A device for roasting oilseeds for oil extraction

Abstract

The utility model discloses a kind of oil material roasting devices for oil pressing, belong to oil pressing equipment technical field, including heating base and frying pan, stirring shaft is equipped in frying pan, motor is arranged in frying pan upper side of stirring shaft top transmission connection frame, stirring shaft lower part is equipped with the stirring vane for roasting oil material, stirring shaft bottom is rotatably connected with frying pan, and stirring shaft bottom is equipped with cavity, frying pan bottom is equipped with gas delivery hole, one end of gas delivery hole is communicated with cavity, other end is located frying pan side wall and is equipped with connection valve, connection valve is connected with hot air blower by gas delivery pipe, the gas jet pipe of extending along radial direction is equipped on the outside of stirring shaft, one end of gas jet pipe is communicated with cavity and is set in the rear side of stirring vane, gas jet pipe is evenly opened gas jet on axial direction, and gas jet is used to spray hot air to oil material that stirring vane is thrown and rotated.The utility model can be realized by stirring vane that oil material is turned over, and it can be directly acted on thrown oil material by means of hot air, it is helpful to guarantee that oil material is heated uniformly, and roasting time is shortened.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil pressing equipment, and specifically relates to an oilseed roasting device for oil pressing. Background Technology

[0002] Roasting oilseeds before pressing is a crucial pretreatment step that increases oil yield, improves oil quality, and reduces the difficulty of subsequent pressing. Heating at a suitable temperature of 120-180℃ enhances the activity of oil molecules in the oilseeds, reduces oil viscosity, disrupts the cell wall structure, and denatures proteins, making it easier to separate the oil from the cells. Simultaneously, it evaporates the moisture content of the oilseeds to a suitable range of 1%-3%, preventing rancidity during storage and extending shelf life. Furthermore, high temperatures inactivate enzymes in the oilseeds, reducing off-odors, while transforming flavor compounds, resulting in oil with a natural aroma and a clearer color.

[0003] Existing oilseed roasting equipment generally consists of a roasting pan and a heating base. A rotating shaft is installed inside the roasting pan, and a stirring blade is fixed on the rotating shaft. The rotating shaft and the stirring blade are driven to rotate by a drive device, which, together with the heating base, heats the roasting pan, thereby realizing the roasting of oilseeds. For example, a heat-conducting flat-bottomed roasting pan for oil crops is disclosed in Chinese utility model patent (CN209940932U).

[0004] However, existing oilseed roasting equipment relies solely on the single rotation of the stirring blades to turn the oilseeds, resulting in poor uniform heating of the oilseeds during the roasting process. For oilseeds such as rapeseed and soybeans, which have a high natural moisture content, simple stirring and roasting cannot efficiently accelerate moisture evaporation. The roasting time needs to be extended to reduce the moisture content to a suitable range, leading to low roasting efficiency. Prolonged heating can easily damage the flavor substances in the oilseeds, affecting the quality of the oil extracted later. Utility Model Content

[0005] The purpose of this invention is to provide an oilseed roasting device for oil extraction, which aims to solve the problems existing in the prior art mentioned above.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An oilseed roasting device for oil extraction includes a heating base and a roasting pan mounted on top of the heating base. A stirring shaft is installed inside the roasting pan, and a motor mounted above the roasting pan is connected to the top of the stirring shaft. Stirring blades for roasting the oilseeds are located at the lower part of the stirring shaft. The bottom of the stirring shaft is rotatably connected to the roasting pan, and a cavity is provided at the bottom of the stirring shaft. An air inlet is located at the bottom of the roasting pan, with one end communicating with the cavity and the other end located on the side wall of the roasting pan and equipped with a connecting valve. The connecting valve is connected to a hot air blower via an air inlet pipe. A radially extending jet pipe is provided on the outer side of the stirring shaft, with one end communicating with the cavity and located behind the moving direction of the stirring blades. Jet holes are evenly spaced along the axial direction on the jet pipe, and these jet holes are used to spray hot air onto the oilseeds thrown off by the rotating stirring blades.

[0007] Furthermore, the jet pipe is fitted with a fixed ring plate, the stirring blade is hinged to the fixed ring plate, the upper part of the stirring blade is provided with an upper extension plate that is slidably connected thereto, and the lower part is provided with a lower extension plate that is slidably connected thereto.

