CN113104267A - Cooling system on bread production line and working method of cooling system - Google Patents

Abstract

The invention relates to the field of food processing, in particular to a cooling system on a bread production line and a working method thereof, wherein the cooling system comprises a roller conveyor, a pushing conveyor and a cold source device. When bread is conveyed to a position close to the roller conveyor, the pushing mechanism of the pushing conveyor pockets the bread and pushes the bread into the roller conveyor, so that the bread moves on the rollers of the roller conveyor. The cold water source of circulation in the condenser pipe of this in-process cold source device makes the temperature on roller surface descends, thereby make the bread temperature with the roller contact descend, and the bread is in two baffles all the time in the transportation process with the roller contact, in the narrow and small cooling space that push pedal and apron constitute, send cold air into cooling space through the fan of first support body bottom, carry out solitary cooling with the bread to in the cooling space, this mode is compared in the improvement cooling efficiency that natural cooling's mode can be very big, and refrigerated temperature is controllable, avoid starch ageing and influence the taste of bread.

Description

Cooling system on bread production line and working method of cooling system

Technical Field

The invention relates to the field of food processing, in particular to a cooling system on a bread production line and a working method of the cooling system.

Background

In the bread making process on the production line, the bread is generally sliced after fermentation and baking.

When the bread is produced fully automatically, the bread needs to be stirred, rolled, proofed, baked, cooled and packaged. Wherein, the step of cooling before packaging is to prevent the bread just taken out of the oven from being too hot and being unable to be directly packaged. Because the bread production line is continuous production, the traditional bread production line is mostly directly conveyed for a long time to naturally cool the bread when the bread is cooled, and the cooling time is longer in the mode, so that the whole production efficiency of the bread is low. And the production line required naturally is longer, causing the problem that the floor area is large.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a cooling system for bread production line and a working method thereof.

The invention adopts the following technical scheme:

a cooling system on a bread production line is characterized by comprising a roller conveyor, a pushing conveyor and a cold source device;

the roller conveyor comprises a first rack and a plurality of rollers, air holes are distributed on the surfaces of the rollers, the rollers are sequentially distributed on the first rack along the bread process direction, the axes of the rollers are fixed on the first rack, the rollers are positioned on the rack to rotate, a conveying surface for conveying bread is formed, a plurality of partition plates are fixed on the conveying surface, and a conveying gap for conveying the bread is formed between every two adjacent partition plates;

the pushing conveyor comprises a second rack and a plurality of pushing mechanisms, each pushing mechanism comprises a connecting rod, a plurality of push plates and a cover plate, the cover plates are sequentially fixed on the connecting rod along the length direction of the connecting rod, each cover plate is vertically connected with the push plates, the push plates are fixed at one ends, close to the baking equipment, of the cover plates, and the connecting rods move along the process direction of the bread to drive the push plates to move;

the cold source device comprises a water tank, a water pump, a condenser pipe and a fan, wherein a cold water source is arranged in the water tank, the water pump conveys the cold water source in the water tank to the condenser pipe, and one end of the condenser pipe, which is far away from the water pump, is connected to the water tank;

the first rack is connected with the output end of the bread baking equipment, the pushing mechanism is positioned on the conveying surface of the roller conveyor, and the push plates are respectively positioned in each conveying gap formed by the partition plate to move; the condensation pipe comprises a plurality of straight pipes and U-shaped pipes, the straight pipes are fixedly arranged on the axle center of each roller in the first rack in a penetrating mode, two ends of each straight pipe extend out of two sides of the first rack respectively, the end portions of every two adjacent straight pipes are communicated through the connection of the U-shaped pipes, the first straight pipe of the cooling device at one end of the first rack is connected to the water pump, and the first straight pipe at the other end of the cooling device is connected to the water tank; the fan is fixed below the conveying surface of the first rack.

