Anti-blocking stirring structure for food in a drum of a tumbler

Abstract

The application discloses the technical field of food processing machinery, in particular to a food anti-blocking stirring structure in a cylinder of a tumbling machine, which comprises a rack, a plurality of support rods arranged on one side of the rack, a tumbling barrel rotatably arranged between the two side walls of the rack, a driving motor arranged on the outer wall of the rack on the side connected with the support rods, and the output shaft of the driving motor is in transmission connection with the tumbling barrel, an irregular convex ring arranged between the end portions of the plurality of support rods and suspended on the outer side of the tumbling barrel, the inner ring surface of the irregular convex ring close to the tumbling barrel is a non-equal-diameter irregular streamline cam curve surface, and a transmission assembly movably arranged on the side wall of the tumbling barrel and the irregular convex ring flush position. The irregular convex ring with the non-equal-diameter irregular streamline cam curve surface is arranged on the outer side of the tumbling barrel, and is matched with the transmission assembly and the floating blade, so that the irregular convex ring periodically extrudes the transmission assembly to generate radial displacement during the rotation of the tumbling barrel.

Description

Technical Field

[0001] This application relates to the field of food processing machinery technology, specifically to an anti-caking stirring structure for food inside a tumbler. Background Technology

[0002] In the marinating and seasoning processes of meat products and other foods, tumbling machines are a widely used and crucial piece of equipment. Through the rotation of the tumbling drum, meat pieces and other foods collide, rub, and fall against each other within the drum, thereby accelerating the penetration and absorption of the marinade, and improving the water retention and yield of the meat.

[0003] Currently, most tumbling machines on the market use fixed mixing blades or guide plates inside. During the rotation of the tumbling drum, these blades and guide plates rotate synchronously with the drum body, relying on gravity to carry the material at the bottom to a higher position and then let it fall freely, or to simply push the material by a fixed plate angle.

[0004] However, when existing tumblers tumble certain foods rich in protein or with sticky seasonings for extended periods, the food inside the drum easily sticks together and clumps together into large lumps. Since the existing fixed blades can only tumble the material as a whole, they cannot actively shear and break up the already formed lumps. As a result, the material inside the lumps cannot fully contact the marinade, affecting the uniformity of product mixing and reducing product quality. Summary of the Invention

[0005] The purpose of this application is to provide an anti-caking mixing structure for food inside a tumbler, so as to solve the problems of clumping and uneven mixing during the tumbling process mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a food anti-caking stirring structure inside a tumbler, comprising a frame, with multiple support rods arranged on one side of the frame; a tumbler drum rotatably disposed between the two side walls of the frame; a drive motor disposed on the outer wall of the frame connected to the support rods, and the output shaft of the drive motor being drively connected to the tumbler drum; an irregular convex ring disposed between the ends of the multiple support rods and suspended on the outer side of the tumbler drum, the inner ring surface of the irregular convex ring near the tumbler drum being a non-uniform diameter irregular streamlined cam curve surface; and a transmission assembly movably disposed flush with the tumbler drum and the irregular convex ring. Multiple sets of transmission components are arranged on the side wall of the position and in a circumferential array along the tumbling drum. The end of the transmission component located on the outer side of the tumbling drum is always in contact with the inner ring surface of the irregular convex ring. Floating blades are rotatably disposed between the inner walls of both ends of the tumbling drum, and one end of the floating blade is hinged to the end of the transmission component located inside the tumbling drum. The irregular convex ring squeezes the transmission component to generate displacement when the tumbling drum rotates, thereby driving the floating blades to reciprocate and rotate. A central sliding shaft is movably disposed at the central axis of the inner walls of both ends of the tumbling drum. The central sliding shaft is connected to the floating blades and is squeezed by the floating blades when they rotate, resulting in axial reciprocating displacement.

[0007] In one embodiment, the tumbling drum is provided with a connecting shaft that passes through the side wall of the frame on the same side and is connected to the drive motor at one end near the support rod, and a limiting ring that fits into the top of the frame is provided on the outer wall of the other end of the tumbling drum.