[0008] Furthermore, the fixed ring plate is provided with a first connecting ear plate, and the stirring blade is provided with a second connecting ear plate. The first connecting ear plate and the second connecting ear plate are respectively provided with a first connecting hole and a second connecting hole of the same size and coaxial. The first connecting hole and the second connecting hole are each uniformly provided with multiple positioning grooves along the circumference. A fixing pin passes through the first connecting ear plate and the second connecting ear plate that are aligned and connected. The surface of the fixing pin is provided with a positioning key along the axial direction. The positioning key passes through the positioning groove located on the first connecting ear plate and the second connecting ear plate to limit the first connecting ear plate and the second connecting ear plate.

[0009] Furthermore, a first positioning hole is provided on both sides of the upper extension plate and the lower extension plate. Multiple first positioning holes are evenly provided along the sliding direction of the upper extension plate and the lower extension plate. A second positioning hole is provided on the stirring blade corresponding to the upper extension plate and the lower extension plate. The first positioning hole and the second positioning hole are fixed by bolts.

[0010] Compared with the shortcomings and deficiencies of existing technologies, this utility model has the following beneficial effects: This invention provides an oilseed roasting device for oil extraction. An air jet pipe connected to a cavity is added to the outside of the stirring shaft. Positioned behind the moving stirring blades, and working in conjunction with a hot air blower, the device evenly sprays hot air onto the oilseeds as they are scooped up and dropped by the stirring blades. Compared to existing oilseed roasting equipment that relies solely on the stirring blades, this device both agitates the oilseeds through the blades and directly applies hot air to the dropped oilseeds, accelerating heat transfer between the inside and outside of the material layer. This prevents localized overheating or undercooking due to accumulation, ensuring uniform heating. For oilseeds with high moisture content, the hot air from the air jet pipe directly acts on the oilseeds, effectively shortening the roasting time.

[0011] The angle adjustment and length extension structure of the stirring blades can be flexibly adjusted according to the amount of oil to be roasted and the particle size. For large batches or large particles of oil, the angle of the stirring blades can be increased and the extension plate can be extended; for small batches or small particles of oil, the angle can be decreased and the extension plate can be shortened, so that the oil roasting device can adapt to the roasting needs of oil with different roasting volumes. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the oilseed roasting device used for oil extraction in Example 1.

[0013] Figure 2 This is a cross-sectional view of the connection between the air supply hole and the bottom cavity of the stirring shaft in this utility model.

[0014] Figure 3 This is a three-dimensional structural diagram of the jet pipe and stirring blade in Example 2.

[0015] Figure 4 This is a schematic diagram of the connection structure between the first connecting ear plate and the second connecting ear plate in Embodiment 2.

[0016] Figure 5 This is a three-dimensional structural diagram of the fixing pin in Example 2.

[0017] Figure 6 This is a cross-sectional view of the connection structure between the positioning groove and the positioning key in Embodiment 2.

[0018] In the diagram: 100, heating base; 110, pulley; 200, wok; 210, motor; 211, U-shaped support plate; 220, stirring shaft; 221, cavity; 230, stirring blade; 231, upper extension plate; 232, lower extension plate; 233, first positioning hole; 234, upper sliding groove; 235, lower sliding groove; 240, jet pipe; 241, jet hole; 242, connecting valve; 243, air supply hole; 244, fixing ring plate; 245, first connecting ear plate; 246, second connecting ear plate; 247, fixing pin; 248, gasket; 2471, positioning key; 2472, threaded rod; 249, positioning groove; 250, baffle; 251, guide plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Example 1 Referring to Figure 1, this utility model discloses an oilseed roasting device for oil extraction, including a heating base 100 and a roasting pan 200. The heating base 100 can adopt conventional heating methods of existing oilseed roasting equipment, such as electric heating or fuel heating. A pulley 110 with a self-locking function is installed at its bottom to facilitate the overall movement and fixation of the device. The roasting pan 200 adopts a cylindrical pan structure with an open top and is securely installed on top of the heating base 100.

