Intelligent soybean meal protein blending system

Abstract

The utility model discloses an intelligent soybean meal protein blending system which is characterized in that an outlet of a temporary soybean meal storage bin is connected with an inlet of a lifting machine through a variable-frequency soybean meal discharging auger, and a first online monitor is arranged at an outlet of the variable-frequency soybean meal discharging auger; an outlet of the temporary beancurd skin storage bin is connected with an inlet of the elevator through large and small beancurd skin variable-frequency discharging augers respectively; an outlet in the upper end of the elevator is connected with a feeding port of the double-spiral mixing device, the bottom of the double-spiral mixing device is a double-U-shaped lower shell, two mixing and conveying spiral rotors are arranged in the double-U-shaped lower shell, the upper port of the double-U-shaped lower shell is covered with an upper cover plate, and a spraying cavity protruding upwards is formed in the end, close to the feeding port, of the upper cover plate. An atomizing nozzle is arranged at the top of the atomizing cavity; the lower part of a discharge hole of the double-helix mixing device is connected with a non-material-accumulation monitoring short section; and a second online monitor for monitoring the protein content is mounted in the center of the bottom wall of the non-material-accumulation monitoring short section. The system can improve the consistency and accuracy of the protein content of the soybean meal and create more profits for enterprises.

Description

Technical Field

[0001] The utility model relates to a soybean meal processing system, in particular to an intelligent blending system for soybean meal protein, belonging to the technical field of soybean meal processing equipment. Background Art

[0002] In a soybean oil extraction factory, after soybeans are processed through sections such as conditioning, crushing, peeling, embryo rolling, puffing, and leaching, products such as soybean meal, crude oil, and crushed soybean hulls will be obtained. Since soybean hulls will affect solvent consumption and residual oil in the leaching section, almost all oil processing plants will remove most of the soybean hulls in the peeling section to improve factory efficiency and reduce costs. This peeling process will obtain soybean meal with a high protein content. However, there is a market demand for soybean meal with two protein contents, 43% and 46% (high and low), so during production, the oil extraction factory will control the protein content of the soybean meal between 46.2% and 47% by adjusting the parameters of the peeling section, and quantitatively add the crushed soybean hulls back to the soybean meal conveying equipment before the soybean meal is bagged to adjust the protein content to 43% or 46%.

[0003] The above blending method has the following deficiencies: 1. The soybean meal and soybean hulls are not evenly mixed, resulting in poor product appearance, with the soybean hulls floating on top of the soybean meal;

[0004] 2. Fluctuations in the feeding output of the soybean meal and soybean hulls cause the protein content of the soybean meal after adding the hulls to be unstable, resulting in inconsistent protein content in the same batch of soybean meal;

[0005] 3. In order to avoid market complaints, enterprises adjust the protein content of the soybean meal to be higher than the required standard, resulting in reduced profits;

[0006] 4. After the soybean meal is stored in the warehouse for a long time, water will be lost, and the water content may be far lower than the national standard requirement of 12.5%. Therefore, before bagging, water needs to be added to the soybean meal to avoid losses. Installing only a water inlet on the conveying equipment cannot add water evenly, resulting in lumps in the finished soybean meal;

[0007] 5. Enterprises generally install the lens of the on-line detector for soybean meal on the side or bottom of the housing of the scraper conveyor or auger that conveys the soybean meal after adding the hulls. Since there is generally a safety distance of 5 - 10 mm between the conveying chain of the scraper conveyor and the spiral blade of the auger and the housing, when the on-line detector is working, there will be 5 - 10 mm of accumulated material in front of the lens that cannot be transported away in time, resulting in large errors or lags in the monitoring results of the on-line monitor, causing inaccurate control of adding the hulls and unqualified protein content in the finished soybean meal, etc.

[0008] The Chinese utility model patent with the publication number CN 204412099U discloses a mixer structure for stabilizing the protein quality of soybean meal finished products. This technical solution has the following defects:

[0009] 1. There is no temporary storage bin for soybean meal and soybean hulls, and the feeding output to the mixer is unstable.

[0010] 2. The feeding of soybean hulls uses a compressed air conveying device, which cannot accurately control the addition amount and is prone to dust generation.

