Pressure plant oil extraction device

Abstract

The application provides a pressure type plant oil extraction device, which comprises a storage cylinder, the bottom end of the storage cylinder is provided with a discharging channel communicated with the cylinder cavity; a roasting mechanism is used for roasting oil-making raw materials; a pre-processing mechanism is used for crushing the oil-making raw materials roasted in the roasting cavity; an extraction mechanism is used for pressing the oil-making raw materials delivered out of the discharging channel, and separating plant oil and oil residue. The pressure type plant oil extraction device provided by the application is provided with a storage cylinder, which can store oil-making raw materials and heat the oil-making raw materials in the cylinder cavity; the roasting mechanism is provided, which can roast the oil-making raw materials through the roller part; the pre-processing mechanism is provided, which can crush the oil-making raw materials roasted in the roasting cavity; and the extraction mechanism is provided, which can press the oil-making raw materials delivered out of the discharging channel and separate plant oil and oil residue.

Description

Technical Field

[0001] This invention belongs to the field of vegetable oil processing technology, and specifically relates to a pressure-type vegetable oil extraction device. Background Technology

[0002] The main methods for extracting vegetable oils include pressing, solvent extraction, supercritical fluid extraction, aqueous solvent extraction, and aqueous enzymatic extraction. With increasing emphasis on healthy eating, the demand for vegetable oils is growing year by year, and the extraction method directly affects the quality and nutritional value of the oil. Traditional pressing and modern solvent extraction each have their own characteristics. Pressing is a traditional extraction method that has been widely used since ancient times. Its principle is to use mechanical force to directly squeeze the oil from the oilseeds. This method is simple and preserves the original flavor of the oil, but it is labor-intensive and the oil yield is lower compared to modern methods.

[0003] In the existing technology, the oil yield of oil extraction equipment varies depending on the selection of raw materials. When dealing with some relatively hard raw materials or those that need to be pre-cooked, the oil yield is low, resulting in poor adaptability and practicality. Summary of the Invention

[0004] This invention provides a pressure-type vegetable oil extraction device, which aims to solve the problems of poor adaptability and practicality of existing pressing-type oil extraction equipment.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a pressure-type vegetable oil extraction device, comprising: A storage cylinder has a cavity with its axis arranged horizontally. The top of the storage cylinder has a feeding channel communicating with the cavity, and the bottom of the storage cylinder has a discharging channel communicating with the cavity. The roasting mechanism is disposed inside the cylindrical cavity and has a drum part coaxially disposed with the cylindrical cavity. The drum part has a roasting chamber, and the side wall of the drum part is provided with a plurality of through holes communicating with the roasting chamber. The roasting chamber is used to roast the oil-making raw materials. The pre-processing mechanism is located at the bottom of the storage cylinder and within the discharge channel. It has multiple crushing sections for crushing the oil-making raw materials after roasting in the roasting chamber. The pressing mechanism is located below the storage cylinder and is connected to the discharge channel. It is used to press the oil-producing raw materials conveyed by the discharge channel and separate the vegetable oil and oil residue.

[0006] In one possible implementation, the roasting mechanism includes: A roasting drum is rotatably disposed inside the drum cavity and coaxially disposed with the storage drum. The inner cavity of the roasting drum is the roasting chamber, which is used to roast the oil-making raw materials. The roasting drum is the drum section. A stir-frying plate is provided, and multiple stir-frying plates are arranged in a ring at intervals along the axis of the stir-frying cylinder on the inner wall of the stir-frying cylinder, for turning the oil-making raw materials in the stir-frying chamber as the stir-frying cylinder rotates; A partition plate is horizontally installed inside the roasting cylinder, dividing the roasting chamber into two semi-cylindrical cavities, namely the upper cavity and the lower cavity. Both ends of the partition plate have fixed sections, and both fixed sections penetrate the inner wall of the roasting cylinder and are fixedly connected to the storage cylinder. The partition plate is provided with a discharge port. The first driver drives the roasting drum to rotate; The storage cylinder has a heating ring on its side wall for heating the oil-making raw materials inside the cylinder cavity.