As a further improvement of the cooling system, the push conveyor further comprises a closed-loop conveying chain and a closed-loop guide rail, the conveying chain and the guide rail are arranged on two sides of the second machine frame above the roller conveyor, the two conveying chains run synchronously, and the two guide rails are fixedly connected to the second machine frame; two ends of the connecting rod penetrate through the chain links corresponding to the two conveying chains and then are fixedly connected with rolling parts, the rolling parts are sequentially provided with two rollers along the technical direction of bread, and the two rollers are attached to the inner side surface of the guide rail to move.

As a further improvement of the cooling system, a movable plate is fixed above the guide rail, the movable plate and the guide rail are fixedly connected by a connecting plate at one side of the outer side edge of the second rack, and when the connecting rod moves to the track above the guide rail under the driving of the conveying chain, the roller is located on the movable plate to move.

As a further improvement of the cooling system, an adjusting nut is fixed at the end of the cover plate, the adjusting nut is in threaded connection with an adjusting screw rod, the push plate is provided with a vertically-penetrating strip-shaped hole, and the adjusting bolt penetrates through the strip-shaped hole and then is in threaded connection with the adjusting nut for fastening.

As a further improvement of the above cooling system, the second frame is composed of a frame body and a machine foot fixed to the bottom of the frame body, and the machine foot is adjustable in height.

As a further improvement of the cooling system, a foot cup assembly is fixedly arranged at the bottom of the machine foot, the foot cup assembly comprises a foot cup, a fixing screw rod and a fixing nut, the fixing screw rod is fixed on the foot cup, and the fixing nut is in threaded connection with the fixing screw rod; the bottom surface of the machine leg is provided with a threaded hole, the fixing screw rod is connected to the threaded hole in the bottom surface of the machine leg through threads from bottom to top, and the fixing nut is abutted to the bottom surface of the machine leg.

As a further improvement of the cooling system, the roller is a hollow pipe fitting, bearings are fixed at two ends of the roller, and the two bearings are fixedly sleeved on the straight pipe in a penetrating mode.

As a further improvement of the cooling system, the partition plates are sequentially and fixedly connected with a plurality of fixing rods along the length direction of the partition plates, and the lower ends of the fixing rods penetrate through a gap between every two adjacent rollers and then are fixed to the first rack.

As a further improvement of the cooling system, the roller conveyor is sequentially connected with two cold source devices along the process direction of the bread, wherein the temperature of the cold source device close to the baking equipment is higher than that of the cold source device far away from the baking equipment.

The working method of the cooling system on the bread production line comprises the following steps:

s 1: the height of the cover plate relative to the roller is set according to the height of the baked bread, namely the height is slightly higher than that of the bread;

s 2: controlling the cooling device to operate, after 20-30 min, controlling a baking device to bake the surface, and controlling the conveying chain to start to operate;

s 3: when the bread is conveyed to be close to the roller conveyor, the bread is pocketed by the pushing mechanism, the bread is pushed onto the roller conveyor by the pushing mechanism along with the operation of the conveying chain, the bread 6 moves towards the packaging equipment on a roller of the roller conveyor, the temperature of the surface of the roller is reduced by a cold water source circulating in the condensation pipe in the moving process, so that the temperature of the bread in contact with the roller is reduced, the bread is always positioned in a narrow cooling space formed by the two clapboards, the push plate and the cover plate in the conveying process of the bread in contact with the roller, and the cold air is sent by the fan to carry out independent cooling on the bread in the cooling space;

s 4: along with the operation of the conveying chain, the bread is pushed out to the packaging equipment from the roller conveyor by the pushing mechanism, and the cooling of the bread is completed.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: one end of the roller conveyor is connected with a conveying belt of baking equipment, and the other end of the roller conveyor is connected with a conveying belt of packaging equipment or a conveying belt of cutting equipment. When the bread is conveyed to be close to the roller conveyor, a pushing mechanism of the pushing conveyor is pushed to pocket the bread and push the bread onto the roller conveyor, so that the bread moves towards the packaging equipment on rollers of the roller conveyor. Remove the cold water source of the intraductal circulation of condenser of in-process cold source device and make the temperature on roller surface descends, thereby make the bread temperature with the roller contact descend, and the bread is in two baffles all the time in the transportation process with the roller contact, in the narrow and small cooling space that push pedal and apron constitute, the fan operation through first support body bottom sends into cold air cooling space, carry out solitary cooling with the bread in the cooling space, compare in the cooling efficiency of the improvement bread that natural cooling's mode can be very big, and need not the conveyer belt of overlength and carry the bread, consequently the area of production line still can effectually be saved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic side view of the whole structure of the present invention.