[0011] 3. The atomizing microspray device has no flow control and cannot accurately add water.

[0012] 4. A single-shaft agitator is used, with a small output, low efficiency, and a short mixing time for soybean meal and soybean hulls, resulting in uneven mixing.

[0013] 5. There is no detection device for the mixed soybean meal, and the protein content of the soybean meal cannot be timely feedback. Summary of the Utility Model

[0014] The purpose of this part is to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of this application, and such simplifications or omissions shall not be used to limit the scope of the present utility model.

[0015] In view of the above and / or problems existing in the prior art, the present utility model is proposed.

[0016] The purpose of the present utility model is to overcome the problems existing in the prior art and provide an intelligent blending system for soybean meal protein, which can evenly mix soybean meal and soybean hulls, improve the consistency and accuracy of the protein content of soybean meal, increase the water content of soybean meal within the scope specified by the national standard, and create more profits for enterprises.

[0017] To solve the above technical problems, an intelligent blending system for soybean meal protein of the present utility model includes a soybean meal temporary storage bin and a soybean hull temporary storage bin. The outlet of the soybean meal temporary storage bin is connected to the lower soybean meal inlet of the elevator through a variable-frequency discharging auger for soybean meal, and a first on-line monitor for monitoring the protein content is provided at the outlet of the variable-frequency discharging auger for soybean meal;

[0018] The outlet of the soybean hull temporary storage bin is respectively connected to the inlets of a large variable-frequency discharging auger for soybean hulls and a small variable-frequency discharging auger for soybean hulls, and the outlets of the large variable-frequency discharging auger for soybean hulls and the small variable-frequency discharging auger for soybean hulls are respectively connected to the lower soybean hull inlets of the elevator;

[0019] The upper end outlet of the elevator is connected to the feed inlet of the double - helix mixing device. The bottom of the double - helix mixing device is a double - U - shaped lower housing. Two mixing and conveying screw rotors are arranged in the double - U - shaped lower housing. The upper port of the double - U - shaped lower housing is covered with an upper cover plate. One end of the upper cover plate close to the feed inlet is provided with a spray cavity bulging upward. An atomizing nozzle is arranged at the top of the spray cavity. Below the discharge outlet of the double - helix mixing device is connected with a non - accumulating material monitoring short section. A second on - line monitor for monitoring the protein content is installed at the center of the bottom wall of the non - accumulating material monitoring short section.

[0020] As an improvement of the present utility model, the mixing and conveying screw rotor includes a rotor shaft. A toothed helix is wound around the rotor shaft and radial - extending scraper plates are evenly arranged.

[0021] As a further improvement of the present utility model, a plurality of mixing rods are inserted and fixed on the toothed helix. Each mixing rod is parallel to the axis of the rotor shaft and symmetrically distributed with the axis of the rotor shaft as the center.

[0022] As a further improvement of the present utility model, reverse helices are respectively arranged at the discharge ends of the rotor shafts.

[0023] As a further improvement of the present utility model, the rotation directions of the two mixing and conveying screw rotors are opposite and each is provided with a driving mechanism.

[0024] As a further improvement of the present utility model, an air cannon for breaking arch is arranged at the lower part of the soybean meal temporary storage bin near the discharge outlet.

[0025] As a further improvement of the present utility model, the lower end discharge outlet of the non - accumulating material monitoring short section inclines away from the feed inlet. Side baffles are symmetrically arranged on both sides of the non - accumulating material monitoring short section. The lower ends of the two side baffles approach each other to form a flaring mouth for guiding materials to the middle. An active hinge matching the flaring mouth is arranged in the flaring mouth. The upper end of the active hinge is hinged to the upper part of the flaring mouth through a pin shaft. The lens of the second on - line monitor is located below the inclined bottom wall of the flaring mouth.

[0026] As a further improvement of the present utility model, a limiting screw rod is hinged on the inclined top wall of the non - accumulating material monitoring short section. The inner end of the limiting screw rod points to the top wall of the active hinge. A hand wheel is installed at the outer end of the limiting screw rod.

