A wooden oil material squeezing device and method for improving oil yield

Abstract

The application discloses a kind of woody oil plants squeezing device and method for improving oil yield, to solve the deficiency that moisture and temperature control are not improper in the process of woody oil plants squeezing, resulting in low oil yield.The application includes barrel, pressing screw, feeding hopper, and the pressing screw is installed in the barrel, and the pressing screw is provided with heat exchange runner for circulating heat exchange medium, and the heat exchange runner is arranged axially.The temperature of the barrel is kept between 65 DEG C-90 DEG C by cooling the pressing screw through the heat exchange runner, to avoid the decrease of oil yield caused by too low temperature, and to avoid the deterioration of oil quality caused by too high temperature.The temperature control in the process of woody oil plants squeezing is proper, which is conducive to improving oil yield.

Description

Technical Field

[0001] This invention relates to an oil pressing apparatus, and more specifically, to an apparatus and method for pressing woody oilseeds that is advantageous in increasing oil yield. Background Technology

[0002] We have abundant woody oilseed resources, including camellia, walnut, olive, and torreya. These woody oilseeds are mainly planted in forested areas of low mountains and hills, which greatly alleviates the pressure on my country's arable land resources. The economic value of woody oilseeds is greatly enhanced after processing. The main processing method is pressing, with screw pressing being the most common method currently used. However, during the pressing process, improper control of moisture and temperature can lead to low oil yields. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the present invention provides a woody oilseed pressing device and method that is conducive to improving the oil yield. Proper control of moisture and temperature during the woody oilseed pressing process is beneficial to improving the oil yield.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a woody oilseed pressing device that is beneficial to improving the oil yield, including a pressing chamber, a pressing screw, and a feeding hopper. The pressing screw is installed in the pressing chamber, and a heat exchange channel for circulating heat exchange medium is provided inside the pressing screw. The heat exchange channel is arranged axially.

[0005] During the pressing process of woody oilseeds, the temperature rises within the pressing chamber. Excessive temperature during pressing will cause the extracted oil to darken and deteriorate in quality. The pressing screw is cooled through a heat exchange channel, maintaining the temperature within the pressing chamber between 65℃ and 90℃. This prevents the oil yield from decreasing due to excessively low temperatures, while also avoiding the quality degradation caused by excessively high temperatures. Proper temperature control during the pressing process of woody oilseeds is beneficial for improving the oil yield.

[0006] Preferably, the pressing screw includes a rotating part and a fixed part. The rotating part is rotatably connected to the fixed part. The heat exchange channel is arranged inside the rotating part and is U-shaped. The fixed part is provided with an inlet annular cavity and an outlet cavity. The outer wall of the rotating part is provided with an inlet hole that connects one end of the heat exchange channel and the inlet annular cavity. The other end of the heat exchange channel is connected to the outlet cavity. The fixed part is connected with an inlet pipe and an outlet pipe. The inlet pipe is connected to the inlet annular cavity, and the outlet pipe is connected to the outlet cavity.

[0007] Cooling water is delivered to the inlet annular cavity through the inlet pipe, flows into the heat exchange channel through the liquid inlet hole, and exchanges heat with the pressing screw during its flow in the heat exchange channel. Finally, it flows out to the outlet cavity and is discharged from the outlet pipe. This structural design ensures reliable water flow during the rotation of the pressing screw.

[0008] Preferably, a rotating pipe is installed inside the feeding hopper, and several branch pipes connected to the rotating pipe are connected to the rotating pipe. Several air outlets are provided on the branch pipes, and the rotating pipe is connected to a steam conveying pipe.

[0009] To address the current issue of low oil yield, analysis revealed that the moisture content of the crushed woody oilseeds after drying is too low. Generally, crushed woody oilseeds are not further watered before pressing, leading to a low oil yield. Some manufacturers directly add water to the crushed woody oilseeds, resulting in uneven mixing and affecting the oil yield during pressing. This application addresses this problem by using a steam delivery pipe to supply steam into a rotating tube, adding water to the crushed woody oilseeds using steam. Simultaneously, the rotating tube rotates, and the branch pipes stir the woody oilseeds, ensuring even mixing. Furthermore, the steam provides heat to the woody oilseeds, ensuring they enter the pressing chamber hot, which helps improve the oil yield.

