A screw conveyor for a horizontal screw centrifuge

Abstract

This utility model relates to the field of horizontal screw centrifuge technology, specifically a screw conveyor for a horizontal screw centrifuge. It includes a frame, on which a large motor is fixedly mounted. Through the arrangement of a solid tube, a threaded rod, a sliding rod, a brush ring, a spring, and brush blades, the synergistic effect of these structures allows residual material to easily adhere to the inner wall of the solid tube. The threaded rod and sliding rod drive the brush ring to move axially along the pipe, providing basic power and directional control for cleaning operations. The spring groove, in conjunction with the spring and brush seat, allows the brush blades to conform to the contour of the inner wall of the solid tube. During operation, the small motor drives the threaded rod to rotate, and the brush ring slides synchronously along the sliding rod. The elastic adjustment function of the spring ensures that the brush blades always clean the tube wall with optimal pressure, avoiding cleaning dead zones or excessive wear of components due to uneven pressure. This not only ensures the smooth flow of the solid tube and reduces the risk of material blockage, but also improves the automation level and operating efficiency of the solid conveying process in the horizontal screw centrifuge.

Description

Technical Field

[0001] This utility model relates to the field of horizontal screw centrifuge technology, and in particular to a screw conveyor for a horizontal screw centrifuge. Background Technology

[0002] The screw conveyor of a horizontal decanter centrifuge, a key component for solid-liquid separation, is widely used in chemical, environmental protection, and food industries. It primarily achieves material separation and conveying through centrifugal force generated by high-speed rotation, offering advantages such as large throughput, high separation efficiency, and continuous operation. Publication number CN204953143U discloses a horizontal decanter centrifuge, relating to the technical field of horizontal decanter centrifuges, including a differential gear, a rotating drum, a screw propeller, and a casing. The rotating drum is housed within the casing, with a liquid phase outlet and a sludge outlet at each end. The screw propeller is disposed inside the rotating drum, forming a material pool between the inner wall of the drum and the screw propeller. A baffle is fixedly fitted onto the side of the screw propeller near the sludge outlet, and a loose end is provided at the end of the baffle opposite the liquid phase outlet. As the screw propeller operates, the slag loosening device drives the baffle to rotate, which in turn drives the slag loosening device to work. This reduces the compaction of the slag layer, decreases the pressure exerted by the slag layer on the baffle, and extends the service life of the baffle. While this invention uses a screw propeller and baffle to drive the slag loosening device, thus reducing the compaction of the slag layer, decreasing the pressure exerted on the baffle, and extending the baffle's service life, it is problematic when dealing with highly viscous, high-fiber, or easily crystallizing materials. Stubborn deposits can easily form on the inner wall of the solid discharge pipe. Uneven accumulation of these deposits can disrupt the stability of material flow within the discharge pipe, causing pulsations, jams, or even localized blockages in material transport, affecting the continuity of subsequent production processes. This device cannot effectively clean these deposits and requires improvement. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0004] This utility model adopts the following technical solution: a screw conveyor for a horizontal screw centrifuge, comprising a frame, a large motor fixedly mounted on the surface of the frame, a transmission roller fixedly mounted on the output end of the large motor, a transmission belt tumblingly connected to the surface of the transmission roller, a differential gear tumblingly connected to the surface of the transmission belt, an outer shell fixedly mounted on the surface of the frame, an outer shell fixedly mounted on the surface of the outer shell, a large stirring tank fixedly mounted on the output end of the differential gear, a small stirring tank fixedly mounted on the other end of the large stirring tank, a conveying pipe fixedly mounted on the other end of the small stirring tank, a liquid pipe and a solid pipe fixedly mounted on the surface of the outer shell, a small motor and a sliding rod fixedly mounted on the surface of the solid pipe, a threaded rod fixedly mounted on the output end of the small motor, a brush ring threadedly connected to the surface of the threaded rod, a spring groove formed on the surface of the brush ring, a spring fixedly mounted on the surface of the spring groove, a brush holder fixedly mounted on the other end of the spring, and a brush blade fixedly mounted on the surface of the brush holder.