[0027] Compared with the prior art, the utility model has achieved the following beneficial effects: 1. In the double - helix mixing device, the preliminarily mixed soybean meal and soybean hulls achieve both conveying and mixing functions while realizing the conveying function. The conveying efficiency of the toothed helix is lower than that of the non - toothed helix, which will form a state of non - continuous and uniform conveying in the double - U - shaped lower housing, and the materials in different areas of the device have the opportunity to mix with each other; during the process of the materials being conveyed by the toothed helix towards the discharge port, they will also be lifted by the scraper, and at the same time, the mixing rod stirs, finally achieving the effect of tumbling and uniformly mixing the materials.

[0028] 2. The double - helix mixing device also has the function of adjusting the moisture content of soybean meal. Atomizing nozzles are set on the upper cover plate of the device. Through adding water and pressurizing with compressed air to achieve the atomization effect, it is evenly sprayed onto the soybean - meal and soybean - hull mixture, and uniformly mixed under the action of the mixing and conveying spiral shaft, achieving the purpose of uniformly adding water, improving economic benefits, and avoiding caking and unevenness problems caused by local water addition.

[0029] 3. The non - accumulating monitoring short section adjusts the length of the limit screw rod extending into the shell through the handwheel outside the shell to limit the maximum angle at which the movable hinge is pushed open by soybean meal, achieving the purpose of controlling the thickness and flow rate of the soybean - meal layer flowing in front of the lens of the on - line monitor, ensuring that the on - line monitor is in the best working state. It solves the problem of material accumulation in front of the lens of the on - line monitor, ensuring accurate and non - delayed measurement data. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings. The drawings are only for reference and explanation, not for limiting the present utility model. Among them:

[0031] Figure 1 is the flow chart of the intelligent blending system for soybean - meal protein of the present utility model;

[0032] Figure 2 is the three - dimensional view of the double - helix mixing device of the present utility model;

[0033] Figure 3 is the front view of the double - helix mixing device of the present utility model;

[0034] Figure 4 is the enlarged cross - sectional view of the double - helix mixing device of the present utility model;

[0035] Figure 5 is the enlarged view of the mixing and conveying spiral rotor in the double - helix mixing device;

[0036] Figure 6This is the front view of the non-accumulation monitoring short section in the present utility model;

[0037] Figure 7 is Figure 6 the cross-sectional view of;

[0038] In the figure: 1. Soybean meal temporary storage bin; RL1. Radar level gauge; GL1. High level indicator; DL1. Low level indicator; 1a. Air cannon;

[0039] 2. Variable-frequency discharging auger for soybean meal; 3. First on-line monitor;

[0040] 4. Soybean skin temporary storage bin; RL2. Radar level gauge; GL2. High level indicator; DL2. Low level indicator;

[0041] 5. Variable-frequency discharging large auger for soybean skin; 6. Variable-frequency discharging small auger for soybean skin; 7. Elevator;

[0042] 8. Double helix mixing device; 8a. Mixing feed inlet; 8b. Upper cover plate; 8c. Atomizing nozzle; 8d. Double U-shaped lower housing; 8e. Rotor shaft; 8f. Tooth-shaped helix; 8g. Scraping plate; 8h. Mixing rod; 8j. Reverse helix; 8k. Driving mechanism;

[0043] 9. Non-accumulation monitoring short section; 9a. Side baffle; 9b. Movable hinge; 9c. Handwheel; 9d. Limit screw rod;

[0044] 10. Second on-line monitor. Detailed implementation mode

[0045] In the following description of the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating that the device must have a specific orientation.

[0046] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further elaborated below with reference to specific drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model.

[0048] As Figures 1 to 7As shown, the soybean meal protein intelligent blending system of the utility model comprises a soybean meal temporary storage bin 1, a soybean hull temporary storage bin 4, an elevator 7 and a double-screw mixing device 8. The soybean meal temporary storage bin 1 and the soybean hull temporary storage bin 4 are arranged in parallel and close to the elevator 7. An air cannon 1a is provided at the lower part of the soybean meal temporary storage bin 1 near the discharge port. The air jet of the air cannon extends into the bin, which can be used to break up the arches of the soybean meal after long-term storage.

[0049] The outlet of the soybean meal temporary storage bin 1 is connected to the soybean meal inlet at the lower end of the elevator 7 through the soybean meal variable frequency discharging auger 2. The outlet of the soybean meal variable frequency discharging auger 2 is provided with a first online monitor 3 for monitoring the protein content of the soybean meal before blending.

