Airflow crushing system for extracting plant polypeptide

Abstract

The utility model discloses an airflow crushing system for extracting plant polypeptide. The airflow crushing system comprises an air compressor, an air storage tank, a freezing dryer, a feeder, a fluidized bed airflow crusher, a cyclone collector, a dust remover, an induced draft fan and a control cabinet. According to the fluidized bed jet mill disclosed by the utility model, cooled, filtered and dried compressed air can form supersonic airflow through the nozzles to be jetted into the rotary crushing chamber, so that materials are fluidized, and in the rotary crushing chamber, the accelerated materials are converged at jet airflow intersection points of the countless nozzles; the crusher is high in crushing speed and high in efficiency, particularly has a relatively good crushing effect on heat-sensitive materials, and has the characteristics of wide application field, high finished product fineness, high grading precision and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of plant polypeptide extraction, and more specifically to an air flow pulverizing system for plant polypeptide extraction. Background Art

[0002] Plant polypeptides refer to a mixture of polypeptides with a relative molecular mass of less than 1000u, which is prepared from high-protein plants through processes such as crushing, extraction, and bio-enzymatic hydrolysis. The extraction efficiency of plant polypeptides is low, and the effective ingredients cannot be well extracted and utilized, resulting in a serious waste of protein components. In addition, the composition of plant polypeptides is complex, and they are rich in thermosensitive active ingredients. Although the use of ordinary plant crushing equipment can improve the extraction efficiency, the thermosensitive components may be lost or destroyed during the crushing process, and the protein is easily denatured under the influence of temperature, which affects the clarity of the final peptide powder solution, complicating the production process and increasing production costs. In order to improve the extraction efficiency of polypeptides, high-protein plant raw materials need to be crushed, but the extraction efficiency must be guaranteed, and the thermosensitive components must not be destroyed. Utility Model Content

[0003] In view of this, the utility model provides an air flow pulverizing system for plant polypeptide extraction, which adopts a new fluidized bed air flow pulverizer, and the compressed air after cooling, filtering and drying is formed into a supersonic airflow through a nozzle and injected into a rotating pulverizing chamber to fluidize the material. In the rotating pulverizing chamber, the accelerated material converges at the intersection of the jet airflows of countless nozzles, generating violent collision, friction and shearing to achieve ultrafine pulverization of particles.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fluidized bed airflow pulverizer comprises: a fluidized bed airflow pulverizer, a feeder and a cyclone collector connected to the side wall of the fluidized bed airflow pulverizer by pipes, and a cold dryer connected to the bottom of the fluidized bed airflow pulverizer by pipes; the fluidized bed airflow pulverizer comprises a casing and a cover installed at the top of the casing, the casing and the cover form a closed cavity, a pulverizing chamber for pulverizing raw materials and a grading chamber for grading and discharging the pulverized raw materials are arranged in the cavity, the grading chamber is through-arranged above the pulverizing chamber, a nozzle is arranged at the bottom of the casing, a feed port is arranged at the upper end of the side wall of the pulverizing chamber, the bottom of the pulverizing chamber is connected to the nozzle, the side wall of the grading chamber is arranged with a discharge port, and a turbine classifier connected to the discharge port by pipes is arranged at the top of the grading chamber for centrifugally grading the pulverized raw materials; the bottom of the feeder is pipe-connected to the feed port, the top of the cyclone collector is pipe-connected to the discharge port, and the top of the cold dryer is pipe-connected to the nozzle and the air compressor respectively.

[0005] Preferably, in the above-mentioned air flow pulverizing system for plant polypeptide extraction, an air storage tank is pipe-connected between the cold dryer and the air compressor, the top of the cold dryer is pipe-connected to the side wall of the air storage tank, and the top of the air storage tank is pipe-connected to the air compressor.

[0006] Preferably, in the above-mentioned air flow pulverizing system for plant polypeptide extraction, the top of the cyclone collector is also connected to the lower end of the dust collector side wall, and the upper end of the dust collector side wall is connected to an induced draft fan to discharge the purified gas.

[0007] Preferably, in the above-mentioned air flow pulverization system for plant polypeptide extraction, a filter layer is provided at the bottom of the cyclone collector to capture fine particles that are not centrifugally separated by the turbine classifier.

