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CN-122007119-A - Screw extrusion dehydration molding press

CN122007119ACN 122007119 ACN122007119 ACN 122007119ACN-122007119-A

Abstract

The invention relates to the technical field of presses, and particularly discloses a screw extrusion dehydration molding press which comprises a dehydration cylinder, a feeding port communicated with the left side of the top surface of the dehydration cylinder, a rotating roller rotatably arranged in the dehydration cylinder, an extrusion screw plate integrally arranged on the outer side of the rotating roller, a molding discharging port arranged at the right end of the dehydration cylinder, a heating piece arranged in the rotating roller, a water channel arranged between the rotating roller and the heating piece at intervals, and an outer annular plate arranged on the outer side of the dehydration cylinder at equal intervals, wherein an inner annular plate with the same inner diameter as the dehydration cylinder is integrally fixed on the inner side of the outer annular plate, and an annular water filtering plate is embedded and arranged in the inner annular plate. This screw extrusion dehydration molding press utilizes the synergism of screw extrusion and heating, promotes dehydration efficiency and reduces the adhesion to cooperate negative pressure mechanism, guarantee solid useless extrusion molding quality, can reduce maintenance frequency, guarantee long-term use.

Inventors

  • DU PENG
  • LAI KE
  • LIU MAOLEI

Assignees

  • 简阳希望创美环保有限公司

Dates

Publication Date
20260512
Application Date
20260416

Claims (10)

  1. 1. The screw extrusion dehydration molding press comprises a dehydration cylinder (1) and a feed inlet (2) communicated with the left side of the top surface of the dehydration cylinder (1), wherein a rotary roller (3) is rotatably arranged in the dehydration cylinder (1), an extrusion spiral plate (4) is integrally arranged on the outer side of the rotary roller (3), and a molding discharge hole (7) is formed in the right end of the dehydration cylinder (1); Characterized by further comprising: A heating element (8) arranged inside the rotating roller (3), wherein a water channel (9) is arranged between the rotating roller (3) and the heating element (8) at intervals; The outer ring plates (11) are arranged on the outer side of the dewatering cylinder (1) at equal intervals, 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 into a whole to form a dewatering extrusion channel, and an annular water filtering plate (15) is embedded in the inner ring plate (14); The vent pipe (17), the vent pipe (17) is connected to the top end of the outer ring plate (11), and an air pump (19) is arranged at the far end of the vent pipe (17); Wherein the bottom end of the outer ring plate (11) is communicated with a water collecting tank (13).
  2. 2. The screw extrusion dehydration molding press as set forth in claim 1, wherein the outer diameter of the rotating roller (3) is gradually increased from left to right, the pitch of the extrusion screw plate (4) is gradually decreased from left to right, and the extrusion effect is enhanced by reducing and pitch-variable design.
  3. 3. The screw extrusion dehydration molding press according to claim 1, wherein the end of the water channel (9) is communicated with a communicating pipe (10) fixed at the top end of the rotary roller (3) for injecting heating medium.
  4. 4. The screw extrusion dehydration molding press according to claim 1, wherein the bottom end of the outer ring plate (11) is communicated with the water collecting tank (13) through a connecting port (12), a water inlet plate (16) is arranged between the outer ring plate (11) and the connecting port (12), and a percolation plate (23) for secondary filtration is arranged at the top of the inner side of the water collecting tank (13).
  5. 5. The screw extrusion dehydration molding press according to claim 1, wherein a water pump (20) is fixedly arranged on the outer side of the water collecting tank (13), and a drain pipe (21) and a filter ball (22) which are communicated with the input end of the water pump (20) are vertically arranged in the water collecting tank (13).
  6. 6. The screw extrusion dehydration molding press as set forth in claim 1, wherein the annular water filtering plates (15) are arranged at equal intervals inside the inner annular plate (14), and the annular water filtering plates (15) are arranged in an open annular shape to prevent water from splashing into the ventilation pipe (17).
  7. 7. The screw extrusion dehydration molding press according to claim 1, wherein the top end of the ventilation pipe (17) is communicated with the air pump (19) through the filter (18), the filter (18) and the air pump (19) are arranged on the outer side of the dehydration cylinder (1), the ventilation pipe (17), the filter (18) and the air pump (19) are used for sucking air into the outer annular plate (11) to form a negative pressure system, and the negative pressure system further comprises an exhaust air pressure gauge (6) arranged on the right end of the dehydration cylinder (1).
  8. 8. The screw extrusion dehydration molding press as set forth in claim 4, wherein a carriage (24) is arranged above the percolation plate (23), an adjusting rod (25) transversely connected inside the water collecting tank (13) is connected to the middle of the top end of the carriage (24), sliding rods (26) are symmetrically inserted on two sides of the end of the carriage (24), and a brush plate (27) contacted with the percolation plate (23) is arranged at the bottom of the carriage (24).
  9. 9. Screw extrusion dewatering press according to claim 8, characterized in that the brush plate (27) is rotatably connected to the carriage (24) by means of a hinge (28) for guiding the surface of the percolating plate (23) to be scraped.
  10. 10. The screw extrusion dehydration molding press as set forth in claim 9, wherein a sedimentation bin (29) is integrally arranged at the right end of the water collection tank (13), the top of the sedimentation bin (29) is communicated with the space above the percolation plate (23), and a vertical filter plate (30) for water percolation is arranged between the sedimentation bin (29) and the water collection tank (13).

