Screw extrusion dehydration forming press machine

Abstract

The invention relates to the technical field of press machines, and particularly discloses a screw extrusion dehydration forming press machine which comprises a dehydration barrel and a feeding port communicated to the left side of the top face of the dehydration barrel, a rotating roller is rotationally installed in the dehydration barrel, an extrusion spiral plate is integrally arranged on the outer side of the rotating roller, and a forming discharging port is formed in the right end of the dehydration barrel; the heating piece is arranged in the rotating roller, and water channels are arranged between the rotating roller and the heating piece at intervals; and the outer ring plates are arranged on the outer side of the dewatering cylinder at equal intervals, inner ring plates with the same inner diameter as the dewatering cylinder are integrally fixed to the inner sides of the outer ring plates, and annular water filtering plates are installed in the inner ring plates in an embedded mode. According to the screw extrusion dehydration forming press machine, the synergistic effect of screw extrusion and heating is utilized, the dehydration efficiency is improved, adhesion is reduced, the screw extrusion dehydration forming press machine is matched with the negative pressure mechanism, the solid waste extrusion forming quality is guaranteed, the maintenance frequency can be reduced, and long-term use is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of press technology, and more particularly to the field of dehydration press technology, specifically a spiral extrusion dehydration molding press. Background Technology

[0002] The screw extrusion dewatering and molding press, also known as a screw press dewatering machine, is a device that achieves solid-liquid separation through mechanical extrusion. Its core function is to separate moisture from high-humidity materials (such as waste, food residue, industrial waste, etc.), reduce the moisture content of the materials, and facilitate subsequent processing. The application scenarios of the screw extrusion dewatering and molding press cover multiple fields such as environmental protection, food, agriculture, and industry. Its efficient dewatering and molding is a key step in resource utilization. Currently, solid waste dewatering mainly relies on the screw extrusion principle. The equipment typically includes a dewatering cylinder, rotating rollers, and a screw propeller. The material is fed into the inlet, and the rotation of the screw blades generates an extrusion action, causing the water to be discharged through the filter plate, while the solid part is output after being formed. For example, the patent with authorization announcement number CN114801289B proposes a dehydration device for pea starch production, including a double-layer support frame, an extrusion dehydration component, and a crushing component. The extrusion dehydration component includes a strip-shaped outer shell and a conical inner core. One end of the strip-shaped outer shell has a feed inlet, and the other end has a discharge outlet. A ring of spiral blades is formed on the conical inner core. A water filtration mechanism is provided below the strip-shaped outer shell. The water filtration mechanism includes a drainage pipe, which is connected to the strip-shaped outer shell and a mesh plate is provided at the connection. The crushing component includes a support tray, a scraper, and a drive mechanism. The end of the support tray away from the discharge outlet has a discharge outlet. The extrusion dehydration component of this device can dehydrate starch while conveying it through the action of the conical inner core, thereby improving the dehydration efficiency. The crushing component of this device can crush the starch that is in lumps after dehydration, so that the dehydrated starch is in a natural loose state.

[0003] For example, patent CN215095836U discloses a spiral extrusion dewatering device. Its technical solution includes an outer cylinder with a feed inlet on its upper side, a liquid outlet on its lower side, and a discharge outlet at one end. A screen cylinder is fixedly connected inside the outer cylinder, and a rotating shaft is rotatably connected inside the screen cylinder. A motor is fixedly connected to one end of the rotating shaft, and a dewatering spiral is fixedly connected to its circumference. The dewatering spiral includes an extrusion spiral and a compression spiral. The side of the extrusion spiral away from the rotating shaft and the side of the compression spiral away from the rotating shaft both abut against the inner circumference of the screen cylinder. The surface of the extrusion spiral is coated with a wear-resistant layer of elastic material. A discharge pipe is fixedly connected to the outer cylinder at the discharge outlet, and multiple spring steel discharge pressure plates are provided at one end of the discharge pipe, which has the advantage of improving the dewatering effect.

