A squeezing device for squeezing rice oil processing

Abstract

This utility model discloses a pressing device for processing rice bran oil, belonging to the technical field of vegetable oil pressing equipment. The device has a column on its base, with a horizontal arm slidably mounted on the upper part of the column. A screw lifting mechanism is installed between the horizontal arm and the column. A downwardly extending pressure rod is installed at the end of the horizontal arm away from the column, and the lower end of the pressure rod is connected to a pressure plate assembly. A pressing cylinder is fixedly installed on the base, and a mesh cylinder is installed inside the pressing cylinder. The pressure plate assembly extends into the mesh cylinder. The lower part of the pressing cylinder has a conical structure with an opening. The pressure plate assembly includes an upper pressure plate fixedly connected to the lower end of the pressure rod, and a lower pressure plate slidably connected to the upper pressure plate. A hydraulic actuating component connects the lower pressure plate and the upper pressure plate. When the pressure plate compresses the raw material to a certain degree, a small-stroke, high-pressure hydraulic actuating component, such as a thin, flat hydraulic cylinder or a hollow hydraulic cylinder, drives the lower pressure plate to perform secondary pressing on the raw material, ensuring more thorough pressing while maintaining processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of vegetable oil pressing equipment, specifically a pressing device for processing rice bran oil. Background Technology

[0002] Cold-pressed rice bran oil is an edible oil extracted from rice bran and germ. It is rich in unsaturated fatty acids (accounting for more than 80%), vitamin E complex, and unique components such as oryzanol. The ratio of linoleic acid to oleic acid in its fatty acid composition is close to 1:1. Its nutritional components have the effects of regulating cholesterol and improving cardiovascular health. It has a smoke point of 215℃ and a digestibility rate of over 97%, making it suitable for high-temperature cooking.

[0003] The pressing and extraction process of rice bran oil requires the use of a pressing device. The pressing device used for rice bran oil processing is similar to that used for general vegetable oil pressing. For example, Chinese utility model patent CN223161415U discloses a high-efficiency peanut oil pressing device, which includes a base plate, a filter box fixedly connected to the upper end of the base plate, a pressing cylinder fixedly connected to the upper end of the filter box, a U-shaped plate fixedly connected to the upper end of the base plate, a reciprocating screw rotatably connected between the inner walls of the two sides of the U-shaped plate, a sliding plate threaded onto the reciprocating screw, a connecting rod fixedly connected to the lower end of the sliding plate, a pressure plate fixedly connected to the lower end of the connecting rod, a mesh cylinder inside the pressing cylinder, a filter plate inside the filter box, connecting plates fixedly connected to the inner walls of both sides of the filter box, and two abutment rods fixedly connected to the lower end of the filter plate, with the lower ends of the two abutment rods penetrating the corresponding connecting plates. Through the cooperation of structures such as the push rod, the second spring, and the cam, the filter plate can shake up and down, thereby preventing impurities from clogging the filter pores and improving the filtration efficiency of peanut oil.

[0004] However, in existing pressing devices, as the pressing plate moves downwards during the pressing process, the rice raw material gradually becomes compacted, and the resistance on the pressing plate also increases. When the resistance increases to a certain extent, the torque of the screw drive motor is insufficient, and the pressing plate cannot continue to press downwards, resulting in insufficient pressing of the raw material. At the same time, since the pressing plate requires a long stroke, if a large-diameter hydraulic cylinder is used directly as the driving component of the pressing plate, it will result in the pressing plate moving too slowly (under the premise that the output power of the hydraulic power source is constant), affecting the processing efficiency and increasing the cost of the equipment. Utility Model Content

[0005] This utility model proposes a pressing device for processing rice bran oil, which aims to solve the problem of insufficient pressing of rice raw materials due to insufficient driving force of the pressing plate in existing pressing equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A pressing device for processing rice bran oil includes a base, a pressing cylinder and a pressing plate assembly. A column is provided on the base, and a cross arm is slidably fitted on the upper part of the column. A screw lifting mechanism is provided between the cross arm and the column. A downwardly extending pressure rod is provided at the end of the cross arm away from the column, and the lower end of the pressure rod is connected to the pressing plate assembly. The pressing cylinder is fixedly installed on the base. The inside of the pressing cylinder is a mesh cylinder. The pressing plate assembly extends into the mesh cylinder. The lower part of the pressing cylinder has a conical structure and is provided with an opening. The pressure plate assembly includes an upper pressure plate fixedly connected to the lower end of the pressure rod, a lower pressure plate slidably connected to the upper pressure plate, and a hydraulic actuating component connecting the lower pressure plate and the upper pressure plate.

[0007] Preferably, the lead screw lifting mechanism includes a lead screw rotatably mounted on a column, a first motor connected to the upper part of the lead screw, and a nut sleeve provided on the cross arm, the nut sleeve being fitted onto the outer wall of the lead screw.

