Oil rubbing and peeling integrated machine and oil peeling and separating system

Abstract

This utility model discloses an integrated oilseed kneading and peeling machine and an oilseed peeling and separation system. Below the feeding shell of the integrated machine is an offset crushing shell. The crushing shell contains toothed rollers that engage with arc-shaped toothed plates on its inner wall, with the outer teeth of the rollers and the inner teeth of the arc-shaped toothed plates arranged alternately. Below the crushing shell is a vertically extending downward air-classifying shell. The left side wall of the air-classifying shell has multiple graded air inlets along its height, and the right side wall has multiple graded air outlets along its height. Each graded air inlet extends to the left and upward, and each graded air outlet extends to the right and upward. The left side of the air-classifying shell is covered with an air inlet duct, with an air inlet at the upper left end of the duct. Multiple collision rods extending in the front-back direction are evenly distributed within the inner cavity of the air-classifying shell. The right side of the air-classifying shell is covered with an air outlet duct, with an air outlet at the upper right end of the duct. The bottom of the air-classifying shell has a kernel outlet. This utility model has high peeling efficiency, low energy consumption, and good kernel integrity.

Description

Technical Field

[0001] This utility model relates to an oil extraction and processing equipment, and more particularly to an integrated oilseed kneading and peeling machine. This utility model also relates to an oilseed peeling and separation system for peeling shelled oilseeds, such as soybeans, cottonseeds, and sunflowers, and belongs to the technical field of bulk oilseed pretreatment equipment. Background Technology

[0002] Traditionally, shelling of oilseeds such as soybeans, cottonseeds, and sunflowers involves using a toothed roller crusher to break the seeds open. Then, taking advantage of the difference in density between the kernel and the shell, an air separator is used to separate the skin and husk from the crushed oilseeds. The air separator's channels are equipped with many circular impact rods that cause the kernel and husk to collide, promoting separation. The combination of crushing and air separation usually involves two or more stages.

[0003] Existing toothed roller crushers require oilseeds to be broken into 4-8 pieces for effective peeling, resulting in a significant amount of oil powder in the oilseeds. The impact bar effect of air separators is highly dependent on the moisture content of the oilseeds; for example, in oilseeds with high moisture content, the skin is difficult to separate from the kernel. Therefore, the pretreatment of oilseeds, including drying and softening, requires a high level of steam energy.

[0004] Chinese utility model patent CN 211488576U discloses "a multi-stage air separator", which includes an air separator chamber extending vertically. A rotary discharge valve is installed at the top inlet of the air separator chamber. Multiple air separator chamber inlets are provided from top to bottom on the left side wall of the air separator chamber, and multiple air separator chamber outlets are provided from top to bottom on the right side wall of the air separator chamber. Each air separator chamber outlet is higher than the air separator chamber inlet on the opposite side. The upper and lower edges of each air separator chamber inlet are respectively connected to an upper left inclined plate and a lower left inclined plate that are inclined to the lower right and parallel to each other. The upper edge of each air separator chamber outlet is respectively connected to a right inclined plate that is inclined to the lower left. The lower edge of each right inclined plate points to the upper part of the left inclined plate. An air separator discharge port is provided at the bottom of the air separator chamber. An exhaust chamber covering the air separator chamber outlets is provided on the right side of the air separator chamber, and an air separator outlet is connected to the top of the exhaust chamber. This air separator improves air separation efficiency, but for oilseeds with high moisture content and difficult kernel-shell separation, the crushing requirements are relatively high. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the problems existing in the above and / or prior art, this utility model is proposed.

[0007] The primary objective of this invention is to overcome the problems existing in the prior art and provide an integrated oilseed crushing and peeling machine that has high peeling efficiency, low energy consumption, and ensures that the kernels of the oilseeds remain intact after the peels are broken.