[0005] Preferably, both the large and small stirring tanks are located inside the outer casing, with the liquid pipe positioned directly below the large stirring tank and the solid pipe positioned directly below the small stirring tank. The differential's precise torque control function optimizes the rotational speeds of the large and small stirring tanks in real time based on material concentration and separation requirements. It enhances shear force when processing high-viscosity materials and reduces speed to minimize breakage when processing fragile materials, achieving dynamic optimization of the separation effect. The sealed structure of the outer casing and the anti-backflow design of the liquid and solid pipes create a closed separation environment, effectively preventing liquid splashing and dust dispersion during separation. This ensures operational safety and reduces material loss.

[0006] Preferably, the length of the threaded rod and the length of the slide rod are the same and symmetrically distributed at both ends of the solid tube, and the inside of the brush ring and the surface of the slide rod are slidably connected. Here, when the small motor drives the threaded rod to rotate, the slide rod synchronously provides a parallel guiding force, so that the brush ring always maintains a horizontal linear motion during the cleaning of the inner wall of the solid tube, avoiding deviation or jamming due to uneven force, ensuring that the brush blade adheres to the tube wall consistently, effectively improving the uniformity and thoroughness of the cleaning effect. Even when cleaning highly viscous or clump-like materials, it can maintain a stable operating state, extending the service life of each component. The sliding connection between the brush ring and the slide rod, combined with the precise thread transmission of the threaded rod, enables the power of the small motor to be efficiently converted into the linear motion of the brush ring, continuously keeping the inner wall of the pipe smooth, effectively preventing blockage caused by the accumulation of material residue, and ensuring the efficient and stable operation of the solid conveying process of the horizontal screw centrifuge.

[0007] Preferably, the spring grooves are multiple and evenly distributed circumferentially on the bottom surface of the brush ring, and the side of the brush holder can be slidably connected between the spring and the inner side of the brush ring. Here, when cleaning the inner wall of the solid tube, even if there are minor unevenness or protrusions formed by material agglomerates on the tube wall, the brush holder can conform to the contour of the tube wall through the compression and rebound of the spring, ensuring that the brush blade always contacts the dirt with the optimal pressure. Compared with fixed brush blades, this not only greatly improves cleaning efficiency but also effectively avoids excessive wear of the brush blades due to excessive local pressure. When dealing with materials of different hardness and viscosity, the spring can adjust the extension and contraction of the brush holder according to the actual resistance. The evenly distributed spring grooves can also balance the radial force on the brush holder, preventing the brush ring from tilting due to uneven force during rotation cleaning, ensuring the smooth operation of the entire cleaning system, reducing mechanical wear during equipment operation, and providing a reliable guarantee for the long-term stable operation of the solid conveying link of the horizontal screw centrifuge.

[0008] Preferably, a discharge pipe is fixedly installed on the lower surface of the solid tube by screws. A glue groove is formed on the upper surface of the discharge pipe, and a rubber ring is fixedly installed on the surface of the glue groove. A discharge motor is fixedly installed on the surface of the discharge pipe, and a control rod is fixedly installed at the output end of the discharge motor. Here, during routine equipment maintenance or when the discharge pipe needs to be replaced to process materials with different characteristics, it can be quickly disassembled and installed simply by unscrewing the screws, shortening equipment maintenance time and reducing repair costs. The design of the glue groove and rubber ring forms a double seal, effectively preventing solid materials or dust from leaking at the connection point, avoiding material loss and environmental pollution. It also prevents external impurities from entering the pipe and affecting material purity, ensuring the sealing and cleanliness of the discharge process. The discharge motor can precisely control the speed and angle of the control rod according to production needs, and the control rod achieves uniform and stable material output.

