A raw material drying device for seasoning production

Abstract

The present invention relates to the technical field of seasoning production equipment, and specifically discloses a raw material drying device for seasoning production, comprising a frame, a dryer, a conveying mechanism, and a cleaning mechanism. The conveying mechanism comprises a conveyor belt, the dryer is located above the conveyor belt, and the cleaning mechanism is located below the conveyor belt. The cleaning mechanism comprises a lifting platform and a cleaning roller, the cleaning roller is rotatably arranged on the lifting platform, and the lifting platform is slidably connected to the frame. The conveyor belt comprises an inner side and an outer side, and the seasoning 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 inner side of the conveyor belt on the frame, and the cleaning roller is located on the outer side of the conveyor belt. A propulsion wheel is also provided on the lifting platform, and the propulsion wheel is in contact with the outer side of the conveyor belt. When cleaning the conveyor belt, the lifting platform moves to make the tensioning roller abut against the conveyor belt, and the outer side of the conveyor belt is deformed and convex, which reduces its adhesion to the seasoning powder and improves the cleaning effect.

Description

Technical Field

[0001] The present 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 are supplementary foods that enhance the color, aroma, and flavor of dishes, stimulate appetite, and benefit human health. Their primary function is to improve the quality of dishes, satisfy consumers' sensory needs, stimulate appetite, and enhance human health. Condiments include salting agents, souring agents, sweetening agents, flavor enhancers, and spicy flavoring agents.

[0003] Condiment drying is a process that dehydrates the raw materials while preserving their original composition and properties. A Chinese patent document with the publication number CN218455353U discloses a raw material drying device for solid condiment production. The device includes a conveyor platform with a conveyor belt installed inside. A drying box is installed on top of the conveyor platform. Several electric lifts are installed directly below the conveyor platform. A support platform is installed on the top of the electric lifts. The support platform is equipped with cleaning structures such as wiping blocks, vacuum tubes, wiping shafts, and nozzles. When the device is in operation, the condiment raw materials are transported by the conveyor belt through the drying box for drying. After drying, the support platform rises, and the various cleaning structures contact and clean the surface of the conveyor belt.

[0004] The conveyor belt loops around the conveyor table. Due to the inherent elasticity of the belt material, during the drying process, the outer surface of the belt comes into direct contact with the seasoning ingredients, causing seasoning powder to adhere. As the outer surface of the belt passes beneath the conveyor table, it is cleaned by the various cleaning mechanisms. During this cleaning process, when the support table rises, components such as the wiping shaft and wiping block come into contact with the outer surface of the belt, causing it to dent and deform. This increases the adhesion of the seasoning powder to the belt surface, making cleaning difficult. Summary of the Invention

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

[0006] The present invention relates to a raw material drying device for seasoning production, comprising a frame, a dryer, a conveying mechanism and a cleaning mechanism, wherein the conveying mechanism comprises a conveyor belt, a starting reversing wheel and an ending reversing wheel, wherein the starting reversing wheel and the ending reversing wheel are rotatably arranged on the frame, and the conveyor belt circulates around the starting reversing wheel and the ending reversing wheel, and the cleaning mechanism comprises a lifting platform and a cleaning roller, wherein the cleaning roller is rotatably arranged on the lifting platform, and the lifting platform is slidably connected to the frame; the conveyor belt comprises an inner side and an outer side, and the seasoning powder and the cleaning roller are both in contact with the outer side of the conveyor belt, and the conveyor belt is provided with a plurality of cleaning rollers, wherein the cleaning rollers are provided with a plurality of cleaning rollers, wherein the cleaning rollers are provided with a plurality of cleaning rollers, and the plurality of cleaning rollers are provided with a plurality of cleaning rollers, wherein ... A tensioning roller is rotatably provided 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 provided on the lifting platform. The propulsion wheel is in contact with the outer side of the conveyor belt. After the lifting platform moves close to the conveyor belt, the tensioning roller and the cleaning roller respectively abut against the opposite sides of the conveyor belt; an assisting member is provided on the frame and on the inner side of the conveyor belt. The assisting member is movably connected to the frame. The assisting member generates an abutting force on the inner side of the conveyor belt. The position where the conveyor belt is subjected to the abutting force of the assisting member is located at the part where the conveyor belt is wound around the end reversing wheel.

