Split type extraction kettle for traditional Chinese medicine supercritical extraction method

Abstract

The utility model provides a split type extraction kettle for a traditional Chinese medicine supercritical extraction method, and belongs to the field of supercritical extraction. The problems that a traditional extraction kettle is large in dead weight, small in material strength exerting coefficient, poor in anti-fatigue performance and high in manufacturing and machining cost, and the metal machining requirement is high when integrated forming is adopted are solved. The utility model discloses a split-type composite lining structure which comprises an outer layer structure layer and a split-type composite lining structure layer, the outer layer structure layer wraps the outer side of the split-type composite lining structure layer, the split-type composite lining structure layer comprises a straight cylinder section lining and two end sockets, and the two end sockets are symmetrically arranged at the two ends of the straight cylinder section lining. The opening ends of the two end sockets are connected with the two ends of the straight cylinder section lining in a matched mode respectively. The method is mainly used for supercritical extraction of traditional Chinese medicines.

Description

Technical Field

[0001] The utility model belongs to the technical field of supercritical extraction, in particular to a split extraction kettle used for supercritical extraction of traditional Chinese medicine. Background Art

[0002] Compared with traditional Chinese medicine extraction methods, the biggest advantage of supercritical extraction method is that it can be extracted and separated under near-room temperature conditions, can accurately extract the required effective components, and almost retain all the effective ingredients in the product without any organic solvent residue. The product purity is very high, the operation is simple, fast, energy-saving, and various process parameters are easy to control. It is currently the most advanced method.

[0003] Supercritical extraction has a smaller polarity, so for substances with high polarity and a molecular weight of more than 500, a supercritical extraction device is required to extract under high pressure. Among them, the extraction kettle is the main high-pressure equipment in the supercritical extraction device. The traditional extraction kettle is made of high-strength alloy steel or high-strength titanium alloy, with a wall thickness of 5-10mm and a large weight. Since the metal is an isotropic material, the circumferential stress is twice the axial stress when it is used as a high-pressure container, and the material strength coefficient is small. In addition, since the extraction kettle is used frequently as a high-pressure equipment, the fatigue performance of metal equipment such as welding and casting is poor due to the molding process. High-strength alloy steel and titanium alloy are used as raw materials, and the manufacturing and processing costs are extremely high. In addition, the extraction kettle is large in size, and high metal processing requirements are required when one-piece molding is used. Utility Model Content

[0004] In view of this, the utility model aims to propose a split extraction kettle for supercritical extraction of traditional Chinese medicine, so as to solve the problems of heavy weight of traditional extraction kettle, small material strength utilization coefficient, poor fatigue resistance, high manufacturing and processing costs, and high metal processing requirements when one-piece molding is used.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a split extraction kettle for supercritical extraction of traditional Chinese medicine, which includes an outer structural layer and a lining split combined structural layer, the outer structural layer is wrapped on the outside of the lining split combined structural layer, the lining split combined structural layer includes a straight cylinder section liner and two heads, the two heads are symmetrically arranged at the two ends of the straight cylinder section liner, and the open ends of the two heads are respectively matched and connected with the two ends of the straight cylinder section liner.

[0006] Furthermore, the sealing head is semi-ellipsoidal, and a first L-shaped groove is provided at the interface end of the sealing head.

[0007] Furthermore, the interface ends at both ends of the straight tube section liner are provided with second L-shaped grooves that match the first L-shaped grooves at the interface end of the head.

[0008] Furthermore, one end of the sealing head is provided with an opening, and the opening is plugged with an extraction kettle plug, the inner part of the plug is matched with the sealing head, and the outer part is matched with the outer structural layer.

[0009] Furthermore, the material of the outer structural layer is a resin-based fiber composite material.

[0010] Furthermore, the material of the lining split combined structure layer is metal material.

[0011] Furthermore, the thickness of the liner split combined structure is between 1.5 mm and 2 mm.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The outer structural layer of the utility model adopts resin-based fiber composite materials. Through simulation design and process design, the hoop stress of the extraction kettle can be consistent with the axial stress when the extraction kettle is loaded, so as to give full play to the strength of the material and greatly reduce the dead weight of the extraction kettle. It is easy to use, easy to install, low in maintenance cost, and reliable in safety performance.

