Transmission conveyor device and corresponding quick freezing machine

Abstract

The present invention provides a transmission conveying device and a corresponding quick-freezing machine, the quick-freezing machine comprises a transmission conveying device, the transmission conveying device comprises a plurality of conveying mechanisms, a driving mechanism, a baffle and a flipping mechanism, the conveying mechanism is used to convey food into the machine body and reciprocate in the machine body; the driving mechanism is used to drive the conveying mechanism to rotate and convey; the baffle is arranged between the conveying mechanisms and is located on one side of the conveying end of the conveying mechanism so that the food enters the next conveying mechanism; the flipping mechanism is arranged between the conveying mechanism and the baffle, and is used to flip the food conveyed by the conveying mechanism and transfer it to the baffle; the plurality of conveying mechanisms are arranged in a stacked and spaced manner, and the transmission directions of adjacent conveying mechanisms are opposite. The present invention reduces the occupied space through the stacked and reciprocating arrangement of the plurality of conveying mechanisms, and enables the food to be transferred and conveyed between the conveying mechanisms, thereby avoiding the adhesion of the food.

Description

[0001] This application is a divisional application. The application number of the original application is: "201710801327.2", the application date is: "September 7, 2017", and the name of the invention is: "Flip-type quick-freezer". Technical Field

[0002] The invention relates to the field of quick freezers, in particular to a transmission and conveying device and a corresponding quick freezer. Background Art

[0003] With the increasing demand for quick-frozen food in the market, quick-freezing machines used to freeze quick-frozen food are also developing rapidly.

[0004] There are many types of quick freezers available, and the main refrigeration methods include mechanical compressor refrigeration devices (tunnel type quick freezer, plate quick freezer, single / double spiral quick freezer, immersion quick freezer) and liquid nitrogen quick freezing devices (tunnel type liquid nitrogen quick freezer, spiral liquid nitrogen quick freezer, liquid nitrogen immersion quick freezer).

[0005] Some quick freezers use multiple conveying mechanisms that are stacked and spaced apart, and are connected in a zigzag manner to convey food, thereby reducing the space occupied. In many cases, multiple conveying mechanisms need to be cleaned, and the conveying mechanisms of existing quick freezers are not convenient for quickly pushing out the body or pushing in the body for fixing.

[0006] Therefore, it is necessary to provide a transmission and conveying device and a corresponding quick-freezing machine to solve the problems existing in the prior art. Summary of the invention

[0007] The embodiment of the present invention provides a quick freezer that occupies a small space, has a high quick freezing efficiency and is not prone to food adhesion, thereby solving the technical problems of existing quick freezers that occupy a large space, have a low quick freezing efficiency and are prone to food adhesion.

[0008] The present invention provides a transmission conveying device, which comprises: a machine body, a conveying frame, a limit assembly, a conveying mechanism arranged on the conveying frame, and rollers arranged at the four corners of the bottom of the conveying frame;

[0009] The plurality of conveying mechanisms are arranged in a stacked and spaced manner, and the transmission directions of adjacent conveying mechanisms are opposite. The plurality of conveying mechanisms are used to convey food into the body and convey it reciprocatingly within the body. One side of the body is provided with a sealed door for the conveying frame to enter the body or exit the body. The bottom surface of the body is provided with a guide rail for connecting to the roller for rolling. The limiting assembly is used to limit the rolling of the roller. The roller includes a front roller away from the sealed door and a rear roller close to the sealed door. The limiting assembly includes a first limiting assembly arranged at the end of the guide rail for limiting the front roller, and a second limiting assembly arranged at the beginning of the guide rail for limiting the rear roller.

[0010] In the present invention, the first limiting assembly includes a supporting portion fixedly connected to the body, an abutting portion extending from the free end of the supporting portion and forming a matching groove ring, a clamping portion cooperating with the abutting portion for clamping the front roller, a detour portion connected between the abutting portion and the clamping portion, and a guide portion formed at the free end of the clamping portion;

[0011] The detour portion is in an inverted U-shape and has a restoring force of elastic deformation, the abutment portion, the detour portion and the clamping portion constitute an elastic clamping structure, and the guide portion is in a V-shape to guide the front roller to enter or exit the range of the elastic clamping structure;

[0012] When the first limiting assembly limits the front roller, the detour portion is in an elastically stretched state, and the abutting portion and the clamping portion are tightly fastened to the groove ring to limit the front roller.

[0013] Among them, one end of the guide rail close to the first limiting component is in a downward sliding shape; when the first limiting component limits the front roller, the front roller has a downward sliding trend, and the front roller abuts against the supporting part.

[0014] In the present invention, the second limiting assembly includes a matching piece fixedly arranged on one side of the guide rail and a fastening piece arranged on the other side of the guide rail and opposite to the matching piece;

[0015] The convex end surface of the fastening member facing one end of the matching member is composed of an introduction slope for introducing the rear roller into the machine body, an export slope for exporting the rear roller from the machine body, and a fastening plane connected to the introduction slope and the export slope.

[0016] Furthermore, the distance from the tightening plane to the mating piece is smaller than the width of the rear roller, and the width of the front roller is smaller than or equal to the distance from the tightening plane to the mating piece, so as to limit the retreat of the rear roller passing through the tightening plane, and the distances from the lead-in slope and the lead-out slope to the mating piece gradually increase from the inside to the outside.

[0017] In addition, the included angle between the lead-out inclined surface and the tight plane is smaller than the included angle between the lead-in inclined surface and the tight plane, and the vertical distance between the two ends of the lead-out inclined surface is larger than the vertical distance between the two ends of the lead-in inclined surface.

[0018] Furthermore, one end of the fastening member having the convex end surface is hollowed out to have a plurality of through holes, wherein the density of the through holes on the side close to the introduction slope is greater than the density of the through holes on the side close to the exit slope.

[0019] In the present invention, the second limiting assembly also includes a driving unit for driving the fastening piece to slide, and the driving unit includes a sliding rail slidably connected to the fastening piece, a fixed block arranged on the back of the fastening piece, and a screw rod passing through the fixed block and fixedly connected to the fastening piece, the screw rod and the fixed block are threadedly connected, and the extension direction of the sliding rail is perpendicular to the extension direction of the guide rail.

