Soybean protein separation and extraction device

Abstract

The utility model belongs to the technical field of soybean protein separation, and particularly relates to a soybean protein separation and extraction device which comprises a fixing plate, side plates fixedly arranged on the two sides of the fixing plate, a bottom plate fixedly arranged on the lower side of the fixing plate, foot rods arranged on the two sides of the side faces, away from each other, of the side plates, and a sieve plate fixedly arranged between the side plates. The bottom plate inclines downwards towards the side close to the fixing plate, the screen plate inclines downwards towards the side away from the fixing plate, and conveying belt mechanisms are arranged on the side faces, close to each other, of the side plates and close to the upper side of the screen plate. The scraping plate of the residue scraping mechanism can continuously and circularly scrape the upper side face of the screen plate, finally fine residues are continuously scraped into the collecting box to be collected, the fine residues during screening can be rapidly discharged, the fine residues are prevented from being retained on the upper side of the screen plate and being adhered to the screen plate, the screen plate is prevented from being blocked by the fine residues, and it is restrained that the fine residues are permeated and extruded by leaching liquid to fall into the lower side of the screen plate; therefore, the screening and separating effect of the leaching liquid is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of soybean protein separation technology, and specifically relates to a soybean protein separation and extraction device. Background Technology

[0002] Soy protein is a high-quality plant protein with health benefits such as nutritional supplementation, improved food texture, and cholesterol reduction. It is widely used in food processing and health products. Its extraction equipment mainly includes an extraction system, a separation system, and a drying system.

[0003] During extraction, defatted soybean meal is first crushed by a hammer mill and then fed into an alkaline reaction tank for extraction at pH 9.0 and 55°C. The mixture is then separated from the fiber residue by a horizontal screw centrifuge. The supernatant is filtered through a vibrating screen and then enters an acid precipitation tank. Hydrochloric acid is added dropwise using a metering pump to adjust the pH to 4.5. After protein precipitation, protein curd is separated by a disc centrifuge. The curd is neutralized in a countercurrent washing tank and then enters a ceramic membrane ultrafiltration system for desalting and concentration. It is then inactivated by a plate pasteurizer. The concentrate is sprayed into a spray drying tower by a high-pressure atomizer to finally obtain soybean protein isolate powder with a moisture content of ≤6%.

[0004] The stainless steel sieve frame (75μm aperture) is used to finely screen the protein extract after centrifugation in a horizontal screw centrifuge, in order to further obtain a pure protein extract. A vibrating motor is installed at the bottom of the frame, and the sieve surface is inclined. During use, the alkaline solution flows through the sieve surface, and the vibration forces the residue to move upwards and be discharged. The filtrate flows through the sieve holes into an acid precipitation tank for sedimentation. However, the residual fine residue in the protein extract has a certain degree of adhesion. Although most of the fine residue can be separated through the sieve surface by natural vibration alone, some fine residue will adhere to the sieve surface, clogging the sieve holes, resulting in a decrease in the screening and separation efficiency of the extract. Furthermore, the subsequent permeation of the extract will continuously squeeze the fine residue, forcing some of it to fall through the sieve surface into the separation liquid, further reducing the screening and separation effect of the extract. Utility Model Content