[0014] 2. The utility model is provided with a split-type combined structural layer of the liner. The liner of the extraction kettle adopts a split structure. During molding, the straight-tube liner and the two heads are combined together, and a composite material structural layer is wrapped around the outside. This eliminates the need for welding at the split-type segments. The lightweight and high-strength properties of the fiber are utilized to reduce the overall weight of the extraction kettle, and a sealing effect is achieved at the joints. Compared with the traditional one-piece metal extraction kettle, it is easier to process, has a smaller dead weight, has lower manufacturing and processing costs, and is easier to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0016] Figure 1 It is a cross-sectional schematic diagram of the overall structure of a split-type extraction kettle used for supercritical extraction of traditional Chinese medicine described in the utility model;

[0017] Figure 2 It is a schematic cross-sectional view of the structure of the split-type combined structural layer of the inner lining of a split-type extraction kettle used for supercritical extraction of traditional Chinese medicines described in the utility model;

[0018] Figure 3 It is a split cross-sectional schematic diagram of each structure of the split combined structural layer of the liner of a split extraction kettle used for supercritical extraction of traditional Chinese medicine described in the utility model;

[0019] Figure 4It is a cross-sectional schematic diagram of the connection between the inner lining split composite structure layer of the split extraction kettle used for supercritical extraction of traditional Chinese medicine described in the utility model and the winding connection shaft of the winding machine;

[0020] Figure 5 It is a schematic diagram of the fiber winding direction on the outer side of the inner lining of the straight cylinder section in a split extraction kettle used for supercritical extraction of traditional Chinese medicine described in the utility model;

[0021] Figure 6 It is a schematic diagram of the fiber winding direction outside the head in a split extraction kettle used for supercritical extraction of traditional Chinese medicine described in the utility model;

[0022] 1-outer structural layer, 2-straight section lining, 3-end cap, 4-extraction kettle plug, 5-first L-shaped groove, 6-second L-shaped groove, 7-winding connecting shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely explain the technical solutions in the embodiments of the utility model. It should be noted that the embodiments and features in the embodiments of the utility model can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0024] See also Figure 1-6 The present embodiment is described as a split type extraction kettle for supercritical extraction of traditional Chinese medicine, which comprises an outer structure layer 1 and an inner liner split type composite structure layer, wherein the outer structure layer 1 is wrapped around the outer side of the inner liner split type composite structure layer, wherein the inner liner split type composite structure layer comprises a straight cylinder section liner 2 and two end caps 3, wherein the two end caps 3 are symmetrically arranged at the two ends of the straight cylinder section liner 2, and the open ends of the two end caps 3 are respectively connected with the two ends of the straight cylinder section liner 2 in cooperation, wherein the material of the outer structure layer 1 in the present embodiment is a resin-based fiber composite material, wherein the outer structure layer 1 in the present embodiment adopts a resin-based fiber composite material, and through simulation design and process design, the extraction When the kettle is loaded, the hoop stress is consistent with the axial stress, which gives full play to the strength of the material and greatly reduces the deadweight of the extraction kettle. It is easy to use, easy to install, low in maintenance cost, and reliable in safety performance. A liner split combined structure layer is provided. The liner of the extraction kettle adopts a split structure, and the straight cylinder section liner 2 and the two heads 3 are combined together during molding, and the composite material is wrapped outside to form an outer structure layer 1, thereby eliminating the welding at the split segment. The lightweight and high-strength performance of the fiber is used to reduce the overall weight of the extraction kettle, and a sealing effect is achieved at the joint. Compared with the traditional one-piece metal extraction kettle, it is easier to process, has a small deadweight, and has low manufacturing and processing costs, and is easy to install.

[0025] Resin-based fiber composite materials have been widely used in aviation, aerospace, shipbuilding, rockets and other fields. Compared with traditional metal materials, fiber composite materials have high specific strength, high specific stiffness, good fatigue performance and strong impact resistance. The fiber composite materials are used to prepare high-pressure containers in the extraction kettle of the extraction method. Through simulation design and process design, the hoop stress and axial stress of the high-pressure container can be consistent when loaded, giving full play to the material strength, and greatly reducing the weight of the extraction kettle. It is easy to use, easy to install, low maintenance cost and reliable safety performance.

[0026] In this embodiment, the head 3 is a semi-ellipsoid, wherein the ratio of the long diameter to the short diameter of the semi-ellipsoid is between 1.2 and 1.3, the interface end of the head 3 is provided with a first L-shaped groove 5, and the interface ends of both ends of the straight tube section liner 2 are provided with a second L-shaped groove 6 that matches the first L-shaped groove 5 of the interface end of the head 3, and the connection between the head 3 and the straight tube section liner 2 is achieved through the cooperation between the first L-shaped groove 5 and the second L-shaped groove 6. In addition, the outer layer is wrapped with fiber winding and resin material, which eliminates the welding of the split segment and ensures the sealing of the connection between the first L-shaped groove 5 and the second L-shaped groove 6.