Fig. 3 is an enlarged schematic view of a point a in fig. 2.

Fig. 4 is a schematic perspective view of the present invention with the second frame, the conveyor chain and the upper half of the guide rail hidden.

Fig. 5 is an enlarged schematic view of B in fig. 4.

Fig. 6 is a schematic perspective view of a roller conveyor.

Fig. 7 is an enlarged schematic view at C in fig. 6.

Fig. 8 is a cross-sectional view of the front of the roller conveyor.

Fig. 9 is an enlarged schematic view at D in fig. 8.

Fig. 10 is a schematic top view of the heat sink device connected to the first frame.

Fig. 11 is a perspective view of the push conveyor.

Fig. 12 is an enlarged schematic view at E in fig. 11.

Fig. 13 is a perspective view of the pushing mechanism.

Fig. 14 is a cross-sectional view of the front of the push conveyor.

Fig. 15 is an enlarged sectional view at F in fig. 14.

FIG. 16 is a schematic top view of a roller conveyor engaging a conveyor belt of a baking apparatus and a conveyor belt of a packaging apparatus.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1 and 2, a cooling system for bread production line according to the present embodiment includes a roller conveyor 1, a push conveyor 2, and a cooling source device 3. The main body of the pushing conveyor 2 is arranged above the roller conveyor 1, and the cold source device 3 is connected to the roller conveyor 1.

Referring to fig. 6, the roller conveyor 1 includes a first frame 11 and a plurality of rollers 12. The rollers 12 are sequentially distributed on the first frame 11 along the process direction of the bread, so as to form a conveying surface for conveying the bread 6, wherein the process direction of the bread is the direction in which the bread shown in the figure 2 is dried by the drying device 4 and then output to the packaging device 5. And, one end of the roller conveyor 1 is connected with the conveyor belt of the baking device 4, and the other end is connected with the conveyor belt of the packaging device 5 or the conveyor belt of the cutting device, preferably, a horizontal flat plate 14 can be fixed outside the end surfaces of the two ends of the first frame 11, and the upper surface of the flat plate 14 and the conveyor belt 41 of the baking device 4, the conveyor belt 41 of the packaging device 5, and the conveyor surfaces formed by the rollers 12 are all located on the same plane, so that the bread 6 can be smoothly transited from the baking device 4 to the roller conveyor 1, and from the roller conveyor 1 to the packaging device 5.

With reference to fig. 1 and 2, the cold source device 3 includes a water tank 31, a water pump 33, a condenser 32 and a fan 34, the water tank 31 is fixed on a side of the first frame 11, a cold water source is disposed in the water tank 31, and a condenser (not shown) can be installed in the water tank 31 and a water source is poured into the water tank, so that the cold water source is formed by the cold water source when the temperature of the water source is reduced by the condenser. The condensation pipe 32 comprises a plurality of straight pipes 322 and U-shaped pipes 321. The first rack 11 is sequentially fixed with a plurality of straight pipes 322 along the technical direction of the bread, two ends of each straight pipe 322 respectively extend out of two sides of the first rack 11, and the end portions of two adjacent straight pipes 322 are connected by a U-shaped pipe 321 to be communicated, so as to form a continuous S-shaped pipeline arranged on the upper surface of the first rack 11 as shown in fig. 10. The first straight pipe 322 of the cooling device 3 at one end of the first frame 11 is connected to the water pump 33, the water pump 33 is connected to the lower end of the water tank 31, and the first straight pipe of the cooling device 3 at the other end of the first frame 11 is connected back to the water tank 31 through a pipeline, that is, the two ends of the condenser pipe 32 are respectively connected to the water pump 33 and the water tank 31, so that the cold water source in the water tank 31 is conveyed to the condenser pipe 32 through the water pump 33, and a circulation loop of the cold water source sequentially flowing through the water tank 31 → the straight pipe 322 … … → the straight pipe 322 → the water tank 31 is formed.

