JP4883396B2 - A tensioning device in a circulating grain dryer. - Google Patents

Description

  The present invention relates to a circulation type grain dryer, and more particularly to a tensioning device for tensioning grain from the front side of the grain dryer.

  2. Description of the Related Art Conventionally, a circulation type grain dryer includes a dryer main body part in which a storage tank part, a drying part, and a grain collection carry-out part are stacked in order from the top, and the grains discharged from the grain collection carry-out part are stored in the storage tank part. A recirculation part comprising an elevator for recirculation is provided, and an open / close-type grain filling hopper is provided on one side surface of the dryer main body part in the cereal collection carry-out part. When such a circulation type grain dryer is installed, depending on the installation location, there may not be an open / close space for opening the grain insertion hopper on both sides of the circulation type grain dryer. In order to deal with the installation location, for example, as shown in Patent Document 1 and Patent Document 2, a tensioning device that allows tensioning work from the front side of the dryer main body is known. The tension device of patent document 1 is the axis | shaft of the horizontal conveyance screw which made the conveyance direction opposite to the axial end (front side of the said dryer main-body part) in the conveyance termination | terminus side of the main body lower part screw which comprises the said grain collection carry-out part. The end is fixedly connected, and the horizontal conveying screw rotates in synchronization with the rotation of the lower screw of the main body, so that the grain is stretched from a supply hopper provided on the conveying start end side of the horizontal conveying screw. It supplies to the conveyance start end side. On the other hand, the tensioning device of Patent Literature 2 is similar to the configuration of Patent Literature 1 and includes a dedicated motor for rotating the lateral conveying screw, and the conveying terminal end of the lateral conveying screw is connected to the dryer. A grain is stretched from the supply hopper provided in the lateral conveying screw by fixedly communicating with an opening provided in a machine wall on the front side of the grain collecting / unloading portion in the main body.

JP 7-280444 A JP-A-9-113137

By the way, each of the above-mentioned tensioning devices has the following problems. Each of the above-mentioned tensioning devices can be tensioned from the front side of the dryer main body, but the one in Patent Document 1 always has a tensioning device on the front side of the dryer main body. Since it protrudes, the installation space of this protrusion part was required extra. On the other hand, the thing of the said patent document 2 also requires an extra installation space similarly to the above, In addition to this, the motor for exclusive use which rotates the said horizontal conveyance screw is the main machine motor of the said dryer main-body part. The cost was increased because it was necessary separately.
Therefore, in view of the above problems, the present invention provides a tensioning device that can perform a tensioning operation from the front side of the dryer main body, does not require an extra installation space, and is inexpensive in configuration. It is an object to do.

In order to solve the above problem, according to claim 1,
A storage tank section for storing grains, a drying section for drying grains flowing down from the storage tank section, and a grain collection carry-out section for collecting the grains fed out from the drying section and discharging them from the machine with the lower screw of the main body are sequentially stacked. The main body of the dryer
An external transfer case that forms the transfer end side of the lower screw of the main body;
Grain recirculation unit comprising an elevator and an upper conveyance unit connected via the external conveyance case;
A grain supply port provided in the external transport case;
A connecting portion provided at a conveyance end portion in the lower screw shaft of the main body;
An external screw conveyor case having a grain discharge port communicating with the grain supply port on one end side and a supply hopper on the other end side, connected to the lower screw of the main body via the connecting portion, and a grain A tensioning device comprising an external conveying screw horizontally disposed in the external screw conveyor case with the conveying direction of
In the tensioning device of the circulation type grain dryer having
The conveying terminal end of the lower screw shaft of the main body protrudes outward from the outer conveying case and is provided with a main body connecting portion, while the tensioning device includes the grain discharge port which is freely attached to and detached from the grain supply port. A rotation transmission part that provides a tension coupling part that can be freely attached to and detached from the main body coupling part, and transmits the rotation of the lower screw of the main body to the conveyance start end of the external conveyance screw shaft via the tension coupling part And a technical means that a leg portion supporting the screw conveyor case was provided.

According to claim 2,
The rotation transmission unit includes a transmission shaft that is provided with the tension coupling portion on one end side and a transmission portion that transmits rotation to the conveyance start end portion of the external conveyance screw shaft on the other end side.
Technical measures were taken.

