Rice bran oil separation and extraction equipment

Abstract

The utility model belongs to the technical field of plant oil extraction, disclose a kind of rice bran oil separation extraction equipment, including mechanical extrusion module, mechanical extrusion module includes extrusion tank, and multiple extrusion screw is installed in extrusion tank, and multiple extrusion screw is driven by driving element, and the top of extrusion tank is equipped with feed pipe, and feed pipe is linked with external pretreatment module, and the output end of extrusion tank is equipped with liquid outlet pipe;Centrifugal separation module, centrifugal separation module includes three-phase horizontal screw centrifuge, and conveying pump is installed on three-phase horizontal screw centrifuge by fixed frame, and the output end of conveying pump is linked with three-phase horizontal screw centrifuge, and the input end of conveying pump is linked with liquid outlet pipe, and three-phase horizontal screw centrifuge is equipped with crude oil outlet;Oil collection module.The utility model replaces solvent extraction by mechanical extrusion, avoids chemical residual risk, and then seamlessly links with extrusion module and centrifugal separation module, realizes crude oil efficient extraction under low temperature condition, and retains rice bran oil natural active ingredient simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of vegetable oil extraction technology, and in particular to a rice bran oil separation and extraction device. Background Technology

[0002] Rice bran is a major byproduct of rice processing. It is rich in high-quality oils, proteins, vitamins, etc. Rice bran oil is known as a "healthy and nutritious oil" because of its high nutritional value and rich antioxidants. However, rice bran is extremely prone to rancidity, so the extraction process requires a high degree of timeliness and gentleness.

[0003] Currently, the main methods for extracting rice bran oil are pressing and solvent extraction. Traditional screw pressing has a low oil yield, and the high temperature generated during the process can easily cause denaturation of oil and rice bran protein, affecting the quality of oil and by-products. Solvent extraction has a high oil yield, but there is a risk of solvent residue, the equipment is complex and costly, and there are safety hazards. Therefore, we propose a rice bran oil separation and extraction device. Utility Model Content

[0004] To address the technical problems raised in the background section, this utility model provides the following technical solution: A rice bran oil separation and extraction device includes a mechanical extrusion module, the mechanical extrusion module includes an extrusion tank, a multi-stage extrusion screw is vertically arranged and rotatably installed inside the extrusion tank, the multi-stage extrusion screw is driven by a drive component, a feed pipe is installed on the top of the extrusion tank and is connected to an external pretreatment module, and a liquid outlet pipe is installed on the output end of the extrusion tank. The centrifugal separation module includes a three-phase horizontal decanter centrifuge, on which a transfer pump is mounted via a fixed frame. The output end of the transfer pump is connected to the three-phase horizontal decanter centrifuge, and the input end of the transfer pump is connected to the liquid outlet pipe. The three-phase horizontal decanter centrifuge is equipped with a crude oil outlet. The oil collection module includes a crude oil storage tank connected to the crude oil outlet. A drain pipe is installed on the bottom side wall of the crude oil storage tank, and a drain valve is installed on the drain pipe.

[0005] As a technical solution of the rice bran oil separation and extraction equipment of this utility model, the multi-stage extrusion screw includes a primary extrusion screw and a secondary extrusion screw. The primary extrusion screw and the secondary extrusion screw are coaxially arranged. The pitch of the primary extrusion screw is greater than the pitch of the secondary extrusion screw, and the shaft diameter of the secondary extrusion screw is greater than the shaft diameter of the primary extrusion screw.

[0006] As a technical solution of the rice bran oil separation and extraction equipment of this utility model, the driving component is a variable frequency motor, which is installed on one end of the extrusion tank, and the output shaft of the variable frequency motor is connected to one end of the multi-stage extrusion screw.

[0007] As a technical solution of the rice bran oil separation and extraction equipment of this utility model, the slag outlet connected to the extrusion tank is connected to the external cake crushing mechanism.

[0008] As a technical solution for the rice bran oil separation and extraction equipment described in this utility model, the three-phase horizontal screw centrifuge is further equipped with a connected wet residue outlet and a juice outlet.

[0009] As a technical solution of the rice bran oil separation and extraction equipment of this utility model, the bottom of the crude oil temporary storage tank is an inverted conical structure.

[0010] As a technical solution of the rice bran oil separation and extraction equipment of this utility model, it further includes a PLC control system, which is electrically connected to each module through cables, and the PLC control system is integrated with a touch screen for setting parameters.

[0011] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model replaces solvent leaching with mechanical extrusion, avoiding the risk of chemical residues. It is then seamlessly connected with the extrusion module and centrifugal separation module to achieve efficient extraction of crude oil under low temperature conditions, while retaining the natural active ingredients of rice bran oil.

[0012] 2. This utility model uses a PLC control system to precisely regulate production parameters, ensuring process consistency. Combined with three-phase separation, it simultaneously produces crude oil, wet residue, and juice. Byproducts can be fully utilized, significantly reducing energy consumption and waste disposal costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the main structure of this utility model.