[0020] In the present invention, the transmission conveying device further comprises:

[0021] A driving mechanism, used for driving the conveying mechanism to rotate and convey;

[0022] A baffle, arranged between the conveying mechanisms and located on one side of the conveying end of the conveying mechanism, so as to allow food to enter the next conveying mechanism;

[0023] The turning mechanism comprises a turning device for receiving and turning the food and unloading the food to the next conveying mechanism and a motor for driving the turning device to rotate, wherein the rotation direction of the turning device is consistent with the rotation direction of the driving shaft, and the turning device is arranged between the conveying mechanism and the baffle plate, and is used to turn over the food conveyed by the conveying mechanism and transfer it to the baffle plate or the conveying head end of the next conveying mechanism;

[0024] The conveying mechanism comprises:

[0025] Mesh belts, used to transport food;

[0026] A driving shaft is arranged at one end of the mesh belt;

[0027] A driven shaft is arranged at the other end of the mesh belt, and the driven shaft cooperates with the driving shaft to drive the mesh belt to rotate and transport;

[0028] A transmission gear, fixedly arranged at one end of the driving shaft facing away from the mesh belt;

[0029] One of the driving shafts of the conveying mechanisms with the same conveying direction is connected to the driving mechanism through a coupling, and the driving shafts between the conveying mechanisms with the same conveying direction are rotationally connected through a chain;

[0030] The mesh belt includes a mesh belt body that rotates around the driving shaft and the driven shaft, and a plurality of raised rings that are convexly arranged on the mesh belt body and extend around the conveying track of the mesh belt body. A conveying groove for conveying food is defined between adjacent raised rings and the mesh belt body to convey different types of food.

[0031] The present invention also includes a quick-freezing machine, which includes the above-mentioned transmission and conveying device, and also includes a machine body, a refrigeration device and a cold air circulation device, wherein the machine body includes a freezing chamber for quick-freezing food, a drive installation chamber independently arranged on one side of the freezing chamber, and an electric control chamber independently arranged on the other side of the freezing chamber;

[0032] The conveying mechanism is arranged in the freezing chamber, the reduction motor of the driving mechanism is installed in the driving installation chamber, and the rotating shaft of the reduction motor penetrates into the freezing chamber and is connected to the driving shaft through a coupling;

[0033] The refrigeration device comprises a cold air delivery main pipe arranged in the electric control room, a control valve arranged on the cold air delivery main pipe, cold air delivery branch pipes arranged on both sides of the inner wall of the freezing chamber and connected to the cold air delivery main pipe, and a nozzle arranged on the cold air delivery branch pipe;

[0034] The cold air circulation device comprises a fan fixedly arranged between the cold air delivery branch pipes, a motor arranged in the electric control room for driving the fan to rotate, and a guide plate sleeved on the fan;

[0035] The guide plate is provided with an opening, the fan is arranged in the opening, and there is a space for ventilation between the guide plate and the inner wall of the body;

[0036] The air outlet direction of the fan faces the inner wall of the machine body, and air outlets are arranged around the guide plate.

[0037] Compared with the quick freezer of the prior art, the quick freezer of the present invention has the following beneficial effects:

[0038] The quick freezer of the present invention reduces the occupied space by arranging multiple conveying mechanisms in a stacked reciprocating manner, and enables the food to be transferred and conveyed between the conveying mechanisms, thereby preventing the food from sticking together. At the same time, when the granular food is transferred from the conveying mechanism to the next conveying mechanism, it will roll and flip, further preventing the food from sticking together.

[0039] By setting up multiple conveying troughs to freeze different types of food, different types of food can be quickly frozen at the same time, thereby improving the freezing efficiency;

[0040] By setting up the flipping mechanism, the food can be flipped between the two conveying mechanisms and transferred to the next conveying mechanism. After multiple flipping, the food can be evenly frozen during transportation, which improves the freezing efficiency and avoids food sticking. In addition, the setting of the flipping mechanism can perform a secondary conduction on the food in height, which avoids the food from falling directly from the previous conveying mechanism to the next conveying mechanism and damaging the food.

[0041] By setting the limiting component, the conveying frame is limited, and the stability of the conveying mechanism in conveying work is improved; and by setting the first limiting component to limit the front roller and the second limiting component to limit the rear roller, the stability of the conveying mechanism is further improved; during the operation of the transmission conveying device, vibrations are continuously generated to make the roller roll, wherein the setting of the first limiting component and the lower sliding section of the guide rail increases the difficulty of the roller retreating, improves the stability of the roller, and avoids the situation of the roller retreating; the setting of the second limiting component further increases the difficulty of the roller retreating and improves the stability of the roller;

[0042] By setting up the cold air circulation device, the cold air circulation in the freezer is strengthened, and the freezing efficiency of the cold air on the food is improved.

[0043] The invention solves the technical problems of the prior art quick freezer, that is, the large space occupied, the easy adhesion of food and the low freezing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a side cross-sectional structural schematic diagram of a preferred embodiment of the quick-freezing machine of the present invention;

[0045] Figure 2 It is a front cross-sectional structural schematic diagram of a preferred embodiment of the quick-freezing machine of the present invention;

[0046] Figure 3 It is a structural schematic diagram of a conveying mechanism of a preferred embodiment of a quick-freezing machine of the present invention;

[0047] Figure 4 for Figure 1 A magnified view of middle;

[0048] Figure 5 for Figure 4 A schematic diagram of the structure of the flipper in FIG.

[0049] Figure 6 It is a schematic diagram of the matching structure of the first limit assembly and the front roller of the preferred embodiment of the quick-freezing machine of the present invention;

[0050] Figure 7 for Figure 2 Enlarged view of middle B;

[0051] Figure 8 It is a schematic top view of the matching structure of the second limit assembly and the rear roller of the preferred embodiment of the quick-freezing machine of the present invention;

[0052] Fig. 9 It is a schematic structural diagram of a machine body of a preferred embodiment of a quick-freezing machine of the present invention. DETAILED DESCRIPTION

[0053] Please refer to the drawings, in which the same component symbols represent the same components, and the principle of the present invention is illustrated by implementing it in an appropriate computing environment. The following description is based on the illustrated specific embodiment of the present invention, which should not be considered as limiting other specific embodiments of the present invention that are not described in detail herein.

[0054] There are many types of quick freezers available, and the main refrigeration methods include mechanical compressor refrigeration devices (tunnel type quick freezer, plate quick freezer, single / double spiral quick freezer, immersion quick freezer) and liquid nitrogen quick freezing devices (tunnel type liquid nitrogen quick freezer, spiral liquid nitrogen quick freezer, liquid nitrogen immersion quick freezer).

[0055] However, mechanical compressor refrigeration devices have disadvantages such as slow quick freezing efficiency, large equipment footprint, small production capacity, and high food dry loss. Although liquid nitrogen quick freezing machines are widely used due to their advantages such as fast quick freezing efficiency, low food dry loss, and small footprint, quick-frozen foods are prone to sticking together and the bottom of the product cools down and freezes slowly.

