A twin-screw oil press capable of increasing oil yield

Abstract

The present invention provides a twin-screw oil press capable of increasing the oil yield. The oil press comprises a pretreatment device and a pressing device. The pretreatment device comprises a breaking device, a ventilation device, an exhaust gas collection device, a feed port and a discharge port. The pressing device comprises a pressing chamber, a pressing screw, a pressing bar, a pressing ring, a scraper, a sensor, a receiver, an external controller and a cake adjustment mechanism. The pressing device is characterized in that the pressing ring is a spur gear type, the pressing bar is a deformable pressing bar, and the blade is arranged on the groove of the pressing ring, and the blade can be controlled to stand up or down by an external controller. The twin-screw oil press capable of increasing the oil yield provided by the present invention has the following beneficial effects: the pretreatment device is installed together with the pressing device, which reduces the energy loss caused by the transportation process after the material is processed. When the pressing bar of the pressing device is trapezoidal, the pressing space is reduced and the extruded material is sheared, thereby increasing the oil yield. When the pressing bar is deformed into a rectangle, the blade can be used to clean the pressing chamber.

Description

Technical Field

[0001] The invention relates to a twin-screw oil press, and more particularly to a twin-screw oil press capable of increasing oil yield. Background Art

[0002] As an extremely important part of the food industry, the oil press has a long history of development. Different materials will be pretreated to varying degrees before oil pressing. General pretreatment methods include crushing, heating, humidification, etc. The volume moisture and temperature of the material are adjusted to ensure the increase in oil yield and improve production efficiency. Currently, most pretreatment steps are carried out in separate processes using different independent equipment before the material is placed in the oil press. From the time of treatment to the time of transportation to the oil press, the moisture and heat in the treated material will inevitably be lost, which will greatly reduce the pretreatment effect of the material.

[0003] The core of the oil press is the power device and the pressing chamber, among which the pressing bar and the pressing screw are the main working parts in the pressing chamber of the oil press. The pressing bar is not only used to support the entire pressing chamber, but also clamps and squeezes the material together with the pressing screw. When the oil press is working, the material is continuously transported to the extrusion chamber formed by the pressing screw and the pressing bar, where it is squeezed, sheared and pushed forward, thus completing the process of extracting oil. At present, there is still room for improvement in the use of the pressing bar, and there is also room for the use of space inside the pressing chamber, which can be further developed to improve the efficiency of oil pressing. In addition, there is also the problem of cleaning during the pressing process. Once the oil residue adheres to the inner wall or accumulates, the machine needs to be stopped and the pressing screw needs to be taken out for cleaning, which has an adverse effect on the progress and efficiency of the oil pressing work. Summary of the invention

[0004] The problem to be solved by the present invention is to improve the effect of pretreatment of materials before oil pressing and to improve the internal structure of the pressing chamber of the oil press, thereby providing a twin-screw oil press capable of increasing the oil yield.

[0005] The main technical solution adopted by the twin-screw oil press capable of increasing the oil yield provided by the present invention is as follows: the oil press is composed of a power device, a pretreatment device, a pressing device and an oil collecting device. The power device is installed on the left side, the pressing device is installed on the right side of the power system, the pressing device is directly connected to the power device and is controlled by the power device, the pretreatment device is installed above the pressing device, the pretreatment device is also directly connected to the pressing device, and the treated material is directly sent to the pressing device, and the oil collecting device is installed below the pressing device to collect the pressed oil and filter the oil residue.

[0006] The above-mentioned pressing device includes a feeding base, a pressing chamber, left and right rotating pressing screws, deformable pressing bars, toothed pressing rings, scrapers, sensors, receivers, external controllers and cake adjusting mechanisms. The feeding base is used to receive pre-treated materials and can control the materials to enter and exit the pressing chamber. The pressing chamber is supported by deformable pressing bars. A sensor is installed inside the pressing chamber to detect whether there are abnormal conditions such as blockage during the operation of the oil press. Once an abnormality occurs, the signal is transmitted to the receiver, and the receiver issues a warning. The right-hand pressing screw is installed in the upper part of the pressing chamber and is assembled from a toothed pressing ring and a multi-stage screw. The left-hand pressing screw is installed in the lower part of the pressing chamber and is also assembled from a toothed pressing ring and a multi-stage screw. The external controller is installed outside the pressing chamber, and the pressing bars and blades can be manually operated from the outside. The cake adjusting mechanism is installed on the rightmost side of the pressing chamber and is used to press the oil residue into cakes and can adjust the thickness of the cakes.

