Multifunctional combined dehydration wringing machine

Abstract

The invention discloses a multifunctional combined dehydration wringing machine which comprises a base, a wringing section box body is installed in the middle of the base, a discharging end box body is arranged at the outlet end of the wringing section box body, a material outlet is formed in the bottom of the discharging end box body, a spiral extrusion device is arranged in the wringing section box body, and a material outlet is formed in the bottom of the discharging end box body. The inlet end of the squeezing section box body is connected with a pre-dehydration box body, a rotary dehydration device is arranged in the pre-dehydration box body, and a pre-dehydration water accumulation hopper is arranged at the bottom of the pre-dehydration box body. The multifunctional combined dehydration wringing machine integrates pre-dehydration and extrusion dehydration, is more suitable for the material dehydration process, the water content of materials is low and uniform, the sealing effect is good, and the problem of water leakage at the feeding end is well solved.

Description

TECHNICAL FIELD

[0001] The present application relates to a multifunctional combined dewatering and wringing machine, belonging to the technical field of wringing equipment. BACKGROUND

[0002] Wringing machines are widely used in food, chemical, environmental protection and other industries. Its working principle is similar to manually squeezing the water in the wet towel. The water in the material is removed by spiral mechanical pressing, so as to achieve the purpose of water removal. The wringing machine mainly separates the liquid in the material by spiral extrusion, so as to realize the dewatering treatment of the material. The wringing machine works by physical pressing without external heat source, the mechanism is simple, and it is suitable for various materials. Therefore, before the material is dried, it is first subjected to wringing and dewatering, which can reduce energy consumption and drying cost, and has high economic value.

[0003] The traditional wringing machine is generally a screw machine, mainly composed of a rack, a driving device, a feeding device, an extrusion dewatering device and a discharging device. The material is sent into the extrusion dewatering section by the feeding device. The distance between the screw shaft of the extrusion dewatering section and the outer box body is non-equal distance. The distance from the feeding section to the discharging end is gradually reduced. Therefore, when the material continuously advances under the action of the screw shaft of the extrusion dewatering section, the pressure it receives also continuously increases. The liquid in the material is squeezed out and flows out from the sieve hole gap of the outer box body, completing the preliminary dewatering.

[0004] In the starch industry, corn germ and epidermal fiber and other raw materials are subjected to preliminary dewatering by the wringing machine before drying. Therefore, the dewatering rate of the wringing machine has a great relationship with the energy consumption of the subsequent drying process. The higher the dewatering rate in the wringing stage, the less the energy consumption in the drying stage, and the lower the drying cost.

[0005] The traditional wringing machine mainly adopts the straight shaft + cone screen, cone shaft + straight screen, multi-section variable diameter + variable spiral mode for extrusion dewatering. The above several forms do not have effective pre-dewatering function, resulting in high water content at the feeding end and much water leakage at the sealing end, thereby causing poor dewatering performance.

[0006] The Chinese invention patent with publication number CN 221349637U discloses a wringing machine, which comprises a rack, a slide, an extruding roller group, a blowing assembly and a roller distance measuring assembly. The slide is symmetrically arranged on both sides of the rack and is perpendicular to the running direction of the object. The extruding roller group has two extruding rollers arranged on both sides of the running direction of the object. The two ends of the extruding roller are provided with sliding seats matched with the slide. The blowing assembly is arranged on the rack and located on the discharging side of the extruding roller group. The roller distance measuring assembly is used to measure the distance between the two extruding rollers. The wringing machine uses extruding and blowing to avoid bringing water into the subsequent process. However, a pneumatic cylinder needs to be additionally provided for a larger air blower, which occupies a larger area and takes a longer time.

[0007] In the starch industry, traditional squeezers primarily subject wet materials to increasing pressure to gradually squeeze out moisture. This traps much of the free water that would otherwise be squeezed out between the materials, making it difficult to squeeze out. This also results in inconsistent moisture content between the internal and external materials, with the internal material having a higher moisture content than the external material, hindering subsequent drying. The presence of a large amount of initial free water at the feed end prevents dehydration, making front-end sealing difficult. Summary of the Invention

[0008] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the invention of this application, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0009] In view of the above problems and / or the problems existing in the prior art, the present invention is proposed.

