Full-automatic multi-layer circulating incense stick high-efficiency energy-saving drying box

Abstract

The full-automatic multi-layer circulating incense stick high-efficiency energy-saving drying box comprises a drying box body and a heater, the drying box body is internally provided with a heating ventilation channel extending along the length direction of the drying box body, at least one upper drying channel and at least one lower drying channel, a group of parallelly arranged closed-loop conveying chains connecting the upper drying channel and the lower drying channel, a transmission sprocket, a plurality of incense stick placing racks arranged in sequence with gaps on the conveying chains, an incense stick loading port is arranged at one end of the drying box body, a fan and the heater are arranged in the heating ventilation channel, both ends of the heating ventilation channel are communicated with both ends of the upper drying channel and the lower drying channel, both side edges of the incense stick placing rack are rotationally connected with corresponding conveying chains arranged in parallel, and the incense stick placing rack is driven by the conveying chains to realize multi-layer circulating drying in the inner cavity of the drying box body. The present application is energy-saving and high-efficiency, has small floor space, and can be widely applied in large-scale incense stick production.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying, in particular to a full-automatic multi-layer circulating incense stick high-efficiency energy-saving drying box. BACKGROUND

[0002] The manufacturers of incense sticks (also known as wood powder bamboo stick, incense, incense stick, Buddhist incense, bamboo stick incense, incense column, and mosquito incense) for fumigation mostly use the sun-drying method to dry the wood powder on the bamboo stick. If it is cloudy or windy and rainy, production cannot be carried out. The wood powder on the bamboo stick needs to be completely spread out for sun-drying, so a large production site is required. At the current stage, the cost of land is high, which is a great cost for enterprises. Therefore, many manufacturers design drying rooms equipped with heaters. The pre-made incense sticks are placed on a trolley, which is then pushed into the drying room by hand for drying. After drying, the trolley is pulled out together with the incense sticks by hand. The mosquito incense initial product drying trolley disclosed in patent number CN201721555800.5 is sent into the drying room for drying by the trolley. This drying method is not affected by the weather, but the trolley is heated every time the drying is carried out. When it is cold outside, the temperature of the trolley sent in is low, and it often takes several hours to rise to the drying temperature of the drying room, resulting in high power consumption of the drying room and high cost of mosquito incense drying. In addition, this trolley can only move horizontally. If there are multiple drying layers in the drying room, the trolley may tip over when transferring from an upper drying layer to a lower drying layer, causing the mosquito incense on it to break and causing economic loss. If there is only one layer of drying room, the area occupied by the drying room is large and the drying efficiency is low. Therefore, there is an urgent need to develop an incense stick drying device that occupies a small area, has high drying efficiency, is low in labor cost, is energy-saving, and is not affected by the weather. SUMMARY

[0003] The present application relates to the technical field of drying, in particular to a full-automatic multi-layer circulating incense stick high-efficiency energy-saving drying box.

[0004] The technical solution of the present application is as follows:

[0005] The fully automatic multi-layer circulating incense stick high-efficiency energy-saving drying oven of the present invention includes an oven body and a heater. Its features are as follows: the oven body is provided with a heating and ventilation channel extending along the length of the oven body, an upper drying channel above the heating and ventilation channel, a lower drying channel below the heating and ventilation channel, a set of parallel closed-loop conveyor chains connecting the upper and lower drying channels, a transmission sprocket meshing with the conveyor chains, and multiple incense stick placement racks arranged sequentially and intermittently on the conveyor chains. The transmission sprockets are connected to a drive device. One end of the oven body has an incense stick loading inlet. The heating and ventilation channel contains a fan and the heater. Both ends of the heating and ventilation channel are connected to both ends of the upper and lower drying channels. Under the action of the heater and the fan, the upper and lower drying channels can form a thermal circulation loop with the heating and ventilation channel. The two sides of the incense stick placement racks are rotatably connected to the corresponding parallel conveyor chains via rotating shafts or rotating shafts with connecting plates. The incense stick placement racks achieve multi-layer circulating drying within the oven body cavity under the drive of the conveyor chains. For example, the incense stick holder can be moved from the front end of the oven cavity to the upper drying channel by a conveyor chain, and then return to the starting position through the rear end of the oven cavity and the lower drying channel to achieve multi-layer circulating drying. Alternatively, the incense stick holder can be moved from the front end of the oven cavity to the lower drying channel by a conveyor chain, and then return to the starting position through the rear end of the oven cavity and the upper drying channel to achieve multi-layer circulating drying.

