Self-adapting constant speed discharging screw extruder

Abstract

The application discloses a self-adaptive constant-speed discharging screw extruder, and belongs to the technical field of sludge treatment. The self-adaptive constant-speed discharging screw extruder comprises a driving mechanism and a mounting platform, the driving mechanism is connected with an extrusion screw through a transmission mechanism, a mixing chamber, a uniform chamber and an agglomeration chamber are arranged outside the extrusion screw, a liquid discharge assembly is mounted on the outer wall of the uniform chamber, two symmetrically-arranged supplementary pipes are arranged in the liquid discharge assembly, and filter covers are fixed to the inner walls of the upper and lower ends of the supplementary pipes. The self-adaptive constant-speed discharging screw extruder can actively remove the thin sludge mixture with low solid content above the meshing area through the arrangement of the supplementary pipes and the suction plate, the total amount of liquid needing to enter the high-pressure section is reduced, the load of the subsequent extrusion section is reduced, the extrusion of solid substances can be more focused, the solid content of the final sludge cake and the processing capacity of the equipment are improved, the upper free treatment agent liquid is selected before extrusion dewatering, the utilization rate of the treatment agent is improved, and the operation cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, and in particular to an adaptive uniform discharge screw extruder. Background Technology

[0002] In the field of mechanical sludge dewatering, twin-screw extruders achieve solid-liquid separation through screw extrusion and shearing. However, under traditional operating conditions, as the extrusion process continues, a flow field with extremely uneven solid-liquid distribution naturally forms within the machine cavity: above the screw meshing zone, the sludge is in a thin fluid state; while below the meshing zone and in the outlet area, the sludge is highly compressed, forming a dense, hardened solid layer.

[0003] This inherent "sparse at the top and dense at the bottom" state means that the mixture rich in free water and chemicals at the top cannot effectively participate in subsequent pressing, instead increasing the load at the back end and wasting chemicals. At the same time, the slab layer at the bottom not only hinders the further discharge of filtrate, but its extremely poor fluidity also completely blocks the contact and mixing path between newly added chemicals and already compressed sludge. Therefore, traditional equipment is essentially a passive and static extrusion process. Its dewatering efficiency and chemical utilization rate will significantly decrease in the later stages of treatment due to the deterioration of the internal rheological properties of the material, ultimately restricting the further improvement of the overall dewatering effect. Based on this, an adaptive uniform discharge screw extruder is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing an adaptive uniform discharge screw extruder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An adaptive uniform discharge screw extruder includes a drive mechanism and an installation platform. The drive mechanism is connected to an extrusion screw via a transmission mechanism. The extrusion screw has a mixing chamber, a homogenizing chamber, and an agglomeration chamber on its outer side. A drain assembly is installed on the outer wall of the homogenizing chamber. Two symmetrically arranged replenishment pipes are installed inside the drain assembly. Filter covers are fixed to the inner walls of both the upper and lower ends of the replenishment pipes. A suction plate is installed inside the pipe of the upper replenishment pipe. A magnetic variable component is installed on one side of the suction plate. A one-way perforated plate is fixed inside the pipe of the lower replenishment pipe. A one-way component is installed on the inner wall of the one-way perforated plate. A drive rod is provided above the unidirectional perforated plate, and a pressure-bearing arc plate is provided above the drive rod. A spiral pressure blade is rotatably connected to the bottom end of the unidirectional perforated plate via a pin. A lower sealing seat is fixed at the bottom of the uniform chamber. A stepped groove is provided on the lower sealing seat, and a crushing component is provided in the stepped groove.

[0006] Preferably, the driving mechanism is fixed on the mounting platform, the transmission mechanism includes a gear transmission box and a reducer structure, a sludge feeding hopper is provided on the mixing chamber, the uniform chamber and the agglomeration chamber are arranged alternately, and an extrusion template is fixedly installed on the outermost uniform chamber.

[0007] Preferably, the drainage assembly includes a drainage hood fixed to the outer side wall of the uniform chamber, with sealing rings fixedly installed at both the front and rear ends of the drainage hood, and a booster pump box installed on the agglomeration chamber, the booster pump box containing the treatment agent.