[0008] To solve the above technical problems, this utility model provides an integrated oilseed kneading and peeling machine, comprising a feeding shell with a peeling inlet at its upper end, and an offset crushing shell below the feeding shell. A toothed roller is installed in the crushing shell, and an arc-shaped toothed plate enclosing the outer circumference of the toothed roller is provided on one inner wall of the crushing shell. The toothed roller has evenly distributed outer teeth, and the arc-shaped toothed plate has evenly distributed inner teeth, with the outer teeth of the toothed roller and the inner teeth of the arc-shaped toothed plate arranged alternately. Below the crushing shell is a vertically downward-extending air-classifying shell. The left side wall of the shell is provided with multiple graded air inlets along the height direction, and the right side wall of the air-separating shell is provided with multiple graded air outlets along the height direction. Each graded air inlet extends to the left and upward, and each graded air outlet extends to the right and upward. The left side of the air-separating shell is covered with an air inlet duct, and the upper left end of the air inlet duct is provided with an air inlet. The inner cavity of the air-separating shell is evenly distributed with multiple collision rods extending in the front-back direction. The right side of the air-separating shell is covered with an air outlet duct, and the upper right end of the air outlet duct is provided with an air outlet. The bottom of the air-separating shell is provided with a kernel outlet.

[0009] Furthermore, the inner cavity of the air separator housing is evenly distributed with multiple collision rods extending in the front-to-back direction.

[0010] Furthermore, the kernel outlet is equipped with a gravity gate.

[0011] Furthermore, the bottom of the air inlet extends to the left and upward, and the bottom of the air outlet extends to the right and upward.

[0012] Furthermore, the upper sidewalls of the air separator housing and the air outlet duct are respectively provided with sight glasses.

[0013] Another objective of this invention is to overcome the problems existing in the prior art and provide an oilseed peeling and separation system with high peeling efficiency, low energy consumption, and the ability to maintain the integrity of the kernel after the oilseed shell is broken.

[0014] To solve the above technical problems, this utility model provides an oil peeling and separation system, which adopts an integrated oil kneading and peeling machine. The peeling inlet of the integrated oil kneading and peeling machine is connected to the crushing outlet of the crusher. The air outlet is connected to the upper side wall inlet of a cyclone separator. A rotary air shut-off valve is provided at the bottom of the cyclone separator. The air outlet at the top of the cyclone separator is connected to the inlet of an induced draft fan. The outlet of the induced draft fan is connected to an air outlet pipe and a return air pipe. An air outlet control valve is installed on the air outlet pipe. A return air control valve is provided in the return air pipe, and its outlet is connected to the middle bypass inlet of the air inlet pipe. A fresh air regulating valve is provided at the main inlet of the air inlet pipe. The outlet of the air inlet pipe is connected to the air inlet of the integrated oil kneading and peeling machine.

[0015] Compared with the prior art, the advantages or beneficial effects of the embodiments of this application include at least the following: 1. The kernels and seeds retain a better particle size after crushing the oilseed shells, which can reduce the powder in the oilseeds and is beneficial for subsequent processing, especially for producing large-flake meal; crushing can be completed by a single-stage toothed roller crusher, generally 2-4 pieces are sufficient. After crushing, the kneading of the oilseed kernels and shells is increased, resulting in better peeling; the requirements for oilseed conditioning are reduced, the peeling rate is increased, and the protein content in the meal is increased; the original air separator was single-channel with a small peeling capacity, while this equipment adopts multi-stage, multi-channel peeling, which can meet the large peeling capacity; compared with single-stage crushing and peeling, the peeling rate can be increased by 1-2%, and the process flow is simplified.

[0016] 2. A single production line with a capacity of 1500 tons / day can reduce the need for one toothed roller crusher (45kW) and add one kneading device (30kW), saving energy. Simultaneously, when producing low-protein soybean meal, it can eliminate one crushing and air-separation peeling system (approximately 120kW), saving 1 kWh of electricity per ton of oilseed. Based on the local electricity price of 0.8 yuan / kWh, and assuming an annual processing capacity of 1500 tons / day for 330 days, this would result in annual electricity savings of 396,000 yuan. Plant investment and equipment maintenance costs would also be significantly reduced. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are provided for reference and illustration only and are not intended to limit this utility model. Wherein: Figure 1 This is a schematic diagram of the integrated oilseed kneading and peeling machine of this utility model; Figure 2 This is a flowchart of the oil peeling and separation system in this utility model; Attached diagram: Oilseed crushing and peeling integrated machine: 1. Feeding shell; 1a. Peeling feed inlet; 2. Crushing shell; 3. Arc-shaped toothed plate; 4. Toothed roller; 5. Air classifier shell; 5a. Grading air inlet; 5b. Collision rod; 5c. Grading air outlet; 6. Air inlet duct; 6a. Air inlet; 7. Air outlet duct; 7a. Air outlet; 8. Gravity gate; 9. Kernel and seed outlet; 10. Sight glass; 11. Crusher; 12. Cyclone; 13. Rotary air shut-off valve; 14. Exhaust fan; 15. Exhaust duct; 15a. Exhaust control valve; 16. Return duct; 16a. Return control valve; 17. Fresh air regulating valve; 18. Inlet duct. Detailed Implementation