[0004] However, based on practical applications and analysis of other existing technologies, the current spiral dewatering machine still has certain shortcomings: 1. Low dehydration efficiency: Dehydration by simply relying on the screw mechanism cannot destroy the colloidal structure in solid waste materials, preventing the release of bound water. As a result, the dehydrated product still has a high moisture content and a long dehydration cycle. 2. Severe adhesion and wear of the equipment. During the dewatering process, solid waste adheres to the spiral plate, screen, cylinder structure, etc., which may not only cause blockage, but also accelerate the wear of the equipment and affect long-term stable use. 3. Insufficient structural strength: The internal filter plate structure is generally an integral design, which is prone to deformation or damage during long-term high-pressure extrusion dewatering operations, affecting dewatering efficiency and causing the solid waste to be loosely formed.

[0005] Therefore, we propose a spiral extrusion dehydration molding press to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a spiral extrusion dewatering molding press to solve the problems of low dewatering efficiency, frequent equipment maintenance, and unstable molding quality of current spiral extrusion dewatering molding presses mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a spiral extrusion dewatering molding press, comprising: a dewatering cylinder and a feed inlet connected to the left side of the top surface of the dewatering cylinder, wherein a rotating roller is rotatably installed inside the dewatering cylinder, an extrusion spiral plate is integrally provided on the outer side of the rotating roller, and a molding discharge port is provided at the right end of the dewatering cylinder; Also includes: A heating element is disposed inside the rotating roller, and water channels are provided between the rotating roller and the heating element at intervals. An outer ring plate is evenly spaced on the outside of the dewatering cylinder. An inner ring plate with the same inner diameter as the dewatering cylinder is integrally fixed on the inner side of the outer ring plate. The dewatering cylinder and the inner ring plate are integrated to form a dewatering extrusion channel. An annular filter plate is embedded in the inner ring plate. A vent pipe is connected to the top of the outer ring plate, and an air pump is provided at the far end of the vent pipe. The bottom end of the outer ring plate is connected to a water collection tank.

[0008] Furthermore, the outer diameter of the rotating roller gradually increases from left to right, while the pitch of the extrusion spiral plate gradually decreases from left to right, thereby enhancing the extrusion effect through the variable diameter and variable pitch design.

[0009] Furthermore, the end of the waterway is connected to a connecting pipe fixed to the top of the rotating roller for injecting heating medium.

[0010] Furthermore: the bottom end of the outer ring plate is connected to the water collection tank through a connection port, a water inlet plate is provided between the outer ring plate and the connection port, and a percolation plate for secondary filtration is provided on the top inner side of the water collection tank.

[0011] Furthermore, a water pump is fixedly installed on the outside of the water collection tank, and a drain pipe and a filter ball connected to the input end of the water pump are vertically arranged inside the water collection tank.

[0012] Furthermore, the annular filter plates are evenly spaced inside the inner ring plate, and the annular filter plates are arranged in an open ring shape to prevent water from splashing into the air pipe.

[0013] Furthermore: the top end of the vent pipe is connected to the air pump through a filter, the filter and the air pump are located on the outside of the dehydration cylinder, the vent pipe, the filter and the air pump are used to draw air from the outer ring plate to form a negative pressure system, the negative pressure system also includes a pressure gauge with exhaust installed at the right end of the dehydration cylinder.

[0014] Furthermore: a slide is provided above the percolation plate, an adjusting rod that is horizontally connected to the inside of the water collection tank is connected to the top center of the slide, slide rods are symmetrically inserted on both sides of the end of the slide, and a brush plate that contacts the percolation plate is provided at the bottom of the slide.

[0015] Furthermore, the brush plate is rotatably connected to the carriage via a hinge, and is used to guide and scrape the surface of the percolation plate.