[0005] To address the above problems, the purpose of this utility model is to provide a soybean protein separation and extraction device that solves the problem that the residual fine residue in the protein extract has a certain degree of adhesion. Although most of the fine residue can be separated through the screen surface by natural vibration alone, some fine residue will adhere to the screen surface and block the screen holes, resulting in a decrease in the screening and separation efficiency of the extract. Furthermore, the subsequent permeation of the extract will continuously squeeze the fine residue, forcing some fine residue to fall through the screen surface into the separation liquid, thus reducing the screening and separation effect of the extract.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a soybean protein separation and extraction device, comprising a fixed plate, side plates fixedly disposed on both sides of the fixed plate, a bottom plate fixedly disposed on the lower side of the fixed plate, foot rods disposed on both sides of the side plates on opposite sides, a sieve plate fixedly disposed between the side plates, the bottom plate inclined downward toward the side closer to the fixed plate, the sieve plate inclined downward toward the side away from the fixed plate, and a conveyor belt mechanism disposed on the upper side of the side plates on opposite sides near the sieve plate. The conveyor belt mechanism includes a drive roller and a drive belt, the drive rollers are rotatably connected to the side plates, the drive belt is driven by the drive rollers, the drive belt is parallel to the sieve plate, and a motor is fixedly disposed on one side of one of the side plates. A shaft is fixedly installed between the output end of the motor and the side plates. The shaft is fixedly connected to the transmission roller on one side of the conveyor belt mechanism. Vibration motors are fixedly installed side by side on the opposite sides of the side plates. Sludge scraping mechanisms are evenly fixedly installed on the outer side of the transmission belt of the conveyor belt mechanism. A liquid outlet is connected to the lower side of the fixed plate near the bottom plate. The sludge scraping mechanism includes a crossbar. The two ends of the crossbar are fixedly connected to the transmission belt of the conveyor belt mechanism. Connecting rods are fixedly installed at equal intervals on the side of the crossbar away from the transmission belt. An end plate is fixedly installed on the end of the connecting rod away from the crossbar. Scrapers are fixedly installed at equal intervals on the side of the end plate away from the crossbar. When the scrapers rotate, they are close to the upper side of the screen plate. A collection box is installed on the lower side of the bottom plate away from the fixed plate.

[0007] The beneficial effects of this utility model are as follows: the scraper of the slag scraping mechanism will continuously scrape the upper side of the screen plate in a cycle, and finally scrape the fine slag into the collection box for collection. This can quickly discharge the fine slag during screening, avoid the fine slag from lingering on the upper side of the screen plate, avoid the fine slag from adhering to the screen plate, thereby avoiding the fine slag from clogging the screen plate, and inhibit the fine slag from falling to the lower side of the screen plate due to the penetration and squeezing of the extract, thereby ensuring the screening and separation effect of the extract.

[0008] To reduce the transmission of vibration from the side plates to the footplate;

[0009] As a further improvement to the above technical solution: a top block is fixedly installed at the upper end of the foot rod, a second spring is fixedly installed on the upper side of the top block, and a fixing block is fixedly installed on the upper side of the second spring, and the fixing blocks are all fixedly connected to the side plate.

[0010] The beneficial effect of this improvement is that it can reduce the transmission of vibration from the side plate to the foot bar.

[0011] To ensure stable introduction of the extract;

[0012] As a further improvement to the above technical solution: an inclined plate is fixedly provided on the upper side of the side plate near the fixed plate.

[0013] The beneficial effect of this improvement is that it allows for the stable introduction of the extract between the inclined plate and the fixed plate, with the inclined plate acting as a guide for the extract.

[0014] To facilitate the separation of fine residue and residual liquid;

[0015] As a further improvement to the above technical solution: a filter basket is placed inside the collection box, and hanging blocks are fixedly installed on the upper sides of both sides of the filter basket. The hanging blocks are hung on the collection box, and the bottom of the filter basket is located in the middle of the inner side of the collection box.

[0016] The beneficial effects of this improvement are: when the collection box collects fine residue, there will be residual liquid in the fine residue. When the fine residue is collected by the filter basket, the liquid can pass through the filter basket and fall into the collection box, which facilitates the separation of fine residue and residual liquid.

[0017] In order to observe the discharge of the filtered extract;

[0018] As a further improvement to the above technical solution: observation windows are provided on the lower side of the side plate corresponding to the lower side of the sieve plate.

[0019] The beneficial effects of this improvement are: the addition of an observation window to observe the discharge of the filtered extract.

[0020] To increase the stability of the scraper's scraping action on the sieve plate;

[0021] As a further improvement to the above technical solution: the connecting rod is a telescopic rod, and a spring is sleeved on the outer side of the connecting rod.

[0022] The beneficial effects of this improvement are: the spring can push the end plate down, the connecting rod can extend, which can make the scraper press stably on the screen plate, increasing the stability of the scraper scraping the screen plate.