[0006] The heater can be an existing air-source dryer or heat pump, and the fan can be an exhaust fan, preferably an existing fire-fighting axial flow fan. The heater and the fan are arranged one in front of the other.

[0007] Furthermore, the overall center of gravity of the incense stick placement rack is located at the bottom or the bottom of the incense stick placement rack is equipped with a counterweight, so that the incense stick placement rack can always maintain an upright and balanced state during the conveying process and is not prone to automatic tilting and overturning. This effectively avoids the problem of the incense sticks falling out and breaking during the horizontal and vertical conveying process.

[0008] To ensure that this invention, while occupying a small footprint, prevents collisions or bumps between multiple incense stick holders during vertical and horizontal transport via the conveyor chain, the incense stick holders are equipped with rotating shafts and connecting plates (also called side connecting plates) on both sides. One end of the connecting plate is rotatably connected to the rotating shaft, and the other end is fixedly mounted on the corresponding conveyor chain. In this way, when the incense stick holders reach a corner, they form a V-shaped angle through the connecting plates, preventing collisions with adjacent holders.

[0009] Further, the upper drying channel and the lower drying channel are respectively provided with guide rails at both sides, and the conveying chain is located on the guide rails at both sides of the upper drying channel and the lower drying channel.

[0010] In order to make the incense stick placing rack capable of placing and drying incense sticks in multiple layers, effectively reduce the area occupied by batch drying of incense sticks in the drying box, and make the positioning and drying effect of each incense stick good, the incense stick placing rack comprises an outer frame and a plurality of sieve plates stacked in the outer frame from bottom to top, the sieve plates are provided with a plurality of rows of arc-shaped insertion grooves arranged in transverse parallel separation, the arc-shaped insertion grooves of the sieve plates are used for placing incense sticks, a plurality of air holes are formed in each row of arc-shaped insertion grooves, and a gap for gas convection is formed between two adjacent sieve plates.

[0011] The outer frame comprises a bottom frame plate, a top frame plate and side frame plates located at both sides, the sieve plates are stacked between the bottom frame plate and the top frame plate, the middle part of the side frame plate is provided with a shaft hole for mounting the rotating shaft, and the outer frame is rotatably connected to the rotating shaft. Preferably, the distance from the rotating shaft to the top frame plate is less than the distance from the rotating shaft to the bottom frame plate. In this way, the overall center of gravity of the incense stick placing rack is in the lower part. The lower end of the side frame plate can also be provided with a counterweight. Alternatively, the above two schemes can be combined.

[0012] In order to make the structure more reliable, further, at least one layer frame plate is further arranged between the bottom frame plate and the top frame plate of the outer frame.

[0013] Further, the drying box body is provided with an industrial control box connected with the driving device, the heater and the fan circuit. Further, the incense stick loading port is arranged at the front end of the drying box body, and a material arrival sensor is arranged at the incense stick loading port, the material arrival sensor is connected with the industrial control box circuit, the material arrival sensor sends information to the industrial control box after sensing that the sieve plates are fully inserted with incense sticks, and the industrial control box sends a command to the driving device to drive the conveying chain to move the incense stick placing rack up or down by one layer of sieve plates.