[0008] Preferably, an upper sealing seat is fixed to the top of the uniform chamber, and the upper and lower ends of the replenishment tube are respectively connected to the upper sealing seat and the lower sealing seat. The replenishment tube has a perforated mesh at the suction assembly plate.

[0009] Preferably, the magnetic variable assembly includes an electromagnetic ring fixed to the outer wall of the supplementary tube, the outer wall of the electromagnetic ring is covered with a protective cover and electrically connected to an alternating power supply, the suction assembly plate is fixedly connected to a displacement magnetic plate by a fixing rod, a mesh plate is fixed to the inner wall of the supplementary tube, the suction assembly plate is slidably connected to the mesh plate by a fixing rod, and a return spring is sleeved on the outer wall of the fixing rod.

[0010] Preferably, the inner wall of the supplementary tube is rotatably connected to the pin shaft via a connecting plate, the outer wall of the pin shaft is fixedly connected to the spiral pressurizing blade, the top end of the pin shaft is provided with a threaded groove, the drive rod is connected to a pushing magnetic plate via a connecting rod, the outer wall of the pushing magnetic plate is fixed with a fixing button, and the fixing button is slidably connected to the threaded groove.

[0011] Preferably, the one-way component includes a perforated plate fixed inside a hole in a one-way perforated plate, a one-way rubber ball fixed to the perforated plate by a tension spring, a one-way bucket fixed to the hole in the one-way perforated plate, and the diameter of the one-way rubber ball being larger than the inner diameter of the top of the one-way bucket.

[0012] Preferably, a pry bar is fixed to the top of the one-way rubber ball by a pull rope, the pry bar is rotatably connected to a fixed cylinder by a steering seat, the fixed cylinder is fixed to the one-way perforated plate, and the other end of the pry bar is fixedly connected to a ring plate by a pull rope, the inner sidewall of the ring plate is connected to a connecting rod.

[0013] Preferably, the crushing assembly includes a push plate slidably disposed on the stepped groove of the lower sealing seat, the push plate is fixedly connected to a mud-breaking arc plate, the mud-breaking arc plate is fixed to a steering knob by a magnetic column, and a spiral groove that slides with the steering knob is provided in the lower sealing seat.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This solution, through the installation of supplementary pipes and suction plates, can actively remove the thin sludge mixture with low solids content above the meshing zone, reducing the total amount of liquid that needs to enter the high-pressure section, lowering the load on the subsequent extrusion section, allowing for greater focus on the extrusion of solids, improving the solids content of the final sludge cake and the equipment's processing capacity. It also selects out the upper free treatment agent liquid in the early stage of extrusion dewatering, improving agent utilization and reducing operating costs. The active suction creates more intense liquid flow, which helps to break down the sludge floc structure and release more internal water.

[0015] 2. This solution, through the setting of unidirectional components, can accurately and automatically reinject a portion of the liquid extracted from the upper layer when the sludge at the bottom layer is most severely compacted. This moistens the hardened sludge lumps, effectively preventing the sludge from over-drying and adhering to the filter screen or chamber wall, thus preventing blockage and ensuring continuous and stable operation of the equipment. The power driving the liquid reinjection comes directly from the squeezing pressure of the dense sludge below, without the need for additional external energy input. This achieves liquid redistribution and de-sticking within the system. The reinjected liquid promotes further contact between the dense sludge and the chemicals, improving the overall mixing uniformity of the sludge and the treatment chemicals, and enhancing the flocculation and dewatering effect.

[0016] 3. This solution, through the setting of the crushing component, can physically break the dense mud cake layer formed near the outlet by the reciprocating swinging mud-breaking arc plate set at the lower sealing seat, preventing the water filtration channel from being completely blocked. Breaking the caked layer provides a channel for the reinjected liquid and residual filtrate to seep down, ensuring that the liquid can penetrate evenly rather than accumulate locally, thereby ensuring the uniformity of the dewatering effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an adaptive uniform discharge screw extruder proposed in this invention; Figure 2 This is an overall assembly drawing of an adaptive uniform discharge screw extruder proposed in this invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram showing the positions of the uniform chamber and the agglomeration chamber in an adaptive uniform discharge screw extruder proposed in this invention; Figure 5 This is a schematic diagram of the internal structure of the uniform chamber in an adaptive uniform discharge screw extruder proposed in this invention; Figure 6 This is a schematic diagram of the liquid discharge assembly in an adaptive uniform discharge screw extruder proposed in this invention; Figure 7 This is an assembly diagram of the uniform chamber in an adaptive uniform discharge screw extruder proposed in this invention; Figure 8 This is a cross-sectional view of the supplementary tube in an adaptive uniform discharge screw extruder proposed in this invention; Figure 9 This is a schematic diagram of the position of the spiral pressure blade in an adaptive uniform discharge screw extruder proposed in this invention; Figure 10 This is an assembly diagram of the drive rod in an adaptive uniform discharge screw extruder proposed in this invention; Figure 11 This is a schematic diagram of the crushing component in an adaptive uniform discharge screw extruder proposed in this invention.

