Involute type liquid powder kneading screw rod and kneading device

Abstract

The utility model relates to an involute type liquid powder kneading screw rod and a kneading device, and belongs to the technical field of cooked wheaten food processing machinery. Comprising a kneading rod, the kneading rod is of a round-rod-shaped structure, a middle spiral kneading structure is fixedly arranged in the middle of the cylindrical surface of the outer side of the kneading rod, the middle spiral kneading structure is spirally wound and fixed to the cylindrical surface of the outer side of the kneading rod, and a plurality of notches are formed in the outer edge of each thread pitch layer of the middle spiral kneading structure; the edges of the inner walls of the two sides of the notch in the middle spiral kneading structure are each of an involute structure, and the rotating direction of the involute structures on the inner walls of the two sides of the notch is kept the same as that of the middle spiral kneading structure; the problems that an existing stirring and kneading part is inconvenient to clean, and the stirring and kneading effect of liquid powder is not ideal are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pasta processing machinery, and specifically relates to an involute type liquid-powder kneading spiral rod and a kneading device. Background Art

[0002] The current liquid-powder mixing and kneading equipment all measures the liquid and powder in a certain proportion in advance and then places them into a mixing chamber for mixing and kneading into a dough for different needs. Taking a noodle making machine as an example, the applicant applied for an invention patent with application number 201210380252.2 on September 29, 2012 and has been authorized. The present application is a further improvement on the previous patent. During the implementation of the previous patent, there was a problem of poor working stability after the liquid and powder were combined, and the mixing and kneading effect of the liquid and powder was not ideal. Since the spiral propeller has backflow leakage after being subjected to force during the rotation process, there is a lot of residue in the mixing and kneading part after use, which is not convenient for cleaning.

[0003] In view of the defects of the above-mentioned existing stirring and kneading parts, the inventor has actively carried out research and innovation based on his rich practical experience and professional knowledge in designing and manufacturing such products for many years, in order to create a new device with better liquid-powder stirring and kneading effect, making it more practical. After continuous research and design, repeated experiments to make samples and continuous optimization, he finally created the present invention which is truly worth using. Utility Model Content

[0004] The utility model overcomes the shortcomings of the prior art and provides an involute liquid-powder kneading spiral rod and a kneading device, which solves the problems that the current stirring and kneading parts are inconvenient to clean and the stirring and kneading effect of the liquid-powder is not ideal.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions.

[0006] An involute liquid-powder kneading spiral rod comprises a kneading rod, which is a round rod-shaped structure. A middle spiral kneading structure is fixedly arranged in the middle of the outer cylindrical surface of the kneading rod. The middle spiral kneading structure is spirally coiled and fixed on the outer cylindrical surface of the kneading rod. A plurality of notches are arranged at the outer edge of each pitch layer of the middle spiral kneading structure. The inner wall edges on both sides of the notch on the middle spiral kneading structure are both involute structures. The rotation direction of the involute structures on the inner walls on both sides of the notch remains the same as that of the middle spiral kneading structure.

[0007] Furthermore, the notch on each pitch layer of the middle spiral kneading structure does not overlap with the notch on the previous pitch layer along the kneading axis, that is, from the notch of the next pitch layer along the axis of the kneading rod, what can be seen is the entity of the previous pitch layer, but the notch on the previous pitch layer cannot be seen.

[0008] Furthermore, an upper groove and a lower groove are respectively provided on the upper surface and the lower surface of the central spiral kneading structure. The lower groove is an arc-shaped groove opening downward, and the upper groove is an arc-shaped groove opening upward, and both the upper groove and the lower groove extend synchronously with the central spiral kneading structure.

[0009] Furthermore, a plurality of involute kneading structures are arranged on the outer cylindrical surface of the kneading rod below the middle spiral kneading structure, and the plurality of involute kneading structures are arranged in a circular array along the axis of the kneading rod; the extension direction of the involute kneading structure is opposite to the spiral rotation direction of the middle spiral kneading structure, and the height of the involute kneading structure gradually decreases along the extension direction; and the radial width of the involute kneading structure gradually narrows along the extension direction, and the outer edge of the involute kneading structure, viewed along the axial direction of the kneading rod, is an involute structure.