[0007] The effect is that during drying, the outer side of the conveyor belt is in direct contact with the seasoning raw materials during the winding process, and the lifting platform is located in a position so that the cleaning roller does not contact the conveyor belt, and the tensioning roller does not contact the conveyor belt at this time. After the drying is completed, the lifting platform carries the propulsion wheel and the cleaning roller to move, and the propulsion wheel pushes the conveyor belt toward the tensioning roller. The running trajectory of the conveyor belt at the cleaning mechanism changes. When the inner side of the conveyor belt abuts the tensioning roller, the conveyor belt has a tendency to wrap around the tensioning roller, so that the outer side of the conveyor belt expands and deforms, and the adhesion force of this surface on the residual seasoning powder is weakened. Under the friction contact of the cleaning roller, the powder is relatively easier to detach from the conveyor belt surface, that is, the cleaning effect of the outer side of the conveyor belt is better; at the end reversing wheel, the seasoning powder is about to fall from the conveyor belt, and after the power assisting member abuts the inner side of the conveyor belt, the conveyor belt vibrates due to the force, and the seasoning powder on its outer side is easier to detach from the conveyor belt.

[0008] Preferably, the conveyor belt includes a transmission chain and a transmission cloth body, the joint shaft of the transmission chain is fixedly connected to the side edge of the transmission cloth body, the starting reversing wheel, the terminal reversing wheel and the propulsion wheel are all sprockets and are engaged with the transmission chain, the tensioning roller, the cleaning roller and the assisting member are all in contact with the transmission cloth body, the end of the tensioning roller is coaxially fixedly connected with a contact wheel, and when the transmission cloth body and the tensioning roller are in contact, the transmission chain and the contact wheel are in contact.

[0009] Its effect is: the starting reversing wheel,

[0010] The end reversing wheel and the propulsion wheel engage with the transmission chain to make the conveyor belt run. Each sprocket only plays a role in tensioning and guiding the transmission sprocket of the conveyor belt, and does not produce mechanical effects on the transmission cloth. The resulting deformation of the transmission cloth is small, and the adsorption effect on the seasoning raw materials remains basically unchanged.

[0011] Preferably, there are two end reversing wheels that are coaxial with each other, and a support shaft is coaxially fixedly connected between the two end reversing wheels. A connecting tube is coaxially sleeved on the support shaft, and the assisting member is an assisting roller. The roller wall of the assisting roller is in contact with the inner side of the conveying cloth body. There are multiple assisting rollers and they are arranged in a circumferential array around the connecting tube. The assisting roller is rotatably connected to the side wall of the connecting tube, and the rotation axis is parallel to the axis of the connecting tube.

[0012] Preferably, a connecting gear is coaxially fixedly connected to the connecting cylinder, a driving gear meshing with the connecting gear is rotatably provided on the frame, and the rotation speed of the connecting cylinder is greater than the rotation speed of the terminal reversing wheel.

[0013] The effect is that during the rotation of the connecting cylinder, each assisting roller abuts against the inner side of the conveying cloth body in turn, thereby causing the conveying cloth body to vibrate continuously, thereby improving the success rate of separating the seasoning raw materials thereon.

[0014] Preferably, the conveying mechanism also includes a guide sprocket group. After the conveyor belt leaves the starting end reversing wheel, it passes through the guide sprocket group and then bypasses the terminal reversing wheel. The guide sprocket group includes a support sprocket and a recessed sprocket. There are two support sprockets and they are respectively located on opposite sides of the recessed sprocket. The recessed sprocket is located on the upper side of the conveyor belt, and the support sprocket is located on the inner side of the conveyor belt. When the conveyor belt bypasses the recessed sprocket, a recess is formed on the outer side of the conveying cloth body.

