Spiral feeding equipment for food additive production

Abstract

The invention discloses spiral feeding equipment for food additive production. The spiral feeding equipment comprises a rack; the concentration box is rotationally arranged on one side of the top of the rack, and a feeding pipe is fixed to the bottom of the concentration box; the feeding barrel is mounted at the bottom end of the feeding pipe in an inclined manner; the air sweeping assembly is arranged at the top end of the feeding barrel; and the discharging pipe is installed on the feeding barrel, and a sealing assembly is arranged on the outer wall of the discharging pipe. The quantitative feeding function is achieved, the requirement for accurate matching of different food additive raw materials in the production process is met, the sealing effect of the discharging pipe can be guaranteed, material leakage and external impurity entering are prevented, the hygiene of the production environment and the quality of the materials are guaranteed, the food additive raw materials in the classification cavity are stirred, and the production efficiency is improved. The food additive raw materials can better enter the quantitative discharging assembly, and the additive raw materials are prevented from being accumulated and blocking an inlet of the material guiding barrel.

Description

Technical Field

[0001] The present invention relates to the technical field of food additive production, and specifically discloses a spiral feeding device for food additive production. Background Art

[0002] Food additives refer to chemical synthetic or natural substances added to food to improve the quality, color, aroma, and taste of food, as well as for anti-corrosion and processing technology needs. Many food additives are toxic, and some are highly toxic. However, as long as food additives are within the specified scope and dosage in food, they are harmless to the human body. In the production process of food additives, various raw materials need to be accurately and efficiently transported to different processing links. Due to its simple structure and stable transportation, the spiral feeding device is widely used in food additive production.

[0003] After retrieval, a detachable spiral feeder that is easy to operate with the authorization announcement number of CN113200318B includes a feeding hopper. A fixing frame is fixedly installed outside the feeding hopper. A rotating connector is movably installed inside the fixing frame. A servo motor is fixedly installed above the rotating connector. A first feeding pipe with the top connected to the feeding hopper is fixedly installed outside the servo motor. A connecting shaft located outside the first feeding pipe is fixedly installed on the right side of the fixing frame. For this detachable spiral feeder that is easy to operate, by setting the fixing frame to fixedly install the feeding hopper and setting the receiving groove opened at the top of the first feeding pipe to be rotatably connected to the bottom of the feeding hopper, the connection between the feeding hopper and the first feeding pipe is stable and will not be detached during adjustment. By setting the rotating connector to fixedly connect the servo motor and rotatably connect it to the fixing frame.

[0004] Combined with the above patent, it is found that there are still some problems to be solved urgently in the actual use of the existing spiral feeding equipment: the feeding hopper of the spiral feeder is prone to material blockage. The feeding hopper usually has a converging structure with a narrow bottom. When the material has a certain viscosity or uneven particles, it is extremely easy to be squeezed and accumulated at the bottom, hindering the smooth entry of the material into the spiral conveying part, thereby affecting the continuity and efficiency of the entire production process. Therefore, there is an urgent need for a spiral feeding device for food additive production to solve the above problems. Summary of the Invention

[0005] In view of the problems in the related art, the present invention proposes a spiral feeding device for food additive production to solve the above-mentioned technical problems existing in the existing related technologies.

[0006] The technical solution of the present invention is realized as follows:

[0007] A spiral feeding device for food additive production includes:

[0008] A frame;

[0009] A container, which is rotatably arranged on one side of the top of the frame, and a feed pipe is fixed to the bottom of the container;

[0010] A feeding cylinder, which is installed obliquely at the bottom end of the feed pipe;

[0011] An air-sweeping assembly, which is arranged at the top end of the feeding cylinder;

[0012] A discharge pipe, which is installed on the feeding cylinder, and a sealing assembly is arranged on the outer wall of the discharge pipe;

[0013] An aggregate bin, which is installed on the top of the container, and a partition plate is installed on the inner wall of the aggregate bin. The partition plate divides the inside of the aggregate bin into multiple classification cavities with the same volume. One end of the bottom of each classification cavity is fixed with a guide cylinder extending into the container;

[0014] A quantitative feeding assembly, which is attached to the inside of the guide cylinder;

[0015] A lifting assembly, which is installed between the quantitative feeding assembly and the sealing assembly;

[0016] An anti-blocking assembly, which is arranged inside the classification cavity.