Furthermore, according to claim 3,
The technical means of providing the removable holding member which superposes | stacks the both opening part and hold | maintained the state which connected was provided in the peripheral part of the grain supply port and the grain discharge port.

Furthermore, according to claim 4,
The technical means of providing a leg height adjusting part on the leg part was taken.

  The tensioning device of the present invention is a tensioning device in which a grain discharge port provided in an external screw conveyor case is detachable with respect to a grain supply port provided in an external conveyance case and is freely detachably connected to a main body connection part. Since the rotation transmission part provided with the insertion coupling part transmits the rotation of the main body lower screw to the conveyance start end of the external conveyance screw shaft, the external conveyance screw is driven to rotate by the rotation of the main body lower screw, It can be separated from the dryer main body (the grain supply port and the main body connecting portion). This eliminates the need for a dedicated motor for rotationally driving the external conveying screw, thus reducing the cost of the apparatus, and since it can be separated from the grain dryer, it can be used by being mounted on other grain dryers. There is no need for extra installation space to always connect the tensioning device on the front side of the grain dryer, and when the harvest season is over or when the tensioning device is not in use, place it where it will not be in the way. Can be stored.

  1 shows a front perspective view of a circulating grain dryer 1 according to the present invention, FIG. 2 shows a rear perspective view of the circulating grain dryer 1, and FIG. FIG. 4 shows a cross-sectional side sectional view of the circulation type grain dryer 1.

  The circulation type grain dryer 1 according to the present invention includes a dryer main body 1a in which a storage tank unit 2, a drying unit 3 and a cereal collection unit 4 are sequentially stacked from the top, and is adjacent to the dryer main unit 1a. And a reflux part 5 for refluxing the grains.

  The storage tank portion 2 is configured by being surrounded by a four-sided machine wall and a ceiling machine wall.

  The drying unit 3 has a hot air wind tunnel 6 provided horizontally at the center, and a grain downflow layer 7 and an exhaust air wind tunnel 8 are sequentially provided on both sides of the hot air wind tunnel 6 (FIG. 3). The grain flow lower layer 7 is configured by facing a pair of ventilation plates 7a and 7b so as to have an arbitrary flow interval width. The hot air wind tunnel 6 is configured by being surrounded by the ventilation plates 7a on both sides and the falling plates 6a extending and intersecting with the upper portions of the ventilation plates 7a. Each of the exhaust wind tunnels 8 is configured by being surrounded by the ventilation plate 7b, a downflow plate 8a extending upward, a front / rear / side wall, and a grain collecting inclined plate (described later) 14. The left and right grain lower layers 7 are inclined so as to intersect at the lower end, and a feeding valve 9 is provided horizontally at the lower end. A hot air generator 10 is provided at one opening of the hot air wind tunnel 6. The hot air generator 10 is a kerosene combustion burner and includes a fuel tank (not shown). The hot air generated by the burner is supplied to the one opening. On the other hand, the other end of the hot air wind tunnel 6 is blocked by the machine wall. Each of the exhaust wind tunnels 8 is constituted by a machine wall having one side (front side) on which the hot air generator 10 is provided closed by a machine wall and the other side having a machine wall provided with a wind outlet 8b. A fan box 11 that surrounds each exhaust port 8b and is attached in close contact with the machine wall is configured outside each exhaust port 8b. The fan box 11 is provided with an exhaust fan 12. A valve motor 9a is connected to a shaft end on one side of the feeding valve 9 via a reduction gear or the like.

  The grain collection carry-out unit 4 is provided with a horizontal conveying screw (hereinafter referred to as “main body lower screw”) 13 at a position below the feeding valve 9 (FIGS. 3 and 4). On both sides of the main body lower screw 13, funnel-shaped grain collecting inclined plates (described later) 14 that are inclined toward the main body lower screw 13 are disposed. The main body lower screw 13 is driven to rotate in response to the output of the machine motor 13a. A side (front side) of the main body lower screw 13 on which the hot air generating device 10 is provided protrudes to the outside from the front side machine wall 15, and the periphery thereof is an external transport case (hereinafter referred to as “outlet”) 16. Surrounded. On one side wall of the outlet 16, there is provided a communication passage 17 that communicates with a conveyance start end side of an elevator 5a, which will be described later, so that grain can be supplied. The protrusion 13b of the lower main body screw 13 is configured with a blade plate 13d so that the grain is splashed to the elevator 5a side through the communication passage 17. The lower screw 13 of the main body rotates by disposing bearings 18 on each machine wall at both ends in the axial direction. Regarding the characteristic part in the present invention, the shaft end of the protruding portion 13b protrudes to the outside from the outlet 16 (bearing 18), and the main body connecting portion 19 is formed at the end portion. The main body connecting portion 19 is configured to be detachable from a tensioning device connecting portion 27a on the tensioning device side described later.