[0007] The above-mentioned pressing chamber is composed of deformable pressing bars, inside of which a sensing chip is placed and controlled by an external controller. When the oil press starts working, the pressing bars are in a trapezoidal shape and are tightly arranged together to form an angular inner wall of the pressing chamber. When the built-in sensor in the pressing chamber senses an abnormal condition, it sends a signal to the receiver, which issues a warning. At this time, the pressing bars are controlled by the external controller to deform into a rectangle, and the inner wall of the pressing chamber becomes flat, which is conducive to eliminating abnormal conditions inside the pressing chamber.

[0008] The toothed pressing ring is installed on the pressing screw, which is a spur gear type. A groove is left on the pressing ring for accommodating the blade. When assembling the pressing screw, the grooves on each toothed pressing ring are arranged at the same horizontal position to facilitate the installation of the blade. When the pressing screw is installed in the pressing chamber, the toothed pressing ring on the right-hand pressing screw and the toothed pressing ring on the left-hand pressing screw mesh with each other, which does not affect the normal operation of the oil press. The blade is installed in the groove of the pressing ring through the knife holder. The knife holder is placed on the groove plane and has a small range of up and down movement. The blade is controlled by an external controller, and the length of the blade is slightly shorter than the length of the pressing screw. When the oil press starts to operate, the blade is retracted and placed flat in the groove of the pressing ring, which does not affect the pressing chamber. When the built-in sensor detects an abnormality, the external controller controls the pressing bar to deform into a rectangle and controls the blade to stand up at the same time. The tip of the blade contacts the surface of the pressing bar, that is, the inner wall of the pressing chamber. Because the blade holder can move in a small range, the blade does not affect the operation of the oil press when the screw rotates, and the pressing chamber can be cleaned smoothly.

[0009] The above-mentioned pretreatment device is installed above the pressing device, and consists of a dispersing device, a ventilation device, a waste gas collecting device, a feed port and a discharge port. The feed port of the pretreatment device is the feed port of the entire oil press and is installed on the upper right side of the pretreatment device. The dispersing device is directly connected to the feed port and is installed below the feed port. The ventilation device is installed on the right side of the dispersing device. The discharge port of the pretreatment device is installed on the lower left side, which is also the discharge port of the dispersing device. The discharge port is directly connected to the pressing device, and the waste gas collecting device is installed on the left side of the dispersing device. When oil pressing starts, the material enters the dispersing device through the feed port, and at the same time, the ventilation device passes the tempered steam into the dispersing device to process the material in many aspects. The treated material enters the feed base from the discharge port, and then enters the pressing device for oil pressing. The waste gas is discharged from the exhaust port and the tail of the intake pipe into the waste gas collecting device.

[0010] The ventilation device is composed of a temperature regulator, a humidifier, an air inlet, a steam storage tank, a water tank, a sensor and an external controller. The steam storage tank is connected to the air inlet of the ventilation device. According to the processing requirements of different materials, the temperature regulator and the humidifier of the ventilation device are adjusted to process the introduced steam, and then the treated steam is introduced into the dispersion device to process the material. During the adjustment process, the temperature and humidity information is displayed on the external display screen through the built-in sensor.

[0011] The above-mentioned dispersing device is composed of a screw, a temperature regulator, an air inlet pipe, an exhaust port and a rotary joint. The internal single screw can be replaced through a rotary joint, and the screw type can be replaced according to different types of materials. The dispersing device is connected to the power device. When the pressing device is operating, the rotation of the screw is controlled by an external controller. The air inlet pipe of the dispersing device is directly connected to the ventilation device to directly receive the treated steam. The air inlet pipe runs through the dispersing device. Considering the heat loss of the treated steam, the air inlet pipe is provided with openings of different degrees, and a temperature regulator is installed on the outer wall of the air inlet pipe. The temperature of the steam can be adjusted during its passage. The material being processed is discharged from the discharge port into the pressing device under the extrusion of the screw, and the waste gas of the treated material is discharged from the left side of the dispersing device through the tail of the air inlet pipe and the exhaust port.

