Composite food extrusion forming device and method

Abstract

The invention discloses a composite food extrusion forming device and method, and relates to the technical field of food processing.The extrusion forming device comprises a mixing mechanism, a material extruding mechanism and a rotary cutting mechanism, and the rotary cutting mechanism is arranged on the discharging side of a material extruding mold in the material extruding mechanism; a rotary cutting assembly in the rotary cutting mechanism comprises a first rotary cutter, a second rotary cutter, a rotary cutting driving assembly and a blowing assembly, the second rotary cutter is arranged at the output end of the rotary cutting driving assembly through a telescopic piece, the first rotary cutter is arranged at the output end of the rotary cutting driving assembly, and the first rotary cutter and the second rotary cutter synchronously rotate in the radial direction of the extrusion die. The second rotary cutter is located on the outer side of the first rotary cutter, the blowing assembly is arranged on the front blade face of the first rotary cutter, and when the telescopic piece drives the second rotary cutter to move to the maximum displacement in the direction close to the axis of the extrusion die, the rear blade face of the first rotary cutter is attached to the front blade face of the second rotary cutter; according to the extrusion forming device, efficient cleaning of the rotary cutter is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of food processing, and in particular relates to a composite food extrusion molding device and method. Background Art

[0002] Composite food refers to food made from two or more different kinds of raw materials through a specific processing technology (such as composite food extrusion molding technology). It can combine the nutrition and flavor of multiple ingredients. For example, puffed snacks are often mixed with grains and beans, and breakfast cereals may be paired with dried fruits and vegetables, etc., meeting people's demand for balanced nutrition and diverse tastes. For example, composite nutritious rice is a mixture of raw materials such as highland barley flour, konjac flour (as a binder), and whole grain flour in a certain proportion. Some juice squeezed from tangerines and oranges may even be added as a mixing agent. Under pre-set process parameters, it is extruded into rice grains through a mold and then dried. It has similar cooking properties to natural rice, but has a lower GI (Glycemic Index) value, a higher sense of satiety, and more comprehensive nutrition.

[0003] In the existing composite food extrusion molding equipment, when in use, the rice grains just extruded from the screw extrusion mechanism are in a gelatinized state, which has a certain viscosity and humidity. Therefore, during the rotary cutting process, the composite food in the form of rice grains is easily adhered to the rotary cutter, affecting the subsequent rotary cutting operation of the rotary cutter. If manual cleaning is used, the rotary cutter needs to be disassembled for cleaning, which reduces work efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a composite food extrusion molding device and method with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] In a first aspect, the present invention provides a composite food extrusion molding device, comprising:

[0007] A mixing mechanism, used for mixing powdered raw materials and liquid raw materials;

[0008] Extrusion mechanism, used for extruding the materials mixed by the mixing mechanism;

[0009] The peeling mechanism is arranged on the discharge side of the extrusion die in the extrusion mechanism, and the peeling assembly in the peeling mechanism includes a first peeling blade, a second peeling blade, a peeling drive assembly and a purge assembly. The second peeling blade is arranged at the output end of the peeling drive assembly through a telescopic member, and the first peeling blade is arranged at the output end of the peeling drive assembly. The peeling drive assembly is used to drive the first peeling blade and the second peeling blade to rotate at the same angular velocity around the axis of the extrusion die, wherein, along the radial direction of the extrusion die, the second peeling blade is located far away from the first peeling blade. On one side away from the axis of the extrusion die and along the rotation direction of the first rotary cutter, the rear edge of the first rotary cutter is located in front of the front edge of the second rotary cutter, the purge component is arranged on the front edge of the first rotary cutter, and the purge component is used to purge and remove granular food adhered to the front edge of the first rotary cutter. The telescopic part is used to drive the second rotary cutter to reciprocate along the radial direction of the extrusion die. When the telescopic part drives the second rotary cutter to move toward the axis of the extrusion die to the maximum displacement, the rear edge of the first rotary cutter is in contact with the front edge of the second rotary cutter.

[0010] As a further optimization scheme of the present invention, the mixing mechanism includes a mixing box and a mixing and stirring component, the mixing and stirring component is arranged in the mixing box, the upper end of the mixing box is provided with a feeding mechanism, the feeding mechanism includes a liquid feed pipe, a powder feed pipe and a pre-stirring component, the liquid feed pipe and the powder feed pipe are respectively connected to the mixing box, wherein the powder feed pipe is provided with a pre-stirring component, the pre-stirring component is used to pre-mix and stir a variety of powder raw materials fed into the powder feed pipe, and the mixing and stirring component is used to mix the liquid raw material and the multiple powder raw materials;

[0011] Among them, a discharge pipe is provided at the lower end of the mixing box, the discharge pipe is connected to the mixing box, and the discharge pipe is used to discharge the evenly mixed materials in the mixing box to the outside of the mixing box.