Description

Screw extrusion dehydration molding press Technical Field The invention relates to the technical field of presses, in particular to a screw extrusion dehydration molding press, which belongs to the technical field of dehydration presses. Background The spiral extrusion dehydration forming press, also called as a spiral extrusion dehydrator, is equipment for realizing solid-liquid separation through mechanical extrusion, has the core functions of separating water in high-humidity materials (such as waste, food residues, industrial waste residues and the like), reducing the water content of the materials, facilitating subsequent treatment, and the application scene of the spiral extrusion dehydration forming press covers a plurality of fields of environmental protection, food, agriculture, industry and the like, and the efficient dehydration forming is a key step of resource utilization; Currently, solid waste dewatering mainly relies on the principle of screw extrusion, and the equipment generally comprises a dewatering drum, a rotating roller and a screw propeller. The materials are input from the feed inlet, extrusion is generated by the rotation of the spiral blade, so that the moisture is discharged through the filter plate, and the solid part is formed and then output; If the patent of bulletin number CN114801289B of authorizing proposes a dewatering device for pea starch production, including double-deck support frame, extrusion dehydration subassembly and mill the subassembly, extrusion dehydration subassembly includes bar shell and cone inner core, the one end of bar shell is equipped with the feed inlet, the other end is equipped with the discharge gate, the shaping has round helical blade on the cone inner core, the below of bar shell is equipped with drainage mechanism, drainage mechanism includes drainage pipe, drainage pipe is linked together and links to each other the department with bar shell and is equipped with the otter board, the one end that the discharge gate was kept away from to the support dish is equipped with the bin outlet, the extrusion dehydration subassembly of this device can carry out dehydration in the effect of cone inner core, the dehydration efficiency has been improved, the mill the subassembly of this device can be to the cubic starch of being after the dehydration carries out the mill, make dehydrated starch be the nature and scatter. For example, the patent with the publication number of CN215095836U proposes a spiral extrusion dehydration device, which comprises an outer cylinder, a feed inlet is formed in the upper side of the outer cylinder, a liquid outlet is formed in the lower side of the outer cylinder, a discharge outlet is formed in one end of the outer cylinder, a screen cylinder is fixedly connected in the inner part of the outer cylinder, a rotating shaft is connected in the inner part of the screen cylinder in a rotating manner, a motor is fixedly connected at one end of the rotating shaft, a dehydration spiral is fixedly connected on the peripheral surface of the rotating shaft, the dehydration spiral comprises an extrusion spiral and a compression spiral, one side, far away from the rotating shaft, of the extrusion spiral and one side, far away from the rotating shaft, of the compression spiral are respectively abutted against the inner peripheral surface of the screen cylinder, an abrasion-resistant layer made of elastic materials is coated on the surface of the extrusion spiral, a discharge pipe is fixedly connected at the position, corresponding to the discharge outlet, and one end of the discharge pipe is provided with a plurality of spring steel discharge pressing plates, so that the dehydration device has the advantage of improving the dehydration effect. However, in combination with practical application and other analysis in the prior art, the existing screw dehydrator still has certain disadvantages: 1. The dehydration efficiency is low, and the colloid structure in solid waste materials cannot be destroyed by simply extruding and dehydrating by virtue of a screw mechanism, so that bound water cannot be released, the water content of a dehydrated product is still higher, and the dehydration period is long; 2. Equipment adhesion and abrasion are serious, and in the dehydration process, solid waste is adhered with a spiral plate, a screen, a cylinder structure and the like, so that the equipment is blocked, the equipment is abraded more rapidly, and long-term stable use is influenced; 3. the structure strength is not enough, and the inside filter plate structure is general global design, and the deformation or the damage easily takes place in long-term high pressure extrusion dehydration operation, influences dehydration efficiency, leads to solid useless shaping inseparable more. Therefore, we propose a screw press dehydration molding press to solve the above-mentioned problems. Disclosure of Invention The invention aims to provide a screw extru