[0050] The outlet of the bean skin temporary storage bin 4 is respectively connected to the inlet of the large bean skin variable frequency discharging auger 5 and the small bean skin variable frequency discharging auger 6, and the outlets of the large bean skin variable frequency discharging auger 5 and the small bean skin variable frequency discharging auger 6 are respectively connected to the bean skin inlet at the lower end of the elevator 7.

[0051] The top of soybean meal temporary storage bin 1 is provided with radar level meter RL1, and the upper and lower side walls are provided with high level meter GL1 and low level meter DL1 respectively. The top of soybean hull temporary storage bin 4 is provided with radar level meter RL2, and the upper and lower side walls are provided with high level meter GL2 and low level meter DL2 respectively. The storage volume in the temporary storage bin can be continuously monitored, and the feed and discharge volume of the temporary storage bin can be dynamically adjusted.

[0052] The upper outlet of the elevator 7 is connected to the mixing feed port 8a of the double-helix mixing device 8. The bottom of the double-helix mixing device 8 is a double U-shaped lower shell 8d. Two mixing and conveying spiral rotors are arranged in the double U-shaped lower shell 8d. The upper port of the double U-shaped lower shell 8d is covered with an upper cover plate 8b. The upper cover plate 8b is provided with a spray cavity that bulges upward at one end close to the feed port, and an atomizing nozzle 8c is provided at the top of the spray cavity. The upper cover plate 8b is fixed by a flange to prevent dust generated by soybean meal and soybean skin from overflowing during the mixing process, and no water vapor will overflow when water is added to the atomizing nozzle 8c. An emergency discharge door is provided on the double U-shaped lower shell 8d, which can quickly discharge materials when an accidental blockage occurs, reducing the workload of removing the upper cover plate 8b to remove materials.

[0053] One end of the atomizing nozzle 8c is connected to compressed air, and the other end is connected to the water supply system. Before the water supply system is connected to the atomizing nozzle 8c, a regulating valve and a flow meter are configured to control and monitor the amount of water added. The control method of the amount of water added to the soybean meal is as follows: the PLC system calculates the current output according to the operating frequency of the soybean meal variable frequency discharging auger 2, and then calculates the amount of water added in combination with the difference between the soybean meal moisture measured by the first online monitor 3 and the target value. At this time, this water addition data will be used as the setting value of the flow meter, and the regulating valve will be automatically opened to supply water to the atomizing nozzle 8c. The PLC system will also compare the soybean meal moisture data measured by the second online monitor 10 with the target value to correct the setting value of the flow meter and the opening of the regulating valve.

[0054] Below the discharge port of the double - helix mixing device 8, there is a non - material - accumulation monitoring short section 9 connected. At the center of the bottom wall of the non - material - accumulation monitoring short section 9, there is a second on - line monitor 10 for monitoring the protein content. The discharge port of the non - material - accumulation monitoring short section 9 is connected to the packing system.

[0055] The operating frequencies of the soybean meal variable - frequency discharge auger 2, the skin variable - frequency discharge large auger 5 and the skin variable - frequency discharge small auger 6, and the soybean meal protein data of the first on - line monitor 3 and the second on - line monitor 10 are all connected to the PLC system. The PLC can automatically calculate the frequency value of the skin variable - frequency discharge large auger 5 according to the frequency value of the soybean meal variable - frequency discharge auger 2 and the protein data measured by the first on - line monitor 3 and output it to the frequency converter to control the preliminary addition amount of the skin. The skin variable - frequency discharge large auger 5 is responsible for adjusting the protein content in the soybean meal to about 95% of the target value. Then the PLC system calculates the frequency value of the skin variable - frequency discharge small auger 6 according to the difference between the protein data measured by the second on - line monitor 10 and the target value and outputs it to the frequency converter to control the precise addition amount of the skin. This system can dynamically adjust the addition amount of the skin according to the fluctuations of the output and the initial protein content of the blending system. The error between the protein content of the final finished soybean meal and the target value can be kept within 0.2%.