[0012] The above technical solution of the present invention can bring the following advantages:

[0013] 1. The present invention can effectively reduce the energy loss caused by pretreatment and transportation. By directly connecting the pretreatment device with the pressing device, the processed material can be directly sent to the pressing chamber for pressing, which greatly shortens the transportation time of the material from processing to pressing. The air inlet pipe of the scattering device is provided with air holes of different sizes according to the steam transportation distance, so as to ensure that the material is evenly processed in the scattering device, and a thermostat is also installed on the outer wall of the pipe to maintain the steam temperature during the ventilation process.

[0014] 2. The present invention can adjust the pretreatment for different kinds of materials. The ventilation device installed in the oil press is equipped with a temperature regulator and a humidifier. By passing steam into the ventilation device, the properties of the steam can be adjusted, so that the temperature and humidity of the oil pressing material can be adjusted according to requirements. Since the steam introduced will not have any other effects on the material except for the physical properties such as temperature and humidity, the screw installed in the scattering device can also be replaced through a rotary joint. Therefore, different pretreatment methods can be adjusted for different materials, which is more flexible.

[0015] 3. The structure in the pressing device of the present invention can effectively improve the oil yield. The pressing bar used in the pressing device is a deformable pressing bar, which is controlled by an external controller, and the pressing ring used by the pressing screw is a spur gear type. When the oil press starts working, the pressing bar is trapezoidal in shape, and the inner wall of the pressing chamber has edges and corners. This design can reduce the space in the pressing chamber and further squeeze the material. The trapezoidal pressing bar and the toothed pressing ring contact each other when the pressing screw rotates, shearing and squeezing the material, further improving the oil yield of the material. At the same time, although the spur gear type pressing ring reduces the space in the pressing chamber, the pressing rings of the twin screws will mesh with each other during installation, which will not affect the operation of the oil press.

[0016] 4. The pressing device of the present invention can effectively clean the inner wall of the pressing chamber. Each toothed pressing ring is provided with a groove for installing a long rectangular blade. The groove is kept at the same horizontal line when installing the pressing screw, thereby ensuring the installation of the blade. When the oil pressing starts, the blade is laid flat without affecting the rotation of the pressing screw. The pressing device has a built-in sensor. When oil residue is blocked during the oil pressing process, the sensor sends a signal to an external receiving device, which issues a warning. The feed base is closed and stops inputting materials. The shape of the pressing bar is changed into a rectangle through an external controller. The inner wall of the pressing chamber no longer has edges and corners, but becomes flat, and the pressing space is released. At this time, the blade is erected through an external controller, and the tip of the blade contacts the inner wall of the pressing chamber of the rectangular pressing bar. The rotation of the pressing screw drives the blade to rotate, and during the rotation, the oil residue adhering to the inner wall is scraped off, thereby achieving effective cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall schematic diagram of the twin screw oil press.

[0018] Figure 2 This is an enlarged schematic diagram of the pretreatment device

[0019] Figure 3 This is a schematic diagram of the location of the air inlet hole of the scattering device

[0020] Figure 4 This is the main view of the toothed press ring with the blades retracted.

[0021] Figure 5This is a schematic diagram of the press chamber when the pressing bar is trapezoidal

[0022] Figure 6 This is a side view of the toothed press ring with the blades standing upright.

[0023] Figure 7 This is a schematic diagram of the press chamber when the pressing bar is rectangular

[0024] In the figure: 1. Motor, 2. V-belt, 3. Torque distributor, 4. Feed inlet, 5. Ventilation device, 6. Breaking device,

[0025] 7. Breaking device base, 8. Feeding base, 9. Pressing screw, 10. Pressing chamber, 11. Cake adjustment mechanism, 12. Pressing device support frame,