[0016] Furthermore, a sedimentation chamber is integrally provided at the right end of the water collection tank, the top of the sedimentation chamber is connected to the space above the percolation plate, and a vertical filter plate for water percolation is arranged between the sedimentation chamber and the water collection tank.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: the spiral extrusion dewatering and molding press utilizes the synergistic effect of spiral extrusion and heating to improve dewatering efficiency and reduce adhesion, and with the help of a negative pressure mechanism, it ensures the quality of solid waste extrusion molding, reduces maintenance frequency, and ensures long-term use; 1. This solution includes a rotating roller, an extrusion spiral plate, and a heating element. By changing the diameter of the rotating roller and the pitch of the extrusion spiral plate, the waste is extruded and dehydrated. At the same time, the solid waste is heated by the heating element to release the bound water and achieve rapid dehydration. Meanwhile, the use of heating elements can reduce the stickiness of solid waste and reduce adhesion, thereby reducing equipment wear, reducing maintenance frequency, and ensuring long-term stable operation. 2. This solution includes an outer ring plate, an inner ring plate, and an annular filter plate. The outer and inner ring plates are segmented and spaced at equal intervals and are integrally installed on the outside of the dewatering cylinder. The outer and inner ring plates form a stable support, which can avoid the problem of low structural strength caused by using a filter plate as a whole. The annular filter plate is used to filter wastewater and achieve efficient separation. 3. This solution is equipped with a vent pipe, a filter and an air pump. The connection between the vent pipe and the outer ring plate reduces the air pressure during suction, accelerates the discharge of moisture, and reduces internal gas compression, which can prevent deformation of the compression channel and ensure that the solid waste is squeezed together and formed. 4. This solution is equipped with a slide, a brush plate, and a hinge. By sliding the slide and the brush plate on the surface of the percolation plate, the percolation plate can be automatically cleaned and fine water-containing impurities can be collected and precipitated, which is conducive to achieving continuous dewatering operation. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall rear structure of the present invention; Figure 3 This is a frontal sectional view of the entire invention; Figure 4 This is a schematic diagram showing the separation of the rotating roller, extrusion spiral plate, and heating element of the present invention; Figure 5 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 6 This is a cross-sectional view of the entire invention from the right side; Figure 7 This is a cross-sectional view of the inner side of the outer ring plate of the present invention; Figure 8 This is a schematic diagram of the overall overhead structure of the outer ring plate of the present invention; Figure 9 This is a schematic diagram showing the separation of the sedimentation tank and the water collection tank in this invention; Figure 10 This is a schematic diagram of the brush plate rotation of the present invention.

[0019] In the diagram: 1. Dewatering cylinder; 2. Feed inlet; 3. Rotary roller; 4. Extrusion spiral plate; 5. Transmission device; 6. Pressure gauge with exhaust; 7. Forming outlet; 8. Heating element; 9. Water channel; 10. Connecting pipe; 11. Outer ring plate; 12. Connection port; 13. Water collection tank; 14. Inner ring plate; 15. Annular filter plate; 16. Water inlet plate; 17. Vent pipe; 18. Filter; 19. Air pump; 20. Water pump; 21. Drain pipe; 22. Filter ball; 23. Percolation plate; 24. Slide frame; 25. Adjusting rod; 26. Slide rod; 27. Brush plate; 28. Hinge; 29. ​​Sedimentation tank; 30. Vertical filter plate. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Please see Figures 1-10 The present invention provides the following technical solution: A spiral extrusion dewatering molding press includes: a dewatering cylinder 1, a feed inlet 2, a rotating roller 3, an extrusion spiral plate 4, a transmission device 5, a pressure gauge with exhaust gas 6, a molding discharge outlet 7, a heating element 8, a water channel 9, a connecting pipe 10, an outer ring plate 11, a connection port 12, a water collection tank 13, an inner ring plate 14, an annular filter plate 15, a water inlet plate 16, a vent pipe 17, a filter 18, an air pump 19, a water pump 20, a drain pipe 21, a filter ball 22, a percolation plate 23, a slide 24, an adjusting rod 25, a sliding rod 26, a brush plate 27, a hinge 28, a sedimentation tank 29, and a vertical filter plate 30. Among them: such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6In the dewatering cylinder 1, a feed inlet 2 is connected to the left side of the top surface. A rotating roller 3 is mounted inside the dewatering cylinder 1. A transmission device 5 is installed on the outer side of the roller 3. An extrusion spiral plate 4 is integrally installed on the outer side of the roller 3. A forming discharge port 7 is located at the right end of the dewatering cylinder 1. A heating element 8 is located inside the roller 3. A water channel 9 is spaced between the roller 3 and the heating element 8. The outer diameter of the roller 3 gradually increases from left to right, while the pitch of the extrusion spiral plate 4 gradually decreases from left to right. The extrusion effect is enhanced through the variable diameter and variable pitch design. The end of 9 is connected to a connecting pipe 10 fixed to the top of the rotating roller 3 for injecting heating medium; the outer ring plate 11 is evenly spaced on the outside of the dewatering cylinder 1, and the inner ring plate 14 with the same inner diameter as the dewatering cylinder 1 is integrally fixed on the inner side of the outer ring plate 11. The dewatering cylinder 1 and the inner ring plate 14 are integrated to form a dewatering extrusion channel. An annular filter plate 15 is embedded in the inner ring plate 14. The air pipe 17 is connected to the top of the outer ring plate 11, and an air pump 19 is provided at the far end of the air pipe 17. The bottom end of the outer ring plate 11 is connected to a water collection tank 13.