[0056] At the same time, some quick freezers use multiple conveying mechanisms that are stacked and spaced apart, and are connected in a zigzag manner to convey food, thereby reducing the space occupied. In many cases, multiple conveying mechanisms need to be cleaned, and the conveying mechanisms of existing quick freezers are not convenient for quickly pushing out the body and pushing in the body for fixing.

[0057] Please refer to Figure 1 and Figure 2 , Figure 1 It is a side cross-sectional structural schematic diagram of a preferred embodiment of the quick-freezing machine of the present invention; Figure 2 The figure is a front cross-sectional structural schematic diagram of a preferred embodiment of the quick freezing machine of the present invention. The quick freezing machine of the present invention comprises a machine body, a transmission and conveying device arranged in the machine body, a refrigeration device, a cold air circulation device and an electric control system. Among them, the electric control system is used to control the operation of the transmission and quick freezing device, the refrigeration device and the cold air circulation device.

[0058] In this embodiment, please refer to Fig. 9The machine body includes three independent chambers, namely, a freezing chamber 11 for freezing food, a drive installation chamber 12 arranged on one side of the freezing chamber 11, and an electric control chamber 13 arranged on the other side of the freezing chamber 11. The machine body 10 can be made of 304 stainless steel, and the machine body 10 adopts a polyurethane integral foaming process, which has a good heat insulation effect.

[0059] The transmission conveying device includes a conveying mechanism 21, a driving mechanism 22 for driving the conveying mechanism 21 to rotate and convey, a baffle 23, a flip mechanism, and a conveying frame 25 for fixing the conveying mechanism 21, the baffle 23, and the flip mechanism. The conveying mechanism 21, the baffle 23, the flip mechanism, and the conveying mechanism 25 are arranged in the freezing chamber 11, the driving mechanism 22 is arranged in the driving installation chamber 12, and the reduction motor shaft in the driving mechanism 22 penetrates into the freezing chamber 11 and is connected to the driving shaft 212 of the conveying mechanism 21 through the coupling 221.

[0060] The refrigeration device includes a cold air delivery main pipe 31, a control valve 32, a cold air delivery branch pipe 33 connected to the cold air delivery main pipe 31, and a nozzle arranged on the cold air delivery branch pipe 33. The cold air delivery main pipe 31 and the control valve 32 are arranged in the electric control room 13, the cold air delivery branch pipe 33 and the nozzle are arranged in the freezing chamber 11, and the cold air delivery main pipe 31 penetrates into the freezing chamber 11 and is connected to the cold air delivery branch pipe 33. The refrigeration gas delivered by the refrigeration device can be liquid nitrogen or carbon dioxide.

[0061] The cold air circulation device includes a fan 41, a motor 42 for driving the fan 41 to rotate, and a guide plate 43 for guiding the air discharged from the fan 41. The fan 41 and the guide plate 43 are arranged in the freezing chamber 11, and the motor 42 is arranged in the electric control room 13. The rotating shaft of the motor 42 penetrates into the freezing chamber 11 and is rotatably connected to the fan 41.

[0062] The electric control system includes an electric cabinet, a temperature sensor for sensing the temperature in the freezing chamber 11, a touch screen, a PLC (programmable logic controller), a frequency converter and an emergency stop switch. The temperature sensor is arranged in the freezing chamber 11, and the electric cabinet, the touch screen, the PLC, the frequency converter and the emergency stop switch are arranged in the electric control room 13.

[0063] A plurality of conveying mechanisms 21 are used to convey food into the machine body 10, and reciprocate and convey the food in the machine body 10 while freezing the food; a driving mechanism 22 is used to drive the conveying mechanism 21 to rotate and convey; a baffle 23 is arranged between the conveying mechanisms 21 and is located on one side of the conveying end of the conveying mechanism 21 so that the food enters the next conveying mechanism 21; a flipping mechanism is arranged between the conveying mechanism 21 and the baffle 23, and is used to flip the food conveyed by the conveying mechanism 21 and transfer it to the baffle 23 or the conveying head end of the next conveying mechanism 21;

[0064] The plurality of conveying mechanisms 21 are arranged in a stacked manner and at intervals, and the conveying directions of adjacent conveying mechanisms 21 are opposite.

[0065] In this embodiment, multiple conveying mechanisms 21 are arranged in a stacked and spaced manner, which reduces the space occupied by this embodiment and allows food to be transferred from one conveying mechanism 21 to the next conveying mechanism 21 during transportation. During the transfer process, the food is separated from the conveying mechanism 21, thereby preventing the food from being on the conveying mechanism 21 all the time, thereby preventing the food from sticking to the conveying mechanism 21 and to one another.

[0066] In addition, the setting of the flipping mechanism not only plays the role of flipping the food, but also plays a role of secondary conduction; flipping the food can, firstly, avoid the adhesion of the food, and secondly, allow the food to be evenly frozen, thereby improving the freezing efficiency of the food; as for the secondary conduction effect, since the food will tend to be very hard during the freezing process, it is avoided that the food falls directly from the previous conveying mechanism 21 to the next conveying mechanism 21, causing damage to the food and damaging the quality of the food, and the flipping mechanism plays a buffering role.

[0067] Please refer to Figure 2 and Figure 3 In this embodiment, the conveying mechanism 21 includes a mesh belt 211 , a driving shaft 212 , a driven shaft 213 and a transmission gear 214 .

[0068] The mesh belt 211 is used to transport food; the driving shaft 212 is arranged at one end of the mesh belt 211; the driven shaft 213 is arranged at the other end of the mesh belt 211, and the driven shaft 213 cooperates with the driving shaft 212 to drive the mesh belt 211 to rotate and transport; the transmission gear 214 is fixedly arranged at one end of the driving shaft 212 facing away from the mesh belt 211;

[0069] A driving shaft 212 of a conveying mechanism 21 with the same conveying direction is connected to the driving mechanism 22 through a coupling 215, and the driving shafts 212 of the conveying mechanisms 21 with the same conveying direction are rotationally connected through a chain 216. The driving mechanism includes two reduction motors, and the two reduction motors correspondingly drive the conveying mechanisms 21 with opposite conveying directions.

