Squeezing and extracting equipment for rice oil production

Abstract

The invention discloses squeezing extraction equipment for rice oil production, which comprises a base, the top of one end of the base is connected with a driving motor, the top of the other end of the base is connected with an adjusting device, the driving motor is in transmission connection with an oil squeezing roller, an outer ring of the oil squeezing roller is provided with an outer cylinder, and outer rings of two ends of the outer cylinder are respectively communicated with a circulating device. The inner wall of the outer barrel is communicated with the feeding hopper, the outer barrel is provided with a cold liquid cabin, the two ends of the cold liquid cabin are communicated with the circulating device, the outer barrel is provided with an oil discharging groove, and inserting grooves are formed in the two sides of the oil discharging groove. Meanwhile, a precise cooling system is arranged, turbulent flow is formed through cooperation of a spiral strip in a cold liquid cabin and a stabilizer bar, the heat exchange efficiency is further improved, heat-sensitive components are effectively protected, a linkage device achieves synchronous operation of the cooling system and the squeezing system through a belt wheel set, and energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of grain and oil processing, in particular to a pressing and extraction device for producing rice oil. Background Art

[0002] Patent application CN116445209B discloses a method for pre-pressing rice bran to produce oil and immediately stabilize it. This method addresses the challenges of existing rice bran oil pressing processes, including complex processes, bulky equipment, difficult operation, nutrient loss, and a high risk of harmful substances. The technical solution includes the following steps: screening to remove broken rice and other large impurities from the rice bran; wetting to produce wet rice bran by adding a dielectric solution and mixing it evenly; ohmic heating to compact the wet rice bran and ohmic heat it to produce rice bran clinker; drying to dry the rice bran clinker; and pressing to produce a stabilized rice bran cake by pressing the dried rice bran clinker. This invention features a simple process, compact equipment, precise control, and high efficiency and low energy consumption. It significantly improves rice bran oil yield and cake stability and can be seamlessly integrated with rice processing.

[0003] In the existing technologies including the above-mentioned patents, traditional rice oil pressing equipment generally has two major technical bottlenecks: first, the fixed-pitch oil pressing rollers are difficult to adapt to the pressing requirements of rice of different qualities (such as moisture content of 15-25%, oil content of 18-22%), resulting in insufficient oil yield of low-quality rice, and the destruction of heat-sensitive components such as vitamin E in high-quality rice due to excessive pressing; second, the coupling effect of pressure and temperature is prominent during the pressing process. When the pressure exceeds 120MPa, the local temperature can reach above 150°C, which not only causes protein denaturation, but also accelerates oil oxidation. In addition, the existing cooling systems mostly use uniform cooling methods, which cannot accurately control the temperature of the high-temperature zone at the end of the pressing.

[0004] Therefore need a kind of rice oil production squeezing extraction equipment to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a pressing and extraction device for producing rice oil to solve the technical problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a pressing and extraction equipment for rice oil production, comprising a base, the top of one end of the base is connected to a drive motor, the top of the other end of the base is connected to an adjustment device, the drive motor is transmission-connected to an oil pressing roller, an outer cylinder is provided on the outer ring of the oil pressing roller, the outer rings at both ends of the outer cylinder are respectively connected to a circulation device, and the inner wall of the outer cylinder is connected to a feed hopper.

[0007] Furthermore, the outer cylinder is provided with a cold liquid tank, both ends of the cold liquid tank are connected to the circulation device respectively, the outer cylinder is provided with an oil drain groove, slots are provided on both sides of the oil drain groove, the slots are slidably connected to the oil filter plate, and a slag discharge port is provided at one end of the outer cylinder away from the drive motor, and the slag discharge port corresponds to the adjustment device.

[0008] Furthermore, spiral strips are provided on the inner wall of the cold liquid tank, and the spiral strips are connected to stabilizing rods that are equidistantly arranged in a ring shape.