[0010] Furthermore, the spacing between two adjacent involute kneading structures forms a material transfer channel between the two adjacent involute kneading structures, and a notch of the middle spiral kneading structure is provided above the material transfer channel between any two adjacent involute kneading structures, and the notch of the middle spiral kneading structure coincides with the projection of the material transfer channel between the two adjacent involute kneading structures along the axis direction of the kneading rod.

[0011] Furthermore, a spiral upper spiral kneading structure is provided on the outer cylindrical surface of the kneading rod above the middle spiral kneading structure. The upper spiral structure has the same rotation direction as the middle spiral kneading structure. The upper and lower surfaces of the upper spiral kneading structure are also provided with upper grooves and lower grooves respectively.

[0012] Furthermore, a spiral lower spiral kneading structure is provided on the outer cylindrical surface of the kneading rod below the involute kneading structure, and the spiral direction of the lower spiral kneading structure is the same as that of the upper spiral kneading structure; upper grooves and lower grooves are also provided on the upper surface and lower surface of the lower spiral kneading structure respectively.

[0013] Furthermore, the kneading rod includes a large diameter section, a conical section, and a small diameter section which are arranged in sequence from top to bottom. The diameter of the large diameter section is larger than the diameter of the small diameter section. The large diameter section and the small diameter section are connected by the conical section. The conical section is a conical structure that is thick at the top and thin at the bottom. The upper spiral kneading structure and the middle spiral kneading structure are arranged at the large diameter section of the kneading rod, the involute kneading structure is arranged at the conical section of the kneading rod, and the lower spiral kneading structure is arranged at the small diameter section of the kneading rod.

[0014] Furthermore, an internal threaded hole is provided at the center of the upper end surface of the kneading rod, and the kneading rod is connected to the driving component through the internal threaded hole.

[0015] Furthermore, it includes a distributor, a linkage shaft, and a variable diameter silo; the interior of the variable diameter silo includes a large diameter cavity, a small diameter cavity, and a tapered cavity, the inner diameter of the large diameter cavity is larger than the inner diameter of the small diameter cavity, the large diameter cavity and the small diameter cavity are connected by the tapered cavity, and the tapered cavity is a tapered structure with a thick upper part and a thin lower part; the large diameter section of the kneading rod is arranged inside the large diameter cavity of the variable diameter silo, the small diameter section of the kneading rod is arranged inside the small diameter cavity of the variable diameter silo, and the tapered surface section of the kneading rod is arranged inside the tapered cavity of the variable diameter silo;

[0016] The lower opening of the distributor is threadedly connected to the upper opening of the variable-diameter silo; the lower end of the linkage shaft is threadedly connected to the internal threaded hole at the upper end of the kneading rod, a hollow cavity is arranged inside the linkage shaft, a surface hole is arranged at the lower end of the hollow cavity, a circle of rotating blades is fixedly arranged at the lower end of the outer cylindrical surface of the linkage shaft, a water nozzle is fixedly arranged inside the distributor, and the spray direction of the water nozzle is vertically downward toward the inside of the variable-diameter silo; a water supply pipe is arranged at the material transfer channel outside the water nozzle.

[0017] The beneficial effects of the utility model compared with the prior art are:

[0018] The utility model has a simple structure. By arranging an anti-backflow structure on the upper spiral kneading structure, backflow leakage is avoided after the upper spiral kneading structure is subjected to force during the rotation process, and the problem of much residue in the stirring and kneading part and difficulty in cleaning is fundamentally solved. By arranging a groove on the upper surface of the upper spiral kneading structure, liquid falls into the groove and rebounds to the periphery, so that the liquid and powder are mixed more evenly.

