Spice counter-current extractor

Abstract

The utility model discloses a spice counter-current extractor which comprises an extraction barrel assembly, the extraction barrel assembly comprises a plurality of extraction barrels which are connected in sequence, and the adjacent extraction barrels are connected in a sealed mode. Each extraction barrel is in a hollow barrel shape, a spiral shaft is coaxially arranged in each extraction barrel, and the spiral shafts in the adjacent extraction barrels are in spline connection; the spiral shaft is used for driving spices in the extraction barrel to move forwards through blades of the spiral shaft; a feed port is formed in the front end of the extraction barrel assembly, and a discharge port is formed in the rear end; the rear end of the extraction barrel assembly is provided with a solvent inlet, and the front end is provided with a solvent outlet; the screw shaft is connected with a motor; a plurality of extraction barrels are mutually connected to form the extraction barrel assembly, spices and an extraction solvent continuously enter from the front end and the rear end respectively, the spices are driven by a spiral shaft to move forwards, the extraction solvent flows backwards, the spices and the extraction solvent form a countercurrent potential, continuous extraction of spice essential oil is completed, the cleaning time of an extraction container is shortened, and the extraction efficiency is improved. Yield increase and efficiency improvement are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of extraction equipment, and particularly relates to a countercurrent extractor for spices. Background Art

[0002] Spice extraction equipment is used to extract spice essential oil from spices. The commonly used spice extraction equipment is an extraction kettle. During specific operation, spice powder and an extraction solvent are added to the extraction kettle, and then certain process conditions are achieved inside the extraction kettle (such as reaching the extraction temperature and meeting the extraction duration, etc.). After the extraction is completed, a mixed solution containing spice essential oil and spice residue are respectively taken out from the extraction kettle, and then the spice essential oil is extracted from the mixed solution.

[0003] The above extraction method is usually restricted by the extraction method of the extraction kettle. After the extraction process is completed, the extraction kettle needs to be cleaned, which consumes cleaning time and is not conducive to increasing efficiency and production. Content of the Utility Model

[0004] The purpose of the utility model is to provide a countercurrent extractor for spices, which can achieve continuous feeding and continuous extraction.

[0005] The utility model adopts the following technical scheme: A countercurrent extractor for spices, including an extraction barrel assembly. The extraction barrel assembly includes a plurality of extraction barrels connected in sequence, and adjacent extraction barrels are hermetically connected;

[0006] Each extraction barrel is a hollow barrel shape, and a spiral shaft is coaxially arranged inside it. The spiral shafts in adjacent extraction barrels are spline-connected; the spiral shaft is used to drive the spices in the extraction barrel to move forward through its blades;

[0007] The front end of the extraction barrel assembly is provided with a feed inlet, and the rear end is provided with a discharge outlet;

[0008] The rear end of the extraction barrel assembly is provided with a solvent inlet, and the front end is provided with a solvent outlet;

[0009] The spiral shaft is connected to a motor.

[0010] Furthermore, a support frame for supporting the spiral shaft is installed inside the extraction barrel.

[0011] Furthermore, the spiral shaft includes a shaft body and spiral blades arranged around the outer periphery of the shaft body. There is a gap between the outer periphery of the spiral blades and the inner wall of the extraction barrel.

[0012] Furthermore, filter holes are provided on the spiral blades.

[0013] Further, a first connecting spline is provided at the front end of the spiral shaft, and a second connecting spline is provided at the rear end of the spiral shaft. The first connecting spline and the second connecting spline are used to cooperate with each other to realize the transmission between adjacent spiral shafts.

[0014] Further, the support frame includes a support rod arranged radially along the extraction barrel. A limiting through hole for the spiral shaft or the first connecting spline to pass through is provided in the middle of the support rod.

[0015] The beneficial effects of the present utility model are as follows: By connecting several extraction barrels to form an extraction barrel assembly, and continuously feeding the spice and the extraction solvent into the front and rear ends respectively, the spice is driven by the spiral shaft to move forward, and the extraction solvent flows backward, forming a countercurrent trend between the two, completing the continuous extraction of spice essential oil, reducing the cleaning time of the extraction container, and being beneficial to increasing production and improving efficiency. Description of the Drawings

[0016] Figure 1 It is a schematic cross-sectional structure diagram of the extraction barrel in the embodiment of the present utility model;

[0017] Figure 2 It is a schematic connection structure diagram of adjacent extraction barrels in the embodiment of the present utility model;

[0018] Figure 3 It is a schematic structure diagram of the extraction barrel in the embodiment of the present utility model;

[0019] Figure 4 It is a schematic structure diagram of the extractor in the embodiment of the present utility model.

[0020] Wherein: 10. Extraction barrel; 20. Support frame; 30. First flange; 40. Second flange; 50. Spiral shaft; 60. First connecting spline; 70. Second connecting spline; 80. Feed inlet; 90. Discharge outlet; 100. Motor. Detailed Embodiments

[0021] The present utility model will be described in detail below in conjunction with the drawings and specific embodiments.

[0022] The present utility model discloses a spice countercurrent extractor, as Figure 4 shown, which includes an extraction barrel assembly. The extraction barrel assembly includes several extraction barrels 10 connected in sequence, and adjacent extraction barrels 10 are hermetically connected; each extraction barrel 10 is a hollow barrel shape, and a spiral shaft 50 is coaxially arranged therein. The spiral shafts 50 in adjacent extraction barrels 10 are spline-connected; the spiral shaft 50 is used to drive the spice in the extraction barrel 10 to move forward through its blades; a feed inlet 80 is provided at the front end of the extraction barrel assembly, and a discharge outlet 90 is provided at the rear end; a solvent inlet is provided at the rear end of the extraction barrel assembly, and a solvent outlet is provided at the front end; the spiral shaft 50 is connected to a motor 100.

