Raw material drying device for seasoning production

Abstract

The invention relates to the technical field of seasoning production equipment, and particularly discloses a seasoning production raw material drying device which comprises a rack, a dryer, a conveying mechanism and a cleaning mechanism, the conveying mechanism comprises a conveying belt, the dryer is located above the conveying belt, the cleaning mechanism is located below the conveying belt, and the cleaning mechanism comprises a lifting table and a cleaning roller. The cleaning roller is rotationally arranged on the lifting table, and the lifting table is slidably connected with the rack. The conveyor belt comprises an inner side and an outer side, the seasoning powder and the cleaning roller are both in contact with the outer side of the conveyor belt, a tensioning roller is rotationally arranged on the inner side of the conveyor belt on the rack, the cleaning roller is located on the outer side of the conveyor belt, and a propelling wheel is further arranged on the lifting table and is in contact with the outer side of the conveyor belt. When the conveyor belt is cleaned, the lifting table moves to enable the tensioning roller to abut against the conveyor belt, the outer side of the conveyor belt protrudes and deforms, the adhesion effect of the conveyor belt on seasoning powder is weakened, and the cleaning effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of condiment production equipment, and in particular to a raw material drying device for condiment production. Background Art

[0002] Condiments refer to supplementary foods that can enhance the color, aroma and taste of dishes, promote appetite and benefit human health. Their main function is to improve the quality of dishes, meet the sensory needs of consumers, stimulate appetite and improve human health. Condiments include salting agents, sour agents, sweeteners, umami agents and spicy agents.

[0003] Condiment drying is a process of dehydrating the raw materials and maintaining their original ingredients and characteristics. The Chinese patent document with the announcement number CN218455353U discloses a raw material drying device for solid condiment production, which includes a conveyor table, a conveyor belt is arranged inside the conveyor table, a drying box is arranged on the top of the conveyor table, and several electric lifting rods are arranged directly below the conveyor table. A support table is arranged on the top of the electric lifting rod, and cleaning structures such as wiping blocks, dust suction pipes, wiping shafts, and nozzles are arranged on the support table. When the device is in operation, the condiment raw materials pass through the drying box under the transportation of the conveyor belt for drying. After the drying is completed, the support table rises, and each cleaning structure contacts and cleans the surface of the conveyor belt.

[0004] The conveyor belt is arranged in a loop on the conveyor table. Since the material of the conveyor belt itself is elastic, during the drying process, the outer surface of the conveyor belt is in direct contact with the seasoning raw materials and is adhered with seasoning powder. When the outer surface of the conveyor belt is around the bottom of the conveyor table, it can be processed by various cleaning structures. During the processing, after the support table rises, components such as the wiping shaft and the wiping block abut against the outer surface of the conveyor belt, so the outer surface of the conveyor belt will be concave and deformed. At this time, the adhesion force of the conveyor belt surface on the seasoning powder is enhanced, making it difficult to clean. Summary of the invention

[0005] The invention provides a raw material drying device for seasoning production, aiming to solve the problem of difficulty in cleaning caused by depression of the outer side of a conveyor belt in the related art.

[0006] A raw material drying device for condiment production according to the present invention includes a frame, a dryer, a conveying mechanism, and a cleaning mechanism. The conveying mechanism includes a conveyor belt, a starting end reversing wheel, and a terminal end reversing wheel. The starting end reversing wheel and the terminal end reversing wheel are rotatably arranged on the frame. The conveyor belt circulates around the starting end reversing wheel and the terminal end reversing wheel. The cleaning mechanism includes a lifting platform and a cleaning roller. The cleaning roller is rotatably arranged on the lifting platform. The lifting platform is slidably connected to the frame. The conveyor belt includes an inner side and an outer side. The condiment powder and the cleaning roller are both in contact with the outer side of the conveyor belt. A tensioning roller is rotatably arranged on the frame and on the inner side of the conveyor belt. The cleaning roller is located on the outer side of the conveyor belt. A propulsion wheel is also rotatably arranged on the lifting platform. The propulsion wheel is in contact with the outer side of the conveyor belt. After the lifting platform moves closer to the conveyor belt, the tensioning roller and the cleaning roller respectively abut against opposite sides of the conveyor belt. A boosting member is arranged on the frame and on the inner side of the conveyor belt. The boosting member is movably connected to the frame. The boosting member generates an abutting force on the inner side of the conveyor belt. The position where the conveyor belt receives the abutting force of the boosting member is the part where the conveyor belt is wound around the terminal end reversing wheel.