[0019] By setting a central spiral kneading structure, the flocculent liquid-powder mixture is kneaded to improve the flexibility of the dough. By setting a notch on the central spiral kneading structure, the purpose is to make the liquid-powder mixture in a lump constantly switch between large and small spaces, and the flexibility of the liquid-powder mixture in a lump is further improved through repeated kneading. By setting the notch on the last layer of the central spiral kneading structure above the material transfer channel of the involute kneading structure, when the toughness of the liquid-powder mixture in a lump does not meet the requirements, the liquid-powder mixture in a lump will pass through the notch and enter the central spiral kneading structure again to be kneaded, thereby ensuring the toughness of the final liquid-powder mixture in a lump. By setting the involute kneading structure, the liquid-powder mixed dough can finally become more delicate, chewy, soft and elastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0021] Figure 1 is a three-dimensional schematic diagram of embodiment 1;

[0022] Figure 2 is a front view of the first embodiment;

[0023] Figure 3 is a three-dimensional schematic diagram of embodiment 2;

[0024] Figure 4 is a front view of the second embodiment;

[0025] Figure 5 is a three-dimensional schematic diagram of embodiment 3;

[0026] Figure 6 is a front view of the third embodiment;

[0027] Figure 7 It is a front view of the fourth embodiment and the fifth embodiment;

[0028] Figure 8 It is a three-dimensional schematic diagram of the fourth embodiment and the fifth embodiment;

[0029] Fig. 9 is a front cross-sectional view of the fourth embodiment and the fifth embodiment;

[0030] Fig.10 yes Fig. 9 A local enlarged schematic diagram of the middle A;

[0031] Fig.11 is a structural schematic diagram of Embodiment 6;

[0032] Among them, 1 is a kneading rod, 2 is a middle spiral kneading structure, 3 is a lower groove, 4 is an upper groove, 5 is a notch, 6 is an involute kneading structure, 7 is a material passing channel, 8 is an upper spiral kneading structure, 9 is a lower spiral kneading structure, 10 is a distributor, 11 is a variable diameter silo, 12 is a linkage shaft, 13 is a surface hole, 14 is a rotating blade, 15 is a water nozzle, and 16 is a water supply pipe. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail in combination with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The technical solution of the present invention is described in detail below in combination with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0034] Embodiment 1

[0035] like Figure 1—2, this embodiment provides an involute liquid-powder kneading spiral rod, including a kneading rod 1, wherein the kneading rod 1 is a vertically arranged round rod-shaped structure, and an internal threaded hole is arranged at the center of the upper end surface of the kneading rod 1, and the kneading rod 1 is connected to a driving component through the internal threaded hole, and the kneading rod 1 is driven to rotate by the driving component.

[0036] A central spiral kneading structure 2 is fixedly arranged in the middle of the outer cylindrical surface of the kneading rod 1 .

[0037] The middle spiral kneading structure 2 is spirally wound and fixed on the outer cylindrical surface of the kneading rod 1, and an upper groove 4 and a lower groove 3 are respectively provided on the upper surface and the lower surface of the middle spiral kneading structure 2. The lower groove 3 is an arc-shaped groove opening downward, and the upper groove 4 is an arc-shaped groove opening upward, and the upper groove 4 and the lower groove 3 both extend synchronously with the middle spiral kneading structure 2.

[0038] A plurality of notches 5 are arranged at the outer edge of each pitch layer of the middle spiral kneading structure 2, and the inner wall edges on both sides of the notches 5 on the middle spiral kneading structure 2 are involute structures, and the involute structure on both sides of the inner wall of the notches 5 is the same as the hand direction of the middle spiral kneading structure 2. The notches 5 on each pitch layer of the middle spiral kneading structure 2 do not overlap with the notches 5 on the previous pitch layer along the axial direction of kneading, that is, what can be seen from the notches 5 of the next pitch layer along the axis of the kneading rod 1 is the entity of the previous pitch layer, and the notches 5 on the previous pitch layer cannot be seen. The purpose of this arrangement is to allow the liquid-powder mixture in a lump to be blocked by the spiral structure of the upper pitch layer when it is squeezed from the notches 5 of the next pitch layer into the space formed by the spiral structures of the adjacent upper and lower pitch layers, and the liquid-powder mixture can be pushed down at the same time.