[0008] Preferably, in the above-mentioned air flow pulverizing system for plant polypeptide extraction, the air flow pressure in the pulverizing chamber is 130-140 MPa.

[0009] Preferably, in the above-mentioned air flow pulverizing system for extracting plant polypeptides, the outer side wall of the casing is provided with a pressure monitor connected to the inside of the casing to monitor the pressure in the cavity of the fluidized bed air flow pulverizer.

[0010] Preferably, in the above-mentioned air flow pulverizing system for extracting plant polypeptides, sealing components are provided at the pipe connections of the air flow pulverizing system, so that the air flow pulverizing system is a fully enclosed negative pressure environment.

[0011] Preferably, the above-mentioned air flow pulverizing system for plant polypeptide extraction also includes a control cabinet, which is electrically connected to the air compressor, air storage tank, cold dryer, fluidized bed air flow pulverizer, cyclone collector, dust collector, and induced draft fan.

[0012] It can be seen from the above technical solution that, compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The particle size of the crushed product is uniform, and the particle size can reach micron and submicron level;

[0014] 2. It is equipped with a turbine-type ultra-fine classifier, which has high classification accuracy and a narrow range of product particle size distribution;

[0015] 3. It uses high-pressure airflow and compressed air as the power. The expansion of the airflow at the nozzle causes a lower temperature, so a large amount of heat will not be generated during the operation. It is suitable for crushing heat-sensitive and low-melting-point materials;

[0016] 4. The moving material is crushed by collision, mainly concentrated at the convergence point of the crushing nozzle. No medium is used in the crushing process, and it will not be contaminated by metal and non-metal impurities due to wear. It can be carried out under sterile conditions, the product purity is high, and the fully enclosed negative pressure operation is anti-dust pollution, and the production environment is excellent and healthy;

[0017] 5. The structure is simple, with no moving parts, and the material does not pass through the nozzle, so the mechanical wear is minimal and the noise is low;

[0018] 6. Compact structure, small footprint, easy to disassemble and assemble, and can be used in joint operations;

[0019] 7. Low production energy consumption, compared with other types of air flow mills, it can save one third of energy;

[0020] 8. High degree of automation, automatic control can be adopted throughout the process, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 The accompanying drawing is a schematic structural diagram of the airflow pulverizing system of the utility model.

[0023] Figure 2 The attached drawing is a cross-sectional view of the internal structure of the air flow pulverizer of the present utility model.

[0024] In the figure, 1-air compressor, 2-air storage tank, 3-cold dryer, 4-feeder, 5-fluidized bed airflow pulverizer, 51-shell, 52-machine cover, 53-pulverizing chamber, 531-feeding port, 54-classifying chamber, 541-discharging port, 542-turbine classifier, 59-nozzle, 6-cyclone collector, 7-dust collector, 8-induced draft fan, 9-control cabinet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Please see attached Figure 1-2 , which is a jet milling system for extracting plant polypeptides disclosed by the utility model.

[0027] A pneumatic pulverizing system for extracting plant polypeptides mainly comprises an air compressor 1, an air storage tank 2, a cold dryer 3, a feeder 4, a fluidized bed pneumatic pulverizer 5, a cyclone collector 6, a dust collector 7, an induced draft fan 8 and a control cabinet 9, and the control cabinet 9 is electrically connected to the remaining devices.

