Conveyor type drying device and conveyor type drying method

Abstract

A conveying type drying device (1) forms an upper conveying surface (S1) and a lower conveying surface (S2) by making a plurality of plates (30) supported by a supporting shaft (21) rotatably move with the circulating endless chain, thereby conveying and drying objects, wherein a stage is set for raising the plates (30) in a state of being suspended from the supporting shaft (21), so that the objects to be dried attached to the plates (30) fall onto the lower conveying surface (S1).

Description

Technical Field

[0001] The present invention relates to a conveyor-type drying device for drying an object to be dried while conveying the object, and a conveyor-type drying method using the conveyor-type drying device. Background Art

[0002] The applicant has proposed a device for drying the object to be dried while conveying it using a conveyor with a conveying surface formed by a plurality of plates (see patent document 1). In the device, a pair of endless chains are respectively wound around a pair of sprockets separated from each other in the horizontal direction and circulate around the pair of sprockets. A plurality of plates are located between the pair of endless chains, and are rotatably supported by the two endless chains by a support shaft parallel to the width direction, and move with the movement of the endless chains. When the sprocket that rotates the endless chain from top to bottom is used as the first sprocket, and the sprocket that rotates the endless chain from bottom to top is used as the second sprocket, in the section where the chain moves from the second sprocket to the first sprocket in the horizontal direction, the plate is kept horizontal by the upper guide rail, and the upper surface of the plate constitutes the upper conveying surface. The object to be dried is supplied to the upper conveying surface from above, and is conveyed for drying.

[0003] When the plate close to the first sprocket is separated from the upper rail, the plate rotates downward around the support shaft by its own weight, and the dried material falls. The plate circulating around the first sprocket in a state suspended from the support shaft is guided to the lower rail and rotates upward around the support shaft. In the section where the endless chain moves horizontally from the first sprocket to the second sprocket, the plate is kept horizontal by the lower rail, and the upper surface of the plate constitutes the lower conveying surface.

[0004] The dried material that falls as the plate near the first sprocket rotates downward is placed on the lower conveying surface and is further dried while being conveyed. When the plate near the second sprocket detaches from the lower guide rail, the plate rotates downward around the support shaft by its own weight, and the dried material falls outside the device. The plate that circulates around the second sprocket while suspended from the support shaft is guided to the upper guide rail and rotates upward around the support shaft.

[0005] According to the apparatus of Patent Document 1 constructed in this way, if the object to be dried is supplied to the upper conveying surface, and the object to be dried is dried while being conveyed by both the upper conveying surface and the lower conveying surface, and the dried object to be dried that falls due to the rotation of the plate close to the second sprocket is recovered, the drying process can be continuously performed.

[0006] However, in the device of Patent Document 1, the dried object conveyed by the upper conveying surface and approaching the first sprocket wheel has not been fully dried. Therefore, there is a case where the dried object adheres to the plate and does not fall when the plate approaching the first sprocket wheel rotates downward. The plate with the dried object attached circulates around the first sprocket wheel. When the dried object falls during this process, the horizontal plate that should receive the dried object is not below, so the undried dried object falls onto the installation surface of the device. Therefore, there is a problem that the drying process becomes insufficient and the dried object cannot be fully recovered.

[0007] Prior art literature

[0008] Patent Literature

[0009] Patent Document 1: International Publication No. 2016 / 046928 Summary of the invention

[0010] Problems to be solved by the invention

[0011] Therefore, in view of the above situation, the present invention aims to provide a conveyor type drying device and a conveyor type drying method using the conveyor type drying device, wherein the conveyor type drying device dries while conveying the dried object, can fully perform the drying process, and can reduce the dried object that cannot be recovered.