[0056] The mixing and conveying spiral rotor includes a rotor shaft 8e. A toothed spiral 8f is wound around the rotor shaft 8e and evenly provided with radially extending scraper plates 8g. Multiple mixing rods 8h are inserted and fixed on the toothed spiral 8f. Each mixing rod 8h is parallel to the axis of the rotor shaft and symmetrically distributed around the axis of the rotor shaft.

[0057] At the discharge end of the rotor shaft 8e, there are reverse spirals 8j respectively. The rotation directions of the two mixing and conveying spiral rotors are opposite and each is provided with a driving mechanism 8k. Since the rotation directions of the toothed spiral 8f and the reverse spiral 8j on the two mixing and conveying spiral rotors of this device are both opposite, and the rotation directions of the driving devices are also opposite, the materials in the working areas of the two mixing and conveying spiral rotors will all tend to the middle of the double - U - shaped lower housing 8d. The materials in the two areas will impact and mix with each other in the middle area of the double - U - shaped lower housing 8d. Through the combined action of the above - mentioned various measures, it is possible to achieve good mixing effects while transporting the soybean meal and the skin.

[0058] The lower discharge port of the non - material - accumulation monitoring short section 9 is inclined in the direction away from the feed port, forming an angle of 50° with the ground. Side baffles 9a are symmetrically arranged on both sides of the non - material - accumulation monitoring short section 9. The lower ends of the two side baffles 9a approach each other to form a flared opening for guiding materials to the middle. This flared opening constitutes a three - sided hollowed - out channel. The lens of the second on - line monitor 10 is located below the inclined bottom wall of the flared opening.

[0059] The bell mouth is provided with a matching movable hinge 9b. The upper end of the movable hinge 9b is hinged to the upper part of the bell mouth through a pin shaft. The lower end of the movable hinge 9b forms a certain angle with the ground to ensure that the movable hinge 9b is closed with the bottom of the channel when there is no soybean meal passing through; when there is soybean meal passing through, the movable hinge 9b is pushed open by the soybean meal.

[0060] A limit screw rod 9d is hinged on the inclined top wall of the non-accumulation monitoring short section 9. The inner end of the limit screw rod 9d points to the top wall of the movable hinge 9b, and a hand wheel 9c is installed at the outer end of the limit screw rod 9d. The extending length of the limit screw rod 9d is adjusted through the hand wheel 9c to limit the maximum angle at which the movable hinge 9b is pushed open by the soybean meal. Part of the soybean meal flows through the channel formed by the bell mouth, and the remaining soybean meal overflows from above the movable hinge 9b to achieve the purpose of non-accumulation monitoring by the second on-line monitor 10. A reserved hole is provided at the bottom of the bell mouth channel for docking with the lens of the second on-line monitor 10.

[0061] The soybean meal enters the soybean meal temporary storage bin 1 from the discharge port of the previous process section for temporary storage, and the discharge is quantitatively controlled by the soybean meal variable-frequency discharge auger 2 to solve the problem of fluctuating feeding output in the previous process section; the bean dregs enter the bean dregs temporary storage bin 4 from the discharge port of the previous process section for temporary storage, and the discharge is quantitatively controlled by the bean dregs variable-frequency discharge large and small augers, also solving the problem of fluctuating feeding output in the previous process section.

[0062] When the soybean meal variable-frequency discharge auger 2 is started, the soybean meal can enter the lower end inlet of the elevator 7 quantitatively through frequency control. At this time, the first on-line monitor 3 detects the protein content of the soybean meal before blending. The frequency value of the soybean meal variable-frequency discharge auger 2 and the protein content value measured by the first on-line monitor 3 are read by the PLC system, calculated and processed, and then the frequency value of the bean dregs variable-frequency discharge large auger 5 is output and the bean dregs variable-frequency discharge large auger 5 is automatically started. The bean dregs are quantitatively added to the soybean meal, and the soybean meal and the bean dregs enter the lower end inlet of the elevator 7 together and are conveyed upward by the elevator 7 for preliminary mixing. The preliminary mixture of the soybean meal and the bean dregs enters the double-screw mixing device 8 for full mixing, and then passes through the non-accumulation monitoring short section 9 to the lens of the second on-line monitor 10 to monitor the protein content of the preliminarily blended soybean meal. The PLC system then calculates the frequency of the bean dregs variable-frequency discharge small auger 6 according to the difference between the protein data measured by the second on-line monitor 10 and the target value and automatically starts the bean dregs variable-frequency discharge small auger 6 to quantitatively add the bean dregs to the elevator 7. While adjusting the protein content of the soybean meal, the atomizing nozzle 8c also automatically sprays water into the soybean meal, and finally the finished soybean meal with accurate protein content, good consistency and accurate moisture enters the packing system for packing and loading for sale.