[0012] As a further optimization scheme of the present invention, the extrusion mechanism includes an extrusion drive, an extrusion tube and a screw. The extrusion tube is arranged at the lower position of the mixing box. A receiving hopper is provided on the side of the extrusion tube, and the receiving hopper is used to receive the material discharged from the discharge pipe. An extrusion die is fixedly provided at the output end of the extrusion tube, and a screw is provided in the extrusion tube. The input end of the screw is transmission-connected to an extrusion drive, and the extrusion drive is used to drive the screw to spirally convey the material to the end of the extrusion die.

[0013] As a further optimization scheme of the present invention, the rotary cutting drive assembly includes a motor, a main shaft and a base, the extrusion die is embedded in the discharge box, and the extrusion end of the extrusion die is located in the inner cavity of the discharge box, the output end of the motor is transmission-connected to the main shaft, and one end of the main shaft located in the inner cavity of the discharge box is fixedly connected to the base, the first rotary cutter is fixedly set on the base, the second rotary cutter is fixedly connected to the second knife seat, the fixed end of the telescopic part is set on the base, and the telescopic end of the telescopic part is fixedly set on the second knife seat, wherein the axis center line of the main shaft is consistent with the axis center line of the extrusion die.

[0014] As a further optimization scheme of the present invention, a first blade holder is provided behind the first rotary cutter along the rotation direction of the first rotary cutter, and the first blade holder is fixedly provided on the base. The second rotary cutter is located between the first rotary cutter and the first blade holder, and the rear edge surface of the second rotary cutter is in contact with the first blade holder.

[0015] As a further optimization scheme of the present invention, the purge assembly includes a fan, a main air duct, a first air duct and a shift assembly, the air outlet of the fan is connected to the input end of the main air duct, the output end of the main air duct is connected to the connecting pipe through an internal channel opened in the main shaft, the output end of the connecting pipe is connected to the first air duct, a first blowing hole is opened on the first air duct, the blowing direction of the first blowing hole is set toward the front edge surface of the first rotary cutter, the first air duct is slidably connected in the first knife holder, the output end of the shift assembly is transmission-connected to the first air duct, and the shift assembly is used to drive the first air duct to switch between a position extending outside the first knife holder and a position received in the first knife holder.

[0016] As a further optimization scheme of the present invention, the shift assembly includes a spring, a guide rod and an abutment block. One end of the first air duct located in the first knife seat is fixedly connected to the guide rod, the guide rod passes through the first knife seat and is slidably connected to the first knife seat. A spring is sleeved on the guide rod, and an abutment block is fixedly provided on the second knife seat. An arc convex surface is provided at one end of the first air duct adjacent to the abutment block, and the abutment inclined surface of the abutment block abuts and cooperates with the arc convex surface of the first air duct.

[0017] As a further optimization solution of the present invention, a second air duct is provided on the outside of the discharge box, the input end of the second air duct is connected to the output end of the main air duct, and the output end of the second air duct is connected to the inner cavity of the discharge box through a second blowing hole provided on the side wall of the discharge box, wherein the plurality of second blowing holes located above the axis of the extrusion die are distributed circumferentially around the extrusion die, while the plurality of second blowing holes located below the axis of the extrusion die are distributed in an orderly manner in the vertical direction;

[0018] An arc plate is fixedly provided on the top of the inner cavity of the discharge box, and the arc plate is located on the side of the second blowing hole away from the extrusion die. Along the direction of the main shaft away from the extrusion die, the distance between the inner arc surface of the arc plate and the axis center line of the main shaft gradually decreases, wherein the arc plate is located above the axis center line of the extrusion die.

[0019] As a further optimization scheme of the present invention, a third blowing hole is provided in the arc plate, and the third blowing hole is arranged at an angle. A third air duct is provided on the outside of the discharge box, and the input end of the third air duct is connected with the output end of the main air duct, and the third air duct is connected with the inner cavity of the discharge box through the third blowing hole. The third blowing hole is arranged at an angle, and the aperture of the multiple third blowing holes gradually increases along the direction of the third blowing hole away from the second blowing hole, and the angle between the hole axis centerline of the multiple third blowing holes and the axis centerline of the main shaft gradually increases.

[0020] In a second aspect, the present invention further provides a composite food extrusion molding method, using the composite food extrusion molding device described above, comprising the following steps:

[0021] Put various powder raw materials into the powder feeding pipe and perform preliminary mixing through the pre-mixing component;

[0022] The preliminarily mixed powder and liquid raw materials in the mixing box are mixed evenly and transported to the extrusion pipe through the discharge pipe;

[0023] The screw rotates to spirally convey the material to the end of the extrusion die to extrude the initially formed food;

[0024] The preliminarily formed food is peeled by the first peeling knife and the second peeling knife to form a granular composite food, which is then discharged to the conveyor belt through the discharge box;

[0025] The granular composite food peeled off by the first rotary cutter is blown away by the first blowing hole, and the granular composite food peeled off tends to fall toward the discharge side of the discharge box under the blowing of the second and third blowing holes.