[0010] The purpose of the present invention is to overcome the problems existing in the prior art and provide a multifunctional combined dehydration and squeezing machine, which integrates pre-dehydration and extrusion dehydration, is more in line with the material dehydration process, greatly reduces the extrusion energy consumption, has a low and uniform moisture content of the material, and has a good sealing effect, which well solves the problem of water leakage at the feed end.

[0011] In order to solve the above technical problems, the present invention provides a multifunctional combined dehydration and squeezing machine, including a base, a squeezing section box body is installed in the middle of the base, the outlet end of the squeezing section box body is provided with a discharge end box body, the bottom of the discharge end box body is provided with a material outlet, the squeezing section box body is provided with a spiral extrusion device, the inlet end of the squeezing section box body is connected to a pre-dehydration box body, the pre-dehydration box body is provided with a rotary dehydration device, and the bottom of the pre-dehydration box body is provided with a pre-dehydration water accumulation bucket.

[0012] Furthermore, the screw extrusion device includes: A conical screen frame is fixed in the squeeze section box and has an inlet diameter larger than an outlet diameter; The extrusion rotor is located in the inner cavity of the conical screen frame, has a hollow structure and is surrounded by spiral blades that push the material toward the outlet end. The outer edge of the spiral blade is against the inner wall of the conical screen frame. The extrusion drive mechanism includes an extrusion motor, an extrusion reduction box and a coupling. The output shaft of the extrusion motor is decelerated by the extrusion reduction box and then drives the extrusion rotor to rotate through the coupling, so that the material is gradually compressed and dehydrated between the conical screen frame and the spiral blades.

[0013] Furthermore, the rotary dehydration device includes: A drum screen is rotatably disposed in the pre-dehydration box and has a plurality of screen holes, and the extrusion rotor coaxially extends to the inner cavity of the drum screen; a rotating drum seat, fixed coaxially with the drum screen and extending out of the feed end of the pre-dehydration box; The drum drive mechanism includes a drum motor, a drum reduction box, a pinion and a large gear fixed to the rotating drum seat. The output shaft of the drum motor is decelerated by the drum reduction box, and then drives the large gear to rotate through the pinion. The large gear drives the rotating drum seat and the drum screen to rotate, and pre-removes free water from the material through centrifugal force.

[0014] Furthermore, a fixed feed pipe is coaxially provided in the inner cavity of the rotating drum seat, the inlet end of which is connected to the chute of the feed hopper, and the outlet end of which is connected to the inner cavity space of the drum screen.

[0015] Furthermore, the squeeze rotor shaft at the outlet end of the extrusion rotor is supported on the side wall of the discharge end box through the squeeze rotor bearing seat; the squeeze rotor shaft at the inlet end of the extrusion rotor passes through the fixed feed pipe and is supported on the inlet end bracket through the squeeze rotor bearing seat, so that the extrusion rotor and the drum screen rotate independently of each other.

[0016] Furthermore, the annular feed channel is formed by the annular gap between the fixed feed pipe and the squeeze rotor shaft passing therethrough, and the inlet end of the fixed feed pipe is provided with a feed sealing seat and a feed sealing member to achieve rotational sealing with the squeeze rotor shaft.

[0017] Furthermore, the discharge end of the fixed feed pipe is supported in the intermediate bearing seat through an intermediate bearing. The intermediate bearing seat is fixed to the center of the end plate of the discharge end of the rotating drum seat, and the center positioning is achieved by the mutual engagement of the annular tenon and the annular groove.

[0018] Furthermore, sealing rings are respectively provided on both sides of the intermediate bearing, and a radially penetrating bearing seat drain port is symmetrically provided at one end of the intermediate bearing seat close to the fixed feed pipe outlet. The bearing seat drain port is connected to the peripheral space of the drum screen in the pre-dehydration box through a drain pipe and a drain joint, and the leaked liquid and material are returned to the pre-dehydration water hopper.

[0019] Furthermore, a packing seal structure is provided between the rotating drum seat and the feed end of the fixed feed pipe to prevent the material and moisture from flowing back to the feed end; the packing seal structure includes: An annular seat plate, fixed to the rotating drum seat; A sealing seat, sleeved on the outer periphery of the fixed feed pipe and fixedly connected to the annular seat plate; Filler, filled in the stuffing box between the sealing seat and the fixed feed pipe; A sealing pressure ring compresses the filler and is adjustably fixed to the annular seat plate.