[0063] The above is only a preferred and feasible embodiment of the present utility model, which shows and describes the basic principles, main features and advantages of the present utility model. It is not intended to limit the patent protection scope of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. Except for the above embodiments, without departing from the spirit and scope of the present utility model, the present utility model may have other implementation manners. The present utility model will also have various changes and improvements. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope required by the present utility model. The protection scope required by the present utility model is defined by the appended claims and their equivalents. The technical features not described in the present utility model can be realized by or adopted the prior art, and will not be elaborated herein.

Claims

1. An intelligent blending system for soybean meal protein, comprising a temporary storage bin for soybean meal and a temporary storage bin for soybean hulls, characterized in that, The outlet of the soybean meal temporary storage bin is connected to the lower soybean meal inlet of the elevator through a variable-frequency soybean meal discharging auger, and a first on-line monitor for monitoring the protein content is provided at the outlet of the variable-frequency soybean meal discharging auger; The outlet of the soybean hull temporary storage bin is respectively connected to the inlets of a large variable-frequency soybean hull discharging auger and a small variable-frequency soybean hull discharging auger, and the outlets of the large variable-frequency soybean hull discharging auger and the small variable-frequency soybean hull discharging auger are respectively connected to the lower soybean hull inlets of the elevator; The upper end outlet of the elevator is connected to the feed inlet of the double-screw mixing device. The bottom of the double-screw mixing device is a double-U-shaped lower housing. Two mixing and conveying screw rotors are provided in the double-U-shaped lower housing. The upper port of the double-U-shaped lower housing is covered with an upper cover plate. One end of the upper cover plate close to the feed inlet is provided with a spray chamber bulging upward, and an atomizing nozzle is provided at the top of the spray chamber; A non-accumulation monitoring short section is connected below the discharge port of the double-screw mixing device, and a second on-line monitor for monitoring the protein content is installed at the center of the bottom wall of the non-accumulation monitoring short section.

2. The intelligent blending system for soybean meal protein according to claim 1, wherein: The mixing and conveying screw rotor includes a rotor shaft, on which a toothed spiral is wound and radial scraping plates are evenly provided.

3. The intelligent blending system for soybean meal protein according to claim 2, wherein: Multiple mixing rods are inserted and fixed on the toothed spiral, and each mixing rod is parallel to the axis of the rotor shaft and symmetrically distributed around the axis of the rotor shaft.

4. The intelligent blending system for soybean meal protein according to claim 2, wherein: Reverse spirals are respectively provided at the discharge ends of the rotor shafts.

5. The intelligent blending system for soybean meal protein according to claim 1, wherein: The rotation directions of the two mixing and conveying screw rotors are opposite and each is provided with a driving mechanism.

6. The intelligent blending system for soybean meal protein according to claim 1, wherein: An air cannon for breaking arch is provided at the lower part of the soybean meal temporary storage bin near the discharge port.

7. The intelligent blending system for soybean meal protein according to any one of claims 1 to 6, characterized in that: The lower end discharge port of the non-accumulation monitoring short section inclines away from the feed inlet. Side baffles are symmetrically provided on both sides of the non-accumulation monitoring short section. The lower ends of the two side baffles approach each other to form a flaring mouth for guiding materials to the middle. A movable hinge matching the flaring mouth is provided in the flaring mouth. The upper end of the movable hinge is hinged to the upper part of the flaring mouth through a pin shaft, and the lens of the second on-line monitor is located below the inclined bottom wall of the flaring mouth.

8. The intelligent blending system for soybean meal protein according to claim 7, wherein: A limiting screw rod is hinged on the inclined top wall of the non-accumulation monitoring short section. The inner end of the limiting screw rod points to the top wall of the movable hinge, and a hand wheel is installed at the outer end of the limiting screw rod.

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