[0012] Means of solving problems

[0013] In order to solve the above-mentioned problems, the conveyor type drying device according to the present invention is as follows: "A conveyor type drying device, which dries the object to be dried while conveying it, wherein the conveyor type drying device has:

[0014] A pair of endless chains;

[0015] a plurality of pairs of sprockets, a pair of the annular sprockets being respectively wound around the plurality of pairs of sprockets; and

[0016] a plurality of plates, the plurality of plates being located between the pair of endless chains and being respectively mounted on the two endless chains so as to be rotatable about supporting shafts parallel to the width direction, thereby moving along with the movement of the endless chains;

[0017] The plurality of pairs of sprockets include a pair of first sprockets, a pair of second sprockets, a pair of third sprockets, and a pair of fourth sprockets, and the pair of endless chains are respectively wound around the pair of first sprockets, the pair of second sprockets, the pair of third sprockets, and the pair of fourth sprockets in sequence and rotate in conjunction with each other.

[0018] The first sprocket and the second sprocket are located at the same height, so that the endless chain rotates from top to bottom, so that the endless chain moves horizontally toward the second sprocket, and,

[0019] The second sprocket causes the endless chain conveyed from the first sprocket to rotate from bottom to top.

[0020] The lower end of the third sprocket is at the same height as the upper end of the second sprocket, and the third sprocket moves the endless chain horizontally between the third sprocket and the second sprocket, and rotates the endless chain from bottom to top.

[0021] The fourth sprocket is located above the first sprocket, and after the endless chain sent from the third sprocket is raised, the endless chain is rotated from top to bottom and sent to the first sprocket.

[0022] The plate is supported by the upper rail while moving from the second sprocket to the third sprocket to form an upper conveying surface on which the object to be dried is placed in a horizontal state.

[0023] When the plate is sent from the third sprocket to the fourth sprocket, it rotates downward around the support shaft by its own weight, rises while being suspended from the support shaft, circulates around the fourth sprocket, and is sent to the first sprocket.

[0024] When the plate is sent from the first sprocket to the second sprocket, it is guided to the lower guide rail and rotates upward around the support axis.

[0025] The plate is supported by the lower guide rail while moving toward the second sprocket to form a lower conveying surface on which the object to be dried is placed in a horizontal state.

[0026] When the endless chain is rotated from bottom to top by the second sprocket, the plate rotates downward around the support shaft by its own weight, and is guided to the upper guide rail while circulating around the second sprocket and rotates upward around the support shaft.

[0027] The "object to be dried" refers to an object that does not cause a problem with falling during the drying process, and examples thereof include animal manure, compost, sludge, and food waste.

[0028] In the device of patent document 1, the sprockets around which a pair of endless chains are respectively wound are only the first sprocket and the second sprocket. In contrast, in the present structure, the endless chain is also wound around the third sprocket and the fourth sprocket and circulates around them. The lower end of the third sprocket is at the same height as the upper end of the second sprocket, and the fourth sprocket is located above the first sprocket. Therefore, the plate that rotates downward around the support shaft when being sent from the third sprocket to the fourth sprocket rises toward the fourth sprocket in a state suspended from the support shaft. In this way, since the plate is in a stage of rising while maintaining the suspended state before circulating around the fourth sprocket, during this period, the dried object attached to the plate becomes easy to fall off.

[0029] According to the conveying drying device of the present invention, in addition to the above structure, it can also be:

[0030] "It also has a scraping device, which has: a long rod-shaped rotating shaft, which rotates facing the plate that rises from the third sprocket to the fourth sprocket in a state of being suspended from the supporting shaft; and a plurality of scraping rods, which extend from the rotating shaft in a direction orthogonal to the rotation axis."

[0031] The conveyor drying device of this structure is equipped with a scraping device, which has a rotating shaft and a plurality of scraping rods. The rotating shaft rotates facing the plate (hereinafter sometimes referred to as "rising plate") that rises from the third sprocket to the fourth sprocket in a state suspended from the support shaft. In addition, the plurality of scraping rods extend from the rotating shaft to a direction orthogonal to the rotating axis. Therefore, since the plurality of scraping rods rotate together with the rotating shaft, even if the dried material adheres to the rising plate, the dried material can be scraped off by the scraping rods.

[0032] According to the conveying drying device of the present invention, in addition to the above structure, it can also be:

[0033] “The rotating shaft rotates driven by the third sprocket.”

