A meat processing rotisserie

Abstract

The utility model discloses a kind of meat quality processing rotary baking rack, it is characterized by: including cylindrical heating cavity, heavy load rotary table, rotary disc, planetary mechanism, barbecue grill, oil collecting tray and oil dirt pipe;Spiral heating tube and directional air duct are equipped in cylindrical heating cavity, heavy load rotary table is driven rotation by motor and heavy reduction gear, rotary disc is coaxially fixed in heavy load rotary table and carries inner gear and positioning column;Planetary mechanism is composed of inner gear and outer gear that is sleeved in positioning column, outer gear drives barbecue grill to realize " revolution + rotation " double rotation;Oil collecting tray is ladder disc and is equipped with flow guide structure, and oil dirt pipe is discharged to realize oil stain collection and discharge with cooperation.The utility model ensures that meat quality is heated evenly by double rotation movement and directional air supply, realizes oil stain closed-loop processing by relying on oil collection and discharge system, transmission is stable and different scale meat quality processing needs are adapted, and baking quality and processing hygiene are improved.

Description

Technical Field

[0001] This utility model belongs to the field of food processing equipment technology, and is particularly applicable to rotary baking equipment for various meat products such as poultry, livestock, and aquatic meat in industrialized mass production or commercial processing scenarios, which can achieve uniform heating, efficient baking and orderly collection of oil stains. Background Technology

[0002] In the meat processing industry, roasting is a core process that determines the flavor, texture, and shelf life of meat products, and is widely used in the production and processing of mainstream products such as roasted poultry, sausages, cured meat, and large pieces of roasted meat. With consumers demanding higher consistency in meat product quality, and with industrial production imposing strict controls on processing efficiency and hygiene standards, optimizing the performance of roasting equipment has become a key direction for industry upgrading. Among these components, the roasting rack, which holds the meat products and works with the heating system to achieve uniform heating, directly affects the roasting effect, production efficiency, and subsequent cleaning and maintenance costs; it is a core component of roasting equipment.

[0003] Currently, the roasting racks commonly used in the meat processing industry are mainly divided into two types: fixed and simple rotating. Both types of structures have obvious technical drawbacks and cannot meet the needs of industrialized mass production and high-quality processing.

[0004] On the one hand, fixed baking racks often use multi-layered grid trays or hanging racks. Meat products are laid flat or suspended on the fixed racks before being placed into the oven for heating. The core drawback of this type of structure is extremely uneven heating: because the racks and meat products are in fixed positions, meat products near the heating elements are prone to scorching and excessive moisture loss, while meat products further away from the heating elements may not be thoroughly cooked, leading to significant quality differences within the same batch and a high rate of defective products. Simultaneously, to prevent oil dripping from the upper layers from contaminating the lower layers, a large gap must be maintained between the multiple racks, significantly reducing the oven's space utilization. Furthermore, frequent manual opening and closing of the oven door to turn the meat products during baking not only increases the workload for operators but also causes significant heat loss from the oven, increasing energy costs. Frequent operation also introduces external contaminants, posing a food safety hazard.

[0005] On the other hand, in order to improve the problem of uneven heating, some processing scenarios have adopted a simple rotating baking rack, which is driven by manual operation or a simple motor to rotate the rack around a single axis. However, this type of structure still has significant limitations: First, poor transmission stability. Most simple rotating racks use ordinary reducers or direct motor drives. When faced with the weight of large pieces of meat (such as whole poultry or livestock weighing over 10kg), they are prone to rotational jamming, inconsistent speed, and even shaft deformation, making it impossible to guarantee uniform rotation. Second, lack of self-rotation function. The rack can only drive the meat products to rotate as a whole. The meat products themselves cannot rotate, leaving some dead zones for localized heating. This is especially true for meat products with irregular surfaces, resulting in significant differences in surface color and doneness after baking. Third, chaotic oil stain handling. Simple rotating racks are not designed with a dedicated oil collection structure. Oil stains dripping from the meat products fall directly onto the bottom of the oven or the rotating shaft, which is not only difficult to clean but also produces a burnt odor due to oil accumulation, contaminating subsequent processed meat products. Furthermore, oil accumulation at high temperatures poses a fire risk. Fourth, lack of or unreasonable air duct design. Most simple rotating racks are not equipped with directional air ducts. The hot air generated by the heating elements flows erratically inside the oven, further exacerbating uneven heating and making it impossible to achieve standardized baking.

