JPS6310470Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is suitable for packing dried grains into paddy bags using a grain drying device, or transporting grains to a paddy warehouse or paddy tank using a thrower, etc. The present invention relates to a dust suction device for removing generated dust by suction during grain discharge in a grain drying device.

The grain drying equipment uses a bucket elevator-type grain lifting machine, a screw conveyor for loading grain, and a screw conveyor for discharging grain. Drying is carried out by supplying drying air while circulating the grain by taking it out from the outlet at the bottom of the grain tank and returning it into the grain tank from the top of the tank. A dust blower is installed to remove the large amount of dust generated by rubbing.

Therefore, this idea was developed to remove dust that is generated during the process of packing dried grains into paddy bags, or temporarily storing them in paddy warehouses or paddy tanks, or the dust that remains after being sucked out during drying. The present invention proposes a new means in which dust can be removed by suction using the dust suction blower of the grain drying device.

To explain the embodiment in more detail based on the drawings, in FIG. 1, reference numeral 1 denotes a frame body of a circulating grain drying device A, which is formed into a box shape. Reference numeral 2 denotes a conventionally known grain tank installed in the inner cavity of the machine frame body 1, and an air-permeable partition 2 such as a perforated plate is provided at the axial center of the inner cavity.
0 to form a wind trunk-shaped air guiding path 21. The air guiding path 21 communicates with a conventionally known hot air generating device 3 consisting of a burner and a fan on one side thereof, and guides the hot air (drying air) generated by the hot air generating device 3 into the grain tank 2 (arrow). It acts to feed. 4.5
These are a screw conveyor for loading grains and a screw conveyor for discharging grains, which are installed at the top and bottom of the grain tank 2. These screw conveyors 4 and 5 are conventionally known ones, which are composed of conveying troughs 40 and 50 and spiral blades 42 and 52 mounted in their inner cavities so as to rotate around rotating shafts 41 and 51. A plurality of discharge ports 43 are provided at the bottom of the conveyance gutter 40 of the screw conveyor 4 for loading in the conveyance direction (second direction).
Also, above the screw conveyor 5 for discharging grains, a feedout opening 53 provided above the screw conveyor 5 is opened and closed to allow the grains to be fed out. Rotary shutter 5 that controls the amount
4 is provided. 6 is a grain lifting machine that is installed vertically on one side of the machine frame body 1 (right side in Figure 2), and has a bucket (not shown) that rotates endlessly in the vertical direction.
It is made of a bucket elevator type installed in the grain lifting tower 60. The bottom of the grain lifting tower 60 is connected to the terminal end of the grain discharging screw conveyor 5 in the conveyance direction, and the upper part of the grain lifting tower 60 is connected to the screw conveyor 4 for tensioning. The starting end 4a in the conveying direction is connected and communicated with the starting end 4a, and when the starting end 4a is shut off by switching a switching shutter (not shown) provided at the starting end 4a, the grain provided in the grain lifting tower 60 is opened. The grain discharge port 61 opens,
The structure is such that the flow of grains sent up by the bucket is switched toward a grain discharge port 61. 7
is a place where grains move rapidly, especially grains that have been exposed to drying wind and are sent upward by the grain lifting machine 6.
Since a lot of dust is generated when the grains are taken over and conveyed at the starting end 4a of the screw conveyor 4 for grain loading, this dust suction blower is designed to suction and remove dust depending on the part.

The dust blower 7 includes a rotary impeller 73 in a casing 72 that includes a dust inlet 70 and a dust exhaust port 71, and the rotation of the rotary impeller 73 causes the dust suction air taken in from the dust inlet 70 to be discharged from the dust outlet 71. This is similar to a conventionally known structure, and is supported by a semi-cylindrical support member 74 attached to the outer surface of the upper part of the upper plate of the grain lifting tower 60. And this dust blower 7
is a pulley 75 provided on the rotating shaft of the rotary impeller 73.
However, the rotation of the motor M is transmitted by the belt through the motor pulley m together with the elevator pulley n and the screw conveyor pulley h. In addition to the dust suction blower 7 installed on the top of the grain lifting tower 60 as described above, there is also a type installed on the upper top plate of the machine frame main body 1, although not shown, and there is no problem. 8
is the conveying gutter 4 of the screw conveyor 4 for grain loading.
A flexible dust suction pipe for connecting and communicating the dust suction port 70 of the casing 72 of the dust suction chamber 44 formed at the upper part of the starting end 4a in the conveying direction of 0, and both ends thereof are configured as coupling rings 81 and 82. The dust suction port 70 and the connection port 45 of the dust suction chamber 44 are removably connected to each other. Note that this dust suction pipe 8 is
When discharging the grains after drying the grains, the dust suction pipe 8 must be removed from the connection port 45 of the dust suction chamber 44 and connected to the dust suction port 94 of the grain discharge pipe 9, which will be described later. It is preferable to form it in advance.
The dust suction pipe 8 shown in FIGS. 2 and 3 is shown in a short shape with the middle part omitted for ease of understanding, but in reality it is formed into a suitably long length as described above.

Therefore, in the grain drying apparatus A configured as described above, generally, after drying the grains to a desired moisture content, a connecting pipe for grain discharge is connected to the grain discharge port 61, The lower end of the tip on the opposite side can be placed in the opening of a paddy bag to bag grains, or the lower end of the connecting pipe can be connected to the hopper of the thrower and the grain can be stored through the thrower. However, the dust generated during bagging work or the work of transporting paddy to paddy warehouses or paddy tanks, etc., or the dust that remains without being completely removed by suction, scatters in all directions. In particular, there was a problem in that when filling paddy bags, the burden was placed directly on the worker.