[0007] In one possible implementation, the roasting drum includes: Two circular rotating plates are provided, and the two circular rotating plates are spaced apart along the axial direction of the storage cylinder. The rotation axis of each circular rotating plate is collinear with the axis of the storage cylinder. The material storage cylinder is provided with multiple connecting rods, which are arranged circumferentially at intervals along the axis of the cylinder. Each connecting rod is connected to two circular rotating plates at both ends, and the gap between two adjacent connecting rods is the through opening. Each of the circular rotating plates is provided with a through hole through which the fixed section of the partition plate passes; One end of the stir-frying plate is connected to the corresponding connecting rod.

[0008] In one possible implementation, the partition plate is provided with an opening and closing structure located at the feed inlet, which is used to transport a batch of oil-making raw materials from the upper cavity to the lower cavity after the raw materials have been roasted.

[0009] In one possible implementation, the pre-processing mechanism includes: Multiple crushing rollers are provided, and the multiple crushing rollers are arranged in a ring along the axis of the storage cylinder. The multiple crushing rollers are all located at the bottom of the storage cylinder. The multiple crushing rollers are arranged in sequence, and two adjacent crushing rollers are interlocked with each other, for crushing the oil-making raw materials after roasting in the roasting chamber. Multiple connecting chains are provided, and each connecting chain is used to connect two adjacent crushing rollers respectively; A second driver is used to drive the multiple crushing rollers to rotate; Each of the crushing rollers has a sprocket at its end for connection to the connecting chain.

[0010] In one possible implementation, the extraction mechanism includes: A support frame is provided below the storage cylinder and has a bearing platform, wherein the bearing platform is provided with an elongated hole that runs vertically through the cylinder. The pressing cylinder is fixedly mounted on the supporting platform and has a pressing chamber. The axis of the pressing chamber is horizontally set. The pressing chamber has a feed inlet that communicates with the discharge channel. The feed inlet is located on the side wall of one end of the pressing cylinder. The other end of the pressing cylinder is a discharge outlet. The bottom end of the pressing cylinder is open. A filter screen is installed below the extraction cylinder and covers the opening at the bottom of the extraction cylinder; The pressing unit is installed inside the pressing cylinder and is used to press the oil-producing raw materials in the pressing chamber and separate the vegetable oil and oil residue. A funnel, located at the bottom of the support platform, is used to drain vegetable oil that has passed through the elongated hole, the opening, and the filter screen. The waste discharge cylinder is connected at one end to the discharge port of the pressing cylinder and is used to receive oil production waste. An oil storage tank, located below the funnel, is used to collect vegetable oil; The waste bin is located at the other end of the waste discharge cylinder and is used to receive oil production waste.

[0011] In one possible implementation, the extraction unit includes: A conical shaft is rotatably disposed inside the pressing cylinder, and the outer diameter of the conical shaft continuously increases from the feed inlet end of the pressing cylinder to the discharge outlet end of the pressing cylinder. The spiral blades are spirally wound around the conical shaft; The third driver is used to drive the conical shaft to rotate.

[0012] In one possible implementation, the pressure vegetable oil extraction device further includes a support frame for supporting and fixing the storage cylinder.

[0013] In one possible implementation, each of the crushing rollers is provided with a plurality of crushing teeth, which are evenly arranged on the outer wall surface of the crushing rollers. The crushing teeth of two adjacent crushing rollers mesh with each other to crush the oil-producing raw materials.

[0014] Compared with the prior art, this implementation includes a storage cylinder for storing oil-producing raw materials and heating the raw materials within the cylinder cavity; a roasting mechanism for roasting the raw materials via a drum section; a pre-processing mechanism for pulverizing the roasted raw materials within the roasting cavity; and a pressing mechanism for pressing the raw materials conveyed through the discharge channel and separating the vegetable oil from the oil residue. This device can adjust the roasting temperature and the pulverization degree of the pre-processing mechanism according to the selection of the oil-producing raw materials, exhibiting good adaptability and practicality. Attached Figure Description