[0026] The present invention has at least the following beneficial effects: a composite food extrusion molding device and method disclosed in the present invention, the composite food extrusion molding device comprises a mixing mechanism, an extrusion mechanism and a rotary cutting mechanism, the wet rice flour dough is extruded out of the extrusion die through the extrusion die in the extrusion mechanism, the rotary cutting assembly in the rotary cutting mechanism comprises a first rotary cutting blade, a second rotary cutting blade, a rotary cutting drive assembly and a purge assembly, the extrusion die is partitioned and rotary cut by the first rotary cutting blade and the second rotary cutting blade, the front edge surface of the first rotary cutting blade during the rotary cutting process is cleaned by the purge assembly Blowing is used to blow away the rice grains that have been peeled off, thereby preventing the rice grains from sticking to the first peeling blade. As for the second peeling blade, since the linear speed of its blade is greater than that of the blade of the first peeling blade, after a certain amount of rice-shaped composite food has been processed, the second peeling blade is driven by the telescopic member to move to the maximum displacement in the direction close to the axis of the extrusion die. With the help of the contact effect between the rear edge of the first peeling blade and the front edge of the second peeling blade, the front edge of the second peeling blade is scraped and cleaned, and the peeling blade can be cleaned without disassembling the equipment.

[0027] Moreover, when the rice grains cut by the rotary cutter are thrown out, the air wall formed by the second blowing holes arranged on the outer periphery of the extrusion die effectively prevents the rice grains from being thrown onto the inner cavity wall of the discharge box, and the blowing direction of the second blowing holes is horizontal, and an arc plate is fixedly arranged on the top of the inner cavity of the discharge box, and a third blowing hole is opened in the arc plate. The third blowing hole is inclined, and the angle between the hole axis of the plurality of third blowing holes and the axis of the main shaft gradually increases, forming an air flow trajectory toward the front and lower side of the second blowing hole, so that the rice grains intercepted by the second blowing holes continue to be blown by the blowing force formed by the air flow trajectory, prompting the rice grains to be blown down in the falling direction of the material, thereby ensuring the dropping effect of the rice grains;

[0028] In addition, as the third blowing hole moves away from the second blowing hole, the apertures of the multiple third blowing holes gradually increase, which means that the air output of the third blowing hole gradually increases, compensating for the attenuation of the air flow as the distance from the second blowing hole increases, and ensuring that there is sufficient air volume along the entire path of the arc-shaped trajectory of the arc plate from the second blowing hole to cause the rice grains to fall to the lower left side. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the side of the present invention;

[0031] Figure 3 It is a partial structural schematic diagram of the rotary cutting mechanism of the present invention;

[0032] Figure 4 This invention Figure 3A schematic diagram of a front cross-sectional structure;

[0033] Figure 5 It is a schematic diagram of the partial structure of the extrusion die, the discharge box and the third air duct of the present invention;

[0034] Figure 6 It is a partial structural schematic diagram of the rotary cutting assembly of the present invention;

[0035] Figure 7 It is a partial cross-sectional structural schematic diagram of the rotary cutting assembly of the present invention;

[0036] Figure 8 It is a partial cross-sectional structural schematic diagram of the second rotary cutter in the rotary cutter assembly of the present invention when it is located in the cleaning position;

[0037] Figure 9 This is another perspective schematic diagram of the three-dimensional structure of the rotary cutting component of the present invention.

[0038] Figure: 1. Feeding mechanism; 11. Liquid feed pipe; 12. Powder feed pipe; 13. Pre-mixing assembly; 2. Mixing mechanism; 21. Mixing box; 22. Mixing and stirring assembly; 23. Discharge pipe; 3. Extrusion mechanism; 31. Extrusion drive element; 32. Feed hopper; 33. Extrusion pipe; 34. Screw; 35. Extrusion die; 4. Peeling mechanism; 41. Fan; 42. Main air duct; 43. Secondary air duct; 431. Secondary air hole; 44. Third air duct ; 45. Discharge box; 46. Motor; 461. Spindle; 462. Base; 47. Arc plate; 471. Third blowing hole; 101. Peeling assembly; 102. First peeling knife; 103. Side scraper blade; 104. Second peeling knife; 105. Second knife holder; 106. Telescopic part; 107. Abutment block; 108. First air duct; 109. Connecting pipe; 110. First knife holder; 111. First blowing hole; 112. Spring; 113. Guide rod. DETAILED DESCRIPTION

[0039] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0040] In one embodiment, if Figure 1 、 Figure 2 、 Figure 4 and Figure 6 As shown, the present invention provides a composite food extrusion molding device, comprising:

[0041] Mixing mechanism 2, used for mixing powder raw materials and liquid raw materials;

[0042] Extrusion mechanism 3, used for extruding the material mixed by mixing mechanism 2;