[0023] To reduce scratch damage to the sieve plate;

[0024] As a further improvement to the above technical solution: a rubber scraper is provided on the lower side of each scraper, and a snap-fit ​​strip is fixedly provided on the upper side of each rubber scraper, and the snap-fit ​​strip is slidably snapped into the lower side of the scraper.

[0025] The beneficial effects of this improvement are: the rubber scraper can be removed from below the scraper via a snap-fit ​​strip, the rubber scraper can reduce the scratching damage to the screen plate, and the rubber scraper can be replaced regularly.

[0026] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the filter basket structure in this utility model;

[0030] Figure 4 This is a schematic diagram of the slag scraping mechanism in this utility model;

[0031] In the diagram: 1. Fixed plate; 2. Side plate; 3. Bottom plate; 4. Foot rod; 5. Screen plate; 6. Conveyor belt mechanism; 7. Motor; 8. Shaft; 9. Vibrating motor; 10. Slag scraping mechanism; 101. Crossbar; 102. Connecting rod; 103. End plate; 104. Scraper; 105. Spring 1; 106. Rubber scraper; 107. Clamping strip; 11. Liquid outlet; 12. Collection box; 13. Top block; 14. Spring 2; 15. Fixed block; 16. Inclined plate; 17. Filter basket; 18. Hanging block; 19. Observation window. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0033] like Figure 1 — Figure 4As shown: A soybean protein separation and extraction device includes a fixed plate 1, with side plates 2 fixedly disposed on both sides of the fixed plate 1, and a bottom plate 3 fixedly disposed on the lower side of the fixed plate 1. Foot rods 4 are disposed on both sides of the side plates 2 that are far apart from each other. A sieve plate 5 is fixedly disposed between the side plates 2. The bottom plate 3 is inclined downwards towards the side closer to the fixed plate 1, and the sieve plate 5 is inclined downwards towards the side farther from the fixed plate 1. A conveyor belt mechanism 6 is disposed on the upper side of the side plates 2 that are close to each other, near the sieve plate 5. The conveyor belt mechanism 6 includes a drive roller and a drive belt. The drive roller is rotatably connected to the side plate 2, and the drive belt is driven by the drive roller. The drive belt is parallel to the sieve plate 5. The side of one side plate 2 is fixed... A motor 7 is fixedly installed, and a shaft 8 is fixedly installed between the output end of the motor 7 and the side plate 2. The shaft 8 is fixedly connected to a transmission roller on one side of the conveyor belt mechanism 6. Vibration motors 9 are fixedly installed side by side on the opposite sides of the side plate 2. Sludge scraping mechanisms 10 are evenly fixedly installed on the outer side of the transmission belt of the conveyor belt mechanism 6. A liquid outlet 11 is connected to the lower side of the fixed plate 1 near the bottom plate 3. The sludge scraping mechanism 10 includes a crossbar 101. The two ends of the crossbar 101 are fixedly connected to the transmission belt of the conveyor belt mechanism 6. Connecting rods 102 are fixedly installed at equal intervals on the side of the crossbar 101 away from the transmission belt. An end plate 103 is fixedly installed on the end of the connecting rod 102 away from the crossbar 101. Scrapers 104 are fixedly arranged at equal intervals on the side away from the crossbar 101. When the scrapers 104 rotate, they are close to the upper side of the sieve plate 5. A collection box 12 is arranged on the lower side of the bottom plate 3 away from the fixed plate 1. The scrapers 104 of the scraping mechanism 10 will continuously scrape the upper side of the sieve plate 5 in a cyclical manner, eventually scraping the fine residue into the collection box 12 for collection. This can quickly discharge the fine residue during screening, avoid the fine residue from accumulating on the upper side of the sieve plate 5, and prevent the fine residue from adhering to the sieve plate 5, thereby preventing the fine residue from clogging the sieve plate 5 and inhibiting the fine residue from falling into the lower side of the sieve plate 5 due to the permeation and squeezing of the extract, thus ensuring the screening and separation effect of the extract. A top block 13 is fixedly arranged at the upper end of the foot rod 4, and a second spring 14 is fixedly arranged on the upper side of the top block 13. A fixing block 15 is fixedly installed on the upper side of the side plate 2. The fixing block 15 is fixedly connected to the side plate 2, which can reduce the transmission of vibration of the side plate 2 to the foot rod 4. An inclined plate 16 is fixedly installed on the upper side of the side plate 2 near the fixing plate 1, which can stably introduce the extract through the inclined plate 16 and the fixing plate 1. The inclined plate 16 plays the role of guiding the liquid. A filter basket 17 is placed inside the collection box 12. Hanging blocks 18 are fixedly installed on the upper sides of both sides of the filter basket 17. The hanging blocks 18 are hung on the collection box 12. The bottom of the filter basket 17 is located in the middle of the inner side of the collection box 12. When the collection box 12 collects fine residue, there will be residual liquid in the fine residue. The liquid can pass through the filter basket 17 and fall into the collection box 12, which facilitates the separation of fine residue and residual liquid.Each side plate 2 has an observation window 19 on its lower side corresponding to the lower side of the sieve plate 5. The observation window 19 is used to observe the discharge of the filtered extract. The connecting rod 102 is a telescopic rod, and a spring 105 is sleeved on the outer side of each connecting rod 102. The spring 105 can push down the end plate 103, extending the connecting rod 102 and allowing the scraper 104 to be stably pressed onto the sieve plate 5, increasing the stability of the scraper 104's scraping action. Each scraper 104 has a rubber scraper strip 106 on its lower side, and a locking strip 107 is fixedly installed on the upper side of each rubber scraper strip 106. The locking strip 107 slides and engages with the lower side of the scraper 104. The rubber scraper strip 106 can be detached from below the scraper 104 via the locking strip 107. The rubber scraper strip 106 reduces scratch damage to the sieve plate 5 and can be replaced periodically.