[0007] The effect is as follows: During drying, the outer side of the conveyor belt is in direct contact with the condiment raw material during the running process. The lifting platform is at a position where the cleaning roller does not contact the conveyor belt, and at this time, the tensioning roller also does not contact the conveyor belt. After drying is completed, the lifting platform moves with the propulsion wheel and the cleaning roller. The propulsion wheel pushes the conveyor belt towards the tensioning roller, and the running trajectory of the conveyor belt at the cleaning mechanism changes. When the inner side of the conveyor belt abuts against the tensioning roller, the conveyor belt has a tendency to wrap around the tensioning roller, so the outer side of the conveyor belt expands and deforms. The adhesive force on the residual condiment powder on this surface weakens. Under the frictional contact of the cleaning roller, the powder is relatively easier to detach from the surface of the conveyor belt, that is, the cleaning effect on the outer side of the conveyor belt is better. At the terminal end reversing wheel, the condiment powder is about to fall off the conveyor belt. After the boosting member abuts against the inner side of the conveyor belt, the conveyor belt vibrates due to the force, and the condiment powder on its outer side is more likely to detach from the conveyor belt.

[0008] Preferably, the conveyor belt includes a transmission chain and a conveyor cloth body. The joint shafts of the transmission chain are fixedly connected to the side edges of the conveyor cloth body. The starting end reversing wheel, the terminal end reversing wheel, and the propulsion wheel are all sprockets and are all meshed with the transmission chain. The tensioning roller, the cleaning roller, and the boosting member are all in contact with the conveyor cloth body. A contact wheel is coaxially and fixedly connected to the end of the tensioning roller. When the conveyor cloth body abuts against the tensioning roller, the transmission chain abuts against the contact wheel.

[0009] The effect is as follows: The starting end reversing wheel, The end reversing wheel and the driving wheel mesh with the transmission chain to make the conveyor belt run. Each sprocket only plays a role in tensioning and guiding the conveyor sprocket of the conveyor belt, and does not exert a mechanical effect on the conveyor cloth body. The resulting deformation of the conveyor cloth body is small, and the adsorption effect on the condiment raw materials remains basically unchanged.

[0010] Preferably, there are two end reversing wheels that are coaxial with each other. A support shaft is fixedly connected coaxially between the two end reversing wheels. A connecting cylinder is coaxially sleeved on the support shaft. The assisting member is an assisting roller. The roller wall of the assisting roller contacts the inner side of the conveyor cloth body. There are multiple assisting rollers and they are arranged in a circumferential array around the connecting cylinder. The assisting rollers are rotatably connected to the side wall of the connecting cylinder, and the rotation axis is parallel to the axis of the connecting cylinder.

[0011] Preferably, a connecting gear is fixedly connected coaxially on the connecting cylinder. A driving gear that meshes with the connecting gear is rotatably arranged on the frame. The rotation speed of the connecting cylinder is greater than the rotation speed of the end reversing wheel.

[0012] The effect is that during the rotation of the connecting cylinder, each assisting roller alternately abuts against the inner side of the conveyor cloth body, so that the conveyor cloth body undergoes continuous vibration, improving the success rate of the separation of the condiment raw materials thereon.

[0013] Preferably, the conveying mechanism further includes a guiding sprocket group. After the conveyor belt leaves the starting reversing wheel, it passes through the guiding sprocket group and then bypasses the end reversing wheel. The guiding sprocket group includes a supporting sprocket and a concave sprocket. There are two supporting sprockets and they are respectively located on opposite sides of the concave sprocket. The concave sprocket is located above the conveyor belt. The supporting sprocket is located inside the conveyor belt. When the conveyor belt bypasses the concave sprocket, a concave is formed on the outer side of the conveyor cloth body.

[0014] The effect is that the condiment raw materials on the conveyor cloth body form a certain accumulation in this concave space. When the conveyor cloth body leaves the concave space, the thickness of the condiment raw materials thereon decreases, that is, the spreading degree of the condiment raw materials increases, thereby increasing the specific surface area of the condiment raw materials and improving the overall drying effect.

