Making method of low-salt, low-sugar and low-fat dietary vegetable sausage

Abstract

The invention discloses a making method of a low-salt, low-sugar and low-fat dietary vegetable sausage, and relates to the technical field of food processing. The preparation method of the low-salt, low-sugar and low-fat dietary vegetable sausage comprises the following steps: 1, cleaning fresh corn, agaric, carrot and chive, cooking or blanching, dehydrating and chopping or pulping to obtain a composite vegetable base material, pre-cooling and mincing lean pork or chicken breast, and chopping and mixing at low temperature to obtain a viscoelastic meat paste base material; and 2, mixing the composite vegetable base material with the meat paste base material, adding a sugar alcohol sweetening agent, a licorice extract and a yeast extract, and stirring in a vacuum environment to prepare the low-salt, low-sugar and low-fat stuffing. By arranging the exhaust pipeline composed of the circular-truncated-cone-shaped pipe section and the columnar pipe section and enabling the inner diameter of the circular-truncated-cone-shaped pipe section to be gradually reduced in the flowing direction of the stuffing, the continuously-increasing pressure gradient is constructed in the flow channel, and staged and gradient treatment of the high-fiber and low-fat vegetable stuffing is achieved.

Description

Technical Field

[0001] This invention relates to the field of food processing technology, specifically to a method for preparing a low-salt, low-sugar, and low-fat vegetable sausage. Background Technology

[0002] Most sausages on the market are currently made purely of meat, or primarily of pork or chicken with added starch, sugar, and other ingredients. This type of sausage has limitations; it's not suitable for people with diabetes, those trying to lose weight, or those on a fitness regimen, as it can lead to excessive intake of carbohydrates, energy, and fat. To address these limitations and make sausage products healthier and more accessible to the general public, a new type of sausage is being developed that is low in salt, sugar, and fat, and rich in dietary fiber. This type of product typically requires industrial production through processes such as raw material pretreatment, compounding, vacuum filling, maturation, and sterilization. This ensures both good taste and texture while also considering nutritional balance and the safety of consumption by specific groups.

[0003] However, the following problems still exist in the existing vacuum filling and molding process: The filling channels mostly adopt a constant diameter or simple tapering structure, which cannot establish an effective progressive pressure gradient during the filling process. It is difficult to achieve staged compaction and deep degassing of high-fiber and low-fat materials. At the same time, the equipment relies only on vacuum suction or unidirectional extrusion, which can only remove air from the macroscopic cavity in the channel, but cannot remove the tiny air bubbles trapped by the plant fiber network. During the pressure filling process, these residual air bubbles migrate under pressure and accumulate on the inner wall of the casing, forming annular air gaps or structurally weak layers on the cross-section of the sausage. Especially in low-fat and low-additive systems, the material filling density is insufficient, resulting in a loose structure and easy formation of voids in the finished sausage, which seriously affects the product's density and appearance quality. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method for preparing low-salt, low-sugar, and low-fat vegetable sausages, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing a low-salt, low-sugar, and low-fat vegetable sausage, comprising: Step 1: washing fresh corn, wood ear fungus, carrots, and scallions, then steaming or blanching them, dehydrating them, and chopping or pulping them to obtain a compound vegetable base; pre-cooling, mincing, and chopping lean pork or chicken breast at low temperature to form a viscoelastic meat paste base; Step 2: mixing the compound vegetable base with the meat paste base, adding sugar alcohol sweeteners, licorice extract, and yeast extract, and then processing the mixture in a vacuum ring. Step 3: Stir under a vacuum environment to obtain a low-salt, low-sugar, and low-fat filling; Step 4: Feed the filling into a vacuum filling and forming machine. The filling pipe of the vacuum filling and forming machine is equipped with a diversion device. The diversion device is equipped with an extrusion component, which is used to apply multi-directional dynamic extrusion to the filling as it flows through, and in combination with the vacuum effect, remove the air bubbles trapped between the plant fiber and the minced meat in the filling; Step 5: Fill the pre-softened sausage casing with the degassing filling, control the filling fullness and tie it tightly in sections to obtain a low-salt, low-sugar, and low-fat vegetable sausage.

[0006] Furthermore, the diversion device includes multiple exhaust pipes connected in sequence. The exhaust pipes are composed of frustum-shaped pipe sections and cylindrical pipe sections. Along the direction of filling flow, the inner diameter of the frustum-shaped pipe sections gradually decreases to form an increasing pressure gradient. Inside the frustum-shaped pipe section, there are conical cavities and frustum-shaped cavities made of elastic rubber material. The cone apex of the conical cavity faces the opposite direction of filling flow. When the filling flows through, it passes through the annular gap between the inner wall of the frustum-shaped pipe section and the conical and frustum-shaped cavities. The extrusion assembly is located inside the conical cavity and is used to apply multi-directional dynamic extrusion force to the conical cavity. This extrusion force is transmitted to the flowing filling through the elastic cavity, so that the filling is subjected to shearing and friction when passing through the annular gap, thereby efficiently expelling the fine air bubbles entrained therein.