  The reflux unit 5 includes the elevator 5a and the upper conveying screw 5b. The elevator 5a is erected adjacent to the dryer main body 1a, spans an endless belt equipped with a plurality of buckets so that the endless belt can rotate up and down, and the communication passage 17 communicates with the lower conveyance start end side. ing. Further, an elevator motor (not shown) is provided at the upper part, and is used as a drive source for rotating the endless belt. By the elevator motor, the elevator 5a causes each bucket to pick up the grain supplied to the conveyance start end side and convey it to the upper part. The upper conveying screw 5b communicates with the conveying terminal portion of the elevator 5a, and scatters the cereal supplied to the supply start end side to the storage tank unit 2 through a scattering device and returns it. The upper conveying screw and the scattering device are also configured to rotate by receiving the rotation output of the elevator motor.

  Next, the tensioning device 20 which is a characteristic part of the present invention will be described. The tensioning device 20 includes a horizontally long and sealed external screw conveyor case 21 a having a conveyance unit 21 containing a laterally arranged external conveyance screw 21 b, and a supply hopper 22 at the upper part of the conveyance start side of the conveyance unit 21. In addition, a grain discharge port 23 is provided in the lower part on the conveyance end side. Legs 24c and 24d that support the supply hopper 22 and the like are formed at both ends of the transport unit 21, and a wheel 24a and a wheel are provided at the lower end of the leg 24c on the side where the supply hopper 22 is provided. A shaft 24 b is provided so that the operator can move the tensioning device 20. The circulation type grain dryer 1 is different in height from the ground to a later-described guide 16c (upper surface of the outlet 16) in a large size and a small size. Therefore, a leg height adjusting portion 32 is provided in the leg portion 24c. . The leg height adjusting part 32 is formed by dividing the leg part 24c into two parts vertically so that the lower leg part can be accommodated in the upper leg part and the height can be adjusted by sliding. The upper and lower legs can be adjusted in height by fixing the bolts and nuts 32b using the holes 32a at the positions where the legs 24 are required.

  The upper surface of the outlet 16 in the dryer main body 1a is provided with a grain supply port 16a communicating with the grain discharge port 23. When the grain supply port 16a connects the tensioning device 20, the opening / closing lid 16b Is removed and opened. A pair of guides 16c are provided at the peripheral edge of the grain supply port 16a, and the grain supply port 16a is opened and closed by fitting and sliding both ends of the opening / closing lid 16b on the guide 16c. Further, in the external screw conveyor case 21a, an insertion flange 23a that is inserted and slid into the guide 16c is provided in the vicinity of the peripheral edge portions on both sides of the grain discharge port 23, and the grain discharge port 23 and the grain supply port are provided. Communication with 16a can be maintained in close contact. Further, in the external screw conveyor case 21a, a stopper member 23b is provided in the vicinity of the peripheral portion of the grain discharge port 23 on the supply hopper 22 side, and the insertion flange 23a is inserted into the guide 16c and slid. At this time, when the grain discharge port 23 and the grain supply port 16a are superposed, the stopper member 23b comes into contact with the outlet 16 and stops. The holding member in the present invention is the guide 16c and the insertion flange 23a.

  A rotation transmission portion 26 for transmitting the rotation of the main body lower screw 13 to the external conveyance screw 21b is provided at a shaft end 21c of the external conveyance screw 21b in the conveyance portion 21 on the supply hopper 22 side. The rotation transmission unit 26 includes a transmission shaft 27 that is provided below the conveyance unit 21 and is connected to the main body connection unit 19 of the main body lower screw 13 to receive the rotation of the main body lower screw 13. The transmission shaft 27 is pivotally supported by a bearing (not shown) provided on the leg 24d and a bearing (not shown) provided on the vertical plate 27d provided at the lower end on the other side of the transport portion 21. Has been made rotatable. At one end (the grain discharge port 23 side) end of the transmission shaft 27, a tension connecting portion 27a that connects to the main body connecting portion 19 is provided. The tension connecting portion 27a and the main body connecting portion 19 are coupled to each other so that the rotational power of the main body lower screw 13 is transmitted to the shaft 27 and can be released. It is removable. The other end (the supply hopper 22 side) shaft end 27c and the shaft end 21c of the transmission shaft 27 are inserted by pulleys 25a and 27b, respectively, and a transmission portion 29 spanning them both by an endless belt 28. It is connected.