[0014] Figure 2 This is a side view of the structure of this utility model.

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0017] Explanation of reference numerals in the attached figures: In the diagram: 101, extrusion tank; 1021, primary extrusion screw; 1022, secondary extrusion screw; 103, variable frequency motor; 104, feed pipe; 105, liquid outlet pipe; 201, three-phase horizontal screw centrifuge; 202, transfer pump; 203, crude oil outlet; 204, wet residue outlet; 205, juice outlet; 301, crude oil temporary storage tank; 302, drain pipe; 303, drain valve; 4, PLC control system; 401, touch screen. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Reference Figures 1-4 This invention provides a rice bran oil separation and extraction device, which includes a mechanical extrusion module. The mechanical extrusion module includes an extrusion tank 101, which is made of 304 stainless steel. A multi-stage extrusion screw is vertically and rotatably installed inside the extrusion tank 101. The multi-stage extrusion screw is driven by a drive component. A feed pipe 104 is installed on the top of the extrusion tank 101 and is connected to an external pretreatment module (the external pretreatment module includes a conditioning and softening tank, which is equipped with a stirrer and a steam jacket, and the steam jacket is connected to a temperature control system). A liquid outlet pipe 105 is installed on the output end of the extrusion tank 101. In application, the multi-stage extrusion screw achieves gradual pressing of rice bran, avoiding oil denaturation caused by one-time high pressure. At the same time, the feed pipe 104 is connected to the external pretreatment module, improving the raw material processing efficiency. The centrifugal separation module includes a three-phase horizontal decanter centrifuge 201 (differential speed 3000r / min, centrifugal factor ≥4000g). The three-phase horizontal decanter centrifuge 201 is existing technology and will not be described in detail here. A transfer pump 202 is installed on the three-phase horizontal decanter centrifuge 201 via a fixed frame. The output end of the transfer pump 202 is connected to the three-phase horizontal decanter centrifuge 201, and the input end of the transfer pump 202 is connected to the liquid outlet pipe 105. A crude oil outlet 203 is installed on the three-phase horizontal decanter centrifuge 201. In application, the three-phase horizontal decanter centrifuge 201 directly processes the extruded mixture, simultaneously separating crude oil, wet residue and juice, which greatly shortens the process flow. The oil collection module includes a crude oil storage tank 301 connected to the crude oil outlet 203. A drain pipe 302 is installed on the bottom side wall of the crude oil storage tank 301, and a drain valve 303 is installed on the drain pipe 302. In application, the drain pipe 302 of the crude oil storage tank 301 is designed to periodically remove sediment impurities and reduce the burden of subsequent refining of crude oil.

[0020] Reference Figure 3 and Figure 4 The multi-stage extrusion screw includes a primary extrusion screw 1021 and a secondary extrusion screw 1022. The primary extrusion screw 1021 and the secondary extrusion screw 1022 are coaxially arranged. The pitch of the primary extrusion screw 1021 is greater than that of the secondary extrusion screw 1022, and the shaft diameter of the secondary extrusion screw 1022 is greater than that of the primary extrusion screw 1021. In application, the large-pitch primary extrusion screw 1021 quickly conveys and initially extrudes rice bran, while the small-pitch secondary extrusion screw 1022 increases the pressure and gradually increases the oil yield. At the same time, the shaft diameter difference design avoids clogging and adapts to raw materials with different moisture contents.

[0021] Reference Figure 2 and Figure 3 The driving component is a variable frequency motor 103 (power 5.5kW, speed range 10-50r / min). The variable frequency motor 103 is installed on one end of the extrusion tank 101, and the output shaft of the variable frequency motor 103 is connected to one end of the multi-stage extrusion screw. In application, the extrusion intensity is controlled by adjusting the speed to avoid high temperature damage to oil nutrients (such as vitamin E and oryzanol), while adapting to the physical properties of different rice bran raw materials.

[0022] Reference Figures 1-3 The slag outlet on the extrusion tank 101 is connected to the external cake crushing mechanism. In application, the extruded rice bran cake can be directly recycled (such as for feed or fuel), realizing resource recycling and reducing waste disposal costs.

[0023] Reference Figures 1-3 The three-phase horizontal screw centrifuge 201 is also equipped with a connected wet residue outlet 204 and juice outlet 205. In application, the wet residue outlet 204 recovers solid by-products, and the juice outlet 205 treats wastewater, which meets environmental protection requirements. At the same time, the crude oil outlet 203 is directly connected to the oil collection module, reducing the risk of intermediate pollution.

[0024] Reference Figures 1-3 The bottom of the crude oil storage tank 301 has an inverted conical structure with a cone bottom inclination angle of 60°. In application, the inverted conical design is conducive to the sedimentation of impurities and their centralized discharge through the drain valve 303, thereby improving the purity of crude oil and extending the equipment cleaning cycle.