[0008] Preferably, a push rod is provided on the upper part of the lower pressure plate, the push rod passes through the upper pressure plate and slides with the upper pressure plate, and the upper end of the push rod extends out of the upper pressure plate and is connected to the hydraulic actuation component.

[0009] Preferably, a return spring is fitted on the outer wall of the push rod, and the two ends of the return spring are respectively connected to the push rod and the upper pressure plate.

[0010] Preferably, the hydraulic actuating component is a thin, flat hydraulic cylinder, the cylinder body of which is fixedly connected to the side wall of the pressure rod, and the telescopic end of which is connected to the upper part of the push rod.

[0011] Preferably, the hydraulic actuating component is a hollow hydraulic cylinder, which is fitted onto the outer wall of the pressure rod, and the upper part of the cylinder body of the hollow hydraulic cylinder is fixedly connected to the pressure rod; an annular plate is connected to the top of the push rod, and the telescopic end of the hollow hydraulic cylinder is connected to the annular plate.

[0012] Preferably, the device also includes a filtration device, which includes a filter box and a filter screen disposed below the pressing cylinder. The upper part of the filter box is provided with an oil inlet aligned with the opening of the pressing cylinder, and the bottom is provided with an oil outlet.

[0013] Preferably, the filter screen has a cylindrical structure with metal mesh on its bottom and side walls. A rotating shaft is connected to the bottom of the filter screen. The rotating shaft passes through the bottom of the filter box and is rotatably connected to the bottom of the filter box through a bearing. A second motor is connected to one end of the rotating shaft that extends out of the filter box.

[0014] Beneficial effects: Compared with the prior art, the present invention can achieve at least the following technical effects: 1. This utility model incorporates hydraulic actuators on the press plate assembly. In the initial pressing stage, where resistance is low, the screw lifting mechanism drives the press plate downwards, resulting in a faster movement speed. When the press plate compresses the raw material to a certain extent, a low-stroke, high-pressure hydraulic actuator, such as a thin, flat hydraulic cylinder or a hollow hydraulic cylinder, drives the lower press plate to perform secondary pressing on the raw material. This ensures more efficient pressing while maintaining processing efficiency.

[0015] 2. This utility model is equipped with a filtration device. The filter screen of the filtration device can rotate at high speed under the drive of a motor. Under centrifugal action, the residue and oil are separated more fully, which not only ensures the purity of rice bran oil, but also avoids waste caused by excessive oil adsorbed in the residue. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0017] Figure 2 This is a schematic diagram of the pressure plate assembly structure in Embodiment 1 of this utility model.

[0018] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0019] Figure 4 This is a schematic diagram of the pressure plate assembly structure in Embodiment 2 of this utility model.

[0020] In the diagram: 1. Base; 2. Column; 3. Control panel; 4. Pressing cylinder; 5. Screen cylinder; 6. Lead screw; 7. Cross arm; 8. First motor; 9. Nut sleeve; 10. Pressure rod; 11. Thin flat hydraulic cylinder; 12. Upper pressure plate; 13. Lower pressure plate; 14. Filter box; 15. Filter screen; 16. Oil outlet; 17. Rotary shaft; 18. Second motor; 19. Hollow hydraulic cylinder; 20. Annular plate; 21. Return spring; 22. Push rod. Detailed Implementation

[0021] The present invention will be further explained below with reference to specific implementation examples.

[0022] Example 1 Please see Figure 1-2 This utility model proposes a pressing device for processing rice bran oil, including a base 1, a pressing cylinder 4 and a pressing plate assembly. A column 2 is provided on the base 1, and a cross arm 7 is slidably fitted on the upper part of the column 2. A screw lifting mechanism is provided between the cross arm 7 and the column 2. A downwardly extending pressure rod 10 is provided at the end of the cross arm 7 away from the column 2. The lower end of the pressure rod 10 is connected to the pressing plate assembly. The pressing cylinder 4 is fixedly installed on the base 1. The inside of the pressing cylinder 4 is provided with a mesh cylinder 5. The pressing plate assembly extends into the mesh cylinder 5. The lower part of the pressing cylinder 4 has a conical structure and is provided with an opening. The pressure plate assembly includes an upper pressure plate 12 fixedly connected to the lower end of the pressure rod 10, a lower pressure plate 13 slidably connected to the upper pressure plate 12, and a hydraulic actuating component connected between the lower pressure plate 13 and the upper pressure plate 12.