[0020] Furthermore, the outlet end of the drum screen is connected to a drum inner retaining ring, the outlet end of the drum inner retaining ring is embedded in the groove of the extrusion inlet seat and forms a labyrinth seal to prevent liquid from entering the squeezing section box from the pre-dehydration box; the extrusion inlet seat is fixed to the inlet end of the conical screen frame.

[0021] Furthermore, the outer periphery of the inner retaining ring of the drum is evenly distributed with reinforcing ribs, and a supporting roller is provided around the outer periphery of the reinforcing ribs. The supporting roller is coaxial with the inner retaining ring of the drum and serves as a drum track; the outer periphery of the supporting roller symmetrically supports three supporting wheel assemblies.

[0022] Furthermore, the support wheel assembly includes a support wheel frame, a supporting wheel shaft, a roller support wheel and a top shaft screw. The roller support wheel is installed on the supporting wheel shaft through a sliding bearing and abuts the support roller. The top shaft screw is adjustably arranged on the support wheel frame to lift and lower the supporting wheel shaft, thereby keeping the roller screen coaxial with the extrusion rotor.

[0023] Furthermore, two supporting wheel assemblies are symmetrically supported on both sides of the bottom of the outlet end of the rotating drum seat.

[0024] Furthermore, a spray pipe is provided on the upper part of the pre-dehydration box, and a plurality of nozzles with adjustable directions are provided on the spray pipe for online cleaning of the drum screen; Furthermore, a cleaning and maintenance port is provided on the top of the pre-dehydration box body, and a squeezing section water collection bucket is provided on the bottom of the squeezing section box body.

[0025] Compared with the prior art, the advantages or beneficial effects achieved by the embodiments of the present application include at least: 1. The use of a rotary dehydration and extrusion dehydration method is integrated, which is more in line with the material dehydration process; the material enters the rotary dehydration section from the feed inlet for pre-dehydration, and most of the free water is quickly removed under the action of centrifugal force; then enters the extrusion section to remove the remaining small amount of free water and bound water, so that the overall moisture content of the material is low and uniform, and the dehydration rate of a single device is increased by more than 10%; 2. Pre-dehydration and spiral squeezing are integrated together. The combined structure reduces the floor space, saves space, saves process equipment and pipelines, reduces material transportation costs, and reduces the investment in this section by 50%; 3. A spray device is installed in the pre-dehydration section, which can be connected to an external water pipe to clean the drum screen in the pre-dehydration section to prevent the screen holes from being blocked and ensure that the dehydrated water is discharged smoothly; 4. The unique water-draining mechanism and multi-sealing mechanism are adopted to solve the problem of water leakage at the feed sealing end and reduce the maintenance cost of workers and spare parts. 5. The combination of pre-dehydration and spiral squeezing makes the material present a circular and straight-line motion trajectory. The pre-dehydration mechanism bears gravity and rotational force, and the spiral squeezing mechanism bears axial force and rotational force. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work. The drawings are provided for reference and explanation only and are not intended to limit the present invention. Among them: Figure 1 This is a front view of the multifunctional combined dehydration and squeezing machine of the present invention; Figure 2 for Figure 1 Enlarged view on the right end; Figure 3 for Figure 1 An enlarged view of the middle rotating drum seat; Figure 4 for Figure 1 An enlarged view of the middle support wheel; Figure 5 for Figure 1 Left view of; Figure 6 for Figure 1 Stereoscopic image of Figure 7 for Figure 1 A three-dimensional cross-sectional view of Reference numerals: 1. Feed hopper; 2. Rotating drum seat; 2a. Large gear; 2b. Skeleton oil seal; 3. Fixed feed pipe; 3a. Annular feed channel; 3b. Feed seal seat; 3c. Feed seal; 4. Intermediate bearing seat; 5. Intermediate bearing; 6. Drain pipe; 6a. Drain connector; 7. Packing seal structure: 7a. Annular seat plate; 7b. Sealing seat; 7c. Packing; 7d. Sealing pressure ring; 8. Drum screen; 9. Drum inner retaining ring; 10. Support drum; 11. Support wheel assembly: 11a. Support wheel frame; 11b. Support wheel shaft; 11c. Roller support wheel; 11d. Sliding bearing; 11e. Jackscrew; 11f. Oiling nozzle; 11g. Ruler; 12. Drum motor; 13. Drum reduction gearbox; 14. Pinion; 14a. Pinion shaft; 15. Pinion bearing seat; 16. Pre-dehydration box; 16a. Cleaning access port; 16b. Spray pipe; 16c. Nozzle; 16d. Pre-dehydration water hopper; 17. Squeeze section housing; 17a. Squeeze section water hopper; 18. Squeeze inlet seat; 19. Conical screen frame; 20. Squeeze motor; 21. Squeeze reduction gearbox; 22. Coupling; 23. Extrusion rotor; 23a. Squeeze rotor shaft; 23b. Spiral blade; 24. Squeeze-out rotor bearing seat; 25. Inlet end bracket; 26. Discharge end box; 26a. Material outlet; 27. Base. DETAILED DESCRIPTION