Referring to fig. 7 to 9, the roller 12 is a hollow tubular structure, and a plurality of air holes 121 are distributed on the surface of the roller 12. The rollers 12 are respectively sleeved outside the straight pipes 322 of the first frame 11 in a one-to-one correspondence manner, so that the rollers 12 rotate relative to the straight pipes 322, further, bearings 122 are fixed in two ends of each roller 12, and the two bearings 122 are fixed on the straight pipes 322 in a penetrating manner, so that the axes of the rollers 12 are fixed on the first frame 11, and the rollers 12 are positioned on the frame 11 to rotate, so as to form a conveying surface for conveying bread 6, namely the upper surface of the first frame 11 shown in fig. 6. Preferably, the diameter of the rollers 12 is set to be 30-40 mm, and the distance between adjacent rollers 12 is correspondingly controlled to be about 10-15 mm, so that the conveying surface formed by each roller 12 can approach to a plane more, and the bread can be conveyed stably.

Referring to fig. 10, the first frame 11 is fixed with a plurality of partition plates 13 on the conveying surface formed by the rollers 12, a conveying gap 132 for conveying bread is formed between two adjacent partition plates 13, and the bread 6 in the conveying process can be prevented from moving left and right relative to the first frame 11 by the separation of the partition plates 13. The partition 13 may be fixed in a manner that the partition 13 is sequentially and fixedly connected with a plurality of fixing rods 131 along the length direction thereof, and the lower ends of the fixing rods 131 penetrate through the gap between two adjacent rollers 12 and then are fixed to the first frame 11. Referring again to fig. 2, the fan 34 is fixed below the conveying surface, and when the fan is operated, the fan drives the airflow upwards, i.e. blows air onto each of the rollers 12. Because the surface of the roller 12 is provided with the air holes 121, when the fan 34 runs, the fan drives the air flow to pass through the air holes to the straight pipe 322 of the condensation pipe 32, so that the cold air formed on the surface of the condensation pipe 32 is upwards taken out to the bread 6 conveyed on the roller 12 through the air holes 121 of the roller 12, and the effect of cooling the bread 6 is achieved.

With continued reference to fig. 1 and 2, the push conveyor 2 includes a second frame 21, a conveyor chain 22, a guide rail 23, and a plurality of push mechanisms 24. The second frame 21 comprises support body 212 and the undercarriage 211 fixed to the bottom of support body 212, the both sides of support body 212 all set up conveying chain 22 and guided way 23, and two the synchronous operation of conveying chain 22, two the equal fixed connection of guided way 23 is in second frame 21. Referring to fig. 4 and 14 again, a transmission shaft 223 is disposed at each end of the frame body 212, each end of the transmission shaft 223 is fixedly connected to a bearing seat 224, and the bearing seat 224 is fixed to the frame body 212. Two ends of the two transmission shafts 223 are fixed with chain wheels 222, the two chain wheels 222 on the same side of the frame body 212 are engaged with one of the transmission chains 22, and one of the transmission shafts 1223 is driven by a transmission motor (not shown) fixed outside the frame body 212. When the driving motor operates to drive the transmission shaft 223 to rotate, the two conveying chains 22 can be driven to operate synchronously. The guide rail 23 is fixed with a plurality of connecting plates 232 at one side of the outer side of the second frame 21, and each connecting plate 232 is fixed on the frame body at the same time, so that the guide rail 23 is fixed.