[0017] The present invention is further configured such that a spiral shaft is rotatably arranged on the inner wall of the feeding cylinder, a driving motor for driving the spiral shaft to rotate is installed at the bottom end of the feeding cylinder, and a variable-pitch auger blade that fits against the inner wall of the feeding cylinder is installed on the outer wall of the spiral shaft.

[0018] The present invention is further configured such that support seats are fixed on both sides of the top of the frame, and rotary shafts are rotatably arranged on the support seats. The container is fixedly installed between one ends of the two rotary shafts. Universal wheels are installed at the four corners of the bottom of the frame. A mounting seat is installed on the outer wall of the feeding cylinder, and a first hydraulic cylinder is rotatably arranged between the bottom of the mounting seat and one end of the top of the frame.

[0019] The present invention is further configured such that the quantitative feeding assembly includes a quantitative frame that fits against the inner wall of the guide cylinder, a threaded column is fixed in the middle of the top of the quantitative frame, the height of the quantitative frame is less than the height of the guide cylinder, the quantitative frame includes upper and lower sealing disks, and a plurality of connecting columns are fixed between the upper and lower sealing disks. A conical seat is fixed on the top of the lower sealing disk.

[0020] The present invention is further configured such that the sealing assembly includes a sleeve sleeved on the outer wall of the discharge pipe, and a ball sleeve is sleeved at the bottom of the outer wall of the sleeve. A sealing cover is movably attached to the outer wall of the ball sleeve. A connection groove is formed in the inner wall of the ball sleeve, and a fixing ring inserted into the connection groove is fixed on the outer wall of the sleeve. A second spring is installed between the bottom of the fixing ring and the bottom of the connection groove.

[0021] The present invention is further configured such that the lifting assembly includes an L-shaped plate installed on one side of the top of the mounting base, and a second hydraulic cylinder is installed on the top of the L-shaped plate. A lifting frame is installed at the piston end of the second hydraulic cylinder. A connecting frame is fixed to the bottom of the lifting frame. One end of the connecting frame is installed on the outer wall of the sleeve, and the other end of the connecting frame is fixed with a lifting disc. Connecting rods are fixed between the tops of the threaded columns and the bottom of the lifting disc.

[0022] The present invention is further configured such that the anti-blocking assembly includes an L-shaped frame installed on the inner wall of the classification chamber. An installation hole is formed at one end of the L-shaped frame. A rotating cylinder is rotatably connected to the inner wall of the installation hole. The bottom end of the connecting rod is inserted into the rotating cylinder. A threaded groove is formed in the inner wall of the rotating cylinder. The outer wall of the threaded column is screwed with the inner wall of the threaded groove. A transmission shaft and a stirring shaft are respectively rotatably connected to the top and bottom of the inner wall of the L-shaped frame. Transmission wheels are installed on the outer walls of the transmission shaft and the stirring shaft, and a transmission belt is connected between the two transmission wheels. A bevel gear is installed on one end of the transmission shaft and the outer wall of the rotating cylinder, and the two bevel gears are meshed with each other. A stirring blade is installed on one side of the outer wall of the stirring shaft, and the stirring blade is close to the metering frame.

[0023] The present invention is further configured such that inclined seats are installed on the bottom inner wall of the classification chamber, and arc-shaped grooves are provided at one ends of the inclined seats. The four surrounding bottoms of the centralized box are designed to be inclined.

[0024] The present invention is further configured such that a hollow channel is formed in the spiral shaft, and an air hood is installed at the top end of the hollow channel. An air inlet pipe is rotatably connected to the inner wall of the air hood. An air pump is installed on the other side of the top of the mounting base, and the exhaust end of the air pump is fixedly connected to the air inlet pipe. A plurality of nozzles are installed at the top and bottom of the hollow channel, and the positions of the nozzles are staggered with the positions of the blades of the variable-pitch auger blades. The inner wall of the nozzle is designed in a T shape. A plugging head is attached to the inner wall of the nozzle. First springs are installed between the top of the plugging head and the top inner wall of the nozzle. Air injection holes are formed in the nozzle at equidistant intervals, and the plugging head seals the air injection holes.

