JP2001253493A - Method and apparatus for removing object adhered to inner face of silo for grain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adhered object removing apparatus capable of mechanizing and safely carrying out the removing operation of adhered objects of grain or the like adhered to or accumulated in a silo. SOLUTION: A granular material tank 14 and a compressed air feed source 12, both being arranged outside a silo 100, are connected to an injection nozzle 40 through piping 51 and piping 55, respectively. A blast means 10 is provided in which a duct 41 formed to the injection nozzle 40 and a dust collector 30 arranged outside the silo 100 are connected to each other through piping 52 (52a, 52b, 52c). A suction means 20 for sucking and collecting grain stored in the silo 100 is provided outside the silo 100, and the grain collected by the suction means 20 is charged into the granular material tank 12 as injection granular materials. When compressed air is fed to the injection nozzle 40 under this condition, the injection granular materials are injected from the injection nozzle together with the compressed air. Further, dust, which floats in the silo 100 due to impacts caused when the injection granular materials are brought into collision with an inner wall of the silo 100, is sucked and collected by the dust collector 30 through the duct 41.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for removing deposits deposited or accumulated in a grain silo.
More specifically, the present invention relates to a method and an apparatus for removing grains by spraying grains stored in the silo as spray particles to the deposits on the inner wall of the silo.

[0002]

2. Description of the Related Art Food processing companies, livestock feed companies, etc. have grain silos that can store food and feed raw materials such as imported grains at port facilities and factory premises. It is stored in this silo.

The grains stored in these grain silos are solidified in the silos due to moisture contained in the grains, dew condensation in winter, etc., and adhere or deposit on the inner walls of the silos. Occupies 20% of the silo volume depending on the type of the silo. Therefore, for example, in a large silo with a diameter of 10 m and a height of about 30 m,
Approximately 100 tons or more of grain is deposited or deposited per silo, thus limiting the amount of grain that can be stored in the silo due to the deposited or deposited grain, resulting in extra expense in storing raw grain. .

[0004] As described above, in order to remove grains that have adhered or accumulated in the silo, a worker has conventionally been lowered by hanging a rope or the like from an opening formed in the upper wall of the silo, and the worker has to descend. Pickaxes and hoes were used to remove and remove grain that had adhered or accumulated on the silo inner wall.

[0005]

Some of the deposits that adhere to or accumulate on the inner wall of the silo are so strongly adhered that it is difficult to break them with a pickaxe or the like. Takes time. However, conventionally, there is no device for removing the deposits adhered or deposited on the inner wall of the silo.

[0006] When mechanically removing the grains attached or deposited on the inner wall of the silo, it is necessary to consider that the grains stored in the silo are used as raw materials for food and feed. During the removal operation, substances other than grains, such as metals and abrasives, should be avoided from remaining in the silos or being mixed into the grains stored in the silos.

[0007] Further, when removing grains that have adhered or accumulated on the inner wall of the silo, dust generated by crushing the stored grains and dust stored mixed with the grains soared, causing the explosion concentration in the silo to rise. If a dust cloud is generated, there is a risk of dust explosion.It is desirable that the work to remove the accumulated grain should be performed in a state where the dust does not float as much as possible. Even when a dust cloud is generated in the scale, it is preferable that the dust cloud hardly becomes an ignition source for the dust cloud.

[0008] An apparatus for removing grains adhered or deposited on the inner wall of the silo can be inserted into the silo through a manhole having a diameter of about 50 cm formed on the roof of the silo. There is a need.

There are various types of silos such as cylindrical ones and square cylindrical ones, and there are various types of silos made of metal, concrete and the like. It is necessary to support silos of these various shapes and materials.

[0010] Further, the silo to be treated is 30 m in height and 10 m in diameter as described above in the case of a large silo.
As described above, working in high places where workers enter silos as described above is dangerous, and working in silos, which is a closed space, can cause oxygen deficiency accidents and pests in grains. These operations can be performed from outside without workers entering the silo, because there is a risk of death or other accidents due to fumigation gas passing through the silo to exterminate etc. Is preferred.

Therefore, the present invention is capable of removing foreign substances such as grains adhered or deposited in the silo by mechanical means, and includes, in the silo inner wall or the grains stored in the silo, other than grains. It is an object of the present invention to provide a method and an apparatus for removing extraneous matter, in which there is no possibility that foreign matter is mixed in, and no dust cloud is generated during the removing operation and there is no possibility of dust explosion.

In addition, the present invention can perform such an operation for removing extraneous matter from outside without an operator entering the silo. An object of the present invention is to provide a method and an apparatus for removing deposits on a grain silo inner wall, which can remove deposits attached or deposited on the inner wall of the grain silo without fear of death or the like.

[0013]

In order to achieve the above object, a method and an apparatus for removing deposits on the inner wall of a grain silo according to the present invention include a silo 100 storing grain and having openings 101 and 102 in an upper wall. And a method and apparatus for removing deposits attached to the inner wall of the silo 100,
An injection nozzle 40 for injecting the injection granules with the compressed gas,
A blast unit 10 comprising a compressed air supply source 12 for supplying a compressed gas to the injection nozzle 40 and a granule tank 14 for supplying an injection particle to the injection nozzle 40 is provided, and the injection nozzle 40 of the blast unit 10 is provided. The silo 100
Pipes (granule introduction pipe 51, compressed air introduction pipe 55) inserted into the silo 100 through openings 101 and 102 formed in the upper wall of the silo 100.
, The compressed air supply source 12 and the granule tank 14 disposed outside the silo 100 are communicated with the spray nozzle 40, and the grains in the silo 100 are introduced into the granule tank 14 as spray granules. And the injection nozzle 4
It is characterized in that it is sprayed onto the deposits on the inner wall of the silo 100 through the zero.