[0018] In the diagram: 1. Drive mechanism; 2. Mounting platform; 3. Sludge feeding hopper; 4. Extrusion screw; 5. Mixing chamber; 6. Homogenizing chamber; 7. Agglomeration chamber; 8. Booster pump box; 9. Drainage hood; 10. Sealing ring; 11. Alternating power supply; 12. Upper sealing seat; 13. Replenishment pipe; 14. Filter cover; 15. Suction assembly plate; 16. Displacement magnetic plate; 17. Electromagnetic ring; 18. Pressure-bearing arc plate; 19. Drive rod; 20. Ring plate; 21. Pushing magnetic plate; 22. Fixing button; 23. Pin shaft; 24. Spiral pressurizing blade; 25. One-way perforated plate; 26. One-way rubber ball; 27. One-way hopper; 28. Crowbar; 29. ​​Lower sealing seat; 30. Push plate; 31. Sludge breaking arc plate; 32. Magnetic column; 33. Directional button. Detailed Implementation

[0019] 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. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Example, refer to Figures 1 to 11 An adaptive uniform discharge screw extruder includes a drive mechanism 1 and a mounting platform 2. The drive mechanism 1 is connected to an extrusion screw 4 via a transmission mechanism. The outer side of the extrusion screw 4 is provided with a mixing chamber 5, a homogenizing chamber 6 and an agglomeration chamber 7. A drain assembly is installed on the outer wall of the homogenizing chamber 6. Two symmetrically arranged replenishment pipes 13 are provided in the drain assembly. Filter covers 14 are fixed on the inner side walls of the upper and lower ends of the replenishment pipes 13. A suction plate 15 is provided in the pipe of the upper replenishment pipe 13. A magnetic variable component is provided on one side of the suction plate 15. Among them, the filter cover 14 is made of multi-layer high-efficiency filter material, which can prevent solid impurities in the sludge from entering the replenishment pipe 13. Furthermore, the drive mechanism 1 is fixed on the mounting platform 2, the transmission mechanism includes a gear transmission box and a reducer structure, a sludge feeding hopper 3 is provided on the mixing chamber 5, the homogenizing chamber 6 and the agglomeration chamber 7 are arranged alternately, an extrusion template is fixedly installed on the outermost homogenizing chamber 6, the drainage assembly includes a drainage hood 9 fixed on the outer wall of the homogenizing chamber 6, sealing rings 10 are fixedly installed at both the front and rear ends of the drainage hood 9, a booster pump box 8 is installed on the agglomeration chamber 7, the booster pump box 8 contains treatment agents, and an upper sealing seat 1 is fixed on the top of the homogenizing chamber 6. 2. The upper and lower ends of the supplement tube 13 are connected to the upper sealing seat 12 and the lower sealing seat 29 respectively. The supplement tube 13 has a hollow mesh at the suction assembly plate 15. The magnetic variable component includes an electromagnetic ring 17 fixed on the outer wall of the supplement tube 13. The outer wall of the electromagnetic ring 17 is covered with a protective cover and electrically connected to an alternating power supply 11. The suction assembly plate 15 is fixedly connected to a displacement magnetic plate 16 by a fixing rod. A mesh plate is fixed on the inner wall of the supplement tube 13. The suction assembly plate 15 is slidably connected to the mesh plate by a fixing rod. A reset spring is sleeved on the outer wall of the fixing rod. It should be noted that after starting the drive mechanism 1, the gear transmission box and reducer structure drive the two extrusion screws 4 to rotate. Then, the sludge to be squeezed and dewatered and some treatment agents are put in through the sludge feeding hopper 3. The rotating extrusion screws 4 continuously squeeze the sludge. In the narrow gap between the threads of the two extrusion screws 4, the sludge is sheared at high speed. The two extrusion screws 4 and the inner wall of the uniform chamber 6 together form two overlapping C-shaped chambers. Under the push of the extrusion screws 4, the sludge moves forward along the channels of the two overlapping C-shaped chambers. When the two extrusion screws 4 rotate, the threads will roll up the sludge from the bottom and throw it above the meshing area. In the upper central area, the sludge flow from the two extrusion screws 4 will merge to generate a thinner sludge. The sludge below the meshing area, after being squeezed and sheared, will become denser and be continuously pushed forward and downward by the extrusion screws 4, so that the sludge is in an uneven state during the overall squeezing and pushing process. During the sludge extrusion process in the uniform chamber 6, the alternating power supply 11 intermittently supplies a strong current to the electromagnetic ring 17 and gradually reduces it. This causes the electromagnetic ring 17 to exhibit a state of instantaneous magnetic force increase and gradual decrease, resulting in a large magnetic force generated by the electromagnetic ring 17 on the displacement magnetic plate 16. This facilitates the displacement magnetic plate 16 to drive the suction assembly plate 15 to actively suction the relatively thin sludge mixture above the extrusion screw 4. The filter cover 14 will prevent the sludge from entering the replenishment pipe 13, and the suctioned water will enter the replenishment pipe 13 and be partially discharged in the perforated mesh section, allowing some of the actively suctioned water and treatment agent liquid to enter the lower end of the replenishment pipe 13. The benefits mentioned above are as follows: it can actively remove the thin sludge mixture with low solids content above the meshing zone, reducing the total amount of liquid that needs to enter the high-pressure section, reducing the load on the subsequent extrusion section, allowing it to focus more on the pressing of solids, improving the solids content of the final sludge cake and the equipment's processing capacity, and selecting out the upper free treatment agent liquid in the early stage of extrusion dewatering, improving agent utilization and reducing operating costs.