[0025] The present invention is further configured such that a controller is installed on one side of the frame, and the controller is electrically connected to the air pump and the drive motor. The first hydraulic cylinder and the second hydraulic cylinder are connected to a hydraulic system.

[0026] Advantages of the present invention:

[0027] A screw feeding device for food additive production provided by the present invention divides the aggregate box into multiple classification cavities of the same volume through a partition plate arranged in the aggregate box, which can classify and store different types of food additive raw materials. The height of the quantitative feeding assembly is adjusted by a lifting assembly, so that the quantitative rack passes through the material guiding cylinder to realize the function of quantitative feeding, meeting the precise proportioning requirements of different food additive raw materials in the production process.

[0028] A screw feeding device for food additive production provided by the present invention, through a provided sealing assembly, can reduce the height of the sealing assembly under the action of the lifting assembly, so that the sealing assembly closely adheres to the feeding port of the food additive production equipment, and an elastic force is provided by a second spring. When an external force acts on the sealing cover, the ball sleeve can move within a certain range, enabling the sealing cover to better fit around the discharge pipe, ensuring the sealing effect at the discharge pipe, preventing material leakage and entry of external impurities, and ensuring the hygiene of the production environment and the quality of the materials.

[0029] A screw feeding device for food additive production provided by the present invention, through a provided anti-blocking assembly, when the threaded column rises and falls with the lifting assembly, since the threaded column is screwed with the threaded groove on the inner wall of the rotating cylinder, the rotating cylinder will rotate. The rotation of the rotating cylinder drives the transmission shaft to rotate through bevel gears, and the transmission shaft drives the stirring shaft and stirring blades to rotate through a transmission belt, thereby using the rotating stirring blades to stir the food additive raw materials in the classification cavity, enabling the food additive raw materials to better enter the quantitative feeding assembly and preventing the additive raw materials from accumulating and blocking the inlet of the material guiding cylinder.

[0030] A screw feeding device for food additive production provided by the present invention has a variable pitch design for the screw blades. The pitch at the end near the feeding port is smaller, and as the material is conveyed towards the discharge port, the pitch gradually increases. This design enables the material to be subjected to a greater extrusion force during the initial feeding stage, facilitating the compaction of the material and its smooth introduction into the feeding cylinder. During the conveying process, as the pitch increases, the pressure on the material gradually decreases, avoiding damage to the material due to excessive extrusion and ensuring the conveying speed and stability of the material.

[0031] A screw feeding device for food additive production provided by the present invention, through a provided air sweeping assembly, uses an air pump to introduce gas into the hollow channel through an air inlet pipe, and the gas is ejected through a nozzle to blow the material on the variable pitch auger blades, preventing the material from adhering to the blades. At the same time, the staggered positions of the nozzles and the blades can make the blowing more comprehensive, further ensuring the accuracy of feeding and the cleanliness of the equipment. And the plugging head on the inner wall of the nozzle seals the air spraying holes under the action of a first spring. When there is sufficient air pressure, the plugging head is pushed open, and air is ejected from the air spraying holes. Description of the Drawings

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a three-dimensional structure schematic diagram of a screw feeding device for food additive production according to the present invention.

[0034] Figure 2 It is a three-dimensional sectional view of a screw feeding device for food additive production according to the present invention.

[0035] Figure 3 It is a structure schematic diagram of the mounting seat and classification cavity of a screw feeding device for food additive production according to the present invention.

[0036] Figure 4 It is a sectional view of the aggregate box and centralized box of a screw feeding device for food additive production according to the present invention.

[0037] Figure 5 It is a structure schematic diagram of the thread groove and guide cylinder of a screw feeding device for food additive production according to the present invention.

[0038] Figure 6 It is a structure schematic diagram of the threaded column and quantitative rack of a screw feeding device for food additive production according to the present invention.

[0039] Figure 7 It is a structure schematic diagram of the lifting assembly of a screw feeding device for food additive production according to the present invention.

[0040] Figure 8 It is a structure schematic diagram of the sealing assembly according to the present invention.

[0041] Figure 9 It is a structure schematic diagram of the air sweeping assembly of a screw feeding device for food additive production according to the present invention.

[0042] Figure 10 It is a structure schematic diagram of the equal plug and hollow channel of a screw feeding device for food additive production according to the present invention.

