A rapeseed oil pressing device

Abstract

A rapeseed oil pressing device includes a mandrel with linearly arranged circular strips mounted on it. One side of each circular strip group has a row of four-sided strips arranged around the circumference of the mandrel. Between the four-sided strips are octagonal strips. Several elastic steel rings are embedded in the inner walls of the four-sided and octagonal strips, and these elastic steel rings are coaxially arranged with the mandrel. This invention uses the elastic steel rings within the four-sided and octagonal strips to divide the gaps between them into individual block-shaped spaces, increasing the friction between the rapeseed oil and the strips. This creates a certain viscous resistance when the rapeseed oil flows, effectively preventing larger particles of residue from being discharged through the gaps without affecting the normal flow of oil.

Description

Technical Field

[0001] This utility model belongs to the field of rapeseed oil technology, specifically referring to a rapeseed oil pressing device. Background Technology

[0002] Rapeseed oil presses mainly employ two pressing methods: strip press and circular press. Strip presses consist of rectangular steel bars arranged with relatively large gaps, typically used in the initial pressing stage. This method is suitable for processing high-oil-content crops (such as rapeseed and peanuts) and features high oil extraction efficiency, but the residual oil content in the cake is relatively high. Circular presses, on the other hand, consist of linearly arranged circular rings with annular grooves on their surface and smaller gaps, primarily used in the finishing pressing stage. They can apply greater pressure to further extract residual oil, thus reducing the residual oil content in the cake, but may affect the oil extraction speed.

[0003] The advantage of bar pressing lies in its fast pressing speed, but it also has a high residue output; while the round bar pressing, although slower, has a higher pressing quality and less residue. Currently, there have been attempts in the industry to combine the two pressing methods, but the residue output problem of the front bar pressing has not yet been effectively solved, which to some extent hinders the promotion and application of combined pressing technology. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a rapeseed oil pressing device, which at least partially solves the above problems.

[0005] The technical solution adopted by this utility model is as follows: This utility model proposes a rapeseed oil pressing device, including a core shaft, on which a pressing screw with gradually changing radius and pitch is sleeved;

[0006] A circular array consists of multiple circular arrays arranged linearly and coaxially mounted on a mandrel;

[0007] A quadrangular bar array consists of multiple quadrangular bars arranged around a core axis in a circular pattern.

[0008] An octagonal bar array consists of multiple octagonal bars arranged around the circumference of the mandrel, with each octagonal bar array located between adjacent square bars. The octagonal bars are used to adjust the gap.

[0009] Several elastic steel rings are embedded in the inner sidewalls of the square-ribbed and octagonal-ribbed strips, and the elastic steel rings are coaxially arranged with the mandrel.

[0010] Furthermore, the quadrangular strip is provided with several sets of first grooves, and each set of first grooves is coaxially arranged with the mandrel.

[0011] Furthermore, the first sidewall of the octagonal bar has several sets of second grooves, and the second sidewall of the octagonal bar has several sets of third grooves. The second sidewall is opposite to the first sidewall, the opening directions of the second groove and the third groove are opposite, and the second groove, the third groove and the first groove have the same arc radius and are on the same plane.

[0012] Furthermore, the elastic steel ring is embedded in the first groove.

[0013] Furthermore, the first groove in the upper part of the quadrangular bar array is asymmetrically arranged with the first groove in the middle and lower part; the second groove in the upper part of the octagonal bar array is asymmetrically arranged with the second groove in the middle and lower part; and the third groove in the upper part of the octagonal bar array is asymmetrically arranged with the third groove in the middle and lower part.

[0014] Furthermore, the inner sidewalls of the quadrangular strip are provided with oil line grooves at both ends, and the first groove is located in the area where the oil line grooves at both ends are located.

[0015] Furthermore, the rapeseed oil pressing device proposed in this utility model also includes a pressing cage and a strip ring, wherein the strip ring is fitted on the outer wall of the four-sided strip and the octagonal strip, and the pressing cage is fitted on the outer wall of the strip ring and the round strip group.