[0027] In the following description of the present invention, the terms "up", "down", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device must have a specific direction.

[0028] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific figures. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention.

[0030] like Figures 1 to 7 As shown, the multifunctional combined dehydration and squeezing machine of the present invention includes a pre-dehydration box 16, a squeezing section box 17 and a discharge end box 26. The pre-dehydration box 16 is connected to the inlet end of the squeezing section box 17, and the discharge end box 26 is connected to the outlet end of the squeezing section box 17. The bottoms of the pre-dehydration box 16 and the discharge end box 26 are respectively supported on a base 27, and a material outlet 26a is provided at the bottom of the discharge end box 26.

[0031] The interior of the dehydration section housing 17 houses a conical screen frame 19. Its inlet is fixedly connected to an extrusion inlet seat 18, which is annular and embedded in the sidewall of the pre-dehydration housing 16. The diameter of the conical screen frame 19's outlet is smaller than its inlet. Inside, a coaxial extrusion rotor 23 is located. This hollow rotor is wrapped with spiral blades 23b. The height of the spiral blades 23b at the inlet is greater than that at the extrusion end, and the outer edges of the spiral blades 23b abut against the inner wall of the conical screen frame 19. As the extrusion rotor 23 rotates, the spiral blades 23b push the material toward the extrusion end. As the material approaches the extrusion end, the space between the conical screen frame 19 and the extrusion rotor 23 decreases, squeezing the material. The pressure on the material increases continuously during transport, and this gradually increasing pressure forces moisture out of the material, which is then discharged through the gaps in the conical screen frame 19. During the extrusion and conveying process, the material is continuously flipped by spiral blades 23b, causing the material on the inside to flip to the outside. This allows the material originally on the outside to be squeezed and dehydrated from the screen frame. This ensures that both the inside and outside materials are fully squeezed, improving the material dehydration rate. The squeezed material falls from the extrusion end of the conical screen frame 19 and is discharged through the material outlet 26a at the bottom of the discharge end box 26. The squeezed water falls into the squeeze section water hopper 17a at the bottom of the squeeze section box 17 and is discharged.

[0032] Both ends of the extrusion rotor 23 are closed and are respectively connected to the squeeze rotor shaft 23a. The middle part of the squeeze rotor shaft 23a at the outlet end is supported on the outer wall of the discharge end box 26 through the squeeze rotor bearing seat 24. The outer end of the squeeze rotor shaft 23a at the outlet end is connected to the output shaft of the extrusion reduction box 21 through the coupling 22. The input end of the extrusion reduction box 21 is driven by the extrusion motor 20; the bottom of the extrusion motor 20 and the extrusion reduction box 21 are respectively fixed to the discharge end of the base 27.

[0033] The inlet end of the extrusion rotor 23 extends through the center hole of the extrusion inlet seat 18 to the inner cavity of the pre-dehydration box 16, and the spiral blades 23b wrapped around the periphery also extend into the inner cavity of the pre-dehydration box 16, which is used to transport the material in the pre-dehydration box 16 to the inner cavity of the conical screen frame 19. The squeeze rotor shaft 23a at the inlet end of the extrusion rotor 23 passes through the center of the outer side wall of the pre-dehydration box 16, and the outer end is supported on the inlet end bracket 25 through the squeeze rotor bearing seat 24. The bottom of the inlet end bracket 25 is supported on the feed end of the base 27.

[0034] The inner cavity of the pre-dehydration box 16 is provided with a drum screen 8, which is located at the outer periphery of the inlet end of the extrusion rotor 23 and is coaxial with the extrusion rotor 23. A plurality of sieve holes are evenly distributed on the circumference of the drum screen 8 for drainage. The bottom of the pre-dehydration box 16 is provided with a pre-dehydration water hopper 16d for collecting the drainage of the drum screen 8.