[0043] In the figure:

[0044] 1. Frame; 2. Controller; 3. Centralized box; 4. Aggregate box; 5. Anti-blocking component; 501. L-shaped frame; 502. Rotary drum; 503. Bevel gear; 504. Transmission shaft; 505. Transmission belt; 506. Stirring shaft; 507. Stirring blade; 508. Threaded groove; 6. Lifting component; 601. L-shaped plate; 602. Second hydraulic cylinder; 603. Lifting frame; 604. Connecting frame; 605. Lifting disc; 606. Connecting rod; 7. Mounting seat; 8. Air sweeping component; 801. Air pump; 802. Air inlet pipe; 803. Air hood; 804. Nozzle; 805. Air injection hole; 806. Hollow channel; 807. Plugging head; 808. First spring; 9. Feeding cylinder; 10. Discharge pipe; 11. Sealing component; 1101. Sleeve; 1102. Sealing cover; 1103. Second spring; 1104. Ball sleeve; 1105. Connecting groove; 1106. Fixed ring; 12. First hydraulic cylinder; 13. Screw shaft; 14. Variable pitch auger blade; 15. Feed pipe; 16. Driving motor; 17. Inclined seat; 18. Partition board; 19. Support seat; 20. Rotating shaft; 21. Classification cavity; 22. Threaded column; 23. Quantitative frame; 2301. Sealing disc; 2302. Connecting column; 2303. Conical seat; 24. Guide cylinder. Detailed implementation mode

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art shall fall within the protection scope of the present invention.

[0046] Embodiment 1:

[0047] According to an embodiment of the present invention,

[0048] Please refer to Figure 1-10 , a screw feeding device for food additive production, comprising:

[0049] Frame 1;

[0050] Centralized box 3, the centralized box 3 is rotatably arranged on one side of the top of the frame 1, and a feed pipe 15 is fixed to the bottom of the centralized box 3;

[0051] Feeding cylinder 9, the feeding cylinder 9 is installed obliquely at the bottom end of the feeding pipe 15. A spiral shaft 13 is rotatably arranged on the inner wall of the feeding cylinder 9, and a driving motor 16 for driving the spiral shaft 13 to rotate is installed at the bottom end of the feeding cylinder 9. A variable-pitch auger blade 14 that fits against the inner wall of the feeding cylinder 9 is installed on the outer wall of the spiral shaft 13. The pitch of the variable-pitch auger blade 14 is smaller at one end close to the feeding port, and gradually increases as the material is conveyed towards the discharging port. This design enables the material to be subjected to a greater extrusion force during the initial feeding stage, facilitating the compaction of the material and its smooth introduction into the feeding cylinder 9. During the conveying process, as the pitch increases, the pressure on the material gradually decreases, avoiding damage to the material due to excessive extrusion, and at the same time ensuring the conveying speed and stability of the material;

[0052] Air-sweeping assembly 8, the air-sweeping assembly 8 is arranged at the top end of the feeding cylinder 9;

[0053] Discharging pipe 10, the discharging pipe 10 is installed on the feeding cylinder 9, and a sealing assembly 11 is arranged on the outer wall of the discharging pipe 10. The sealing assembly 11 includes a sleeve 1101 sleeved on the outer wall of the discharging pipe 10, and a ball sleeve 1104 is sleeved at the bottom of the outer wall of the sleeve 1101. A sealing cover 1102 is movably fitted against the outer wall of the ball sleeve 1104. A connecting groove 1105 is opened on the inner wall of the ball sleeve 1104, and a fixing ring 1106 inserted into the connecting groove 1105 is fixed on the outer wall of the sleeve 1101. A second spring 1103 is installed between the bottom of the fixing ring 1106 and the bottom of the connecting groove 1105, enabling the sealing assembly 11 to closely adhere to the feeding port of the food additive production equipment, and providing an elastic force through the second spring 1103. When an external force acts on the sealing cover 1102, the ball sleeve 1104 can move within a certain range, enabling the sealing cover 1102 to better fit around the discharging pipe 10, ensuring the sealing effect at the discharging pipe 10, preventing material leakage and the entry of external impurities;