[0015] The effect is that the seasoning raw materials on the conveyor cloth form a certain accumulation in this concave space. When the conveyor cloth leaves the concave space, the thickness of the seasoning raw materials on it decreases, that is, the spreading degree of the seasoning raw materials is improved, thereby increasing the specific surface area of the seasoning raw materials and improving the overall drying effect.

[0016] Preferably, a material leveling plate is slidably provided 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, the lower edge of the material leveling plate is formed with a wave structure, and the sliding direction of the material leveling plate is horizontal and perpendicular to the moving direction of the conveyor belt.

[0017] Preferably, a mounting rod is connected to the material leveling plate, a central axis hole is provided on the recessed sprocket for the mounting rod to pass through coaxially, the mounting rod and the frame are slidably connected, and the sliding direction is parallel to the axis of the recessed sprocket, an adjustment groove is provided on the rod wall of the mounting rod, the adjustment groove is a closed-loop groove surrounding the mounting rod, the trajectory of the adjustment groove is a sine curve, an adjustment protrusion is fixedly connected to the hole wall of the central axis hole, the adjustment protrusion is located in the adjustment groove, and a reciprocating spring is connected between the mounting rod and the frame.

[0018] The effect is that when the concave sprocket rotates, the material leveling plate moves back and forth laterally, and the seasoning raw materials passing through the material leveling plate are also moved laterally, thereby improving the spatial distribution uniformity in the lateral direction.

[0019] Preferably, the guide sprocket group also includes a first drop sprocket and a second drop sprocket rotatably connected to the frame, and the conveyor belt passes around the starting reversing wheel, the first drop sprocket, the second drop sprocket and the end reversing wheel in sequence, the first drop sprocket is higher than the second drop sprocket, and the conveyor belt forms a drop portion between the first drop sprocket and the second drop sprocket, and the horizontal component of the moving direction of the drop portion is toward the starting reversing wheel.

[0020] The effect is that when the conveyor belt moves to the drop portion, the seasoning raw materials on the conveyor cloth will perform free fall motion, which increases the contact rate between the seasoning raw materials and the high-temperature gas below the dryer, thereby improving the drying effect.

[0021] Preferably, a tensioning block is slidingly provided on the frame, the starting reversing wheel is rotatably connected to the tensioning block, the sliding direction of the tensioning block is horizontal and the axis of the starting reversing wheel is vertical, and a tensioning spring is connected between the tensioning block and the frame. In a natural state, the direction of the abutting force applied by the tensioning spring to the tensioning block is away from the end reversing wheel.

[0022] Preferably, the cleaning mechanism further includes a dust box, which is fixedly connected to the lifting platform, with the box opening of the dust box facing the conveyor belt, the cleaning roller is located at the box opening of the dust box, and the inner cavity of the dust box is connected to a negative pressure air source.

[0023] The effect is that a negative pressure airflow is generated at the opening of the dust box, and after the cleaning roller rubs the surface of the conveying cloth, the powder falling off the conveying cloth due to the friction is sucked into the dust box for collection under the action of the negative pressure airflow.

[0024] By adopting the above technical solution, the beneficial effects of the present invention are:

[0025] During the drying process, the sprockets of the transmission mechanism guide the transmission chain of the conveyor belt without contacting the transmission cloth. Since the relative distances between the joints of the transmission chain are relatively stable and the deformation of the transmission cloth is small, the change in its own shape causing the change in adhesion to the seasoning material is also small. When cleaning the transmission cloth, the tensioning roller abuts against the inner side of the transmission cloth, and the outer side of the transmission cloth expands and deforms, reducing its adhesion to the seasoning powder remaining on it, which is beneficial to improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a raw material drying device for seasoning production in an embodiment of the present invention.

