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CN-224224603-U - Spiral structure of dry-wet separator with conical double-spiral blade extrusion section

CN224224603UCN 224224603 UCN224224603 UCN 224224603UCN-224224603-U

Abstract

The utility model relates to a spiral structure of a dry-wet separator with a conical double-spiral blade extrusion section, which comprises a connecting section, a feeding section and an extrusion section which are detachably connected in sequence. The connecting section is provided with a spindle with a built-in bolt, the feeding section adopts a hollow cylindrical spindle matched with a single helical blade structure, and the extruding section adopts a conical spindle with an increasing shaft diameter and is fixedly provided with double helical blades. Accurate centering and torque transmission are realized through the cooperation of keyway and connecting key between each section to provide axial compressive force by the through bolt, make connecting section and feeding section compressed tightly and fix between bolt head and extrusion section. The structure forms a progressive pressurizing effect through the synergistic effect of the conical main shaft and the double helical blades, so that the extrusion force is obviously enhanced, and the dehydration rate of the dry-wet separator is improved. Compared with an integral welding type structure, the three-section detachable design realizes modularized assembly, and the damaged section can be independently replaced without integral maintenance, so that the maintenance difficulty and the cost are greatly reduced.

Inventors

  • NA RISU
  • WANG NAN
  • MA SILU
  • SUN HAORAN

Assignees

  • 内蒙古工业大学

Dates

Publication Date
20260512
Application Date
20250604

Claims (10)

  1. 1. The spiral structure of the dry-wet separator with the conical double-spiral blade extrusion section is characterized by comprising a connecting section (1), a feeding section (2) and an extrusion section (3) which are detachably and fixedly connected in sequence, wherein the connecting section (1) comprises a connecting section main shaft (11) and a bolt (12) rotatably arranged in the connecting section main shaft (11), the feeding section (2) comprises a hollow cylindrical feeding section main shaft (21) and a single-spiral blade (22) fixed on the feeding section main shaft (21), the extrusion section (3) comprises a conical extrusion section main shaft (31) with the gradually increased axial diameter from a feeding end to a discharging end, and the double-spiral blade (32) is fixedly arranged on the extrusion section main shaft (31); The connecting section key groove (13) is formed in the connecting section (1), the extruding section key groove (33) is formed in the extruding section (3), one end of the feeding section (2) is fixedly provided with a connecting section connecting key (23) matched with the connecting section key groove (13), the other end of the feeding section (2) is fixedly provided with an extruding section connecting key (24) matched with the extruding section key groove (33), when the connecting section connecting key (23) is inserted into the connecting section key groove (13), the extruding section connecting key (24) is inserted into the extruding section key groove (33), and a screw rod (121) of the bolt (12) penetrates through a feeding section main shaft (21) and is connected to a threaded hole (34) formed in the extruding section main shaft (31) in a threaded mode, and the connecting section (1) and the feeding section (2) are tightly pressed and fixed between a bolt head (122) of the bolt (12) and the extruding section (3).
  2. 2. The spiral structure with the conical double-spiral blade extrusion section of the dry-wet separator of claim 1, wherein the connecting section (1) is fixedly connected with a connecting section step (14), the connecting section step (14) comprises a connecting section primary step (141) and a connecting section secondary step (142), and the connecting section key slot (13) comprises a primary connecting section key slot (131) formed in the connecting section primary step (141) and a secondary connecting section key slot (132) formed in the connecting section secondary step (142).
  3. 3. The spiral structure with the conical double-spiral blade extrusion section of the dry-wet separator of claim 2, wherein a plurality of first-stage connecting section key grooves (131) and a plurality of second-stage connecting section key grooves (132) are arranged, and the plurality of first-stage connecting section key grooves (131) and the plurality of second-stage connecting section key grooves (132) are distributed in a circumferential array around the central axis of the connecting section main shaft (11).
  4. 4. The screw structure with the conical double-screw blade extrusion section of the dry-wet separator of claim 3, wherein the primary connecting section key grooves (131) and the secondary connecting section key grooves (132) are staggered along the circumferential direction.
  5. 5. The screw structure with the tapered double helical blade extrusion section of the dry and wet separator according to claim 2, wherein the connecting section connecting key (23) comprises a primary connecting section connecting key (231) matched with the primary connecting section key groove (131) and a secondary connecting section connecting key (232) matched with the secondary connecting section key groove (132).
  6. 6. The spiral structure with the conical double-spiral blade extrusion section of the dry-wet separator of claim 1, wherein the extrusion section (3) is fixedly connected with an extrusion section step (35), the extrusion section step (35) comprises an extrusion section primary step (351) and an extrusion section secondary step (352), and the extrusion section key slot (33) comprises a primary extrusion section key slot (331) formed in the extrusion section primary step (351) and a secondary extrusion section key slot (332) formed in the extrusion section secondary step (352).
  7. 7. The spiral structure with the conical double-spiral blade extrusion section of the dry-wet separator of claim 6, wherein a plurality of first-stage extrusion section key grooves (331) and a plurality of second-stage extrusion section key grooves (332) are arranged, and the plurality of first-stage extrusion section key grooves (331) and the plurality of second-stage extrusion section key grooves (332) are distributed in a circumferential array around the central axis of the extrusion section main shaft (31).
  8. 8. The screw structure with conical double-screw blade extrusion section of dry-wet separator according to claim 7, wherein the primary extrusion section key groove (331) and the secondary extrusion section key groove (332) are staggered along the circumferential direction.
  9. 9. The screw structure with a tapered double helical blade pressing section of the dry and wet separator according to claim 6, wherein the pressing section connecting key (24) comprises a primary pressing section connecting key (241) matched with the primary pressing section key groove (331) and a secondary pressing section connecting key (242) matched with the secondary pressing section key groove (332).
  10. 10. The screw structure with a tapered double-screw blade extrusion section of the dry-wet separator according to claim 1, wherein the double-screw blade (32) comprises a first extrusion-section screw blade (321) and a second extrusion-section screw blade (322), the screw pitch of the first extrusion-section screw blade (321) is equal to the screw pitch of the single-screw blade (22), and the screw pitch of the second extrusion-section screw blade (322) is equal to the screw pitch of the single-screw blade (22).