[0023] like Figure 1 As shown, the raw material wrapped in filter cloth is placed in the mesh cylinder 5. The screw lifting mechanism drives the pressing plate assembly to move downward through the cross arm 7 and the pressing rod 10 to perform primary pressing on the raw material. The oil in the raw material is extracted under the squeezing action of the pressing plate assembly and flows into the bottom of the pressing cylinder 4 through the mesh holes on the side wall of the mesh cylinder 5, and flows out through the opening at the bottom of the pressing cylinder 4. like Figure 2 As shown, when the pressure plate assembly compresses the raw material to a certain extent (usually when the raw material compression rate reaches 55%~65%), the power of the screw lifting mechanism is insufficient to drive the pressure plate assembly to continue moving downward. At this time, the positions of the horizontal arm 7, the pressure rod 10, and the upper pressure plate 12 remain unchanged, and the lower pressure plate 13 is pushed downward by the hydraulic actuator with a small stroke and high pressure to perform secondary pressing on the raw material. When the hydraulic actuator reaches its maximum stroke, the lower pressure plate 13 is lifted upward to reset it, and the pressure plate assembly is driven downward by the screw lifting mechanism to make the lower surface of the lower pressure plate 13 contact the raw material. Then, the lower pressure plate 13 is pushed again by the hydraulic actuator, and so on, until the raw material is fully pressed. This ensures that the raw material is more fully pressed while maintaining the pressing efficiency.

[0024] In this embodiment, the lead screw lifting mechanism includes a lead screw 6 rotatably mounted on the column 2, a first motor 8 connected to the upper part of the lead screw 6, and a nut sleeve 9 provided on the cross arm 7, which is fitted onto the outer wall of the lead screw 6.

[0025] The first motor 8 drives the lead screw 6 to rotate. Through the threaded transmission between the nut sleeve 9 and the lead screw 6, the rotational motion of the lead screw 6 is converted into the linear motion of the horizontal arm, thereby driving the pressure plate assembly to move up and down. At the same time, the lead screw 6 and the nut sleeve 9 can achieve self-locking. When the first motor 8 is de-energized, the positions of the horizontal arm 7, the pressure rod 10 and the upper pressure plate 12 can remain unchanged.

[0026] In this embodiment, the lower pressure plate 13 is further provided with a push rod 22 on its upper part. The push rod 22 passes through the upper pressure plate 12 and slides with the upper pressure plate 12. The upper end of the push rod 22 extends out of the upper pressure plate 12 and is connected to the hydraulic actuation component.

[0027] like Figure 2As shown, the lower pressure plate 13 is movably connected to the upper pressure plate 12 via the push rod 22. The top of the push rod 22 is provided with appropriate limiting components, such as limiting baffles, so that the lower pressure plate 13 can move relative to the upper pressure plate 12 within a certain stroke.

[0028] In this embodiment, the outer wall of the push rod 22 is fitted with a return spring 21, and the two ends of the return spring 21 are respectively connected to the push rod 22 and the upper pressure plate 12.

[0029] By setting a return spring 21, when the hydraulic actuator does not provide downward pressure, the lower pressure plate 13 can automatically reset under the rebound force of the return spring 21. With the above setting, the hydraulic actuator only needs to provide downward pressure, so only a one-way drive hydraulic actuator needs to be selected, simplifying the hydraulic pipeline.

[0030] In this embodiment, the hydraulic actuating component is a thin, flat hydraulic cylinder 11. The cylinder body of the thin, flat hydraulic cylinder 11 is fixedly connected to the side wall of the pressure rod 10, and the telescopic end of the thin, flat hydraulic cylinder 11 is connected to the upper part of the push rod 22.

[0031] In this embodiment, a thin, flat hydraulic cylinder is selected as the hydraulic actuating component, such as the single-acting thin cylinder of the RLS series, which is suitable for high-pressure, short-stroke reciprocating motion. Two thin, flat hydraulic cylinders 11 are symmetrically installed on the lower part of the pressure rod 11 to ensure that the lower pressure plate 13 is subjected to balanced force.

[0032] This embodiment is further configured to include a filtration device, which includes a filter box 14 and a filter screen 15 disposed below the pressing cylinder 4. The upper part of the filter box 14 is provided with an oil inlet aligned with the opening of the pressing cylinder 4, and the bottom is provided with an oil outlet 16.

[0033] The pressed rice bran oil is filtered by a filtration device. Specifically, the oil flowing out of the opening of the pressing cylinder 4 flows through the oil inlet at the top of the filter box 14 onto the filter screen 15, filtering out solid impurities in the oil. The top cover of the filter box 14 can be designed to be removable for easy cleaning of the filter screen 15.

[0034] In this embodiment, the filter screen 15 is further configured to have a cylindrical structure, with its bottom wall and side walls being metal mesh. A rotating shaft 17 is connected to the bottom of the filter screen 15. The rotating shaft 17 passes through the bottom of the filter box 14 and is rotatably connected to the bottom of the filter box through a bearing. A second motor 18 is connected to one end of the rotating shaft 17 that extends out of the filter box 14.