[0027] Figure 2 It is a schematic diagram of the coordination structure of the conveyor belt and the terminal reversing wheel in an embodiment of the present invention.

[0028] Figure 3 It is a schematic diagram of the matching structure of the recessed sprocket and the material leveling plate in an embodiment of the present invention.

[0029] Figure 4 yes Figure 3 A partial enlarged view of part A in the middle.

[0030] Figure 5 1 is a schematic diagram of the installation structure of the installation rod and the installation sleeve in an embodiment of the present invention.

[0031] Figure 6 It is a schematic diagram of the matching structure of the terminal reversing wheel and the power assist member in an embodiment of the present invention.

[0032] Figure 7 It is a schematic diagram of the structural principle of the cleaning mechanism after the lifting platform moves in an embodiment of the present invention.

[0033] Reference numerals:

[0034] 1. Frame; 11. Dryer; 12. Tensioning block; 121. Tensioning spring; 2. Conveyor mechanism; 21. Conveyor belt; 211. Transmission chain; 212. Conveyor fabric body; 213. Drop portion; 22. Initial reversing wheel; 23. Final reversing wheel; 231. Support shaft; 24. Guide sprocket assembly; 241. Concave sprocket; 2411. Center shaft hole; 2412. Adjusting protrusion; 242. Support sprocket; 25. Material leveling plate; 2 51. Mounting rod; 2511. Adjusting slot; 252. Reciprocating spring; 253. Mounting bolt; 254. Mounting sleeve; 26. First drop sprocket; 27. Second drop sprocket; 3. Connecting cylinder; 31. Power assist member; 32. Connecting gear; 33. Driving gear; 4. Cleaning mechanism; 41. Lifting platform; 42. Dust box; 43. Cleaning roller; 44. Propelling wheel; 45. Auxiliary wheel; 46. Tensioning roller; 461. Contact wheel. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] The following combination Figures 1 to 7 The present invention describes a raw material drying device for seasoning production.

[0037] This embodiment discloses a raw material drying device for seasoning production, such as Figure 1 As shown, the machine comprises a frame 1, a dryer 11, a conveyor mechanism 2, and a cleaning mechanism 4. The conveyor mechanism 2 comprises a conveyor belt 21, a starting reversing wheel 22, a terminal reversing wheel 23, and a guide sprocket assembly 24. The starting and terminal reversing wheels 22 and 23 are rotatably mounted on the frame 1, with their axes of rotation being horizontal. The conveyor belt 21 circulates around the starting and terminal reversing wheels 22 and 23. A hot drying chamber is located on the frame 1, above the conveyor belt 21. The dryer 11 is connected to the hot drying chamber. The cleaning mechanism 4 is located on the frame 1 and below the conveyor belt 21. The upper portion of the conveyor belt 21 carries the seasoning ingredients through the hot drying chamber for drying. This portion of the conveyor belt 21 moves from the starting reversing wheel 22 to the terminal reversing wheel 23. The dryer 11 utilizes an electrically heated drying mechanism. The cleaning mechanism 4 is located on the frame 1 and below the conveyor belt 21. After drying, the cleaning mechanism 4 cleans the conveyor belt 21.

[0038] like Figure 1 and Figure 2As shown, the conveyor belt 21 includes a transmission chain 211 and a transmission cloth body 212. The transmission chain 211 is a roller type, and the transmission cloth body 212 is leather. There are two transmission chains 211 and they are respectively located on the two side edges of the transmission cloth body 212. The joint axis of the transmission chain 211 is fixedly connected to the side edge of the transmission cloth body 212; the starting end reversing wheel 22 and the end reversing wheel 23 are both sprockets and are engaged with the transmission chain 211. The starting end reversing wheel 22 and the end reversing wheel 23 are also provided with two coaxial wheels. The frame 1 is equipped with a motor (not shown) that drives the terminal reversing wheel 23. A tensioning block 12 is slidably mounted on the frame 1, and the starting reversing wheel 22 is rotatably connected to the tensioning block 12. The tensioning block 12 slides horizontally and perpendicular to the axis of the starting reversing wheel 22. A tensioning spring 121 is connected between the tensioning block 12 and the frame 1. In its natural state, the tensioning spring 121 applies a force against the tensioning block 12 away from the terminal reversing wheel 23, maintaining a constant tension on the transmission chain 211. The conveyor belt 212 moves synchronously with the trajectory of the transmission chain 211. Because the conveyor belt 21 is a circular conveyor belt with an inner and outer side, the starting and ending reversing wheels 22 and 23 are both located on the inner side of the conveyor belt 21, allowing the seasoning ingredients to come into direct contact with the outer side of the conveyor belt 212.