[0009] Furthermore, the circulation device includes a liquid pump, the input end of the liquid pump is connected to one end of the liquid inlet pipe, the other end of the liquid inlet pipe is connected to one end of the storage tank, the other end of the storage tank is connected to the cold liquid tank, the output end of the liquid pump is connected to one end of the discharge pipe, the other end of the discharge pipe is connected to the cold liquid tank, and the liquid pump is connected to the linkage device in a transmission manner.

[0010] Furthermore, the other end of the liquid discharge pipe is connected to one end of the cold liquid tank near the slag discharge port.

[0011] Furthermore, the linkage device includes a first pulley and a second pulley, the first pulley and the second pulley are connected to the transmission belt, the first pulley is connected to the adjustment device, and the second pulley is connected to the liquid pump.

[0012] Furthermore, the adjusting device includes a support block, which is threadedly connected to the adjusting bolt, one end of the adjusting bolt is rotatably connected to one end of the hexagonal rod, the hexagonal rod is slidably connected to the hexagonal hole opened in the first pulley, the other end of the hexagonal rod is connected to one end of the pressure plug, the other end of the pressure plug corresponds to the slag discharge port, the other end of the pressure plug has a hexagonal groove, and the hexagonal groove is slidably connected to the oil pressing roller.

[0013] Furthermore, a spiral blade is provided on the outer ring of the oil pressing roller, and the spiral blade adopts a variable pitch design. The blade spacing of the spiral blade gradually decreases axially along the position of the driving motor toward the position of the hexagonal groove. A hexagonal head is provided at one end of the oil pressing roller close to the hexagonal groove, and the hexagonal head is slidably connected to the hexagonal groove.

[0014] Furthermore, both sides of the first pulley are rotatably engaged with grooves formed in the clamping block, and the clamping block is connected to the supporting block.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The operator drives the hexagonal rod to move axially by turning the handle and rotating the adjusting bolt, which drives the pressure plug to adjust the opening of the slag discharge port. At the same time, the hexagonal rod forms a sliding connection with the hexagonal hole of the first pulley through its hexagonal cross-section. While the axial displacement is driven by the adjusting bolt to adjust the pressure, the effective transmission of torque is ensured, so that the pressure plug and the rotating oil press roller keep rotating synchronously, and the opening and closing degree of the slag discharge port is used to control the pressure in the cavity, so as to match the optimal pressing pressure according to the characteristics of different rice varieties (such as moisture content, hardness, oil content and other parameters), realize precise pressure control, and ensure that rice of different qualities can achieve the optimal oil yield; the cold liquid tank arranged inside the outer cylinder realizes the circulation and heat exchange of the coolant through the circulation device, and the oil generated by the pressing is discharged through the oil drain groove. The removable oil filter plate installed in the slot realizes oil-residue separation. When the temperature and pressure are high and the temperature is too high, the circulation and heat exchange of the coolant can prevent the heat generated by the pressing from causing oil oxidation and protein denaturation.

[0016] The variable pitch design of the oil press roller enables the rice to be gradually pressurized during the pressing process. This gradient compression method not only ensures that the pressure of the rice increases evenly and avoids the destruction of nutrients caused by local overpressure, but also the progressive pressurization accurately controls the highest temperature area at the end position near the slag discharge port, so that the coolant of the circulating device can be targeted to cool the high-temperature area through the discharge pipe, thereby improving the heat exchange efficiency; the liquid pump draws coolant from the storage tank through the liquid inlet pipe and transports it to the high-temperature end of the cold liquid tank through the discharge pipe, that is, near the slag discharge port. The linkage device uses the first pulley, the transmission belt and the second pulley to make the liquid pump and the regulating device operate synchronously, thereby further achieving the effect of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention; Figure 3 Schematic diagram of the cross-sectional structure of the outer cylinder in the present invention; Figure 4 Schematic diagram of the internal structure of the present invention; Figure 5 Schematic diagram of the structure of the pressure plug in the present invention; Figure 6 Schematic diagram of the structure of the regulating device in the present invention; Figure 7 Schematic diagram of the structure of the linkage device in the present invention; Figure 8 Schematic diagram of the structure of the spiral leaf in the present invention; Figure 9 for Figure 8 Enlarged view of point A in the middle; Figure 10 Schematic diagram of the structure of the spiral strip and the stabilizing rod in the present invention.