[0070] In this embodiment, the conveying mechanism 21 is divided into a first conveying mechanism and a second conveying mechanism, and the conveying directions of the two conveying mechanisms are opposite. A plurality of first conveying mechanisms constitute a first conveying combination, and a plurality of second conveying mechanisms constitute a second conveying combination. A first conveying mechanism in the first conveying combination is driven by a reduction motor, so that the first conveying mechanism drives the adjacent first conveying mechanism in the same group, so that the first conveying mechanisms in the same group operate together. Similarly, a second conveying combination in the second conveying combination is driven by another reduction motor, and then the second conveying mechanism drives the adjacent second conveying mechanism in the same group, so that the second conveying mechanisms in the same group operate together.

[0071] The adjacent conveying mechanisms 21 in the same group are rotationally connected through a transmission connection method of a transmission gear 214 and a chain 216 , and the rotating shaft of the reduction motor is connected to the driving shaft 212 through a coupling 215 .

[0072] Moreover, in this embodiment, the conveying mechanism 21 is an odd number, such a setting allows food to enter from one end of the machine body 10 and exit from the other end, avoiding the situation where food enters and exits at the same time and is easily confused; there are five optional first conveying mechanisms and four second conveying mechanisms. Of course, the conveying mechanism 21 can be an even number.

[0073] In addition, the mesh belt 211 includes a mesh belt body 2111 that rotates around a driving shaft 212 and a driven shaft 213, and a plurality of raised rings 2112 that are convexly arranged on the mesh belt body 2111 and extend around the conveying track of the mesh belt body 2111. A conveying groove 2113 for conveying food is defined between adjacent raised rings 2112 and the mesh belt body 2111 to convey different types of food. For example, according to the type of food, it can be seafood food, meat food, vegetable food, different types of seafood, different types of meat and different types of vegetables, etc.; according to the shape of the food, it can be granular food and non-granular food, etc.

[0074] The provision of multiple conveying troughs 2113 serves to isolate different types of food, so that the present embodiment can prevent different types of food from being mixed up while freezing different foods.

[0075] Specifically, there are three raised rings 2112, forming two conveying grooves 2113, and the conveying grooves 2113 are respectively a first conveying groove for conveying granular food and a second conveying groove for conveying non-granular food;

[0076] A plurality of convex hemispherical stoppers 2114 are convexly disposed at the bottom of the first conveying trough. The stoppers 2114 are evenly arranged in an array, and the stoppers 2114 between adjacent rows are staggered.

[0077] Of course, in the present invention, the number of raised rings 2112 is not limited to three, and can be more than three, such as four, five, etc. The setting of the convex hemispherical stopper 2114 in the first conveying trough plays a role in preventing the granular food from rolling. Because when the granular food is transferred from one conveying mechanism 21 to the next conveying mechanism 21, the granular food will roll on the mesh belt 211 of the next conveying mechanism 21 under the turning of the turning mechanism and the guidance of the guide plate 23. The setting of the stopper 2114 is to prevent the granular food from rolling, so that the granular food enters the next conveying mechanism in an orderly manner, and avoids the uneven arrangement of the food due to the rolling of the granular food.

[0078] Please refer to Figure 4 and Figure 5 In this embodiment, the turning mechanism includes a turner 24 for receiving and turning the food and unloading the food to the next conveying mechanism 21 and a motor for driving the turner 24 to rotate. The rotation direction of the turner 24 is consistent with the rotation direction of the driving shaft 212.

[0079] The flipper 24 includes a cylindrical flipper body 241, a side plate 242 and a bearing plate 243. The cylindrical flipper body 241 is rotatably connected to the motor via a rotating shaft; the side plates 242 are arranged at both ends of the flipper body 241; a plurality of bearing plates 243 are evenly arranged on the circumference of the flipper body 241 around the axis of the flipper body 241, and a loading and unloading groove 244 is defined between the side plates 242, the flipper body 241 and the adjacent bearing plates 243;

[0080] The loading and unloading groove 244 has a loading state for receiving food, a flipping state for flipping the received food, and an unloading state for unloading the flipped food during rotation.

[0081] When the loading and unloading groove 244 is in the flipped state, the bottom surface height of the loading and unloading groove 244 is lower than the conveying plane of the conveying mechanism 21 .

[0082] In this embodiment, when the loading and unloading groove 244 is in the load-bearing state, the notch of the loading and unloading groove 244 faces the conveying mechanism 21, when the loading and unloading groove 244 is in the flipping state, the notch of the loading and unloading groove 244 faces upward, and when the loading and unloading groove 244 is in the unloading state, the notch of the loading and unloading groove 244 faces the baffle 23. The states of the loading and unloading groove 244 are switched by rotating the flipper body 241 at a certain preset angle. In this embodiment, there are five bearing plates 243, so the loading and unloading groove 244 can be switched from the load-bearing state to the flipping state by rotating 72°, and can be switched from the flipping state to the unloading state by rotating 72°.

[0083] When the loading and unloading groove 244 is in the flipped state, the bottom surface height of the loading and unloading groove 244 is the highest height. In this embodiment, the bottom surface of the loading and unloading groove 244 is the first connecting surface 243a.

[0084] This arrangement ensures that when the turner 24 is in the unloading state, the height of the food is lower than the conveying plane of the conveying mechanism 21, which plays a role in buffering the falling height of the food to prevent the food from falling directly from the conveying plane of the conveying mechanism 21 to the next conveying mechanism 21 and damaging the food.

[0085] In this embodiment, the carrying plate 243 includes a fixing portion 2431 fixedly connected to the flipper body 241, a carrying portion 2432 extending from the fixing portion 2431 toward the outside of the flipper body 241, and a guide hook portion 2433 disposed at a free end of the carrying portion 2432, wherein the guide hook portion 2433 is formed by warping from the free end of the carrying portion 2432;

[0086] The fixing parts 2431 are connected to each other and cover the circumferential surface of the flipper body 241, and the fixing parts 2431 include a first connecting surface 243a and a second connecting surface 243b; the bearing part 2432 includes a receiving surface 243c connected to the first connecting surface 243a and an unloading surface 243d connected to the second connecting surface 243b and located on the back of the receiving surface 243c, and the guide hook part 2433 includes an introduction surface 243e connected to the receiving surface 243c and an output surface 243f connected to the unloading surface 243d;

[0087] Among them, the introduction surface 243e and the receiving surface 243c of the supporting plate 243 form a supporting surface 243g, the second connecting surface 243b, the unloading surface 243d and the leading-out surface 243f form a sliding surface 243h, and the supporting surface 243g, the first connecting surface 243a and the sliding surface 243h of the previous supporting plate 243 constitute a loading and unloading groove 244.