[0039] like Figure 1 As shown, the lower end of the starting reversing wheel 22 is at the same height as the lower end of the terminal reversing wheel 23, while the upper end of the starting reversing wheel 22 is higher than the upper end of the terminal reversing wheel 23. After leaving the starting reversing wheel 22, the conveyor belt 21 passes through the guide sprocket assembly 24 and then passes around the terminal reversing wheel 23. The guide sprocket assembly 24 includes a first drop sprocket 26 and a second drop sprocket 27 rotatably connected to the frame 1. The conveyor belt 21 passes around the starting reversing wheel 22, the first drop sprocket 26, the second drop sprocket 27, and the terminal 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 reversing wheel 22, and the lower end of the second drop sprocket 27 is at the same height as the upper end of the terminal reversing wheel 23. The first drop sprocket 26 is located on the inner side of the transmission chain 211, and the second drop sprocket 27 is located on the outer side of the transmission chain 211. The conveyor belt 21 forms a drop portion 213 between the first drop sprocket 26 and the second drop sprocket 27. The horizontal component of the moving direction of the drop portion 213 is toward the starting reversing wheel 22; when the conveyor belt 21 moves to the drop portion 213, the seasoning raw materials on the conveyor cloth 212 will perform free fall motion, thereby increasing the contact rate between the seasoning raw materials and the high-temperature gas in the hot drying chamber, thereby improving the drying effect.

[0040] like Figure 1As shown, the overall running direction of the conveyor belt 21 between the starting reversing wheel 22 and the first drop sprocket 26 and between the second drop sprocket 27 and the end reversing wheel 23 is horizontal; the guide sprocket group 24 also includes a support sprocket 242 and a recessed sprocket 241, which are used to form recesses in the two horizontal running parts of the conveyor belt 21 respectively. Taking the area between the starting reversing wheel 22 and the first drop sprocket 26 as an example, a single transmission chain 211 is correspondingly engaged with two support sprockets 242 and a recessed sprocket 241. The two support sprockets 242 are respectively located on the front and rear sides of the recessed sprocket 241. The recessed sprocket 241 is located on the outside of the transmission chain 211, and the support sprocket 242 is located on the inside of the transmission chain 211. The conveying cloth body 212 first descends and then rises when passing around the recessed sprocket 241, that is, a recessed structure is formed. The seasoning raw materials on the conveying cloth body 212 form a certain accumulation in this recessed space. When the conveying cloth body 212 leaves the recessed space, the thickness of the seasoning raw materials on it is reduced, that is, the degree of spreading of the seasoning raw materials is increased, thereby increasing the specific surface area of the seasoning raw materials and improving the overall drying effect.