[0034] Since the rotating shaft rotates driven by the third sprocket, the rotating shaft can be rotated by the mechanism that drives the rotation of the endless chain. Therefore, there is an advantage that there is no need to add a dedicated power for rotating the scraping rod.

[0035] Here, as a structure for causing the rotating shaft to "rotate driven by the third sprocket", a structure for causing the rotating shaft to rotate integrally with a driven rotating body to which the rotation of the third sprocket is transmitted can be exemplified. The driven rotating body in this case can be exemplified by a sprocket or pulley to which the rotation of the third sprocket is transmitted via a chain or a belt, or a gear meshing with a gear that rotates integrally with the third sprocket.

[0036] In addition, as a structure for causing the rotating shaft to "rotate driven by the third sprocket", a structure for transmitting the rotation of the third sprocket to the rotating shaft via a plurality of driven rotating bodies may also be used. In this case, the plurality of driven rotating bodies may be a combination of a plurality of gears, a combination of a plurality of sprockets or pulleys, or a combination of a gear and a sprocket or pulley. In this way, by transmitting the rotation of the third sprocket to the rotating shaft via a plurality of driven rotating bodies, the positional relationship between the third sprocket and the rotating shaft, the rotation direction of the rotating shaft, and the rotation speed of the rotating shaft can be changed.

[0037] Secondly, the conveying drying method according to the present invention is as follows:

[0038] “The conveyor drying method is a conveyor drying method performed using the above-mentioned conveyor drying device,

[0039] supplying the dried objects onto the plurality of plates forming the upper conveying surface,

[0040] When the plates are fed from the third sprocket to the fourth sprocket, the dried objects are placed on the plurality of plates forming the lower conveying surface by causing the dried objects to fall from the plates rotating downward about the support shaft.

[0041] By raising the plate in a state of being suspended from the support shaft toward the fourth sprocket, the dried objects that have not fallen down are dropped, and

[0042] The scraping bar rotates with the rotation of the rotating shaft to scrape off the dried matter adhering to the plate ascending toward the fourth sprocket in a state of being suspended from the supporting shaft.

[0043] The method is a conveyor drying method using a conveyor drying device equipped with a scraping device. By setting a stage in which the plate is raised in a suspended state, even if the dried object is attached, it can be easily dropped from the plate. Since the attached dried object is scraped off by the rotation of the scraping rod, the dried object can be more reliably dropped onto the plate forming the lower conveying surface. As a result, since the dried object falling onto the installation surface of the device in an undried state can be reduced, almost all of the dried object supplied to the upper conveying surface can be dried, and the dried object can be dropped from the lower conveying surface and recovered.

[0044] Effects of the Invention

[0045] As described above, according to the present invention, a conveyor type drying device and a conveyor type drying method using the conveyor type drying device can be provided, wherein the conveyor type drying device dries while conveying the dried object, can fully perform drying treatment, and can reduce the dried object that cannot be recovered. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural diagram of a conveyor-type drying device as one embodiment of the present invention.

[0047] Figure 2 yes Figure 1 An enlarged view of the main parts of the conveyor drying device.

[0048] Figure 3 yes Figure 1 A three-dimensional diagram of the main parts of a conveyor drying device.

[0049] Figure 4 yes Figure 3 A magnified view of the A range.

[0050] Figure 5 (a) and (b) are Figure 1 An explanatory diagram of the operation of the scraping device in the conveying drying device.

[0051] Figure 6 (a) Yes Figure 1 (b) is a stereoscopic view of a scraping device of a conveying drying device, and (b) is a stereoscopic view of a scraping device of a modified example. DETAILED DESCRIPTION

[0052] Hereinafter, a conveyor type drying device 1 as one embodiment of the present invention will be described with reference to the drawings. Here, an example is given of a case where the present invention is applied to a conveyor type drying device that dries chicken manure discharged daily in large quantities from a chicken house while conveying the chicken manure.

[0053] The conveyor drying device 1 of this embodiment conveys chicken manure containing water as the object to be dried. Air is supplied to the space where the conveyor drying device 1 is installed by a ventilation device. The object to be dried is dried by the circulation of air while being conveyed. For example, the conveyor drying device 1 is arranged in a building adjacent to a large chicken house where a large number of chickens are raised in multi-stage cages. The air heated by the body temperature of the chickens in the chicken house is supplied to the space where the conveyor drying device 1 is installed while being discharged from the chicken house by an exhaust fan.

