A multi-stage extrusion structure that is easy to disassemble

Abstract

This utility model belongs to the technical field of oil presses, and specifically relates to a multi-stage pressing structure that is easy to disassemble. It includes several unit pressings that are detachably connected in sequence. Each unit pressing has a variable-diameter bushing detachably connected to its end. The inner diameter of the variable-diameter bushing is smaller than the inner diameter of the corresponding unit pressing at that point. This utility model provides a multi-stage pressing structure that is easy to disassemble. Compared with traditional multi-stage pressing structures, it can achieve true multi-stage pressing, effectively improving oil pressing efficiency, saving labor and electricity, increasing output per unit time, and saving costs to a certain extent. Furthermore, the detachable connection between the unit pressings, combined with the detachable connection of the variable-diameter bushing, facilitates the disassembly of the pressing units, especially the pressing shaft, making it very convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil press machines, and specifically relates to a multi-stage pressing and extrusion structure that is easy to disassemble. Background Technology

[0002] An oil press is a device used to extract oil from plant seeds or nuts, and is widely used in household and industrial production; it separates the oil from the raw materials through physical pressing. A multi-stage oil press is a common type of oil press. It generally includes a pressing chamber and a multi-stage pressing shaft. Each stage of the pressing shaft includes a feeding section and a pressing section. Currently, the pressing chambers of traditional multi-stage oil presses are generally of standard diameter (that is, although there are multiple pressing sections on the multi-stage pressing shaft, the corresponding positions of the pressing chambers are generally not equipped with a variable diameter structure, but only a variable diameter pressing head is set at the end of the pressing chamber). Therefore, this structure has a drawback: its multi-stage oil pressing effect is not improved much. Currently, existing technologies also include structures with corresponding strain diameters in the pressing chamber, such as patent CN218985854U, which describes a multi-stage pressing body for an oil press. This body includes a multi-stage pressing cage and a multi-stage spiral shaft rotatably arranged coaxially within it. One end of the multi-stage pressing cage has a feed inlet perpendicularly arranged radially, and the other end has an outlet arranged axially. The multi-stage spiral shaft has multiple pressing sections, each composed of a spiral feeding section connected to an extrusion section. From the feed inlet to the outlet, the maximum outer diameter of the spiral feeding section and extrusion section of the same stage is the same, while the maximum outer diameter of the spiral feeding section and extrusion section of different stages decreases progressively. The pitch of the subsequent spiral feeding section is not less than the pitch of the preceding spiral feeding section.

[0003] While the above structure can significantly improve the oil pressing effect and efficiency, and also save energy, it has a major drawback: once assembled, how to disassemble the press shaft is a big problem, because the press shaft needs frequent cleaning and maintenance during daily use. Utility Model Content

[0004] This invention provides a multi-stage extrusion structure that is easy to disassemble, which can solve the problems pointed out in the background art.

[0005] A multi-stage extrusion structure that is easy to disassemble includes several unit extrusions that are detachably connected in sequence. Each unit extrusion is detachably connected to a variable diameter bushing at its end. The inner diameter of the variable diameter bushing is smaller than the inner diameter of the corresponding unit extrusion at that point.

[0006] Preferably, the end of the unit pressing mill is provided with an embedded limiting groove, and the variable diameter bushing is embedded and connected in the embedded limiting groove.

[0007] Preferably, the inner diameter of the variable diameter bushing is 1-3 cm smaller than the inner diameter of the corresponding unit pressing tool at this point.

[0008] Preferably, the variable diameter bushing is position-locked by a locking element.

[0009] Preferably, the locking element is a fixing pin, and the variable diameter bushing has a pin groove at a corresponding position that cooperates with the fixing pin.

[0010] Preferably, at least one side of the variable diameter bushing is provided with a guide bevel.

[0011] Preferably, the unit pressing plates are detachably connected via flanges.

[0012] Preferably, the flange has a stepped positioning structure.

[0013] Beneficial effects: This utility model provides a multi-stage pressing structure that is easy to disassemble; compared with the traditional multi-stage pressing structure, it can achieve true multi-stage pressing, effectively improve oil pressing efficiency, save labor and electricity, increase output per unit time, and save costs to a certain extent; and the detachable connection between the unit pressing sections, combined with the detachable connection of the variable diameter bushing, facilitates the disassembly of the pressing section, especially the disassembly of the pressing shaft, which is very convenient. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention. Figure 2 This is a schematic diagram of the structure of the unit pressing boring machine of this utility model. Figure 3 This is a schematic diagram of the structure of the unit variable diameter bushing of this utility model. Explanation of reference numerals in the attached figures: The following are the labels in the diagram: Unit pressing boring bar 1; Variable diameter bushing 2; Pin groove 21; Guide bevel 22; Embedded limiting groove 3; Locking part 4; Flange 5; Stepped positioning structure 6; Multi-stage pressing shaft 7; Extrusion section 71. Detailed Implementation

[0015] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0016] Example 1: As Figure 1-3As shown in the figure, the present invention provides a multi-stage pressing structure that is easy to disassemble, comprising several unit pressings 1 that are detachably connected in sequence. The several unit pressings 1 form a pressing assembly. The pressing assembly is fitted with a multi-stage pressing shaft 7. Each unit pressing 1 has a variable diameter bushing 2 that can be detachably connected to its end. The variable diameter bushing 2 is configured to correspond one-to-one with the pressing part 71 of the multi-stage pressing shaft 7. The variable diameter bushing 2 can be made of high-strength steel, such as chromium steel. The inner diameter of the variable diameter bushing 2 is smaller than the inner diameter of the corresponding unit pressing 1 at this point.

[0017] Specifically, the unit pressing 1 is detachably connected by a flange 5, and the flange 5 has a stepped positioning structure 6.

[0018] The end of the unit pressing 1 is provided with an embedded limiting groove 3, and the variable diameter bushing 2 is embedded and connected in the embedded limiting groove 3. The inner diameter of the variable diameter bushing 2 is 1-3cm smaller than the inner diameter of the corresponding unit pressing 1 at this point.

[0019] In some instances, to ensure the stability of the variable diameter bushing 2 and prevent its rotation, the variable diameter bushing 2 is locked in position by a locking member 4, which is a fixing pin. The variable diameter bushing 2 is provided with a pin groove 21 that cooperates with the fixing pin at a corresponding position. At least one side of the variable diameter bushing 2 is provided with a guide bevel 22.

[0020] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A multi-stage extrusion structure with easy disassembly, characterized in that: It includes several unit presses (1) that can be detachably connected in sequence. Each unit press (1) has a variable diameter bushing (2) that can be detachably connected to its end. The inner diameter of the variable diameter bushing (2) is smaller than the inner diameter of the corresponding unit press (1) at this point.

2. A multi-stage extrusion structure according to claim 1, wherein: The end of the unit press (1) is provided with an embedded limiting groove (3), and the variable diameter bushing (2) is embedded and connected in the embedded limiting groove (3).

3. A multi-stage extrusion structure according to claim 2, wherein: The inner diameter of the variable diameter bushing (2) is 1-3 cm smaller than the inner diameter of the corresponding unit boring (1).

4. A multi-stage extrusion structure according to claim 2, wherein: The variable diameter bushing (2) is locked in position by the locking member (4).

5. A multi-stage extrusion structure according to claim 4, wherein: The locking element (4) is a fixing pin, and the variable diameter bushing (2) has a corresponding groove (21) that cooperates with the fixing pin.

6. A multi-stage extrusion structure according to claim 2, wherein: The variable diameter bushing (2) has a guide bevel (22) on at least one side.

7. A multi-stage extrusion structure according to any one of claims 1 to 6, wherein: The unit pressing (1) is detachably connected to each other via flange (5).

8. A multi-stage extrusion structure according to claim 7, wherein: The flange (5) has a stepped positioning structure (6).

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