[0028] The fluidized bed air flow pulverizer comprises a casing 51 and a cover 52 mounted at the top of the casing 51. The casing 51 and the cover 52 form a closed cavity. The cover 52 and the casing 51 can be detachably fixedly installed, for example, one or more combinations thereof such as screw connection, clamping connection, and pin connection, so as to facilitate the maintenance of the device by the staff and improve the service life of the device. The outer wall of the casing 51 is provided with a pressure monitor connected to the inside of the casing 51, so as to monitor the pressure in the cavity of the fluidized bed air flow pulverizer 5. A crushing chamber 53 for crushing raw materials and a grading chamber 54 for classifying and discharging the crushed raw materials are provided in the cavity. The grading chamber 54 is through-arranged above the crushing chamber 53. A nozzle 59 is provided at the bottom of the casing 51. A feed port 531 is provided at the upper end of the side wall of the crushing chamber 53. The bottom of the crushing chamber 53 is connected with the nozzle 59. A discharge port 541 is provided on the side wall of the grading chamber 54. A turbine classifier 542 connected to the discharge port 541 is provided at the top of the grading chamber 54, so as to centrifugally classify the crushed raw materials. It should be noted that the turbine classifier 542 forms a strong centrifugal force in the classifier. The powder mixture of the material entering the classifier first enters the classifying wheel. Under the action of centrifugal force, large or heavy particles are subject to a large centrifugal force, so they are thrown to the periphery of the classifying wheel to the side wall of the classifier and are no longer affected by the centrifugal force. They naturally fall into the crushing host to continue to be crushed or fall to the discharge port for collection. Small or light materials are less affected by the centrifugal force, hover inside the classifying wheel, and are carried to a high place by the induced draft of the induced draft fan, and flow along the pipeline to the next component to be classified or collected. The centrifugal force in the classifier can be adjusted by frequency conversion to adjust the rotation speed of the classifying wheel, so as to achieve the purpose of separating materials of specified particle size. In the turbine classifier 542, the fluid in the upper layer will be subjected to a higher centrifugal force, so it will be pulled to the periphery of the shaft under the action of centrifugal force, while the fluid in the lower layer will be subjected to a lower centrifugal force, so it will be maintained at the center of the shaft. Through this classification and separation process, the classifier separates solid particles or other impurities in the fluid. The fluid in the upper layer contains fewer solid particles or impurities, while the fluid in the lower layer contains more solid particles or impurities. The turbine classifier 542 is based on the action of centrifugal force and the momentum transfer of the fluid. The fluid is subjected to different centrifugal forces through the rotating shaft and the blades fixed on the shaft, so that it is arranged into different layers on the shaft, and the solid particles or impurities in the fluid can be effectively separated.

[0029] It should be noted that the nozzle 59 can form a supersonic airflow of gas into the grinding chamber 53, and the airflow pressure of the grinding chamber 53 is controlled between 130-140MPa, preferably 130MPa. The material enters the grinding chamber 53 through the feed port 531 without passing through the nozzle 59, so the mechanical wear is extremely small and the noise is low.

[0030] The top of the cold dryer 3 is pipe-connected to the nozzle 59 and the upper end of the side wall of the gas storage tank 2 respectively. The cold dryer 3 can cool and dry the gas. The lower end of the side wall of the gas storage tank 2 is pipe-connected to the gas outlet of the air compressor 1. The compressed air is provided to the gas storage tank 2 through the air compressor 1, and the gas storage tank 2 filters the stored gas. The bottom of the feeder 4 is pipe-connected to the feed port 531. The feeder 4 transports raw materials to the fluidized bed air flow pulverizer 5 through the feed port 531. The top of the cyclone collector 6 is pipe-connected to the discharge port 541 and the lower end of the side wall of the dust collector 7 respectively. The upper end of the side wall of the dust collector 7 is pipe-connected with an induced draft fan 8. The induced draft fan 8 draws out the waste gas in the fluidized bed air flow pulverizer 5, and then purifies the waste gas through the dust collector 7, and finally discharges the purified gas through the air outlet of the induced draft fan 8.

[0031] It should be noted that the exhaust gas enters the cyclone collector 6 through the inlet of the cyclone collector 6, and then under the action of the rotating airflow, the solid particles are separated and deposited at the bottom of the device, and the clean gas is discharged from the top. When the dust-containing airflow enters the cyclone collector 6 at a higher speed (for example, 12-25 m / s), the airflow rotates along the tangential direction of the outer cylinder, generating a large centrifugal force. Since the inertia force of the solid dust particles is much greater than that of the gas, they are thrown to the cylinder wall and slide down along the wall, gradually separated from the airflow, forming a particle concentration area, and finally entering the ash storage box through the ash discharge port. At the same time, when the rotating airflow moves downward, it moves closer to the center of the dust collector as the cone shrinks, forming an inner vortex, also known as a core flow. The purified gas is discharged outward through the exhaust pipe.

[0032] In addition, the cyclone collector 6 can further improve the collection effect through filtering separation and compressed air cleaning.

[0033] Preferably, the cyclone collector 6 is provided with a filter layer at the bottom to capture fine particles that are not centrifugally separated, and the compressed air inlet is used to remove powder particles on the wall to prevent clogging.