[0016] The beneficial effects of this utility model are as follows: There is an oil discharge gap between the four-sided bar and the octagonal bar, through which slag can also be discharged. The elastic steel ring embedded inside the four-sided bar and the octagonal bar can divide this gap into individual block spaces, increasing the friction between the rapeseed oil and the bar, so that the rapeseed oil generates a certain viscous resistance when flowing. This resistance can effectively prevent larger particles of slag from being discharged through the gap, while not affecting the normal flow of oil. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the rapeseed oil pressing device according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Exploded view;

[0019] Figure 3 The diagram shows the assembly state of the square-shaped bar array and the octagonal bar array;

[0020] Figure 4 This is a schematic diagram of a quadrangular bar array;

[0021] Figure 5 This is a schematic diagram of an octagonal bar structure;

[0022] Figure 6 This is a cross-sectional view of an octagonal bar array;

[0023] Figure 7 for Figure 3 A longitudinal sectional view;

[0024] Figure 8 for Figure 7 Enlarged view of section I.

[0025] Among them, 1. Press cage, 2. Round bar, 3. Mandrel, 4. Bar bar ring, 5. Four-sided bar bar, 6. Eight-sided bar bar, 7. Elastic steel ring, 8. Oil line groove, 9. First groove, 10. Second groove, 11. Third groove.

[0026] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] like Figures 1-3 As shown in the figure, the rapeseed oil pressing device proposed in this embodiment includes a core shaft 3 and a pressing cage 1. A screw with gradually changing radius and pitch is fitted on the core shaft 3. The core shaft 3 is driven to rotate, and the change in the size of the screw can gradually change the compression space during pressing, thereby crushing the rapeseed and extracting oil. The pressing cage 1 is fitted on the core shaft 3. A strip ring 4 is provided on the inner wall of the end of the pressing cage 1 near the feed. The strip ring 4 contains a set of four-sided strips 5 and a set of eight-sided strips 6. A set of round strips 2 is provided on the inner wall of the end of the pressing cage 1 away from the feed. The four-sided strips 5 and the eight-sided strips 6 are pressed by strip pressing, which has high oil extraction efficiency. The round strips 2 are pressed by round strip pressing, which has high pressing quality.

[0030] The circular bar group 2 consists of multiple circular bars 2 arranged linearly and coaxially sleeved on the core shaft 3. Its inner wall is provided with annular pressing grooves. There is a gap between the circular bars 2 and the pressing screw on the core shaft 3, and the gap is constantly changing. During the rotation process, the rapeseed is pressed to extract oil.

[0031] The four-sided strip group 5 consists of multiple four-sided strip groups 5 arranged circumferentially around the core axis 3; the octagonal strip group 6 consists of multiple octagonal strip groups 6 arranged circumferentially around the core axis 3, with each octagonal strip group 6 located between adjacent four-sided strip groups 5. Each octagonal strip group 6 has a cross-section with eight sides and two opposing first and second sidewalls. The widths of adjacent faces on the first and second sidewalls are inconsistent. Figure 3 and Figure 6 As shown, during installation, the surface adjacent to the first or second sidewall is fitted with the quadrangular strip 5 to form a cylindrical shape. The inward or outward installation of the first sidewall can change the tightness of all the strips after installation, i.e. the gap between the quadrangular strip 5 and the octagonal strip 6. This is existing technology and will not be described in detail.

[0032] To solve the problem of high slag discharge rate, such as Figure 7 and Figure 8 As shown, several elastic steel rings 7 are embedded in the inner walls of the square-shaped bar array 5 and the octagonal bar array 6. The elastic steel rings 7 are coaxially arranged with the mandrel 3. The elastic steel rings 7 have high wear resistance for long-term pressing operations, and at the same time have good flexibility for installation operations. The elastic steel rings 7 further divide the gap between the square-shaped bar array 5 and the octagonal bar array 6 into separate block areas, so that the rapeseed oil can contact both the bar array and the elastic steel rings 7 at the same time, increasing the contact area when the rapeseed oil flows, so that the rapeseed oil is subjected to greater frictional resistance. At the same time, combined with the viscous characteristics of the rapeseed oil itself and the tension between fluids, it blocks larger particles of residue and prevents them from being discharged from the gaps in the bar array with the oil, thereby solving the problem of residue discharge from the bar array.