[0054] Aggregate bin 4, the aggregate bin 4 is installed on the top of the centralized bin 3, and a partition plate 18 is installed on the inner wall of the aggregate bin 4. The partition plate 18 divides the interior of the aggregate bin 4 into multiple classification chambers 21 of the same volume. Guide tubes 24 extending into the centralized bin 3 are fixed at one end of the bottom of each classification chamber 21, and different types or specifications of food additive raw materials can be stored separately;

[0055] Quantitative feeding component, the quantitative feeding component fits inside the guide tube 24. The quantitative feeding component includes a quantitative frame 23 that fits against the inner wall of the guide tube 24, and a threaded column 22 is fixed in the middle of the top of the quantitative frame 23. The height of the quantitative frame 23 is less than the height of the guide tube 24. The quantitative frame 23 includes two upper and lower sealing disks 2301, and a plurality of connecting columns 2302 are fixed between the two upper and lower sealing disks 2301. A conical seat 2303 is fixed on the top of the lower sealing disk 2301, realizing the quantitative feeding of the food additive raw materials entering the centralized bin 3 from the classification chamber 21;

[0056] Lifting assembly 6 is installed between the metering feeding assembly and the sealing assembly 11. The lifting assembly 6 includes an L-shaped plate 601 installed on one side of the top of the mounting base 7, and a second hydraulic cylinder 602 is installed on the top of the L-shaped plate 601. A lifting frame 603 is installed at the piston end of the second hydraulic cylinder 602. A connecting frame 604 is fixed to the bottom of the lifting frame 603. One end of the connecting frame 604 is installed on the outer wall of the sleeve 1101, and a lifting disc 605 is fixed to the other end of the connecting frame 604. Connecting rods 606 are fixed between the tops of the threaded columns 22 and the bottom of the lifting disc 605. By using the second hydraulic cylinder 602 of the lifting assembly 6 to push the lifting frame 603 to move up and down, the lifting frame 603 drives the sleeve 1101 and the lifting disc 605 to lift synchronously through the connecting frame 604, thereby realizing the lifting control of the metering frame 23 and the sealing assembly 11;

[0057] Anti-blocking assembly 5 is arranged inside the sorting chamber 21. The anti-blocking assembly 5 includes an L-shaped frame 501 installed on the inner wall of the sorting chamber 21. An installation hole is opened at one end of the L-shaped frame 501. A rotating cylinder 502 is rotatably connected to the inner wall of the installation hole. The bottom end of the connecting rod 606 is inserted into the rotating cylinder 502. A threaded groove 508 is opened on the inner wall of the rotating cylinder 502. The outer wall of the threaded column 22 is screwed with the inner wall of the threaded groove 508. A transmission shaft 504 and a stirring shaft 506 are respectively rotatably connected to the top and bottom of the inner wall of the L-shaped frame 501. Transmission wheels are installed on the outer walls of the transmission shaft 504 and the stirring shaft 506, and a transmission belt 505 is connected between the two transmission wheels. Bevel gears 503 are installed at one end of the transmission shaft 504 and on the outer wall of the rotating cylinder 502, and the two bevel gears 503 are meshed with each other. A stirring blade 507 is installed on one side of the outer wall of the stirring shaft 506, and the stirring blade 507 is close to the metering frame 23. When the threaded column 22 rises and falls with the lifting assembly 6, due to the screwing connection between the threaded column 22 and the threaded groove 508, the rotating cylinder 502 will rotate, and with the meshing action of the two bevel gears 503, it drives the transmission shaft 504 to rotate, so as to drive the stirring shaft 506 and the stirring blade 507 to rotate under the action of the transmission belt 505, which is convenient for stirring the food additive raw materials in the sorting chamber 21, preventing the additive raw materials from piling up and blocking the inlet of the guide cylinder 24, so that the food additive raw materials can enter the metering frame 23 better.

[0058] Specifically, support seats 19 are fixed on both sides of the top of the frame 1, and rotating shafts 20 are rotatably arranged on the support seats 19. The centralized box 3 is fixedly installed between one ends of the two rotating shafts 20. Universal wheels are installed at the four corners of the bottom of the frame 1. An installation base 7 is installed on the outer wall of the feeding hopper 9, and a first hydraulic cylinder 12 is rotatably arranged between the bottom of the installation base 7 and one end of the top of the frame 1, as Figure 1 and Figure 2As shown, the angle between the feeding cylinder 9 and the frame 1 can be changed by the first hydraulic cylinder 12. When it is necessary to adjust the feeding height or adapt to different production layouts, the first hydraulic cylinder 12 can be operated to make the feeding cylinder 9 rotate around its rotation point with the frame 1 to reach an appropriate inclination angle.