[0010] Preferably, the lower end of the rotating pipe is connected to the drain pipe, and the drain pipe and the rotating pipe are rotatably connected.

[0011] The installation of the drain pipe facilitates the discharge of water after the steam inside the rotating pipe has cooled.

[0012] Preferably, a bracket is installed above the feeding hopper, and a ring seat is connected to the bracket. The ring seat and the rotating pipe are rotatably fitted together. A ventilation ring groove is provided on the inner wall of the ring seat, and a ventilation hole is provided at the corresponding position of the ventilation ring groove on the rotating pipe. The ventilation hole connects the ventilation ring groove and the rotating pipe. A steam conveying pipe is connected to the ring seat and communicates with the ventilation ring groove.

[0013] Steam is delivered to the ventilation ring groove through the steam delivery pipe, and then enters the rotating pipe through the ventilation hole. During the rotation of the rotating pipe, the ventilation hole is always connected to the ventilation ring groove to ensure reliable airflow.

[0014] Preferably, a bracket is installed above the hopper, a drive motor is connected to the bracket, a drive gear is installed on the output shaft of the drive motor, and a driven gear is installed on the rotating tube, with the drive gear and the driven gear meshing and transmitting power.

[0015] The drive motor rotates, causing the rotating tube to rotate smoothly and reliably.

[0016] Preferably, one end of the pressing chamber is connected to the slag outlet seat, and one end of the pressing screw is installed on the slag outlet seat. The slag outlet seat is provided with a slag outlet, and a slag outlet ring is installed between the slag outlet on the slag outlet seat and the pressing chamber. A slag outlet gap is provided between the inner wall of the slag outlet ring and the outer wall of the pressing screw. Several air blowing holes are provided on the inner wall of the slag outlet ring and are inclined towards the slag outlet. An air inlet pipe connected to the air blowing holes is connected to the slag outlet seat.

[0017] After the woody oilseeds are pressed, the dried oil is conveyed to the slag outlet through the slag outlet gap between the slag outlet ring and the press screw, and falls from the slag outlet. The air inlet pipe delivers high-pressure airflow, which blows from the air blowing hole towards the slag outlet gap, pushing the dried oil in the gap toward the slag outlet. This facilitates the discharge of the dried oil and prevents it from clogging the pressing chamber, causing overheating and affecting the quality of the oil.

[0018] Preferably, the inner wall of the slag discharge ring is provided with spiral slag guiding protrusions, the outer wall of the slag discharge ring is provided with a meshing toothed ring, a drive shaft is installed at the upper part of the slag discharge port, two drive gears are provided on the drive shaft, a gear disk is installed on the pressing screw, the gear disk meshes with one drive gear for transmission, and the other drive gear meshes with the meshing toothed ring for transmission.

[0019] The rotation of the pressing screw drives the slag discharge ring to rotate. The spiral guide strips on the inner wall of the slag discharge ring guide and transport the oil residue, which helps the oil residue move towards the slag discharge port and avoids oil residue blockage.

[0020] A method for pressing woody oilseeds that improves oil yield involves using a woody oilseed pressing device to extract oil, and includes the following steps:

[0021] S1, Remove the bark from the woody oilseeds;

[0022] S2, dried and peeled woody oilseeds;

[0023] S3, crush the dried woody oilseeds;

[0024] S4, load the crushed woody oil material into the feeding hopper;

[0025] S5, woody oilseeds enter the pressing chamber from the hopper. The pressing screw drives the woody oilseeds to be transported and pressed at the same time, squeezing out the oil from the woody oilseeds. Cooling water is introduced into the pressing screw to cool the pressing screw, so that the temperature inside the pressing chamber is controlled between 65℃ and 90℃.

[0026] During the pressing of woody oilseeds, cooling water is introduced into the press screw to cool it, keeping the temperature inside the pressing chamber between 65℃ and 90℃. This prevents the oil yield from decreasing due to excessively low temperatures, while also preventing the oil quality from deteriorating due to excessively high temperatures. Proper temperature control during the pressing process of woody oilseeds is beneficial for increasing the oil yield.

[0027] As a preferred embodiment, in S4, steam is added to the woody oil material in the upward hopper and the woody oil material is stirred to control the moisture content of the woody oil material at 6%-8% and the temperature at 50℃-70℃.