[0022] In specific application scenarios, solid waste enters the dewatering cylinder 1 through the feed inlet 2, and is dewatered by the rotation of the rotating roller 3 and the extrusion spiral plate 4. The heating element 8 heats the medium inside the water channel 9, thereby heating the solid waste, which releases the bound water and improves the dewatering efficiency. Furthermore, the inner ring plate 14 is integrated with the dewatering cylinder 1, and the annular filter plate 15 automatically filters and discharges the water, facilitating rapid dewatering and collection. Air is drawn in by the air pump 19, which discharges the gas inside the dewatering cylinder 1 and creates negative pressure, which can accelerate the filtration of wastewater and reduce gas blockage. Moreover, the outer ring plate 11 is used in sections with equal spacing to avoid deformation and ensure the density of the solid waste extrusion molding.

[0023] The above technical solution is adopted: the extrusion spiral plate 4 and the heating element 8 work together to improve the dewatering efficiency and reduce solid waste adhesion; secondly, the air pump 19 is connected through the air pipe 17 to form a negative pressure system to ensure the molding quality and avoid deformation; the automatic filtration design of the annular filter plate 15 reduces maintenance needs and is environmentally friendly and energy-saving.

[0024] Among them: such as Figure 3 , Figure 6 , Figure 7 and Figure 8 In the middle, the bottom end of the outer ring plate 11 is connected to the water collection tank 13 through the connection port 12, the annular filter plate 15 is evenly spaced inside the inner ring plate 14, the water inlet plate 16 is provided between the outer ring plate 11 and the connection port 12, and the inner top of the water collection tank 13 is provided with a percolation plate 23 for secondary filtration.

[0025] In specific application scenarios, the outer ring plate 11, inner ring plate 14, and dewatering cylinder 1 are integrated into a single unit, so that the inner ring plate 14 and the dewatering cylinder 1 are smoothly connected to form a squeezing channel. The annular filter plates 15 are set at equal intervals inside the inner ring plate 14, which can ensure the overall structural strength while filtering water and avoid structural deformation. After the filtered wastewater enters the water collection tank 13, it can be filtered again through the permeate plate 23 for easy centralized discharge.

[0026] The above technical solution constitutes a multi-level dehydration auxiliary structure, which avoids water retention and blockage, and ensures rapid dehydration.

[0027] Among them: such as Figure 1 and Figure 6 In the middle, a water pump 20 is fixedly installed on the outside of the water collection tank 13, and a drain pipe 21 and a filter ball 22 connected to the input end of the water pump 20 are vertically arranged inside the water collection tank 13.