[0007] Furthermore, the extrusion assembly includes arc-shaped columns evenly distributed along the circumference of the conical cavity. An elastic telescopic rod is connected to the side of the arc-shaped column near the frustum-shaped cavity, and the other end of the elastic telescopic rod is hinged to a square plate. A control plate is installed at the hinged end of the elastic telescopic rod. An inclined rod is hinged to the side of the control plate away from the elastic telescopic rod via a pin. The pin is slidably engaged with the control plate. The other end of the inclined rod is hinged to a moving block, which can reciprocate along the axial direction of the conical cavity.

[0008] Furthermore, the arc-shaped column is rotatably connected to the telescopic end of the elastic telescopic rod, and a rotary elastic element is provided between the two. The inner wall of the conical cavity is provided with multiple protrusions, which are staggered along the swing direction of the arc-shaped column.

[0009] Furthermore, the extrusion assembly includes rollers evenly distributed circumferentially along the conical cavity. The rollers extend along the generatrix of the conical cavity and are rotatably mounted on a fixed frame. A connecting block is provided on the side of the fixed frame near the axis of the conical cavity. A square block is provided in the middle of the conical cavity. A fixed truncated cone is provided at one end of the square block near the cone apex of the conical cavity and is fixedly connected to the conical cavity. A spiral groove is provided on the outer side of the fixed truncated cone. Two coaxially fixed rotating rings are fitted on the outer side of the fixed truncated cone. The rotating rings correspond to the positions of the corresponding rollers. A control rod is installed on the side of the connecting block near the fixed truncated cone. The control rod is slidably connected to the rotating rings radially and slidably engaged with the spiral groove.

[0010] Furthermore, a rotating disk is rotatably mounted on the side of the square block near the rotating ring. The rotating disk and the rotating ring are connected by telescopic plates evenly distributed around the circumference. A guide post that slides on the square block and is in sliding cooperation with the fixed truncated cone is slidably mounted on it. A spiral groove is opened on the outer side of the guide post. An inner post that slides on the rotating disk and is in sliding cooperation with the spiral groove is mounted on it. A return spring is provided between the end of the guide post and the square block and is sleeved on the outer circumference of the guide post.

[0011] Furthermore, the fixing frame is rotatably connected to the connecting block, and an elastic torsion member is provided between the two. The inner wall of the conical cavity is provided with multiple baffles, which are staggered along the rotation direction of the roller.

[0012] Furthermore, a connecting ring frame is installed inside the frustum-shaped cavity, a sliding column is slidably arranged in the middle of the connecting ring frame, a right-hand spiral groove is opened on the outer side of the sliding column, and a sliding rod that slides in cooperation with the right-hand spiral groove is installed on the connecting ring frame.

[0013] Furthermore, a rotating plate is rotatably mounted on one end of the frustum-shaped cavity away from the conical cavity, and a fixed sleeve is mounted on the end of the rotating plate near the connecting ring frame. A left-handed helical groove is opened on the inner side of the fixed sleeve, and an extension rod that slides in cooperation with the left-handed helical groove is mounted on the end of the sliding column near the fixed sleeve.

[0014] Furthermore, the outer circumferential surface of the rotating plate is provided with a plurality of circumferentially evenly distributed concave holes, and the inner wall of the frustum-shaped cavity is provided with a plurality of circumferentially evenly distributed ball bearings, which roll in cooperation with the frustum-shaped cavity.

[0015] The present invention has the following beneficial effects: (1) The method for making this low-salt, low-sugar, and low-fat vegetable sausage involves setting up an exhaust pipe composed of frustum-shaped and columnar pipe sections, and gradually reducing the inner diameter of the frustum-shaped pipe sections along the flow direction of the filling, thereby constructing a continuously increasing pressure gradient in the flow channel. This pressure gradient sequentially forms a low-pressure wetting zone, a medium-pressure compaction zone, and a high-pressure shaping zone, thereby achieving a phased and gradient treatment of high-fiber, low-fat vegetable fillings. The pressure changes actively drive the migration, aggregation, and discharge of air bubbles, significantly improving the uniformity, density, and molding stability of the fillings, and effectively solving the problem of high-fiber materials being prone to air trapping and difficult to degas.

[0016] (2) The method for making this low-salt, low-sugar, and low-fat vegetable sausage involves setting an extrusion component inside the conical cavity. This component applies a multi-directional and periodic flexible extrusion force to the elastic cavity as the filling flows through. This force is uniformly transmitted to the filling flowing through the annular gap through the elastic cavity, allowing it to efficiently release the fine air bubbles trapped in the fiber network under the combined action of shearing and friction. This achieves continuous, gentle kneading and directional degassing of the high-fiber vegetable filling, avoiding material breakage or uneven distribution caused by traditional rigid extrusion. This significantly improves degassing efficiency, filling density, and product uniformity.