[0023] The supplementary pipe 13 is located in the pipe below and a one-way orifice plate 25 is fixed inside. A one-way component is provided on the inner side wall of the one-way orifice plate 25. A drive rod 19 is provided above the one-way orifice plate 25. A pressure-bearing arc plate 18 is provided above the drive rod 19. A spiral pressure blade 24 is rotatably connected to the bottom end of the one-way orifice plate 25 through a pin 23. Furthermore, the inner wall of the supplementary tube 13 is rotatably connected to the pin 23 via a connecting plate, the outer wall of the pin 23 is fixedly connected to the spiral pressurizing blade 24, the top end of the pin 23 is provided with a threaded groove, the drive rod 19 is connected to the push magnetic plate 21 via a connecting rod, the outer wall of the push magnetic plate 21 is fixed with a fixing button 22, the fixing button 22 is slidably connected to the threaded groove, the one-way component includes a hollow plate fixed in the hole of the one-way perforated plate 25, the hollow plate is fixed with a one-way rubber ball 26 via a tension spring, the hole of the one-way perforated plate 25 is fixed with a one-way bucket 27, the diameter of the one-way rubber ball 26 is larger than the inner diameter of the top end of the one-way bucket 27, the top end of the one-way rubber ball 26 is fixed with a pry bar 28 via a pull rope, the pry bar 28 is rotatably connected to a fixing cylinder via a steering seat, the fixing cylinder is fixed on the one-way perforated plate 25, the other end of the pry bar 28 is fixedly connected to a ring plate 20 via a pull rope, the inner wall of the ring plate 20 is connected to the connecting rod; It should be noted that: liquid will accumulate at the lower end of the replenishment pipe 13. As the sludge below the extrusion screw 4 continuously compacts, it will push the pressure-bearing arc plate 18 on the filter cover 14 of the lower sealing seat 29, causing the pressure-bearing arc plate 18 to slide on the filter cover 14, pressing down on the drive rod 19. This causes the drive rod 19 to move the ring plate 20 and the pushing magnetic plate 21 downwards. The pushing magnetic plate 21 will then move the fixing button 22 to slide in the threaded groove of the pin 23, thereby driving the spiral pressure blade 24 through the pin 23. The rotation causes the liquid gathered below the spiral pressurizing blades 24 to be continuously pressed in and concentrated below the one-way perforated plate 25. At the same time, the downward movement of the ring plate 20 will cause one end of the pry bar 28 to deflect downward, causing the end connected to the one-way rubber ball 26 by the pull rope to deflect upward and tilt, creating a gap between the one-way rubber ball 26 and the one-way bucket 27. As the liquid is continuously pressed in, the liquid will continuously seep into the area above the one-way perforated plate 25, allowing the liquid to continuously permeate through the filter cover 14 into the area below the extrusion screw 4. The benefits mentioned above are as follows: when the liquid extracted from the upper layer is most severely compacted at the bottom layer, it can be precisely and automatically reinjected to moisten the hardened sludge lumps, effectively preventing the sludge from drying out and adhering to the filter screen or chamber wall, thus preventing blockage and ensuring continuous and stable operation of the equipment. The reinjected liquid can promote further contact between the dense sludge below and the chemicals, improve the overall mixing uniformity of the sludge and the treatment chemicals, and enhance the flocculation and dewatering effect.