[0028] Properly controlling the moisture content of the woody oilseeds in the hopper is beneficial for increasing the oil yield. It prevents the oil droplets from being difficult to extract due to excessively low moisture content, while also preventing the water from being easily extracted while the oil is difficult to extract due to excessively high moisture content. Properly controlling the temperature of the woody oilseeds in the hopper, ensuring the pressing temperature remains above 65 degrees Celsius, prevents low temperatures from resulting in a low oil yield.

[0029] Compared with the prior art, the beneficial effects of the present invention are: (1) the moisture and temperature are properly controlled during the pressing of woody oilseeds, which is conducive to improving the oil yield; (2) the oil residue will not clog during the pressing process, thus avoiding the oil residue clogging and affecting the quality of the oil. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0031] Figure 2 This is a partially enlarged schematic diagram of the slag outlet position of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0033] Figure 4 This is a partially enlarged schematic diagram of the location of the feeding hopper in this invention;

[0034] In the diagram: 1. Pressing chamber, 2. Pressing screw, 3. Feeding hopper, 4. Heat exchange channel, 5. Rotating part, 6. Fixed part, 7. Water inlet ring cavity, 8. Water outlet cavity, 9. Liquid inlet hole, 10. Water inlet pipe, 11. Water outlet pipe, 12. Slag outlet seat, 13. Slag outlet, 14. Slag outlet ring, 15. Slag outlet gap, 16. Air blowing hole, 17. Air inlet pipe, 18. Spiral slag guide protrusion, 19. Meshing gear ring, 20. Drive shaft, 21. Drive gear, 22. Gear disk, 23. Ventilation groove, 24. Rotating pipe, 25. Branch pipe, 26. Air outlet, 27. Drain pipe, 28. Support, 29. Ring seat, 30. Ventilation ring groove, 31. Ventilation hole, 32. Drive motor, 33. Drive gear, 34. Driven gear, 35. Positioning frame, 36. Positioning sleeve. Detailed Implementation

[0035] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0036] Example 1: A woody oilseed pressing device that improves oil yield (see attached) Figure 1 Appendix Figure 2 The device includes a pressing chamber 1, a pressing screw 2, and a feeding hopper 3. The pressing screw is installed in the pressing chamber and has a heat exchange channel 4 for the flow of heat exchange medium. The heat exchange channel is axially arranged.

[0037] The pressing screw includes a rotating part 5 and a fixed part 6. The rotating part is rotatably connected to the fixed part. A heat exchange channel is located inside the rotating part and is U-shaped. The fixed part has an inlet annular cavity 7 and an outlet cavity 8. The outer wall of the rotating part has an inlet hole 9 connecting one end of the heat exchange channel and the inlet annular cavity. The other end of the heat exchange channel is connected to the outlet cavity. An inlet pipe 10 and an outlet pipe 11 are connected to the fixed part. The inlet pipe is connected to the inlet annular cavity, and the outlet pipe is connected to the outlet cavity. A water temperature detector is installed in the outlet cavity to detect the temperature of the water flowing out of the heat exchange channel, which facilitates the control of the temperature inside the pressing chamber. The flow rate and volume of the cooling water are adjusted according to the detected temperature.

[0038] One end of the pressing chamber is connected to the slag outlet seat 12, and one end of the pressing screw is installed on the slag outlet seat. The slag outlet seat is provided with a slag outlet 13. A slag outlet ring 14 is installed between the slag outlet on the slag outlet seat and the pressing chamber. A slag outlet gap 15 is provided between the inner wall of the slag outlet ring and the outer wall of the pressing screw. Several air blowing holes 16 are provided on the inner wall of the slag outlet ring and are inclined towards the slag outlet. An air inlet pipe 17 connected to the air blowing holes is connected to the slag outlet seat.

[0039] The inner wall of the slag discharge ring is provided with spiral slag guiding protrusions 18, and the outer wall of the slag discharge ring is provided with a meshing gear ring 19. A drive shaft 20 is installed at the upper part of the slag discharge port, and two drive gears 21 are provided on the drive shaft. A gear disk 22 is installed on the pressing screw. The gear disk meshes with one drive gear, and the other drive gear meshes with the meshing gear ring. The outer wall of the slag discharge ring is provided with an annular ventilation groove 23, and the air blowing holes are all used to connect to the ventilation groove. The air inlet pipe is connected to the ventilation groove.