  A moisture meter 30 for automatically measuring grain moisture is provided on the side surface of the elevator 5a, and a control box 31 for controlling execution of a stretch operation, a drying operation, and the like is provided above the hot air generator 10. It is. The control box 31 is provided with an extension operation button and a drying operation button, and an execution program is incorporated so that various operations are executed by pressing each button. Since these are known techniques, detailed description thereof is omitted. In addition, a safety cover member 13c can be mounted around the main body connecting portion 19 so as not to harm the operator when the tensioning device 20 of the present invention is not mounted.

  Hereinafter, the operation of the present invention will be described.

  First, the tensioning device 20 of the present invention is attached to the transport protrusion 16 which is the front portion of the dryer main body 1a. Specifically, after the opening / closing lid 16b is removed and the grain supply port 16a is opened, the insertion flange 23a is inserted into the guide 16c, and the stopper member 23b is in contact with the conveyance protrusion (machine frame) 16 Slide it in and push it in. As a result, the grain supply port 16a on the dryer body 1a side and the grain discharge port 23 on the tensioning device 20 side are held in a close contact state in a superposed state. Further, with the attachment (polymerization) of the grain supply port 16a and the grain discharge port 23, the connection member 19 on the dryer main body 1a side and the tension connecting portion 27a of the tension device 20 are also connected. In addition, it is good to adjust the protrusion shape of each coupling so that the said connection member 19 and the tension connection part 27a may mesh smoothly before joining. The connection (mounting) operation of the tensioning device 20 to the dryer main body 1a is thus completed.

  Next, in order to start the tension operation of the ring grain dryer 1, the tension operation button of the control box 31 is pushed. When the extension operation button is pressed, the control unit in the control box 31 starts execution of the extension operation program, starts driving the machine motor 13a, and rotates the main body lower screw 13. In addition, the elevator motor is also started to be driven, and in response to this, the elevator 5a, the upper conveying screw 5b and the diffusion device also start to be driven.

  When the main body lower screw 13 is driven to rotate, this rotation is transmitted from the main body connecting portion 19 to the tension connecting portion 27a, and is further built in the conveying portion 21 via the transmission shaft 27 and the transmission portion 29. Is transmitted to the external conveying screw 21b, and the rotational driving of the external conveying screw 21b is started. After this state, the grain is put into the supply hopper 22 using an arbitrary conveying device (such as a spring type conveying device). Grain charged into the supply hopper 22 is transported by the external transport screw 21b and supplied from the grain discharge port 23 to the grain supply port 16a. The grain supplied to the grain supply port 16a is supplied to the conveying start end side of the elevator 5a via the communication passage 17 by the rotating action of the blade 13d in the main body lower screw 13. Next, the grain supplied to the conveying start end side of the elevator 5a is squeezed by each bucket and conveyed to the upper part, and is then stretched into the storage tank unit 2 via the upper conveying screw 5b and the scattering device.

  When the grain filling operation is finished in the storage tank unit 2, the stop button of the control box 31 is pushed, and then the drying operation button is pushed to start the drying operation. This drying operation is a known drying operation, and the description thereof is omitted here. When the tensioning operation is completed, the tensioning device 20 is disconnected from the outlet 16, and the grain supply port 16a is closed by the opening / closing lid 16b, and a safety cover 13c that hides the main body connecting portion 19 is attached.

  As described above, the tensioning device 20 of the present invention connects the grain discharge port 23 to the grain supply port 16a of the outlet 16 in the main body lower screw 13 of the annular grain dryer 1, and the external conveying screw 21b in the conveying unit 21. Is rotated by receiving the rotational power of the lower screw 13 of the main body by the rotation transmitting portion 26, so that a tensioning operation can be performed from the front side of the annular grain dryer without requiring a dedicated drive motor. In addition, the grain outlet 23 and the rotation transmission unit 26 in the tensioning device 20 are detachable from the ring grain dryer 1 side. Since the tensioning work can be performed by attaching to the cable, a space where the tensioning device 20 is always installed is not required. Further, the tensioning device 20 can be moved to a place where it does not get in the way and stored when the harvest season ends.