[0039] Embodiment 2

[0040] like Figure 3 , 4 As shown, this embodiment provides an involute liquid-powder kneading spiral rod. This embodiment is based on the first embodiment and is further provided with the following structure:

[0041] An involute kneading structure 6 is also provided on the outer cylindrical surface of the kneading rod 1 below the middle spiral kneading structure 2. The number of the involute kneading structures 6 is multiple, and the multiple involute kneading structures 6 are arranged in a circular array along the axis of the kneading rod 1. The extension direction of the involute kneading structure 6 is opposite to the spiral rotation direction of the middle spiral kneading structure 2, and the height of the involute kneading structure 6 along the extension direction gradually decreases; and the radial width of the involute kneading structure 6 gradually narrows along the extension direction. When viewed along the axial direction of the kneading rod 1, the outer edge of the involute kneading structure 6 is an involute structure. The spacing between two adjacent involute kneading structures 6 forms a material transfer channel 7 between the two adjacent involute kneading structures 6. A notch 5 of the middle spiral kneading structure 2 is arranged above the material transfer channel 7 between any two adjacent involute kneading structures 6. The notch 5 of the middle spiral kneading structure 2 coincides with the projection of the material transfer channel 7 between the two adjacent involute kneading structures 6 along the axis direction of the kneading rod 1. The purpose of such arrangement is to knead the liquid-powder mixture through the middle spiral kneading structure 2 and then integrate and knead it again, so that the liquid-powder mixture is more delicate, strong and elastic. At the same time, the kneaded material enters the lower side through the material transfer channel 7 of the involute kneading structure 6 under the rotation and accumulation action of the middle spiral kneading structure 2.

[0042] Embodiment 3

[0043] like Figure 5 , 6 As shown, this embodiment provides an involute liquid-powder kneading spiral rod. This embodiment is based on the second embodiment and is further provided with the following structure:

[0044] A spiral upper spiral kneading structure 8 is also provided on the outer cylindrical surface of the kneading rod 1 above the middle spiral kneading structure 2 . The upper spiral structure has the same rotation direction as the middle spiral kneading structure 2 .

[0045] The lower surface of the upper spiral kneading structure 8 is provided with a lower groove 3, which is an arc-shaped groove opening downward. The lower groove 3 extends synchronously with the upper spiral kneading structure 8. The lower groove 3 is provided to prevent the liquid-powder mixture from flowing back from the bottom to the top of the upper spiral kneading structure 8.

[0046] An upper groove 4 is provided on the upper surface of the upper spiral structure. The upper groove 4 is an arc-shaped groove opening upward. The upper groove 4 extends synchronously with the upper spiral kneading structure 8. After the liquid falls into the upper groove 4, it rebounds to the periphery, which can make the liquid-powder mixture more uniform.

[0047] Embodiment 4

[0048] like Figure 7 , 8As shown in , 9 and 10, this embodiment provides an involute liquid-powder kneading spiral rod. This embodiment is based on the third embodiment and further has the following structure:

[0049] A spiral lower spiral kneading structure 9 is also provided on the outer cylindrical surface of the kneading rod 1 below the involute kneading structure 6, and the spiral direction of the lower spiral kneading structure 9 is the same as that of the upper spiral kneading structure 8. An upper groove 4 and a lower groove 3 are also provided on the upper surface and the lower surface of the lower spiral kneading structure 9, respectively.

[0050] Embodiment 5

[0051] like Figure 7 , 8 As shown in , 9 and 10, this embodiment provides an involute liquid-powder kneading spiral rod. This embodiment is based on the fourth embodiment and further has the following structure:

[0052] The kneading rod 1 includes a large diameter section, a conical section, and a small diameter section arranged in sequence from top to bottom. The diameter of the large diameter section is larger than that of the small diameter section. The large diameter section and the small diameter section are connected by the conical section. The conical section is a conical structure with a thick upper part and a thin lower part.