[0025] Reference Figures 1-4It also includes a PLC control system 4, which is electrically connected to each module via cables. The PLC control system 4 integrates a touch screen 401 for setting parameters. The PLC control system 4 also integrates a frequency converter and a temperature sensor (monitoring the temperature of the extrusion tank 101 ≤ 60℃). In application, the integrated touch screen 401 enables one-click setting of parameters (such as extrusion speed and centrifugation time), reducing human operation errors, while monitoring the equipment status in real time to ensure production stability.

[0026] The working principle of this utility model is as follows: Raw material pretreatment stage: Rice bran is screened to remove impurities (such as rice husks and broken rice), and the moisture content is adjusted to 8%-10% through a conditioning and softening tank, and preheated to 40℃ (to prevent the oil viscosity from being too high due to low temperature pressing). Mechanical pressing stage: Start the PLC control system 4, use the touch screen 401 to set the speed of the first-stage extrusion screw 1021 to 30 r / min and the speed of the second-stage extrusion screw 1022 to 20 r / min, then feed the pre-treated rice bran into the extrusion tank 101 through the feed pipe 104, and the pressing liquid flows into the conveying pump 202 through the liquid outlet pipe 105. Finally, the rice bran cake is discharged from the slag outlet to the external cake crushing mechanism to produce granular by-products (protein content ≥18%). Centrifugal separation stage: The transfer pump 202 injects the pressing liquid into the three-phase horizontal screw centrifuge 201 and runs it for a period of time (e.g., 25 minutes). Then the crude oil enters the crude oil storage tank 301 through the crude oil outlet 203. The wet residue and juice are transported to the equipment (e.g., dryer and sewage treatment pond) through the wet residue outlet 204 and juice outlet 205 respectively. Crude oil collection and refining stage: Crude oil is left to stand in temporary storage tank 301 for a period of time (e.g., 2 hours), and the bottom sediment is discharged by opening drain valve 303. Then, the crude oil is initially filtered by external equipment (e.g., plate and frame filter) and enters the refining process (degumming, deacidification). By-product utilization stage: After drying, the wet residue is used as a feed additive (crude protein ≥16%), while the juice is separated into oil and water, and the COD of the wastewater is reduced to below 200mg / L, meeting the discharge standards.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rice bran oil separation and extraction device, characterized in that: include: The mechanical extrusion module includes an extrusion tank (101), in which a multi-stage extrusion screw is vertically arranged and rotatably installed. The multi-stage extrusion screw is driven by a drive component. A feed pipe (104) is installed on the top of the extrusion tank (101) and is connected to an external pretreatment module. A liquid outlet pipe (105) is installed on the output end of the extrusion tank (101). The centrifugal separation module includes a three-phase horizontal decanter centrifuge (201), on which a transfer pump (202) is mounted via a fixed frame. The output end of the transfer pump (202) is connected to the three-phase horizontal decanter centrifuge (201), and the input end of the transfer pump (202) is connected to the liquid outlet pipe (105). The three-phase horizontal decanter centrifuge (201) is equipped with a crude oil outlet (203). The oil collection module includes a crude oil storage tank (301) connected to the crude oil outlet (203). A drain pipe (302) is installed on the bottom side wall of the crude oil storage tank (301), and a drain valve (303) is installed on the drain pipe (302).

2. The rice bran oil separation and extraction equipment according to claim 1, characterized in that: The multi-stage extrusion screw includes a primary extrusion screw (1021) and a secondary extrusion screw (1022). The primary extrusion screw (1021) and the secondary extrusion screw (1022) are coaxially arranged. The pitch of the primary extrusion screw (1021) is greater than the pitch of the secondary extrusion screw (1022), and the shaft diameter of the secondary extrusion screw (1022) is greater than the shaft diameter of the primary extrusion screw (1021).

3. The rice bran oil separation and extraction equipment according to claim 1, characterized in that: The driving component is a variable frequency motor (103), which is installed on one end of the extrusion tank (101), and the output shaft of the variable frequency motor (103) is connected to one end of the multi-stage extrusion screw.

4. The rice bran oil separation and extraction equipment according to claim 1, characterized in that: The slag outlet on the extrusion tank (101) is connected to the external cake crushing mechanism.

5. The rice bran oil separation and extraction equipment according to claim 1, characterized in that: The three-phase horizontal screw centrifuge (201) is also equipped with a wet residue outlet (204) and a juice outlet (205) that are connected to each other.

6. The rice bran oil separation and extraction equipment according to claim 1, characterized in that: The bottom of the crude oil storage tank (301) has an inverted conical structure.

7. The rice bran oil separation and extraction equipment according to any one of claims 1-6, characterized in that: It also includes a PLC control system (4), which is electrically connected to each module via cables. The PLC control system (4) is equipped with a touch screen (401) for setting parameters.

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