[0008] In one embodiment, the inner walls of both ends of the tumbling drum are provided with positioning shafts for axially limiting the two ends of the floating blades, and spline rods for circumferentially limiting the two ends of the central sliding shaft.

[0009] In one embodiment, the transmission assembly includes a push rod penetrating the side wall of the tumbling drum. A U-shaped seat is provided at the end of the push rod located outside the tumbling drum. A roller that rolls and rolls against the inner surface of an irregular convex ring is rotatably connected between the inner walls of the U-shaped seat. A rectangular connecting rod is provided at the other end of the push rod located inside the tumbling drum. A support spring sleeved on the outside of the push rod is connected between the U-shaped seat and the opposite side wall of the tumbling drum. A sealing sleeve that seals against the inner wall of the perforated part of the tumbling drum is also sleeved on the outer wall of the push rod.

[0010] In one embodiment, the floating blade includes a blade body, and both ends of the blade body are provided with connecting sleeves that are rotatably connected to the positioning shaft. A hinge and a pressing block are integrally constructed on the outer wall of one side of the connecting sleeve, and the end of the hinge is hingedly connected to the end of the connecting rod.

[0011] In one embodiment, the blade body has an internal cavity, and the outer wall of the material-facing surface of the blade body has multiple conical holes communicating with the cavity, which are used to generate local shearing and material flow disturbance to the clumped food when the blade body is flipped.

[0012] In one embodiment, both ends of the central sliding shaft are provided with sliding grooves that slide with the spline rod, and a return spring is provided at the end of the central sliding shaft near the connecting shaft that is connected to the inner wall of the end of the tumbling drum.

[0013] In one embodiment, an annular groove that mates with the extrusion block is provided on the outer wall of the central sliding shaft. One side wall of the annular groove is provided with an extrusion protrusion that abuts against and fits against the extrusion block, and the sides of the extrusion protrusion and the extrusion block that fit against each other are corresponding arc-shaped slopes.

[0014] In one embodiment, a pawl is provided at the end of the central sliding shaft away from the return spring, and a ratchet is provided on the inner wall of the same side end of the tumbling drum to cooperate with the pawl. A movable gap is reserved between the pawl and the ratchet for the axial fine adjustment of the central sliding shaft. The axial displacement of the central sliding shaft causes the pawl and the ratchet to periodically engage and lock or disengage, thereby changing the local instantaneous impact vibration inside the tumbling drum.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] 1) This invention features an irregular convex ring with a non-uniform diameter, streamlined cam curve surface on the outside of the tumbling drum. In conjunction with a transmission assembly and floating blades, the irregular convex ring periodically squeezes the transmission assembly during the rotation of the tumbling drum, generating radial displacement. This mechanically drives the internal floating blades to perform reciprocating tumbling motion. This dynamic tumbling breaks the traditional single stirring trajectory of fixed blades, enabling multi-angle and deep tumbling and peeling of food in the tumbling drum. This fundamentally reduces the accumulation and clumping of food on the drum wall and at the root of the blades, significantly improving the uniformity of tumbling.

[0017] 2) In this invention, the flipping of the floating blades is achieved through the interaction between its own extrusion block and the annular groove of the central sliding shaft and the extrusion protrusion with an arc-shaped inclined surface. This cleverly transforms the circumferential flipping motion of the blades into the axial reciprocating sliding motion of the central sliding shaft. With the synergistic effect of the return spring, the entire stirring system forms a multi-dimensional mechanical motion linkage. This axial reciprocating motion not only enhances the stirring effect along the axial direction, but also further disrupts the tendency of material to accumulate axially, thus strengthening the fullness of product mixing.