[0017] (3) The method of making this low-salt, low-sugar, and low-fat vegetable sausage involves rotating the frustum-shaped cavity back and forth, causing the filling between its outer wall and the inner wall of the frustum-shaped tube to be subjected to periodic circumferential shearing and friction. This applies dynamic kneading force to the high-fiber material from both radial and circumferential dimensions, effectively removing micro-bubbles remaining in the fiber gaps. At the same time, a rotating plate with a rotation direction opposite to that of the frustum-shaped cavity is also set up to form a synergistic effect of reverse shearing, which significantly enhances the disturbance intensity of the filling in the flow channel, effectively breaks up fiber agglomeration, promotes bubble migration and aggregation, thereby greatly improving the uniformity of exhaust, the density of filling and the stability of product structure.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] Figure 1 Flowchart of the preparation method for low-salt, low-sugar, and low-fat vegetable sausages; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a cross-sectional view of the vacuum filling and forming machine and the diversion device in this invention. Figure 4 This is a partial cross-sectional view of the exhaust pipe in this invention; Figure 5 This is a partial cross-sectional view of the frustum-shaped tube segment and the frustum-shaped cavity in this invention. Figure 6This is a schematic diagram of the conical cavity and the arc-shaped column in Embodiment 1 of the present invention; Figure 7 This is a partial cross-sectional view of the cone-shaped cavity in Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the structure of the frustum-shaped cavity and the connecting ring frame in this invention; Figure 9 This is a partial cross-sectional view of the frustum-shaped cavity in this invention; Figure 10 This is a partial structural diagram of the frustum-shaped cavity and the rotating plate in this invention; Figure 11 This is a partial cross-sectional view of the frustum-shaped tube segment and the frustum-shaped cavity in Embodiment 2 of the present invention; Figure 12 This is a schematic diagram of the conical cavity and roller structure in Embodiment 2 of the present invention; Figure 13 This is a partial cross-sectional view of the cone-shaped cavity in Embodiment 2 of the present invention; Figure 14 This is a partial cross-sectional view of the fixed frustum and rotating disk in Embodiment 2 of the present invention.

[0020] In the diagram, 1. Vacuum filling and forming machine; 2. Diverting device; 21. Frustum-shaped tube section; 211. Conical cavity; 212. Frustum-shaped cavity; 213. Cross; 22. Columnar tube section; 3. Extrusion assembly; 31. Arc-shaped column; 311. Elastic telescopic rod; 312. Square plate; 313. Control panel; 314. Inclined rod; 315. Moving block; 316. Moving rod; 317. Connecting spring; 319. Wedge block; 320. L-shaped bracket; 321. Push rod; 322. Mounting sleeve; 323. Push frame; 324. Small cylinder; 325. Protrusion; 32 6. Connecting ring frame; 327. Sliding column; 328. Right-hand spiral groove; 329. Slide rod; 330. Rotating plate; 331. Fixed sleeve; 332. Left-hand spiral groove; 333. Extension rod; 334. Ball bearing; 335. Roller; 336. Fixed frame; 337. Square block; 338. Fixed truncated cone; 339. Spiral groove; 340. Rotating ring; 341. Connecting block; 342. Control rod; 343. Rotating disk; 344. Telescopic plate; 345. Guide column; 346. Spiral groove; 347. Inner column; 348. Return spring; 349. Stop ball. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0023] The following is based on Figures 1-14 This invention describes a method for preparing a low-salt, low-sugar, and low-fat vegetable sausage according to an embodiment of the present invention.

[0024] Example 1, this example refers to Figures 1-10 .

[0025] Please refer to Figures 1-5 The preparation method for this low-salt, low-sugar, and low-fat vegetable sausage includes the following steps: Step 1: Wash fresh corn, wood ear fungus, carrots and scallions, then steam or blanch them, dehydrate them and chop or mash them to make a compound vegetable base. Pre-cool lean pork or chicken breast, mince it and chop it at low temperature to make a viscoelastic meat paste base. Step 2: Mix the compound vegetable base with the minced meat base, add sugar alcohol sweeteners, licorice extract and yeast extract, and stir under vacuum to obtain a low-salt, low-sugar and low-fat filling. Step 3: The filling is fed into the vacuum filling and forming machine 1. The filling pipe of the vacuum filling and forming machine 1 is equipped with a diversion device 2. The diversion device 2 is equipped with an extrusion component 3, which is used to apply multi-directional dynamic extrusion to the filling as it flows through, and in combination with the vacuum action, remove the air bubbles trapped between the plant fiber and the meat paste in the filling. Step 4: Fill the pre-softened sausage casings with the degassing filling, control the filling fullness and tie them tightly in sections to obtain low-salt, low-sugar, and low-fat vegetable sausages.