[0027] In this embodiment, one end of the head 3 is provided with an opening, and an extraction kettle plug 4 is inserted and matched at the opening. The inner part of the plug is matched with the head 3, and the outer part is matched with the outer structural layer 1. The extraction kettle plug 4 is used for sealing inside the extraction kettle cavity and for connecting the winding shaft 7.

[0028] The material of the lining split composite structure layer in the present embodiment is metal material, and the thickness of the lining split composite structure is between 1.5mm and 2mm. The material of the lining split composite structure layer in the present embodiment is a thin steel plate with a thickness of 1.5mm to 2mm. Different types of metal materials can also be selected according to actual needs. The thickness of the lining split composite structure layer can be adaptively adjusted according to actual needs.

[0029] In this embodiment, the straight cylinder section liner 2 and the two heads 3 are first assembled and connected through the first L-shaped groove 5 and the second L-shaped groove 6 to form a liner split combined structure layer, and the extraction kettle plugs 4 are installed at both ends of the liner split combined structure layer, and the winding connecting shafts 7 are installed at both ends of the liner split combined structure layer, and are placed on a winding machine to prepare for winding process molding.

[0030] Each split head 3 is in a tight fit under the pre-tightening force of the winding connecting shaft 7, eliminating the need for welding at the split segment. Matrix resin is applied to the outer surface of the lining split composite structure layer and winding begins.

[0031] Since the outer contour of the extraction kettle is the straight line segment of the straight cylinder liner 2 and the semi-ellipsoidal shape of the heads on both sides, the circumference of the extraction kettle is defined as the annular direction and the length direction is the axial direction. The fiber winding angle and winding thickness of the straight cylinder liner 2 are equal and uniform. Therefore, the fiber winding direction of the straight cylinder liner 2 is as follows: Figure 5 As shown, in the semi-ellipsoidal head 3, the annular fibers can ensure the consistency of the winding angle and winding thickness, but the axial fibers, as the radius of the ellipsoidal head decreases, the winding angle gradually increases, and the skin thickness also gradually increases, that is, the winding in the ellipsoidal head is a variable angle and variable thickness winding, so the fiber winding direction of the head 3 is as follows Figure 6 As shown, Figure 5 and Figure 6 The direction of the arrow is the direction of fiber winding.

[0032] After the fiber winding is completed, the device is pushed into the curing furnace for rotation and curing to ensure that the resin content on the product surface is uniform. After curing, the outer structure layer 1 is formed, the tooling winding shaft 7 and plugs on both sides are removed, and the burrs and resin layer on the product surface are trimmed, and the extraction kettle is formed.

[0033] The embodiments of the utility model disclosed above are only used to help explain the utility model. The embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.

Claims

1. A split extraction kettle for supercritical extraction of traditional Chinese medicine, characterized in that: It comprises an outer structural layer (1) and an inner lining split composite structural layer, wherein the outer structural layer (1) is wrapped around the outer side of the inner lining split composite structural layer, and the inner lining split composite structural layer comprises a straight-tube segment inner lining (2) and two end caps (3), wherein the two end caps (3) are symmetrically arranged at two ends of the straight-tube segment inner lining (2), and the opening ends of the two end caps (3) are respectively matched and connected with the two ends of the straight-tube segment inner lining (2).

2. A split extraction kettle for supercritical extraction of traditional Chinese medicine according to claim 1, characterized in that: The sealing head (3) is semi-ellipsoidal in shape, and a first L-shaped groove (5) is provided at the interface end of the sealing head (3).

3. A split extraction kettle for supercritical extraction of traditional Chinese medicine according to claim 2, characterized in that: The interface ends at both ends of the straight section liner (2) are provided with second L-shaped grooves (6) that match the first L-shaped grooves (5) at the interface end of the head (3).

4. A split extraction kettle for supercritical extraction of traditional Chinese medicine according to claim 1, characterized in that: One end of the sealing head (3) is provided with an opening, and an extraction kettle plug (4) is plugged into the opening; the inner part of the plug is matched with the sealing head (3), and the outer part is matched with the outer structural layer (1).

5. A split extraction kettle for supercritical extraction of traditional Chinese medicine according to claim 1, characterized in that: The material of the outer structural layer (1) is a resin-based fiber composite material.

6. A split extraction kettle for supercritical extraction of traditional Chinese medicine according to claim 1, characterized in that: The material of the lining split type combined structure layer is metal material.

7. A split extraction kettle for supercritical extraction of traditional Chinese medicine according to claim 6, characterized in that: The thickness of the liner split combined structure is between 1.5 mm and 2 mm.

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