[0014] In order to avoid the collision of the stick holder when it runs to the upper or lower drying channel in the drying box, especially when it turns, and to make the stick holder run smoothly, and to facilitate the pouring of the material, the outer frame 1 is provided with guide columns 18 or guide wheels (also called rollers) at the bottom and / or top corners. Preferably, both the bottom and top corners are provided with guide wheels. In order to realize automatic pouring of the stick holder after drying, the bottom plate of the lower drying channel is provided with a blocking piece near the front end outlet for realizing pouring. The blocking piece can make the stick holder tilt forward to realize pouring by blocking the bottom of the stick holder during the movement of the stick holder to the outlet. The blocking piece is a guide slope with at least one forward inclined surface. In order to prevent the bottom of the stick holder from shaking too much when falling from the upper end of the guide slope, preferably two to three small inclined surfaces are arranged on the guide slope for buffering.

[0015] The advantages of the present application compared with the prior art are:

[0016] I. Directly using the drying box to realize the drying of the stick, and the production of the stick is not affected by the climate.

[0017] II. At least one upper drying channel and at least one lower drying channel are arranged above and below the heating ventilation channel in the drying box body, and a set of closed loop conveying chains are arranged in parallel to connect the upper and lower drying channels. A plurality of stick holders are arranged in sequence and with gaps on the conveying chains. The stick holders loaded with wood powder and not dried sticks are moved from the front end of the drying box body to the upper drying channel, and then return to the starting position through the rear end of the drying box body and the lower drying channel, thereby realizing multi-layer circulating drying. This multi-layer circulating drying structure is compact, and compared with the existing one-layer drying layer drying room, it can greatly reduce the floor area of the production site. Moreover, the upper and lower drying channels can form a heat circulation loop under the action of the heater and the fan, so the drying effect is good and the drying efficiency is high.

[0018] III. Because the stick holder is always located in the drying box during the drying process, the stick is directly inserted into the stick holder through the stick loading port, and there is no need to take out the stick holder to load the stick outside the drying box. Therefore, during the drying process, the stick holder only needs to be heated once in the drying box, and it is always hot afterwards, effectively reducing the power consumption of multiple heating of the stick holder, and saving energy.

[0019] IV. Because the overall center of gravity of the stick holder is located at the lower part or the lower part of the stick holder is provided with a balance counterweight, the stick holder can always maintain a straight and balanced state during the conveying process, and is not prone to automatic dumping and overturning. This effectively avoids the problem of automatic dumping and falling of the stick during horizontal and vertical conveying, and ensures safety in use.

[0020] Five, the incense stick rack can stack and place the incense sticks with un-dried wood powder (incense powder) in multiple layers, further effectively reduce the area occupied by batch drying of the incense sticks, and enable good positioning and good ventilation and drying effect of each incense stick.

[0021] The application will be further described below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The figure is a schematic diagram of the overall structure of an embodiment of the application;

[0023] Figure 2 The figure is a schematic diagram of the three-dimensional structure of an embodiment of the application after removing the peripheral edges;

[0024] Figure 3 The figure is a schematic diagram of the structure of the incense stick rack in the application;

[0025] Figure 4 The figure is a schematic diagram of the assembly structure of the incense stick rack; Figure 3

[0026] Figure 5 The figure is a schematic diagram of the enlarged structure of the sieve plate. DETAILED DESCRIPTION