[0024] The bottom of the uniform chamber 6 is fixed with a lower sealing seat 29, and a stepped groove is provided on the lower sealing seat 29. A crushing component is provided in the stepped groove.

[0025] Furthermore, the crushing assembly includes a push plate 30 that is slidably disposed on the stepped groove of the lower sealing seat 29. The push plate 30 is fixedly connected to a mud-breaking arc plate 31. The mud-breaking arc plate 31 is fixed to a steering knob 33 by a magnetic column 32. A spiral groove that slides with the steering knob 33 is opened in the lower sealing seat 29. It should be noted that during the sludge extrusion process, the push plate 30 in the stepped groove of the lower sealing seat 29 will be subjected to the same pressure effect. The push plate 30 will first drive the sludge breaking arc plate 31 to slide in the stepped groove, so that the sludge breaking arc plate 31 drives the turning knob 33 on the magnetic column 32 to slide in the spiral groove. After the magnetic column 32 moves to the end, it is affected by the magnetic repulsion force on the end face of the spiral groove, which drives the sludge breaking arc plate 31 to reset. This allows the sludge breaking arc plate 31 to reciprocate left and right in the stepped groove, breaking up the dense sludge on the lower sealing seat 29. This facilitates the penetration of the mixed liquid of the treatment agent in the replenishment pipe 13, so that the treatment agent can be evenly mixed with the sludge in the two different states above and below the extrusion screw 4. In the subsequent process, the booster pump box 8 on the agglomeration chamber 7 will gradually add some of the treatment agent. The advantages mentioned above are as follows: the reciprocating shoving mud-breaking arc plate 31 set at the lower sealing seat 29 physically breaks the dense mud cake layer formed near the outlet, preventing the water filtration channel from being completely blocked. Breaking the caked layer provides a channel for the reinjected liquid and residual filtrate to seep down, ensuring that the liquid can penetrate evenly rather than accumulate locally, thereby ensuring the uniformity of the dewatering effect.