[0018] In the figure: 1-base, 2-drive motor, 3-outer cylinder, 31-slag discharge port, 32-slot, 33-oil discharge trough, 34-cold liquid compartment, 4-inlet hopper, 5-circulation device, 51-liquid pump, 511-discharge pipe, 512-liquid inlet pipe, 52-storage box, 53-spiral bar, 54-stabilizing rod, 6-linkage device, 61-first pulley, 611-block, 62-second pulley, 63-transmission belt, 7-adjusting device, 71-support block, 72-adjusting bolt, 73-hexagonal rod, 74-pressure plug, 741-hexagonal groove, 8-oil pressing roller, 81-spiral blade, 82-hexagonal head. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-10 The present invention provides a technical solution: a pressing and extraction device for rice oil production, comprising a base 1, wherein the top of one end of the base 1 is connected to a drive motor 2, and the top of the other end of the base 1 is connected to an adjusting device 7. The drive motor 2 is transmission-connected to an oil pressing roller 8, an outer cylinder 3 is provided on the outer ring of the oil pressing roller 8, and the outer rings at both ends of the outer cylinder 3 are respectively connected to a circulation device 5. The inner wall of the outer cylinder 3 is connected to a feed hopper 4, and the drive motor 2 drives the oil pressing roller 8 to rotate at high speed in the outer cylinder 3. After the rice raw material enters the pressing chamber from the feed hopper 4 in a quantitative manner, it is progressively squeezed between the oil pressing roller 8 and the oil filter plate. The circulation device 5 is connected to the cooling liquid tanks 34 at both ends of the outer cylinder 3 through stainless steel pipes to form a closed-loop cooling system, which takes away the heat generated by the pressing in real time to prevent oil oxidation and protein denaturation. The adjusting device 7 controls the pressure in the chamber by precisely adjusting the opening and closing degree of the slag discharge port 31, thereby matching the optimal pressing pressure according to the characteristics of different rice varieties (such as moisture content, hardness, oil content, etc.), realizing precise pressure control, and ensuring that rice of different qualities can achieve the optimal oil yield.

[0021] The outer cylinder 3 is provided with a cold liquid tank 34, and both ends of the cold liquid tank 34 are respectively connected to the circulation device 5. The outer cylinder 3 is provided with an oil drain groove 33, and slots 32 are provided on both sides of the oil drain groove 33. The slots 32 are slidably connected to the oil filter plate. A slag discharge port 31 is provided at one end of the outer cylinder 3 away from the drive motor 2, and the slag discharge port 31 corresponds to the regulating device 7. The cold liquid tank 34 arranged inside the outer cylinder 3 realizes the circulation heat exchange of the coolant through the circulation device 5, and the oil generated by pressing is discharged through the oil drain groove 33. The detachable oil filter plate installed in the slot 32 realizes oil-residue separation. When the temperature and pressure are high and the temperature is too high, the circulation heat exchange of the coolant can prevent the heat generated by pressing from causing oil oxidation and protein denaturation.

[0022] Spiral strips 53 are provided on the inner wall of the cooling liquid compartment 34, and the spiral strips 53 are connected to the stabilizing rods 54 arranged in an annular shape and at equal intervals. The spiral strips 53 force the coolant to form a spiral turbulent motion, so that the coolant circulates and is evenly distributed, the heat exchange efficiency is improved, and the damage of heat-sensitive components is effectively prevented. The stabilizing rods 54 are welded and fixed at 90° equal angles, so that the spiral strips 53 remain stable under the working pressure of the coolant circulation, ensuring long-term operational reliability. At the same time, the spiral flow channel formed by the spiral strips 53 can effectively prevent the deposition of impurities, and the cleaning cycle is extended compared to the traditional straight channel.