[0043] The peeling mechanism 4 is arranged on the discharge side of the extrusion die 35 in the extrusion mechanism 3. The peeling assembly 101 in the peeling mechanism 4 includes a first peeling blade 102, a second peeling blade 104, a peeling drive assembly and a purge assembly. The second peeling blade 104 is arranged at the output end of the peeling drive assembly through a telescopic member 106. The first peeling blade 102 is arranged at the output end of the peeling drive assembly. The peeling drive assembly is used to drive the first peeling blade 102 and the second peeling blade 104 to rotate at the same angular velocity around the axis of the extrusion die 35, wherein, along the radial direction of the extrusion die 35, the second peeling blade 104 is located far away from the first peeling blade 102. On one side of the axis of the extrusion die 35 and along the rotation direction of the first rotary cutter 102, the rear edge of the first rotary cutter 102 is located in front of the front edge of the second rotary cutter 104, and the purge component is arranged on the front edge of the first rotary cutter 102. The purge component is used to purge and remove granular food adhered to the front edge of the first rotary cutter 102. The telescopic member 106 is used to drive the second rotary cutter 104 to reciprocate along the radial direction of the extrusion die 35. When the telescopic member 106 drives the second rotary cutter 104 to move toward the axis of the extrusion die 35 to the maximum displacement, the rear edge of the first rotary cutter 102 is in contact with the front edge of the second rotary cutter 104.

[0044] It should be noted that the conventional rotary cutter is integrally formed, so that the linear speed of the outer blade of the rotary cutter is greater than the linear speed of the inner blade. When the rotary cutter contacts the extruded rice grains, the relative movement speed of the outer blade and the material is faster, and the instantaneous extrusion effect on the material is more intense, which easily causes the gelatinized rice grains to adhere to the blade and form adhesion. Therefore, in the above embodiment, the rotary cutter is divided into a first rotary cutter 102 and a second rotary cutter 104. Since the first rotary cutter 102 and the second rotary cutter 104 rotate at the same angular velocity around the axis of the extrusion die 35, the linear speed of the blade of the first rotary cutter 102 is less than the linear speed of the blade of the second rotary cutter 104, so that The second rotary cutter 104 is more likely to adhere to rice grains. Therefore, through the above embodiment, during the rotary cutting process, the front edge of the first rotary cutter 102 is purged by means of the blowing assembly, thereby effectively preventing the first rotary cutter 102 from adhering to the rice grains. After the rotary cutting operation is completed, the second rotary cutter 104 is driven by the telescopic member 106 to move along the radial direction of the extrusion die 35 toward the axial center line of the extrusion die 35. The rear edge of the first rotary cutter 102 is fitted with the front edge of the second rotary cutter 104, so that the first rotary cutter 102 can scrape and clean the rice grains adhering to the front edge of the second rotary cutter 104. That is, the split structure of the rotary cutter and the differentiated cleaning of the two rotary cutters are realized. Figure 6As shown, a side scraper blade 103 is provided at the side end of the first rotary cutter 102 to facilitate scraping and cleaning the front edge of the second rotary cutter 104 without disassembling the rotary cutter, simplifying cleaning and reducing equipment maintenance costs.

[0045] It should be noted that if Figure 1 and Figure 2 As shown, the mixing mechanism 2 includes a mixing box 21 and a mixing and stirring component 22, the mixing and stirring component 22 is arranged in the mixing box 21, and the upper end of the mixing box 21 is provided with a feeding mechanism 1, the feeding mechanism 1 includes a liquid feed pipe 11, a powder feed pipe 12 and a pre-stirring component 13, the liquid feed pipe 11 and the powder feed pipe 12 are respectively communicated with the mixing box 21, wherein the powder feed pipe 12 is provided with a pre-stirring component 13, the pre-stirring component 13 is used to pre-mix and stir a variety of powder raw materials fed into the powder feed pipe 12, and the mixing and stirring component 22 is used to mix the liquid raw material (such as water, and vegetable and fruit juice can also be added to improve the color of the composite food) and a variety of powder raw materials (such as highland barley flour, konjac flour, whole grain flour, etc.) to form a moist rice flour dough;

[0046] A discharge pipe 23 is provided at the lower end of the mixing box 21 . The discharge pipe 23 is in communication with the mixing box 21 . The discharge pipe 23 is used to discharge the evenly mixed materials in the mixing box 21 to outside the mixing box 21 .

[0047] For example, Figure 2 As shown, the pre-stirring assembly 13 and the mixing and stirring assembly 22 respectively include a stirring shaft and a stirring blade, and the stirring shafts are both driven by a pulley transmission structure, which is not limited here.

[0048] For example, see Figure 1 and Figure 2 The extrusion mechanism 3 includes an extrusion drive 31, an extrusion tube 33 and a screw 34. The extrusion tube 33 is arranged at the lower position of the mixing box 21. A receiving hopper 32 is provided on the side of the extrusion tube 33. The receiving hopper 32 is used to receive the material discharged from the discharge tube 23. An extrusion die 35 is fixedly provided at the output end of the extrusion tube 33. A screw 34 is provided in the extrusion tube 33. The input end of the screw 34 is transmission-connected to the extrusion drive 31. The extrusion drive 31 is used to drive the screw 34 to spirally convey the material to the end of the extrusion die 35.