[0041] like Figure 3 and Figure 4 As shown, a material stripping plate 25 is slidably provided on the frame 1. The material stripping plate 25 is located above the conveyor belt 21 and in the recessed space formed by the recessed sprocket 241. The surface of the material stripping plate 25 is a vertical plane. The lower edge of the material stripping plate 25 is formed with a wave structure, and there is a gap between the lower edge of the material stripping plate 25 and the surface of the conveying cloth body 212. A mounting rod 251 is detachably connected to the material stripping plate 25. 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, and the sliding direction is parallel to the axis of the recessed sprocket 241. The wall of the mounting rod 251 is provided with an adjustment groove 2511. The adjustment groove 2511 is a closed-loop groove surrounding the mounting rod 251 and its trajectory is a sine curve. An adjustment protrusion is fixedly connected to the wall of the central axis hole 2411. 2412, the adjusting protrusion 2412 is located in the adjusting groove 2511, and 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 protrusion 2412 applies abutting force to the groove wall of the adjusting groove 2511, and under the action of the horizontal component force, the mounting rod 251 moves back and forth along its own length direction. In the process of the reciprocating movement of the mounting rod 251 and the material transport plate, the lateral distribution of the seasoning raw materials passing through the material leveling plate 25 is more uniform.

[0042] like Figure 3 、 Figure 4 and Figure 5As shown, there are two mounting rods 251, one located on opposite sides of the screed plate 25. The cross-section of the portion where the mounting rods 251 and the frame 1 slide together is rectangular. A mounting sleeve 254 is fixedly connected to the screed plate 25. The mounting rods 251 are inserted into the mounting sleeve 254. Mounting bolts 253 are threaded through the mounting sleeve 254. The axis of the mounting bolts 253 is perpendicular to the axis of the mounting sleeve 254. The mounting bolts 253 pass through the mounting sleeve 254 and are threadedly connected to the mounting rods 251, thereby securing the two and facilitating removal of the screed plate 25 for cleaning.

[0043] like Figure 2 and Figure 6 As shown, when the seasoning ingredients on the conveyor belt 21 reach the terminal reversing pulley 23, they are removed from the frame 1. To increase the separation rate of the seasoning ingredients from the conveyor belt 21, a boosting member 31 is movably disposed on the frame 1 and inside the conveyor belt 21. The boosting member 31 exerts a contact force on the inner side of the conveyor fabric 212, causing the conveyor fabric 212 to vibrate. The location where the conveyor fabric 212 is subjected to the abutment of the boosting member 31 is located at the portion of the conveyor belt 21 where it winds around the terminal reversing pulley 23. The boosting member 31 is a plurality of boosting rollers. A support shaft 231 is coaxially fixedly connected between the two terminal reversing pulleys 23. A connecting cylinder 3 is coaxially sleeved on the support shaft 231, i.e., the connecting cylinder 3 is coaxially rotatable relative to the support shaft 231. The plurality of boosting rollers are arranged in a circumferential array around the connecting cylinder 3. The boosting rollers are rotatably connected to the sidewalls of the connecting cylinder 3, with their rotational axes parallel to the axis of the connecting cylinder 3. The diameter of the connecting cylinder 3 is relatively small, so its sidewalls do not contact the conveyor fabric 212. A connecting gear 32 is coaxially fixedly connected to the connecting cylinder 3. A drive gear 33 is rotatably mounted on the frame 1 and meshes with the connecting gear 32. A motor (not shown) is also mounted on the frame 1 to drive the drive gear 33. Driven by the drive gear 33, the connecting cylinder 3 rotates at a speed higher than that of the terminal reversing pulley 23. Each assist roller alternately abuts the inner side of the conveyor fabric 212, causing it to continuously vibrate and improve the success rate of removing the seasoning ingredients from it. The contact between the assist rollers and the conveyor fabric 212 is minimal, resulting in minimal deformation of the conveyor fabric 212, which has little negative impact on the meshing stability between the drive chain 211 and the terminal reversing pulley 23.