[0053] The upper spiral kneading structure 8 and the middle spiral kneading structure 2 are arranged at the large diameter section of the kneading rod 1 , the involute kneading structure 6 is arranged at the conical section of the kneading rod 1 , and the lower spiral kneading structure 9 is arranged at the small diameter section of the kneading rod 1 .

[0054] The maximum outer diameters of the upper spiral kneading structure 8 and the middle spiral kneading structure 2 remain the same, the maximum outer diameter of the lower spiral kneading structure 9 is smaller than the maximum outer diameter of the upper spiral kneading structure 8, and the maximum outer diameter of the involute kneading structure 6 is between the maximum outer diameter of the lower spiral kneading structure 9 and the maximum outer diameter of the upper spiral kneading structure 8.

[0055] Embodiment 6

[0056] like Fig.11 As shown, this embodiment provides a kneading device, including the liquid-powder mixing spiral kneading rod 1 in the above-mentioned embodiment 5, and specifically also includes the following structure:

[0057] The kneading device includes a distributor 10 , a linkage shaft 12 , and a variable diameter silo 11 .

[0058] The interior of the variable diameter silo 11 includes a large diameter cavity, a small diameter cavity, and a conical cavity. The inner diameter of the large diameter cavity is larger than the inner diameter of the small diameter cavity. The large diameter cavity and the small diameter cavity are connected by the conical cavity, and the conical cavity is a conical structure that is thick at the top and thin at the bottom.

[0059] The large diameter section of the kneading rod 1 is arranged inside the large diameter cavity of the variable diameter silo 11, the small diameter section of the kneading rod 1 is arranged inside the small diameter cavity of the variable diameter silo 11, and the conical section of the kneading rod 1 is arranged inside the conical cavity of the variable diameter silo 11.

[0060] The distributor 10 is a circular cylindrical structure with upper and lower ends open, and the lower opening of the distributor 10 is threadedly connected to the upper opening of the variable diameter silo 11 .

[0061] The linkage shaft 12 is a vertically arranged circular rod-shaped structure. The linkage shaft 12 is arranged at the axis of the distributor 10. The lower end of the linkage shaft 12 is screwed to the internal threaded hole at the upper end of the kneading rod 1. A hollow cavity is arranged inside the linkage shaft 12. An outlet hole 13 is arranged at the lower end of the hollow cavity. The hollow cavity is connected to the outside of the linkage shaft 12 through the outlet hole 13. The flour inside the hollow cavity is led out to the inside of the distributor 10 through the outlet hole 13. A circle of rotating blades 14 is fixedly arranged at the lower end of the outer cylindrical surface of the linkage shaft 12. The flour output from the outlet hole 13 is led out to the inside of the variable-diameter silo 11 through the rotating blades 14. A water nozzle 15 is fixedly arranged inside the distributor 10. The spraying direction of the water nozzle 15 is vertically downward toward the inside of the variable-diameter silo 11. A water supply pipe 16 is arranged at the material passing channel 7 outside the water nozzle 15. Water is supplied to the water nozzle 15 through the water supply pipe 16.

[0062] The working principle of the kneading device is:

[0063] The linkage shaft 12 is driven to rotate by the motor, thereby driving the kneading rod 1 to rotate. When the flour reaches the bottom end of the hollow cavity of the linkage shaft 12, it is output to the inside of the distributor 10 through the surface hole 13 opened at the bottom thereof, and the rotating blades 14 drive the flour to move downward to the inside of the variable diameter silo 11 in an evenly distributed manner. At the same time, the water in the water supply pipe 16 is output to the water nozzle 15. The flour and water simultaneously enter the upper part of the interior of the variable diameter silo 11 and enter the upper spiral kneading structure 8. After the flour and water fall into the upper groove 4 of the upper spiral kneading structure 8, the water falls into the upper groove 4 and then rebounds to the periphery, so that the water and flour are mixed more evenly. After being stirred by the upper spiral kneading structure 8, the flour and water form a flocculent mixture. Technicians in the field of mechanics should all know that the screw propeller itself pushes the material forward in a rotating motion. Therefore, as the kneading rod 1 rotates, after the kneading rod 1 rotates one circle, the uniformly mixed flocculent water surface mixture is pushed to the bottom of the upper spiral kneading structure 8. The lower surface of the upper spiral kneading structure 8 is provided with a lower groove 3, the purpose of which is that with the rotating motion, the flocculent mixture mixed on the water surface will continue to accumulate, but the mixed material is prevented from flowing back upward under the action of the lower groove 3, overcoming the defect of the original technology - leakage phenomenon, and ensuring the stable operation of the machine.