[0034] Working principle and usage process of this utility model:

[0035] In use, the protein extract is placed into the upper part of the sieve plate 5. The extract flows down the sieve plate 5. The vibration motor 9 is started, and the vibration motor 9 drives the sieve plate 5 to vibrate through the side plate 2, thus vibrating the extract. The clear liquid seeps down the sieve plate 5, then flows along the bottom plate 3 to the fixed plate 1, and finally is discharged from the outlet 11. The fine residue remains on the upper part of the sieve plate 5. With accumulation and flow, it is eventually discharged into the collection box 12 for collection. The motor 7 is started, and the output end of the motor 7 drives the conveyor belt through the shaft 8. The drive roller of structure 6 rotates, which drives the drive belt to rotate. The drive belt drives the scraping mechanism 10 to move. As the scraping mechanism 10 moves cyclically with the drive belt, the scraper 104 of the scraping mechanism 10 continuously scrapes the upper side of the screen plate 5, eventually scraping the fine residue into the collection box 12 for collection. This can quickly discharge the fine residue during screening, prevent the fine residue from accumulating on the upper side of the screen plate 5, and prevent the fine residue from adhering to the screen plate 5, thereby preventing the fine residue from clogging the screen plate 5 and inhibiting the fine residue from being penetrated and squeezed by the leachate. The extract is pressed into the lower side of the sieve plate 5, thus ensuring the sieving and separation effect of the extract. In addition, spring 2 14 is provided to reduce the transmission of vibration from the side plate 2 to the foot rod 4. Furthermore, inclined plate 16 is provided to stably introduce the extract between the inclined plate 16 and the fixed plate 1. Inclined plate 16 acts as a liquid guide. In addition, when the collection box 12 collects the fine residue, there will be residual liquid in the fine residue. The fine residue is collected through the filter basket 17, and the liquid can fall into the collection box 12 through the filter basket 17, which facilitates the separation of fine residue and residue. In addition, an observation window 19 is provided to observe the discharge of the filtered extract. Furthermore, spring 105 can push down end plate 103, and connecting rod 102 can extend, so that scraper 104 can be stably pressed on sieve plate 5, increasing the stability of scraping sieve plate 5 by scraper 104. In addition, rubber scraper 106 can be removed from under scraper 104 by snap-fit ​​strip 107. Rubber scraper 106 can reduce scraping damage to sieve plate 5, and rubber scraper 106 can be replaced periodically.

