone drive device (10) to drive the counter-pressure cone (8) to achieve digital displacement adjustment, adapting to different feed rates and material dewatering dryness requirements.

2. The novel germ extruder according to claim 1, characterized in that... The rotating shaft assembly (4) includes a helical shaft section (41), and helical blades (410) are fixedly mounted on the outer surface of the helical shaft section (41). The spiral shaft section (41) passes through the feed seat (3) and extends to the middle position of the mesh cage assembly (7), with the end away from the feed seat (3) coaxially connected to the water filter shaft section (42); The end of the filter shaft section (42) away from the spiral shaft section (41) is coaxially fixed with the extrusion shaft section (43).

3. A novel germ extruder according to claim 2, characterized in that... The outer surface of the filter shaft section (42) is provided with a plurality of evenly spaced water outlet holes (420), and the outer surface of the filter shaft section (42) is also provided with a plurality of evenly spaced trapezoidal guide grooves. A cross guide plate (421) is fixedly installed inside the filter shaft section (42).

4. A novel germ extruder according to claim 3, characterized in that... The wire mesh assembly (7) is composed of multiple wire mesh segments (71) of the same specifications, which are fixedly connected end to end along the axial direction. The structure of each wire mesh segment (71) is uniform.

5. A novel germ extruder according to claim 4, characterized in that... The outer layer of the mesh cage section (71) is an outer screen sleeve (73). The inner circumferential surface of the outer screen sleeve (73) is evenly spaced with multiple drainage grooves (710) along the axial direction. The drainage grooves (710) are designed as trapezoidal structures with a groove depth of 3mm. An inner filter plate sleeve (72) is fixedly assembled on the inner surface of the outer screen sleeve (73). The outer surface of the inner filter plate sleeve (72) is evenly distributed with multiple conical filter holes.

6. A novel germ extruder according to claim 5, characterized in that... The counter-pressure cone (8) includes a cone (81) that is slidably sleeved on the outer surface of the extrusion shaft section (43). The large-diameter end of the cone (81) is sealed and fixedly connected to a water storage box (84). The inside of the cone (81) is a hollow cavity structure. Its small-diameter end is arranged in the direction of the water filter shaft section (42), and its large-diameter end is sealed and fixedly connected to the water storage box (84). The inside of the water storage box (84) is connected to the hollow cavity of the cone (81). A drain outlet (83) is opened at the edge of the water storage box (84). The outer circumferential surface of the cone (81) is uniformly provided with multiple water filter holes, and an outer cover plate (811) is fixedly mounted on the outer surface of the cone (81). Multiple conical filter holes are uniformly arranged on the outer cover plate (811).

7. A novel germ extruder according to claim 6, characterized in that... The outer surface of the outer cover plate (811) and the end edge of the wire mesh section (71) near the cone (81) form an annular material outlet (85). The back pressure cone (8) can slide axially along the extrusion shaft section (43) to achieve precise adjustment of the opening and closing size of the material outlet (85).

8. A novel germ extruder according to claim 7, characterized in that... The electric reverse pressure cone drive device (10) includes two lead screws (11) arranged symmetrically at intervals. The lead screws (11) are rotatably installed in the preset mounting holes of the discharge seat (9). A movable sleeve (82) is fixedly assembled on the outer wall of the reverse pressure cone (8) at a position corresponding to the lead screw (11), and the movable sleeve (82) and the lead screw (11) form a threaded engagement.

9. A novel germ extruder according to claim 8, characterized in that... The end of the lead screw (11) away from the wire mesh section (71) is sealed and passes through the discharge seat (9) and is connected to a reducer (12). One of the reducers (12) is connected to a control motor (13). The two reducers (12) are connected by a universal joint coupling. The control motor (13) drives the reducer (12) to achieve synchronous rotation and adjust the forward and backward movement of the counterpressure cone (8).

10. A novel germ extruder according to claim 9, characterized in that... The power output end of the control motor (13) is also equipped with a digital display device, and the distance that the counter-pressure cone (8) moves along the axial direction is precisely adjusted through the digital display device.

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