[0027] As Figures 1-5 ​As shown, the full-automatic multi-layer circulating incense stick high-efficiency energy-saving drying box of the present application comprises a drying box body 1 and a heater 2. The drying box body 1 comprises a support frame and a surrounding edge arranged outside the support frame. The surrounding edge is generally made of thermal insulation cotton board. The drying box body 1 is internally provided with a heating ventilation channel 3 extending along the length direction of the drying box body 1, at least one upper drying channel 4 located above the heating ventilation channel 3, at least one lower drying channel 5 located below the heating ventilation channel 3, a group of parallelly arranged closed-loop conveying chains 6 connecting the upper drying channel 4 and the lower drying channel 5, a transmission sprocket 7 engaged with the conveying chains 6, and a plurality of incense stick placing racks 8 sequentially and gap-arranged on the conveying chains 6. The transmission sprocket 7 is connected with a driving device. One end of the drying box body 1 is provided with an incense stick loading inlet. The incense stick loading inlet can be a long slot directly opened on the front end surrounding edge of the drying box body. Alternatively, a box door capable of being opened and closed can be arranged at the front end of the drying box body, and the incense stick loading inlet 11 is a long insertion slot opened on the box door. Alternatively, a cover plate capable of being opened and closed can be arranged on the incense stick loading inlet, and the incense stick loading inlet is sealed by the cover plate after the incense sticks are loaded. The transmission sprocket 7 is generally arranged on the mounting seat at both ends of the upper drying channel and the lower drying channel. The heating ventilation channel 3 is internally provided with a fan 9 and the heater 2. Both ends of the heating ventilation channel 3 are communicated with both ends of the upper drying channel 4 and the lower drying channel 5. The upper drying channel 4 and the lower drying channel 5 can form a heat circulation loop with the heating ventilation channel 3 under the action of the heater 2 and the fan 9. For example, the air heated by the heater or the hot air blown out by the heater forms accelerated hot air under the action of the wind power of the fan, the hot air flows from the rear end outlet of the heating ventilation channel 3 to the upper drying channel 4 and the lower drying channel 5, and then returns to the heating ventilation channel from the front end inlet, thereby forming an upper drying heat circulation loop and a lower drying heat circulation loop, so that the drying efficiency is high. Further, the two side edges of the incense stick placing rack 8 are respectively rotationally connected with the corresponding parallelly arranged conveying chains 6 through a rotating shaft a or a rotating shaft a plus a connecting plate c. The incense stick placing rack 8 is driven by the conveying chains 6 to move from the front end part of the inner cavity of the drying box body 1 to the upper drying channel 4, and then returns to the starting position through the rear end part of the inner cavity of the drying box body 1 and the lower drying channel 5, thereby realizing multi-layer circulating drying. The driving device comprises a motor, a gear transmission group connected with the motor, two driving sprockets and a plurality of driven sprockets (six driven sprockets as shown). The two driving sprockets can be respectively connected with a servo motor and a gear transmission group. Preferably, the first driving sprocket of the two driving sprockets is connected with the gear transmission group and the motor, and the second driving sprocket is connected with the first driving sprocket through a synchronous shaft. For example, the two driving sprockets can be directly arranged on a synchronous shaft.In order to avoid the influence of the synchronous rotating shaft on the conveying of the stick holder 8 on the transmission sprocket, the synchronous rotating shaft can also be arranged below the driving sprocket, driving shafts extending to the side are arranged on the two driving sprockets at the two ends of the upper drying channel, synchronous sprockets are arranged on the outer ends of the two driving shafts, and the synchronous sprockets are connected with the synchronous sprockets on the synchronous rotating shaft through independent chains, so as to realize the synchronization of the two driving sprockets. Of course, synchronization can also be realized through other ways, which will not be described in detail.

[0028] In the present application, preferably, a heating ventilation channel 3 extending along the length direction of the oven body 1 is arranged in the oven body 1, an upper drying channel 4 is arranged above the heating ventilation channel 3, and a lower drying channel 5 is arranged below the heating ventilation channel 3, as shown in Figures 1-2 The upper drying channel can also be provided with a three-layer structure as described above, that is, two sets of circulating drying systems are arranged in the oven body. Alternatively, a heating ventilation channel 3 extending along the length direction of the oven body 1 is arranged in the oven body 1, two upper drying channels 4 are arranged above the heating ventilation channel 3, two lower drying channels 5 are arranged below the heating ventilation channel 3, a group of parallel arranged closed-loop conveying chains I connecting the uppermost upper drying channel 4 and the lowermost lower drying channel 5, transmission sprockets I engaged with the conveying chains I, and a plurality of stick holders sequentially and gap arranged on the conveying chains I. A group of parallel arranged closed-loop conveying chains II connecting the middle upper drying channel 4 and the middle lower drying channel 5, transmission sprockets II engaged with the conveying chains II, and a plurality of stick holders sequentially and gap arranged on the conveying chains II. The conveying chains I and the conveying chains II are arranged at a distance apart at the two ends in the oven body, so as to avoid the stick holders on the conveying chains I and the conveying chains II from colliding with each other during operation. In addition, the stick holders on the conveying chains I and the conveying chains II are preferably staggered, so as to facilitate the insertion of sticks. Preferably, the stick holder 8 filled with wood powder and un-dried sticks is moved from the front end of the inner cavity of the oven body 1 to the upper drying channel 4 under the driving of the conveying chain 6, and then moves from the rear end of the inner cavity of the oven body 1 to the lower drying channel 5. When the stick holder 8 reaches the outlet of the lower drying channel 5, it has reached the drying standard (this can be realized by setting the length and temperature standard of the drying oven), so that the dried sticks can be unloaded, and the empty stick holder 8 can be returned to the starting position, so as to prepare for the next round of stick loading and temperature removal.