[0015] Preferably, a material leveling plate is slidably arranged on the frame. The material leveling plate is located above the conveyor belt. The plate surface of the material leveling plate is a vertical plane. A wave structure is formed on the lower side edge of the material leveling plate. The sliding direction of the material leveling plate is horizontal and perpendicular to the moving direction of the conveyor belt.

[0016] Preferably, an installation rod is connected to the material leveling plate. A central shaft hole for the coaxial passing of the installation rod is provided on the sunken sprocket. The installation rod is slidably connected to the frame, and the sliding direction is parallel to the axis of the sunken sprocket. An adjustment groove is provided on the rod wall of the installation rod. The adjustment groove is a closed-loop groove surrounding the installation rod for one week, and the trajectory of the adjustment groove is a sine curve. An adjustment convex block is fixedly connected to the hole wall of the central shaft hole, and the adjustment convex block is located in the adjustment groove. A reciprocating spring is connected between the installation rod and the frame.

[0017] The effect is that when the sunken sprocket rotates, the material leveling plate moves horizontally back and forth, and the condiment raw materials passing through the material leveling plate are also horizontally stirred, improving the uniformity of their spatial distribution in the horizontal direction.

[0018] Preferably, the guiding sprocket group further includes a first drop sprocket and a second drop sprocket rotatably connected to the frame. The conveyor belt sequentially bypasses the starting end reversing wheel, the first drop sprocket, the second drop sprocket, and the ending end reversing wheel. The first drop sprocket is higher than the second drop sprocket. A drop portion is formed between the first drop sprocket and the second drop sprocket on the conveyor belt, and the horizontal component of the moving direction of the drop portion is towards the starting end reversing wheel.

[0019] The effect is that when the conveyor belt moves to the drop portion, the condiment raw materials on the conveyor cloth body will perform free-fall motion, improving the contact rate between the condiment raw materials and the high-temperature gas below the dryer, thereby improving the drying effect.

[0020] Preferably, a tensioning block is slidably arranged on the frame. The starting end reversing wheel is rotatably connected to the tensioning block. The sliding direction of the tensioning block is the horizontal direction and perpendicular to the axis of the starting end reversing wheel. A tensioning spring is connected between the tensioning block and the frame. In the natural state, the direction of the abutting force exerted by the tensioning spring on the tensioning block is away from the ending end reversing wheel.

[0021] Preferably, the cleaning mechanism further includes a dust suction box. The dust suction box is fixedly connected to the lifting platform. The box opening of the dust suction box faces the conveyor belt. The cleaning roller is located at the box opening of the dust suction box. The inner cavity of the dust suction box is communicated with a negative pressure air source.

[0022] The effect is that a negative pressure air flow is generated at the box opening of the dust suction box. After the cleaning roller frictions the surface of the conveyor cloth body, the powder materials falling off from the conveyor cloth body under the friction action are sucked into the dust suction box for collection under the action of the negative pressure air flow.

[0023] By adopting the above technical solutions, the beneficial effects of the present invention are: During the drying process, each sprocket of the conveyor mechanism drives and guides the transmission chain of the conveyor belt without contacting the conveyor cloth body. Since the relative distances of the joints of the transmission chain are relatively stable, the deformation degree of the conveyor cloth body is small, and the change in the adhesion force to the condiment material caused by the change in its own shape is also small; when cleaning the conveyor cloth body, the tensioning roller abuts against the inner side of the conveyor cloth body, and the outer side of the conveyor cloth body expands and deforms, and its adhesion force to the residual condiment powder decreases, which is beneficial to improving the cleaning effect. Brief Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of the raw material drying device for condiment production in the embodiment of the present invention.

[0025] Figure 2 It is a schematic diagram of the cooperation structure of the conveyor belt and the end reversing wheel in the embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the cooperation structure of the concave sprocket and the material leveling plate in the embodiment of the present invention.

[0027] Figure 4 is Figure 3 The partial enlarged view of part A in

[0028] Figure 5 It is a schematic diagram of the installation structure of the mounting rod and the mounting sleeve in the embodiment of the present invention.

[0029] Figure 6 It is a schematic diagram of the cooperation structure of the end reversing wheel and the assisting member in the embodiment of the present invention.

[0030] Figure 7 It is a schematic diagram of the structural principle of the cleaning mechanism after the lifting table moves in the embodiment of the present invention.