[0023] The circulation device 5 includes a liquid pump 51, which can be a centrifugal pump or a reciprocating pump. The input end of the liquid pump 51 is connected to one end of the liquid inlet pipe 512, the other end of the liquid inlet pipe 512 is connected to one end of the storage tank 52, the other end of the storage tank 52 is connected to the cold liquid tank 34, the output end of the liquid pump 51 is connected to one end of the discharge pipe 511, the other end of the discharge pipe 511 is connected to the cold liquid tank 34, the liquid pump 51 is connected to the linkage device 6, the other end of the discharge pipe 511 is connected to one end of the cold liquid tank 34 near the slag discharge port 31, and the linkage device 6 includes a first pulley 61 and a second pulley The pulley 62, the first pulley 61 and the second pulley 62 are connected to the transmission belt 63, the first pulley 61 is connected to the adjusting device 7, the second pulley 62 is connected to the liquid pump 51, the liquid pump 51 draws coolant from the storage tank 52 through the liquid inlet pipe 512, and transports it to the high-temperature end of the cold liquid compartment 34, that is, near the slag discharge port 31, through the discharge pipe 511. The linkage device 6 makes the liquid pump 51 and the adjusting device 7 operate synchronously through the first pulley 61, the transmission belt 63 and the second pulley 62, thereby further achieving the effect of energy saving.

[0024] The adjusting device 7 includes a support block 71, which is threadedly connected to the adjusting bolt 72. One end of the adjusting bolt 72 is rotatably connected to one end of the hexagonal rod 73, and the other end of the adjusting bolt 72 is connected to the rotating handle, so that the operator can adjust it. The hexagonal rod 73 is slidably connected to the hexagonal hole opened in the first pulley 61, and the other end of the hexagonal rod 73 is connected to one end of the pressure plug 74. The other end of the pressure plug 74 corresponds to the slag discharge port 31. The other end of the pressure plug 74 is provided with a hexagonal groove 741, which is slidably connected to the oil pressing roller 8. The operator rotates the adjusting bolt 72 by turning the handle to drive the oil pressing roller 8. The movable hexagonal rod 73 moves axially, driving the pressure plug 74 to adjust the opening of the slag discharge port 31. At the same time, the hexagonal rod 73 forms a sliding connection with the hexagonal hole of the first pulley 61 through its hexagonal cross-section. While the axial displacement is driven by the adjusting bolt 72 to adjust the pressure, the effective transmission of torque is ensured, so that the pressure plug 74 keeps rotating synchronously with the rotating oil pressing roller 8. The grooves opened by the block 611 on both sides of the first pulley 61 are rotatably engaged. The block 611 is connected to the support block 71, and the block 611 is used to ensure the stability of the linkage device 6 during the adjustment of the opening and closing of the slag discharge port 31 and the oil pressing.

[0025] The outer ring of the oil pressing roller 8 is provided with spiral blades 81, and the spiral blades 81 adopt a variable pitch design. The leaf spacing of the spiral blades 81 gradually decreases axially along the position of the drive motor 2 toward the position of the hexagonal groove 741. A hexagonal head 82 is provided at one end of the oil pressing roller 8 near the hexagonal groove 741, and the hexagonal head 82 is slidably connected to the hexagonal groove 741. The variable pitch design of the oil pressing roller 8 can enable the rice to be gradually pressurized during the pressing process. This gradient compression method not only ensures that the pressure of the rice is evenly increased, avoiding the destruction of nutrients caused by local overpressure, but also accurately controls the highest temperature zone at the end position near the slag discharge port 31, so that the coolant of the circulation device 5 is targeted to cool the high temperature area through the discharge pipe 511, and the heat exchange efficiency is improved. At the same time, the hexagonal head 82 is slidably connected to the hexagonal groove 741, but can still be transmitted.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A pressing and extracting device for producing rice oil, comprising a base (1), characterized in that: The top of one end of the base (1) is connected to the driving motor (2), the top of the other end of the base (1) is connected to the adjusting device (7), the driving motor (2) is connected to the oil pressing roller (8) by transmission, the outer ring of the oil pressing roller (8) is provided with an outer cylinder (3), the outer rings at both ends of the outer cylinder (3) are respectively connected to the circulation device (5), and the inner wall of the outer cylinder (3) is connected to the feed hopper (4).