[0026] Among them, such as Figure 2 and Figure 3As shown, the diversion device 2 in step three includes multiple exhaust pipes connected in sequence. The exhaust pipes and the filling pipes of the vacuum filling and molding machine 1 are connected by a detachable and sealed method (such as clamp connection) to facilitate quick installation, cleaning and maintenance. The exhaust pipe is composed of a frustum-shaped pipe section 21 and a columnar pipe section 22. Along the direction of filling flow, the inner diameter of the frustum-shaped pipe section 21 gradually decreases, thereby forming an increasing pressure gradient in the flow channel. This pressure gradient forms low-pressure, medium-pressure and high-pressure areas along the flow channel, which work together to achieve the wetting, compaction and shaping of the filling. The whole process effectively promotes the migration and discharge of air bubbles by simulating the physical process of "kneading and degassing", and improves the uniformity and density of the high-fiber, low-fat vegetable sausage filling.

[0027] In use, under vacuum conditions, the evenly mixed filling enters the filling pipe of the vacuum filling and molding machine 1 and flows through a pressure gradient channel composed of multiple exhaust pipes. The inner diameter of the channel gradually narrows along the flow direction, forming an increasing pressure distribution, which gradually compacts the filling and removes entrained air bubbles during the process. Subsequently, the degassed filling is extruded through the filling port and simultaneously segmented, sealed and twisted by the twisting mechanism according to the preset length to obtain a dense, plump, low-salt, low-sugar, and low-fat vegetable sausage.

[0028] like Figures 4-6 As shown, inside the frustum-shaped tube section 21, there are cone-shaped cavities 211 and frustum-shaped cavities 212 made of food-grade elastic rubber. The two are connected to each other by a snap-fit ​​method and are snapped together onto a cross 213 fixed to the inner wall of the frustum-shaped tube section 21, forming a modular component that can be disassembled as a whole, which is convenient for cleaning and replacement. The cross 213 does not interfere with the main flow path of the filling, ensuring smooth material passage. The cone apex of the cone-shaped cavity 211 faces the opposite direction to the flow direction of the filling, which guides and buffers the incoming material. The filling can pass through the annular gap between the inner wall of the frustum-shaped tube section 21 and the elastic cavity, which not only plays a role in uniformly distributing the filling, but also achieves flexible force application under multi-directional extrusion, avoiding excessive shearing of high-fiber vegetable particles, while promoting the removal of air bubbles from the material, improving filling uniformity and product density.

[0029] like Figure 5 As shown, the extrusion assembly 3 is located inside the conical cavity 211 and is used to apply multi-directional dynamic extrusion force to the conical cavity 211. This extrusion force is transmitted to the filling through the elastic cavity, so that the filling is subjected to shearing and friction when passing through the annular gap, thereby efficiently expelling the fine air bubbles entrained therein, thereby improving the density of the filling and the uniformity of filling.

[0030] It should be noted that when the conical cavity 211 and the frustum-shaped cavity 212 undergo elastic deformation under stress, their sealing structure can still maintain an effective seal and does not affect the overall sealing performance.

[0031] Specifically, such as Figure 6 and Figure 7 As shown, the extrusion assembly 3 includes arc-shaped columns 31 evenly distributed circumferentially along the conical cavity 211. The arc-shaped columns 31 extend circumferentially and conform to the contour of the inner wall of the cavity. An elastic telescopic rod 311 is connected to the side of the arc-shaped column 31 near the frustum-shaped cavity 212. The other end of the elastic telescopic rod 311 is hinged to a square plate 312 fixed on the cross 213. Under the elastic force of the elastic telescopic rod 311, the arc-shaped column 31 always presses against the inner wall of the conical cavity 211 and can swing back and forth along its inclined generatrix. This allows the arc-shaped column 31 to apply dynamic and multi-directional flexible extrusion force to the elastic cavity when the filling passes through, thereby transmitting the pressure to the material. This achieves continuous kneading and air bubble removal of the high-fiber vegetable filling, effectively improving the degassing efficiency and filling uniformity.

[0032] like Figure 7 As shown, in order to realize the reciprocating swing of the elastic telescopic rod 311, a control plate 313 is installed at the hinged end of the elastic telescopic rod 311. The side of the control plate 313 away from the elastic telescopic rod 311 is hinged to an inclined rod 314 by a pin. The pin is slidably engaged with the control plate 313. The other end of the inclined rod 314 is hinged to the moving block 315. A moving rod 316 is installed on the side of the moving block 315 near the square plate 312. The moving rod 316 is slidably connected to the square plate 312 and passes through the square plate 312. A connecting spring 317 sleeved on the outer periphery of the moving rod 316 is connected between its protruding end and the square plate 312 to provide a restoring force for the moving rod 316.

[0033] During operation, when an external force drives the moving block 315 to move to the left along the axial direction of the conical cavity 211, it causes the tilting rods 314 to move synchronously. The tilting rods 314 pull the control plate 313 outward around the hinge point through the pin shaft, thereby pulling the elastic telescopic rod 311 to swing around its hinge point with the square plate 312, so that the arc-shaped column 31 applies dynamic compression to the inner wall of the conical cavity 211. When the external force reverses, it pushes the moving block 315 to reset to the right, and the control plate 313 and the elastic telescopic rod 311 swing back synchronously, thus completing one reciprocating swing cycle.