[0031] Reference Signs: 1. Frame; 11. Dryer; 12. Tensioning block; 121. Tensioning spring; 2. Conveying mechanism; 21. Conveyor belt; 211. Transmission chain; 212. Conveying cloth body; 213. Drop part; 22. Starting end reversing wheel; 23. End reversing wheel; 231. Support shaft; 24. Guide sprocket group; 241. Concave sprocket; 2411. Central shaft hole; 2412. Adjusting convex block; 242. Support sprocket; 25. Material leveling plate; 251. Mounting rod; 2511. Adjusting groove; 252. Reciprocating spring; 253. Mounting bolt; 254. Mounting sleeve; 26. First drop sprocket; 27. Second drop sprocket; 3. Connecting cylinder; 31. Boosting part; 32. Connecting gear; 33. Driving gear; 4. Cleaning mechanism; 41. Lifting platform; 42. Dust suction box; 43. Cleaning roller; 44. Propelling wheel; 45. Auxiliary wheel; 46. Tensioning roller; 461. Contact wheel. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0033] The following will be combined with Figures 1 to 7 to describe a raw material drying device for condiment production of the present invention.

[0034] This embodiment discloses a raw material drying device for condiment production. As Figure 1 shown, it includes a frame 1, a dryer 11, a conveying mechanism 2 and a cleaning mechanism 4. The conveying mechanism 2 includes a conveyor belt 21, a starting end reversing wheel 22, an end reversing wheel 23 and a guide sprocket group 24. The starting end reversing wheel 22 and the end reversing wheel 23 are rotatably arranged on the frame 1, and the rotation axis is in the horizontal direction. The conveyor belt 21 circulates around the starting end reversing wheel 22 and the end reversing wheel 23. A hot drying chamber is arranged on the frame 1 and above the conveyor belt 21. The dryer 11 is connected in the hot drying chamber. The cleaning mechanism 4 is located on the frame 1 and below the conveyor belt 21. The upper half of the conveyor belt 21 is used to carry condiment raw materials and move through the hot drying chamber for drying treatment. The moving direction of this part of the conveyor belt 21 is from the starting end reversing wheel 22 towards the end reversing wheel 23. The drying mechanism of the dryer 11 is electric heating drying. The cleaning mechanism 4 is located on the frame 1 and below the conveyor belt 21. After the drying treatment, the cleaning mechanism 4 is used to clean the conveyor belt 21.

[0035] As Figure 1 and Figure 2As shown in the figure, the conveyor belt 21 includes a driving chain 211 and a conveyor cloth body 212. The driving chain 211 is of the roller type, and the conveyor cloth body 212 is made of leather. There are two driving chains 211, which are respectively located on both side edges of the conveyor cloth body 212. The joint shafts of the driving chains 211 are fixedly connected to the side edges of the conveyor cloth body 212. The starting end reversing wheel 22 and the ending end reversing wheel 23 are both sprockets and are both engaged with the driving chain 211. There are also two starting end reversing wheels 22 and ending end reversing wheels 23 that are coaxial with each other. A motor (not shown in the figure) for driving the ending end reversing wheel 23 to rotate is provided on the frame 1. A tensioning block 12 is slidably arranged on the frame 1. The starting end reversing wheel 22 is rotatably connected to the tensioning block 12. The sliding direction of the tensioning block 12 is horizontal and perpendicular to the axis of the starting end reversing wheel 22. A tensioning spring 121 is connected between the tensioning block 12 and the frame 1. In the natural state, the direction of the abutting force exerted by the tensioning spring 121 on the tensioning block 12 is away from the ending end reversing wheel 23, that is, the driving chain 211 is always in a tensioned state. The conveyor cloth body 212 moves synchronously along the running track of the driving chain 211. Since the conveyor belt 21 runs in a circulating loop, it includes an inner side and an outer side. The starting end reversing wheel 22 and the ending end reversing wheel 23 are both located on the inner side of the conveyor belt 21. The condiment raw materials are in direct contact with the outer side of the conveyor cloth body 212.