[0021] A U-shaped support plate 211 is installed on the top of the wok 200. The back plate of the U-shaped support plate 211 is located directly above the center of the wok 200, and both ends extend horizontally along the radial direction of the wok 200. The parallel side plates on both sides are vertically fixed to the top edge of the wok 200. A stirring shaft 220 is provided inside the wok 200 along the axial direction. The bottom end of the stirring shaft 220 is rotatably connected to the bottom of the wok 200, and the top end is rotatably connected to the U-shaped support plate 211. A motor 210 is fixedly installed on the back plate of the U-shaped support plate 211. The output end of the motor 210 is connected to the top end of the stirring shaft 220 for transmission, providing power for the rotation of the stirring shaft 220.

[0022] Motor 210 can be a commercially available asynchronous motor with compatible power to meet the requirement of stable operation of stirring shaft 220 driving stirring blade 230.

[0023] Motor 210 can be a commercially available three-phase asynchronous motor, specifically the Y112M-4 model, with a rated power of 4kW and a rated speed of 1440r / min. This provides more stable torque output and prevents the stirring shaft 220 from jamming due to excessive load. The motor has an IP54 protection rating, effectively isolating it from dust and moisture generated during the roasting process, making it suitable for the working environment of the oil pressing workshop. It is also connected to the top of the stirring shaft 220 via a coupling, meeting the stable stirring speed requirements of the stirring blades 230. After being adapted by a reduction gear, the speed of the stirring shaft 220 meets the process requirements for uniform stirring of the oilseeds.

[0024] A stirring blade 230 is fixedly installed radially at the lower part of the stirring shaft 220. Multiple stirring blades 230 are evenly distributed around the circumference of the stirring shaft 220. In this embodiment, the number of stirring blades 230 is set to 4, and the stirring blades 230 are inclined relative to the horizontal plane. During operation, the stirring shaft 220 drives the stirring blades 230 to rotate synchronously, and the oil is stirred by the rotation of the stirring blades 230.

[0025] Reference Figure 2 The stirring shaft 220 has an axially extending cavity 221 at its bottom. The bottom of the wok 200 has a radially extending air inlet 243. One end of the air inlet 243 is sealed and rotatably connected to the cavity 221 at the bottom of the stirring shaft 220 to ensure no leakage during gas delivery; the other end extends to the outer side wall of the wok 200, and a connecting valve 242 is installed at the end of the air inlet 243. The connecting valve 242 is connected to an external hot air blower (not shown in the figure) via an air supply pipe to control the on / off state and flow rate of the hot airflow. A jet pipe 240 is fixedly installed on the stirring shaft 220. One end of the jet pipe 240 is connected to the cavity 221 at the bottom of the stirring shaft 220, and the other end extends radially outward along the stirring shaft 220. The number of jet pipes 240 is the same as the number of stirring blades 230, and the jet pipes 240 are arranged correspondingly to the rear side of the stirring blades 230 in the direction of rotation. Multiple jet holes 241 are evenly distributed along the axial direction of the jet pipe 240, and the jet holes 241 are oriented towards the path of oil spillage. An anti-clogging mesh is provided on the jet nozzle 241. The anti-clogging mesh is used to block oil and prevent oil from entering the jet nozzle 241.

[0026] The hot air blower can be a commercially available industrial-grade hot air generator, specifically the Baguang HAP2032 (F) industrial hot air generator, which has a rated power of 3.2kW and a maximum air volume of approximately 1200m³ / h at 50Hz. 3 / h, the hot air temperature can be continuously adjusted from room temperature to 350℃; the gas contact parts of the equipment are made of stainless steel, which has the characteristics of being resistant to water vapor and oil vapor, meets the hygiene requirements of food machinery, and can meet the needs of long-term continuous operation in the oil pressing workshop.

[0027] The lower side of the wok 200 has a discharge port, and a U-shaped guide plate 251 is fixedly installed at the discharge port. A baffle 250 is inserted vertically above the discharge port. The opening or closing of the discharge port can be controlled by inserting and removing the baffle 250, so as to facilitate the quick discharge of the roasted oil.

[0028] The above settings can achieve the following: The oil to be roasted is added quantitatively through the top opening of the wok 200, ensuring that the thickness of the oil is suitable for the stirring range of the stirring blades 230. The baffle 250 of the discharge port is closed, and the hot air blower and the air supply pipe are connected through the connecting valve 242.