[0088] In this embodiment, the introduction surface 243e of the guide hook portion 2433 is an arc surface, and is warped toward the outside of the slot of the loading and unloading groove 244. When the loading and unloading groove 244 is in a load-bearing state, the introduction surface 243e is used to guide the food into the loading and unloading groove 244 on the one hand, and prevent the food from sliding out of the loading and unloading groove 244 on the other hand. The warping direction of the lead-out surface 243f of the guide hook portion 2433 is consistent with that of the introduction surface 243e. When the loading and unloading groove 244 is in an unloading state, the lead-out surface 243f is used to smoothly guide the food to slide out of the loading and unloading groove 244 on the one hand, thereby avoiding food from falling and injuring, and on the other hand, it accelerates the food to slide out of the loading and unloading groove 244, thereby improving the transfer efficiency.

[0089] In addition, the arrangement of the fixing portions 2431 covering the entire circumferential surface of the flipper body 241 increases the connection area between the support plate 243 and the flipper body 241, thereby improving the stability of the fixed connection between the two.

[0090] Furthermore, the supporting plate 243 has five pieces, the angle between the first connecting surface 243a and the supporting surface 243g is greater than or equal to 90°, the second connecting surface 243b and the unloading surface 243d are in the same plane, and the angle between the first connecting surface 243a and the lower sliding surface 223g is an obtuse angle.

[0091] It is obvious that the more the number of supporting plates 243 is, the smaller the accommodating space of the loading and unloading grooves 244 is; the smaller the number of supporting plates 243 is, the greater the angle of rotation required for the state conversion between the loading and unloading grooves 244 is. If the conveying speed of the conveying mechanism 21 remains unchanged, the loading and unloading grooves 244 need to increase the rotation speed to cooperate with the conveying mechanism 21. Once the rotation speed of the loading and unloading grooves 244 is too fast, the food will be thrown out and damaged.

[0092] Therefore, in this embodiment, five bearing plates 243 are selected, so that the loading and unloading slot 244 has a relatively suitable accommodating space and a suitable rotation speed. Of course, the number of bearing plates 243 is not limited to this, and can also be greater than five or less than five.

[0093] The angle between the first connecting surface 243a and the bearing surface 243g is set to be greater than or equal to 90° to avoid the situation where the angle between the two is an acute angle. Therefore, when the angle between the two is an acute angle, on the one hand, the space of the acute angle is basically not used to accommodate food, and on the other hand, the acute angle space is prone to residues during the low-temperature freezing process, which will contaminate other foods. Therefore, the setting of the angle greater than or equal to 90° can improve the cleanliness of the loading and unloading groove 244. Preferably, the angle is 90°. The angle of 90° not only improves the cleanliness of the loading and unloading groove 244 but also ensures that the loading and unloading groove 244 has the maximum accommodating and utilization space.

[0094] The second connecting surface 243b and the unloading surface 243d are in the same plane in order to improve the flatness of the sliding surface 223g so that the food can be unloaded smoothly and quickly; and the angle between the first connecting surface 243a and the sliding surface 223g is set to be an obtuse angle. When the loading and unloading groove 244 is in the unloading state, the first connecting surface 243a and the sliding surface 223g form a stepped smoothly transitioned inclined surface, so that the food can quickly break away from the first connecting surface 243a and slide more gently on the sliding surface 223g, thereby preventing the food from sliding too fast and touching the baffle 23 or the next conveying mechanism 21 to damage the food.

[0095] Furthermore, the bearing surface 243g is a flexible surface, and the lower sliding surface 243h is a smooth surface. When the loading and unloading groove 244 is in a bearing state, the bearing surface 243g needs to receive the food, and when the food falls from the conveying mechanism 21 onto the bearing surface 243g, the food and the bearing surface 243g collide with each other. The setting of the flexible bearing surface 243g can buffer the collision of the food with the bearing surface 243g and avoid damage to the food. Of course, a flexible layer can also be formed on the bearing surface 223 to buffer the collision of the food with the bearing surface 243g.

[0096] When the loading and unloading groove 244 is in the unloading state, the lower sliding surface 243h serves as a guide for the food to slide downward, so the smooth lower sliding surface 243h facilitates the food to slide downward.

[0097] In addition, the motor of the turning mechanism is arranged in the driving installation chamber 12 , and the motor is connected to the turning device body 241 of the turning device 24 through a rotating shaft.

[0098] Please refer to Figure 1 and Figure 6 In this embodiment, the transmission conveying device further includes a conveying frame 25 provided with a conveying mechanism 21 and rollers arranged at the four corners of the bottom of the conveying frame 25; one side of the body 10 is provided with a sealing door 14 for facilitating the conveying frame 25 to enter the inside of the body 10 or exit to the outside, and a guide rail 15 arranged on the bottom surface of the body 10 for rolling connection with the roller; the quick freezer further includes a limit assembly for limiting the rolling of the roller;

[0099] The roller includes a roller body and a groove ring which is concavely arranged on the circumferential surface of the roller body and is used for rolling cooperation with the guide rail 15;

[0100] The rollers include a front roller 261 away from the sealing door 14 and a rear roller 262 close to the sealing door 14; the limiting assembly includes a first limiting assembly 31 arranged at the end of the guide rail 15 for limiting the front roller 261;

[0101] The first limiting assembly 31 includes a supporting portion 311 fixedly connected to the body 10, an abutting portion 312 extending from a free end of the supporting portion 311 and forming a matching groove ring, a clamping portion 313 cooperating with the abutting portion 312 for clamping the front roller 261, a detour portion 314 connected between the abutting portion 312 and the clamping portion 313, and a guiding portion 315 formed at a free end of the clamping portion 313;

[0102] The detour portion 314 is in an inverted U-shape and has a restoring force of elastic deformation. The abutment portion 312, the detour portion 314 and the clamping portion 313 form an elastic clamping structure. The guide portion 315 is in a V-shape to guide the front roller 261 to enter or exit the range of the elastic clamping structure.

[0103] When the first limiting assembly 31 limits the front roller 261 , the detour portion 314 is in an elastically stretched state, and the abutting portion 312 and the clamping portion 313 are tightly engaged with the groove ring to limit the front roller 261 .

[0104] Specifically, when the first limiting assembly 31 limits the front roller 261, the detour portion 314 is stretched by the front roller 261, so that the detour portion 314 is in a stretched state. At this time, the detour portion 314 is stretched and has a contraction elastic force. Under the action of this elastic force, the clamping portion 313 tightly clamps the front roller 261 to limit the front roller.

[0105] In addition, one end of the guide rail 15 close to the first limiting assembly 31 is in a downward sliding state; when the first limiting assembly 31 limits the front roller 261 , the front roller 261 has a downward sliding trend and abuts against the support portion 311 .