[0018] 3) The central sliding shaft of this invention is provided with a pawl at its end, which cooperates with the ratchet on the inner wall of the tumbling drum. When the central sliding shaft is axially displaced, the pawl and the ratchet periodically "engage and lock" and "disengage" using the movable gap. The instantaneous locking and releasing will generate high-frequency, micro-amplitude local instantaneous impact vibration, which is transmitted to the entire material area through the central sliding shaft and floating blades. This instantaneous impact vibration can produce an effect similar to mechanical knocking, causing the sticky food adhering to the blades and the inner wall of the drum to fall off instantly, further reducing the product's anti-caking and self-cleaning effects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this application;

[0020] Figure 2 This is a cross-sectional view of the structure in this application;

[0021] Figure 3 This is a cross-sectional schematic diagram of the mating structure between the irregular convex ring and the tumbling drum in this application;

[0022] Figure 4 This is a schematic diagram of the internal structure of the tumbling drum in this application;

[0023] Figure 5 This is a schematic diagram of the internal structure of the tumbling drum in this application;

[0024] Figure 6 This is an exploded view of the structure in this application showing the partial fit between the central sliding shaft and the floating blade.

[0025] Figure 7 This application includes a cross-sectional view of the floating blade structure.

[0026] In the diagram: 1. Frame; 101. Support rod; 2. Tumbling drum; 201. Connecting shaft; 202. Limiting ring; 203. Positioning shaft; 204. Spline rod; 3. Drive motor; 4. Irregular convex ring; 5. Transmission assembly; 501. Push rod; 502. U-shaped seat; 503. Roller; 504. Connecting rod; 505. Support spring; 506. Sealing sleeve; 6. Floating blade; 601. Blade body; 602. Connecting sleeve; 603. Hinge; 604. Extrusion block; 605. Cavity; 606. Tapered hole; 7. Central sliding shaft; 701. Slide groove; 702. Return spring; 703. Annular groove; 704. Extrusion protrusion. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Example:

[0030] Please see Figures 1-6 This application provides a technical solution: a food anti-caking stirring structure inside a tumbler, comprising a frame 1, a tumbler drum 2, a drive motor 3, an irregular convex ring 4, a transmission assembly 5 in multiple circumferential arrays, floating blades 6, and a central sliding shaft 7.

[0031] The frame 1 serves as the overall load-bearing base of this device. It is made of welded carbon steel and has an overall portal frame structure to ensure load-bearing stability. Multiple evenly distributed support rods 101 are vertically fixed on one side of the frame 1. These support rods 101 are cylindrical steel structures, with all rods having the same height and length and flush ends. They are used to suspend and fix the irregular convex ring 4, maintaining a fixed distance between the irregular convex ring 4 and the outer wall of the tumbling drum 2, preventing direct contact and avoiding motion interference.

[0032] like Figures 1-2 As shown, the tumbling drum 2 is a cylindrical hollow food tumbling cavity. Both ends are rotatably assembled between the two side walls of the frame 1 through bearings. It can rotate at a constant speed around its own central axis to realize the basic tumbling operation of food materials.

[0033] Furthermore, a connecting shaft 201 is fixedly welded to the center of one end of the tumbling drum 2 near the support rod 101. The connecting shaft 201 passes through the side wall of the frame 1 on the same side, and its protruding end is rigidly connected to the output shaft of the drive motor 3 through a coupling. The drive motor 3 provides the power for the rotation of the tumbling drum 2. A limit ring 202 is fixedly fitted on the outer wall of the other end of the tumbling drum 2 away from the drive motor 3. The limit ring 202 is fitted and locked inside the limit groove at the top of the frame 1, which can radially limit the end of the tumbling drum 2, preventing radial runout and offset when the tumbling drum 2 rotates at high speed, and improving the stability of equipment operation.

[0034] Meanwhile, positioning shafts 203 and splined rods 204 are symmetrically fixedly installed on the inner walls of both ends of the tumbling drum 2. The two positioning shafts 203 are coaxially and symmetrically arranged to rotate the two ends of the floating blades 6, realizing the flipping positioning and axial limitation of the floating blades 6, and preventing the floating blades 6 from axially moving during operation; the splined rods 204 are arranged parallel to the central axis of the tumbling drum 2, and are used to circumferentially limit the central sliding shaft 7, ensuring that the central sliding shaft 7 can only make axial linear sliding and cannot rotate circumferentially with the tumbling drum 2.