[0044] like Figure 1 and Figure 7As shown, the cleaning mechanism 4 includes a lifting platform 41, a dust box 42, and a cleaning roller 43. The lifting platform 41 is slidably connected to the frame 1 in the vertical direction. The frame 1 is provided with a cylinder for driving the lifting platform 41 to slide. The opening of the dust box 42 faces the conveyor belt 21 from bottom to top, and the cleaning roller 43 is located at the opening of the dust box 42. A tensioning roller 46 is rotatably provided on the frame 1, and the tensioning roller 46 is located on the inner side of the conveyor belt 21. The lifting platform 41 is also rotatably provided with a propulsion wheel 44 and an auxiliary wheel 45. The propulsion wheel 44 is a sprocket that meshes with the outer side of the transmission chain 211, and the auxiliary wheel 45 rolls against the inner side of the transmission chain 211. The two form a clamping posture on the transmission chain 211, so that the transmission chain 211 will not detach from the propulsion wheel 44. The rotational axes of the tensioning roller 46 and the cleaning roller 43 are parallel to the rotational axis of the terminal reversing wheel 23. There are two sets of propulsion wheels 44, one on each side of the tensioning roller 46. When the lifting platform 41 moves toward the tensioning roller 46, the two propulsion wheels 44 push the conveyor belt 21 until the conveyor fabric 212 of the conveyor belt 21 contacts the tensioning roller 46, causing the conveyor fabric 212 to deform under stress, with the deformation taking the form of a concave inner side and a convex outer side. Simultaneously, the cleaning roller 43 contacts the outer surface of the conveyor fabric 212. To reduce the tensile stress at the connection between the transmission chain 211 and the transmission fabric 212 when the tensioning roller 46 contacts the conveyor belt 21 during the cleaning process, a contact wheel 461 is coaxially 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 transmission fabric 212 and the tensioning roller 46 contact, the transmission chain 211 and the contact wheel 461 contact each other.

[0045] like Figure 1 and Figure 7 As shown, a motor (not shown) is mounted on the lifting platform 41 to drive the cleaning roller 43. As the cleaning roller 43 rotates, it rubs against the conveyor cloth 212, creating a friction force opposite to the direction of the conveyor cloth 212's movement. A negative pressure air source is connected to the interior of the dust box 42. During the cleaning process, a negative pressure airflow is generated at the opening of the dust box 42, absorbing the powder rubbed by the cleaning roller 43.

[0046] The working process of this embodiment:

[0047] During the drying process of the seasoning ingredients and the cleaning of the conveyor fabric 212, the direction of the transmission chain 211 corresponds to the direction of the conveyor fabric 212. The sprockets of the conveyor mechanism 2 only tension and guide the conveyor sprockets of the conveyor belt 21 and do not exert any mechanical effect on the conveyor fabric 212, resulting in minimal deformation of the conveyor fabric 212. During cleaning, the tensioning roller 46 contacts the conveyor fabric 212, causing deformation. However, due to the tensioning protrusions on its outer surface, the adhesion of the seasoning powder to the conveyor fabric 212 is reduced, making it easier for the powder to separate from the conveyor fabric 212.

[0048] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A raw material drying device for seasoning production, comprising a frame, a dryer, a conveying mechanism, and a cleaning mechanism, wherein the conveying mechanism comprises a conveyor belt, a starting reversing wheel, a terminal reversing wheel, and a guide sprocket assembly, wherein the guide sprocket assembly comprises a supporting sprocket and a recessed sprocket, wherein the starting reversing wheel and the terminal reversing wheel are rotatably mounted on the frame, and the conveyor belt circulates around the starting reversing wheel and the terminal reversing wheel, wherein the cleaning mechanism comprises a lifting platform and a cleaning roller, wherein the cleaning roller is rotatably mounted on the lifting platform, and wherein the lifting platform is slidably connected to the frame; It is characterized by: The conveyor belt includes an inner side and an outer side, and the seasoning powder and the cleaning roller are both in contact with the outer side of the conveyor belt. A tensioning roller is rotatably provided 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 provided on the lifting platform, and the propulsion wheel is in contact with the outer side of the conveyor belt. When the lifting platform moves close to the conveyor belt, the tensioning roller and the cleaning roller respectively abut against opposite sides of the conveyor belt. A power-assisting member is provided on the frame and on the inner side of the conveyor belt. The power-assisting member is movably connected to the frame. The power-assisting member generates a contact force on the inner side of the conveyor belt. The position where the conveyor belt is subjected to the contact force of the power-assisting member is located at the portion where the conveyor belt is wound around the terminal reversing wheel. A material leveling plate is slidably provided 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, the lower edge of the material leveling plate is formed with a wave structure, and the sliding direction of the material leveling plate is horizontal and perpendicular to the moving direction of the conveyor belt; A mounting rod is connected to the material leveling plate, and a central axis hole is provided on the recessed sprocket for the mounting rod to pass through coaxially. The mounting rod and the frame are slidably connected, and the sliding direction is parallel to the axis of the recessed sprocket. An adjustment groove is provided on the rod wall of the mounting rod, and the adjustment groove is a closed-loop groove surrounding the mounting rod. The trajectory of the adjustment groove is a sine curve. An adjustment protrusion is fixedly connected to the hole wall of the central axis hole, and the adjustment protrusion is located in the adjustment groove. A reciprocating spring is connected between the mounting rod and the frame.