Referring to fig. 11 and 13, the pushing mechanism 24 includes a connecting rod 241, and a plurality of pushing plates 243 and a cover plate 242. The cover plate 242 is fixed below the connecting rod 241, specifically, may be fixedly connected through other rod bodies, and a plurality of cover plates 242 are sequentially fixed at equal intervals along the length direction of the axial lead of the connecting rod 234, and each cover plate is connected with a push plate 243. The pushing plate 243 is perpendicular to the cover plate 242, and the pushing plate 243 is fixed at one end of the cover plate 242 near the toasting device 4, and each pushing plate is respectively located in the conveying space 132 between each two adjacent partition plates. Referring to fig. 3 and 4 again, when the conveyor chain 22 moves and drives the connecting rod 241 to move along the technological direction of the bread, the cover plate 242 and the pushing plate 243 are driven to move simultaneously, the pushing plate 243 can push the bread 6 to move on the conveying surface formed by the rollers 12, and the bread 6 is always positioned in two in the conveying process contacted with the rollers 12, the partition plate 13, the pushing plate 243 and the cover plate 242 form a narrower cooling space, which is equivalent to cooling the single bread 6 in the narrower cooling space by the cold air blown upwards by the fan 34, so that the cooling efficiency of the bread 6 can be improved more effectively.

Further, as shown in fig. 12, two ends of the connecting rod 241 penetrate through the corresponding chain links 221 of the two conveying chains 22 and then are fixedly connected with the rolling member 246, the rolling member 246 is sequentially provided with two rollers 247 along the process direction of the bread 6, and the two rollers 247 are attached to the inner side surface of the guide rail 23 to move. Specifically, as shown in the two enlarged positions of fig. 14, the cross section of the guide rail 23 is a forward or reverse L-shaped structure, so that the plane at the lower end of the guide rail 23 can form a lower track, and thus the two rollers 247 are attached to the inner side plane below the guide rail 23 to move, and the upper track is formed above the guide rail 23 by the fixed moving plate 231, so that the two rollers 247 are inserted between the moving plate 231 and the plane at the upper end of the guide rail 23 to move, that is, the rollers 247 are attached to the inner side plane above the guide rail 23 to move, so that when the connecting rod 241 is driven by the conveyor chain 22 to move to the upper track of the guide rail 23, the rollers 247 are located on the moving plate 231 to move to prevent the conveyor chain 22 from sagging, and an arc-shaped moving plate (not shown) is also fixed on the inner side of the arc-shaped turning track at both ends of the guide rail 23, the arcuate guide plate engages the moving plate 231 above the guide rail 23 to restrain the roller 247 between the arcuate moving plate and the inner side of the guide rail 23. The moving plate 231 is fixed above the inside of the guide rail 23, and the moving plate 231 and the guide rail 23 are also fixedly connected by the connecting plate 232 on the outer side of the second frame 21. The two rollers 247 provided at the two ends of the connecting rod 241 move along the guide rail 23 to keep the pushing mechanism 24 always in one direction with respect to the chain unit 221 of the conveying chain 22, so as to prevent the pushing plate 243 from swinging during pushing the bread 6, or the pushing plate 243 from turning downwards when moving upwards above the frame body 212, and then moving to the roller 12 again after being influenced, as shown in the right side of fig. 2, which is equivalent to making the pushing mechanism 24 catch the bread 6 after moving downwards, so as to push the bread 6.

Referring to fig. 13, an adjusting nut 244 is fixed at an end of the cover plate 242, an adjusting screw 251 is connected to the adjusting nut 244 through a screw thread, the push plate 243 is provided with a strip-shaped hole 2431 which vertically penetrates through the push plate 243, the adjusting bolt 245 penetrates through the strip-shaped hole 2431 and then is connected to the adjusting nut 244 through a screw thread to be fastened, so that the push plate 243 and the cover plate 242 are fixed, and the height of the push plate 243 relative to the connecting rod 241 can be adjusted by pushing the push plate 243 upwards or downwards along the strip-shaped hole 2431 and then connecting the adjusting bolt 245 to be fastened, so that the push plate 243 is prevented from contacting the roller 12 and the conveyor chain 22 is. Further, referring to fig. 15 again, a foot cup assembly 25 is fixedly arranged at the bottom of the machine foot 211, the foot cup assembly 25 includes a foot cup 252, a fixing screw 251 and a fixing nut 253, the fixing screw 251 is fixed on the foot cup 252, and the fixing nut 253 is in threaded connection with the fixing screw 251; the bottom surface of the machine leg 211 is provided with a threaded hole, the fixing screw 251 is connected to the threaded hole in the bottom surface of the machine leg 211 from bottom to top in a threaded manner, and the fixing nut 253 abuts against the bottom surface of the machine leg 211. When the bread rack is used, the fixing nut 253 is rotated downwards to have a certain distance with the bottom surface of the machine leg 211, the foot cup 252 is rotated upwards or downwards, the fixing screw 251 extends into or extends out of the machine leg 211, and then the fixing nut 253 is rotated to abut against the bottom surface of the machine leg 211, so that the height of the machine leg 211 can be adjusted, the height of the whole rack body 212 is adjusted, the pushing mechanisms 24 are uniformly lifted or lowered, bread with different thicknesses can be suitable for being pressed by the cover plate 242, and the bread can be prevented from being pressed by the cover plate 242.