[0018] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0019] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0021] like Figure 1 As shown, the oilseed kneading and peeling integrated machine of this utility model includes a feeding shell 1, with a peeling feed inlet 1a at the upper end of the feeding shell 1, and an offset crushing shell 2 below the feeding shell 1. The outlet of the feeding shell 1 is offset to the left of the toothed roller 4, which facilitates the downward movement of material particles and reduces the risk of material blockage. The crushing shell 2 is equipped with a toothed roller 4, and an arc-shaped toothed plate 3 is provided on one inner wall of the crushing shell 2, which surrounds the outer periphery of the toothed roller 4. The toothed roller 4 has evenly distributed outer teeth, and the arc-shaped toothed plate 3 has evenly distributed inner teeth. The outer teeth of the toothed roller 4 and the inner teeth on the arc-shaped toothed plate 3 are arranged alternately.

[0022] Below the crushing shell 2, a vertically extending air classifier shell 5 is provided. The left side wall of the air classifier shell 5 has multiple graded air inlets 5a along its height, and the right side wall has multiple graded air outlets 5c along its height. Each graded air inlet 5a extends to the left and upward, and each graded air outlet 5c extends to the right and upward. The bottom of the air inlet duct 6 also extends to the left and upward. The left side of the air classifier shell 5 is covered by the air inlet duct 6, with an air inlet 6a at the upper left end. The bottom of the air outlet duct 7 extends to the right and upward. The right side of the air classifier shell 5 is covered by the air outlet duct 7, with an air outlet 7a at the upper right end.

[0023] During operation, the toothed roller 4 rotates counterclockwise. Oilseeds containing both shells and husks enter the feeding housing 1 through the peeling inlet 1a. As the oilseeds pass between the toothed roller 4 and the arc-shaped toothed plate 3, the initially broken-shell oilseed particles are rubbed and peeled, causing the kernels to separate from the husks. The gap between the toothed roller 4 and the arc-shaped toothed plate 3 can be adjusted according to the particle size of the oilseeds to adjust the rubbing intensity. The separated kernels and husks fall together into the inner cavity of the air classifier housing 5. The airflow enters the inner cavity of the air classifier housing 5 through the grading inlet 5a on the left, bends upward, and flows out through the grading outlet 5c on the right. During this process, the density difference between the kernels and husks is utilized, with the heavier kernels sinking downwards and the lighter husks being discharged with the airflow.

[0024] At least three stages of air separation are installed along the height of the air separation shell 5 to facilitate the removal of the shell. To further improve the separation effect, multiple collision rods 5b extending in the front-to-back direction are evenly distributed inside the air separation shell 5 to enhance the separation effect. During each stage of air separation, the airflow flows laterally across the multiple collision rods 5b, and the shell collides with the collision rods 5b multiple times, causing the kernel embedded in the shell to completely detach.

[0025] The lower end of the air separator shell 5 is provided with a kernel outlet 9 and a gravity gate 8. The separated oilseed kernels can be temporarily stored at the bottom of the air separator shell 5. When a certain weight is reached, the gravity gate 8 will automatically open to discharge the oilseed kernels and then close again.

[0026] The upper sidewalls of the air separator housing 5 and the air outlet duct 7 are respectively equipped with sight glasses 10 to facilitate observation of the peeling or kernel separation state inside.