[0034] The working principle of the utility model is as follows: the air flow pulverizer cools, filters and dries the compressed air, and then forms a supersonic airflow through the nozzle and injects it into the pulverizing chamber. The material is fluidized under the action of the pressure difference, and the accelerated material converges at the intersection of multiple nozzles, generating violent impact, collision, friction and shearing to achieve ultrafine pulverization of particles. The pulverized fine powder is transported to the upper turbine classifier with the rising air flow, and the micro powder that meets the fineness requirements is discharged under the action of the centrifugal force of the classifying wheel and the suction force of the fan, and enters the lower level classification for further sorting or collection, and the purified gas is discharged by the induced draft fan. The fluidized bed air flow pulverizer in the utility model has a fast pulverizing rate and high efficiency, especially for heat-sensitive materials. It has a good pulverizing effect. The air flow pulverizing system for plant polypeptide extraction adopts automatic control throughout the process, and has the characteristics of wide application field, high finished product fineness, and high classification accuracy.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A jet milling system for extracting plant polypeptides, characterized in that: It comprises a fluidized bed air flow pulverizer (5), a feeder (4) and a cyclone collector (6) connected to the side wall of the fluidized bed air flow pulverizer (5) by pipes, and a cold dryer (3) connected to the bottom of the fluidized bed air flow pulverizer (5) by pipes; The fluidized bed airflow pulverizer (5) comprises a casing (51) and a cover (52) mounted on the top of the casing (51); the casing (51) and the cover (52) form a closed cavity; a pulverizing chamber (53) for pulverizing raw materials and a grading chamber (54) for grading and discharging the pulverized raw materials are provided in the cavity; the grading chamber (54) is provided through the top of the pulverizing chamber (53); a nozzle (59) is provided at the bottom of the casing (51); a feed port (531) is provided at the upper end of the side wall of the pulverizing chamber (53); the bottom of the pulverizing chamber (53) is connected to the nozzle (59); a discharge port (541) is provided on the side wall of the grading chamber (54); and a turbine classifier (542) connected to the discharge port (541) is provided at the top of the grading chamber (54) for centrifugally classifying the pulverized raw materials; The bottom of the feeder (4) is connected to the feed port (531) through a pipe, the top of the cyclone collector (6) is connected to the discharge port (54) through a pipe, and the top of the cold dryer (3) is connected to the nozzle (59) and the air compressor (1) through a pipe.

2. The air flow pulverizing system for extracting plant polypeptides according to claim 1, characterized in that: An air storage tank (2) is pipe-connected between the cold dryer (3) and the air compressor (1); the top of the cold dryer (3) is pipe-connected to the side wall of the air storage tank (2); and the top of the air storage tank (2) is pipe-connected to the air compressor (1).

3. The air flow pulverizing system for extracting plant polypeptides according to claim 2, characterized in that: The top of the cyclone collector (6) is also connected to the lower end of the side wall of the dust collector (7) through a pipe, and the upper end of the side wall of the dust collector (7) is connected to an induced draft fan (8) for discharging purified gas.

4. The air flow pulverizing system for extracting plant polypeptides according to claim 3, characterized in that: The cyclone collector (6) is provided with a filter layer at the bottom thereof for capturing fine particles that are not centrifugally separated by the turbine classifier (542).

5. The air flow pulverizing system for extracting plant polypeptides according to claim 4, characterized in that: The air flow pressure in the pulverizing chamber (53) is 130-140 MPa.

6. The air flow pulverizing system for extracting plant polypeptides according to claim 5, characterized in that: The outer wall of the casing (51) is provided with a pressure monitor connected to the interior of the casing (51) for monitoring the pressure in the cavity of the fluidized bed airflow pulverizer (5).

7. The air flow pulverizing system for extracting plant polypeptides according to claim 6, characterized in that: The pipeline connections of the airflow pulverizing system are all provided with sealing components, so that the airflow pulverizing system is a fully closed negative pressure environment.

8. The air flow pulverizing system for extracting plant polypeptides according to claim 7, characterized in that: It also includes a control cabinet (9), which is electrically connected to the air compressor (1), the air storage tank (2), the cold dryer (3), the feeder (4), the fluidized bed air flow pulverizer (5), the cyclone collector (6), the dust collector (7), and the induced draft fan (8).

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