[0036] As Figure 1 shown, the lower ends of the starting end reversing wheel 22 and the ending end reversing wheel 23 are at the same height, while the upper end of the starting end reversing wheel 22 is higher than the upper end of the ending end reversing wheel 23. After the conveyor belt 21 leaves the starting end reversing wheel 22, it passes through the guiding sprocket group 24 and then bypasses the ending end reversing wheel 23. The guiding sprocket group 24 includes a first drop sprocket 26 and a second drop sprocket 27 that are rotatably connected to the frame 1. The conveyor belt 21 bypasses the starting end reversing wheel 22, the first drop sprocket 26, the second drop sprocket 27, and the ending end reversing wheel 23 in sequence. The first drop sprocket 26 is higher than the second drop sprocket 27. The upper end of the first drop sprocket 26 is at the same height as the upper end of the starting end reversing wheel 22. The lower end of the second drop sprocket 27 is at the same height as the upper end of the ending end reversing wheel 23. The first drop sprocket 26 is located on the inner side of the driving chain 211, and the second drop sprocket 27 is located on the outer side of the driving chain 211. A drop portion 213 is formed between the first drop sprocket 26 and the second drop sprocket 27 of the conveyor belt 21. The horizontal component of the moving direction of the drop portion 213 is towards the starting end reversing wheel 22. When the conveyor belt 21 moves to the drop portion 213, the condiment raw materials on the conveyor cloth body 212 will perform a free fall motion, which improves the contact rate between the condiment raw materials and the high-temperature gas in the hot drying chamber, thereby improving the drying effect.

[0037] As Figure 1As shown, the overall running direction of the conveyor belt 21 between the starting end reversing wheel 22 and the first drop sprocket 26, and between the second drop sprocket 27 and the ending end reversing wheel 23 is horizontal; the guiding sprocket group 24 further includes a supporting sprocket 242 and a recessed sprocket 241, and the supporting sprocket 242 and the recessed sprocket 241 are used to form recesses in two horizontal running parts of the conveyor belt 21 respectively. Taking the section between the starting end reversing wheel 22 and the first drop sprocket 26 as an example, a single transmission chain 211 is correspondingly engaged with two supporting sprockets 242 and one recessed sprocket 241. The two supporting sprockets 242 are respectively located on the front and rear sides of the recessed sprocket 241. The recessed sprocket 241 is located on the outer side of the transmission chain 211, and the supporting sprocket 242 is located on the inner side of the transmission chain 211. When the conveyor cloth body 212 bypasses the recessed sprocket 241, it first descends and then ascends, thus forming a recessed structure. The condiment raw materials on the conveyor cloth body 212 form a certain accumulation in this recessed space. When the conveyor cloth body 212 leaves the recessed space, the thickness of the condiment raw materials on it decreases, that is, the spreading degree of the condiment raw materials increases, thereby increasing the specific surface area of the condiment raw materials and improving the overall drying effect.

[0038] As Figure 3 and Figure 4 shown, a material leveling plate 25 is slidably arranged on the frame 1. The material leveling plate 25 is located above the conveyor belt 21 and within the recessed space formed by the recessed sprocket 241. The plate surface of the material leveling plate 25 is a vertical plane. The lower side edge of the material leveling plate 25 is formed with a wave structure, and there is a gap between the lower side edge of the material leveling plate 25 and the surface of the conveyor cloth body 212. A mounting rod 251 is detachably connected to the material leveling plate 25. A central shaft hole 2411 for the mounting rod 251 to pass through coaxially is opened on the recessed sprocket 241. The mounting rod 251 is slidably connected to the frame 1, and the sliding direction is parallel to the axis of the recessed sprocket 241. An adjusting groove 2511 is opened on the rod wall of the mounting rod 251. The adjusting groove 2511 is a closed-loop groove surrounding the mounting rod 251 and its trajectory is a sine curve. An adjusting convex block 2412 is fixedly connected to the hole wall of the central shaft hole 2411. The adjusting convex block 2412 is located within the adjusting groove 2511. A reciprocating spring 252 is connected between the mounting rod 251 and the frame 1. That is, when the recessed sprocket 241 rotates, the adjusting convex block 2412 exerts a pressing force on the groove wall of the adjusting groove 2511. Under the action of the horizontal component force, the mounting rod 251 reciprocates along its own length direction. During the reciprocating movement of the mounting rod 251 and the material conveying plate, the lateral distribution of the condiment raw materials passing through the material leveling plate 25 is more uniform.