[0009] Preferably, the glue tank is located directly below the solid tube, and the upper surface of the rubber ring is in contact with the lower surface of the solid tube. The surface of the control rod is rotatably connected to the inner side of the discharge tube by the rotation of the discharge motor. Here, the glue tank and the rubber ring form a vertical sealing and receiving structure, which effectively prevents material leakage from the connection when the solid material flows in the tube. The vertical contact sealing method facilitates installation and inspection. Because the control rod rotates in contact with the inner wall of the discharge tube, the gap size of the material passage can be precisely controlled. Whether it is granular, powdery, or lumpy material, the discharge speed and flow rate can be precisely adjusted according to its characteristics, avoiding material accumulation, reducing material residue and jamming in the tube, ensuring the continuity and stability of the discharge process, and reducing equipment wear caused by material friction, extending the service life of the discharge system, and providing a reliable guarantee for the stable operation of the horizontal screw centrifuge.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, by setting up a solid tube, threaded rod, sliding rod, brush ring, spring, and brush blade, the synergistic effect of these structures allows residual materials to easily adhere to the inner wall of the solid tube. The threaded rod and sliding rod drive the brush ring to move along the axial direction of the pipe, providing basic power and directional control for the cleaning operation. The spring groove, in conjunction with the spring and brush seat, allows the brush blade to conform to the contour of the inner wall of the solid tube. During operation, the small motor drives the threaded rod to rotate, and the brush ring slides synchronously along the sliding rod. The elastic adjustment function of the spring ensures that the brush blade always cleans the pipe wall with the best pressure, avoiding cleaning dead corners or excessive wear of parts caused by uneven pressure. This not only ensures the smooth flow of the solid tube and reduces the risk of material blockage, but also improves the automation level and operating efficiency of the solid conveying process of the horizontal screw centrifuge.

[0012] 2. In this utility model, by setting up a discharge pipe, a glue tank, a glue ring, a discharge motor, and a control rod, the discharge pipe and the solid pipe are tightly connected through the glue tank and the glue ring. After the glue ring is embedded in the glue tank, it fits tightly against the lower surface of the solid pipe to form a seal and protection, effectively preventing material leakage and ensuring a clean production environment and material purity. The discharge motor drives the control rod to rotate flexibly inside the discharge pipe according to production needs. By changing the speed and angle of the control rod, the material passage gap can be precisely adjusted. The speed of the control rod can be increased to improve the discharge efficiency, and low-speed rotation and small gap can be set to prevent blockage. This ensures the sealing and stability of the discharge process and realizes intelligent control of material output, improving the applicability and working efficiency of the horizontal screw centrifuge in actual production. Attached Figure Description

[0013] Figure 1 A schematic diagram of a screw conveyor for a horizontal screw centrifuge is provided for this utility model;

[0014] Figure 2 This utility model provides a schematic diagram of the conveying structure of the screw conveyor of a horizontal screw centrifuge;

[0015] Figure 3 This utility model provides a cross-sectional view of the solid tube structure of the screw conveyor of a horizontal screw centrifuge;

[0016] Figure 4 This utility model provides a schematic diagram of the cleaning structure of the screw conveyor of a horizontal screw centrifuge;

[0017] Figure 5 This utility model presents a schematic diagram of the discharge structure of the screw conveyor of a horizontal screw centrifuge.