[0064] Under the action of the upper spiral kneading structure 8, the flocculent mixture moves downward steadily and enters the middle spiral kneading structure 2. At this stage, the flocculent mixture is continuously kneaded into dough. The dough that has been kneaded for many times enters the involute kneading structure 6, where the formed dough is further kneaded to form a chewy dough. The dough is then squeezed into the lower spiral kneading structure 9 and extruded in sequence to obtain a delicate, soft and chewy dough. If a noodle die is fixedly connected to the lower end outlet of the variable diameter silo 11, noodles can be produced.

[0065] The specific kneading principle of the middle spiral kneading structure 2 is as follows: the middle spiral kneading structure 2 and the variable diameter silo 11 form a spiral multi-layer annular space. Since the middle spiral kneading structure 2 is composed of multiple layers of spirals with the same rotation direction, each spiral layer is provided with a notch 5. When the flocculent mixture fills the closed annular space composed of the middle spiral kneading structure 2 and the variable diameter silo 11, under the driving and rotating action of the kneading rod 1, all the notches 5 on the outer edge of the multi-layer spiral belt of the middle spiral kneading structure 2 will be kneaded with the notches 5 in the middle spiral kneading structure 2. With the rotation of the upper spiral kneading structure 8, the flocculent mixture is continuously transported downward, and the dough kneaded by the middle spiral kneading structure 2 enters the lower spiral kneading structure 9 through the material transfer channel 7 of the involute kneading structure 6, and the liquid powder kneading process is completed.

[0066] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An involute liquid-powder kneading screw, characterized in that: The invention comprises a kneading rod (1), wherein the kneading rod (1) is a round rod-shaped structure, wherein a middle spiral kneading structure (2) is fixedly arranged in the middle of the outer cylindrical surface of the kneading rod (1), wherein the middle spiral kneading structure (2) is spirally wound and fixed on the outer cylindrical surface of the kneading rod (1), wherein a plurality of notches (5) are arranged at the outer edge of each pitch layer of the middle spiral kneading structure (2), wherein the inner wall edges on both sides of the notches (5) on the middle spiral kneading structure (2) are both involute structures, and the rotation direction of the involute structures on the inner walls on both sides of the notches (5) is the same as the rotation direction of the middle spiral kneading structure (2).

2. The involute liquid-powder kneading screw according to claim 1, characterized in that: The notch (5) on each pitch layer of the middle spiral kneading structure (2) does not overlap with the notch (5) on the previous pitch layer along the kneading axis, that is, when viewed from the notch (5) of the next pitch layer along the axis of the kneading rod (1), the entity of the previous pitch layer is visible, while the notch (5) on the previous pitch layer cannot be seen.

3. The involute liquid-powder kneading screw according to claim 1, characterized in that: An upper groove (4) and a lower groove (3) are respectively provided on the upper surface and the lower surface of the middle spiral kneading structure (2); the lower groove (3) is an arc-shaped groove opening downward, and the upper groove (4) is an arc-shaped groove opening upward; the upper groove (4) and the lower groove (3) both extend synchronously with the middle spiral kneading structure (2).

4. The involute liquid-powder kneading screw according to claim 1, characterized in that: A plurality of involute kneading structures (6) are further arranged on the outer cylindrical surface of the kneading rod (1) below the middle spiral kneading structure (2). The plurality of involute kneading structures (6) are arranged in a circular array along the axis of the kneading rod (1); the extension direction of the involute kneading structure (6) is opposite to the spiral rotation direction of the middle spiral kneading structure (2); the height of the involute kneading structure (6) gradually decreases along the extension direction; and the radial width of the involute kneading structure (6) gradually narrows along the extension direction. When viewed along the axial direction of the kneading rod (1), the outer edge of the involute kneading structure (6) is an involute structure.