[0035] Flanges are welded to both ends of the drum screen 8. The outlet flange of the drum screen 8 is connected to the drum inner retaining ring 9. The drum inner retaining ring 9 includes a reduced diameter section and a bell mouth that connects to the outlet of the drum screen 8. The outer periphery of the drum screen 8 and the drum inner retaining ring 9 is welded with multiple axially extending and evenly distributed reinforcing ribs to improve strength. The outer periphery of the reinforcing ribs of the reduced diameter section of the drum inner retaining ring 9 is covered with a support roller 10 as a drum track.

[0036] The outlet end of the inner retaining ring 9 of the drum is embedded in the groove of the extrusion inlet seat 18, leaving a gap between them to form a labyrinth seal, and the water seeping from the gap is discharged into the pre-dehydration water hopper 16d below.

[0037] The outer periphery of the support drum 10 is provided with three support wheel assemblies 11 resting against the outlet end of its outer wall. The three groups of support wheel assemblies 11 are distributed in an equilateral triangle to support the inner end of the drum screen 8. Each support wheel assembly 11 includes a support wheel frame 11a, a supporting wheel shaft 11b and a drum support wheel 11c. The drum support wheel 11c is located in the support wheel frame 11a. The support wheel frame 11a is a square shape that is transparent from top to bottom. The root of the support wheel frame 11a is fixed to the inner wall of the pre-dehydration box 16.

[0038] The center hole of the roller support wheel 11c is supported in the middle of the roller shaft 11b via a sliding bearing 11d. A grease nipple 11f is screwed onto the outer end surface of the roller shaft 11b, and the sliding bearing 11d is lubricated via the grease nipple 11f and the built-in oil hole of the roller shaft 11b. The bottom of each end of the roller shaft 11b is provided with a cutting surface, and each extends through a corresponding guide slot in the support wheel frame 11a. The two guide slots extend vertically and directly match the roller shaft 11b, allowing the roller shaft 11b to float only up and down. Frame lugs are welded to the bottom of the two outer walls of the support wheel frame 11a, and a top shaft screw 11e is screwed onto each frame lug. The upper ends of the two top shaft screws 11e rest against the cutting surface at the bottom of the outer end of the roller shaft 11b.

[0039] By screwing in or out the top screw 11e, the top screw 11e pushes the roller shaft 11b up and down to adjust the height of the roller support wheels 11c, so that all three roller support wheels 11c are close to the roller track and the support roller 10 is coaxial with the extrusion rotor 23. A ruler 11g is fixed to one side of the guide slot to facilitate observing or measuring the height of the roller shaft 11b.

[0040] The inlet end of the drum screen 8 is connected to a rotating drum seat 2 coaxial with it, and the two are fixed to each other by flanges and bolts. The rotating drum seat 2 is located on the outside of the pre-dehydration box 16, and the outer edge of the outlet end flange of the rotating drum seat 2 is embedded in the center hole of the inlet end side wall of the pre-dehydration box 16 and is sealed with each other by a skeleton oil seal 2b.

[0041] Two sets of support wheel assemblies 11 are symmetrically positioned below the outlet end of the rotating drum base 2. As previously mentioned, their heights can be precisely adjusted. The bases of the two support wheel frames 11a are screwed to the outer wall of the inlet end of the pre-dehydration tank 16. The rotating drum base 2, drum screen 8, drum inner retaining ring 9, and support drum 10 are fixedly connected to form the entire centrifugal dehydration system, and are stably supported at both ends by a total of five drum support wheels 11c.

[0042] The outer diameter of the inlet end of the rotating drum base 2 is smaller than that of the outlet end, and a large gear 2a is fixed to the outer periphery of the inlet end. A small gear 14 meshes with the bottom of the large gear 2a. The small gear 14 is fixed to the middle of the small gear shaft 14a. The two ends of the small gear shaft 14a are supported in the small gear bearing seats 15. The bottoms of the two small gear bearing seats 15 are fixed to the base 27 through brackets. One end of the small gear shaft 14a is connected to the output shaft of the drum reduction box 13 through a coupling. The drum reduction box 13 is fixed to the base 27 and passes through the hole at the bottom of the inlet end bracket 25. The input end of the drum reduction box 13 is driven by the drum motor 12.