[0034] like Figure 7 and Figure 8As shown, to achieve the axial reciprocating movement of the moving block 315, a horizontal column is installed at its left end, and a wedge block 319 is set on the left side of the horizontal column. The inclined surface of the wedge block 319 faces downward and slides in contact with the horizontal column. When the wedge block 319 moves up and down, its inclined surface pushes the horizontal column to move left and right along the axis, thereby driving the moving block 315 to move synchronously back and forth. In the initial state, the connecting spring 317 is in a stretched state. When the wedge block 319 moves upward, under the elastic force of the connecting spring 317, the horizontal column slides to the left along the inclined surface of the wedge block 319, driving the moving block 315 to move to the left. When the wedge block 319 moves downward, its inclined surface squeezes the horizontal column to the right, causing the moving block 315 to overcome the tension of the connecting spring 317 and retract. The connecting spring 317 is further stretched, completing one drive cycle.

[0035] like Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, to achieve the reciprocating up and down movement of the wedge block 319, an L-shaped bracket 320 is installed at its upper end. A push rod 321 is installed at the upper end of the horizontal section of the L-shaped bracket 320. To prevent the movement of the push rod 321 from interfering with the flow of filling, an installation sleeve 322 is installed on the frustum-shaped tube section 21, extending into the conical cavity 211. The push rod 321 passes through the installation sleeve 322 and slides with it. The installation sleeve 322 guides and protects the push rod 321 without obstructing the passage of material. The push rod 321 extends upward through the conical cavity 211 and the frustum-shaped tube section 21 and then extends to the outside. The upper ends of the push rods 321 corresponding to each frustum-shaped tube section 21 are connected to the same push frame 323 by bolts. The connection structure can be flexibly disassembled, which is convenient for installation and maintenance. The push frame 323 is connected to the output end of the small cylinder 324. The small cylinder 324 is fixed inside the housing of the vacuum filling and molding machine 1.

[0036] During operation, the small cylinder 324 drives the pusher 323 to reciprocate up and down, which in turn drives all the push rods 321 to rise and fall synchronously. Then, through the L-shaped bracket 320, each wedge block 319 moves up and down synchronously, realizing synchronous control of multiple extrusion components 3. Furthermore, the mounting sleeve 322 is connected to the frustum-shaped tube section 21 and the conical cavity 211 with a sealed structure to ensure that the entire filling channel maintains a stable vacuum environment during operation.

[0037] In addition, such as Figure 6 and Figure 7As shown, the arc-shaped column 31 is rotatably connected to the telescopic end of the elastic telescopic rod 311, and a rotary elastic element (such as a torsion spring) is provided between the two. The inner wall of the conical cavity 211 is provided with multiple protrusions 325, which are staggered along the swing direction of the arc-shaped column 31. When the elastic telescopic rod 311 drives the arc-shaped column 31 to swing back and forth, its two ends contact and are blocked by the inner wall protrusions 325 in sequence. Under the reset action of the rotary elastic element, the arc-shaped column 31 generates a local twist around its rotational connection point with the elastic telescopic rod 311. This twist causes the arc-shaped column 31 to apply additional dynamic disturbance force to the inner wall of the conical cavity 211, and transmits the multi-directional composite stress to the flowing filling through the elastic cavity, further enhancing the kneading effect on high-fiber materials and the efficiency of microbubble discharge.

[0038] like Figure 8 and Figure 9 As shown, a connecting ring frame 326 is installed inside the frustum-shaped cavity 212. The frustum-shaped cavity 212 is rotatably connected to the retaining ring, and the retaining ring is engaged with the conical cavity 211 to achieve reliable docking and relative rotation of the two cavities. A sliding column 327 is slidably provided in the middle of the connecting ring frame 326. The right end of the sliding column 327 is fixedly connected to the moving block 315 after sliding through the wedge block 319. A right-hand spiral groove 328 is opened on the outer side of the sliding column 327. A sliding rod 329 that is slidably engaged with the right-hand spiral groove 328 is installed on the connecting ring frame 326.

[0039] When the moving block 315 moves back and forth, it drives the sliding column 327 to move synchronously. The sliding column 327 converts linear motion into rotational motion through the cooperation of the right-hand spiral groove 328 and the slide rod 329, thereby driving the connecting ring frame 326 and the frustum-shaped cavity 212 connected to it to rotate back and forth around the axis. This circumferential rotation causes the filling between the outer wall of the frustum-shaped cavity 212 and the inner wall of the frustum-shaped tube section 21 to be subjected to periodic shearing and friction, applying additional kneading force to the high-fiber material from the circumferential dimension, further promoting the peeling and discharge of residual air bubbles in the fiber gaps.

