CN-117656571-B - Supercharged double-screw oil press

CN117656571BCN 117656571 BCN117656571 BCN 117656571BCN-117656571-B

Abstract

The invention provides a supercharged double-screw oil press, which comprises a press chamber and two press screws, wherein the press chamber comprises a first press cage, a second press cage and a supercharging cavity which is hermetically arranged between the first press cage and the second press cage, the supercharging cavity comprises a sleeve, a cylinder and a supercharging cavity driving mechanism, a 8-shaped cavity is arranged in the sleeve, the 8-shaped cavity comprises an upper cavity and a lower cavity which are communicated, the inner diameters of the upper cavity and the lower cavity are larger than the diameter of the press screws and smaller than the inner diameters of the first press cage and the second press cage, the end part of the sleeve is fixedly and hermetically connected with one of the press cages, the cylinder is rotatably arranged outside the sleeve, an annular cavity is formed between the cylinder and the sleeve, openings which are used for enabling the 8-shaped cavity to be communicated with the annular cavity are arranged at two ends of the 8-shaped cavity, and the supercharging cavity driving mechanism is connected with the cylinder and used for driving the cylinder to rotate. The invention can increase the pressure in the squeezing cavity, has the function of forward transportation on the blank, and improves the squeezing efficiency.

Inventors

LI BIN
WU JIALI
LI SHILONG
ZOU QUAN
ZHU YANSONG
WU YANGKUN
HU ZHIGANG
JIANG YAJUN

Assignees

武汉轻工大学

Dates

Publication Date: 20260508
Application Date: 20231127

Claims (8)

1. The supercharged double-screw oil press is characterized in that the press chamber comprises a first press cage connected with a feed inlet of the oil press, a second press cage connected with a slag hole of the oil press and a pressurizing cavity arranged between the first press cage and the second press cage in a sealing mode, the pressurizing cavity comprises a sleeve, a cylinder and a pressurizing cavity driving mechanism, a 8-shaped cavity is arranged in the sleeve, the 8-shaped cavity comprises an upper cavity and a lower cavity which are communicated, the inner diameters of the upper cavity and the lower cavity are larger than the diameter of the press screw and smaller than the inner diameters of the first press cage and the second press cage, the end portion of the sleeve is fixedly and hermetically connected with one of the press cages, the cylinder is rotatably arranged outside the sleeve, a gap between the cylinder and the sleeve forms an annular cavity, two ends of the 8-shaped cavity are provided with openings used for enabling the 8-shaped cavity to be communicated with the annular cavity, a plurality of rings of spiral sliding grooves are arranged on the inner wall of the cylinder, and the pressurizing cavity driving mechanism is connected with the cylinder and used for driving the cylinder to rotate; the oil press further comprises a scraper mechanism for cleaning the spiral chute, the scraper mechanism comprises a scraper shell and a scraper component, the scraper shell is arranged in the sleeve, the scraper component is provided with a plurality of groups and is arranged in the scraper shell, each group of scraper component comprises two rack cavities corresponding to each circle of spiral chute, racks vertically arranged in each rack cavity, a gear arranged between the two racks and meshed with the two racks and a scraper arranged at the bottom of each rack, the side surface of the lower part of the scraper, facing the inner wall of the spiral chute, of the scraper is a chamfer surface, the chamfer surface is used for driving the corresponding scraper to move up to the upper part of the spiral chute from the inside of the spiral chute when contacting with the inner wall of the spiral chute, the gear is used for driving one rack to move downwards into the spiral chute from the upper part of the spiral chute when being meshed with the other rack which moves upwards.
2. The supercharged double-screw oil press according to claim 1, wherein a self-locking lock catch is arranged above the bevel surface on the scraper, a lock catch groove configured with the self-locking lock catch is arranged in the rack cavity, the lower ends of the two scraper extend out of the scraper shell and the sleeve and fall into the same screw chute in an initial state, and the self-locking lock catch is separated from the lock catch groove when the bevel surface of the corresponding scraper is contacted and stressed with the inner wall of the screw chute for the first time.
3. The supercharged double-screw oil press according to claim 1 or 2, wherein a plurality of balls are arranged on the periphery of the bottom of the rack, ball grooves which are configured with the balls are arranged on the inner wall of each rack cavity along the vertical direction, a pillar cavity is arranged on the bottom of the rack, a scraper pillar is arranged on the top of the scraper, the top of the scraper pillar is contacted with the top of the pillar cavity, the diameter of the scraper pillar is smaller than that of the pillar cavity, the axial length of the scraper pillar is larger than that of the pillar cavity, and the scraper and the rack are connected through a plurality of springs.
4. The supercharged double-screw oil press of claim 1, wherein said scraper housing is connected to said sleeve by a magnetic structure.
5. The supercharged double-screw oil press of claim 1, wherein said cylindrical inner wall is provided with a plurality of oil guiding grooves along an axial direction.
6. The supercharged double-screw oil press of claim 1, wherein the supercharged cavity driving mechanism comprises an external driving motor, an external driving shaft fixedly connected with an output shaft of the external driving motor, an external driving gear fixedly arranged on the external driving shaft and an external gear ring arranged on the periphery of the cylinder and meshed with the external driving gear.
7. The supercharged double-screw oil press of claim 1, wherein a plurality of shear rings are sleeved outside the press screw in the supercharging cavity, the outer circumferential surfaces of the shear rings are polygonal, and adjacent shear rings are staggered by a certain angle.
8. The supercharged double-screw oil press of claim 1, further comprising an oil reservoir below the press bore, wherein a filter screen and a hydrophobic and oleophilic material layer are disposed in the oil reservoir from top to bottom.