[0035] In addition, a ratchet 205 is fixedly installed on the inner wall of the same side of the tumbling drum 2 away from the drive motor 3. The ratchet 205 is coaxially arranged with the tumbling drum 2, providing a structural basis for subsequent cooperation with the pawl 705 at the end of the central sliding shaft 7.

[0036] like Figures 1-2 As shown, the drive motor 3 is bolted to the outer wall of the frame 1 on one side of the connecting support rod 101. It is a variable frequency speed control motor, which can adjust the tumbling speed according to the type of food material. The output shaft of the drive motor 3 is horizontally set and coaxially connected to the connecting shaft 201 of the tumbling drum 2. During operation, the drive motor 3 drives the connecting shaft 201 and the entire tumbling drum 2 to rotate continuously around its own central axis, providing basic motion power for the overall stirring and anti-caking structure.

[0037] like Figures 1-3 As shown, the irregular convex ring 4 is fixedly installed between the ends of multiple support rods 101 and locked in place by bolts. Its position is completely fixed, with no rotation or displacement. The irregular convex ring 4 is suspended on the outside of the tumbling drum 2, without contact with the outer wall of the tumbling drum 2, and its axial position is flush with the transmission assembly 5 on the tumbling drum 2, ensuring that the transmission assembly 5 is always in contact with the inner ring of the irregular convex ring 4 during rotation.

[0038] It should be noted that the inner surface of the irregular convex ring 4 near the tumbling drum 2 is a non-uniform diameter, irregular streamlined cam curve surface, which differs from a conventional circular toroidal surface. This surface has continuous, smooth, undulating arcs. When the tumbling drum 2 drives the transmission component 5 to rotate circumferentially, the undulating surface of the irregular convex ring 4 continuously squeezes and releases the transmission component 5, forcing the transmission component 5 to produce reciprocating inward and outward linear displacements, providing mechanical power for subsequent blade rotation.

[0039] like Figures 2-5 As shown, multiple sets of transmission components 5 are evenly arrayed around the circumference of the tumbling drum 2. Each set of transmission components 5 horizontally penetrates the side wall of the tumbling drum 2, with its inner and outer ends extending to the inside and outside of the tumbling drum 2, respectively. The outer end is always in contact with the inner curved surface of the irregular convex ring 4, and the inner end is hinged to the floating blade 6 for transmission. The specific structure of a single set of transmission components 5 is as follows:

[0040] Furthermore, the transmission assembly 5 includes a push rod 501, which slides through a perforation in the side wall of the tumbling drum 2 and can reciprocate linearly in the radial direction. A U-shaped seat 502 is fixedly installed at the end of the push rod 501 located outside the tumbling drum 2. Rollers 503 are rotatably connected between the inner walls of the two sides of the U-shaped seat 502 via a rotating shaft. The outer curved surface of the roller 503 is always in rolling contact with the streamlined inner curved surface of the irregular convex ring 4, changing sliding friction to rolling friction, reducing equipment wear and operating noise.

[0041] It should be noted that a rectangular cross-section connecting rod 504 is fixedly connected to the end of the push rod 501 located inside the tumbling drum 2. The rectangular structure can improve the stability of the hinged transmission and avoid torsional displacement during transmission. A support spring 505 is connected between the U-shaped seat 502 and the outer wall of the tumbling drum 2. The support spring 505 is sleeved on the outside of the push rod 501 and is in a slightly compressed state under normal conditions. It can continuously provide an outward clamping force to the push rod 501, ensuring that the roller 503 always fits tightly against the irregular convex ring 4 curved surface without any separation or jamming.