[0026] 13. Oil collecting box, 14. Steam storage tank, 15. Ventilation device air inlet pipe, 16. Ventilation device display screen, 17. External adjustment knob, 18. Humidifier water storage tank, 19. Dispersing device air inlet pipe, 20. Screw, 21. Rotary joint, 22. Exhaust port, 23. Discharge port, 24. Toothed pressing ring, 25. Knife holder, 26. Blade, 27. Pressing bar, 28. Filter, 29. Outer wall of pressing chamber, 30. Trapezoidal pressing bar, 31. Rectangular pressing bar, 32. Waste gas collection device. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] A twin-screw oil press capable of increasing oil yield, such as Figure 1 As shown, it is composed of a power device, a pretreatment device, a pressing device and an oil collecting device. The power device is installed on the left side, the pressing device is installed on the right side of the power device, the pretreatment device is installed above the pressing device, and the oil collecting device is installed below the pressing device. The power device includes a generator 1, a V-belt 2 and a torque distributor 3. The oil collecting device includes an oil collecting tank 13 and a filter 28. The pretreatment device is as shown in Figure 2As shown, it is composed of a feed port 4, a discharge port 23, a waste gas collecting device 32, a ventilation device 5 and a dispersing device 6. The ventilation device 5 includes a steam storage tank 14, an air inlet pipe 15, a display screen 16, a water storage tank 18, a sensor, an external controller, a humidifier and a temperature regulator. The ventilation device 5 adjusts the temperature and humidity of the steam introduced through a built-in humidifier and a temperature regulator, and the data during the processing is displayed on the external display screen 16. The steam introduced is stored in the air storage tank 14 and enters the ventilation device 5 through the air inlet pipe 15. The water required for adjusting the humidity is stored in the water storage tank 18. The treated steam enters the dispersing device 6 through the air inlet pipe 19. The dispersing device 6 includes an air inlet pipe 19, a screw 20, a rotary joint 21, a temperature regulator and an exhaust port 22. The air inlet pipe 19 runs through the dispersing device 6, and the air inlet pipe 19 is provided with air holes of different sizes according to different positions, such as Figure 3 As shown, while steam is introduced into the interior, the motor is started to make the screw 20 start to rotate, and the material is fed into the feed port 4. The material is adjusted and processed in the scattering device 6 to increase its oil yield, and the exhaust gas is discharged from the tail of the intake pipe 19 and the exhaust port 22 into the exhaust gas collection device 32. The screw 20 can be replaced by a rotary joint 21. The pressing device includes a feeding base 8, a pressing screw 9, a pressing chamber 10, a cake adjustment mechanism 11, a pressing ring 24, a blade 26, a sensor, a receiver, an external controller and a pressing bar 27. The pressing chamber 10 is composed of the pressing bar 27 as an inner wall and a support. The pressing bar 27 can be controlled by the external controller to deform into a trapezoid 30 or a rectangular shape. The pressing ring 24 is provided with a groove for installing a blade 26. The blade 26 is placed in the groove through a knife holder 25. The knife holder 25 can move up and down in a small range on the groove. The blade 26 is controlled by an external controller to stand up and put down. When the pressing bar is trapezoidal 30, the blade 26 is retracted without affecting the normal pressing process. When the sensor senses that the pressing chamber 10 is blocked, the external controller controls the pressing bar to deform into a rectangle 31. At this time, the blade 26 is controlled to stand up and contact the surface of the rectangular pressing bar 31, and rotate to clean the inner wall of the pressing chamber 10. The feeding base 8 can control the material to enter the pressing chamber 10. The cake adjustment mechanism 11 is used to press the oil residue into a cake shape for easy processing.