Preferably, as shown in fig. 16, a plurality of dividing lines 42 are sequentially divided along the conveying direction on the conveying belt of the toasting device 4 for toasting bread as a mark, and when the bread 6 is put into the toasting device 4, the bread 6 is sequentially put between two dividing lines 42 which are relatively close to each other, so that the bread on the toasting device 4 is conveyed at equal intervals along the conveying direction. The specific distance may be the same as the distance between two adjacent pushing mechanisms 24 on the pushing conveyor 2 along the conveying direction of the conveying chain 22, and the moving speed of the pushing mechanisms 24 is the same as the speed of conveying the bread 6 by the baking device 4, so that after each group of pushing mechanisms 24 moves downwards, a row of baked bread 6 can be caught, and the bread 6 is conveyed to the conveying surface formed by the rollers 12.

In addition, the invention can be adapted to a set of control system, which can be a PLC controller, for controlling the operation of the cold source device and the electric components of the pushing conveyor, and the baking equipment, the packaging equipment or the cutting equipment. Specifically, the working method of the invention is as follows:

s 1: the height of the cover plate 242 relative to the roller 12 is set according to the height of the baked bread 6, namely, the height is slightly higher than that of the bread 6;

s 2: controlling the cooling device 3 to operate, after 20-30 min, controlling the baking equipment 4 to bake the bread, and controlling the conveying chain 22 to start to operate, wherein the waiting time enables the condensation pipe 32 of the cooling device 3 to be lowered to the required temperature, so that the bread 6 can be effectively cooled;

s 3: when the bread 6 is conveyed to be close to the roller conveyor 1, the bread is pocketed by the pushing mechanism 24, and along with the operation of the conveying chain 22, the bread 6 is pushed onto the roller conveyor 1 by the pushing mechanism 24, so that the bread 6 moves towards the packaging equipment 5 on the roller 12 of the roller conveyor 1, the temperature of the surface of the roller 12 is reduced by the cold water source circulating in the condensation pipe 32 in the moving process, the temperature of the bread 6 contacting with the roller 12 is reduced, the bread 6 is always in the narrow cooling space formed by the two partition plates 13, the push plate 243 and the cover plate 242 in the conveying process of contacting with the roller 12, and the bread 6 in the cooling space can be cooled independently by the cold air sent by the fan 34, so that the cooling efficiency of the bread 6 can be improved more effectively;

s 4: with the operation of the conveying chain 22, the bread 6 is pushed out from the roller conveyor 1 to the packaging equipment 5 by the pushing mechanism 24, and the cooling of the bread 6 is completed.

Preferably, the roller conveyor 1 is sequentially connected with two cold source devices 3 along the process direction of the bread, wherein the temperature of the cold source device 3 close to the baking equipment 4 is higher than that of the cold source device 3 far away from the baking equipment 4, and the structure enables the bread to be cooled in the environment with gradually reduced temperature in the cooling process on the roller conveyor 1, so that the bread 6 is prevented from being cracked on the surface of the bread due to the fact that the bread enters the low-temperature environment too quickly from the baked high-temperature environment. In addition, the temperature of the refrigeration of the condenser of the cold source device 3 can be controlled by the controllable control system, which is equivalent to indirectly controlling the temperatures of the roller 12 and the cooling space 132 by controlling the temperature of the cold water source, so that the problem that the taste of the bread is influenced by the aging of starch accelerated due to too low temperature is avoided.