[0018] Legend:

[0019] 1. Frame; 2. Large motor; 3. Drive roller; 4. Drive belt; 5. Differential; 6. Outer frame; 7. Outer casing; 8. Large mixing drum; 9. Small mixing drum; 10. Feeding pipe; 11. Liquid pipe; 12. Solid pipe; 13. Small motor; 14. Threaded rod; 15. Slide rod; 16. Brush ring; 17. Spring groove; 18. Spring; 19. Brush seat; 20. Brush blade; 21. Screw; 22. Discharge pipe; 23. Glue tank; 24. Glue ring; 25. Discharge motor; 26. Control rod. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1

[0023] Please see Figure 1-4This utility model provides a technical solution: a screw conveyor for a horizontal screw centrifuge, including a frame 1, which serves as the basic support structure for the entire screw conveyor, providing a stable mounting platform for other components such as the large motor 2 and the outer casing 6, ensuring the overall structural stability and safety of the equipment. The large motor 2 is fixedly mounted on the surface of the frame 1, and a transmission roller 3 is fixedly mounted on the output end of the large motor 2. A transmission belt 4 is rolledly connected to the surface of the transmission roller 3, and a differential 5 is rolledly connected to the surface of the transmission belt 4, providing precise torque control. Based on the material concentration and separation requirements, the rotational speeds of the large stirring tank 8 and the small stirring tank 9 are optimized to achieve efficient separation of materials with different characteristics, enhancing the adaptability and separation effect of the equipment. The outer casing 6 is fixedly mounted on the surface of the frame 1. A housing 7 is fixedly mounted on the surface of the differential 5. A large stirring tank 8 is fixedly mounted on the output end of the differential 5. A small stirring tank 9 is fixedly mounted on the other end of the large stirring tank 8. A conveying pipe 10 is fixedly mounted on the other end of the small stirring tank 9. A liquid pipe 11 and a solid pipe 12 are fixedly mounted on the surface of the housing 7. Both the large stirring tank 8 and the small stirring tank 9 are inside the housing 7. The liquid pipe 11 is located directly below the large stirring tank 8, and the solid pipe 12 is located directly below the small stirring tank 9. The precise torque control function of the differential 5 optimizes the rotation speed of the large stirring tank 8 and the small stirring tank 9 in real time according to the material concentration and separation requirements. When processing high-viscosity materials, it enhances the shear force, while when processing fragile materials, it reduces the rotation speed to reduce the breakage rate, achieving dynamic optimization of the separation effect. The sealing structure of the housing 6 and the housing 7 works in conjunction with the liquid pipe 10. 1. The anti-backflow design of the solid tube 12 creates a closed separation environment, effectively preventing liquid splashing and dust dispersion during the separation process. This ensures the safety of the operating environment and reduces material loss. A small motor 13 and a sliding rod 15 are fixedly installed on the surface of the solid tube 12. A threaded rod 14 is fixedly installed at the output end of the small motor 13. A brush ring 16 is threadedly connected to the surface of the threaded rod 14. The length of the threaded rod 14 is the same as the length of the sliding rod 15 and they are symmetrically distributed at both ends of the solid tube 12. The brush ring 16 is slidably connected to the inside of the sliding rod 15. Here, when the small motor 13 drives the threaded rod 14 to rotate, the sliding rod 15 synchronously provides a parallel guiding force, so that the brush ring 16 always maintains horizontal linear movement during the cleaning of the inner wall of the solid tube 12, avoiding... To prevent misalignment or jamming due to uneven force, the brush 20 maintains consistent contact with the pipe wall, effectively improving the uniformity and thoroughness of the cleaning effect. Even when cleaning highly sticky or clump-like materials, it maintains stable operation, extending the service life of each component. The sliding connection between the brush ring 16 and the slide rod 15, combined with the precise thread transmission of the threaded rod 14, efficiently converts the power of the small motor 13 into the linear motion of the brush ring 16, continuously keeping the inner wall of the pipe smooth and effectively preventing blockage caused by material residue accumulation. This ensures the efficient and stable operation of the solid conveying process of the horizontal screw centrifuge. The surface of the brush ring 16 has a spring groove 17, and a spring 18 is fixedly installed on the surface of the spring groove 17. The other end of the spring 18 is fixedly installed with a brush seat 19.Brush blades 20 are fixedly mounted on the surface of brush holder 19. Multiple spring grooves 17 are evenly distributed circumferentially on the bottom surface of brush ring 16. The side of brush holder 19 can be slidably connected to the inner side of brush ring 16 via spring 18. Here, when cleaning the inner wall of solid tube 12, even if there are minor unevenness or protrusions formed by material clumps on the tube wall, brush holder 19 can conform to the contour of the tube wall through the compression and rebound of spring 18, ensuring that brush blades 20 always contact the dirt with the best pressure. Compared with fixed brush blades 20, this not only greatly improves cleaning efficiency, but also effectively avoids excessive wear of brush blades 20 due to excessive local pressure. When dealing with materials of different hardness and viscosity, spring 18 can adjust the extension and contraction of brush holder 19 according to the actual resistance. The evenly distributed spring grooves 17 can also balance the radial force on brush holder 19, preventing brush ring 16 from tilting due to uneven force during rotation cleaning, ensuring the smooth operation of the entire cleaning system, reducing mechanical wear during equipment operation, and providing a reliable guarantee for the long-term stable operation of the solid conveying link of the horizontal screw centrifuge. ,