[0006] Furthermore, both fixed and simple rotary baking racks have shortcomings in terms of cleaning, maintenance, and automation adaptability: oil stains and meat scraps easily remain in the gaps of the grid of fixed racks and at the joints of the rotating shaft of simple rotary racks. Cleaning requires disassembling the parts one by one, which is cumbersome and does not meet the hygiene requirements of the food processing industry for "rapid cleaning and prevention of bacterial growth." At the same time, both types of racks are difficult to adapt to the rhythm of industrial continuous production lines and cannot be linked with the preceding marinating and subsequent cooling and packaging processes, which restricts the improvement of overall production efficiency.

[0007] In summary, current meat processing baking racks fail to meet the core requirements of industrialized mass production for "high quality, high efficiency, and high safety" in terms of heat uniformity, transmission stability, oil stain handling, cleaning and maintenance, and automation adaptability. There is an urgent need for a baking rack that can achieve dual rotational heating of meat products ("revolution + rotation"), equipped with directional air ducts and efficient oil collection structures, and with stable transmission, in order to solve the pain points of existing technologies and promote the standardization and automation upgrade of the baking process in the meat processing industry. Summary of the Invention

[0008] To solve the above problems, this utility model provides a rotating roasting rack for meat processing, the specific technical solution of which is as follows: it includes a cylindrical heating cavity, a heavy-duty turntable, a rotating disk, a planetary mechanism, a grill rack, an oil collection tray and an oil sludge pipe;

[0009] A movable door is provided on one side of the cylindrical heating cavity. Heating tubes are spirally arranged inside the cylindrical heating cavity, avoiding the area where the movable door is located. An air duct opening is provided on the other side of the cylindrical heating cavity opposite the movable door. The air duct opening includes a main air duct and multiple branch air ducts. The main air duct is located outside the cylindrical heating cavity and is arranged vertically. The multiple branch air ducts are arranged parallel to each other along the height direction of the main air duct and are connected to the main air duct. The end of each branch air duct away from the main air duct penetrates the outer wall of the cylindrical heating cavity and extends into its interior. The branch air ducts are located between the spiral lines of the heating tubes and do not interfere with each other.

[0010] The heavy-duty turntable is horizontally positioned at the bottom of the cylindrical heating chamber. The bottom center of the heavy-duty turntable is fixedly connected to the output end of the heavy-duty reducer. The input end of the heavy-duty reducer is connected to the motor via a coupling. The motor drives the heavy-duty reducer to rotate the heavy-duty turntable around its central axis. The rotating disk is disc-shaped and is coaxially fixed to the heavy-duty turntable above it with bolts. Three positioning posts are evenly fixed along the circumference on the top surface of the rotating disk, and the axes of the three positioning posts are parallel to the axis of the rotating disk.

[0011] The planetary mechanism consists of an internal gear and three external gears. The internal gear is fixed to the rotating disk by bolts, and its outer diameter is the same as that of the rotating disk. The three external gears are of the same specification and mesh with the inner side of the internal gear. Each external gear has a shaft hole at its center, and the three external gears are rotatably mounted on three positioning posts through the corresponding shaft holes, allowing them to rotate freely around the axis of the positioning posts. A grill mounting seat is fixed at the center of the top surface of each external gear. The grill mounting seat has an annular protrusion structure, and its axis is coaxial with the axis of the external gear. The side wall of the grill mounting base has at least two cavities along the circumferential direction. The cavities penetrate the side wall of the grill mounting base and open outwards, allowing tools to be inserted to assist in fixing the external gears or installing the grill. After the internal gear meshes with the three external gears, a gear-free non-intersecting area is formed in the middle of the planetary mechanism. An oil drain port is provided on the rotating disk in the gear-free non-intersecting area. The oil drain port penetrates the upper and lower end faces of the rotating disk along the axial direction of the rotating disk and extends to the top surface of the heavy-duty turntable, communicating with the pre-made channel inside the heavy-duty turntable.

[0012] The oil drain pipe is prefabricated along the central axis of the heavy-duty turntable at the center and bottom of the turntable. The upper end of the oil drain pipe is connected to the channel inside the heavy-duty turntable, and the lower end extends downward to the outside of the cylindrical heating cavity, so as to realize the connection between the oil drain port and the outside.