[0029] In order to make the stick holder 8 balanced during the conveying process, the overall gravity center of the stick holder 8 is located at the lower part or a counterweight is arranged at the lower part of the stick holder 8, so that the stick holder 8 can always keep a straight balanced state during the conveying process and is not prone to automatic dumping and overturning. Scheme one: the stick holder 8 can be directly connected to the conveying chain 6 through the rotation shafts at both sides, one end of the rotation shaft is rotationally connected with the shaft hole arranged on the stick holder 8, and the other end is fixed on the conveying chain 6. Scheme two: in order to prevent the multiple stick holders from colliding or bumping during the upward and downward conveying and horizontal conveying, preferably, the rotation shaft a and the connecting plate c are arranged on the two side edges of the stick holder 8, one end of the connecting plate c is rotationally connected with the rotation shaft, and the other end is fixedly installed on the corresponding conveying chain 6. The installation position of the conveying chain 6 in the upper drying channel 4 is located at both sides of the upper drying channel 4, and the installation position of the conveying chain 6 in the lower drying channel 5 is located at both sides of the lower drying channel 5. The specific installation position can be determined according to the needs. In order to prevent the conveying chain from deviating or overturning under the gravity of the stick holder, guide rails are arranged at both sides of the upper drying channel 4 and the lower drying channel 5 for installing the corresponding conveying chain. The guide rail can be a horizontal U-shaped guide rail or a horizontal rail plus a pressing plate, and the corresponding conveying chain is installed between the horizontal rail and the upper pressing plate. For example, guide rails are arranged at both sides of the top plate of the upper drying channel 4 and the lower drying channel, the installation position of the conveying chain 6 in the upper drying channel 4 is located on the guide rails at both sides of the top plate of the upper drying channel 4, and the installation position of the conveying chain 6 in the lower drying channel 5 is located on the guide rails at both sides of the top plate of the lower drying channel 5. Preferably, the installation position of the conveying chain 6 in the upper drying channel 4 is located on the guide rails at both sides of the bottom plate of the upper drying channel 4, and the installation position of the conveying chain 6 in the lower drying channel 5 is located on the guide rails at both sides of the top plate of the lower drying channel 5. At this time, the distance from the rotation shaft a to the bottom plate of the upper drying channel 4 is greater than the length from the rotation shaft a to the bottom surface of the stick holder 8. The distance from the rotation shaft a to the top plate of the lower drying channel 4 is greater than the length from the rotation shaft a to the top surface of the stick holder 8.