[0106] Specifically, the downwardly descending section of the guide rail 15 is the downwardly descending section 151. When the first limiting assembly 31 limits the front roller 261, the front roller 261 is located on the downwardly descending end 151 and abuts against the supporting light portion 311. This arrangement allows the front roller 261 to be more closely attached to the abutting portion 312, and the downwardly descending center of gravity of the front roller 261 just abuts against the supporting portion 311. The strong supporting force of the supporting portion 311 is used to stabilize the downward movement of the front roller 261, so that the front roller 261 has a downward tendency.

[0107] Because the front roller 261 is in a downward trend, the front roller 261 needs to move backward not only to overcome the clamping force of the first limiter 31, but also to overcome the static friction of the front roller 261 in the downward slide section 151. The stability of the front roller 261 is further improved.

[0108] Please refer to Figure 7 and Figure 8 In this embodiment, the limiting assembly further includes a second limiting assembly 32 disposed at the beginning of the guide rail 15 for limiting the rear roller 262. The second limiting assembly 32 includes a matching piece 321 fixedly disposed on one side of the guide rail 15 and a fastening piece 322 disposed on the other side of the guide rail 15 and opposite to the matching piece 321.

[0109] The convex end surface of the fastening member 322 facing the matching member 321 is composed of an introduction slope 322a for introducing the rear roller 262 into the machine body 10, an outlet slope 322b for exporting the rear roller 262 from the machine body 10, and a fastening plane 322c connected to the introduction slope 322a and the outlet slope 322b.

[0110] The distance between the tight plane 322c and the matching piece 321 is smaller than the width of the rear roller 262 to limit the rear roller 262 passing through the tight plane 322c from retreating. The distances between the leading-in slope 322a and the leading-out slope 322b and the matching piece 321 are gradually increased from the inside to the outside.

[0111] The included angle between the leading-out inclined surface 322b and the closing plane 322c is smaller than the included angle between the leading-in inclined surface 322a and the closing plane 322c, and the vertical distance between the two ends of the leading-out inclined surface 322b is larger than the vertical distance between the two ends of the leading-in inclined surface 322a.

[0112] In this embodiment, the function of the fitting member 321 is to fit with the tightening member 322 to produce an interference fit condition with the rear roller 262 to limit the rear roller 262 from retreating after passing through the tightening surface 322c of the tightening member 322. The tightening member 322 also plays a role in supporting the rear roller 262.

[0113] The distances from the lead-in slope 322a and the lead-out slope 322b to the mating piece 321 are both gradually increased from the inside to the outside, so that an lead-in area is formed between the lead-in slope 322a and the mating piece 321, and a lead-out area is formed between the lead-out slope 322b and the mating piece 321. The distance from the tight plane 322c to the mating piece 321 is smaller than the width of the rear roller 262, so that an interference fit area is formed between the tight plane 322c and the mating piece 321.

[0114] Therefore, the rear roller 262 enters the introduction area under the action of external force, and under the continuous external force, the rear roller 262 enters the interference fit area, and finally passes through the interference fit area and contacts with the lead-out inclined surface 322b and the matching piece 321 in the lead-out area, thereby limiting the retreat of the rear roller 262, thereby improving the stability of the rear roller 262, and further improving the stability of the transmission conveying device. Optionally, the width of the front roller 261 is less than or equal to the distance from the tight plane 322c to the matching piece 321, so that the front roller 261 can smoothly pass through the interference fit area.

[0115] Furthermore, the angle between the lead-out inclined surface 322b and the tight plane 322c is smaller than the angle between the lead-in inclined surface 322a and the tight plane 322c, and the vertical distance between the two ends of the lead-out inclined surface 322b is larger than the vertical distance between the two ends of the lead-in inclined surface 322a. Therefore, the opening of the lead-out area is longer in depth and narrower in opening relative to the lead-out area. At the same time, in the lead-out area, the area where the distance from the lead-out inclined surface 322b to the fitting 321 is smaller than the width of the rear roller 262 is longer in depth than the lead-in area, that is, the length of the interference fit area in the lead-out area is larger than the interference fit area in the lead-in area.

[0116] Therefore, it is much more difficult for the rear roller 262 to enter the interference fit area from the lead-out area than from the lead-in area.

[0117] The rear roller 262 enters the interference fit area from the lead-out area. Since the interference fit area in the lead-out area is longer, the rear roller 262 needs a longer period of continuous external force to overcome the resistance of the interference fit area.

[0118] When the transmission conveying device is running, the conveying mechanism 21 will rotate at the same time, thereby driving the entire conveying mechanism 25 to produce continuous vibration, and the vibration will cause the front and rear rollers (261, 262) to roll along the guide rail 15, so that the rear roller 262 will hit the fastening member 322, causing the rear roller 262 to enter the interference fit area from the lead-out area, or even pass through the interference fit area, thereby causing instability in the operation of this embodiment.

[0119] Since vibration is a frequency-dependent force, it cannot be a continuous force. The rear roller 262 needs a continuous force for a long time to pass through the interference fit area of ​​the lead-out area before entering the interference fit area. Therefore, the rear roller 262 is restricted in the lead-out area, thereby improving the stability of the rear roller 262. For example, under a force of 10 Newtons, the time required for the rear roller 262 to pass through the interference fit area of ​​the lead-out area is 3 seconds; while the 10 Newton force generated by the vibration can only be maintained for 2 seconds. In this way, under the force generated by the vibration, the rear roller 262 will move forward a short distance and cannot pass through the interference fit area. When the force generated by the vibration is paused, the interference fit area will react to the rear roller 262 and push the rear roller 262 back.

[0120] Therefore, the angle between the lead-out slope 322b and the closing plane 322c is smaller than the angle between the lead-in slope 322a and the closing plane 322c, and the vertical distance between the two ends of the lead-out slope 322b is larger than the vertical distance between the two ends of the lead-in slope 322a, making it easy for the rear roller 262 to enter but difficult to come out.

[0121] Furthermore, one end of the fastening member 322 having a convex end surface is hollowed out to have a plurality of through holes 3221 , wherein the density of the through holes 3221 on the side close to the inlet slope 322a is greater than the density of the through holes 3221 on the side close to the outlet slope 322b .

[0122] The purpose of setting the through hole 3221 is to reduce the rigidity of the fastening member 322, so that one end of the convex end face has stronger deformation performance, and the more through holes 3221 are set, the better its deformation performance. Therefore, in the fastening member 322, the deformation performance of the side close to the introduction slope 322a is stronger than the deformation performance of the side facing the outlet slope 322b. As a result, it is easier for the rear roller 262 to enter the interference fit area from the introduction area, while it is relatively more laborious for the rear roller 262 to enter the interference fit area from the outlet area.