5. The involute liquid-powder kneading screw according to claim 4, characterized in that: The spacing between two adjacent involute kneading structures (6) forms a material transfer channel (7) between the two adjacent involute kneading structures (6), and a notch (5) of the middle spiral kneading structure (2) is provided above the material transfer channel (7) between any two adjacent involute kneading structures (6), and the notch (5) of the middle spiral kneading structure (2) coincides with the projection of the material transfer channel (7) between the two adjacent involute kneading structures (6) along the axis direction of the kneading rod (1).

6. The involute liquid-powder kneading screw according to claim 4, characterized in that: A spiral upper spiral kneading structure (8) is also provided on the outer cylindrical surface of the kneading rod (1) above the middle spiral kneading structure (2). The upper spiral structure has the same rotation direction as the middle spiral kneading structure (2). The upper and lower surfaces of the upper spiral kneading structure (8) are also provided with an upper groove (4) and a lower groove (3), respectively.

7. The involute liquid-powder kneading screw according to claim 6, characterized in that: A spiral lower spiral kneading structure (9) is also provided on the outer cylindrical surface of the kneading rod (1) below the involute kneading structure (6), and the spiral direction of the lower spiral kneading structure (9) is the same as that of the upper spiral kneading structure (8); an upper groove (4) and a lower groove (3) are also provided on the upper surface and the lower surface of the lower spiral kneading structure (9), respectively.

8. The involute liquid-powder kneading screw according to claim 7, characterized in that: The kneading rod (1) comprises a large diameter section, a conical section, and a small diameter section which are arranged in sequence from top to bottom. The diameter of the large diameter section is larger than the diameter of the small diameter section. The large diameter section and the small diameter section are connected via the conical section. The conical section is a conical structure with a thickness at the top and a thickness at the bottom. The upper spiral kneading structure (8) and the middle spiral kneading structure (2) are arranged at the large diameter section of the kneading rod (1), the involute kneading structure (6) is arranged at the conical section of the kneading rod (1), and the lower spiral kneading structure (9) is arranged at the small diameter section of the kneading rod (1).

9. The involute liquid-powder kneading screw according to any one of claims 1 to 8, characterized in that: An internal threaded hole is provided at the center of the upper end surface of the kneading rod (1), and the kneading rod (1) is connected to the driving component via the internal threaded hole.

10. A kneading device, comprising the involute liquid-powder kneading screw according to claim 9, characterized in that: It comprises a distributor (10), a linkage shaft (12), and a variable diameter silo (11); the interior of the variable diameter silo (11) comprises a large diameter cavity, a small diameter cavity, and a conical cavity; the inner diameter of the large diameter cavity is greater than the inner diameter of the small diameter cavity; the large diameter cavity and the small diameter cavity are connected via the conical cavity; the conical cavity is a conical structure with a thick upper part and a thin lower part; the large diameter section of the kneading rod (1) is arranged inside the large diameter cavity of the variable diameter silo (11); the small diameter section of the kneading rod (1) is arranged inside the small diameter cavity of the variable diameter silo (11); and the conical surface section of the kneading rod (1) is arranged inside the conical cavity of the variable diameter silo (11); The lower end opening of the distributor (10) is threadedly connected to the upper end opening of the variable diameter silo (11); the lower end of the linkage shaft (12) is threadedly connected to the internal threaded hole at the upper end of the kneading rod (1); a hollow cavity is provided inside the linkage shaft (12); a surface hole (13) is provided at the lower end of the hollow cavity; a circle of rotating blades (14) is fixedly provided at the lower end of the outer cylindrical surface of the linkage shaft (12); a water nozzle (15) is fixedly provided inside the distributor (10); the spraying direction of the water nozzle (15) is vertically downward toward the inside of the variable diameter silo (11); and a water supply pipe (16) is provided at the material passing channel (7) outside the water nozzle (15).

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