[0039] As Figure 3 , Figure 4 and Figure 5As shown, there are two mounting rods 251, which are respectively located on opposite sides of the material leveling plate 25. The cross-section of the part where the mounting rod 251 and the frame 1 cooperate for sliding is rectangular. A mounting sleeve 254 is fixedly connected to the material leveling plate 25. The mounting rod 251 is inserted into the mounting sleeve 254. A mounting bolt 253 is passed through the mounting sleeve 254, and the axis of the mounting bolt 253 is perpendicular to the axis of the mounting sleeve 254. The mounting bolt 253 passes through the mounting sleeve 254 and is threadedly connected to the mounting rod 251, thereby realizing the connection and fixation of the two, and at the same time facilitating the removal of the material leveling plate 25 for cleaning.

[0040] As Figure 2 and Figure 6 As shown, when the condiment raw materials on the conveyor belt 21 reach the end reversing wheel 23, they are sent away from the frame 1. In order to improve the detachment rate of the condiment raw materials from the conveyor belt 21, a boosting member 31 is movably arranged on the frame 1 and inside the conveyor belt 21. The boosting member 31 generates a pressing force on the inner side of the conveyor cloth body 212 to cause the conveyor cloth body 212 to vibrate. The position where the conveyor cloth body 212 receives the pressing force of the boosting member 31 is located at the part where the conveyor belt 21 is wound around the end reversing wheel 23. The boosting member 31 is a boosting roller. There are multiple boosting rollers. A support shaft 231 is coaxially fixedly connected between the two end reversing wheels 23. A connecting cylinder 3 is coaxially sleeved on the support shaft 231, that is, the connecting cylinder 3 can rotate coaxially relative to the support shaft 231. Multiple boosting rollers are arranged in a circumferential array around the connecting cylinder 3. The boosting rollers are rotatably connected to the side wall of the connecting cylinder 3, and the rotation axis is parallel to the axis of the connecting cylinder 3. The diameter of the connecting cylinder 3 is relatively small, so its side wall does not contact the conveyor cloth body 212. A connecting gear 32 is coaxially fixedly connected to the connecting cylinder 3. A driving gear 33 meshing with the connecting gear 32 is rotatably arranged on the frame 1. A motor (not shown in the figure) for driving the driving gear 33 to rotate is also arranged on the frame 1. Driven by the driving gear 33, the connecting cylinder 3 rotates, and the rotation speed is higher than that of the end reversing wheel 23. Each boosting roller alternately abuts against the inner side of the conveyor cloth body 212, so that the conveyor cloth body 212 continuously vibrates, improving the detachment success rate of the condiment raw materials thereon. The abutting degree between the boosting roller and the conveyor cloth body 212 is relatively low, and the deformation degree of the conveyor cloth body 212 is also relatively small, and it hardly has a negative impact on the meshing stability of the transmission chain 211 and the end reversing wheel 23.

[0041] As Figure 1 and Figure 7As shown in the figure, the cleaning mechanism 4 includes a lifting platform 41, a dust suction box 42 and a cleaning roller 43. The lifting platform 41 is slidably connected to the frame 1, and the sliding direction is the vertical direction. A cylinder for driving the sliding of the lifting platform 41 is provided on the frame 1. The mouth of the dust suction box 42 faces the conveyor belt 21 from bottom to top, and the cleaning roller 43 is located at the mouth of the dust suction box 42; a tensioning roller 46 is rotatably provided on the frame 1, and the tensioning roller 46 is located inside the conveyor belt 21. A driving wheel 44 and an auxiliary wheel 45 are also rotatably provided on the lifting platform 41. The driving wheel 44 is a sprocket, and the driving wheel 44 meshes with the outer side of the transmission chain 211. The auxiliary wheel 45 rolls against the inner side of the transmission chain 211, and the two form a clamping posture for the transmission chain 211, so that the transmission chain 211 will not disengage from the driving wheel 44. The rotation axes of the tensioning roller 46 and the cleaning roller 43 are both parallel to the rotation axis of the end reversing wheel 23. There are two groups of driving wheels 44 and they are respectively located on the opposite sides of the tensioning roller 46. When the lifting platform 41 moves closer to the tensioning roller 46, the two driving wheels 44 push the conveyor belt 21 to move until the conveying cloth body 212 of the conveyor belt 21 abuts against the tensioning roller 46, so that the conveying cloth body 212 is deformed by force. The deformation form is that the inner side is sunken and the outer side is tensioned and raised. At the same time, the cleaning roller 43 contacts the outer surface of the conveying cloth body 212. In order to reduce the tensile stress at the connection between the transmission chain 211 and the conveying cloth body 212 when the tensioning roller 46 abuts against the conveyor belt 21 during the cleaning process, a contact wheel 461 is coaxially and fixedly connected to the end of the tensioning roller 46. The diameter of the contact wheel 461 is smaller than that of the tensioning roller 46. When the conveying cloth body 212 abuts against the tensioning roller 46, the transmission chain 211 abuts against the contact wheel 461.