Description

Supercharged double-screw oil press Technical Field The invention belongs to the technical field of grease processing, and particularly relates to a supercharged double-screw oil press. Background The double-screw oil press is a screw oil press with two opposite-running press screws in the same press cage, and utilizes the action of the press cage matched with the extrusion force generated by the two opposite-running press screws in the press cage to extrude the grease in the blank, and the whole oil pressing process from the blank entering the oil press to the cake is continuously carried out. The common double-screw oil press generally adopts a cylinder pressing cavity and a double-screw structure. The existing cylinder pressing cavity is a smooth continuous cavity, the pressing cavity space of the cylinder pressing cavity is gradually changed from large to small, the number of blanks in the pressing cavity is increased to small, and in the process that the auger drives the blanks to advance, the blanks at the edge are pressed with low efficiency due to insufficient internal pressure of the continuous cavity, so that the pressing efficiency is affected. Disclosure of Invention In order to solve the technical problems, the invention provides a supercharged double-screw oil press, which can increase the internal pressure of a pressing cavity during oil pressing, has a forward conveying function on a blank and improves the pressing efficiency. The technical scheme adopted for solving the technical problems is as follows: the utility model provides a booster-type double helix oil press, includes the barrel and locates two press screws in the barrel parallelly, the barrel includes the first press cage of being connected with the oil press feed inlet, the second press cage of being connected with the oil press slag notch and the pressurized cavity of sealing between first press cage and the second press cage of locating, the pressurized cavity includes sleeve, drum and pressurized cavity actuating mechanism, be equipped with 8 font cavity in the sleeve, 8 font cavity includes the upper chamber and the lower chamber that are linked together, the internal diameter of upper chamber and lower chamber is all greater than the diameter of press screw and is less than the internal diameter of first press cage and second press cage, the tip and one of them press cage of sleeve are fixed and sealing connection, the drum rotates to install outside the sleeve, and forms the annular chamber with the clearance between the sleeve, 8 font cavity's both ends are equipped with the opening that is used for making 8 font cavity and annular chamber intercommunication, pressurized cavity actuating mechanism is connected and is used for driving the drum to rotate with the drum. Optionally, a plurality of spiral sliding grooves are arranged on the inner wall of the cylinder. Optionally, the oil press further includes a scraper mechanism for cleaning the spiral chute, the scraper mechanism includes: The scraper shell is arranged in the sleeve; the scraper assembly is provided with a plurality of groups, and is installed in the scraper shell, and every group of scraper assembly includes two rack cavities corresponding to every circle of spiral chute, vertically locates the rack in every rack cavity, locates between two racks and with the gear of two rack meshing connection and set up in the scraper of every rack bottom, the lower part of scraper is the chamfer towards the side of spiral chute inner wall, and this chamfer is used for driving the scraper that corresponds when contacting with spiral chute inner wall and moves to spiral chute top from the spiral chute in, the gear is used for driving another rack to move to in the spiral chute from spiral chute top down when meshing with one rack that moves up. Optionally, be located the top of chamfer on the scraper and be equipped with the auto-lock hasp, the rack intracavity is equipped with the hasp groove that disposes mutually with the auto-lock hasp, and the lower extreme of two scrapers all stretches out outside scraper shell, sleeve and falls in same spiral spout during initial state, the auto-lock hasp breaks away from the hasp groove when the chamfer of corresponding scraper is first with spiral spout inner wall contact atress. Optionally, the bottom periphery of rack is provided with a plurality of ball, is equipped with the ball groove that disposes mutually with the ball along vertical direction on the inner wall in every rack chamber, the bottom of rack is equipped with the pillar chamber, the top of scraper is equipped with the scraper pillar, the top of scraper pillar contacts with the chamber top in pillar chamber, the diameter of scraper pillar is less than the diameter in pillar chamber, the axial length of scraper pillar is greater than the axial depth in pillar chamber, connect through a plurality of springs between scraper and the rack. Optionally, the scraper shell i