[0013] The bottom of the barbecue grill is provided with an external thread structure, and the inner wall of the grill mounting base is provided with an internal thread structure that is adapted to the external thread structure. The three barbecue grills are installed on the grill mounting bases of the three external gears in a one-to-one correspondence through threaded rotation and move synchronously with the external gears.

[0014] The oil collection tray is stepped, with its outer ring surface higher than the middle annular surface, forming a guide slope inclined towards the center. Three positioning holes are evenly opened along the circumference of the middle annular surface, and the positions of the three positioning holes correspond one-to-one with the positions of the three external gears. The oil collection tray is fitted into the connection between the grill mounting base and the external gears through the positioning holes, and the bottom surface of the oil collection tray is in contact with the top surface of the rotating disk, supporting it directly below the grill.

[0015] The bottom center of the oil collection tray protrudes downward to form a guide section. A guide hole is provided in the center of the guide section. The guide hole corresponds vertically to the oil drain port of the rotating plate, so that the oil dripping from the grill collects along the surface of the oil collection tray and flows into the guide section through the guide hole into the oil drain port.

[0016] Furthermore, the top of the cylindrical heating cavity is provided with a slide rail along the circumferential direction, and the movable door is in the shape of an arc plate and is adapted to the curvature of the inner wall of the cylindrical heating cavity. The movable door and the slide rail are fitted together.

[0017] Furthermore, the spiral trajectory of the heating tube is closely fitted with the inner wall of the cylindrical heating cavity.

[0018] Furthermore, the branch pipes of the air duct have the same diameter, all branch pipes extend into the cylindrical heating cavity to the same length, and the port of the branch pipe extending into the cavity faces the center of the heating cavity. The branch pipes are connected to the external fan through the main air duct.

[0019] Furthermore, the direction in which the external gear drives the barbecue grill to rotate is opposite to the direction in which the rotating disc drives the barbecue grill to revolve. The ratio of the rotation speed to the revolution speed is set by the gear ratio of the internal gear and the external gear.

[0020] Furthermore, the heating tube connects the spiral line above the door area with the spiral line below the door area through a spiral bend extending vertically; power supply terminals are led out from both ends of the heating tube and pass through the side wall of the cylindrical heating cavity, and are electrically connected to the external temperature control module and power supply module.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This utility model effectively solves the technical problems of traditional baking racks, such as uneven heating, chaotic oil stain handling, and unstable transmission, through innovative structural design of meat processing baking racks. Attached Figure Description

[0023] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 2 This is an overall sectional view.

[0026] Figure 3 Install exploded views of the planetary mechanism and the barbecue grill.

[0027] Figure 4 for Figure 3 Top view.

[0028] Figure 5 This is a schematic diagram of the oil collection tray installation.

[0029] In the diagram: 1-Cylindrical heating chamber; 11-Moving door; 12-Heating tube; 13-Main air duct; 14-Branch air duct; 2-Heavy-duty turntable; 3-Rotating disc; 31-Positioning column; 32-Oil drain port; 4-Planetary mechanism; 41-Internal gear; 42-External gear; 43-Grill mounting base; 5-Grill grill; 6-Oil collection tray; 61-Positioning hole; 7-Oil drain pipe. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 and Figure 2 As shown, this utility model provides a rotating roasting rack for meat processing, including a cylindrical heating cavity 1, a heavy-duty turntable 2, a rotating disk 3, a planetary mechanism 4, a grill rack 5, an oil collection tray 6, and an oil pipe 7.

[0032] A movable door 11 is provided on one side of the cylindrical heating cavity 1. The movable door 11 is in the shape of an arc plate, which is adapted to the curvature of the inner wall of the cylindrical heating cavity 1, and is opened and closed by a slide rail provided at the top. A heating tube 12 is spirally arranged inside the cylindrical heating cavity 1. The main body of the heating tube 12 is closely attached to the inner wall of the cylindrical heating cavity 1 and is coiled into a continuous spiral shape. In the area that needs to avoid the movable door 11, the heating tube 12 connects the spiral line above the door area with the spiral line below the door area through the vertically extending looping bend, thereby forming an approximately vertical connection part in the vertical space where the movable door 11 is located, ensuring the continuity and structural integrity of the heating tube 12 inside the entire cylindrical heating cavity 1. This spiral path avoids the area of ​​the movable door 11, ensuring that there are no dead angles in heating and that it does not affect the opening of the door.