[0042] As Figure 1 and Figure 7 shown in the figure, a motor (not shown in the figure) for driving the cleaning roller 43 to rotate is provided on the lifting platform 41. When the cleaning roller 43 rotates, its surface rubs against the conveying cloth body 212, and the direction of the frictional force received by the conveying cloth body 212 is opposite to its own moving direction. The inner cavity of the dust suction box 42 is externally connected to a negative pressure air source. During the cleaning process, a negative pressure air flow is generated at the mouth of the dust suction box 42 to absorb the powder under the friction of the cleaning roller 43.

[0043] The working process of this embodiment: During the drying process of the condiment raw materials and the cleaning process of the conveying cloth body 212, the running direction of the transmission chain 211 is the same as that of the conveying cloth body 212. Each sprocket of the conveying mechanism 2 only plays a role in tensioning and guiding the conveying sprockets of the conveyor belt 21, and does not exert a mechanical force on the conveying cloth body 212, resulting in a small deformation amount of the conveying cloth body 212. After the tensioning roller 46 abuts against the conveying cloth body 212 during cleaning, the conveying cloth body 212 is deformed. Since its outer side is tensioned and raised, the adhesion effect on the condiment powder is reduced, and the powder is more likely to detach from the conveying cloth body 212.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A raw material drying device for seasoning production, comprising a frame (1), a dryer (11), a conveying mechanism (2) and a cleaning mechanism (4), wherein the conveying mechanism (2) comprises a conveyor belt (21), a starting reversing wheel (22) and a terminal reversing wheel (23), wherein the starting reversing wheel (22) and the terminal reversing wheel (23) are rotatably arranged on the frame (1), and the conveyor belt (21) circulates around the starting reversing wheel (22) and the terminal reversing wheel (23), wherein the cleaning mechanism (4) comprises a lifting platform (41) and a cleaning roller (43), wherein the cleaning roller (43) is rotatably arranged on the lifting platform (41), and the lifting platform (41) and the frame (1) are slidably connected; It is characterized in that The conveyor belt (21) comprises an inner side and an outer side, the seasoning powder and the cleaning roller (43) are both in contact with the outer side of the conveyor belt (21), a tensioning roller (46) is rotatably provided on the frame (1) and on the inner side of the conveyor belt (21), the cleaning roller (43) is located on the outer side of the conveyor belt (21), and a propulsion wheel (44) is rotatably provided on the lifting platform (41), the propulsion wheel (44) is in contact with the outer side of the conveyor belt (21), and after the lifting platform (41) moves close to the conveyor belt (21), the tensioning roller (46) and the cleaning roller (43) respectively abut against opposite sides of the conveyor belt (21); An assisting member (31) is provided on the frame (1) and on the inner side of the conveyor belt (21); the assisting member (31) is movably connected to the frame (1); the assisting member (31) generates a contact force on the inner side of the conveyor belt (21); and the position where the conveyor belt (21) is subjected to the contact force of the assisting member (31) is located at a portion where the conveyor belt (21) is wound around the terminal reversing wheel (23).

2. A raw material drying device for seasoning production according to claim 1, characterized in that: The conveyor belt (21) comprises a transmission chain (211) and a transmission cloth body (212); the joint shaft of the transmission chain (211) is fixedly connected to the side edge of the transmission cloth body (212); the starting reversing wheel (22), the terminal reversing wheel (23) and the propulsion wheel (44) are all sprockets and are all meshed with the transmission chain (211); the tensioning roller (46), the cleaning roller (43) and the assisting member (31) are all in contact with the transmission cloth body (212); the end of the tensioning roller (46) is coaxially fixedly connected with a contact wheel (461); when the transmission cloth body (212) and the tensioning roller (46) are in contact, the transmission chain (211) and the contact wheel (461) are in contact.