[0028] In specific application scenarios, the water pump 20, drain pipe 21 and filter ball 22 are connected to the inside of the water collection tank 13 to facilitate the rapid centralized discharge of wastewater.

[0029] Among them: such as Figure 2 , Figure 6 and Figure 7 In the middle, the annular filter plate 15 is arranged in an open ring shape to prevent water from splashing into the air pipe 17. The top of the air pipe 17 is connected to the air pump 19 through the filter 18. The filter 18 and the air pump 19 are arranged on the outside of the dehydration cylinder 1. The air pipe 17, the filter 18 and the air pump 19 are used to draw air from the outer ring plate 11 to form a negative pressure system. The negative pressure system also includes a pressure gauge 6 with exhaust installed at the right end of the dehydration cylinder 1.

[0030] In specific application scenarios, the connection between the air pump 19, filter 18, vent pipe 17 and outer ring plate 11 allows for air intake, which discharges the gas inside the compression channel and creates negative pressure. This accelerates wastewater filtration, reduces gas bubbles in solid waste, increases the density of solid waste, and ensures its formation. The pressure can be monitored by the pressure gauge 6 with exhaust, and exhaust can be used to vent the right end of the dewatering cylinder 1 to prevent local high pressure caused by the solid waste being sealed. The top of the annular filter plate 15 has a notch to prevent water from splashing into the vent pipe 17 during filtration, thus avoiding affecting gas intake.

[0031] The above technical solution solves the problems of air pressure imbalance and moisture residue in traditional equipment, and also improves dehydration efficiency and molding quality through integrated layout.

[0032] Among them: such as Figure 3 , Figure 6 , Figure 9 and Figure 10In the middle of the percolation plate 23, a slide 24 is provided above the percolation plate 23. An adjusting rod 25 is connected to the middle of the top of the slide 24 and is horizontally connected to the inside of the water collection tank 13. Slide rods 26 are symmetrically inserted on both sides of the end of the slide 24. A brush plate 27 is provided at the bottom of the slide 24 and is in contact with the percolation plate 23. The brush plate 27 is rotatably connected to the slide 24 through a hinge 28 and is used to guide and scrape the surface of the percolation plate 23. A sedimentation chamber 29 is integrally provided at the right end of the water collection tank 13. The top of the sedimentation chamber 29 is connected to the space above the percolation plate 23. A vertical filter plate 30 for water percolation is arranged between the sedimentation chamber 29 and the water collection tank 13.

[0033] In specific application scenarios, the rotation of the adjusting rod 25 can drive the slide 24 to slide left and right. The hinge 28 connects the brush plate 27 to the slide 24, ensuring that the slide 24 can scrape the percolation plate 23 when it slides to the right, so that impurities on the surface of the percolation plate 23 can enter the sedimentation chamber 29 for sedimentation and be filtered by the vertical filter plate 30.

[0034] The above technical solution can automatically clean the percolation plate 23, settle impurities, and filter water again, ensuring continuous operation and complete dewatering.