[0049] It should be noted that if Figure 2As shown, the extrusion drive member 31 is a pulley-driven structure that drives the screw 34 to rotate. The extrusion tube 33 is in a high-temperature, high-pressure environment, which causes the starch in the rice flour dough to gelatinize and form a viscous structure. Thus, under the constraint of the extrusion die 35 having a bionic natural rice shape, the rice flour dough is extruded and, under the rotary cutting action of the first rotary cutter 102 and the second rotary cutter 104, a regenerated rice embryo having a rice grain shape is initially formed. The sudden extrusion of the rice flour dough from the high-temperature, high-pressure environment into the external environment creates a dramatic pressure difference that causes the moisture inside the material to evaporate rapidly, forming tiny pores. This allows the extruded rice grain strips to expand appropriately while maintaining their basic shape, resulting in an appearance more similar to the plump shape of natural rice grains. Therefore, the regenerated rice embryo at this point is not a completely raw material and requires subsequent cooking, drying, and screening processes, which will not be described in detail here.

[0050] For example, see Figure 3 、 Figure 4 、 Figure 6 The rotary cutting drive assembly includes a motor 46, a spindle 461, and a base 462. The extrusion die 35 is embedded in the discharge box 45, and the extrusion end of the extrusion die 35 is located in the inner cavity of the discharge box 45. The output end of the motor 46 is transmission-connected to the spindle 461. One end of the spindle 461 located in the inner cavity of the discharge box 45 is fixedly connected to the base 462. The first rotary cutter 102 is fixedly mounted on the base 462, and the second rotary cutter 104 is fixedly connected to the second cutter holder 105. The fixed end of the telescopic member 106 is mounted on the base 462, and the telescopic end of the telescopic member 106 is fixedly mounted on the second cutter holder 105. The axis of the spindle 461 is aligned with the axis of the extrusion die 35. The motor 46 drives the base 462 to rotate via the spindle 461, thereby achieving synchronous rotation of the first rotary cutter 102 and the second rotary cutter 104 with the base 462.

[0051] Continue reading Figure 7 , along the rotation direction of the first rotary cutter 102, that is, Figure 7 As shown on the left side, a first blade holder 110 is disposed behind the first peeling cutter 102. The first blade holder 110 is fixedly mounted on the base 462. The second peeling cutter 104 is positioned between the first peeling cutter 102 and the first blade holder 110, with the trailing edge of the second peeling cutter 104 in contact with the first blade holder 110. Thus, when the second peeling cutter 104 is in the peeling position, the auxiliary support provided by the first blade holder 110 ensures the peeling stability of the second peeling cutter 104. Furthermore, when the second peeling cutter 104 is displaced, the first blade holder 110 guides the second peeling cutter 104.

[0052] For example, see Figure 3 、 Figure 6 and Figure 7The purge assembly includes a fan 41, a main air duct 42, a first air duct 108 and a shift assembly. The air outlet of the fan 41 is connected to the input end of the main air duct 42, and the output end of the main air duct 42 is connected to the connecting pipe 109 through an internal channel opened in the main shaft 461. The output end of the connecting pipe 109 is connected to the first air duct 108. A first blowing hole 111 is opened on the first air duct 108. The blowing direction of the first blowing hole 111 is set toward the front edge surface of the first rotary cutter 102. The first air duct 108 is slidably connected to the first knife seat 110. The output end of the shift assembly is transmission-connected to the first air duct 108. The shift assembly is used to drive the first air duct 108 to switch between a position extending outside the first knife seat 110 and a position retracted into the first knife seat 110. Therefore, when the first air duct 108 is extended to a position outside the first blade holder 110, the first blowing hole 111 is used to blow the front edge of the first rotary cutter 102, so that the rice grains cut by the first rotary cutter 102 are blown off. In addition, the air wall formed on the first rotary cutter 102 by the first blowing hole 111 effectively prevents the rice grains from passing over the upper end of the first rotary cutter 102 under the action of centrifugation and falling into the area between the first rotary cutter 102 and the first blade holder 110.

[0053] Among them, Figure 7 、 Figure 8 and Figure 9 As shown, the shift assembly includes a spring 112, a guide rod 113, and an abutment block 107. One end of the first air duct 108 located within the first blade holder 110 is fixedly connected to the guide rod 113, which passes through the first blade holder 110 and is slidably connected thereto. The spring 112 is sleeved on the guide rod 113. The second blade holder 105 is fixedly provided with the abutment block 107. The first air duct 108 has an arcuate convex surface at one end adjacent to the abutment block 107. The abutment slope of the abutment block 107 abuts and cooperates with the arcuate convex surface of the first air duct 108. Therefore, when the second rotary cutter 104 needs to be cleaned, the second blade holder 105, driven by the telescopic member 106, abuts the arcuate convex surface of the first air duct 108 via the abutment block 107, causing the first air duct 108 to compress the spring 112 and retract into the first blade holder 110.

[0054] It should be noted that if Figure 8 As shown, the first air duct 108 has not completely retracted into the first tool holder 110. Due to the connection between the first air duct 108 and the connecting pipe 109, a certain distance of the first air duct 108 needs to be reserved outside the first tool holder 110 so that it can be smoothly connected with the connecting pipe 109.