[0040] like Figure 5 , Figure 8 and Figure 9 As shown, a rotating plate 330 is rotatably installed at one end of the frustum-shaped cavity 212 away from the conical cavity 211. A fixed sleeve 331 is installed at one end of the rotating plate 330 near the connecting ring frame 326. A left-handed spiral groove 332 is opened on the inner side of the fixed sleeve 331. An extension rod 333 that slides in cooperation with the left-handed spiral groove 332 is installed at one end of the sliding column 327 near the fixed sleeve 331.

[0041] When the sliding column 327 moves back and forth, it drives the extension rod 333 to move synchronously. Through its cooperation with the left-hand spiral groove 332, it drives the fixed sleeve 331 and the rotating plate 330 connected to it to rotate back and forth around the axis. The direction of rotation is opposite to the direction of rotation of the frustum-shaped cavity 212, thereby forming a reverse shearing effect at both ends of the flow channel. The reverse swing of the rotating plate 330 further enhances the circumferential friction and disturbance between it and the flowing filling, effectively breaking up fiber agglomeration, promoting bubble migration, and improving the overall exhaust uniformity and filling density.

[0042] like Figure 10 As shown, a plurality of circumferentially evenly distributed recesses are provided on the outer circumferential surface of the rotating plate 330, and a plurality of circumferentially evenly distributed ball bearings 334 are provided on the inner wall of the frustum-shaped cavity 212. The ball bearings 334 roll in cooperation with the frustum-shaped cavity 212. When the rotating plate 330 reciprocates relative to the frustum-shaped cavity 212, the ball bearings 334 roll into and out of the recesses in sequence, generating periodic slight impacts and vibrations, which helps to loosen the micro-air bubbles attached to the filling and promote their desorption and discharge. Moreover, the cooperation between the ball bearings 334 and the recesses does not participate in the sealing interface, so it does not affect the sealing performance between the rotating plate 330 and the frustum-shaped cavity 212.

[0043] In actual operation (use), under vacuum conditions, the evenly stirred filling first enters the filling pipe of the vacuum filling and molding machine 1, and flows sequentially through a pressure gradient channel composed of multiple exhaust pipes. The inner diameter of this channel gradually narrows along the flow direction of the filling, forming an increasing pressure distribution from low pressure, medium pressure to high pressure, so that the filling is gradually soaked, compacted and released entrained air bubbles during the process of advancement. Inside each exhaust pipe, the filling flows through the annular gap between the columnar pipe section 22, the frustum-shaped cavity 212 and the pipe wall. At the same time, the extrusion component 3 in the conical cavity 211 applies multi-directional dynamic extrusion force to the cavity, while the frustum-shaped cavity 212 rotates back and forth synchronously. The two work together to knead, shear and circumferentially disturb the high-fiber filling, significantly enhancing the migration and discharge effect of microbubbles. After degassing, the filling is continuously extruded from the filling port, and the downstream twisting mechanism automatically completes the segmentation, sealing and twisting according to the preset length, finally obtaining a dense, full-looking low-salt, low-sugar and low-fat vegetable sausage.

[0044] Example 2, this example refers to Figures 11-14 .

[0045] The difference between this embodiment and Embodiment 1 is that the extrusion assembly 3 here includes rollers 335 evenly distributed circumferentially along the conical cavity 211. The rollers 335 extend along the generatrix of the conical cavity 211 and fit against its inner wall. The rollers 335 are rotatably mounted on the fixed frame 336 and can reciprocate circumferentially along the inner wall of the conical cavity 211. During the circumferential rolling process, a slight radial displacement is generated, thereby applying an outward dynamic extrusion force to the conical cavity 211. This movement simultaneously imparts a combined effect of circumferential rotational force and radial extrusion force to the elastic cavity, and transmits multi-directional stress to the filling flowing through the annular gap through the cavity, significantly enhancing the shearing and kneading effect of the material in the circumferential and radial directions, and further promoting the migration and discharge of air bubbles in the fiber gaps.

[0046] like Figures 12-14 As shown, to achieve multi-directional movement of the roller 335, a square block 337 fixedly connected to the cross 213 is provided in the middle of the conical cavity 211. A fixed truncated cone 338 fixedly connected to the conical cavity 211 is provided at one end of the square block 337 near the cone top of the conical cavity 211. A spiral groove 339 is provided on the outer side of the fixed truncated cone 338. Two coaxially fixed rotating rings 340 are sleeved on the outer side of the fixed truncated cone 338. The rotating rings 340 correspond to the positions of the corresponding rollers 335. A connecting block 341 is provided on the side of the fixed frame 336 near the axis of the conical cavity 211. A control rod 342 is installed on the side of the connecting block 341 near the fixed truncated cone 338. The control rod 342 is slidably connected to the rotating ring 340 along its radial direction and slidably engaged with the spiral groove 339. A support spring sleeved on the outer circumference of the control rod 342 is connected between the connecting block 341 and the outer circumference of the rotating ring 340 to provide a reset force for the control rod 342.