[0035] Example: When using this spiral dewatering forming extrusion press to dewater solid waste, the solid waste is fed into the left end of the dewatering cylinder 1 through the top opening of the feed inlet 2. By starting the transmission device 5, the transmission between the belts drives the rotating roller 3 to roll inside the dewatering cylinder 1, and simultaneously drives the integrally set extrusion spiral plate 4 on the outside of the rotating roller 3 to roll. The extrusion spiral plate 4 pushes the solid waste to the right between the rotating roller 3 and the dewatering cylinder 1. Since the outer diameter of the rotating roller 3 gradually increases from left to right, and the pitch of the extrusion spiral plate 4 gradually decreases from left to right, the solid waste is squeezed, and the solid waste material is compressed to squeeze the internal moisture outward. While the solid waste is being squeezed, an outer ring plate 11 and an inner ring plate 14 are provided on the outside of the dewatering cylinder 1. The inner diameter of the inner ring plate 14 is the same as that of the dewatering cylinder 1, and they are integrated to form a smooth solid waste squeezing channel. An annular filter plate 15 is embedded inside the inner ring plate 14. When the water-containing solid waste enters the dewatering cylinder 1 and is squeezed, the water inside enters between the outer ring plate 11 and the inner ring plate 14 through the annular filter plate 15. The water is then discharged into the water collection tank 13 through the connection between the bottom of the outer ring plate 11 and the connection port 12. Meanwhile, a heating element 8 is integrally installed inside the rotating roller 3. The end of the heating element 8 is electrically connected through a conductive slip ring. A water channel 9 is provided between the rotating roller 3 and the heating element 8. The heating medium can be input into or discharged into the water channel 9 through the connecting pipe 10. The heating element 8 heats the heating medium, which can heat the solid waste inside the dewatering cylinder 1. This not only reduces the viscosity of the solid waste and reduces the adhesion between the solid waste and the dewatering cylinder 1, rotating roller 3, extrusion spiral plate 4, inner ring plate 14 and annular filter plate 15, but also breaks down the colloidal structure in the solid waste through heating, releasing the bound water and thus increasing the dewatering efficiency. During dehydration, the air pump 19, filter 18, air pipe 17 and outer ring plate 11 are connected in sequence. After the air pump 19 is started, air is drawn in through the connection. Through the connection between the outer ring plate 11 and the dehydration cylinder 1, the air inside the dehydration cylinder 1 is drawn out. This can prevent the deformation of the extrusion channel due to the increased air pressure during extrusion. At the same time, reducing the internal gas can ensure the solid waste is formed. Furthermore, the exhaust of gas creates a negative pressure inside the outer ring plate 11, the connection port 12 and the water collection tank 13. Under the combined action of negative pressure and heating, the water can be filtered out more quickly, further improving the dehydration efficiency. The annular filter plate 15 embedded in the inner wall of the inner ring plate 14 is an open ring shape, which can prevent water from splashing into the interior of the vent pipe 17 due to pressure when it is discharged into the outer ring plate 11 through the annular filter plate 15, thus reducing the working pressure of the filter 18. After being squeezed and dehydrated, the solid waste enters the right end of the dehydration cylinder 1. It is squeezed by the continuous rotation of the rotating roller 3 and the extrusion spiral plate 4, so that the solid waste is squeezed out through the forming discharge port 7 and discharged. The water squeezed out enters the water collection tank 13 through the connection between the water inlet plate 16 at the bottom of the outer ring plate 11 and the connection port 12. The water is filtered by the permeation plate 23 set at the top of the water collection tank 13. The filtered water enters the bottom of the water collection tank 13. When the water pump 20 is started, the water inside the water collection tank 13 can be discharged by connecting the water pump 20 input end with the drain pipe 21 and the filter ball 22. A slide 24 is provided above the percolation plate 23. The adjustment rod 25 is driven by a motor to rotate, which can drive the slide 24 to slide left and right along the adjustment rod 25 and the slide rod 26. The bottom of the slide 24 is rotatably installed with the brush plate 27 through the hinge 28. When the slide 24 slides to the right, the bottom end of the brush plate 27 contacts the top surface of the percolation plate 23 to brush. The top surface of the brush plate 27 is kept in contact with the bottom surface of the slide 24 by the reaction force, thereby ensuring that the impurities on the surface of the percolation plate 23 are scraped into the sedimentation chamber 29 provided at the right end of the water collection tank 13. When the slide 24 slides to the left, the bottom of the brush plate 27 rubs against the percolation plate 23, causing the brush plate 27 to rotate outward at the bottom of the slide 24, so that the brush plate 27 does not brush the surface of the percolation plate 23, thus preventing impurities from accumulating on the left side of the percolation plate 23. Impurities entering the sedimentation chamber 29 are automatically settled by gravity, and the water content inside can be filtered by the vertical filter plate 30 and then discharged into the water collection tank 13.

[0036] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention; the contents not described in detail in this specification belong to the prior art known to those skilled in the art; in addition, the directional terms such as up, down, left, right, front, and back in the text only represent their relative positions and not absolute positions.