[0015] Figure 1 Explosion-proof diagram of the pressure-type vegetable oil extraction device provided in the embodiment of the present invention. Figure 1 ; Figure 2 Explosion-proof diagram of the pressure-type vegetable oil extraction device provided in the embodiment of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the main structure of the pressure-type vegetable oil extraction device provided in an embodiment of the present invention; Figure 4 for Figure 3 A side view of the pressure-type vegetable oil extraction device shown. Figure 5 This is a schematic diagram of the three-dimensional structure of the light source support used in an embodiment of the present invention. Figure 2 ; Explanation of reference numerals in the attached figures: 10. Storage cylinder; 20. Roasting mechanism; 21. Roasting cylinder; 211. Circular rotating plate; 212. Connecting rod; 22. Stirring plate; 23. Partition plate; 231. Opening and closing structure; 24. First driver; 30. Pre-processing mechanism; 31. Crushing roller; 311. Sprocket; 312. Crushing tooth; 32. Connecting chain; 33. Second driver; 40. Pressing mechanism; 41. Support frame; 42. Pressing cylinder; 43. Filter screen; 44. Pressing unit; 441. Conical rotating shaft; 442. Spiral blade; 443. Third driver; 45. Funnel; 46. Waste discharge cylinder; 47. Oil storage tank; 48. Waste bin; 50. Fixing frame. Detailed Implementation

[0016] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention 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 invention and are not intended to limit the present invention.

[0017] Please refer to the following: Figures 1 to 4The pressure-type vegetable oil pressing device provided by the present invention will now be described. The pressure-type vegetable oil pressing device includes: a storage cylinder 10, a roasting mechanism 20, a pre-processing mechanism 30, and a pressing mechanism 40.

[0018] The storage cylinder 10 has a cavity with its axis arranged horizontally. The top of the storage cylinder 10 is provided with a feeding channel communicating with the cavity, and the bottom of the storage cylinder 10 is provided with a discharging channel communicating with the cavity.

[0019] The roasting mechanism 20 is set inside the cylinder cavity and has a drum part coaxially arranged with the cylinder cavity. The drum part has a roasting chamber and multiple through ports on the side wall of the drum part that connect to the roasting chamber. The roasting chamber is used to roast the oil-making raw materials.

[0020] The pre-processing mechanism 30 is located at the bottom of the storage cylinder 10 and in the discharge channel. It has multiple crushing sections for crushing the oil-making raw materials after roasting in the roasting chamber.

[0021] The pressing mechanism 40 is located below the storage cylinder 10 and is connected to the discharge channel. It is used to press the oil-making raw materials conveyed by the discharge channel and separate the vegetable oil and oil residue.

[0022] The pressure-type vegetable oil extraction device provided in this embodiment, compared with the prior art, is equipped with a storage cylinder 10 for storing oil-producing raw materials and heating the raw materials inside the cylinder. A roasting mechanism 20 is provided to roast the oil-producing raw materials via a drum section. A pre-processing mechanism 30 is provided to pulverize the roasted raw materials inside the roasting chamber. An extraction mechanism 40 is provided to press the oil-producing raw materials conveyed from the discharge channel and separate the vegetable oil from the oil residue. This device can adjust the roasting temperature and the pulverization degree of the pre-processing mechanism 30 according to the selection of the oil-producing raw materials, exhibiting good adaptability and practicality.

[0023] In some embodiments, the roasting mechanism 20 described above may employ, for example... Figures 1 to 4 The structure shown. See also Figures 1 to 4The roasting mechanism 20 includes a roasting cylinder 21, a stir-frying plate 22, a partition plate 23, and a first driver 24. The roasting cylinder 21 is rotatably disposed within the cylinder cavity, coaxially arranged with the storage cylinder 10. The inner cavity of the roasting cylinder 21 is the roasting chamber, used for roasting the oil-producing raw materials. The roasting cylinder 21 is a drum section. Multiple stir-frying plates 22 are arranged in pairs, spaced annularly along the axis of the roasting cylinder 21 on the inner wall of the roasting cylinder 21, used to stir the oil-producing raw materials within the roasting chamber as the roasting cylinder 21 rotates. The partition plate 23 is horizontally disposed within the roasting cylinder 21, dividing the roasting chamber into two semi-cylindrical cavities, an upper cavity and a lower cavity. Both ends of the partition plate 23 have fixed sections, which penetrate the roasting cylinder 21 and are fixedly connected to the inner wall of the storage cylinder 10. The partition plate 23 has a discharge port. The first driver 24 drives the roasting cylinder 21 to rotate.

[0024] The storage cylinder 10 has a heating ring on its side wall for heating the oil-making raw materials inside the cylinder cavity.