As can be seen from the above working process of the present invention, after the bread 6 is cooled, since the push plates 243 fixedly connected to the pushing mechanism 24 are arranged in a row at equal intervals, the bread 6 can be moved in a row transversely to the conveying direction thereof and the bread 6 in each row can be moved at equal intervals in the process of pushing the bread 6 to cool; at the same time, the bread 6 also moves in the gap between two adjacent partition boards 13, so that the bread 6 in each row can be correspondingly conveyed in a queue relative to the conveying direction. Therefore, after the bread 6 is cooled, if the bread 6 needs to be sliced, the bread 6 can be automatically conveyed to the cutting device (corresponding to the position of the packaging device 5 in the attached drawing 15) in order, so that the bread 6 conveyed continuously can be uniformly positioned and cut by the cutting device, and the production efficiency of the bread 6 can be improved.

In summary, one end of the roller conveyor 1 of the present invention is connected to the conveyor belt of the baking device 4, and the other end is connected to the conveyor belt of the packaging device 5 or the conveyor belt of the cutting device. When the bread 6 is conveyed to be close to the roller conveyor 1, the pushing mechanism 24 pockets the bread and pushes the bread 6 onto the roller conveyor 1, so that the bread 6 moves towards the packaging equipment 5 on the roller 12 of the roller conveyor 1, the temperature of the surface of the roller 12 is reduced by the cold water source circulating in the condensation pipe 32 in the moving process, so that the temperature of the bread 6 contacting with the roller 12 is reduced, the bread 6 is always positioned in a narrow cooling space formed by the two partition plates 13, the push plate 243 and the cover plate 242 in the conveying process of contacting with the roller 12, the cold air is sent into the cooling space by the operation of the fan 34 at the bottom of the first frame body 11 to independently cool the bread 6 in the cooling space, the cooling efficiency of the bread 6 can be greatly improved compared with the natural cooling mode, and the bread is not required to be conveyed by an overlong conveying belt, therefore, the floor area of the production line can be effectively saved.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims (10)

1. A cooling system on a bread production line is characterized by comprising a roller conveyor, a pushing conveyor and a cold source device;

the roller conveyor comprises a first rack and a plurality of rollers, air holes are distributed on the surfaces of the rollers, the rollers are sequentially distributed on the first rack along the bread process direction, the axes of the rollers are fixed on the first rack, the rollers are positioned on the rack to rotate, a conveying surface for conveying bread is formed, a plurality of partition plates are fixed on the conveying surface, and a conveying gap for conveying the bread is formed between every two adjacent partition plates;

the pushing conveyor comprises a second rack and a plurality of pushing mechanisms, each pushing mechanism comprises a connecting rod, a plurality of push plates and a cover plate, the cover plates are sequentially fixed on the connecting rod along the length direction of the connecting rod, each cover plate is vertically connected with the push plates, the push plates are fixed at one ends, close to the baking equipment, of the cover plates, and the connecting rods move along the process direction of the bread to drive the push plates to move;

the cold source device comprises a water tank, a water pump, a condenser pipe and a fan, wherein a cold water source is arranged in the water tank, the water pump conveys the cold water source in the water tank to the condenser pipe, and one end of the condenser pipe, which is far away from the water pump, is connected to the water tank;

the first rack is connected with the output end of the bread baking equipment, the pushing mechanism is positioned on the conveying surface of the roller conveyor, and the push plates are respectively positioned in each conveying gap formed by the partition plate to move; the condensation pipe comprises a plurality of straight pipes and U-shaped pipes, the straight pipes are fixedly arranged on the axle center of each roller in the first rack in a penetrating mode, two ends of each straight pipe extend out of two sides of the first rack respectively, the end portions of every two adjacent straight pipes are communicated through the connection of the U-shaped pipes, the first straight pipe of the cooling device at one end of the first rack is connected to the water pump, and the first straight pipe at the other end of the cooling device is connected to the water tank; the fan is fixed below the conveying surface of the first rack.