[0033] A duct opening is provided on the other side of the cylindrical heating cavity 1 opposite the movable door 11. The duct opening includes a main duct 13 and multiple branch ducts 14. The main duct 13 is located outside the cylindrical heating cavity 1 and is arranged vertically. The multiple branch ducts 14 are arranged parallel to each other along the height direction of the main duct 13 and are connected to the main duct 13. The end of the branch duct 14 away from the main duct 13 penetrates the outer wall of the cylindrical heating cavity 1 and extends into its interior, and is located between the spiral lines of the heating pipe 12, without interfering with the heating pipe 12. All branch ducts 14 have the same pipe diameter, the same length extending into the heating cavity, and the port facing the center of the heating cavity. The main duct 13 is connected to an external fan (not shown in the figure) to force air into the cavity, so that the hot air circulates and the temperature inside the entire heating cavity is uniform and stable.

[0034] The heavy-duty turntable 2 is horizontally positioned at the bottom of the cylindrical heating chamber 1. Its bottom center is fixedly connected to the output end of the heavy-duty reducer. The input end of the heavy-duty reducer is connected to the motor drive via a coupling. The heavy-duty reducer is driven by the motor, which in turn drives the heavy-duty turntable 2 to rotate around its own central axis.

[0035] like Figure 3 , Figure 4 As shown, the rotating disk 3 is disc-shaped and is coaxially fixed to the heavy-duty turntable 2 above the heavy-duty turntable 2 by bolts; three positioning posts 31 are evenly fixed on the top surface of the rotating disk 3 along the circumferential direction, and the axes of the three positioning posts 31 are all parallel to the axis of the rotating disk 3.

[0036] The planetary mechanism 4 consists of an internal gear 41 and three external gears 42. The internal gear 41 is fixed to the rotating disk 3 by bolts, and its outer diameter is the same as that of the rotating disk 3. The three external gears 42 are of the same specifications and all mesh with the inner side of the internal gear 41. Each external gear 42 has a shaft hole in its center, and is rotated and fitted onto three positioning posts 31 through the shaft hole, and can rotate freely around the axis of the positioning posts 31. Each external gear 42 has a grill mounting seat 43 fixed at the center of its top surface. The grill mounting seat 43 has an annular protrusion structure, and its axis is coaxial with the axis of the external gear 42. The side wall of the grill mounting seat 43 has at least two cavities along the circumferential direction. The cavities penetrate the side wall of the grill mounting seat 43 and open outwards, so that tools can be inserted to assist in fixing the external gears 42 or installing the grill rack 5.

[0037] After the internal gear 41 meshes with the three external gears 42, a gear non-intersecting area without gear coverage is formed in the middle of the planetary mechanism 4; an oil drain port 32 is provided on the rotating disk 3 in this area, and the oil drain port 32 passes through the upper and lower end faces of the rotating disk 3 along the axial direction of the rotating disk 3 and extends to the top surface of the heavy-duty turntable 2, communicating with the pre-made channel inside the heavy-duty turntable 2.

[0038] The oil sludge pipe 7 is prefabricated along the central axis of the heavy-duty turntable 2 at the center and bottom of the heavy-duty turntable 2. Its upper end is connected to the channel inside the heavy-duty turntable 2, and its lower end extends downward to the outside of the cylindrical heating chamber 1, so as to realize the connection between the oil sludge outlet 32 ​​and the outside, which facilitates the collection and discharge of oil sludge.

[0039] The bottom of the barbecue grill 5 is provided with an external thread structure, and the inner wall of the grill mounting base 43 is provided with an internal thread structure that is compatible with it; the three barbecue grills 5 are installed on the grill mounting base 43 of the three external gears 42 in a one-to-one correspondence through threaded rotation and move synchronously with the external gears 42.

[0040] like Figure 5 As shown, the oil collecting tray 6 is in the shape of a stepped tray, with its outer ring surface higher than the middle annular surface, forming a guide slope inclined towards the center; three positioning holes 61 are evenly opened along the circumference of the middle annular surface, and the positions of the three positioning holes 61 correspond one-to-one with the positions of the three external gears 42; the oil collecting tray 6 is fitted onto the connection between the grill mounting base 43 and the external gears 42 through the positioning holes 61, and the bottom surface of the oil collecting tray 6 is in contact with the top surface of the rotating plate 3, supporting it directly below the grill 5; the bottom center of the oil collecting tray 6 protrudes downward to form a guide section, and a guide hole is opened in the center of the guide section, which corresponds vertically to the oil drain outlet 32 ​​of the rotating plate 3, so that the oil dripping from the grill 5 gathers along the surface of the oil collecting tray 6 to the guide section, and flows into the oil drain outlet 32 ​​through the guide hole.