[0055] Continue reading Figure 3 、 Figure 4 and Figure 5A second air duct 43 is provided on the outside of the discharge box 45. The input end of the second air duct 43 is connected to the output end of the main air duct 42. The output end of the second air duct 43 is connected to the inner cavity of the discharge box 45 through a second blowing hole 431 provided on the side wall of the discharge box 45. The plurality of second blowing holes 431 located above the axis of the extrusion die 35 are distributed circumferentially around the extrusion die 35. The blowing direction of the second blowing holes 431 is horizontal, while the plurality of second blowing holes 431 located below the axis of the extrusion die 35 are distributed in an orderly manner in the vertical direction.

[0056] An arc plate 47 is fixedly provided on the top of the inner cavity of the discharge box 45, and the arc plate 47 is located on the side of the second blowing hole 431 away from the extrusion mold 35. Along the direction of the main shaft 461 away from the extrusion mold 35, the distance between the inner arc surface of the arc plate 47 and the axis center line of the main shaft 461 gradually decreases, wherein the arc plate 47 is located above the axis center line of the extrusion mold 35.

[0057] When the rice grains are thrown out by the rotary cutter, the air wall formed by the multiple second blowing holes 431 blocks the rice grains at the lower side of the air wall, thereby preventing the rice grains from sticking to the inner wall of the discharge box 45 when being thrown out, which helps to discharge the rice grains. The arc plate 47 is provided with a third blowing hole 471, and the third blowing hole 471 is arranged at an angle. The outer side of the discharge box 45 is provided with a third air duct 44, and the input end of the third air duct 44 is connected with the output end of the main air duct 42, and the third air duct 44 is connected with the inner cavity of the discharge box 45 through the third blowing hole 471. The arc plate 47 is provided with a third blowing hole 471, and the third blowing hole 471 is arranged at an angle. The angle between the hole axis of the multiple third blowing holes 471 and the axis of the main shaft 461 gradually increases. With the help of the second blowing holes 431 with a gradually increasing inclination angle, an air flow trajectory is formed toward the front and lower side of the second blowing hole 431, that is, Figure 4 The lower left side of the orientation shown allows the rice grains intercepted by the second blowing hole 431 to continue to be blown by the blowing force formed by the airflow trajectory, prompting the rice grains to fall in the falling direction of the material, thereby ensuring the falling effect of the rice grains;

[0058] Moreover, if Figure 4 As shown, along the direction of the third blowing hole 471 away from the second blowing hole 431, the apertures of the multiple third blowing holes 471 gradually increase. Since the multiple third blowing holes 471 are all connected to the third air duct 44, the air output of the third blowing hole 471 gradually increases, compensating for the attenuation of the air flow as the distance from the second blowing hole 431 increases, ensuring that there is enough air volume from the second blowing hole 431 along the entire path of the arc track of the arc plate 47 to cause the rice grains to fall to the lower left side.

[0059] In another embodiment, the present invention further provides a composite food extrusion molding method using the composite food extrusion molding device, comprising the following steps:

[0060] A variety of powder materials are fed into the powder feed pipe 12 and preliminarily mixed through the pre-mixing assembly 13;

[0061] The preliminarily mixed powder and liquid raw materials in the mixing box 21 are mixed evenly and transported to the extrusion pipe 33 through the discharge pipe 23;

[0062] The screw 34 rotates to spirally convey the material to the end of the extrusion die 35 to extrude the initially formed food;

[0063] The preliminarily formed food is peeled by the first peeling blade 102 and the second peeling blade 104 to form a granular composite food, which is then discharged to the conveyor belt through the discharge box 45;

[0064] The granular composite food peeled by the first peeling blade 102 is blown away by the first blowing hole 111 , and the granular composite food peeled tends to fall toward the discharge side of the discharge box 45 under the blowing of the second blowing hole 431 and the third blowing hole 471 .

[0065] It should be noted that, when the composite food extrusion molding device is in use, a plurality of powder materials are fed into the powder feed pipe 12, and pre-mixed by means of the pre-mixing assembly 13, and the clogging of the powder feed pipe 12 can be prevented. The liquid raw material is fed into the mixing box 21 through the liquid feed pipe 11, and the two are mixed and stirred into a wet rice flour dough under the action of the mixing and stirring assembly 22. The dough is then conveyed to the extrusion pipe 33 through the discharge pipe 23 and the receiving hopper 32, and then extruded through the extrusion die 35 under the spiral conveying of the screw 34.