2. A cooling system for bread making line as claimed in claim 1, wherein: the pushing conveyor also comprises a closed-loop conveying chain and a closed-loop guide rail, the conveying chain and the guide rail are arranged on two sides above the roller conveyor on the second rack, the two conveying chains run synchronously, and the two guide rails are fixedly connected to the second rack; two ends of the connecting rod penetrate through the chain links corresponding to the two conveying chains and then are fixedly connected with rolling parts, the rolling parts are sequentially provided with two rollers along the technical direction of bread, and the two rollers are attached to the inner side surface of the guide rail to move.

3. A cooling system for bread making line as claimed in claim 2, wherein: and a movable plate is fixed above the guide rail, the movable plate and the guide rail are fixedly connected by a connecting plate at one side of the outer side edge of the second rack, and when the connecting rod is driven by the conveying chain to move to the upper track of the guide rail, the roller is positioned on the movable plate to move.

4. A cooling system for bread making line as claimed in claim 1, wherein: the end part of the cover plate is fixed with an adjusting nut, the adjusting nut is in threaded connection with an adjusting screw rod, the push plate is provided with a vertically-penetrated strip-shaped hole, and the adjusting bolt penetrates through the strip-shaped hole and then is in threaded connection with the adjusting nut to be fastened.

5. A cooling system on bread production line as claimed in any one of claims 1 to 4, characterized in that: the second frame comprises support body and the machine foot of fixing to the support body bottom, machine foot height-adjustable.

6. A cooling system on bread production line as claimed in claim 5, characterized in that: a foot cup assembly is fixedly arranged at the bottom of the machine foot and comprises a foot cup, a fixing screw rod and a fixing nut, the fixing screw rod is fixed on the foot cup, and the fixing nut is in threaded connection with the fixing screw rod; the bottom surface of the machine leg is provided with a threaded hole, the fixing screw rod is connected to the threaded hole in the bottom surface of the machine leg through threads from bottom to top, and the fixing nut is abutted to the bottom surface of the machine leg.

7. A cooling system for bread making line as claimed in claim 1, wherein: the roller is a hollow pipe fitting, bearings are fixed at two ends of the roller, and the two bearings are fixedly sleeved on the straight pipe in a penetrating mode.

8. A cooling system for bread making line as claimed in claim 1, wherein: the partition board is fixedly connected with a plurality of fixing rods in sequence along the length direction of the partition board, and the lower ends of the fixing rods penetrate through a gap between every two adjacent rollers and then are fixed to the first rack.

9. A cooling system for bread making line as claimed in claim 1, wherein: the roller conveyor is sequentially connected with two cold source devices along the process direction of the bread, wherein the temperature of the cold source device close to the baking equipment is higher than that of the cold source device far away from the baking equipment.

10. A method of operating a cooling system in a bread line as claimed in any one of claims 1 to 4 and 6 to 9, characterized in that the method comprises the steps of:

s 1: the height of the cover plate relative to the roller is set according to the height of the baked bread, namely the height is slightly higher than that of the bread;

s 2: controlling the cooling device to operate, after 20-30 min, controlling a baking device to bake the surface, and controlling the conveying chain to start to operate;

s 3: when the bread is conveyed to be close to the roller conveyor, the bread is pocketed by the pushing mechanism, the bread is pushed onto the roller conveyor by the pushing mechanism along with the operation of the conveying chain, the bread is enabled to move towards packaging equipment on a roller of the roller conveyor, the temperature of the surface of the roller is reduced by a cold water source circulating in the condensation pipe in the moving process, so that the temperature of the bread in contact with the roller is reduced, the bread is always positioned in a narrow cooling space formed by the two clapboards, the push plate and the cover plate in the conveying process of being in contact with the roller, and the cold air is sent by the fan to carry out independent cooling on the bread in the cooling space;

s 4: along with the operation of the conveying chain, the bread is pushed out to the packaging equipment from the roller conveyor by the pushing mechanism, and the cooling of the bread is completed.

Images