[0054] The conveyor type drying device 1 is equipped with: a pair of endless chains; a plurality of pairs of sprockets around which the pair of endless chains are respectively wound; and a plurality of plates 30 that move as the pair of endless chains circulate.

[0055] The conveyor type drying device 1 is equipped with a pair of first sprockets 11, a pair of second sprockets 12, a pair of third sprockets 13, and a pair of fourth sprockets 14 as the plurality of sprockets. The housing of the conveyor type drying device 1 has two pairs of side walls, and the first sprocket 11, the second sprocket 12, the third sprocket 13, and the fourth sprocket 14 are rotatably supported at the same height on one pair of opposite side walls 90 in a manner facing the paired counterparts.

[0056] The first sprocket 11 and the second sprocket 12 have the same diameter, the same tooth pitch, and are located at the same height. The third sprocket 13 has the same tooth pitch as the first sprocket 11 and the second sprocket 12, but has a smaller diameter. The third sprocket 13 is disposed between the first sprocket 11 and the second sprocket 12 and is close to the first sprocket 11. The height of the lower end of the third sprocket 13 is equal to the height of the upper ends of the first sprocket 11 and the second sprocket 12.

[0057] The fourth sprocket 14 has the same diameter and the same tooth pitch as the first sprocket 11 and the second sprocket 12. The fourth sprocket 14 is located above the first sprocket 11, but is slightly closer to the third sprocket 13 than directly above the first sprocket 11. A line extending in the vertical direction from the end of the fourth sprocket 14 on the third sprocket 13 side is substantially consistent with a line extending in the vertical direction from the end of the third sprocket 13 on the fourth sprocket 14 side.

[0058] The endless chain is wound around the plurality of sprockets arranged in the order of the first sprocket 11, the second sprocket 12, the third sprocket 13, and the fourth sprocket 14. The endless chain rotates from top to bottom along the first sprocket 11, from bottom to top along the second sprocket 12, from bottom to top along the third sprocket 13, and from top to bottom along the fourth sprocket 14.

[0059] A motor 95 is provided on the top surface 91 of the housing to drive the rotation shaft 14a of a pair of fourth sprockets 14 to rotate. The endless chain 72 is wound around a sprocket 95p that rotates integrally with the output shaft of the motor 95 and a sprocket 14p that rotates integrally with the rotation shaft 14a of the fourth sprocket 14. Thus, the rotation shaft 14a of the fourth sprocket 14 rotates by the drive of the motor 95. In addition, although omitted in the figure, a mechanism similar to the above-mentioned mechanism that drives the rotation of the fourth sprocket 14 is also provided in the second sprocket 12, and the rotations of the two are synchronized. Thus, when the rotation drive mechanisms of the two are operated, the second sprocket 12 and the fourth sprocket 14 rotate in the same direction at the same speed, and the pair of endless chains circulate around the third sprocket 13 and the first sprocket 11 while rotating them.

[0060] The endless chain is formed by connecting a plurality of link pairs consisting of two parallel link plates 22 connected rotatably by connecting pins 23. The connecting pins 23 insert the free roller 25 between the two link plates 22, and the free roller 25 rotates freely around the connecting pins 23. In addition, in each of the pair of endless chains, the connecting pins 23 extend beyond the inner link plate 22 at a certain interval. The plurality of plates 30 are connected rotatably from both sides by the connecting pins 23 extending inward from each endless chain while being located between the pair of endless chains. Therefore, the axis of the connecting pins 23 connecting the plates 30 at a certain interval among the connecting pins 23 is equivalent to the support shaft 21 of the present invention.