2. A raw material drying device for seasoning production according to claim 1, characterized in that: The conveyor belt includes a transmission chain and a transmission cloth body. The joint shaft of the transmission chain is fixedly connected to the side edge of the transmission cloth body. The starting reversing wheel, the terminal reversing wheel and the propulsion wheel are all sprockets and are engaged with the transmission chain. The tensioning roller, the cleaning roller and the auxiliary member are all in contact with the transmission cloth body. The end of the tensioning roller is coaxially fixedly connected with a contact wheel. When the transmission cloth body and the tensioning roller are in contact, the transmission chain and the contact wheel are in contact.

3. The raw material drying device for seasoning production according to claim 2, characterized in that: There are two end reversing wheels that are coaxial with each other, and a support shaft is coaxially fixedly connected between the two end reversing wheels. A connecting tube is coaxially sleeved on the support shaft. The assisting member is an assisting roller, and the roller wall of the assisting roller is in contact with the inner side of the conveying cloth body. There are multiple assisting rollers and they are arranged in a circumferential array around the connecting tube. The assisting roller is rotatably connected to the side wall of the connecting tube, and the rotation axis is parallel to the axis of the connecting tube.

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

5. The raw material drying device for seasoning production according to claim 2, characterized in that: After leaving the starting end reversing wheel, the conveyor belt passes through the guide sprocket set and then bypasses the terminal reversing wheel. There are two support sprockets and they are respectively located on opposite sides of the recessed sprocket. The recessed sprocket is located on the upper side of the conveyor belt, and the support sprocket is located on the inner side of the conveyor belt. When the conveyor belt bypasses the recessed sprocket, a recess is formed on the outer side of the conveying cloth body.

6. The raw material drying device for seasoning production according to claim 5, characterized in that: The guide sprocket assembly also includes a first drop sprocket and a second drop sprocket rotatably connected to the frame. The conveyor belt passes around the starting reversing wheel, the first drop sprocket, the second drop sprocket and the end reversing wheel in sequence. The first drop sprocket is higher than the second drop sprocket. The conveyor belt forms a drop portion between the first drop sprocket and the second drop sprocket. The horizontal component of the moving direction of the drop portion is toward the starting reversing wheel.

7. The raw material drying device for seasoning production according to claim 2, characterized in that: A tensioning block is slidingly provided on the frame, and the starting reversing wheel is rotatably connected to the tensioning block. The sliding direction of the tensioning block is horizontal and the axis of the starting reversing wheel is vertical. A tensioning spring is connected between the tensioning block and the frame. In a natural state, the direction of the abutting force applied by the tensioning spring to the tensioning block is away from the end reversing wheel.

8. A raw material drying device for seasoning production according to any one of claims 1 to 7, characterized in that: The cleaning mechanism also includes a dust box, which is fixedly connected to the lifting platform, with the box opening of the dust box facing the conveyor belt, the cleaning roller is located at the box opening of the dust box, and the inner cavity of the dust box is connected to a negative pressure air source.

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