[0042] The outer wall of the push rod 501 is also fitted with a sealing sleeve 506. The sealing sleeve 506 is fixedly embedded in the inner wall of the side wall perforation of the tumbling drum 2 and fits tightly with the outer wall of the push rod 501 to achieve sealing protection at the perforation position, preventing the food materials and juice inside the tumbling drum 2 from leaking out, while preventing external dust and impurities from entering the drum and contaminating the materials, and does not affect the reciprocating sliding of the push rod 501.

[0043] like Figure 4 and Figure 7 As shown, the floating blade 6 is mounted on the positioning shaft 203 on the inner wall of both ends of the tumbling drum 2, and can rotate slightly back and forth around the axis of the positioning shaft 203. It is the core component for realizing the mixing and breaking of materials in the drum. The specific structure is detailed as follows:

[0044] The floating blade 6 includes a plate-shaped blade body 601. Connecting sleeves 602 are integrally formed at both ends of the blade body 601. The connecting sleeves 602 are respectively fitted onto the outside of the positioning shafts 203 at both ends of the tumbling drum 2, enabling rotational assembly. The outer wall of each connecting sleeve 602 has an integrally formed hinge 603 and a pressing block 604. The end of the hinge 603 is hinged to the end of the connecting rod 504 of the transmission assembly 5 via a pin.

[0045] During operation, when the push rod 501 is pressed inward by the irregular convex ring 4, it will pull the hinge 603 through the connecting rod 504, causing the entire blade body 601 to rotate around the positioning shaft 203; when the push rod 501 is reset outward under the action of the support spring 505, the blade body 601 will rotate in the opposite direction simultaneously, thereby realizing continuous reciprocating stirring.

[0046] Furthermore, the blade body 601 has a hollow cavity 605 inside, and multiple conical holes 606 are evenly distributed on the outer wall of the blade body 601 facing the material. All conical holes 606 are connected to the internal cavity 605. The conical holes 606 are wider at the outside and narrower at the inside. During the reciprocating stirring process of the blade body 601, on the one hand, they can generate local shearing force on the clumps of food materials, breaking up the lumps; on the other hand, the materials in the barrel can enter and exit the cavity 605 through the conical holes 606, forming local material turbulence and disturbance, completely solving the problem of materials sticking to the barrel wall and accumulating and clumping, and improving the uniformity of stirring.

[0047] like Figures 3-6 As shown, the central sliding shaft 7 is horizontally and movably positioned at the central axis of the inner walls at both ends of the tumbling drum 2. It is in transmission cooperation with the extrusion block 604 of the floating blade 6 and can move axially back and forth under the extrusion action of the tumbling blade 6. The specific assembly and structural details are as follows:

[0048] The two ends of the central sliding shaft 7 are symmetrically provided with sliding grooves 701. The two sliding grooves 701 are respectively slidably engaged with the spline rods 204 at both ends of the tumbling drum 2. The spline limiting structure realizes the movement form of circumferential fixation and axial sliding, preventing the central sliding shaft 7 from rotating with the tumbling drum 2 and ensuring accurate and stable axial displacement.

[0049] It should be noted that a return spring 702 is installed at one end of the central sliding shaft 7 near the connecting shaft 201. The two ends of the return spring 702 are fixedly connected to the end of the central sliding shaft 7 and the inner wall of the end of the tumbling drum 2, respectively. Under normal conditions, it provides a return pulling force to the central sliding shaft 7 to achieve automatic reset after axial displacement.

[0050] It is worth noting that an annular groove 703 is formed on the outer wall of the central sliding shaft 7. One side wall of the annular groove 703 is integrally constructed with a pressing protrusion 704, which corresponds to and cooperates with the pressing block 604 of the floating blade 6. Moreover, the sides of the pressing protrusion 704 and the pressing block 604 that fit together are both matching arc-shaped slopes. The design of the arc-shaped slopes can reduce the jamming resistance of the pressing transmission, and smoothly convert the flipping torque of the floating blade 6 into the axial thrust of the central sliding shaft 7, making the transmission smoother.