[0029] The specific working process of the present invention is as follows: before preparing for oil pressing, the pressing screw 9 in the pressing chamber 10 is assembled, the grooves of the toothed pressing ring 24 on the pressing screw 9 are kept in the same plane and aligned, and the long rectangular blade 26 is placed in the groove of the pressing ring 24 through the blade holder 25, and the blade 26 is controlled by an external controller to be placed flat in the groove, as shown in FIG. Figure 4As shown, the assembled pressing screw 9 is installed into the pressing chamber 10, and it is confirmed whether the inner wall of the pressing chamber 10, that is, the pressing strips 27, are trapezoidal pressing strips 30. After confirmation, the ventilation device 5 is started, and the steam is adjusted according to the adjustment requirements of the material. The valve of the gas storage tank 14 is opened, and the steam enters the ventilation device 5 through the air inlet pipe 15. The switch of the water storage tank 18 is turned on, and the temperature and humidity of the steam inside the ventilation device 5 are controlled by the external adjustment button 17. The built-in sensor of the ventilation device will feed back the water content and temperature of the steam at this time to the external display screen for easy adjustment. After the adjustment is completed, the motor 1 is turned on, and the pressing screw 9 of the pressing chamber 10 of the oil press and the screw 20 of the dispersing device 6 are started, and the material is sent from the feed port 4 into the dispersing device 6. At the same time, the air inlet pipe 19 is opened to pass the adjusted steam into the dispersing device 6. The air inlet pipe 19 is opened according to the transmission distance. Through holes of different degrees are provided to ensure that the influence of steam on the material at different positions is almost the same. At the same time, a temperature regulator is also installed on the outer wall of the air inlet pipe 19 to reduce the heat loss of steam in the dispersing device. Since the air inlet pipe 19 passes through the dispersing device 6, the steam that has not completely entered the dispersing device 6 will be discharged from the tail end of the air inlet pipe 19 and enter the exhaust gas collecting device 32. The material is sheared into small pieces in the dispersing device 6 under the influence of the rotation of the screw 20. The introduced steam adjusts the temperature and humidity of the material to a certain extent. The temperature and humidity of the steam can be adjusted according to the different characteristics of different materials, and the type of the screw 20 can be replaced by the rotary joint 21 as required. The material processed in the dispersing device 6 enters the feed base 8 through the discharge port 23 at the tail end, and the exhaust port 22 is opened at the same time to discharge the exhaust gas after the material is processed and send it into the exhaust gas collecting tube 32.

[0030] The feed base 8 can control the processed material to enter the pressing chamber 10. When the processed material enters the pressing chamber 10, the inner wall is a trapezoidal pressing bar 30. The edges and corners of the inner wall of the pressing chamber 10 reduce the pressing space to a certain extent. At the same time, the tooth tips of the toothed pressing ring 24 contact with the trapezoidal pressing bar 30 during the rotation of the pressing screw 9, and further shear and squeeze the material, thereby improving the oil yield of the material. The material is continuously transported to the extrusion cavity formed by the pressing screw 9 and the pressing bar 27, and is squeezed, sheared and pushed forward, thereby completing the process of squeezing oil. The squeezing situation in the pressing chamber 10 is as shown in FIG. Figure 5As shown, the oil produced during the extrusion flows into the oil collecting box 13 below the pressing chamber 10, and the accompanying oil residue is filtered out by the filter screen 28 on the oil collecting box 13. The material is pushed to the rear end of the pressing chamber 10 by the rotation of the pressing screw 9, and the waste material after the oil pressing is pressed into a cake shape by the cake adjusting mechanism 11 for easy processing. During the oil pressing process, if the material adheres or is blocked, the operation of the oil press will be affected, and the built-in sensor of the pressing chamber 10 will sense the situation and transmit the signal to the external receiver, which issues a warning. At this time, the feed port 4 and the feed port of the feed base 8 are closed to prevent the material from further entering the pressing chamber 10. The pressing bar 27 in the pressing chamber 10 is controlled by the external controller to be deformed into a rectangular pressing bar 31, and the external controller controls the blade 26 to stand up, as shown in FIG. Figure 6 As shown, the knife tip contacts the surface of the rectangular pressing bar 31, i.e., the inner wall of the pressing chamber 10. Figure 7 As shown, since the knife holder 25 can float up and down in a small range, the blade 26 does not affect the operation of the oil press during its movement. The pressing screw 9 rotates and drives the blade 26 to rotate, so as to clean the oil residue adhered to the surface. After rotating for a period of time, the scraped oil residue will fall onto the filter screen 28. According to the remaining amount of oil residue on the filter screen 28, it can be considered whether it is necessary to stop the operation of the oil press and replace the filter screen 28. If no replacement is required, use an external controller to control the blade 26 to be retracted and placed flat on the groove of the pressing ring 24, and then control the pressing bar 27 to be transformed into a trapezoidal pressing bar 31 again, open the feed port 4 and the feed port of the feed base 8, let the material re-enter the pressing chamber 10, and resume the normal oil pressing process until the task index is completed, turn off the ventilation device 5 of the oil press power device, etc., and take out the screw 20 and the pressing screw 9 for cleaning.