[0043] The inner cavity of the rotating drum base 2 is provided with a coaxial fixed feed pipe 3. The outlet end of the fixed feed pipe 3 passes through the center hole of the end plate at the outlet end of the rotating drum base 2, connecting the outlet of the fixed feed pipe 3 with the inner cavity space of the drum screen 8. The squeeze rotor shaft 23a at the inlet end of the extrusion rotor 23 passes through the fixed feed pipe 3, and an annular feed channel 3a is formed between the squeeze rotor shaft 23a and the fixed feed pipe 3. The outer side of the rotating drum base 2 is provided with a feed hopper 1. The feed hopper 1 is fixed to an external steel beam or connection port. The chute outlet at the lower end of the feed hopper 1 is inserted into the inlet end of the fixed feed pipe 3 and is welded to each other.

[0044] The inlet end of the fixed feed pipe 3 is provided with a feed sealing seat 3b to seal it, and the inner periphery of the feed sealing seat 3b is embedded with a feed sealing member 3c to achieve sealing with the squeeze rotor shaft 23a.

[0045] Material, such as starch, flows from feed hopper 1 into annular feed channel 3a and into the inner cavity of drum screen 8. Drum motor 12 drives pinion shaft 14a and pinion 14 through drum reduction gearbox 13. Pinion 14 drives gear 2a, which in turn drives rotating drum base 2, drum screen 8, drum inner retaining ring 9, and support drum 10 in synchronous rotation. The centrifugal force of rotation causes a large amount of free water in the newly fed starch to rapidly pass through drum screen 8 and be dehydrated, falling into pre-dehydration hopper 16d for discharge. The dehydrated material is then fed by spiral blades 23b of extrusion rotor 23 into the inner cavity of conical screen frame 19, where a small amount of free water and bound water is further squeezed out.

[0046] An intermediate bearing 5 is installed on the outer wall of the discharge end of the fixed feed pipe 3. This bearing is mounted in an intermediate bearing seat 4 and features sealing rings at each end, forming a primary seal. The inner end face of the intermediate bearing seat 4 is fixedly connected to the outlet end plate of the rotating drum seat 2. An annular tenon is provided on the end face of the intermediate bearing seat 4, which engages with an annular groove in the center of the outlet end plate of the rotating drum seat 2 for precise positioning. The intermediate bearing 5 stabilizes the fixed feed pipe 3, supporting both ends while also providing auxiliary support for the rotating drum seat 2. The outer ring of the bearing rotates with the rotating drum seat 2.

[0047] At least two radially extending bearing seat drain ports are symmetrically provided on one side of the intermediate bearing seat 4, near the pre-dehydration housing 16. The outer ends of these drain ports are connected to drain holes on the inner wall of the rotating drum seat 2 via drain pipes 6 and drain connectors 6a. The drain port outlets of the rotating drum seat 2 communicate with the space outside the drum screen 8 in the pre-dehydration housing 16. This allows any very small amount of material and water that flows toward the intermediate bearing 5 to be prematurely drained through the drain pipes 6, back to the outside of the drum screen 8, and then into the pre-dehydration water hopper 16d for recovery. This protects the intermediate bearing 5 and extends its service life.

[0048] A packing seal 7 is installed between the inner cavity entrance of the rotating drum seat 2 and the outer wall of the fixed feed pipe 3, forming a secondary seal. This packing seal 7 comprises an annular seat plate 7a, a sealing seat 7b, and a sealing pressure ring 7d. The outer edge of the annular seat plate 7a is fixed to the inner step of the rotating drum seat 2 via screws. The outer periphery of the sealing seat 7b is fixed to the center hole of the annular seat plate 7a and fits over the outer periphery of the fixed feed pipe 3. The inner end, or bottom, of the sealing seat 7b bends toward the outer wall of the fixed feed pipe 3 to form a clearance fit. A stuffing box is formed between the cylindrical body of the sealing seat 7b and the outer wall of the fixed feed pipe 3. This stuffing box is filled with packing 7c, such as graphite packing or other sealing components. The sealing pressure ring 7d is inserted into the outer end of the sealing seat 7b to compress the packing 7c, primarily to seal out fiber dust. The outer end of the sealing pressure ring 7d is provided with an outwardly bent flange, which is connected to the annular seat plate 7a via multiple screws, allowing for adjustable pressure on the packing 7c.