[0040] The fixed part on the pressing screw is fastened to the slag outlet seat. The fixed part is provided with an installation groove, and one end of the rotating part is rotatably installed in the installation groove. The water outlet chamber is located at the bottom of the installation groove, and the water inlet annular chamber is located on the inner wall of the installation groove.

[0041] A method for pressing woody oilseeds that improves oil yield involves using a woody oilseed pressing device to extract oil, and includes the following steps:

[0042] S1, Remove the bark from the woody oilseeds;

[0043] S2, dried and peeled woody oilseeds;

[0044] S3, crush the dried woody oilseeds;

[0045] S4, load the crushed woody oil into the feeding hopper; add steam to the woody oil in the feeding hopper and stir the woody oil to control the moisture content of the woody oil at 6%-8% and the temperature at 50℃-70℃.

[0046] S5, woody oilseeds enter the pressing chamber from the hopper. The pressing screw drives the woody oilseeds to be transported and pressed at the same time, squeezing out the oil from the woody oilseeds. Cooling water is introduced into the pressing screw to cool the pressing screw, so that the temperature inside the pressing chamber is controlled between 65℃ and 90℃.

[0047] Taking Torreya grandis as an example, the moisture content of woody oilseeds in S4 is controlled at around 7%, and the temperature is controlled at around 60℃. During pressing, the air inlet pipe delivers high-pressure airflow, which blows from the air blowing hole to the slag discharge gap, pushing the oil residue in the slag discharge gap toward the slag discharge port. The pressing screw rotates, driving the slag discharge ring to rotate. The spiral guide strips on the inner wall of the slag discharge ring guide and transport the oil residue, pushing it toward the slag discharge port.

[0048] Example 2: A woody oilseed pressing device that improves oil yield (see attached) Figure 3 Appendix Figure 4 The structure is similar to that of Embodiment 1, with the main difference being that a rotating pipe 24 is installed inside the feeding hopper in this embodiment. Several branch pipes 25 connected to the rotating pipe are connected to the rotating pipe, and several air outlets 26 are provided on the branch pipes. The rotating pipe is connected to a steam conveying pipe. A drain pipe 27 is connected to the lower end of the rotating pipe. The drain pipe is inclined and rotatably connected to the rotating pipe. A bracket 28 is installed above the feeding hopper, and a ring seat 29 is connected to the bracket. The ring seat and the rotating pipe are rotatably fitted together. A ventilation ring groove 30 is provided on the inner wall of the ring seat. A ventilation hole 31 is provided at the corresponding position of the ventilation ring groove on the rotating pipe. The ventilation hole connects the ventilation ring groove and the rotating pipe. The steam conveying pipe is connected to the ring seat and communicates with the ventilation ring groove. A drive motor 32 is connected to the bracket. A drive gear 33 is installed on the output shaft of the drive motor, and a driven gear 34 is installed on the rotating pipe. The drive gear and the driven gear mesh and transmit power. A positioning frame 35 is installed inside the feeding hopper, and a positioning sleeve 36 is set in the middle of the positioning frame. The rotating tube is movably connected to the positioning sleeve. The upper end of the rotating tube is closed, and the lower end of the rotating tube is open and connected to the drain pipe. Other structures are the same as in Embodiment 1.

[0049] This application uses a steam conveying pipe to deliver steam into a rotating pipe, and uses steam to add water to the crushed woody oilseeds. While adding steam, the rotating pipe rotates, and the branch pipe stirs the woody oilseeds, making them evenly mixed. Moreover, the steam can provide heat to the woody oilseeds, ensuring that the woody oilseeds entering the oil pressing chamber are hot, which is beneficial to improving the oil yield.

[0050] A method for pressing woody oilseeds that improves oil yield is similar in steps to Example 1, with the main differences being the method of supplying steam to the upper hopper and the method of agitating the woody oilseeds in the hopper. In this example, steam is supplied to the rotating pipe through a steam delivery pipe and discharged into the woody oilseeds through the vent on the branch pipe. The branch pipe rotates together with the rotating pipe to agitate the woody oilseeds. Other steps are the same as in Example 1.