[0026] When using this invention, after starting the drive mechanism 1, the gear transmission box and reducer structure drive the two extrusion screws 4 to rotate. Then, the sludge to be squeezed and dehydrated and some treatment agents are put in through the sludge feeding hopper 3. The rotating extrusion screws 4 continuously squeeze the sludge. In the narrow gap between the threads of the two extrusion screws 4, the sludge is sheared at high speed. The two extrusion screws 4 and the inner wall of the uniform chamber 6 together form two overlapping C-shaped chambers. Under the push of the extrusion screws 4, the sludge moves forward along the channels of the two overlapping C-shaped chambers. When the two extrusion screws 4 rotate, the threads will roll up the sludge from the bottom and throw it above the meshing area. In the upper central area, the sludge flow from the two extrusion screws 4 will merge to generate a thinner sludge. The sludge below the meshing area, after being squeezed and sheared, will become denser and be continuously pushed forward and downward by the extrusion screws 4, so that the sludge is in an uneven state during the overall squeezing and pushing process. During the sludge extrusion process in the uniform chamber 6, the alternating power supply 11 intermittently supplies a strong current to the electromagnetic ring 17 and gradually reduces it. This causes the electromagnetic ring 17 to experience a state of instantaneous magnetic force increase and gradual decrease, resulting in a large magnetic force generated by the electromagnetic ring 17 on the displacement magnetic plate 16. This facilitates the displacement magnetic plate 16 to drive the suction plate 15 to actively suction the relatively thin sludge mixture above the extrusion screw 4. The filter cover 14 prevents sludge from entering the replenishment pipe 13, while the suctioned water enters the replenishment pipe 13 and is partially discharged in the perforated mesh section. This allows some of the actively suctioned water and treatment agent liquid to enter the lower end of the replenishment pipe 13, ensuring the sludge dewatering effect and selecting out the treatment agents that are difficult to enter from the upper part of the uniform chamber 6, facilitating the subsequent reuse of the treatment agents. Subsequently, liquid accumulates at the lower end of the replenishment pipe 13. As the sludge below the extrusion screw 4 continuously compacts, it pushes the pressure-bearing arc plate 18 on the filter cover 14 of the lower sealing seat 29, causing the pressure-bearing arc plate 18 to slide on the filter cover 14 and press down on the drive rod 19. This causes the drive rod 19 to move the ring plate 20 and the pushing magnetic plate 21 downwards. The pushing magnetic plate 21 then moves the fixing button 22 to slide in the threaded groove of the pin 23, which in turn drives the spiral pressure blade 24 to rotate through the pin 23. This causes the liquid accumulated below the spiral pressure blade 24 to be continuously pressed in and concentrated below the one-way perforated plate 25. At the same time, the downward movement of the ring plate 20 causes one end of the pry bar 28 to deflect downwards, allowing the pull rope and one-way rubber to... One end of the ball 26 is tilted upwards, creating a gap between the one-way rubber ball 26 and the one-way bucket 27. As the liquid is continuously pressed in, it will continuously seep into the area above the one-way perforated plate 25, allowing the liquid to continuously penetrate through the filter cover 14 into the area below the extrusion screw 4. This facilitates wetting the densely packed sludge below, making the removal of the sludge easier. As the extrusion screw 4 rolls the sludge upwards, the pushing force of the sludge on the pressure arc plate 18 will decrease. Under the magnetic repulsion of the pushing magnetic plate 21 and the inner end face of the threaded groove of the pin shaft 23, the drive rod 19 will tend to move upwards. As the drive rod 19 moves upwards, the pressure arc plate 18 will slide back to its original position. During the aforementioned sludge compression process, the push plate 30 within the stepped groove of the lower sealing seat 29 experiences the same pressure effect. The push plate 30 first drives the sludge-breaking arc plate 31 to slide within the stepped groove, causing the sludge-breaking arc plate 31 to drive the steering knob 33 on the magnetic column 32 to slide within the spiral groove. After the magnetic column 32 moves to its end, it is affected by the magnetic repulsion force on the inner end face of the spiral groove, causing the sludge-breaking arc plate 31 to reset. This allows the sludge-breaking arc plate 31 to reciprocate left and right within the stepped groove, effectively compressing the densely packed sludge on the lower sealing seat 29. The process involves breaking down the sludge to allow the mixed liquid of the treatment agent in the replenishment pipe 13 to penetrate in, enabling the treatment agent to be evenly mixed with the sludge in the two different states above and below the extrusion screw 4. In the subsequent process, the booster pump box 8 on the agglomeration chamber 7 will gradually add some treatment agent, so that the treatment agent can be continuously and evenly mixed in during the pressurization of the sludge. This facilitates the uniform mixing of the sludge with the reagent and the upper and lower solid-liquid layers during the continuous extrusion process, ensuring that the sludge is continuously and evenly extruded and improving the sludge extrusion and dewatering effect.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adaptive uniform discharge screw extruder, comprising a drive mechanism (1) and a mounting platform (2), characterized in that, The drive mechanism (1) is connected to the extrusion screw (4) through the transmission mechanism. The extrusion screw (4) is provided with a mixing chamber (5), a uniform chamber (6) and an agglomeration chamber (7) on its outer side. A drain assembly is installed on the outer wall of the uniform chamber (6). Two symmetrically arranged replenishment pipes (13) are provided in the drain assembly. Filter covers (14) are fixed on the inner walls of the upper and lower ends of the replenishment pipes (13). A suction plate (15) is provided in the pipe above the replenishment pipe (13). A magnetic variable component is provided on one side of the suction plate (15). A one-way perforated plate (25) is fixed in the pipe below the replenishment pipe (13). A one-way component is provided on the inner wall of the one-way perforated plate (25). A drive rod (19) is provided above the one-way perforated plate (25), and a pressure-bearing arc plate (18) is provided above the drive rod (19). A spiral pressure blade (24) is rotatably connected to the bottom end of the one-way perforated plate (25) through a pin (23). A lower sealing seat (29) is fixed at the bottom of the uniform chamber (6). A stepped groove is provided on the lower sealing seat (29), and a crushing component is provided in the stepped groove.