3. A raw material drying device for seasoning production according to claim 2, characterized in that: The terminal reversing wheels (23) are provided with two coaxial wheels, a support shaft (231) is coaxially fixedly connected between the two terminal reversing wheels (23), a connecting tube (3) is coaxially sleeved on the support shaft (231), the assisting member (31) is an assisting roller, a roller wall of the assisting roller contacts the inner side of the conveying cloth body (212), a plurality of the assisting rollers are provided and arranged in a circumferential array around the connecting tube (3), the assisting rollers are rotatably connected to the side wall of the connecting tube (3), and the rotation axis is parallel to the axis of the connecting tube (3).

4. A raw material drying device for seasoning production according to claim 3, characterized in that: A connecting gear (32) is coaxially fixedly connected to the connecting cylinder (3), and a driving gear (33) is rotatably provided on the frame (1) and meshes with the connecting gear (32). The rotation speed of the connecting cylinder (3) is greater than the rotation speed of the terminal reversing wheel (23).

5. The raw material drying device for seasoning production according to claim 2, characterized in that: The conveying mechanism (2) further comprises a guide sprocket set (24); the conveyor belt (21) passes through the guide sprocket set (24) after leaving the starting end reversing wheel (22) and then bypasses the terminal reversing wheel (23); the guide sprocket set (24) comprises a support sprocket (242) and a recessed sprocket (241); there are two support sprockets (242) and the recessed sprockets (241) are respectively located on opposite sides of the recessed sprocket (241); the recessed sprocket (241) is located on the upper side of the conveyor belt (21); the support sprocket (242) is located on the inner side of the conveyor belt (21); when the conveyor belt (21) bypasses the recessed sprocket (241), a recess is formed on the outer side of the conveying cloth body (212).

6. A raw material drying device for seasoning production according to claim 5, characterized in that: A material leveling plate (25) is slidably provided on the frame (1), the material leveling plate (25) is located above the conveyor belt (21), the plate surface of the material leveling plate (25) is a vertical plane, the lower edge of the material leveling plate (25) is formed with a wave structure, and the sliding direction of the material leveling plate (25) is a horizontal direction and is perpendicular to the moving direction of the conveyor belt (21).

7. A raw material drying device for seasoning production according to claim 6, characterized in that: The material leveling plate (25) is connected to a mounting rod (251); the recessed sprocket (241) is provided with a central axis hole (2411) for the mounting rod (251) to coaxially pass through; the mounting rod (251) is slidably connected to the frame (1); the sliding direction is parallel to the axis of the recessed sprocket (241); an adjustment groove (2511) is provided on the rod wall of the mounting rod (251); the adjustment groove (2511) is a closed-loop groove surrounding the mounting rod (251); the trajectory of the adjustment groove (2511) is a sine curve; an adjustment protrusion (2412) is fixedly connected to the hole wall of the central axis hole (2411); the adjustment protrusion (2412) is located in the adjustment groove (2511); and a reciprocating spring (252) is connected between the mounting rod (251) and the frame (1).

8. The raw material drying device for seasoning production according to claim 5, characterized in that: The guide sprocket assembly (24) further comprises a first drop sprocket (26) and a second drop sprocket (27) rotatably connected to the frame (1); the conveyor belt (21) sequentially passes over the starting reversing wheel (22), the first drop sprocket (26), the second drop sprocket (27) and the ending reversing wheel (23); the first drop sprocket (26) is higher than the second drop sprocket (27); the conveyor belt (21) forms a drop portion (213) between the first drop sprocket (26) and the second drop sprocket (27); the component of the moving direction of the drop portion (213) in the horizontal direction is toward the starting reversing wheel (22).

9. The raw material drying device for seasoning production according to claim 2, characterized in that: A tension block (12) is slidably arranged on the frame (1), the starting reversing wheel (22) is rotatably connected to the tension block (12), the sliding direction of the tension block (12) is horizontal and the axis of the starting reversing wheel (22) is vertical, a tension spring (121) is connected between the tension block (12) and the frame (1), and in a natural state, the direction of the abutting force applied by the tension spring (121) to the tension block (12) is away from the end reversing wheel (23).

10. A raw material drying device for seasoning production according to any one of claims 1 to 9, characterized in that: The cleaning mechanism (4) further comprises a dust box (42), wherein the dust box (42) is fixedly connected to the lifting platform (41), the box opening of the dust box (42) faces the conveyor belt (21), the cleaning roller (43) is located at the box opening of the dust box (42), and the inner cavity of the dust box (42) is connected to a negative pressure air source.

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