[0049] The drum screen 8 is prone to clogging after prolonged operation. Therefore, a spray pipe 16b is provided at the upper portion of the inner cavity of the pre-dehydration housing 16. The outer end of the spray pipe 16b is provided with a spray pipe flange or connector. Multiple nozzles 16c are distributed on the spray pipe 16b, and the spray angle of each nozzle 16c is adjustable. When the drum screen 8 requires cleaning or to eliminate clogging of the mesh after prolonged use, water can be supplied via an external water pipe connected to the spray pipe flange. Water flows through the spray pipe 16b and is sprayed out from each nozzle 16c, automatically spraying and cleaning the drum screen 8, ensuring that the mesh is unobstructed and does not affect drainage. A cleaning access port 16a is provided at the top of the pre-dehydration housing 16 for easy access and manual cleaning of the interior for extended periods.

[0050] The above description is only a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention, but does not limit the scope of patent protection of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. In addition to the above embodiments, the present invention may have other implementation modes without departing from the spirit and scope of the present invention. The present invention may also have various changes and improvements, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the attached claims and their equivalents. Technical features not described in the present invention can be achieved by or using existing technologies, and will not be described here.

Claims

1. A multifunctional combined dehydration and squeezing machine, comprising a base (27), a squeezing section box (17) being installed in the middle of the base (27), a discharge end box (26) being provided at the outlet end of the squeezing section box (17), a material outlet (26a) being provided at the bottom of the discharge end box (26), characterized in that: The squeezing section box (17) is provided with a screw extrusion device, the inlet end of the squeezing section box (17) is connected to the pre-dehydration box (16), the pre-dehydration box (16) is provided with a rotary dehydration device, and the bottom of the pre-dehydration box (16) is provided with a pre-dehydration water hopper (16d).

2. The multifunctional combined dehydration and squeezing machine according to claim 1, characterized in that: The screw extrusion device comprises: A conical screen frame (19) is fixed in the squeeze section box (17) and has an inlet diameter larger than an outlet diameter; The extrusion rotor (23) is located in the inner cavity of the conical screen frame (19), has a hollow structure and is surrounded by a spiral blade (23b) for pushing the material toward the outlet end, and the outer edge of the spiral blade (23b) is in contact with the inner wall of the conical screen frame (19); The extrusion drive mechanism comprises an extrusion motor (20), an extrusion reduction box (21) and a coupling (22). After the output shaft of the extrusion motor (20) is decelerated by the extrusion reduction box (21), the extrusion rotor (23) is driven to rotate through the coupling (22), so that the material is gradually compressed and dehydrated between the conical screen frame (19) and the spiral blades (23b).

3. The multifunctional combined dehydration and squeezing machine according to claim 2, characterized in that: The rotary dehydration device comprises: A drum screen (8) is rotatably disposed in the pre-dehydration box (16) and has a plurality of screen holes, and the extrusion rotor (23) coaxially extends to the inner cavity of the drum screen (8); A rotating drum seat (2) is coaxially fixed with the drum screen (8) and extends out of the feed end of the pre-dehydration box (16); The drum driving mechanism comprises a drum motor (12), a drum reduction box (13), a pinion (14) and a large gear (2a) fixedly connected to the rotating drum seat (2). The output shaft of the drum motor (12) is decelerated by the drum reduction box (13), and then drives the large gear (2a) to rotate through the pinion (14). The large gear (2a) drives the rotating drum seat (2) and the drum screen (8) to rotate, thereby pre-removing free water from the material through centrifugal force.

4. The multifunctional combined dehydration and squeezing machine according to claim 1, characterized in that: The inner cavity of the rotating drum seat (2) is coaxially provided with a fixed feed pipe (3), the inlet end of which is connected to the chute of the feed hopper (1), and the outlet end of which is connected to the inner cavity space of the drum screen (8).

5. The multifunctional combined dehydration and squeezing machine according to claim 4, characterized in that: The squeeze rotor shaft (23a) at the outlet end of the squeeze rotor (23) is supported on the side wall of the discharge end box (26) through the squeeze rotor bearing seat (24); the squeeze rotor shaft (23a) at the inlet end of the squeeze rotor (23) passes through the fixed feed pipe (3) and is supported on the inlet end bracket (25) through the squeeze rotor bearing seat (24), so that the squeeze rotor (23) and the drum screen (8) rotate independently of each other.