[0061] Each plate 30 has a plate body 31 with a plurality of small holes (not shown) formed on a rectangular flat plate, and a side surface 32 extending from a pair of sides in the width direction in the plate body 31 at right angles to one direction. The connecting pin 23 having the support shaft 21 as the axis is inserted through the side surface 32 and fixed. The guide roller 40 is rotatably mounted on the side surface 32 by the rotating shaft 42 at a position separated from the support shaft 21. The guide roller 40 mounted on the plate 30 rotates on the guide rail together with the free roller 25 assembled on the endless chain.

[0062] The guide rails include a pair of upper guide rails 81 and a pair of lower guide rails 82. When the plate 30 moves from the second sprocket 12 to the third sprocket 13, the pair of upper guide rails 81 guide the rotation of the guide roller 40 and the free roller 25. When the plate 30 moves from the first sprocket 11 to the second sprocket 12, the pair of lower guide rails 82 guide the rotation of the guide roller 40 and the free roller 25. The upper guide rails 81 and the lower guide rails 82 are respectively installed on a pair of side walls 90 of the housing so as to extend in the horizontal direction.

[0063] The upper rail 81 extends from the vicinity of the upper end of the second sprocket 12 to the vicinity of the lower end of the third sprocket 13 at a height slightly lower than the upper end of the second sprocket 12 and the lower end of the third sprocket 13. The lower rail 82 extends from the vicinity of the lower end of the first sprocket 11 to the second sprocket 12 at a height slightly lower than the lower ends of the first sprocket 11 and the second sprocket 12. A gap equal to or greater than the length of one plate 30 in the traveling direction is provided between the end of the lower rail 82 and the second sprocket 12.

[0064] In addition, a guide surface 83 curved in an arc shape along the outer circumference of the first sprocket 11 is provided radially outward of the first sprocket 11 and slightly separated from the first sprocket 11, and the lower end of the guide surface 83 reaches the lower guide rail 82. The diameter of the arc of the guide surface 83 is set to be slightly larger than the diameter of the first sprocket 11. In addition, an arc-shaped guide surface 84 is provided radially inward of the second sprocket 12 and slightly separated from the second sprocket 12. The diameter of the arc of the guide surface 84 is set to be slightly smaller than the diameter of the second sprocket 12. And the upper end of the guide surface 84 reaches the upper guide rail 81.

[0065] Furthermore, a guide surface 85 is vertically provided from the end of the third sprocket 13 slightly below the fourth sprocket 14 side to the end of the fourth sprocket 14 slightly below the third sprocket 13 side. The guide surface 85 is a surface that the roller 40 of the plate 30 sent out from the third sprocket 13 and rising toward the fourth sprocket 14 in a suspended state follows.

[0066] In addition to the above-mentioned structure, the conveying drying device 1 of this embodiment is also equipped with a scraping device 50. The scraping device 50 has a rotating shaft 50a that rotates driven by the third sprocket 13, and a plurality of scraping rods 51. The rotating shaft 50a is in the shape of a long rod, and its two ends are rotatably mounted on a pair of side wall portions 90. The two ends of the rotating shaft 50a pass through the side wall 90, and a first driven rotating body that rotates coaxially as a whole is provided at each end. On the other hand, the two ends of the rotating shaft 13a of the third sprocket 13 also pass through the side wall 90, and a sprocket 13p that rotates coaxially as a whole is provided at each end. On each of the side walls 90, between the sprocket 13p and the first driven rotating body, a second driven rotating body is rotatably mounted on the side wall 90. In addition, the rotation of the rotating shaft 13a is transmitted to the first driven rotating body via the second driven rotating body. Here, the second driven rotating body is constituted by the sprocket 60p and the spur gear 60g which rotate coaxially and integrally, and the spur gear 50g which meshes with the spur gear 60g is the first driven rotating body.