[0033] In some embodiments, such as Figures 4-6 As shown, the quadrangular strip 5 has several sets of first grooves 9, each set of first grooves 9 being coaxially arranged with the mandrel 3. The first sidewall of the octagonal strip 6 has several sets of second grooves 10, and the second sidewall of the octagonal strip 6 has several sets of third grooves 11. The second sidewall is opposite to the first sidewall, and the opening directions of the second grooves 10 and the third grooves 11 are opposite. The second grooves 10, the third grooves 11 and the first grooves 9 have the same radius of curvature and are on the same plane. The elastic steel ring 7 is embedded in the first groove 9. When the first sidewall of the octagonal strip 6 faces the mandrel 3, the elastic steel ring 7 is also embedded in the second groove 10. When the second sidewall of the octagonal strip 6 faces the mandrel 3, the elastic steel ring 7 is also embedded in the third groove 11. Since the second grooves 10 and the third grooves 11 have the same radius of curvature and opposite opening directions, they do not hinder the installation of the elastic steel ring 7.

[0034] In some embodiments, the inner sidewalls of the quadrangular bar 5 are provided with oil line grooves 8 at both ends. The oil line grooves 8 at both ends need to be installed in different directions. To avoid incorrect installation, the first groove 9 in the upper part of the quadrangular bar 5 is asymmetrically arranged with the first groove 9 in the middle and lower part. The first grooves 9 are all located in the area where the oil line grooves 8 are located at both ends. When the quadrangular bar 5 is installed in reverse, the elastic steel ring 7 cannot be embedded into all the first grooves 9 at the same time. The octagonal bar 6 adopts the same arrangement, wherein the second groove 10 in the upper part is asymmetrically arranged with the second groove 10 in the middle and lower part, and the third groove 11 in the upper part is also asymmetrically arranged with the third groove 11 in the middle and lower part. With the cooperation of the elastic steel ring 7, the slag discharge rate can be reduced and installation errors can be avoided.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A rapeseed oil pressing device comprising a spindle (3), characterized in that, Also includes: The circular array consists of multiple circular arrays (2) arranged linearly and coaxially mounted on the mandrel (3); The four-sided strip array consists of multiple four-sided strip arrays (5) arranged circumferentially around the core shaft (3); An octagonal bar group consists of multiple octagonal bars (6) arranged around the mandrel (3), with each octagonal bar (6) located between adjacent quadrangular bars (5); Several elastic steel rings (7) are embedded in the inner sidewalls of the four-sided strip (5) and the eight-sided strip (6), and the elastic steel rings (7) are coaxially arranged with the mandrel (3).

2. Rapeseed oil pressing apparatus according to claim 1, characterized in that: The quadrangular strip (5) is provided with several sets of first grooves (9), and each set of first grooves (9) is coaxially arranged with the mandrel (3).

3. Rapeseed oil pressing apparatus according to claim 2, characterized in that: The first sidewall of the octagonal bar (6) is provided with several sets of second grooves (10), and the second sidewall of the octagonal bar (6) is provided with several sets of third grooves (11). The second sidewall is opposite to the first sidewall. The opening directions of the second groove (10) and the third groove (11) are opposite. The second groove (10), the third groove (11) and the first groove (9) have the same arc radius and are on the same plane.

4. The rapeseed oil pressing apparatus according to claim 3, characterized in that: The elastic steel ring (7) is embedded in the first groove (9).

5. The rapeseed oil expression device according to claim 3, characterized in that: The first groove (9) in the upper part of the quadrangular bar (5) is asymmetrically arranged with the first groove (9) in the middle and lower part. The second groove (10) in the upper part of the octagonal bar (6) is asymmetrically arranged with the second groove (10) in the middle and lower part. The third groove (11) in the upper part of the octagonal bar (6) is asymmetrically arranged with the third groove (11) in the middle and lower part.

6. The rapeseed oil expression device according to claim 3, characterized in that: The inner sidewalls of the quadrangular strip (5) are provided with oil line grooves (8) at both ends, and the first groove (9) is located in the area where the oil line grooves (8) are located at both ends.

7. The rapeseed oil expression device according to claim 1, characterized in that: It also includes a pressing cage (1) and a strip ring (4), the strip ring (4) being fitted on the outer walls of the four-sided strip (5) and the octagonal strip (6), and the pressing cage (1) being fitted on the outer walls of the strip ring (4) and the round strip (2).

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