[0031] While specific embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A twin-screw oil press capable of increasing oil yield, characterized in that: The oil press consists of a power unit, a pretreatment unit, a pressing unit, and an oil collecting unit. The pressing unit is installed on the right side, the pretreatment unit is installed above the pressing unit and is communicated with the pressing unit, the pretreatment unit processes the material by means of screw crushing and ventilation conditioning, the power unit is installed on the left side and is connected to the pressing unit, the oil collecting unit includes an oil collecting box and a filter, and the oil collecting unit is installed below the pressing unit; the pressing unit includes a feeding base, a pressing chamber, a pressing screw, a pressing bar, a pressing ring, a scraper, a sensor, a receiver, an external controller and a cake adjusting mechanism; the pressing bar can be controlled to deform by an external controller; when pressing starts, the pressing bar is trapezoidal, which can reduce the pressing space in the pressing device and increase the oil yield during pressing. When foreign matter appears during pressing, the sensor will start to alarm, and the pressing bar will be controlled to deform into a rectangle to release the pressing space.

2. The twin-screw oil press capable of increasing oil yield according to claim 1, characterized in that: The pretreatment device comprises a scattering device, a feed port, a discharge port, a waste gas collecting device and a ventilation device.

3. The twin-screw oil press capable of increasing oil yield according to claim 2, characterized in that: The dispersing device comprises a screw, a rotary joint, an air inlet pipe, an air outlet, and a temperature regulator; the single screw is taken out or placed by means of the rotary joint, and the single screw disperses the material to different degrees as required by rotating, thereby increasing its oil yield.

4. The twin-screw oil press capable of increasing oil yield according to claim 2, characterized in that: The feed inlet is the feed inlet of the entire oil pressing equipment, and the discharge port is communicated with the pressing device, so that the processed materials can be directly sent to the pressing device for oil pressing.

5. The twin-screw oil press capable of increasing oil yield according to claim 3, characterized in that: The air inlet pipe connects the ventilation device and the dispersion device, and the air inlet pipe runs through the dispersion device. The air inlet pipe is provided with through holes of different sizes according to different transmission distances, and a temperature regulator is installed on the outer wall of the pipe to ensure that the temperature of the steam entering the dispersion device does not change.

6. The twin-screw oil press capable of increasing oil yield according to claim 2, characterized in that: The ventilation device is installed on the right side of the dispersing device. The temperature and moisture content of the steam introduced into the ventilation device can be adjusted according to the different types of materials. The ventilation device is connected to the air inlet pipe of the dispersing device, and the adjusted steam can be directly sent into the dispersing device to adjust the temperature and humidity of the material being processed in the dispersing device. The exhaust gas is sent into the exhaust gas collection device from the tail end of the air inlet pipe and the exhaust port.

7. The twin-screw oil press capable of increasing oil yield according to claim 1, characterized in that: The pressing ring is a toothed pressing ring with a spur gear tooth shape. A rectangular groove is provided on the outer side of the pressing ring for accommodating a scraper. When pressing begins, the pressing ring is staggered with the trapezoidal pressing bars to further reduce the pressing space and shear the material. When assembling the pressing screw, the pressing ring should keep the grooves on the same horizontal line.

8. The twin-screw oil press capable of increasing oil yield according to claim 1, characterized in that: The pressing screws are divided into two, left-rotating and right-rotating, which are installed in the pressing device up and down respectively. Each pressing ring is in the shape of a spur gear and is provided with a groove. The pressing rings can mesh with each other. When the pressing device is in operation, the pressing screws squeeze each other and the pressing rings mesh with each other. The scraper is installed in the groove of the toothed pressing ring through a tool holder. The tool holder has a certain up and down floating range on the plane of the groove, and the scraper can be controlled to stand up or retract by an external controller. When the pressing bar is trapezoidal, the scraper is retracted. When the pressing bar is rectangular, the pressing space is released, and the scraper stands up to contact the surface of the rectangular pressing bar and rotates to clean the oil residue.

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