[0023] In the present utility model, a plurality of extraction barrels 10 are connected to form an extraction barrel assembly. The spice and the extraction solvent continuously enter from the front and rear ends respectively, so that the spice moves forward driven by the spiral shaft 50, and the extraction solvent flows backward, forming a countercurrent trend between the two, completing the continuous extraction of spice essential oil, reducing the cleaning time of the extraction container, and being beneficial to increasing production and improving efficiency.

[0024] The extraction barrel 10 is preferably a hollow cylinder with both ends open. Its inner circumference needs to be designed as a circular cross-section to match the outer circumference of the blades of the spiral shaft 50, and the outer circumference can be designed according to the actual installation and use environment. For example, if the cross-section is square, it can be convenient for installation, etc.

[0025] Regarding the connection method of adjacent extraction barrels 10, in this embodiment, flange connection is adopted. Specifically, as Figure 3 shown, a first flange 30 is provided at the front end of the extraction barrel 10, and a second flange 40 is provided at the rear end. Adjacent extraction barrels 10 are connected through the first flange 30 and the second flange 40. Moreover, in order to seal, a gasket needs to be added during connection.

[0026] After multiple extraction barrels 10 are connected, a space for performing extraction operations is formed inside the extraction barrels 10. The spice and the extraction solvent are extracted, so that the spice essential oil is incorporated into the extraction solvent, and then separation and extraction are carried out later.

[0027] In one embodiment, as Figure 1 shown, a first connecting spline 60 is provided at the front end of the spiral shaft 50, and a second connecting spline 70 is provided at the rear end of the spiral shaft 50. The first connecting spline 60 and the second connecting spline 70 are used to cooperate with each other to realize the transmission between adjacent spiral shafts 50. The spline connection can increase the stability and balance of power transmission. Moreover, the spline connection method allows for a certain gap, which can reduce the installation difficulty of the entire equipment.

[0028] An inlet port 80 is provided on the extraction barrel at the forefront of the extraction barrel assembly, and a solvent outlet is also provided. More specifically, the inlet port can be located at the rear end of the solvent outlet, so that a filtering device can be provided between the solvent outlet and the extraction cavity in the extraction barrel 10. Through the filtering device, spices can be prevented from mixing into the solvent outlet. Similarly, a filtering device is also provided at the solvent inlet.

[0029] As a specific implementation method, a support frame 20 for supporting the spiral shaft 50 is installed inside the extraction barrel 10. The support frame 20 includes a support rod arranged along the radial direction of the extraction barrel 10, and a limiting through hole for the spiral shaft 50 or the first connecting spline 60 to pass through is provided in the middle of the support rod. As Figure 2 and Figure 3As shown in the figure, the support rod is located at the front end of the extraction barrel 10, and a limit through hole is provided in the middle thereof for the first connecting spline 60 to pass through. Therefore, when the spiral shaft 50 rotates, it will not be interfered by the support rod. At the same time, for lubrication, a lubricant can be applied to the limit through hole of the support rod.

[0030] In addition, since the support rod is immersed in the solvent for a long time, a support skeleton is designed inside it, and the outer surface is covered with a tetrafluoro rubber sleeve.

[0031] The spiral shaft 50 includes a shaft body and spiral blades arranged around the outer periphery of the shaft body. There is a gap between the outer periphery of the spiral blades and the inner wall of the extraction barrel 10. Moreover, filter holes are provided on the spiral blades. Through the design of the filter holes and the gap, it is convenient for the solvent to flow through, so as to prevent the inner wall of the extraction barrel from being blocked.

[0032] In summary, through the design of a new extractor structure, the utility model can realize the continuous addition of spices, so as to carry out continuous extraction, and can increase the production scale and improve the output to the greatest extent on the basis of limited production costs.

Claims

1. A spice countercurrent extractor, characterized in that: It comprises an extraction barrel assembly, wherein the extraction barrel assembly comprises a plurality of extraction barrels (10) connected in sequence, and adjacent extraction barrels (10) are sealedly connected; Each of the extraction barrels (10) is in the shape of a hollow barrel, and a spiral shaft (50) is coaxially arranged therein, and the spiral shafts (50) in adjacent extraction barrels (10) are spline-connected; the spiral shaft (50) is used to drive the spices in the extraction barrel (10) to move forward through its blades; The front end of the extraction barrel assembly is provided with a feed inlet (80), and the rear end is provided with a discharge outlet (90); The rear end of the extraction barrel assembly is provided with a solvent inlet, and the front end is provided with a solvent outlet; The screw shaft (50) is connected to the motor (100).

2. A spice countercurrent extractor as claimed in claim 1, characterized in that: A support frame (20) for supporting the spiral shaft (50) is installed in the extraction barrel (10).

3. A spice countercurrent extractor as claimed in claim 1, characterized in that: The spiral shaft (50) comprises a shaft body and spiral blades arranged around the outer periphery of the shaft body, and a gap is provided between the outer periphery of the spiral blades and the inner wall of the extraction barrel (10).

4. A spice countercurrent extractor as claimed in claim 3, characterized in that: The spiral blades are provided with filtering holes.

5. A spice countercurrent extractor as claimed in claim 3 or 4, characterized in that: The front end of the spiral shaft (50) is provided with a first connecting spline (60), and the rear end of the spiral shaft (50) is provided with a second connecting spline (70), and the first connecting spline (60) and the second connecting spline (70) are used to cooperate with each other to realize transmission between adjacent spiral shafts (50).

6. A spice countercurrent extractor as claimed in claim 2, characterized in that: The support frame (20) comprises a support rod radially arranged along the extraction barrel (10), and a limiting through hole for the spiral shaft (50) or the first connecting spline (60) to pass through is provided in the middle of the support rod.

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