[0059] Specifically, inclined seats 17 are installed on the bottom inner walls of the classification chambers 21, and arc-shaped grooves are provided at one ends of the inclined seats 17. The four peripheries of the bottom of the centralized box 3 are designed to be inclined surfaces, as Figure 1 、 Figure 2 、 Figure 4 and Figure 5 shown, which is beneficial to the complete sliding of materials, avoids material residues, and ensures the accuracy and purity of material transportation.

[0060] Specifically, a controller 2 is installed on one side of the frame 1, and the controller 2 is electrically connected to the drive motor 16. The first hydraulic cylinder 12 and the second hydraulic cylinder 602 are connected to a hydraulic system, as Figure 1 shown, realizing the automatic operation and control of the equipment, improving the stability and reliability of the production process, reducing manual operations, and lowering the labor intensity and human errors.

[0061] Embodiment 2:

[0062] Please refer to Figure 1 、 Figure 2 、 Figure 9 and Figure 10, in this embodiment compared with the first embodiment, the air-sweeping assembly 8 includes a hollow channel 806 formed in the spiral shaft 13, and an air hood 803 is installed at the top end of the hollow channel 806. An air inlet pipe 802 is rotatably connected to the inner wall of the air hood 803. An air pump 801 is installed on the other side of the top of the mounting seat 7. The controller 2 is electrically connected to the air pump 801, and the exhaust end of the air pump 801 is fixedly connected to the air inlet pipe 802. A plurality of nozzles 804 are installed at the top and bottom of the hollow channel 806, and the positions of the nozzles 804 are staggered with the blade positions of the variable-pitch auger blades 14. The inner wall of the nozzle 804 is designed in a T shape. A plug 807 is attached to the inner wall of the nozzle 804. First springs 808 are installed at the top of the plug 807 and the top inner wall of the nozzle 804. The nozzle 804 is provided with equally spaced air holes 805. The plug 807 seals the air holes 805. With the above-mentioned air-sweeping assembly 8, the air pump 801 is used to transport air through the air inlet pipe 802 to the air hood 803, and then into the hollow channel 806 on the spiral shaft 13. The nozzles 804 on the hollow channel 806 eject the air. Since the positions of the nozzles 804 are staggered with the blade positions of the variable-pitch auger blades 14, the ejected air can blow the food additive raw materials attached to the variable-pitch auger blades 14, preventing the additive raw materials from sticking to the blades and ensuring smooth feeding. Moreover, the plug 807 on the inner wall of the nozzle 804 seals the air holes 805 under the action of the first spring 808. When there is sufficient air pressure, the plug 807 is pushed open and the air is ejected from the air holes 805.

[0063] In summary, by means of the above technical solutions of the present invention, the working principle of the present invention is as follows: The partition plate 18 is used to divide the interior of the aggregate bin 4 into a plurality of classification chambers 21 of the same volume, which can store different types or different specifications of food additive raw materials respectively. The inclined seat 17 at the bottom of the classification chamber 21 makes it easier for the additive raw materials to slide towards the metering frame 23. The bottom of the centralized bin 3 is designed with an inclined surface, which is convenient for the additive raw materials to flow centrally towards the feed pipe 15 and enter the feeding cylinder 9 for feeding.

[0064] By the telescoping of the first hydraulic cylinder 12, the angle between the feeding cylinder 9 and the frame 1 can be changed. When it is necessary to adjust the feeding height or adapt to different production layouts, the first hydraulic cylinder 12 can be operated to make the feeding cylinder 9 rotate around its rotation point with the frame 1 to reach a suitable inclination angle.