Therefore, in this invention, when discharging grains, the grain tank 2
With the stoppage of grain circulation inside the grain tank 2, the generation of dust decreases and the dust suction effect weakens. The purpose of this system is to more effectively suck and remove dust generated during bagging operations or transport operations to paddy warehouses, paddy tanks, etc. 4 and 5 will be explained. Reference numeral 9 denotes a cylindrical or rectangular grain discharge pipe made of a thin metal plate or synthetic resin, the inner cavity of which is partitioned into two paths, a grain discharge passage 91 and a dust suction passage 92, by a partition plate 90. , and its connection port 9
A dust suction port 94 communicating with the dust suction path 92 is formed on the peripheral side near the dust suction passage 92 . In addition, the partition plate 90
The grain discharge passage 91 is installed horizontally so that its cross-sectional volume is considerably larger than that of the dust suction passage 92, and the end near the connection port 93 is bent toward the dust suction port 94 to connect the dust suction passage 94 and the dust suction passage. The passage 92 is the grain discharge passage 91.
It is preferable not to communicate with the Further, the dust suction port 94 is connected to the connection port 45 of the dust suction chamber 44.
Similarly, it is necessary to form the coupling ring 82 of the dust suction pipe 8 so that it can be connected detachably. 63 is a flexible connecting pipe for connecting and communicating the grain discharge port 61 of the grain lifting tower 60 and the connection port 93 of the grain discharge pipe 9 or the hopper H of the thrower S. W is a paddy bag, I is a discharge pipe with a curved pipe at the top, J is a paddy tank, K and L are auxiliary discharge pipes that extend the grain discharge pipe 9 as necessary, and the inner cavity is used for grain discharge. It is partitioned into the same two routes as the pipe 9.

In the dust suction device configured as described above, in order to discharge the grains from the grain tank 2 after drying, first,
The operation of the motor M is stopped, and the switching shutter located at the starting end 4a in the conveyance direction of the screw conveyor 4 for grain loading is switched to block the starting end 4a and to open the grain discharge port of the grain lifting tower 60. 61 is opened. Next, the dust suction pipe 8 is connected to the connection port 45 of the dust suction chamber 44.
and remove it from the dust suction port 94 of the grain discharge pipe 9.
When connected to the machine, the preparation for grain discharge is completed, and the motor M can be operated again. Then, the grains discharged from the grain discharge port 61 of the grain lifting tower 60 pass through the connecting pipe 63 (and the thrower S and the discharge tube I), and then reach the connection port 93 of the grain discharge pipe 9.
The grains are then discharged into a predetermined paddy bag W (or paddy tank J) through the grain discharge path 91 of the discharge pipe 9 (indicated by solid line arrows in FIGS. 4 and 5). At this time, the dust generated in the paddy bag W or the paddy tank J flows back through the dust suction path 92 of the grain discharge pipe 9 and is sucked (indicated by the two-dot chain arrow in FIGS. 4 and 5). ), the dust is discharged from the dust blower 7 to the outdoors through the dust suction port 94 and the dust suction pipe 8. Therefore, most of the dust generated at the grain discharge work site is sucked and removed by this grain discharge pipe 9.

As explained above, the dust suction device of this invention has an existing dust suction blower 7 installed at the dust suction port 94 of the grain discharge pipe 9.
Since it can be easily configured by simply connecting the dust suction pipes 8, it is very rational and the dust suction efficiency of the dust suction blower 7 can be made extremely high. In particular, this grain discharge pipe 9
is formed into two paths, the grain discharge path 91 and the dust suction path 92, so no fluid frictional resistance can occur between the grains discharged downward and the dust suctioned upward. It becomes possible to further improve the dust suction effect of the device. Moreover, since the dust suction port 94 of the grain discharge pipe 9 is located near the connection port 93, the dust suction pipe 8 can be relatively short. This eliminates the need to extend the dust suction pipe 8 to the tip end of the grain discharge pipe 9 to suck dust, and an auxiliary discharge pipe that extends the grain discharge pipe 9 depending on the installation situation of the grain drying device is eliminated. It is not affected by the overall length of the K, L, etc., and can always be handled with an appropriately fixed length of the dust suction pipe 8 in any installation situation, making it very easy to handle for the operator.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of a grain drying device implementing this invention, Fig. 2 is an enlarged cutaway front view of the main parts showing how the dust suction blower is attached to the grain lifting tower;
Fig. 3 is a perspective view of the same as above, Fig. 4 is a schematic explanatory diagram of the state in which the grains are packed into paddy bags, and Fig. 5 is a schematic explanatory diagram of the state in which the grains are sent to the paddy tank by the thrower. It is. Explanation of drawing symbols, A... Grain drying device, 1...
Machine frame body, 6...grain lifting machine, 7...dust blower,
8...dust suction pipe, 9...grain discharge pipe, 60...grain lifting tower, 61...grain discharge port as above, 63...connection pipe, 70...dust suction port of dust suction blower, 71...same as above dust outlet, 91...grain discharge path of grain discharge pipe,
92...Dust suction path as above, 93...Connection port as above,
94...Dust suction port as above, S...Thrower, I...
Same as above.

Claims (1)

[Scope of utility model registration request] In a grain drying device in which a dust suction blower having a dust suction port and a dust exhaust port is attached to the top of a grain lifting tower of a grain lifting machine installed in parallel on one side of the machine frame body or to the top plate of the machine frame body, The lumen of the grain discharge pipe that connects and communicates with the grain discharge port of the grain lifting tower through the connecting pipe or the thrower and its discharge tube is partitioned into two paths, a grain discharge path and a dust suction path. A dust suction port communicating with the dust suction path is formed on the peripheral side near the connection port of the grain discharge pipe, and the dust suction port is removably connected to the dust suction port of the dust suction blower via a dust suction pipe. A dust suction device for discharging grains in a grain drying device, characterized by: