Combined inner container of zanthoxylum oil supercritical extraction tower

Abstract

The invention discloses a combined inner container of a zanthoxylum oil supercritical extraction tower, and aims to provide a zanthoxylum oil supercritical extraction tower which is simple in structure, convenient in material replacement and good in extraction effect. The device comprises an inner container positioned in a tower body, the inner container is of a combined structure formed by stacking a plurality of material baskets (3). Each material basket (3) is composed of a basket body (3-3) and a basket cover (3-2), wherein a plurality of meshes are distributed in the surface of the basket body (3-3), the basket cover (3-2) closes an upper end opening of the basket body, and a plurality of meshes are distributed in the surface of the basket cover (3-2). The bottom of each basket body (3-3) is of an inverted conical surface structure, and a sealing ring (4) is fixed on the outer circumferential surface of each basket body (3); and an annular support frame (3-1) is fixed on the surface of the basket cover (3-2). The plant height does not need to be increased, the installation and use cost is low, loading and unloading are convenient, the extraction effect is good, and materials are not deposited and hardened. The improved structure of the liner of the zanthoxylum oil supercritical extraction tower is provided.

Description

Technical Field

[0001] The invention relates to a supercritical extraction tower, in particular to a combined inner liner of a supercritical extraction tower for pepper oil, belonging to food processing machinery. Background Art

[0002] Supercritical extraction has many characteristics such as being green, environmentally friendly, low-cost, and easy to implement. It is one of the important methods for extracting oils. At present, most of the supercritical towers (kettles) used in industry are bottom-in-top-out or top-in-bottom-out structures. The extraction tower usually consists of a tower body and an inner tank with several mesh holes distributed on the surface and located in the tower body. In order to improve the extraction efficiency and reduce the floor space, the usual practice is to increase the volume of the tower body by increasing the height of the extraction tower. In order to facilitate the removal of the inner tank from the top of the tower body, it is necessary to reserve some operating space above the extraction kettle to facilitate the lifting and removal of the inner tank, so the construction height of the plant must be increased. There are the following defects: 1) It not only increases the cost of plant construction, but also requires the use of lifting equipment to remove or lift the liner.

[0003] 2) Not only does the inner tank have a large length and heavy weight, loading and unloading require the help of lifting equipment, which is costly and inconvenient to operate; it is also easy to cause the material to become compacted due to its heavy weight, affecting the extraction effect and low oil yield.

[0004] 3) If the material has a high oil content and a large packing density, the extraction medium will easily form obvious channel flow when flowing through the raw material, resulting in uneven flow distribution of the extraction medium, dead corners of extraction, slow extraction speed, uneven extraction, and incomplete extraction.

[0005] In view of the above-mentioned defects existing in the prior art, the present invention aims to provide a combined inner tank of a supercritical extraction tower for pepper oil with simple structure, convenient material replacement and good extraction effect.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: it includes an inner liner positioned in a tower body; it is characterized in that: the inner liner is a combined structure formed by stacking a plurality of material baskets, each material basket is composed of a basket body with a plurality of mesh holes distributed on the surface, and a basket cover with a plurality of mesh holes distributed on the surface of the basket body and closing the upper port of the basket body; the bottom of each basket body is an inverted cone structure, and a sealing ring is fixed on the outer circumferential surface of each material basket; and a circular ring-shaped support frame is fixed on the surface of the basket cover.

[0007] In the above technical solution, the central position of the inverted cone surface has a cavity which is protruding upward and has a cylindrical structure and a closed upper end, and a plurality of mesh holes are distributed on the cavity wall.

[0008] In the above technical solution, a cavity protruding upwards and having a conical cylindrical structure and a closed upper end is provided at the central position of the inverted conical surface, and a plurality of mesh holes are distributed on the cavity wall.

[0009] In the above technical solution, the surface of the basket cover is an inverted cone structure.

[0010] Compared with the prior art, the present invention changes the original integral liner into a segmented combined structure formed by stacking multiple baskets, thus having at least the following advantages: 1) The baskets can be taken out or put in one by one without increasing the height of the plant, which can avoid plant reconstruction and save the installation of lifting equipment, greatly reducing the installation and use costs of the extraction equipment.

[0011] 2) Since the basket shaft height is small and light, loading and unloading are also convenient without the need for lifting equipment.

[0012] 3) Since the height of each basket shaft is small and the filled material is light, it will not cause the bottom material to settle and harden, thereby improving the extraction effect.

[0013] 4) The bottom of the basket and the surface of the basket cover are both conical structures, which can not only increase the contact area between the material and the extractant and improve the extraction effect, but also ensure the stability of the stacking between the baskets and avoid instability due to misalignment.