  In the above embodiment, an example in which the grain outlet 23b (the tensioning device side) and the grain supply port 16a (the ring grain dryer side) are directly polymerized has been shown. You may make it communicate between both using. Further, the opening of the supply hopper 22 may be extended and enlarged in the longitudinal direction of the transport unit 21.

Front perspective view of circulating grain dryer in the present invention Rear perspective view of the circulating grain dryer Vertical front sectional view of the circulation type grain dryer Vertical side sectional view of the circulation type grain dryer A perspective view of the tensioning device of the present invention (before mounting on a circulating grain dryer) A perspective view of the tensioning device of the present invention (after being mounted on a circulation type grain dryer) Single perspective view of the tensioning device of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Circulating grain dryer 1a Dryer main-body part 2 Reservoir tank part 3 Drying part 4 Grain carrying-out part 5 Reflux part 5a Elevator 5b Upper conveyance screw 6 Hot wind wind tunnel 6a Downflow board 7 Grain flow lower layer 7a Ventilation board 7b Ventilation board 8 Exhaust wind tunnel 8a Downflow plate 8b Exhaust port 9 Delivery valve 9a Valve motor 10 Hot air generator 11 Fan box 12 Exhaust fan 13 Main body lower screw 13a Machine motor 13b Protruding portion 13c Safety cover 13d Blade plate 14 Grain collecting plate 15 Front side machine wall 16 outlet (external transport case)
16a Grain supply port 16b Opening / closing lid 16c Guide 17 Communication passage 18 Bearing 19 Main body connecting portion 20 Tightening device 21 Conveying portion 21a Screw conveyor case 21b External conveying screw 21c Shaft end 22 Feeding hopper 23 Grain discharge port 23a Inserting flange 23b Stopper member 24a Wheel 24b Wheel shaft 24c Leg part 24d Leg part 25a Pulley 26 Rotation transmission part 27 Transmission shaft 27a Stretching connection part 27b Pulley 27c Shaft end 27d Vertical plate 28 Endless belt 29 Transmission part 30 Moisture meter 31 Control box 32 Leg height adjustment part

Claims (4)

A storage tank section for storing grains, a drying section for drying grains flowing down from the storage tank section, and a grain collection carry-out section for collecting the grains fed out from the drying section and discharging them from the machine with the lower screw of the main body are sequentially stacked. The main body of the dryer
An external transfer case that forms the transfer end side of the lower screw of the main body;
Grain recirculation unit comprising an elevator and an upper conveyance unit connected via the external conveyance case;
A grain supply port provided in the external transport case;
A connecting portion provided at a conveyance end portion in the lower screw shaft of the main body;
An external screw conveyor case having a grain discharge port communicating with the grain supply port on one end side and a supply hopper on the other end side, connected to the lower screw of the main body via the connecting portion, and a grain A tensioning device comprising an external conveying screw horizontally disposed in the external screw conveyor case with the conveying direction of
In the tensioning device of the circulation type grain dryer having
The conveying terminal end of the lower screw shaft of the main body protrudes outward from the outer conveying case and is provided with a main body connecting portion, while the tensioning device includes the grain discharge port which is freely attached to and detached from the grain supply port. A rotation transmission part that provides a tension coupling part that can be freely attached to and detached from the main body coupling part, and transmits the rotation of the lower screw of the main body to the conveyance start end of the external conveyance screw shaft via the tension coupling part And a leg portion for supporting the screw conveyor case.   The rotation transmission unit includes a transmission shaft provided with the tension coupling portion on one end side and a transmission portion on the other end side for transmitting a rotation to a conveyance start end portion of the external conveyance screw shaft. Item 2. A tensioning device for a circulation type grain dryer according to item 1.   The detachable holding member that holds the state in which the opening portions of the grain supply port and the grain discharge port are in communication with each other is provided at the peripheral edges of the grain supply port and the grain discharge port. Item 3. A tensioning device for a circulating grain dryer according to item 2. The tension device of the circulation type grain dryer according to any one of claims 1 to 3, wherein a leg height adjusting part is provided on the leg part.

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