[0065] During feeding, the second hydraulic cylinder 602 in the lifting assembly 6 is used to push the lifting frame 603 up and down. The lifting frame 603 drives the sleeve 1101 and the lifting disc 605 to lift and lower synchronously through the connecting frame 604. The lifting disc 605 is connected to the threaded column 22 on the metering frame 23 through the connecting rod 606. Thus, the lifting control of the metering frame 23 and the sealing assembly 11 is realized, and the opening size of the material guiding cylinder 24 is controlled, so as to realize the quantitative feeding of the food additive raw materials entering the centralized box 3 from the classification chamber 21. Meanwhile, under the action of the lifting assembly 6, the height of the sealing assembly 11 is reduced, so that the sealing assembly 11 is closely attached to the feeding port of the food additive production equipment, and the elastic force is provided by the second spring 1103. When an external force acts on the sealing cover 1102, the ball sleeve 1104 can move within a certain range, so that the sealing cover 1102 can better fit around the discharge pipe 10, which can ensure the sealing effect at the discharge pipe 10, prevent material leakage and entry of external impurities. Then, the driving motor 16 is used to drive the spiral shaft 13 to rotate, and the variable pitch auger blades 14 on the spiral shaft 13 push the additive raw materials in the feeding cylinder 9 upward and finally discharge from the discharge pipe 10.

[0066] In the lower anti-blocking assembly 5, when the threaded column 22 rises and falls with the lifting assembly 6, since the threaded column 22 is screwed with the thread groove 508 on the inner wall of the rotating cylinder 502, the rotating cylinder 502 will rotate. The rotation of the rotating cylinder 502 drives the transmission shaft 504 to rotate through the bevel gear 503. The transmission shaft 504 drives the stirring shaft 506 and the stirring blades 507 to rotate through the transmission belt 505. The food additive raw materials in the classification chamber 21 are stirred by the stirring blades 507 to prevent the additive raw materials from piling up and blocking the inlet of the material guiding cylinder 24, so that the food additive raw materials can better enter the metering frame 23.

[0067] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A screw feeding device for food additive production, characterized in that, Including: Frame (1); Centralized box (3), the centralized box (3) is rotatably arranged on one side of the top of the frame (1), and a feed pipe (15) is fixed to the bottom of the centralized box (3); Feeding cylinder (9), the feeding cylinder (9) is installed obliquely at the bottom end of the feed pipe (15); Air sweeping assembly (8), the air sweeping assembly (8) is arranged at the top end of the feeding cylinder (9); Discharge pipe (10), the discharge pipe (10) is installed on the feeding cylinder (9), and a sealing assembly (11) is arranged on the outer wall of the discharge pipe (10); Aggregate box (4), the aggregate box (4) is installed on the top of the centralized box (3), and a partition plate (18) is installed on the inner wall of the aggregate box (4), the partition plate (18) divides the interior of the aggregate box (4) into multiple classification chambers (21) of the same volume, and a guide cylinder (24) extending into the centralized box (3) is fixed to one end of the bottom of each classification chamber (21); Quantitative feeding assembly, the quantitative feeding assembly is attached inside the guide cylinder (24); Lifting assembly (6), the lifting assembly (6) is installed between the quantitative feeding assembly and the sealing assembly (11); Anti-blocking assembly (5), the anti-blocking assembly (5) is arranged inside the classification chamber (21).

2. The screw feeding device for food additive production according to claim 1, characterized in that, A spiral shaft (13) is rotatably arranged on the inner wall of the feeding cylinder (9), a driving motor (16) for driving the spiral shaft (13) to rotate is installed at the bottom end of the feeding cylinder (9), and a variable pitch auger blade (14) attached to the inner wall of the feeding cylinder (9) is installed on the outer wall of the spiral shaft (13).

3. The screw feeding device for food additive production according to claim 2, characterized in that, Support seats (19) are fixed to both sides of the top of the frame (1), and a rotating shaft (20) is rotatably arranged on each support seat (19), the centralized box (3) is fixedly installed between one ends of the two rotating shafts (20), universal wheels are installed at the four corners of the bottom of the frame (1), a mounting seat (7) is installed on the outer wall of the feeding cylinder (9), and a first hydraulic cylinder (12) is rotatably arranged between the bottom of the mounting seat (7) and one end of the top of the frame (1).

4. A screw feeding device for food additive production according to claim 3, characterized in that, The quantitative feeding assembly includes a quantitative frame (23) attached to the inner wall of the guide cylinder (24), a threaded column (22) is fixed in the middle of the top of the quantitative frame (23), the height of the quantitative frame (23) is less than the height of the guide cylinder (24), the quantitative frame (23) includes two upper and lower sealing disks (2301), and a plurality of connecting columns (2302) are fixed between the two upper and lower sealing disks (2301), and a conical seat (2303) is fixed to the top of the lower sealing disk (2301).