[0036] It should be noted that, in this document, 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.

[0037] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A soybean protein separation and extraction device, characterized in that: The system includes a fixed plate (1), with side plates (2) fixedly installed on both sides of the fixed plate (1), and a bottom plate (3) fixedly installed on the lower side of the fixed plate (1). Foot rods (4) are installed on both sides of the side plates (2) that are far apart from each other. A sieve plate (5) is fixedly installed between the side plates (2). The bottom plate (3) is inclined downwards towards the side closer to the fixed plate (1), and the sieve plate (5) is inclined downwards towards the side farther from the fixed plate (1). The side plates (2) are... A conveyor belt mechanism (6) is provided on the upper side of the side plate (5) of the side plate (2). The conveyor belt mechanism (6) includes a transmission roller and a transmission belt. The transmission roller is rotatably connected to the side plate (2). The transmission belt is driven by the transmission roller. The transmission belt is arranged parallel to the sieve plate (5). A motor (7) is fixedly provided on the side of one side plate (2). The output end of the motor (7) passes through the side plate (2) and a shaft (8) is fixedly provided between the side plates (2). The shaft (8) is connected to the conveyor belt mechanism. One side of the conveyor belt mechanism (6) is fixedly connected to the transmission roller. Vibration motors (9) are fixedly arranged side by side on the side of the side plates (2) that are far apart from each other. Sludge scraping mechanisms (10) are evenly fixedly arranged on the outer side of the transmission belt of the conveyor belt mechanism (6). A liquid outlet (11) is connected to the lower side of the fixed plate (1) near the bottom plate (3). The sludge scraping mechanism (10) includes a crossbar (101). The two ends of the crossbar (101) are fixed to the transmission belt of the conveyor belt mechanism (6). The connection is as follows: on the side of the crossbar (101) away from the transmission belt, there are connecting rods (102) fixed at equal intervals. On the end of the connecting rod (102) away from the crossbar (101), there is an end plate (103) fixed. On the side of the end plate (103) away from the crossbar (101), there are scrapers (104) fixed at equal intervals. When the scraper (104) rotates, it is close to the upper side of the screen plate (5). On the lower side of the bottom plate (3) away from the fixed plate (1), there is a collection box (12).

2. The soybean protein separation and extraction device according to claim 1, characterized in that: A top block (13) is fixedly installed at the upper end of the foot rod (4), a second spring (14) is fixedly installed on the upper side of the top block (13), and a fixing block (15) is fixedly installed on the upper side of the second spring (14). The fixing blocks (15) are all fixedly connected to the side plate (2).

3. The soybean protein separation and extraction device according to claim 1, characterized in that: An inclined plate (16) is fixedly installed on the upper side of the side plate (2) near the fixed plate (1).

4. The soybean protein separation and extraction device according to claim 1, characterized in that: A filter basket (17) is placed inside the collection box (12). Hanging blocks (18) are fixedly installed on the upper sides of both sides of the filter basket (17). The hanging blocks (18) are hung on the collection box (12). The bottom of the filter basket (17) is located in the middle of the inner side of the collection box (12).

5. The soybean protein separation and extraction device according to claim 1, characterized in that: The side plate (2) has an observation window (19) on its lower side corresponding to the lower side of the sieve plate (5).

6. The soybean protein separation and extraction device according to claim 1, characterized in that: The connecting rod (102) is a telescopic rod, and a spring (105) is sleeved on the outer side of the connecting rod (102).

7. The soybean protein separation and extraction device according to claim 1, characterized in that: Each scraper (104) has a rubber scraper strip (106) on its lower side, and a snap-fit ​​strip (107) is fixedly provided on the upper side of each rubber scraper strip (106). The snap-fit ​​strip (107) is slidably snapped into the lower side of the scraper (104).

Images