[0051] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A wooden oil plant pressing device for improving oil yield, comprising a pressing chamber, a pressing screw, and a feeding hopper, the pressing screw being installed in the pressing chamber, characterized in that, The heat exchange channel is arranged in the screw rod, and the heat exchange channel is arranged axially; one end of the screw rod is connected with the slag discharge seat, and the other end of the screw rod is arranged on the slag discharge seat; the slag discharge seat is provided with a slag discharge port; the slag discharge ring is arranged between the slag discharge port and the screw rod; the slag discharge gap is arranged between the inner wall of the slag discharge ring and the outer wall of the screw rod; the blowing hole is arranged on the inner wall of the slag discharge ring and is inclined to the slag discharge port; the annular air passage is arranged on the outer wall of the slag discharge ring; the blowing hole is communicated with the air passage; the air inlet pipe is communicated with the air passage; the spiral slag guide convex strip is arranged on the inner wall of the slag discharge ring; the meshing gear ring is arranged on the outer wall of the slag discharge ring; the transmission shaft is arranged on the upper part of the slag discharge port; the two transmission gears are arranged on the transmission shaft; the gear disc is arranged on the screw rod; the gear disc is meshed with one transmission gear; the other transmission gear is meshed with the meshing gear ring; after the wood oil is pressed, the oil residue is transported to the slag discharge port through the slag discharge gap between the slag discharge ring and the screw rod, and then falls from the slag discharge port; the air inlet pipe transports high-pressure airflow; the airflow is blown to the slag discharge gap through the blowing hole, so that the oil residue in the slag discharge gap is blown to the slag discharge port, and the oil residue is prevented from being blocked.

2. A wooden oil plant pressing device for improving oil yield according to claim 1, characterized in that, The screw rod comprises a rotating part and a fixed part, the rotating part is rotatably connected to the fixed part, the heat exchange channel is arranged in the rotating part, the heat exchange channel is in a U shape, the fixed part is provided with a water inlet ring cavity and a water outlet cavity, the outer wall of the rotating part is provided with a liquid inlet hole communicated between one end of the heat exchange channel and the water inlet ring cavity, the other end of the heat exchange channel is communicated with the water outlet cavity, the fixed part is connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is communicated with the water inlet ring cavity, and the water outlet pipe is communicated with the water outlet cavity.

3. The wood oil press of claim 1, wherein the wood oil press is characterized by, The rotating pipe is arranged in the feeding hopper, a plurality of branch pipes are connected to the rotating pipe, a plurality of air outlet holes are arranged on the branch pipes, and the rotating pipe is communicated with a steam conveying pipe.

4. The wood oil press of claim 3, wherein the wood oil press is characterized by, The lower end of the rotating pipe is connected with a drain pipe, and the drain pipe is rotatably connected with the rotating pipe.

5. The wood oil press of claim 3, wherein the wood oil press is characterized by, A support is arranged above the feeding hopper, a ring seat is connected to the support, the ring seat is rotatably sleeved with the rotating pipe, an air passage ring groove is arranged on the inner wall of the ring seat, an air passage hole is arranged on the rotating pipe at a position corresponding to the air passage ring groove, the air passage hole is communicated between the air passage ring groove and the rotating pipe, and the steam conveying pipe is connected to the ring seat and communicated with the air passage ring groove.

6. The wood oil press of claim 3, wherein, A driving motor is connected to the support, a driving gear is arranged on the output shaft of the driving motor, a driven gear is arranged on the rotating pipe, and the driving gear and the driven gear are meshed and driven.

7. A method for improving the oil yield of a woody oil plant by pressing, characterized in that, The wood oil pressing device for improving oil yield is used for oil pressing, and the device comprises the following steps: S1, peeling the wood oil; S2, drying the peeled wood oil; S3, crushing the dried wood oil; S4, loading the crushed wood oil into the feeding hopper; S5, the wood oil is transported into the screw rod, the screw rod drives the wood oil to be transported and pressed at the same time, the oil in the wood oil is squeezed out, cooling water is introduced into the screw rod to cool the screw rod, and the temperature in the screw rod is controlled to be between 65 DEG C and 90 DEG C.

8. A method of pressing a woody oil seed to improve oil yield according to claim 7, wherein, In S4, steam is added to the wood oil in the feeding hopper, and the wood oil is stirred to control the water content of the wood oil to be between 6% and 8%, and the temperature of the wood oil to be between 50 DEG C and 70 DEG C.

Images