[0014] 5) A cavity with mesh holes is provided at the central position of the bottom of the conical surface of the basket, thereby further increasing the contact area between the extractant and the material, further reducing the generation of channeling, and improving the extraction effect.

[0015] 6) Adding a support frame on the surface of the basket cover can form a buffer zone between two adjacent baskets. After passing through the lower basket, the extractant can be redistributed in the buffer zone before entering the upper basket, so that the extractant is redistributed (from linear flow to laminar flow) before entering the upper basket, thereby avoiding the phenomenon of channel flow caused by the extractant directly flowing into the upper basket in the form of various flow paths and flow rates before entering the upper basket, effectively improving the extraction uniformity and extraction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 Schematic diagram of the structure of the middle material basket; Figure 3 yes Figure 1 Another structural schematic diagram of the middle material basket.

[0017] In the figure: tower cover 1, tower body 2, material basket 3, support frame 3-1, basket cover 3-2, basket body 3-3, cavity 3-4, sealing ring 4, positioning ring 5. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Example 1

[0019] like Figures 1-2 As shown: The present invention is composed of an inner liner positioned in a tower body. The tower body is composed of a tower body 2 with an open top and a tower cover 1 that can be opened and sealed on the top of the tower body. A positioning ring 5 is welded inside the tower body 2. The inner liner is a combined structure formed by stacking multiple baskets 3. Each basket 3 is composed of a basket body 3-3 with a plurality of mesh holes (marked in the figure) distributed on the surface, and a basket cover 3-2 with a plurality of mesh holes distributed on the surface of the basket body closed. The bottom of each basket body 3-3 is an inverted cone structure with a large top and a small bottom. A sealing ring 4 is fixed on the outer circumference of each basket 3; a circular support frame 3-1 is fixed on the surface of the basket cover 3-2. The combined inner liner formed by stacking multiple baskets 3 is placed on the positioning ring 5. The support frame 3-1 is convenient for the operator to grab the basket 3 using tools such as hooks, and can also form a certain gap between each adjacent basket 3 to facilitate the circulation of the extractant. The outer diameter of the sealing ring 4 is compatible with the inner diameter of the tower body 2. Example 2

[0020] In order to increase the contact area between the material and the extractant, based on Example 1, the present invention can also adopt the following method: Figure 2-3 The structure shown is as follows: a cavity 3-4 protruding upwards and in a cylindrical structure or a cavity 3-4 in a cone-shaped structure with a small top and a large bottom is welded at the center of the inverted cone surface of the basket body 3-3. The upper end of the cavity 3-4 is closed, and a plurality of mesh holes (marked in the figure) are distributed on the cavity wall.

[0021] In order to prevent the lower end surface of the basket body 3-3 from touching the basket cover 3-2 and causing interference, the surface of the basket cover 3-1 also adopts an inverted cone structure with a larger upper portion and a smaller lower portion.

[0022] When in use, the baskets 3 filled with pepper powder are placed one by one in the tower body 2 in a stacked manner using a hook or other tool, and the tower cover 1 is closed, and the pepper powder can be subjected to supercritical extraction according to a conventional method. After the extraction is completed, the baskets 3 are taken out of the tower body one by one using a hook or other tool to perform a material replacement operation.

Claims

1. A combined liner for a supercritical extraction tower of pepper oil, comprising an liner positioned in a tower body; characterized in that: The liner is a combined structure formed by stacking a plurality of material baskets (3), each material basket (3) comprising a basket body (3-3) with a plurality of mesh holes distributed on the surface, and a basket cover (3-2) closing an upper port of the basket body and with a plurality of mesh holes distributed on the surface; the bottom of each basket body (3-3) is an inverted conical structure, and a sealing ring (4) is fixed on the outer circumferential surface of each material basket (3); and a circular support frame (3-1) is fixed on the surface of the basket cover (3-2).

2. The combined inner tank of the supercritical extraction tower for pepper oil according to claim 1, characterized in that: A cavity (3-4) which is protruding upwards and has a cylindrical structure and a closed upper end is provided at the central position of the inverted cone surface, and a plurality of mesh holes are distributed on the cavity wall.

3. The combined inner tank of the supercritical extraction tower of pepper oil according to claim 1, characterized in that: A cavity (3-4) is provided at the central position of the inverted conical surface and is convex upwards and has a conical cylindrical structure with a closed upper end, and a plurality of mesh holes are distributed on the cavity wall.

4. The combined inner container of the supercritical extraction tower for pepper oil according to any one of claims 1 to 3, characterized in that: The surface of the basket cover (3-1) is in an inverted cone structure.

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