[0030] In order to further improve the drying efficiency of the present application, as Figures 3-5As shown, the incense stick placing rack 8 comprises an outer frame 81 and a plurality of screens 82 stacked from bottom to top in the outer frame 81, the screens 82 are provided with a plurality of rows of arc-shaped insertion slots 821 arranged in transverse parallel separation, the arc-shaped insertion slots of the screens 82 are used for placing incense sticks, that is to say, the arc-shaped insertion slots are insertion sites for inserting incense sticks, a plurality of air holes 822 are opened on each row of arc-shaped insertion slots, and a gap for gas convection is formed between two adjacent screens 82. The screens 82 are generally made of hard plastic. The outer frame is generally made of metal. The bottom of the screen 82 is provided with a separation support edge 823, and the gap for gas convection is formed between two adjacent screens 82 through the separation support edge 823. In order to prevent the stacked screens 82 from being displaced when the incense sticks are inserted, the upper end surface of the two end side plates of the screen is respectively provided with a clamping column 824, and the lower end surface is respectively provided with a corresponding insertion hole, and the two adjacent screens are reliably stacked together through the cooperation of the clamping column of the lower screen and the insertion hole of the upper screen.

[0031] The outer frame 81 comprises a bottom frame plate 812, a top frame plate 811 and side frame plates 813 on both sides, the screens 82 are stacked between the bottom frame plate 812 and the top frame plate 811, the middle part of the side frame plate 813 is provided with a shaft hole for mounting the rotating shaft a, and the outer frame 81 is rotatably connected to the rotating shaft a. Further, at least one layer frame plate 814 is further provided between the bottom frame plate 812 and the top frame plate 811 of the outer frame 81, and the distance from the rotating shaft a to the top frame plate 811 is smaller than the distance from the rotating shaft a to the bottom frame plate 812. Further, guide columns or guide wheels 815 are provided at the bottom and top corners of the incense stick placing rack 8.

[0032] For convenient operation, the incense stick loading port 11 is arranged at the front end of the oven body 1, and a material sensing device is arranged at the incense stick loading port. An industrial control box 10 is further arranged on the oven body 1 and is electrically connected with the material sensing device 13 and the driving device. The material sensing device can be arranged above or below or on both sides of the incense stick loading port, and the specific installation position is determined according to the needs. When the incense sticks are inserted into the sieve plate 82, the material sensing device 13 sends information to the industrial control box 10, and the industrial control box 10 sends instructions to the driving device to drive the conveying chain 6 to move the incense stick placing rack 8 up by one layer of sieve plate 8 (if the incense stick placing rack 8 is circulated and dried from bottom to top, it is moved down by one layer of sieve plate 8). The motor is a servo motor or a stepping motor. The industrial control box 10 includes a box body with a built-in control circuit board, a display screen and a plurality of operation buttons arranged on the box body. The operation buttons include a start button, a heating button and a fan button. In order to balance the incense stick placing rack after inserting the incense stick each time, the front end of the oven body 1 is further provided with a limiting structure for limiting the insertion depth of the incense stick. The limiting structure can be designed according to the needs, such as a limiting reference column arranged at the incense stick insertion position of the front end of the oven body; preferably, a vertical balance baffle arranged behind the incense stick placing rack. The balance baffle is rotatably connected to the support frame of the oven body 1 through a rotating shaft. When the incense stick is inserted, the balance baffle can limit the length of the incense stick extending behind the incense stick placing rack. The balance baffle can also be adjusted in position to be arranged on the support frame to adapt to the insertion limiting of incense sticks of different lengths. In order to realize automatic unloading of the incense stick placing rack after drying the incense stick, the bottom plate of the lower drying channel 5 near the front end of the outlet is provided with a blocking piece k for realizing unloading. The blocking piece k can realize the unloading of the incense stick placing rack 8 by the blocking action on the bottom of the incense stick placing rack 8 during the movement of the incense stick placing rack 8 to the outlet. The blocking piece k is a guide slope piece with at least one front inclined surface. The guide slope piece can be adjusted in position and arranged on the bottom plate of the lower drying channel 5. Preferably, the bottom plate of the lower drying channel 5 near the outlet is provided with a slot for the upward extension of the guide slope piece, and the guide slope piece can be movably arranged at the slot. In order to prevent the sieve plate from falling off during the unloading of the incense stick placing rack 8, small blocking edges are arranged on one side of the two side edges of the outer frame 81 in the unloading direction. Further, an output belt for receiving and transporting the incense sticks unloaded from the incense stick placing rack 8 can be arranged at the outlet of the lower drying channel.