[0035] The second motor 18 drives the filter screen 15 to rotate, and under centrifugal action, the residue and oil are separated more fully, which not only ensures the purity of rice bran oil, but also avoids waste caused by excessive oil adsorbed in the residue.

[0036] In this embodiment, a control panel 3 is also installed on the column 2 to facilitate the operator's control of the screw lifting mechanism, hydraulic actuation components, and filtering device.

[0037] Example 2 Based on Embodiment 1, in this embodiment, the hydraulic actuating component is a hollow hydraulic cylinder 19, which is fitted onto the outer wall of the pressure rod 10. The upper part of the cylinder body of the hollow hydraulic cylinder 19 is fixedly connected to the pressure rod 10. The top of the push rod 22 is connected to an annular plate 20, and the telescopic end of the hollow hydraulic cylinder 19 is connected to the annular plate 20.

[0038] In this embodiment, a hydraulic cylinder 19 is selected as the hydraulic actuating component, and the pressure is transmitted to the push rod 22 and the lower pressure plate 13 through the annular plate 20. Compared with embodiment 1, the push rod 22 and the lower pressure plate 13 have better force balance in this embodiment. Except for the above differences, the other settings in this embodiment are the same as in embodiment 1.

[0039] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," "left," "right," 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 this utility model and 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 this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0040] In the description of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pressing apparatus for processing rice bran oil, characterized in that, Includes a base (1), a pressing cylinder (4) and a pressing plate assembly. A column (2) is provided on the base (1). A cross arm (7) is slidably fitted on the upper part of the column (2). A screw lifting mechanism is provided between the cross arm (7) and the column (2). A downwardly extending pressure rod (10) is provided at the end of the cross arm (7) away from the column (2). The lower end of the pressure rod (10) is connected to the pressing plate assembly. The pressing cylinder (4) is fixedly installed on the base (1). The inside of the pressing cylinder (4) is provided with a mesh cylinder (5). The pressing plate assembly extends into the mesh cylinder (5). The lower part of the pressing cylinder (4) is a conical structure and has an opening. The pressure plate assembly includes an upper pressure plate (12) fixedly connected to the lower end of the pressure rod (10), a lower pressure plate (13) slidably connected to the upper pressure plate (12), and a hydraulic actuating component connected between the lower pressure plate (13) and the upper pressure plate (12).

2. The pressing apparatus for processing rice bran oil according to claim 1, characterized in that, The lead screw lifting mechanism includes a lead screw (6) rotatably mounted on a column (2), a first motor (8) connected to the upper part of the lead screw (6), and a nut sleeve (9) provided on the cross arm (7), which is fitted onto the outer wall of the lead screw (6).

3. The pressing apparatus for processing rice bran oil according to claim 1, characterized in that, A push rod (22) is provided on the upper part of the lower pressure plate (13). The push rod (22) passes through the upper pressure plate (12) and slides with the upper pressure plate (12). The upper end of the push rod (22) extends out of the upper pressure plate (12) and is connected to the hydraulic actuation component.

4. The pressing apparatus for processing rice bran oil according to claim 3, characterized in that, The outer wall of the push rod (22) is fitted with a return spring (21), and the two ends of the return spring (21) are connected to the push rod (22) and the upper pressure plate (12) respectively.

5. A pressing apparatus for processing rice bran oil according to claim 3 or 4, characterized in that, The hydraulic actuator is a thin flat hydraulic cylinder (11). The cylinder body of the thin flat hydraulic cylinder (11) is fixedly connected to the side wall of the pressure rod (10), and the telescopic end of the thin flat hydraulic cylinder (11) is connected to the upper part of the push rod (22).

6. A pressing apparatus for processing rice bran oil according to claim 3 or 4, characterized in that, The hydraulic actuator is a hollow hydraulic cylinder (19), which is fitted on the outer wall of the pressure rod (10). The upper part of the cylinder body of the hollow hydraulic cylinder (19) is fixedly connected to the pressure rod (10). The top of the push rod (22) is connected to an annular plate (20), and the telescopic end of the hollow hydraulic cylinder (19) is connected to the annular plate (20).

7. A pressing apparatus for processing rice bran oil according to any one of claims 1-4, characterized in that, It also includes a filtration device, which includes a filter box (14) and a filter screen (15) located below the pressing cylinder (4). The upper part of the filter box (14) is provided with an oil inlet aligned with the opening of the pressing cylinder (4), and the bottom is provided with an oil outlet (16).

8. A pressing apparatus for processing rice bran oil according to claim 7, characterized in that, The filter screen (15) is a cylindrical structure with metal mesh on its bottom and side walls. A rotating shaft (17) is connected to the bottom of the filter screen (15). The rotating shaft (17) passes through the bottom of the filter box (14) and is rotatably connected to the bottom of the filter box through a bearing. A second motor (18) is connected to one end of the rotating shaft (17) that extends out of the filter box (14).

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