[0027] like Figure 2As shown, the oil peeling and separation system of this utility model adopts an integrated oil kneading and peeling machine. The peeling inlet 1a of the integrated oil kneading and peeling machine is connected to the crushing outlet of the crusher 11. The air outlet 7a is connected to the upper side wall inlet of the cyclone 12. The bottom of the cyclone 12 is provided with a rotary air shut-off valve 13. The top air outlet of the cyclone 12 is connected to the inlet of the induced draft fan 14. The outlet of the induced draft fan 14 is connected to an air outlet pipe 15 and a return air pipe 16. An air outlet control valve 15a is provided on the air outlet pipe 15, and a return air control valve 16a is provided on the return air pipe 16. The outlet of the return air pipe 16 is connected to the middle bypass inlet of the air inlet pipe 18. The main inlet of the air inlet pipe 18 is provided with a fresh air regulating valve 17. The outlet of the air inlet pipe 18 is connected to the air inlet 6a of the integrated oil kneading and peeling machine.

[0028] After primary crushing by crusher 11, the shell is broken into 2-4 pieces, instead of the traditional 4-8 pieces. Then it enters the oilseed kneading and peeling machine for kneading and air separation. Under the suction of blower 14, the shell is discharged from the air outlet 7a of the oilseed kneading and peeling machine with the airflow and enters the centrifugal separator 12 for centrifugal separation. The kernels settle to the bottom of the centrifugal separator 12. After a certain amount, the rotary air shut-off valve 13 is opened to discharge the kernels. Part of the airflow drawn by blower 14 is discharged through air outlet pipe 15, and the air volume is controlled by air outlet control valve 15a. The other part enters air inlet pipe 18 through return air pipe 16, and the air volume is controlled by return air control valve 16a. At the same time, a part of fresh air also enters air inlet pipe 18 through fresh air regulating valve 17 and returns to air inlet 6a of oilseed kneading and peeling machine for air separation in a cycle.

[0029] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. An integrated oilseed kneading and peeling machine, comprising a feeding shell, wherein the upper end of the feeding shell is provided with a peeling inlet, characterized in that: Below the feeding housing is an offset crushing housing, within which a toothed roller is installed. One inner wall of the crushing housing has an arc-shaped toothed plate enclosing the outer circumference of the toothed roller. The toothed roller has evenly distributed external teeth, and the arc-shaped toothed plate has evenly distributed internal teeth. The external teeth of the toothed roller and the internal teeth of the arc-shaped toothed plate are arranged alternately. Below the crushing housing is a vertically extending downward air-classifying housing. The left side wall of the air-classifying housing has multiple grading air inlets along its height direction, and the right side wall of the air-classifying housing has multiple grading air outlets along its height direction. Each grading air inlet extends to the left and upward, and each grading air outlet extends to the right and upward. The left side of the air-classifying housing is covered by an air inlet duct, with an air inlet at the upper left end of the air inlet duct. The right side of the air-classifying housing is covered by an air outlet duct, with an air outlet at the upper right end of the air outlet duct. The bottom of the air-classifying housing has a kernel / seed outlet.

2. The oil rubbing and peeling all-in-one machine according to claim 1, characterized in that: The inner cavity of the air separator housing is evenly distributed with multiple collision rods extending in the front-to-back direction.

3. The oil rubbing and peeling all-in-one machine according to claim 1, characterized in that: The kernel outlet is equipped with a gravity gate.

4. The oil rubbing and peeling all-in-one machine of claim 1, wherein: The bottom of the air inlet extends to the left and upward, and the bottom of the air outlet extends to the right and upward.

5. The oil rubbing and peeling all-in-one machine according to claim 1, characterized in that: The upper sidewalls of the air separator housing and the air outlet duct are respectively equipped with sight glasses.

6. An oil dehulling separation system characterized by: The oilseed kneading and peeling integrated machine as described in any one of claims 1 to 5 is characterized in that the peeling inlet of the integrated oilseed kneading and peeling machine is connected to the crushing outlet of the crusher, the air outlet is connected to the upper side wall inlet of the cyclone, the bottom of the cyclone is provided with a rotary air shut-off valve, the top air outlet of the cyclone is connected to the inlet of the induced draft fan, the outlet of the induced draft fan is connected to an air outlet pipe and a return air pipe, the air outlet pipe is equipped with an air outlet control valve; the return air pipe is provided with a return air control valve and its outlet is connected to the middle bypass inlet of the air inlet pipe, the main inlet of the air inlet pipe is provided with a fresh air regulating valve, and the outlet of the air inlet pipe is connected to the air inlet of the integrated oilseed kneading and peeling machine.

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