[0066] Then, driven by the motor 46, the main shaft 461 drives the base 462 to rotate, so that the first rotary cutter 102 and the second rotary cutter 104 rotate synchronously, realizing the partitioned rotary cutting of the material extruded by the extrusion die 35. At this time, the first air duct 108 extends out of the first knife seat 110, and the fan 41 sequentially transmits the air flow to the first air duct 108 through the main air duct 42, the internal channel opened in the main shaft 461 and the connecting pipe 109, and blows the front edge of the first rotary cutter 102 through the first blowing hole 111, so that the rice grains cut by the first rotary cutter 102 are blown away. The invention effectively prevents the rice grains from sticking to the surface of the first rotary cutter 102. Since the rotary cutting linear speed of the blade of the second rotary cutter 104 is greater than the rotary cutting linear speed of the blade of the first rotary cutter 102, it is necessary to scrape them off with the help of external force. When the rotary cutter needs to be cleaned, there is no need to disassemble the equipment. The second blade holder 105 can be dragged toward the base 462 by the telescopic member 106. The rear edge of the first rotary cutter 102 and the front edge of the second rotary cutter 104 are fitted together to scrape off the rice grains stuck to the second rotary cutter 104, and the cleaning effect is good.

[0067] Moreover, when the rice grains cut by the rotary cutter are thrown out, an air wall is formed through the second blowing hole 431, which effectively prevents the rice grains from being thrown onto the inner wall of the discharge box 45, and the blowing direction of the second blowing hole 431 is horizontal, and further with the help of multiple third blowing holes 471 with gradually increasing inclined angles, the rice grains are prompted to fall downward to ensure the falling of the material.

[0068] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A composite food extrusion molding device, characterized in that: include: A mixing mechanism (2) for mixing powdered raw materials and liquid raw materials; An extrusion mechanism (3) is used to extrude and shape the material mixed by the mixing mechanism (2); The rotary cutting mechanism (4) is arranged on the discharge side of the extrusion die (35) in the extrusion mechanism (3); the rotary cutting assembly (101) in the rotary cutting mechanism (4) includes a first rotary cutting blade (102), a second rotary cutting blade (104), a rotary cutting drive assembly and a purge assembly; the second rotary cutting blade (104) is arranged at the output end of the rotary cutting drive assembly through a telescopic member (106); the first rotary cutting blade (102) is arranged at the output end of the rotary cutting drive assembly; the rotary cutting drive assembly is used to drive the first rotary cutting blade (102) and the second rotary cutting blade (104) to rotate at the same angular velocity around the axis of the extrusion die (35); wherein, along the radial direction of the extrusion die (35), the second rotary cutting blade (104) is located at the first rotary cutting blade (104) and the second rotary cutting blade (104) rotates at the same angular velocity. 2) on a side away from the axis of the extrusion die (35), and along the rotation direction of the first rotary cutter (102), the rear edge of the first rotary cutter (102) is located in front of the front edge of the second rotary cutter (104), the purge component is arranged on the front edge of the first rotary cutter (102), and the purge component is used to purge and remove granular food adhered to the front edge of the first rotary cutter (102), and the telescopic member (106) is used to drive the second rotary cutter (104) to reciprocate along the radial direction of the extrusion die (35), when the telescopic member (106) drives the second rotary cutter (104) to move toward the axis of the extrusion die (35) to a maximum displacement, the rear edge of the first rotary cutter (102) and the front edge of the second rotary cutter (104) are in contact with each other.

2. A composite food extrusion molding device according to claim 1, characterized in that: The mixing mechanism (2) comprises a mixing box (21) and a mixing and stirring assembly (22), the mixing and stirring assembly (22) being arranged in the mixing box (21), a feeding mechanism (1) being arranged at the upper end of the mixing box (21), the feeding mechanism (1) comprising a liquid feeding pipe (11), a powder feeding pipe (12) and a pre-stirring assembly (13), the liquid feeding pipe (11) and the powder feeding pipe (12) being respectively connected to the mixing box (21), wherein the pre-stirring assembly (13) is arranged in the powder feeding pipe (12), the pre-stirring assembly (13) being used for pre-mixing and stirring a plurality of powder raw materials fed into the powder feeding pipe (12), and the mixing and stirring assembly (22) being used for mixing the liquid raw material and the plurality of powder raw materials; The lower end of the mixing box (21) is provided with a discharge pipe (23), which is in communication with the mixing box (21). The discharge pipe (23) is used to discharge the evenly mixed materials in the mixing box (21) out of the mixing box (21).

3. A composite food extrusion molding device according to claim 2, characterized in that: The extrusion mechanism (3) comprises an extrusion drive (31), an extrusion tube (33) and a screw (34). The extrusion tube (33) is arranged at a lower position of the mixing box (21). A receiving hopper (32) is arranged on the side of the extrusion tube (33). The receiving hopper (32) is used to receive the material discharged by the discharge tube (23). An extrusion die (35) is fixedly arranged at the output end of the extrusion tube (33). A screw (34) is arranged in the extrusion tube (33). The input end of the screw (34) is transmission-connected to the extrusion drive (31). The extrusion drive (31) is used to drive the screw (34) to spirally convey the material to the end of the extrusion die (35).