[0067] By such a configuration, when the rotating shaft 13a of the third sprocket 13 rotates, the rotation of the sprocket 13p that rotates integrally with the rotating shaft 13a is transmitted to the sprocket 60p via the endless chain 71. As a result, the spur gear 60g that rotates integrally with the sprocket 60p rotates in the same direction as the rotating shaft 13a, and the spur gear 50g that meshes with the spur gear 60g rotates in the opposite direction. As a result, the rotating shaft 50a that rotates integrally with the spur gear 50g rotates in the opposite direction to the rotating shaft 13a. In addition, by setting the diameter of the sprocket 60p to be smaller than the diameter of the sprocket 13p, the number of teeth of the spur gear 50g is set to be less than the number of teeth of the spur gear 60g, thereby, the rotation speed of the rotating shaft 50a is increased compared with the rotation speed of the third sprocket 13. In this way, by transmitting the rotation of the rotating shaft 13a to the rotating shaft 50a via a plurality of driven rotating bodies, the positional relationship between the rotating shaft 13a and the rotating shaft 50a, the rotation direction of the rotating shaft 50a, and the rotation speed of the rotating shaft 50a can be adjusted. The position of the rotating shaft 50a is set to face the guide surface 85 above the third sprocket 13.

[0068] On the rotating shaft 50a, a plurality of scraping rods 51 are installed in a direction orthogonal to the rotating shaft. The length of the scraping rod 51 is set so that when the front end of the scraping rod 51 is closest to the guide surface 85 due to the rotation of the rotating shaft 50a, the distance between the scraping rod 51 and the guide surface 85 is slightly larger than the thickness of the plate 30.

[0069] In addition, a collision plate 88 is supported by a support rod (not shown) mounted on the side wall 90 of the housing in the space below the third sprocket 13. The collision plate 88 is positioned just below the support shaft 21 at the moment when the guide roller 40 of the plate 30 sent from the third sprocket 13 to the fourth sprocket 14 is separated from the end of the upper guide rail 81.

[0070] With the above-mentioned structure, in the conveying drying device 1 of the present embodiment, a conveying surface is formed by a plurality of plates 30. Since each plate 30 is connected to the endless chain by the support shaft 21, it moves along with the movement of the endless chain that is wound around the first sprocket 11 to the fourth sprocket 14 and circulates. The lower ends of the first sprocket 11 and the second sprocket 12 are located at the same height, and the lower end of the third sprocket 13 is located at the same height as the upper end of the second sprocket 12. Therefore, the endless chain rotating from top to bottom at the first sprocket 11 moves horizontally toward the lower end of the second sprocket 12 (referred to as "downward movement"), and moves horizontally toward the third sprocket 13 after rotating from bottom to top at the second sprocket 12 (referred to as "upward movement").

[0071] The guide rollers 40 rotatably mounted on the two side surfaces 32 of each plate 30 about the rotation axis 42 rotate on the upper rail 81 as the plate 30 moves upward, and rotate on the lower rail 82 as the plate 30 moves downward. The heights of the upper rail 81 and the lower rail 82 are set in relation to the height of the support shaft 21 connected to the endless chain so that the plate 30 becomes horizontal while the guide rollers 40 rotate on the rails. In this embodiment, the free rollers 25 of the endless chain also rotate on the upper rail 81 and the lower rail 82.

[0072] In addition, the support shaft 21 connecting the plate 30 to the endless chain moving upward is located in front of the rotation shaft 42 of the guide roller 40. Thus, the plate 30 is pulled and moved by the endless chain moving upward. And, the upper conveying surface S1 is formed by a plurality of plates 30 moving horizontally along the upper guide rail 81. By supplying the dried material to the upper conveying surface S1 using a supply device such as a conveyor belt or a scoop, the dried material can be placed on the upper conveying surface S1 for conveyance.

[0073] When the plate 30 moving upward reaches the third sprocket 13, the third sprocket 13 that rotates the endless chain from bottom to top changes the direction of the plate to the upper direction and sends it to the fourth sprocket 14. When the guide roller 40 is separated from the end of the upper guide rail 81, the plate 30 rotates downward around the support shaft 21 by its own weight. The dried objects previously placed on the plate 30 fall down due to the rotation of the plate 30. When the plate 30 rotates downward, it collides with the collision plate 88, so the dried objects attached to the plate 30 can be shaken off by the impact.

[0074] The plate 30 supported by the endless chain in a state suspended from the support shaft 21 rises toward the fourth sprocket 14. At this time, the plate 30 is guided to rise in the vertical direction by the contact between the roller 40 and the guide surface 85. Thus, by having a stage in which the plate 30 rises in the vertical direction in a state suspended, even if the dried object adheres to the plate 30, it is easy to fall off at this stage.