[0025] The roasting cylinder 21 can be understood as a rotating mesh cylinder within the cylinder cavity, used for roasting the oil-making raw materials. Multiple stirring plates 22 are arranged in a ring at intervals on the inner wall of the roasting cylinder 21, rotating with the cylinder 21 to stir the oil-making raw materials within the roasting cavity. A partition plate 23 divides the roasting cavity into two semi-cylindrical cavities, with a discharge port between the two semi-cylindrical cavities. A ball valve is installed at the discharge port to transport material from the upper cavity to the lower cavity. The first driver 24 drives the roasting cylinder 21 to rotate. The first driver 24 can be a stepper motor, which is a discrete control motor that converts electrical pulse excitation signals into corresponding angular or linear displacement values. Stepper motors are existing technology and will not be elaborated upon here. The ball valve is mainly used to cut off or connect the medium in the pipeline, and can also be used for fluid regulation and control. The hard-seal V-type ball valve, with its V-shaped ball core and hard alloy welded metal valve seat, has a strong shearing force, making it particularly suitable for media containing fibers and small solid particles. Ball valves are existing technology and will not be discussed in detail here.

[0026] In some embodiments, the above-mentioned roasting cylinder 21 can be adopted as follows: Figures 1 to 4 The structure shown. See also Figures 1 to 4 The roasting cylinder 21 includes: two circular rotating plates 211 and connecting rods 212. Two circular rotating plates 211 are provided, spaced apart along the axis of the storage cylinder 10, with the rotation axis of each circular rotating plate 211 collinear with the axis of the storage cylinder 10. Multiple connecting rods 212 are provided, spaced annularly along the axis of the storage cylinder 10, with each connecting rod 212 connected to two circular rotating plates 211 at both ends. The gap between two adjacent connecting rods 212 is a through opening.

[0027] Each circular rotating plate 211 is provided with a through hole through which the fixed section of the partition plate 23 passes.

[0028] One end of the stir-frying plate 22 is connected to the corresponding connecting rod 212.

[0029] The two circular rotating plates 211 and the multiple connecting rods 212 can be understood as a cylindrical cage with multiple connecting rods 212 arranged annularly at intervals along the axis of the storage cylinder 10 connected between the two circular rotating plates 211.

[0030] In some embodiments, the partition plate 23 may be adopted as follows: Figure 1 , Figure 2 The structure shown. See also Figure 1 , Figure 2 The partition plate 23 is provided with an opening and closing structure 231, which is located at the feeding port and is used to transport a batch of oil-making raw materials from the upper cavity to the lower cavity after the raw materials have been roasted.

[0031] The opening and closing structure 231 can be an electrically connected ball valve, which can transport a batch of oil-making raw materials from the upper chamber to the lower chamber after the raw materials have been roasted.

[0032] In some embodiments, the pre-processing mechanism 30 described above may employ, for example... Figure 1 , Figure 2 , Figure 5 The structure shown. See also Figure 1 , Figure 2 , Figure 5 The pre-processing mechanism 30 includes: crushing rollers 31, connecting chains 32, and a second driver 33. Multiple crushing rollers 31 are arranged in a ring along the axis of the storage cylinder 10, and are all located at the bottom of the storage cylinder 10. The crushing rollers 31 are arranged sequentially, with two adjacent crushing rollers 31 interlocking, for crushing the oil-producing raw materials after roasting in the roasting chamber. Multiple connecting chains 32 are provided, each connecting chain connecting two adjacent crushing rollers 31. The second driver 33 drives the multiple crushing rollers 31 to rotate.

[0033] Each crushing roller 31 has a sprocket 311 at its end for connection to the connecting chain 32.

[0034] Multiple crushing rollers 31 interlock in pairs to pulverize the oil-producing raw materials after roasting in the roasting chamber. A connecting chain 32 connects two adjacent crushing rollers 31. The crushing rollers 31 are replaceable and adjustable according to the material to be crushed. A second driver 33 can drive the multiple crushing rollers 31 to rotate; multiple second drivers 33 may be provided. The second driver 33 can be a stepper motor, which is a discrete control motor that converts electrical pulse excitation signals into corresponding angular or linear displacement values. Stepper motors are existing technology and will not be described in detail here.

[0035] In some embodiments, the extraction mechanism 40 described above may employ, for example... Figure 1 The structure shown. See also Figure 1 The pressing mechanism 40 includes: a support frame 41, a pressing cylinder 42, a filter screen 43, a pressing unit 44, a funnel 45, a waste discharge cylinder 46, an oil storage tank 47, and a waste bin 48. The support frame 41 is located below the storage cylinder 10 and has a supporting platform with a vertically penetrating elongated hole. The pressing cylinder 42 is fixed to the supporting platform and has a pressing chamber with a horizontally oriented axis. The pressing chamber has an inlet connected to the discharge channel, located on the side wall of one end of the pressing cylinder 42. The other end of the pressing cylinder 42 is the discharge outlet, and the bottom of the pressing cylinder 42 is open. The filter screen 43 is located below the pressing cylinder 42 and covers the open end of the pressing cylinder 42. The pressing unit 44 is located inside the pressing cylinder 42 and is used to press the oil-producing raw materials in the pressing chamber and separate the vegetable oil from the oil residue. A funnel 45 is located at the bottom of the supporting platform to allow vegetable oil to be discharged through the elongated hole, the open end, and the filter screen 43. A waste discharge cylinder 46 is connected at one end to the outlet of the pressing cylinder 42 to collect oil extraction waste. An oil storage tank 47 is located below the funnel 45 to collect vegetable oil. A waste bin 48 is located at the other end of the waste discharge cylinder 46 to collect oil extraction waste.

[0036] The pressing mechanism 40 refers to an oil press, which is a machine that uses external mechanical force to increase temperature, activate oil molecules, and squeeze oil out of oilseeds. Oil presses are existing technology and will not be discussed in detail here.

[0037] Screw presses are mainly used for the extrusion and dehydration of materials. In a screw press, the material is fed into the feed box and then moves towards the discharge port under the action of the screw auger. During the conveying process, the distance between the screws and the diameter of the auger shaft gradually decrease, thereby increasing the screw extrusion pressure and realizing the progressive pressure extrusion of the material. Excess water is discharged through the screen, while the dehydrated material continues to be conveyed forward until it is blocked by the material blocking device and discharged.

[0038] In some embodiments, the extraction unit 44 described above may employ, for example, Figure 1 The structure shown. See also Figure 1 The pressing unit 44 includes a conical shaft 441, a spiral blade 442, and a third actuator 443. The conical shaft 441 is rotatably mounted inside the pressing cylinder 42, and its outer diameter increases progressively from the feed inlet to the discharge outlet of the pressing cylinder 42. The spiral blade 442 is spirally wound around the conical shaft 441. The third actuator 443 drives the conical shaft 441 to rotate.

[0039] The extraction unit 44 can be understood as the spiral shaft of the pressing auger.

[0040] In some embodiments, the above-described pressure vegetable oil extraction device may employ, for example... Figure 1 , Figure 2 The structure shown. See also Figure 1 , Figure 2 The pressure vegetable oil extraction device also includes a fixed frame 50, which is used to support the fixed storage cylinder 10.

[0041] The fixed frame 50 can support the fixed storage cylinder 10.

[0042] In some embodiments, the crushing roller 31 may be as follows: Figure 1 , Figure 2 , Figure 5 The structure shown. See also Figure 1 , Figure 2 , Figure 5 Each crushing roller 31 is provided with multiple crushing teeth 312, which are evenly arranged on the outer wall surface of the crushing roller 31. The crushing teeth 312 of two adjacent crushing rollers 31 mesh with each other to crush the oil production raw materials.