[0024] Example 2

[0025] Please see Figure 5A discharge pipe 22 is fixedly installed on the lower surface of the solid pipe 12 by screws 21, serving as the final discharge channel for solid materials. It receives the material conveyed by the solid pipe 12 and, under the action of the discharge motor 25 and the control rod 26, discharges the material from the equipment. A glue groove 23 is formed on the upper surface of the discharge pipe 22, and a rubber ring 24 is fixedly installed on the surface of the glue groove 23. The discharge motor 25 is fixedly installed on the surface of the discharge pipe 22. According to production needs, the rotation speed and angle of the control rod 26 are precisely controlled to achieve precise adjustment of the material discharge speed and flow rate, satisfying production requirements. To meet the needs of different production conditions, a control rod 26 is fixedly installed at the output end of the discharge motor 25. Here, when it is necessary to replace the discharge pipe 22 for routine maintenance or when handling materials with different characteristics, it can be quickly disassembled and installed by simply unscrewing the screw 21, shortening equipment maintenance time and reducing maintenance costs. The design of the glue tank 23 and the rubber ring 24 forms a double seal protection, which can effectively prevent solid materials or dust from leaking at the connection, avoiding material loss and environmental pollution. At the same time, it prevents external impurities from entering the pipe and affecting the purity of the material, ensuring the sealing of the discharge process. To ensure both safety and cleanliness, the discharge motor 25 can precisely control the speed and angle of the control rod 26 according to production needs. The control rod 26 then achieves uniform and stable material output. The glue tank 23 is located directly below the solid tube 12, and the upper surface of the rubber ring 24 is in contact with the lower surface of the solid tube 12. The surface of the control rod 26 is rotatably connected to the inner side of the discharge tube 22 by the rotation of the discharge motor 25. Here, the glue tank 23 and the rubber ring 24 form a vertical sealing and receiving structure, which effectively prevents material from flowing out of the connection when solid material flows in the tube. The leak-proof, vertically fitted sealing method facilitates installation and inspection. Because the control rod 26 rotates in close contact with the inner wall of the discharge pipe 22, the gap size of the material passage can be precisely controlled. Whether it is granular, powdery, or lumpy material, the discharge speed and flow rate can be precisely adjusted according to its characteristics, avoiding material accumulation, reducing material residue and jamming in the pipe, ensuring the continuity and stability of the discharge process, reducing equipment wear caused by material friction, extending the service life of the discharge system, and providing a reliable guarantee for the stable operation of the horizontal screw centrifuge.