5. The screw feeding device for food additive production according to claim 4, characterized in that, The sealing assembly (11) includes a sleeve (1101) sleeved on the outer wall of the discharge pipe (10), and a ball sleeve (1104) is sleeved on the bottom of the outer wall of the sleeve (1101). A sealing cover (1102) is movably attached to the outer wall of the ball sleeve (1104). A connecting groove (1105) is formed in the inner wall of the ball sleeve (1104), and a fixing ring (1106) inserted into the connecting groove (1105) is fixed to the outer wall of the sleeve (1101). A second spring (1103) is installed between the bottom of the fixing ring (1106) and the bottom of the connecting groove (1105).

6. The screw feeding device for food additive production according to claim 5, characterized in that, The lifting assembly (6) includes an L-shaped plate (601) installed on one side of the top of the mounting base (7), and a second hydraulic cylinder (602) is installed on the top of the L-shaped plate (601). A lifting frame (603) is installed at the piston end of the second hydraulic cylinder (602). A connecting frame (604) is fixed to the bottom of the lifting frame (603). One end of the connecting frame (604) is installed on the outer wall of the sleeve (1101), and a lifting disc (605) is fixed to the other end of the connecting frame (604). Connecting rods (606) are fixed between the tops of the threaded columns (22) and the bottom of the lifting disc (605).

7. The screw feeding device for food additive production according to claim 6, characterized in that, The anti-blocking assembly (5) includes an L-shaped frame (501) installed on the inner wall of the classification chamber (21). An installation hole is formed at one end of the L-shaped frame (501), and a rotating cylinder (502) is rotatably connected to the inner wall of the installation hole. The bottom end of the connecting rod (606) is inserted into the rotating cylinder (502). A threaded groove (508) is formed in the inner wall of the rotating cylinder (502), and the outer wall of the threaded column (22) is screwed with the inner wall of the threaded groove (508). A transmission shaft (504) and a stirring shaft (506) are respectively rotatably connected to the top and bottom of the inner wall of the L-shaped frame (501). Transmission wheels are installed on the outer walls of the transmission shaft (504) and the stirring shaft (506), and a transmission belt (505) is connected between the two transmission wheels. Bevel gears (503) are installed on one end of the transmission shaft (504) and the outer wall of the rotating cylinder (502), and the two bevel gears (503) are meshed with each other. Stirring blades (507) are installed on one side of the outer wall of the stirring shaft (506), and the stirring blades (507) are close to the metering frame (23).

8. The screw feeding device for food additive production according to claim 1, characterized in that, Slant seats (17) are installed on the bottom inner walls of the classification chamber (21), and arc-shaped grooves are provided at one ends of the slant seats (17). The four surrounding bottoms of the centralized box (3) are designed to be inclined surfaces.

9. The screw feeding device for food additive production according to claim 6, characterized in that, The air-sweeping assembly (8) includes a hollow channel (806) formed in the spiral shaft (13), and an air hood (803) is installed at the top end of the hollow channel (806). An air inlet pipe (802) is rotatably connected to the inner wall of the air hood (803). An air pump (801) is installed on the other side of the top of the mounting seat (7), and the exhaust end of the air pump (801) is fixedly connected to the air inlet pipe (802). A plurality of nozzles (804) are installed at both the top and the bottom of the hollow channel (806), and the positions of the nozzles (804) are staggered with the blade positions of the variable-pitch auger blades (14). The inner wall of the nozzle (804) is designed in a T shape, and a plugging head (807) is attached to the inner wall of the nozzle (804). First springs (808) are installed on both the top of the plugging head (807) and the inner wall of the top of the nozzle (804). The nozzle (804) is provided with air injection holes (805) distributed at equal intervals, and the plugging head (807) seals the air injection holes (805).

10. The screw feeding device for food additive production according to claim 9, characterized in that, A controller (2) is installed on one side of the frame (1), and the controller (2) is electrically connected to the air pump (801) and the drive motor (16). The first hydraulic cylinder (12) and the second hydraulic cylinder (602) are connected to a hydraulic system.

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