[0051] A pawl 705 is fixedly installed at the end of the central sliding shaft 7 away from the return spring 702. The pawl 705 cooperates with the ratchet 205 at the end of the tumbling drum 2. It should be noted that a small axial movement gap is reserved between the pawl 705 and the ratchet 205, and they are not tightly fitted. This gap can meet the small axial fine adjustment requirements of the central sliding shaft 7.

[0052] Working principle: This embodiment provides a food anti-caking stirring structure inside the drum of a tumbler. First, after the equipment is started, the drive motor 3 drives the tumbler drum 2 to rotate at a constant speed. The tumbler drum 2 drives multiple sets of transmission components 5 in a circumferential array to rotate synchronously around the axis. The rollers 503 on the outer side of the transmission components 5 continuously roll along the non-uniform diameter streamlined inner curved surface of the irregular convex ring 4. Due to the limiting effect of the undulation of the curved surface, the push rod 501 continuously generates radial reciprocating sliding, and the support spring 505 synchronously completes the compression and reset actions to ensure the continuity of transmission.

[0053] The reciprocating sliding of push rod 501 pulls hinge 603 through connecting rod 504, driving floating blade 6 to periodically rotate around positioning shaft 203. Blade body 601 stirs and disperses food materials in the barrel in all directions. At the same time, the conical hole 606 on the material receiving surface and cavity 605 form material turbulence, shearing and breaking up agglomerated materials.

[0054] During the flipping process of the floating blade 6, the pressing block 604 at its end continuously presses the pressing protrusion 704 on the central sliding shaft 7. Through the transmission action of the arc-shaped inclined surface, the central sliding shaft 7 is pushed to overcome the elastic force of the return spring 702 and generate axial sliding. When the blade is reset, the return spring 702 pulls the central sliding shaft 7 to reset in the opposite direction, realizing axial reciprocating motion.

[0055] During the axial displacement of the central sliding shaft 7, the pawl 705 at the end and the ratchet 205 periodically engage and disengage: when engaged and locked, the central sliding shaft 7 is instantly positioned, generating an instantaneous rigid impact; when disengaged, the shaft quickly resets, forming an instantaneous vibration; the periodic impact vibration can further disperse material clumps, and together with the tumbling and stirring of the floating blades 6, it provides double protection for the food materials in the bucket to be free of clumps and evenly stirred, greatly improving the quality of tumbling processing.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this application. It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or basic characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this application is defined by the appended claims rather than the foregoing description. Therefore, it is intended to encompass all variations falling within the meaning and scope of equivalents of the claims within this application, and no reference numerals in the claims should be regarded as limiting the scope of the claims.

[0057] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A food anti-caking stirring structure inside the drum of a tumbler, characterized in that: include: The frame (1) has multiple support rods (101) on one side. The tumbling drum (2) is rotatably positioned between the two side walls of the frame (1); The drive motor (3) is installed on the outer wall of the frame (1) connected to the support rod (101), and the output shaft of the drive motor (3) is connected to the tumbling drum (2) in a transmission connection. An irregular convex ring (4) is set between the ends of multiple support rods (101) and suspended on the outside of the tumbling drum (2). The inner ring surface of the irregular convex ring (4) near the tumbling drum (2) is a non-equal diameter irregular streamlined cam curve surface. The transmission assembly (5) is movably set on the side wall of the tumbling drum (2) and the irregular convex ring (4) at the same position, and multiple sets are arranged in a circumferential array along the tumbling drum (2). The end of the transmission assembly (5) located on the outside of the tumbling drum (2) is always in contact with the inner ring surface of the irregular convex ring (4). The floating blade (6) is rotatably set between the inner walls of both ends of the tumbling drum (2), and one end of the floating blade (6) is hinged to the end of the transmission assembly (5) located inside the tumbling drum (2). When the tumbling drum (2) rotates, the irregular convex ring (4) squeezes the transmission assembly (5) to generate displacement, thereby driving the floating blade (6) to reciprocate and flip. The central sliding shaft (7) is movably set at the central axis of the inner wall at both ends of the tumbling drum (2). The central sliding shaft (7) is connected to the floating blade (6) and is squeezed by the floating blade (6) when the floating blade (6) flips, resulting in axial reciprocating displacement.