[0047] During operation, the rotating ring 340 reciprocates around the fixed frustum 338 under external drive, causing the control rod 342 to rotate synchronously. Since the fixed frustum 338 is stationary, the control rod 342 generates axial displacement while rolling along the spiral groove 339, and achieves radial extension and contraction through radial sliding cooperation with the rotating ring 340. This composite motion is transmitted to the fixed frame 336 through the connecting block 341, causing the roller 335 to generate a slight radial movement while rolling circumferentially, thereby applying dynamic circumferential shear force and radial extrusion force to the inner wall of the conical cavity 211.

[0048] like Figure 13 and Figure 14As shown, in order to realize the reciprocating motion of the rotating ring 340, a rotating disk 343 is rotatably installed on the side of the square block 337 near the rotating ring 340. The rotating disk 343 and the rotating ring 340 are connected by telescopic plates 344 evenly distributed in the circumference. When the rotating disk 343 rotates, the motion is transmitted to the rotating ring 340 through the telescopic plates 344, causing it to rotate synchronously. When the rotating ring 340 moves axially, the telescopic plates 344 can extend and retract accordingly to adapt to its compound motion.

[0049] A guide post 345 is slidably mounted on the square block 337 and slidably engages with the fixed truncated cone 338. The guide post 345 is fixedly connected to the moving block 315. A spiral groove 346 is provided on the outer side of the guide post 345. An inner post 347 is mounted on the rotating disk 343 and slidably engages with the spiral groove 346. A return spring 348 is provided between the end of the guide post 345 and the square block 337 and is sleeved on the outer periphery of the guide post 345 to provide axial return force.

[0050] During operation, the moving block 315 drives the guide column 345 to reciprocate along the axial direction, and the inner column 347 slides in the spiral groove 346, converting linear motion into rotational motion, driving the rotating disk 343 to rotate reciprocally. The rotating disk 343 drives the rotating ring 340 to rotate synchronously through the telescopic plate 344. At the same time, axial displacement is generated due to the constraint of the spiral groove 339, realizing the compound action of rotation and axial movement. The return spring 348 ensures the reliable return of the guide column 345.

[0051] like Figure 12 and Figure 13 As shown, the fixing frame 336 is rotatably connected to the connecting block 341, and an elastic torsion element (such as a torsion spring) is provided between them. The inner wall of the conical cavity 211 is provided with multiple baffles 349. The baffles 349 are staggered along the rotation direction of the roller 335. When the roller 335 rolls back and forth along the circumference of the inner wall of the conical cavity 211, its surface continuously contacts and is blocked by the baffles 349. Under the action of the elastic torsion element, the fixing frame 336 generates periodic deflection and rebound around the rotation connection point between it and the connecting block 341, so that the roller 335 superimposes local torsional action during the rolling process. This torsional force is transmitted to the elastic cavity through the roller 335, further enhancing the multi-directional kneading effect on the filling and effectively promoting the peeling and discharge of microbubbles between fibers.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for preparing a low-salt, low-sugar, low-fat vegetable sausage, characterized in that, include: Step 1: Wash fresh corn, wood ear fungus, carrots and scallions, then steam or blanch them, dehydrate them and chop or mash them to make a compound vegetable base. Pre-cool lean pork or chicken breast, mince it and chop it at low temperature to make a viscoelastic meat paste base. Step 2: Mix the compound vegetable base with the minced meat base, add sugar alcohol sweeteners, licorice extract and yeast extract, and stir under vacuum to obtain a low-salt, low-sugar and low-fat filling. Step 3: The filling is fed into the vacuum filling machine (1). The filling pipe of the vacuum filling machine (1) is equipped with a diversion device (2). The diversion device (2) is equipped with an extrusion component (3) to apply multi-directional dynamic extrusion to the filling when it flows through, and to remove the air bubbles between the plant fiber and the meat paste in the filling by combining with the vacuum action. Step 4: Fill the pre-softened sausage casings with the degassing filling, control the filling fullness and tie them tightly in sections to obtain low-salt, low-sugar, and low-fat vegetable sausages.

2. The method for preparing a low-salt, low-sugar, low-fat vegetable sausage according to claim 1, characterized in that, The diversion device (2) includes multiple exhaust pipes connected in sequence. The exhaust pipes are composed of a frustum-shaped pipe section (21) and a columnar pipe section (22). Along the direction of filling flow, the inner diameter of the frustum-shaped pipe section (21) gradually decreases to form an increasing pressure gradient. The frustum-shaped tube section (21) is provided with a cone-shaped cavity (211) and a frustum-shaped cavity (212) made of elastic rubber material. The cone apex of the cone-shaped cavity (211) faces the opposite direction to the flow direction of the filling. When the filling flows through, it passes through the annular gap between the inner wall of the frustum-shaped tube section (21) and the cone-shaped cavity (211) and the frustum-shaped cavity (212). The extrusion assembly (3) is located inside the conical cavity (211) and is used to apply multi-directional dynamic extrusion force to the conical cavity (211). The extrusion force is transmitted to the filling through the elastic cavity, so that the filling is subjected to shearing and friction when passing through the annular gap, thereby efficiently expelling the tiny air bubbles entrained therein.