4. A composite food extrusion molding device according to claim 1, characterized in that: The rotary cutting drive assembly includes a motor (46), a main shaft (461) and a base (462); the extrusion die (35) is embedded in the discharge box (45), and the extrusion end of the extrusion die (35) is located in the inner cavity of the discharge box (45); the output end of the motor (46) is transmission-connected to the main shaft (461); one end of the main shaft (461) located in the inner cavity of the discharge box (45) is fixedly connected to the base (462); the first rotary cutter (102) is fixedly arranged on the base (462); the second rotary cutter (104) is fixedly connected to the second knife seat (105); the fixed end of the telescopic member (106) is arranged on the base (462); the telescopic end of the telescopic member (106) is fixedly arranged on the second knife seat (105); wherein the axis of the main shaft (461) is consistent with the axis of the extrusion die (35).

5. A composite food extrusion molding device according to claim 4, characterized in that: Along the rotation direction of the first rotary cutter (102), a first blade seat (110) is provided behind the first rotary cutter (102), and the first blade seat (110) is fixedly provided on the base (462). The second rotary cutter (104) is located between the first rotary cutter (102) and the first blade seat (110), and the rear edge surface of the second rotary cutter (104) is in contact with the first blade seat (110).

6. A composite food extrusion molding device according to claim 5, characterized in that: The purge assembly includes a fan (41), a main air duct (42), a first air duct (108) and a shift assembly, wherein the air outlet of the fan (41) is connected to the input end of the main air duct (42), the output end of the main air duct (42) is connected to the connecting pipe (109) through an internal channel provided in the main shaft (461), the output end of the connecting pipe (109) is connected to the first air duct (108), a first blowing hole (111) is provided on the first air duct (108), the blowing direction of the first blowing hole (111) is set toward the front edge surface of the first rotary cutter (102), the first air duct (108) is slidably connected to the first knife seat (110), the output end of the shift assembly is transmission-connected to the first air duct (108), and the shift assembly is used to drive the first air duct (108) to switch between a position extending outside the first knife seat (110) and a position accommodated in the first knife seat (110).

7. A composite food extrusion molding device according to claim 6, characterized in that: The displacement assembly includes a spring (112), a guide rod (113) and an abutment block (107); one end of the first air duct (108) located in the first knife seat (110) is fixedly connected to the guide rod (113); the guide rod (113) passes through the first knife seat (110) and is slidably connected to the first knife seat (110); the guide rod (113) is sleeved with a spring (112); the second knife seat (105) is fixedly provided with an abutment block (107); an arc convex surface is provided at one end of the first air duct (108) adjacent to the abutment block (107); the abutment inclined surface of the abutment block (107) abuts and cooperates with the arc convex surface of the first air duct (108).

8. A composite food extrusion molding device according to claim 7, characterized in that: A second air duct (43) is provided on the outside of the discharge box (45), the input end of the second air duct (43) is communicated with the output end of the main air duct (42), and the output end of the second air duct (43) is communicated with the inner cavity of the discharge box (45) through a second blowing hole (431) provided on the side wall of the discharge box (45), wherein the plurality of second blowing holes (431) located above the axis of the extrusion die (35) are distributed circumferentially around the extrusion die (35), and the plurality of second blowing holes (431) located below the axis of the extrusion die (35) are distributed in an orderly manner along the vertical direction; An arc plate (47) is fixedly provided on the top of the inner cavity of the discharge box (45), and the arc plate (47) is located on the side of the second blowing hole (431) away from the extrusion die (35). Along the direction of the main shaft (461) away from the extrusion die (35), the distance between the inner arc surface of the arc plate (47) and the axis of the main shaft (461) gradually decreases, wherein the arc plate (47) is located above the axis of the extrusion die (35).

9. The composite food extrusion molding device according to claim 8, characterized in that: A third blowing hole (471) is provided in the arc plate (47), and the third blowing hole (471) is tilted. A third air duct (44) is provided on the outside of the discharge box (45), and the input end of the third air duct (44) is connected with the output end of the main air duct (42), and the third air duct (44) is connected with the inner cavity of the discharge box (45) through the third blowing hole (471). The third blowing hole (471) is tilted. Along the direction of the third blowing hole (471) away from the second blowing hole (431), the apertures of the plurality of third blowing holes (471) gradually increase, and the angles between the hole axis lines of the plurality of third blowing holes (471) and the axis line of the main shaft (461) gradually increase.

10. A composite food extrusion molding method, using the composite food extrusion molding device according to claim 9, characterized in that: The following steps are involved: A plurality of powder raw materials are fed into a powder feed pipe (12) and preliminarily mixed through a pre-stirring assembly (13); The preliminarily mixed powder and liquid raw materials in the mixing box (21) are mixed uniformly and transported to the extrusion pipe (33) through the discharge pipe (23); The screw (34) is rotated to spirally convey the material to the end of the extrusion die (35) to extrude the initially formed food; The preliminarily formed food is peeled by a first peeling knife (102) and a second peeling knife (104) to form a granular composite food, which is then discharged onto a conveyor belt through a discharge box (45); The granular composite food peeled off by the first rotary cutter (102) is blown off by the first blowing hole (111), and the granular composite food peeled off tends to fall toward the discharge side of the discharge box (45) under the blowing of the second blowing hole (431) and the third blowing hole (471).

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