2. A rice bran oil production squeezing and extraction equipment according to claim 1, characterized in that: The outer cylinder (3) is provided with a cold liquid chamber (34), and both ends of the cold liquid chamber (34) are respectively connected to the circulation device (5). The outer cylinder (3) is provided with an oil drain groove (33), and slots (32) are provided on both sides of the oil drain groove (33). The slots (32) are slidably connected to the oil filter plate. A slag discharge port (31) is provided at one end of the outer cylinder (3) away from the drive motor (2), and the slag discharge port (31) corresponds to the adjustment device (7).

3. A rice bran oil production squeezing and extraction equipment according to claim 2, characterized in that: The inner wall of the cold liquid compartment (34) is provided with a spiral strip (53), and the spiral strip (53) is connected to a stabilizing rod (54) which is arranged in an annular shape and at equal intervals.

4. The rice bran oil production squeezing and extraction equipment according to claim 2, wherein: The circulation device (5) comprises a liquid pump (51); an input end of the liquid pump (51) is connected to one end of a liquid inlet pipe (512); the other end of the liquid inlet pipe (512) is connected to one end of a storage tank (52); the other end of the storage tank (52) is connected to a cold liquid tank (34); an output end of the liquid pump (51) is connected to one end of a liquid discharge pipe (511); the other end of the liquid discharge pipe (511) is connected to the cold liquid tank (34); and the liquid pump (51) is in transmission connection with a linkage device (6).

5. The rice bran oil production squeezing and extraction equipment according to claim 4, characterized in that: The other end of the liquid discharge pipe (511) is communicated with one end of the cold liquid chamber (34) near the slag discharge port (31).

6. The rice bran oil production squeezing and extraction equipment according to claim 4, characterized in that: The linkage device (6) comprises a first pulley (61) and a second pulley (62), wherein the first pulley (61) and the second pulley (62) are connected to a transmission belt (63), the first pulley (61) is connected to the adjustment device (7), and the second pulley (62) is connected to the liquid pump (51).

7. The rice bran oil production squeezing and extraction equipment according to claim 6, characterized in that: The adjusting device (7) includes a support block (71), the support block (71) is threadedly connected to the adjusting bolt (72), one end of the adjusting bolt (72) is rotatably connected to one end of a hexagonal rod (73), the hexagonal rod (73) is slidably connected to a hexagonal hole opened in the first pulley (61), the other end of the hexagonal rod (73) is connected to one end of a pressure plug (74), the other end of the pressure plug (74) corresponds to the slag discharge port (31), the other end of the pressure plug (74) is provided with a hexagonal groove (741), and the hexagonal groove (741) is slidably connected to the oil pressing roller (8).

8. The rice bran oil production squeezing and extraction equipment according to claim 7, characterized in that: The outer ring of the oil pressing roller (8) is provided with a spiral blade (81), and the spiral blade (81) adopts a variable pitch design. The pitch of the spiral blade (81) gradually decreases axially along the position of the driving motor (2) toward the position of the hexagonal groove (741). A hexagonal head (82) is provided at one end of the oil pressing roller (8) close to the hexagonal groove (741), and the hexagonal head (82) is slidably connected to the hexagonal groove (741).

9. The rice bran oil production squeezing and extraction equipment according to claim 7, characterized in that: Both sides of the first pulley (61) are rotatably engaged with grooves provided in the clamping block (611), and the clamping block (611) is connected to the supporting block (71).

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