[0026] Working principle: When dealing with highly viscous, high-fiber, or easily crystallizing materials, stubborn deposits easily form on the inner wall of the solid tube 12. This accumulation disrupts the stability of material flow within the solid tube 12, causing pulsations, jams, or even localized blockages, affecting the continuity of subsequent production processes. To effectively clean the inside of the solid tube 12, the small motor 13 is started. The small motor 13 drives the threaded rod 14 to rotate, and the sliding rod 15 provides parallel guidance for the brush ring 16. The brush ring 16 moves linearly along the axial direction of the solid tube 12. The spring 18 in the bottom spring groove 17 adjusts the extension and retraction of the brush seat 19 and the brush blade 20 according to the surface condition of the tube wall, so that the brush blade 20 always fits against the tube wall to scrape off stubborn deposits. The reciprocating motion of the brush ring 16 makes the brush blade 20 clean the deposits on the inner wall of the solid tube 12. The discharge motor 25 controls the speed and angle of the control rod 26 according to the conveying needs during the cleaning process to maintain a stable output of material in the discharge tube 22 until the inner wall of the solid tube 12 is cleaned and the equipment returns to a highly efficient and stable material handling state.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A screw conveyor for a decanter centrifuge, comprising a frame (1), characterized in that: A large motor (2) is fixedly mounted on the surface of the frame (1). A transmission roller (3) is fixedly mounted on the output end of the large motor (2). A transmission belt (4) is tumbled onto the surface of the transmission roller (3). A differential (5) is tumbled onto the surface of the transmission belt (4). A housing frame (6) is fixedly mounted on the surface of the frame (1). A housing (7) is fixedly mounted on the surface of the housing frame (6). A large stirring drum (8) is fixedly mounted on the output end of the differential (5). A small stirring drum (9) is fixedly mounted on the other end of the large stirring drum (8). A material conveying pipe (10) is fixedly mounted on the other end of the small stirring drum (9). The outer shell (7) is fixedly mounted with a liquid tube (11) and a solid tube (12). The solid tube (12) is fixedly mounted with a small motor (13) and a slide rod (15). The output end of the small motor (13) is fixedly mounted with a threaded rod (14). The surface of the threaded rod (14) is threadedly connected with a brush ring (16). The surface of the brush ring (16) is provided with a spring groove (17). The surface of the spring groove (17) is fixedly mounted with a spring (18). The other end of the spring (18) is fixedly mounted with a brush holder (19). The surface of the brush holder (19) is fixedly mounted with a brush blade (20).

2. Screw conveyor of a decanter centrifuge according to claim 1, characterized in that The large stirring tank (8) and the small stirring tank (9) are both inside the outer shell (7). The liquid tube (11) is located directly below the large stirring tank (8), and the solid tube (12) is located directly below the small stirring tank (9).

3. A screw conveyor for a decanter centrifuge according to claim 1, characterized in that: The threaded rod (14) has the same length as the slide rod (15) and is symmetrically distributed at both ends of the solid tube (12). The inside of the brush ring (16) and the surface of the slide rod (15) are slidably connected.

4. A screw conveyor for a decanter centrifuge according to claim 1, characterized in that: The spring grooves (17) are multiple and evenly distributed around the bottom surface of the brush ring (16). The side of the brush seat (19) can be slidably connected between the spring (18) and the inner side of the brush ring (16).

5. The screw conveyor of the horizontal screw centrifuge according to claim 1, characterized in that: The lower surface of the solid tube (12) is fixedly installed with a discharge tube (22) by screws (21). The upper surface of the discharge tube (22) is provided with a glue groove (23). A rubber ring (24) is fixedly installed on the surface of the glue groove (23). A discharge motor (25) is fixedly installed on the surface of the discharge tube (22). A control rod (26) is fixedly installed at the output end of the discharge motor (25).

6. A screw conveyor for a decanter centrifuge according to claim 5, characterized in that: The glue tank (23) is located directly below the solid tube (12), the upper surface of the rubber ring (24) and the lower surface of the solid tube (12) are in contact, and the surface of the control rod (26) is rotatably connected to the inside of the discharge tube (22) by the rotation of the discharge motor (25).

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