[0033] In use, the start button is pressed, the heater and fan are started to achieve heating and heat circulation. The operator inserts a plurality of sticks into the arc-shaped insertion slots on the screen of the stick placement rack from the stick loading port, starting from the first layer of screen. When the first layer of screen 82 is full of sticks, the information is sent to the industrial computer box 10, which sends instructions to the servo motor to move the stick placement rack 8 up by one layer of screen 8 position, and then insert the sticks into the second layer of screen. After the second layer of screen is full, move up by one layer again. Repeat the stick insertion process several times until all the screens on the stick placement rack 8 are full of sticks. Then the stick placement rack 8 is transported to the upper drying channel, and the next stick insertion process is performed. When all the stick placement racks 8 on the conveying chain are full of sticks. At the same time, the stick placement racks are conveyed along the upper drying channel to the lower drying channel by the servo motor, transmission gear and conveying chain. In the drying process, when the heater heats to the set drying temperature in the box, the heat pump of the heater stops heating. When the temperature in the box is lower than the drying temperature, the heat pump restarts heating. Repeat the process. After drying, when the stick placement rack moves to the outlet of the lower drying channel, the inclined guide at the outlet can make the stick placement rack 8 tilt forward to achieve unloading by blocking the bottom of the stick placement rack 8 during movement to the outlet. At this time, the stick can be received by the receiving box or by the output belt set below the lower drying channel. Therefore, it is not necessary to manually remove the sticks from the stick placement rack or unload the stick placement rack, further improving the production efficiency. The stick placement rack 8 after unloading returns to the starting position under the action of the conveying chain, ready for the next round of stick drying. This drying box only needs one to operate, which greatly reduces the labor cost.

[0034] In the description of the present patent, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present patent.

[0035] Although the present application is described with reference to specific embodiments, such description is not meant to limit the present application. The heating ventilation passage and the upper drying passage and the lower drying passage can also be arranged along the width direction of the oven body 1, and the direction of inserting the incense sticks into the incense stick placing rack 8 can be adjusted accordingly. The equivalent technical solutions are within the scope of the present application. Other changes of the disclosed embodiments can be anticipated by those skilled in the art according to the description of the present application, and such changes should be within the scope of the appended claims.

Claims

1. A fully automatic multi-layer circulating incense stick high-efficiency energy-saving drying oven, comprising an oven body (1) and a heater (2), characterized in that: The oven body (1) is provided with a heating ventilation channel (3) extending along the length direction of the oven body (1), an upper drying channel (4) located above the heating ventilation channel (3), a lower drying channel (5) located below the heating ventilation channel (3), a group of parallel arranged closed loop type conveying chains (6) connecting the upper drying channel (4) and the lower drying channel (5), a transmission sprocket (7) engaged with the conveying chains (6), a plurality of incense stick placing racks (8) arranged in sequence and gaps on the conveying chains (6), wherein the transmission sprocket (7) is connected with a driving device, one end of the oven body (1) is provided with an incense stick loading entrance, the heating ventilation channel (3) is provided with a fan (9) and the heater (2), both ends of the heating ventilation channel (3) are communicated with both ends of the upper drying channel (4) and the lower drying channel (5), the upper drying channel (4) and the lower drying channel (5) can form a heat circulation loop with the heating ventilation channel (3) under the action of the heater (2) and the fan (9), both sides of the incense stick placing rack (8) are rotatably connected with the corresponding conveying chain (6) arranged in parallel through a rotating shaft (a) or a rotating shaft (a) plus a connecting plate (c), the incense stick placing rack is driven by the conveying chain to realize multi-layer circulating operation drying in the inner cavity of the oven body. The incense stick placing rack (8) comprises an outer frame (81) and a plurality of sieve plates (82) stacked from bottom to top in the outer frame (81), a plurality of rows of arc-shaped insertion slots (821) are arranged in transverse parallel separation on the sieve plate (82), a plurality of air holes (822) are formed on each row of arc-shaped insertion slots, a gap for gas convection is formed between two adjacent sieve plates (82), the outer frame (81) comprises a bottom frame plate (812), a top frame plate (811) and side frame plates (813) located on both sides, and at least one layer frame plate (814) is further arranged between the bottom frame plate (812) and the top frame plate (811) of the outer frame (81), and the sieve plate (82) is stacked on the layer frame plate (814) between the bottom frame plate (812) and the top frame plate (811).