[0043] The crushing teeth 312 on the crushing roller 31 can crush the oil-making raw materials when the crushing teeth 312 of two adjacent crushing rollers 31 mesh with each other.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure-type vegetable oil extraction device, characterized in that, include: A storage cylinder has a cavity with its axis arranged horizontally. The top of the storage cylinder has a feeding channel communicating with the cavity, and the bottom of the storage cylinder has a discharging channel communicating with the cavity. The roasting mechanism is disposed inside the cylindrical cavity and has a drum part coaxially disposed with the cylindrical cavity. The drum part has a roasting chamber, and the side wall of the drum part is provided with a plurality of through holes communicating with the roasting chamber. The roasting chamber is used to roast the oil-making raw materials. The pre-processing mechanism is located at the bottom of the storage cylinder and within the discharge channel. It has multiple crushing rollers arranged in a ring along the axis of the storage cylinder. The multiple crushing rollers are arranged sequentially, and two adjacent crushing rollers interlock with each other. It is used to crush the oil-making raw materials that have been roasted in the roasting chamber. The pressing mechanism is located below the storage cylinder and is connected to the discharge channel. It is used to press the oil-making raw materials conveyed by the discharge channel and separate the vegetable oil and oil residue. The roasting mechanism includes: A roasting drum is rotatably disposed inside the drum cavity and coaxially disposed with the storage drum. The inner cavity of the roasting drum is the roasting chamber, which is used to roast the oil-making raw materials. The roasting drum is the drum section. Multiple stir-frying plates are provided, and the multiple stir-frying plates are arranged in a ring at intervals along the axis of the stir-frying cylinder on the inner wall of the stir-frying cylinder, for turning the oil-making raw materials in the stir-frying chamber as the stir-frying cylinder rotates; A partition plate is horizontally installed inside the roasting cylinder, dividing the roasting chamber into two semi-cylindrical cavities, namely the upper cavity and the lower cavity. Both ends of the partition plate have fixed sections, and both fixed sections penetrate the inner wall of the roasting cylinder and are fixedly connected to the storage cylinder. The partition plate is provided with a discharge port. The first driver drives the roasting drum to rotate; The storage cylinder is provided with a heating ring on its side wall for heating the oil-making raw materials inside the cylinder cavity; The roasting cylinder includes: Two circular rotating plates are provided, and the two circular rotating plates are spaced apart along the axial direction of the storage cylinder. The rotation axis of each circular rotating plate is collinear with the axis of the storage cylinder. The material storage cylinder is provided with multiple connecting rods, which are arranged circumferentially at intervals along the axis of the cylinder. Each connecting rod is connected to two circular rotating plates at both ends, and the gap between two adjacent connecting rods is the through opening. Each of the circular rotating plates is provided with a through hole for the fixed section of the corresponding partition plate to pass through; One end of the stir-frying plate is connected to the corresponding connecting rod; The partition plate is provided with an opening and closing structure, which is located at the feeding port and is used to transport a batch of oil-making raw materials from the upper cavity to the lower cavity after the raw materials have been roasted.

2. The pressure-type vegetable oil extraction device as described in claim 1, characterized in that, The pre-processing mechanism also includes: Multiple connecting chains are provided, and each connecting chain is used to connect two adjacent crushing rollers respectively; A second driver is used to drive the multiple crushing rollers to rotate; Each of the crushing rollers has a sprocket at its end for connection to the connecting chain.

3. The pressure-type vegetable oil extraction device as described in claim 1, characterized in that, The extraction mechanism includes: A support frame is provided below the storage cylinder and has a bearing platform, wherein the bearing platform is provided with an elongated hole that runs vertically through the cylinder. The pressing cylinder is fixedly mounted on the supporting platform and has a pressing chamber. The axis of the pressing chamber is horizontally set. The pressing chamber has a feed inlet that communicates with the discharge channel. The feed inlet is located on the side wall of one end of the pressing cylinder. The other end of the pressing cylinder is a discharge outlet. The bottom end of the pressing cylinder is open. A filter screen is installed below the extraction cylinder and covers the opening at the bottom of the extraction cylinder; The pressing unit is installed inside the pressing cylinder and is used to press the oil-producing raw materials in the pressing chamber and separate the vegetable oil and oil residue. A funnel, located at the bottom of the support platform, is used to drain vegetable oil that has passed through the elongated hole, the opening, and the filter screen. The waste discharge cylinder is connected at one end to the discharge port of the pressing cylinder and is used to receive oil extraction waste. An oil storage tank, located below the funnel, is used to collect vegetable oil; The waste bin is located at the other end of the waste discharge cylinder and is used to collect oil production waste.

4. The pressure-type vegetable oil extraction device as described in claim 3, characterized in that, The extraction unit includes: A conical shaft is rotatably disposed inside the pressing cylinder, and the outer diameter of the conical shaft increases continuously from the feed inlet end of the pressing cylinder to the discharge outlet end of the pressing cylinder. The spiral blades are spirally wound around the conical shaft; The third driver is used to drive the conical shaft to rotate.

5. The pressure-type vegetable oil extraction device as described in claim 1, characterized in that, The pressure-type vegetable oil extraction device also includes a fixing frame, which is used to support and fix the storage cylinder.

6. The pressure-type vegetable oil extraction device as described in claim 1, characterized in that, Each of the crushing rollers is provided with multiple crushing teeth, which are evenly arranged on the outer wall surface of the crushing roller. The crushing teeth of two adjacent crushing rollers mesh with each other to crush the oil-making raw materials.

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