[0123] Based on the above structure, the second limiting assembly 32 also includes a driving unit for driving the fastening piece 322 to slide, the driving unit includes a slide rail 323 slidably connected to the fastening piece 322, a fixed block 324 arranged on the back of the fastening piece 322, and a screw 325 passing through the fixed block 324 and fixedly connected to the fastening piece 322, the screw 325 and the fixed block 324 are threadedly connected, and the extension direction of the slide rail 323 is perpendicular to the extension direction of the guide rail 15.

[0124] Such a configuration makes the distance between the tightening member 322 and the matching member 321 adjustable, so as to facilitate adjusting the tightness of the two members on the rear roller 262 .

[0125] The quick freezer also includes a cold air circulation device for forcibly circulating cold air in the freezing chamber 11, the cold air circulation device including a fan 41 fixedly arranged between the cold air delivery branch pipes 33, a motor 42 arranged in the electric control room 13 for driving the fan 41 to rotate, and a guide plate 43 sleeved on the fan 41;

[0126] The guide plate 43 is provided with an opening, the fan 41 is arranged in the opening, and there is a space for ventilation between the guide plate 43 and the inner wall of the machine body 10; the air outlet direction of the fan 41 faces the inner wall of the machine body 10, and air outlets are arranged around the guide plate 43. Such an arrangement allows air flow to flow in from the middle area of ​​the guide plate 43 and flow out from the surrounding areas of the guide plate 43, forming an air flow cycle to accelerate the freezing effect of food.

[0127] In this embodiment, the operation process is:

[0128] First, the conveyor frame 25 carrying the conveying mechanism 21 is pushed into the freezer chamber 11 of the machine body 10; this process is as follows: under the push of external force, the front roller 261 of the conveyor frame 25 first rolls along the extension direction of the guide rail 15 on the bottom surface of the freezer chamber 11, passes through the second limit assembly 32 and reaches the lower descending section 151 of the guide rail 15; then the rear roller 262 contacts the introduction area formed by the introduction inclined surface 322a and the matching piece 321 of the fastening piece 322, and under the action of continuous thrust, the rear roller 262 passes through the introduction area formed by the fastening plane 322c and the matching piece 321. area, thereby abutting against the lead-out area formed by the lead-out inclined surface 322b and the matching piece 321, thereby limiting the retreat of the rear roller 262; at the same time, the front roller 261 pushes open the guide portion 315 of the first limit assembly 31 and causes the clamping portion 313 connected to the guide portion 315 to stretch upward, thereby pulling the detour portion 314, until the front roller 261 abuts against the abutting portion 312, and the front roller 261 has a downward trend on the downward sliding end 151, and at the same time, the clamping portion 313 is tightly attached to the front roller 261 due to the elastic restoring force of the detour portion 314, thereby limiting the rolling of the front roller 261;

[0129] Then, the reduction motor and the driving shaft 212 of the conveying mechanism 21 are connected via the coupling 215, and the sealing door 14 is closed.

[0130] Next, the conveying device in the electric control room 13 is started and starts to convey food. At the same time, the refrigeration device starts to convey refrigerated gas, the cold air circulation device is also started, and the fan 41 rotates.

[0131] The food enters from the top opening of the freezing chamber 11 of the machine body 10, and is conveyed to the end of the conveying mechanism 21 by the mesh belt 211 in the conveying mechanism 21, so that the bearing surface 243g in the loading and unloading groove 244 in the turner 24 in the turning mechanism receives the food; and during the rotation of the turner body 241 of the turner 24, the loading and unloading groove 244 is converted from a bearing state to a turning state, so that the food turns over; then the loading and unloading groove 244 enters an unloading state, and under the action of the sliding surface 243h, the food slides down to the baffle 23, and is guided to the next conveying mechanism 21 through the baffle 23; this is repeated until the food comes out of the lower end opening of the machine body 10.

[0132] This completes the operation process of this embodiment.

[0133] Compared with the prior art, the invention has the following beneficial effects: the quick freezer of the invention reduces the occupied space by means of the stacked reciprocating arrangement of multiple conveying mechanisms, and enables the food to be transferred and conveyed between the conveying mechanisms, thereby preventing the food from sticking together; at the same time, when the granular food is transferred from the conveying mechanism to the next conveying mechanism, it will roll and flip, further preventing the food from sticking together;

[0134] By setting up multiple conveying troughs to freeze different types of food, different types of food can be quickly frozen at the same time, thereby improving the freezing efficiency;

[0135] By setting up the flipping mechanism, the food can be flipped between the two conveying mechanisms and transferred to the next conveying mechanism. After multiple flipping, the food can be evenly frozen during transportation, which improves the freezing efficiency and avoids food sticking. In addition, the setting of the flipping mechanism can perform a secondary conduction on the food in height, which avoids the food from falling directly from the previous conveying mechanism to the next conveying mechanism and damaging the food.

[0136] By setting the limiting component, the conveying frame is limited, and the stability of the conveying mechanism in conveying work is improved; and by setting the first limiting component to limit the front roller and the second limiting component to limit the rear roller, the stability of the conveying mechanism is further improved; during the operation of the transmission conveying device, vibrations are continuously generated to make the roller roll, wherein the setting of the first limiting component and the lower sliding section of the guide rail increases the difficulty of the roller retreating, improves the stability of the roller, and avoids the situation of the roller retreating; the setting of the second limiting component further increases the difficulty of the roller retreating and improves the stability of the roller;

[0137] By setting up the cold air circulation device, the cold air circulation in the freezer is strengthened, and the freezing efficiency of the cold air on the food is improved.

[0138] Although the present invention has been shown and described with respect to one or more implementations, those skilled in the art will think of equivalent variations and modifications based on reading and understanding of this specification and the accompanying drawings. The present disclosure includes all such modifications and variations, and is limited only by the scope of the appended claims. In addition, although the specific features of the present disclosure have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations that may be desirable and advantageous for a given or specific application. Moreover, insofar as the terms "including", "having", "containing" or their variations are used in specific embodiments or claims, such terms are intended to be included in a manner similar to the term "comprising".

[0139] In summary, although the present invention has been disclosed in the above embodiments, the serial numbers before the embodiments, such as "first", "second", etc., are only used for convenience of description and do not limit the order of the embodiments of the present invention. In addition, the above embodiments are not used to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined in the claims.