6. The multifunctional combined dehydration and squeezing machine according to claim 5, characterized in that: The annular feed channel (3a) is formed by the annular gap between the fixed feed pipe (3) and the squeeze rotor shaft (23a) passing therethrough. The inlet end of the fixed feed pipe (3) is provided with a feed sealing seat (3b) and a feed sealing member (3c) to achieve a rotational seal with the squeeze rotor shaft (23a).

7. The multifunctional combined dehydration and squeezing machine according to claim 4, characterized in that: The discharge end of the fixed feed pipe (3) is supported in the intermediate bearing seat (4) through an intermediate bearing (5); the intermediate bearing seat (4) is fixed to the center of the end plate of the discharge end of the rotating drum seat (2), and the center positioning is achieved by the mutual engagement of the annular tenon and the annular groove.

8. The multifunctional combined dehydration and squeezing machine according to claim 7, characterized in that: Sealing rings are provided on both sides of the intermediate bearing (5), and radially penetrating bearing seat drain ports are symmetrically provided at one end of the intermediate bearing seat (4) close to the outlet of the fixed feed pipe (3). The bearing seat drain ports are connected to the peripheral space of the drum screen (8) in the pre-dehydration box (16) through a drain pipe (6) and a drain joint (6a), so that leaked liquid and materials are returned to the pre-dehydration water hopper (16d).

9. The multifunctional combined dehydration and squeezing machine according to claim 4, characterized in that: A packing seal structure (7) is provided between the rotating drum seat (2) and the feed end of the fixed feed pipe (3) to prevent the material and moisture from flowing back to the feed end; the packing seal structure (7) comprises: An annular seat plate (7a) is fixed to the rotating drum seat (2); A sealing seat (7b) is sleeved on the outer periphery of the fixed feed pipe (3) and fixedly connected to the annular seat plate (7a); Filler (7c), filled in the stuffing box between the sealing seat (7b) and the fixed feed pipe (3); The sealing pressure ring (7d) compresses the filler (7c) and is adjustably fixed to the annular seat plate (7a).

10. The multifunctional combined dehydration and squeezing machine according to claim 3, characterized in that: The outlet end of the drum screen (8) is connected to a drum inner retaining ring (9), and the outlet end of the drum inner retaining ring (9) is embedded in the groove of the extrusion inlet seat (18) to form a labyrinth seal to prevent liquid from entering the squeezing section box (17) from the pre-dehydration box (16); the extrusion inlet seat (18) is fixed to the inlet end of the conical screen frame (19).

11. The multifunctional combined dehydration and squeezing machine according to claim 10, characterized in that: The outer periphery of the inner retaining ring (9) of the drum is uniformly distributed with reinforcing ribs, and a supporting drum (10) is sleeved on the outer periphery of the reinforcing ribs. The supporting drum (10) is coaxial with the inner retaining ring (9) of the drum and serves as a drum track; the outer periphery of the supporting drum (10) symmetrically supports three supporting wheel assemblies (11).

12. The multifunctional combined dehydration and squeezing machine according to claim 11, characterized in that: The support wheel assembly (11) comprises a support wheel frame (11a), a supporting wheel shaft (11b), a roller support wheel (11c) and a top shaft screw (11e). The roller support wheel (11c) is mounted on the supporting wheel shaft (11b) via a sliding bearing (11d) and abuts against the support roller (10). The top shaft screw (11e) is adjustably arranged on the support wheel frame (11a) to raise and lower the supporting wheel shaft (11b), thereby keeping the roller screen (8) and the extrusion rotor (23) coaxial.

13. The multifunctional combined dehydration and squeezing machine according to claim 11, characterized in that: Two supporting wheel assemblies (11) are symmetrically supported on both sides of the bottom of the outlet end of the rotating drum seat (2).

14. The multifunctional combined dehydration and squeezing machine according to claim 3, characterized in that: A spray pipe (16b) is provided on the upper portion of the pre-dehydration box (16), and a plurality of nozzles (16c) with adjustable directions are provided on the spray pipe (16b) for online cleaning of the drum screen (8).

15. The multifunctional combined dehydration and squeezing machine according to claim 3, characterized in that: The top of the pre-dehydration box (16) is provided with a cleaning and maintenance port (16a), and the bottom of the squeezing section box (17) is provided with a squeezing section water hopper (17a).

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