3. The method for preparing a low-salt, low-sugar, low-fat vegetable sausage according to claim 2, characterized in that, The extrusion assembly (3) includes arc-shaped columns (31) evenly distributed around the conical cavity (211). An elastic telescopic rod (311) is connected to one side of the arc-shaped column (31) near the frustum-shaped cavity (212). The other end of the elastic telescopic rod (311) is hinged to the square plate (312). A control plate (313) is installed at the hinged end of the elastic telescopic rod (311). An inclined rod (314) is hinged to the side of the control plate (313) away from the elastic telescopic rod (311) via a pin. The pin is slidably engaged with the control plate (313). The other end of the inclined rod (314) is hinged to the moving block (315). The moving block (315) can reciprocate along the axial direction of the conical cavity (211).

4. The method for preparing a low-salt, low-sugar, low-fat vegetable sausage according to claim 3, characterized in that, The arc-shaped column (31) is rotatably connected to the telescopic end of the elastic telescopic rod (311), and a rotary elastic element is provided between the two. The inner wall of the cone-shaped cavity (211) is provided with multiple protrusions (325), and the protrusions (325) are staggered along the swing direction of the arc-shaped column (31).

5. The method for preparing a low-salt, low-sugar, low-fat vegetable sausage according to claim 2, characterized in that, The extrusion assembly (3) includes rollers (335) evenly distributed around the conical cavity (211). The rollers (335) extend along the generatrix of the conical cavity (211). The rollers (335) are rotatably mounted on a fixed frame (336). A connecting block (341) is provided on the side of the fixed frame (336) near the axis of the conical cavity (211). The conical cavity (211) has a square block (337) in the middle. The square block (337) has a fixed truncated cone (338) fixedly connected to the conical cavity (211) at one end near the cone top of the conical cavity (211). The fixed truncated cone (338) has a spiral groove (339) on its outer side. Two coaxially fixed rotating rings (340) are fitted on the outer side of the fixed truncated cone (338). The rotating rings (340) are respectively positioned opposite to the corresponding rollers (335). A control rod (342) is installed on the side of the connecting block (341) near the fixed truncated cone (338). The control rod (342) slides along the radial direction of the rotating ring (340) and slides with the spiral groove (339).

6. The method for preparing a low-salt, low-sugar, low-fat vegetable sausage according to claim 5, characterized in that, A rotating disk (343) is rotatably mounted on the side of the square block (337) near the rotating ring (340). The rotating disk (343) and the rotating ring (340) are connected by a circumferentially distributed telescopic plate (344). A guide post (345) that slides on the square block (337) and slides with the fixed truncated cone (338) is slidably mounted on the square block (337). A spiral groove (346) is provided on the outer side of the guide post (345). An inner post (347) that slides with the spiral groove (346) is mounted on the rotating disk (343). A return spring (348) sleeved on the outer periphery of the guide post (345) is provided between the end of the guide post (345) and the square block (337).

7. The method for preparing a low-salt, low-sugar, low-fat vegetable sausage according to claim 5, characterized in that, The fixed frame (336) is rotatably connected to the connecting block (341), and an elastic torsion member is provided between them. The inner wall of the conical cavity (211) is provided with multiple stop beads (349), and the stop beads (349) are staggered along the rotation direction of the roller (335).

8. The method for preparing a low-salt, low-sugar, low-fat vegetable sausage according to claim 2, characterized in that, The frustum-shaped cavity (212) is equipped with a connecting ring frame (326). A sliding column (327) is slidably arranged in the middle of the connecting ring frame (326). A right-hand spiral groove (328) is opened on the outside of the sliding column (327). A sliding rod (329) that slides with the right-hand spiral groove (328) is installed on the connecting ring frame (326).

9. The method for preparing a low-salt, low-sugar, low-fat vegetable sausage according to claim 8, characterized in that, A rotating plate (330) is rotatably mounted on one end of the frustum-shaped cavity (212) away from the conical cavity (211). A fixed sleeve (331) is mounted on one end of the rotating plate (330) near the connecting ring frame (326). A left-handed spiral groove (332) is opened on the inner side of the fixed sleeve (331). An extension rod (333) that slides in cooperation with the left-handed spiral groove (332) is mounted on one end of the sliding column (327) near the fixed sleeve (331).

10. The method for preparing a low-salt, low-sugar, low-fat vegetable sausage according to claim 9, characterized in that, The outer circumferential surface of the rotating plate (330) is provided with a plurality of circumferentially evenly distributed concave holes, and the inner wall of the frustum-shaped cavity (212) is provided with a plurality of circumferentially evenly distributed ball bearings (334), which roll in cooperation with the frustum-shaped cavity (212).

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