[0037] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A screw extrusion dewatering molding press, comprising: The dewatering cylinder (1) and the feed inlet (2) connected to the left side of the top surface of the dewatering cylinder (1) are provided. A rotating roller (3) is rotatably installed inside the dewatering cylinder (1). An extrusion spiral plate (4) is integrally provided on the outer side of the rotating roller (3). A forming discharge port (7) is provided at the right end of the dewatering cylinder (1). Its characteristic is that it further includes: A heating element (8) is disposed inside a rotating roller (3), and a water channel (9) is provided between the rotating roller (3) and the heating element (8). An outer ring plate (11) is provided at equal intervals on the outside of the dewatering cylinder (1). An inner ring plate (14) with the same inner diameter as the dewatering cylinder (1) is integrally fixed on the inner side of the outer ring plate (11). The dewatering cylinder (1) and the inner ring plate (14) are combined to form a dewatering extrusion channel. An annular filter plate (15) is embedded inside the inner ring plate (14). Ventilation pipe (17) is connected to the top of the outer ring plate (11), and an air pump (19) is provided at the far end of the ventilation pipe (17). The bottom end of the outer ring plate (11) is connected to a water collection tank (13).

2. The spiral extrusion dehydration molding press according to claim 1, characterized in that: The outer diameter of the roller (3) gradually increases from left to right, and the pitch of the extrusion spiral plate (4) gradually decreases from left to right. The extrusion effect is enhanced by the variable diameter and variable pitch design.

3. The spiral extrusion dehydration molding press according to claim 1, characterized in that: The end of the waterway (9) is connected to a connecting pipe (10) fixed to the top of the roller (3) for injecting heating medium.

4. The spiral extrusion dehydration molding press according to claim 1, characterized in that: The bottom end of the outer ring plate (11) is connected to the water collection tank (13) through the connection port (12). A water inlet plate (16) is provided between the outer ring plate (11) and the connection port (12). A permeation plate (23) for secondary filtration is provided on the top inner side of the water collection tank (13).

5. The spiral extrusion dehydration molding press according to claim 1, characterized in that: A water pump (20) is fixedly installed on the outside of the water collection tank (13), and a drain pipe (21) and a filter ball (22) connected to the input end of the water pump (20) are vertically arranged inside the water collection tank (13).

6. The spiral extrusion dehydration molding press according to claim 1, characterized in that: The annular filter plate (15) is arranged at equal intervals inside the inner ring plate (14). The annular filter plate (15) is arranged in an open ring shape to prevent water from splashing into the air pipe (17).

7. The spiral extrusion dehydration molding press according to claim 1, characterized in that: The top end of the vent pipe (17) is connected to the air pump (19) through the filter (18). The filter (18) and the air pump (19) are located on the outside of the dehydration cylinder (1). The vent pipe (17), the filter (18) and the air pump (19) are used to draw air from the outer ring plate (11) to form a negative pressure system. The negative pressure system also includes a pressure gauge (6) with exhaust installed at the right end of the dehydration cylinder (1).

8. A spiral extrusion dehydration molding press according to claim 4, characterized in that: A slide (24) is provided above the percolation plate (23). An adjusting rod (25) that is horizontally connected inside the water collection tank (13) is connected to the middle of the top of the slide (24). Slide rods (26) are symmetrically inserted on both sides of the end of the slide (24). A brush plate (27) that contacts the percolation plate (23) is provided at the bottom of the slide (24).

9. A spiral extrusion dehydration molding press according to claim 8, characterized in that: The brush plate (27) is rotatably connected to the carriage (24) via a hinge (28) and is used to guide and scrape the surface of the percolation plate (23).

10. A spiral extrusion dehydration molding press according to claim 9, characterized in that: A sedimentation chamber (29) is integrally provided at the right end of the water collection tank (13). The top of the sedimentation chamber (29) is connected to the space above the percolation plate (23). A vertical filter plate (30) for water percolation is arranged between the sedimentation chamber (29) and the water collection tank (13).

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