Claims

1. A transmission conveying device, It is characterized in that include: A machine body, a conveying frame, a limiting assembly, a conveying mechanism arranged on the conveying frame, and rollers arranged at the four corners of the bottom of the conveying frame; The plurality of conveying mechanisms are arranged in a stacked and spaced manner, and the transmission directions of adjacent conveying mechanisms are opposite. The plurality of conveying mechanisms are used to convey food into the body and reciprocate in the body. One side of the body is provided with a sealing door for the conveying frame to enter the body or exit the body. The bottom surface of the body is provided with a guide rail for rolling connection with the roller. The roller comprises a roller body and a groove ring recessed on the circumferential surface of the roller body and used for rolling cooperation with the guide rail. The limiting assembly is used to limit the rolling of the roller. The roller comprises a front roller away from the sealing door and a rear roller close to the sealing door. The limiting assembly comprises a first limiting assembly arranged at the end of the guide rail for limiting the front roller, and a second limiting assembly arranged at the beginning of the guide rail for limiting the rear roller. The first limiting assembly includes a supporting portion fixedly connected to the body, an abutting portion extending from a free end of the supporting portion and forming a matching groove ring, a clamping portion cooperating with the abutting portion for clamping the front roller, a detour portion connected between the abutting portion and the clamping portion, and a guiding portion formed at the free end of the clamping portion; The detour portion is in an inverted U-shape and has a restoring force of elastic deformation, the abutment portion, the detour portion and the clamping portion constitute an elastic clamping structure, and the guide portion is in a V-shape to guide the front roller to enter or exit the range of the elastic clamping structure; When the first limiting assembly limits the front roller, the detour portion is in an elastically stretched state, and the abutment portion and the clamping portion are tightly buckled with the groove ring to limit the front roller; One end of the guide rail close to the first limiting assembly is in a downward sliding state; when the first limiting assembly limits the front roller, the front roller has a downward sliding trend and abuts against the supporting portion.

2. The transmission conveying device according to claim 1, It is characterized in that The second limiting assembly includes a matching piece fixedly arranged on one side of the guide rail and a fastening piece arranged on the other side of the guide rail and opposite to the matching piece; The convex end surface of the fastening member facing one end of the matching member is composed of an introduction slope for introducing the rear roller into the machine body, an export slope for exporting the rear roller from the machine body, and a fastening plane connected to the introduction slope and the export slope.

3. The transmission conveying device according to claim 2, It is characterized in that The distance from the tightening plane to the matching piece is smaller than the width of the rear roller, and the width of the front roller is smaller than or equal to the distance from the tightening plane to the matching piece, so as to limit the retreat of the rear roller passing through the tightening plane, and the distances from the lead-in slope and the lead-out slope to the matching piece gradually increase from the inside to the outside.

4. The transmission conveying device according to claim 2, It is characterized in that The included angle between the leading-out inclined surface and the tight-fitting plane is smaller than the included angle between the leading-in inclined surface and the tight-fitting plane, and the vertical distance between the two ends of the leading-out inclined surface is larger than the vertical distance between the two ends of the leading-in inclined surface.

5. The transmission conveying device according to claim 2, It is characterized in that One end of the fastening member provided with the convex end surface is hollowed out to provide a plurality of through holes, wherein the density of the through holes on the side close to the introduction slope is greater than the density of the through holes on the side close to the exit slope.

6. The transmission conveying device according to claim 2, It is characterized in that The second limiting assembly also includes a driving unit for driving the fastening piece to slide, the driving unit includes a sliding rail slidably connected to the fastening piece, a fixed block arranged on the back of the fastening piece, and a screw rod passing through the fixed block and fixedly connected to the fastening piece, the screw rod and the fixed block are threadedly connected, and the extension direction of the sliding rail is perpendicular to the extension direction of the guide rail.

7. The transmission conveying device according to claim 1, It is characterized in that The transmission conveying device also includes: A driving mechanism, used for driving the conveying mechanism to rotate and convey; A baffle, arranged between the conveying mechanisms and located on one side of the conveying end of the conveying mechanism, so as to allow food to enter the next conveying mechanism; The turning mechanism comprises a turning device for receiving and turning the food and unloading the food to the next conveying mechanism and a motor for driving the turning device to rotate. The turning device is arranged between the conveying mechanism and the baffle plate, and is used to turn the food conveyed by the conveying mechanism and transfer it to the baffle plate or the conveying head end of the next conveying mechanism. The conveying mechanism comprises: Mesh belts, used to transport food; A driving shaft is arranged at one end of the mesh belt, and the rotation direction of the turning device is consistent with the rotation direction of the driving shaft; A driven shaft is arranged at the other end of the mesh belt, and the driven shaft cooperates with the driving shaft to drive the mesh belt to rotate and transport; A transmission gear, fixedly arranged at one end of the driving shaft facing away from the mesh belt; One of the driving shafts of the conveying mechanisms with the same conveying direction is connected to the driving mechanism through a coupling, and the driving shafts between the conveying mechanisms with the same conveying direction are rotationally connected through a chain; The mesh belt includes a mesh belt body that rotates around the driving shaft and the driven shaft, and a plurality of raised rings that are convexly arranged on the mesh belt body and extend around the conveying track of the mesh belt body. A conveying groove for conveying food is defined between adjacent raised rings and the mesh belt body to convey different types of food.

8. A quick freezing machine, It is characterized in that A transmission and conveying device comprising any one of claims 1 to 7, further comprising a machine body, a refrigeration device and a cold air circulation device, wherein the machine body comprises a freezing chamber for quick-frozen food, a drive installation chamber independently arranged on one side of the freezing chamber, and an electric control chamber independently arranged on the other side of the freezing chamber; The conveying mechanism is arranged in the freezing chamber, the reduction motor of the driving mechanism of the transmission conveying device is installed in the driving installation chamber, and the rotating shaft of the reduction motor penetrates into the freezing chamber and is connected to the driving shaft of the conveying mechanism through a coupling; The refrigeration device comprises a cold air delivery main pipe arranged in the electric control room, a control valve arranged on the cold air delivery main pipe, cold air delivery branch pipes arranged on both sides of the inner wall of the freezing chamber and connected to the cold air delivery main pipe, and a nozzle arranged on the cold air delivery branch pipe; The cold air circulation device comprises a fan fixedly arranged between the cold air delivery branch pipes, a motor arranged in the electric control room for driving the fan to rotate, and a guide plate sleeved on the fan; The guide plate is provided with an opening, the fan is arranged in the opening, and there is a space for ventilation between the guide plate and the inner wall of the body; The air outlet direction of the fan faces the inner wall of the machine body, and air outlets are arranged around the guide plate.

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