[0075] Since the rotating shaft 50a faces the guide surface 85, the surface forming the upper conveying surface S1 in the ascending plate 30 faces the rotating shaft 50a. Therefore, even if the dried object is attached to the plate 30, the dried object is scraped off by the scraping rod 51 that rotates along with the rotation of the rotating shaft 50a. In particular, since the rotation direction of the rotating shaft 50a is opposite to the rotation direction of the third sprocket 13, the scraping rod 51 rotates downward relative to the ascending plate 30. Therefore, by interfering with the scraping rod 51, the dried object attached to the plate 30 can be more reliably dropped.

[0076] After that, the plate 30 circulates around the fourth sprocket 14 and is further conveyed to the first sprocket 11. And, it moves together with the endless chain rotating from top to bottom in the first sprocket 11, and is conveyed from the first sprocket 11 to the second sprocket 12. At this time, the plate 30 is gradually rotated upward around the support shaft 21 by being guided by the guide roller 40 on the guide surface 83 curved into an arc shape. When the guide roller 40 reaches the lower guide rail 82, the guide roller 40 is rotated on the lower guide rail 82, and the plate 30 moves in a horizontal state. At this time, the same surface as the surface forming the upper conveying surface S1 faces upward and forms the lower conveying surface S2. As described above, the dried object dropped at the stage when the plate 30 reaches the third sprocket 13 and is conveyed to the fourth sprocket 14 is placed on the lower conveying surface S2 and conveyed. In addition, when the endless chain moves downward, since the support shaft 21 is located at a position behind the rotating shaft 42, the plate 30 moves in a manner pushed by the endless chain.

[0077] When the plate 30 approaches the second sprocket 12 and the guide roller 40 is separated from the end of the lower guide rail 82, the plate 30 rotates around the support shaft 21 by its own weight. The dried material falls down by the rotation of the plate 30. The plate 30 suspended from the support shaft 21 moves upward together with the endless chain rotating from bottom to top at the second sprocket 12. At this time, the guide roller 40 is guided by the arc-shaped guide surface 84, and the plate 30 gradually rotates upward around the support shaft 21. When the guide roller 40 reaches the upper guide rail 81, the plate 30 is moved toward the third sprocket 13 while the guide roller 40 rotates on the upper guide rail 81, and the plate 30 becomes horizontal again, forming an upper conveying surface S1. The dried material is supplied to the upper conveying surface S1, and then the above-mentioned action is repeated.

[0078] In this way, in the conveying type drying device 1, the objects to be dried are dried while being conveyed by the upper conveying surface S1 and the lower conveying surface S2 formed by the plurality of plates 30 that move with the circulation of the endless sprocket. Since a plurality of small holes are formed in the plate body 31, air flows through the plates 30 and the objects to be dried placed on the plates 30. Thus, the conveyed objects to be dried can be dried efficiently.

[0079] Furthermore, the dried objects supplied to the upper conveying surface S1 in the initial stage of the upward movement of the endless chain are made to fall onto the lower conveying surface S2 at the end of the upward movement, and then are made to fall outside the device at the end of the downward movement, thereby enabling the supply, conveyance, drying and discharge of the dried objects to be continuously performed.

[0080] In addition, the dried object dropped from the plate 30 at the end of the downward movement is discharged out of the system by a delivery device such as a screw conveyor or a movable scraper. Alternatively, a plurality of conveyor drying devices 1 of the same structure may be stacked, and the object discharged from the conveyor drying device 1 of the upper stage may be supplied to the conveyor drying device 1 of the lower stage, and further dried while being conveyed.

[0081] As mentioned above, although the present invention has been described by way of preferred embodiments, the present invention is not limited to the above-mentioned embodiments, and various improvements and design changes can be made without departing from the gist of the present invention.

[0082] For example, in the above-mentioned embodiment, the scraping rod 51 is exemplified as a needle-shaped scraping device 50, but Figure 6 As shown in (b), a scraping device 50B may be provided which is mixed with a scraping rod 55 whose tip serves as a scraper. Alternatively, a scraping device may be provided which only has a scraping rod 55.