Description

Spiral structure of dry-wet separator with conical double-spiral blade extrusion section Technical Field The utility model relates to the technical field of dry-wet separators, in particular to a spiral structure of a dry-wet separator, which is provided with a conical double-spiral blade extrusion section. Background In recent years, with the large-scale development of livestock and poultry farming, the treatment of farming waste has become an important point of industry. The dry-wet separator is used as a high-efficiency solid-liquid separation device and is widely applied to livestock and poultry manure dehydration treatment. The performance of the spiral structure of the core component directly affects the dehydration efficiency and the equipment reliability. At present, the spiral structure of the existing dry-wet separator mainly comprises a spiral main shaft and single spiral blades welded on the spiral main shaft, and the structural design of the diameter-variable spiral main shaft matched with the single spiral blades is commonly adopted. In the dehydration process, the spiral blade rotates along with the main shaft to push the excrement to move to the discharge end, and the extrusion force is enhanced by increasing the diameter of the main shaft, so that the solid-liquid separation is realized, and the effect of dehydrating the excrement is achieved. However, the conventional spiral structure has the following problems in actual operation that when a single spiral blade conveys high-water-content feces, the extrusion force is limited, so that the dehydration effect is unstable, and the requirements of farmers on high-dryness feces are difficult to meet. In addition, the dry-wet separator works under the complex load of high temperature, high pressure and high speed operation for a long time, and the welding part of the single spiral blade and the main shaft is easy to generate fatigue crack or deformation, so that the strength is degraded and even broken and damaged, and the service life of equipment is seriously influenced. The existing spiral structure is designed in an integral welding mode, and once the spiral structure is locally damaged, integral maintenance or replacement is needed, so that the maintenance difficulty is high, the cost is high, and the operation burden of farmers is increased. Disclosure of utility model The utility model aims to provide a spiral structure with a conical double-spiral blade extrusion section of a dry-wet separator, so as to solve the technical problems that the extrusion force of the spiral structure of the existing dry-wet separator is insufficient and the maintenance is inconvenient after the spiral structure is damaged. The technical problems solved by the utility model can be realized by adopting the following scheme: The spiral structure of the dry-wet separator with the conical double-spiral blade extrusion section is characterized by comprising a connecting section, a feeding section and an extrusion section which are detachably and fixedly connected in sequence, wherein the connecting section comprises a connecting section main shaft and a bolt rotatably arranged in the connecting section main shaft, the feeding section comprises a hollow cylindrical feeding section main shaft and a single-spiral blade fixed on the feeding section main shaft, the extrusion section comprises a conical extrusion section main shaft with the shaft diameter gradually increased from a feeding end to a discharging end, and the double-spiral blade is fixed on the extrusion section main shaft; The connecting section key slot is formed in the connecting section, the extruding section key slot is formed in the extruding section, one end of the feeding section is fixedly provided with a connecting section connecting key matched with the connecting section key slot, the other end of the feeding section is fixedly provided with an extruding section connecting key matched with the extruding section key slot, when the connecting section connecting key is inserted into the connecting section key slot, the extruding section connecting key is inserted into the extruding section key slot, a screw rod of the bolt penetrates through the feeding section main shaft and is in threaded connection with a threaded hole formed in the extruding section main shaft, and the connecting section and the feeding section are tightly pressed and fixed between the bolt head of the bolt and the extruding section. The connecting section is characterized in that a connecting section step is fixedly connected to the connecting section, the connecting section step comprises a connecting section primary step and a connecting section secondary step, and the connecting section key slot comprises a primary connecting section key slot formed in the connecting section primary step and a secondary connecting section key slot formed in the connecting section secondary step. Further, a plurality of first-stage connecti