[0041] Work process:

[0042] Open the movable door 11, skewer the meat products to be grilled onto the three grill racks 5, and screw the grill racks 5 into the grill rack mounting base 43; close the movable door 11, start the heating tube 12 and the external fan, and start the drive motor at the same time.

[0043] The motor drives the heavy-duty turntable 2 to rotate via a heavy-duty reducer, thereby driving the entire rotating disk 3 and all its components, including the internal gear 41, the oil collection tray 6, the three external gears 42, and the barbecue grill 5, to revolve around the central axis of the equipment. Since the internal gear 41 is fixed to the top surface of the rotating disk 3 by bolts, it revolves synchronously with the rotating disk 3 (without rotating itself). The three external gears 42 are fitted onto the positioning post 31 and mesh with the inner side of the internal gear 41. When the rotating disk 3 drives the external gears 42 to revolve around the central axis of the equipment, the meshing force of the internal gears 41 forces the external gears 42 to rotate around the axis of the positioning post 31. The direction of their rotation is opposite to the direction of their revolution.

[0044] By rationally setting the gear ratio of the internal gear 41 to the external gear 42, the rotation speed ratio between the rotation and revolution can be precisely controlled. The combined motion of revolution and reverse rotation ensures that the meat products on each grill 5 can receive the heat radiated by the heating tube 12 and the blowing of circulating hot air from all directions without dead angles. This avoids uneven heating caused by unidirectional rotation, achieves an extremely uniform baking effect, and effectively improves product quality.

[0045] During the roasting process, the grease and juices dripping from the meat products fall onto the oil collection tray 6 directly below. As the oil collection tray 6 revolves with the rotating disc 3, the grease moves outward along the disc surface under centrifugal force. However, the unique stepped slope structure of the oil collection tray 6, with a higher outer ring and a lower center, overcomes the centrifugal force, guiding the grease towards the center and flowing into the oil passage inside the heavy-duty turntable 2 through the guide holes and oil drain 32, and finally being discharged outside the machine through the oil sludge pipe 7. The entire process is completed automatically without the need for intermediate shutdowns for cleaning, ensuring continuous production and cleanliness of the equipment.