[0029] The heating base 100 and motor 210 are turned on simultaneously. The heating base 100 heats the wok 200 at a preset temperature, and the motor 210 drives the stirring shaft 220 to rotate the stirring blade 230 at a stable speed.

[0030] The stirring blade 230 rotates at an angle, continuously scooping up the oil from the bottom of the wok 200, causing the oil to slide upwards along the inclined surface of the stirring blade 230 and fall down. Simultaneously, hot airflow enters the air inlet 243 through the air pipe and connecting valve 242, and then is distributed through the cavity 221 at the bottom of the stirring shaft 220 to each jet pipe 240, evenly spraying the falling oil from the jet holes 241. The hot airflow accelerates the evaporation of moisture inside the oil and further improves the uniformity of heating, activating the oil's activity.

[0031] After roasting is completed, the baffle 250 of the discharge port is pulled out, and the roasted oil is discharged through the U-shaped guide plate 251 and enters the next oil pressing process.

[0032] Example 2 Example 2 is a further improvement on Example 1. By improving the structure of the stirring blade, it enables angle adjustment and length extension functions, further improving the uniformity of stir-frying and the applicability of the equipment.

[0033] Reference Figure 3 , Figure 4 and Figure 6 This embodiment discloses an oilseed roasting device for oil extraction. A fixing ring plate 244 is fixedly sleeved on the jet pipe 240. A first connecting ear plate 245 is integrally formed on the side of the fixing ring plate 244 facing the stirring blade 230. A second connecting ear plate 246 is correspondingly provided on the side of the stirring blade 230 near the stirring shaft 220. The first connecting ear plate 245 and the second connecting ear plate 246 are respectively provided with a first connecting hole and a second connecting hole of the same size and with collinear axes. The walls of the first connecting hole and the second connecting hole are evenly provided with a plurality of positioning grooves 249 along the circumference.

[0034] Reference Figure 5A fixing pin 247 is inserted into the first and second connecting holes, which are aligned and connected. A positioning key 2471, adapted to the positioning groove 249, is provided axially on the surface of the fixing pin 247. One end of the fixing pin 247 has an integrally formed threaded rod 2472, the diameter of which is smaller than the inner diameter of the first and second connecting holes. A washer 248 and a nut are sequentially fitted onto the threaded rod 2472. The washer 248 is slightly larger than the diameter of the first and second connecting holes to enhance stability and prevent damage to the connecting lugs when the nut is tightened. The fixing pin 247 is inserted into the first and second connecting holes, and the positioning key 2471 is inserted into the corresponding positioning groove 249, thereby limiting the relative rotation of the first connecting lug 245 and the second connecting lug 246, i.e., limiting the rotation angle of the stirring blade 230.

[0035] The stirring blade 230 adopts a flat plate structure. Upper sliding grooves 234 are respectively opened on the left and right sides of the upper part, and upper extension plates 231 are slidably fitted in the upper sliding grooves 234. Lower sliding grooves 235 are respectively opened on the left and right sides of the lower part of the stirring blade 230, and lower extension plates 232 are slidably fitted in the lower sliding grooves 235.

[0036] The upper extension plate 231 has first positioning holes 233 near its left and right edges, and multiple first positioning holes 233 are evenly distributed along the sliding direction of the upper extension plate 231. The stirring blade 230 has second positioning holes (not shown in the figure) corresponding to the positions of the first positioning holes. When it is necessary to extend the length of the stirring blade 230, slide the upper extension plate 231 and / or the lower extension plate 232 to the target length, aligning and connecting the corresponding first positioning holes 233 and second positioning holes. Insert bolts and tighten them to complete the length fixation. The connection structure and adjustment method between the lower extension plate 232 and the stirring blade 230 are completely the same as those of the upper extension plate 231, and will not be described again here.

[0037] The above settings can achieve the following: When adjusting the tilt angle of the stirring blade 230, loosen the nut at the end of the fixing pin 247, pull the fixing pin 247 to one side to separate the positioning key 2471 from the positioning groove 249, rotate the stirring blade 230 to the target angle, align the positioning groove 249 of the first connecting ear plate 245 and the second connecting ear plate 246, then insert the fixing pin 247 to let the positioning key 2471 embed into the positioning groove 249, and tighten the nut to fix it; when adjusting the length, slide the upper extension plate 231 and / or the lower extension plate 232 to the appropriate length, align the first positioning hole 233 with the second positioning hole, and lock it with bolts.