2. The full-automatic multi-layer circulating incense stick high-efficiency energy-saving drying box according to claim 1, characterized in that: The overall center of gravity of the incense stick placing rack (8) is located in the lower part or a balance weight is arranged in the lower part of the incense stick placing rack (8), so that the incense stick placing rack (8) can always maintain an upright balanced state during conveying and is not prone to automatic dumping and overturning.

3. The full-automatic multi-layer circulating incense stick high-efficiency energy-saving drying box according to claim 1, characterized in that: The rotating shaft (a) and the connecting plate (c) are arranged on both sides of the incense stick placing rack (8), one end of the connecting plate (c) is rotatably connected with the rotating shaft (a), and the other end is fixedly installed on the corresponding conveying chain (6).

4. The full-automatic multi-layer circulating incense stick high-efficiency energy-saving drying box according to claim 3, characterized in that: Rails are arranged at both sides of the upper drying channel (4) and both sides of the lower drying channel (5), the conveying chains (6) are arranged on the rails at both sides of the upper drying channel (4) in the installation position of the upper drying channel (4), and the conveying chains (6) are arranged on the rails at both sides of the lower drying channel (5) in the installation position of the lower drying channel (5).

5. The fully automatic multi-layer circulating incense stick high-efficiency energy-saving drying box according to claim 1, characterized in that: The bottom of the sieve plate (82) is provided with a partition support edge (823), and two adjacent sieve plates (82) are separated by the partition support edge (823) to form a gap for gas convection.

6. The fully automatic multi-layer circulating incense stick high-efficiency energy-saving drying box according to claim 1, characterized in that: The middle part of the side frame plate (813) is provided with a shaft hole for mounting the rotating shaft (a), and the outer frame (81) is rotatably connected to the rotating shaft (a).

7. The full-automatic multi-layer circulating incense stick high-efficiency energy-saving drying box according to claim 6, characterized in that: The distance from the rotating shaft (a) to the top frame plate (811) is smaller than the distance from the rotating shaft (a) to the bottom frame plate (812), or / and the lower end of the side frame plate (813) is provided with a counterweight.

8. The fully automatic multi-layer circulating incense stick high-efficiency energy-saving drying box according to claim 1, characterized in that: The incense stick loading port (11) is arranged at the front end of the oven body (1), and a material sensing device is arranged at the incense stick loading port (11). The oven body (1) is further provided with an industrial control box (10) connected with the material sensing device (13) and a driving device circuit. When the material sensing device (13) senses that the sieve plate (82) is full of incense sticks, it sends information to the industrial control box (10). The industrial control box (10) sends a command to the driving device to make the conveying chain (6) drive the incense stick placing rack (8) to move up or down by one layer of sieve plate (8). Alternatively, the front end of the oven body (1) is further provided with a limiting structure for limiting the insertion depth of the incense stick, which is used to prevent the incense stick placing rack from tilting due to the incense stick being inserted too far forward or too far backward.

9. The fully automatic multi-layer circulating incense stick high-efficiency energy-saving drying box according to claim 1, characterized in that: The bottom plate of the lower drying channel (5) is provided with a blocking piece (k) near the front end outlet for realizing the unloading of the incense stick placing rack (8). During the movement of the incense stick placing rack (8) to the outlet, the blocking piece (k) can block the bottom of the incense stick placing rack (8) to make the incense stick placing rack (8) tilt forward to realize the unloading of the incense stick placing rack (8).

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