[0083] In the above embodiment, the case where the rotating shaft 50a rotates driven by the third sprocket 13 is described as an example, but a dedicated rotation drive mechanism for driving the rotation of the rotating shaft 50a may be provided. In this case, the rotation of the rotating shaft 50a does not need to be synchronized with the rotation of the first sprocket 11 to the fourth sprocket 14.

Claims

1. A conveyor type drying device, wherein the conveyor type drying device dries the object to be dried while conveying the object to be dried, characterized in that: The conveying drying device comprises: A pair of endless chains; A plurality of pairs of sprockets, a pair of the annular chains are respectively wound around the plurality of pairs of sprockets; as well as a plurality of plates, the plurality of plates being located between the pair of endless chains and being respectively mounted on the two endless chains so as to be rotatable about supporting shafts parallel to the width direction, thereby moving along with the movement of the endless chains; The plurality of pairs of sprockets include a pair of first sprockets, a pair of second sprockets, a pair of third sprockets, and a pair of fourth sprockets, and the pair of endless chains are respectively wound around the pair of first sprockets, the pair of second sprockets, the pair of third sprockets, and the pair of fourth sprockets in sequence and rotate in conjunction with each other. The first sprocket and the second sprocket are located at the same height, so that the endless chain rotates from top to bottom, so that the endless chain moves horizontally toward the second sprocket, and, The second sprocket causes the endless chain conveyed from the first sprocket to rotate from bottom to top. The lower end of the third sprocket is at the same height as the upper end of the second sprocket, and the third sprocket moves the endless chain horizontally between the third sprocket and the second sprocket, and rotates the endless chain from bottom to top. The fourth sprocket is located above the first sprocket, and after the endless chain sent from the third sprocket is raised, the endless chain is rotated from top to bottom and sent to the first sprocket. The plate is supported by the upper rail while moving from the second sprocket to the third sprocket to form an upper conveying surface on which the object to be dried is placed in a horizontal state. When the plate is sent from the third sprocket to the fourth sprocket, it rotates downward around the support shaft by its own weight, rises while being suspended from the support shaft, circulates around the fourth sprocket, and is sent to the first sprocket. When the plate is sent from the first sprocket to the second sprocket, it is guided to the lower guide rail and rotates upward around the support axis. The plate is supported by the lower guide rail while moving toward the second sprocket to form a lower conveying surface on which the object to be dried is placed in a horizontal state. When the endless chain is rotated from bottom to top by the second sprocket, the plate rotates downward around the support shaft by its own weight, and is guided to the upper guide rail while circulating around the second sprocket and rotates upward around the support shaft. The conveyor drying device further includes a scraping device, the scraping device including: a long rod-shaped rotating shaft, the rotating shaft rotates facing the plate that rises from the third sprocket to the fourth sprocket in a state suspended from the supporting shaft; and a plurality of scraping rods extending from the rotating shaft in a direction orthogonal to the rotation axis. The rotation of the third sprocket is transmitted to the rotating shaft via a plurality of driven rotating bodies that rotate slavedly from the third sprocket, whereby the rotating shaft rotates slavedly from the third sprocket, and the rotation direction of the rotating shaft is opposite to the rotation direction of the third sprocket, whereby the scraping rod rotates from top to bottom relative to the plate that rises via the third sprocket.

2. A conveyor drying method using the conveyor drying device according to claim 1, characterized in that: supplying the dried objects onto the plurality of plates forming the upper conveying surface, When the plates are fed from the third sprocket to the fourth sprocket, the dried objects are placed on the plurality of plates forming the lower conveying surface by causing the dried objects to fall from the plates rotating downward about the support shaft. By raising the plate in a state of being suspended from the support shaft toward the fourth sprocket, the dried objects that have not fallen down are dropped, and The scraping bar rotates with the rotation of the rotating shaft to scrape off the dried matter adhering to the plate ascending toward the fourth sprocket in a state of being suspended from the supporting shaft.

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