[0038] The stirring blade 230, according to the adjusted angle and length, selectively scoops up the oil material—large-capacity, large-particle oil material is stirred up more by the large angle and long extension length, while small-capacity, small-particle oil material is stirred up by the small angle and short extension length to avoid excessive scattering, ensuring that different types of oil material can be fully stirred; the hot airflow is sprayed and blown onto the fallen oil material according to the path of Example 1, accelerating the evaporation of moisture and uniform heating.

[0039] By adjusting the angle and extending the length of the stirring blade 230, the equipment's adaptability to different quantities and types of oil is improved. For large batches or large particles of oil, the tilt angle of the stirring blade 230 can be increased to enhance the scooping force. At the same time, the lengths of the upper extension plate 231 and the lower extension plate 232 can be extended to expand the coverage area of ​​a single stir-fry, avoiding uneven heating in some areas due to oil accumulation. For small batches or small particles of oil, the tilt angle of the stirring blade 230 can be reduced and the extension plates can be shortened to ensure that evenly thick oil can still be fully turned over. Combined with the hot air auxiliary function of the jet pipe, it helps to ensure uniform heating and efficient dehydration of the oil.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oilseed roasting device for oil extraction, comprising a heating base (100) and a roasting pan (200) disposed on top of the heating base (100), wherein a stirring shaft (220) is provided inside the roasting pan (200), a motor (210) is connected to the top of the stirring shaft (220) and mounted above the roasting pan (200), and stirring blades (230) for roasting oilseeds are provided at the lower part of the stirring shaft (220), characterized in that, The bottom of the stirring shaft (220) is rotatably connected to the wok (200), and the bottom of the stirring shaft (220) is provided with a cavity (221). The bottom of the wok (200) is provided with an air supply hole (243). One end of the air supply hole (243) is connected to the cavity (221), and the other end is located on the side wall of the wok (200) and is provided with a connecting valve (242). The connecting valve (242) is connected to a hot air blower through an air supply pipe. The outside of the stirring shaft (220) is provided with a jet pipe (240) extending radially. One end of the jet pipe (240) is connected to the cavity (221) and is located on the rear side of the moving direction of the stirring blade (230). The jet pipe (240) is provided with jet holes (241) evenly opened along the axial direction. The jet holes (241) are used to spray hot air onto the oil that is thrown off by the rotating stirring blade (230).

2. The oil-roasting apparatus as described in claim 1, characterized in that, The jet pipe (240) is fitted with a fixed ring plate (244), the stirring blade (230) is hinged to the fixed ring plate (244), the upper part of the stirring blade (230) is provided with an upper extension plate (231) slidably connected thereto, and the lower part is provided with a lower extension plate (232) slidably connected thereto.

3. The oil-roasting apparatus as described in claim 2, characterized in that, The fixed ring plate (244) is provided with a first connecting ear plate (245), and the stirring blade (230) is provided with a second connecting ear plate (246). The first connecting ear plate (245) and the second connecting ear plate (246) are respectively provided with a first connecting hole and a second connecting hole of the same size and coaxial. The first connecting hole and the second connecting hole are evenly provided with a plurality of positioning grooves (249) along the circumferential direction. The first connecting ear plate (245) and the second connecting ear plate (246) are aligned and connected and are provided with a fixing pin (247). The surface of the fixing pin (247) is provided with a positioning key (2471) along the axial direction. The positioning key (2471) is inserted into the positioning groove (249) located on the first connecting ear plate (245) and the second connecting ear plate (246) to limit the first connecting ear plate (245) and the second connecting ear plate (246).

4. The oil-roasting apparatus as described in claim 2, characterized in that, The upper extension plate (231) and the lower extension plate (232) are provided with first positioning holes (233) on both sides. Multiple first positioning holes (233) are evenly provided along the sliding direction of the upper extension plate (231) and the lower extension plate (232). The stirring blade (230) is provided with second positioning holes corresponding to the upper extension plate (231) and the lower extension plate (232). The first positioning holes (233) and the second positioning holes are fixed by bolts.

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