2. The food anti-caking stirring structure inside the drum of a tumbler according to claim 1, characterized in that: The tumbling drum (2) has a connecting shaft (201) that passes through the side wall of the frame (1) on the same side and is connected to the drive motor (3) at one end near the support rod (101). The other end of the tumbling drum (2) has a limiting ring (202) that fits into the top of the frame (1).

3. The food anti-caking stirring structure inside the drum of a tumbler according to claim 2, characterized in that: The inner walls of both ends of the tumbling drum (2) are provided with positioning shafts (203) for axially limiting the two ends of the floating blades (6) and spline rods (204) for circumferentially limiting the two ends of the central sliding shaft (7).

4. The food anti-caking stirring structure inside the drum of a tumbler according to claim 3, characterized in that: The transmission assembly (5) includes a push rod (501) that passes through the side wall of the tumbling drum (2). The end of the push rod (501) located outside the tumbling drum (2) is provided with a U-shaped seat (502). The inner walls of the U-shaped seat (502) are rotatably connected to a roller (503) that rolls against the inner surface of the irregular convex ring (4). The other end of the push rod (501) located inside the tumbling drum (2) is provided with a connecting rod (504) with a rectangular cross section. A support spring (505) sleeved on the outside of the push rod (501) is connected between the U-shaped seat (502) and the opposite side wall of the tumbling drum (2). A sealing sleeve (506) that is sealed to the inner wall of the perforation of the tumbling drum (2) is also sleeved on the outer wall of the push rod (501).

5. The food anti-caking stirring structure inside the drum of a tumbler according to claim 4, characterized in that: The floating blade (6) includes a blade body (601). Both ends of the blade body (601) are provided with connecting sleeves (602) that are rotatably connected to the positioning shaft (203). One side of the connecting sleeve (602) has an integrally constructed hinge (603) and a pressing block (604) on its outer wall. The end of the hinge (603) is hinged to the end of the connecting rod (504).

6. The food anti-caking stirring structure inside the drum of a tumbler according to claim 5, characterized in that: The blade body (601) has an internal cavity (605). The outer wall of the material-facing surface of the blade body (601) is provided with a plurality of conical holes (606) that communicate with the cavity (605) to generate local shearing and material flow disturbance to the clumped food when the blade body (601) is flipped.

7. The food anti-caking stirring structure inside the drum of a tumbler according to claim 6, characterized in that: Both ends of the central sliding shaft (7) are provided with sliding grooves (701) that slide with the spline rod (204). The end of the central sliding shaft (7) near the connecting shaft (201) is provided with a return spring (702) that is connected to the inner wall of the end of the tumbling drum (2).

8. The food anti-caking stirring structure inside the drum of a tumbler according to claim 7, characterized in that: The outer wall of the central sliding shaft (7) is provided with an annular groove (703) that cooperates with the extrusion block (604). One side wall of the annular groove (703) is constructed with an extrusion protrusion (704) that abuts against and fits against the extrusion block (604). The sides of the extrusion protrusion (704) and the extrusion block (604) that fit against each other are corresponding arc-shaped slopes.

9. The food anti-caking stirring structure inside the drum of a tumbler according to claim 8, characterized in that: A pawl (705) is provided at the end of the central sliding shaft (7) away from the return spring (702). A ratchet (205) that cooperates with the pawl (705) is provided on the inner wall of the same side end of the tumbling drum (2). A movable gap is reserved between the pawl (705) and the ratchet (205) for the axial fine adjustment of the central sliding shaft (7). The axial displacement of the central sliding shaft (7) causes the pawl (705) and the ratchet (205) to periodically engage and lock or separate, so as to change the local instantaneous impact vibration inside the tumbling drum (2).

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