2. The adaptive uniform discharge screw extruder according to claim 1, characterized in that, The drive mechanism (1) is fixed on the installation platform (2). The transmission mechanism includes a gear transmission box and a reducer structure. A sludge feeding hopper (3) is provided on the mixing chamber (5). The uniform chamber (6) and the agglomeration chamber (7) are arranged alternately. An extrusion template is fixedly installed on the outermost uniform chamber (6).

3. The adaptive uniform discharge screw extruder according to claim 1, characterized in that, The drainage assembly includes a drainage hood (9) fixed on the outer wall of the uniform chamber (6), with sealing rings (10) fixedly installed at both the front and rear ends of the drainage hood (9), and a booster pump box (8) installed on the agglomeration chamber (7), which contains treatment agents.

4. The adaptive uniform discharge screw extruder according to claim 1, characterized in that, The top of the uniform chamber (6) is fixed with an upper sealing seat (12), and the upper and lower ends of the supplement tube (13) are connected to the upper sealing seat (12) and the lower sealing seat (29) respectively. The supplement tube (13) has a hollow mesh at the suction plate (15).

5. An adaptive uniform discharge screw extruder according to claim 1, characterized in that, The magnetic variable assembly includes an electromagnetic ring (17) fixed on the outer wall of the supplement tube (13). The outer wall of the electromagnetic ring (17) is covered with a protective cover and electrically connected to an alternating power supply (11). The suction assembly plate (15) is fixedly connected to a displacement magnetic plate (16) by a fixing rod. A mesh plate is fixed on the inner wall of the supplement tube (13). The suction assembly plate (15) is slidably connected to the mesh plate by a fixing rod. A reset spring is sleeved on the outer wall of the fixing rod.

6. The adaptive uniform discharge screw extruder according to claim 1, characterized in that, The inner wall of the supplement tube (13) is rotatably connected to the pin (23) through a connecting plate. The outer wall of the pin (23) is fixedly connected to the spiral pressure blade (24). A threaded groove is provided at the top of the pin (23). The drive rod (19) is connected to the push magnetic plate (21) through a connecting rod. A fixing button (22) is fixed on the outer wall of the push magnetic plate (21). The fixing button (22) is slidably connected to the threaded groove.

7. An adaptive uniform discharge screw extruder according to claim 6, characterized in that, The one-way component includes a perforated plate fixed in the hole of the one-way perforated plate (25), and a one-way rubber ball (26) is fixed to the perforated plate by a tension spring. A one-way bucket (27) is fixed on the hole of the one-way perforated plate (25), and the diameter of the one-way rubber ball (26) is larger than the inner diameter of the top of the one-way bucket (27).

8. An adaptive uniform discharge screw extruder according to claim 7, characterized in that, The top of the one-way rubber ball (26) is fixed with a pry bar (28) by a pull rope. The pry bar (28) is rotatably connected to a fixed cylinder by a steering seat. The fixed cylinder is fixed on the one-way perforated plate (25). The other end of the pry bar (28) is fixedly connected to a ring plate (20) by a pull rope. The inner side wall of the ring plate (20) is connected to a connecting rod.

9. An adaptive uniform discharge screw extruder according to claim 1, characterized in that, The crushing assembly includes a push plate (30) that is slidably disposed on the stepped groove of the lower sealing seat (29). The push plate (30) is fixedly connected to a mud-breaking arc plate (31). The mud-breaking arc plate (31) is fixed with a steering knob (33) by a magnetic column (32). The lower sealing seat (29) has a spiral groove that slides with the steering knob (33).

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