[0046] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A rotating roasting rack for meat processing, characterized in that: It includes a cylindrical heating chamber (1), a heavy-duty turntable (2), a rotating disk (3), a planetary mechanism (4), a barbecue grill (5), an oil collection tray (6), and an oil drain pipe (7); A movable door (11) is provided on one side of the cylindrical heating cavity (1). A heating tube (12) is spirally arranged inside the cylindrical heating cavity (1). The heating tube (12) avoids the area where the movable door (11) is located. An air duct is provided on the other side of the cylindrical heating cavity (1) opposite to the movable door (11). The air duct includes a main air duct (13) and multiple air duct branches (14). The main air duct (13) is located outside the cylindrical heating cavity (1) and is arranged vertically. Multiple air duct branches (14) are arranged parallel to each other along the height direction of the main air duct (13) and are connected to the main air duct (13). The end of the air duct branch (14) away from the main air duct (13) penetrates the outer wall of the cylindrical heating cavity (1) and extends into its interior. The air duct branch (14) is located between the spiral lines of the heating tube (12) and does not interfere with the heating tube (12). The heavy-duty turntable (2) is horizontally positioned at the bottom of the cylindrical heating chamber (1). The bottom center of the heavy-duty turntable (2) is fixedly connected to the output end of the heavy-duty reducer. The input end of the heavy-duty reducer is connected to the motor via a coupling. The heavy-duty turntable (2) is rotated around its own central axis by the motor driving the heavy-duty reducer. The rotating disk (3) is disc-shaped and is coaxially fixed above the heavy-duty turntable (2) with bolts. The top surface of the rotating disk (3) is also uniformly fixed with three positioning columns (31) along the circumferential direction. The axes of the three positioning columns (31) are all parallel to the axis of the rotating disk (3). The planetary mechanism (4) consists of an internal gear (41) and three external gears (42). The internal gear (41) is fixed to the rotating disk (3) by bolts, and the outer diameter of the internal gear (41) is the same as that of the rotating disk (3). The three external gears (42) are of the same specification and mesh with the inner side of the internal gear (41). Each external gear (42) has a shaft hole at its center. The three external gears (42) are rotatably mounted on three positioning posts (31) through the shaft holes and can rotate freely around the axis of the positioning posts (31). Each external gear (42) has a grill mounting seat (43) fixed at the center of its top surface. The grill mounting seat (43) has an annular protrusion structure, and its axis is perpendicular to that of the external gear (42). The axes of the two gears are coaxial. The side wall of the grill mounting base (43) is provided with at least two cavities along the circumferential direction. The cavities penetrate the side wall of the grill mounting base (43) and open outwards, for tools to be inserted to assist in fixing the external gear (42) or installing the grill (5). After the internal gear (41) meshes with the three external gears (42), a gear non-intersecting area without gear coverage is formed in the middle of the planetary mechanism (4). An oil drain port (32) is provided on the rotating disk (3) in the gear non-intersecting area. The oil drain port (32) penetrates the upper and lower end faces of the rotating disk (3) along the axis of the rotating disk (3) and extends to the top surface of the heavy-duty turntable (2), communicating with the pre-made channel inside the heavy-duty turntable (2). The oil sludge pipe (7) is prefabricated in the center and bottom of the heavy-duty turntable (2) along the central axis direction. The upper end of the oil sludge pipe (7) is connected to the channel inside the heavy-duty turntable (2), and the lower end extends downward to the outside of the cylindrical heating cavity (1) to realize the connection between the oil leak port (32) and the outside. The bottom of the barbecue grill (5) is provided with an external thread structure, and the inner wall of the grill mounting base (43) is provided with an internal thread structure that is compatible with the external thread structure. The three barbecue grills (5) are installed on the grill mounting base (43) of the three external gears (42) in a one-to-one correspondence through thread rotation and are moved synchronously with the external gears (42). The oil collection tray (6) is in the shape of a stepped tray, with its outer ring surface higher than the middle annular surface, forming a guide slope inclined towards the center; three positioning holes (61) are evenly opened along the circumference of the middle annular surface, and the positions of the three positioning holes (61) correspond one-to-one with the positions of the three external gears (42). The oil collection tray (6) is fitted onto the connection between the grill mounting base (43) and the external gears (42) through the positioning holes (61), and the bottom surface of the oil collection tray (6) is in contact with the top surface of the rotating disk (3), and is supported directly below the grill (5); The bottom center of the oil collection tray (6) protrudes downward to form a guide section. A guide hole is provided in the center of the guide section. The guide hole corresponds to the oil drain (32) of the rotating plate (3) so that the oil dripping from the grill (5) gathers along the surface of the oil collection tray (6) to the guide section and flows into the oil drain (32) through the guide hole.

2. The rotating roasting rack for meat processing according to claim 1, characterized in that: The top of the cylindrical heating cavity (1) is provided with a slide rail along the circumferential direction. The movable door (11) is in the shape of an arc plate and is adapted to the curvature of the inner wall of the cylindrical heating cavity (1). The movable door (11) is embedded in the slide rail.

3. The rotating roasting rack for meat processing according to claim 1, characterized in that: The spiral trajectory of the heating tube (12) is closely fitted with the inner wall of the cylindrical heating cavity (1).

4. The rotating roasting rack for meat processing according to claim 1, characterized in that: The diameter of the branch pipes (14) is the same, and the length of all the branch pipes (14) extending into the cylindrical heating cavity (1) is the same. The port of the branch pipe (14) extends into the center of the heating cavity. The branch pipe (14) is connected to the external fan through the main pipe (13).

5. A rotating roasting rack for meat processing according to claim 1, characterized in that: The direction in which the external gear (42) drives the barbecue grill (5) to rotate is opposite to the direction in which the rotating disc (3) drives the barbecue grill (5) to revolve. The ratio of the rotation speed to the revolution speed is set by the ratio of the number of teeth of the internal gear (41) and the external gear (42).

6. The rotating roasting rack for meat processing according to claim 1, characterized in that: The heating tube (12) connects the spiral line above the door area with the spiral line below the door area through the spiral bend extending vertically; the two ends of the heating tube (12) respectively lead out power supply terminals and pass through the side wall of the cylindrical heating cavity (1) to be electrically connected to the external temperature control module and power supply module.

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