At this time, at least the front end portion of the injection nozzle 40 is surrounded by an inner peripheral side shield 42 which opens in the direction of ejecting the granules, and an outer peripheral side shield 43 which opens in the direction of ejecting the granules. The inner peripheral side shield 42 is surrounded at a predetermined interval, and a space formed between the shields 42 and 43 is communicated with the dust collector 30 arranged outside the silo 100, and the shields 42 and 43 are formed by the dust collector 30. The dust inside the silo 100 can be collected outside the silo 100 by sucking the atmosphere inside the silo 100 through the space formed therebetween.

As means for recovering the grains, which are injected granules, introduced into the granule tank 14 from the silo 100, the grains are disposed outside the silo 100,
Suction means 20 for sucking and collecting the grains fed into the granule tank 14 through openings (grain collection pipes 54) inserted into the silo 100 from the openings 101 and 102 formed in the upper wall of the cylinder 00. Can also be provided.

A pipe 52 (52a, 52b, 52) communicating between the space between the shields 42 and 43 and the dust collector 30 is provided.
In c), a cyclone 36 for separating, classifying, and collecting the cereal grains sucked together with the dust from the dust may be provided.

Further, in the attached matter removing apparatus of the present invention which can carry out the attached matter removing operation without an operator entering the silo 100, a plurality of rod-like members are rotatably supported by a shaft. The formed joints 75, 76 or the connecting portions 6
And an arm 70 having a power source such as an explosion-proof motor for operating the joints 75 and 76 or the connecting portions 74 and 77, and an explosion-proof motor or the like provided on the arm 70. By driving the power source, joint 75,
76 or a remote control device 80 for operating the connecting portions 74 and 77, and the blast device 1 is attached to the arm portion 70.
The arm unit 70 is inserted into and suspended from the silo 100 through openings 101 and 102 formed in the upper wall of the silo 100 with the zero spray nozzle 40 attached thereto. The injection nozzle 40 can be made to be able to face a desired position on the inner wall of the silo 100 by operating the arm unit by the remote control device 80.

[0018]

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

The deposit removing apparatus of the present invention sprays grains, which are spray particles, together with the compressed gas to collide with the deposits on the inner wall of the silo 100, and impinges on the inner wall of the silo 100 due to the impact of the collision of the ejected particles. It is to remove the deposits such as attached or deposited grains, the deposit removal device of the present embodiment,
A suction means 20 for sucking the grain stored in the silo 100 out of the silo 100 and collecting the grain, and injecting the grain collected by the suction means 20 from the spray nozzle 40 as a spray granule, and spraying the spray granule Blast means 10 for collecting dust floating in the silo 100 by means of the blast means 10 in the silo 100
Operating means 60 for performing an operation of turning the target to a desired position on the inner wall of the silo.

[Suction means] In the present invention, the silo 100 is used.
The spray particles sprayed on the inner wall are soybeans, corn, grains such as kolyan stored in the silo 100,
As an example, in the case of soybeans and corns for essential oils, grains having a particle size of about 4 to 5 mm are used as spray particles. By using the grains stored in the silo 100 as the spray particles in this manner, even when using a grinder or the like to scrape off deposits or when using a blasting device as in the present invention. As in the case of using a metal shot or an abrasive to remove deposits,
It is possible to prevent foreign substances such as metal and abrasives from adhering to the inner wall, and to prevent foreign substances from being mixed into the storage.

The grains to be used as the spray particles are silos 10
The suction means 20 disposed on the upper wall of the
Silo 10 through opening 102 formed in the upper wall of
The cereal collection pipe 54 inserted into the cylinder 0 communicates with the cereal, and the cereal in the silo 100 is sucked through the cereal collection pipe 54 to be sucked and collected outside the silo 100.

The suction means 20 uses a fan rotated by a driving means such as a motor, for example, to make the inside of a collection tank formed therein a negative pressure, and to silo through a grain collection pipe 54 connected to the collection tank. In this embodiment, the grain stored in 100 is sucked.
A suction means 20 having a structure similar to a vacuum cleaner, having a vacuum pressure of 4.7-35.3 Mpa and an air flow of 250-660 m ³ / h is used.

In this embodiment, the suction means 20
Although a motor is used as a power source for the blast unit 10, the motor is rotated by electric power generated by a generator (not shown) together with an electric device such as a blower 31 provided in a dust collector 30 of the blast means 10 described later. If an AC power supply is available, the AC power supply may be directly connected to the AC power supply, or the suction means 20 may be driven by an engine instead of the motor.

The grain thus sucked up from the silo 100 by the suction means 20 is put into a granule tank 14 of the blast means 10 described later,
Nozzle 40 through a particle introduction pipe 51 communicating with the injection nozzle 40
And injected from the injection nozzle 40 together with the compressed air.

The suction means 20 can operate the suction means 20 continuously to continuously collect the grains introduced into the granule tank 14 described later during the operation of removing the deposits. In the case where the sprayed grains and the grains peeled off from the silo inner wall are configured to be recoverable, and the recovered grains are separated and classified from the dust and introduced into the granular tank 14 as the sprayed particles, , The suction means 2
0 is the particle tank 14 at the start of the adhering matter removal operation.
Any material can be used as long as it can suck and collect the cereal to be fed into the vessel.

[Blasting means] The blasting means 10
Is to inject the sprayed particles together with the compressed gas from the spray nozzle 40 to collide with the inner wall of the silo 100, and to suction and collect the dust floating due to the impact when the sprayed particles are sprayed, In the present embodiment, a so-called air type blast device using compressed air as the compressed gas is used.

As the air-type blasting device, various types can be used. For example, compressed air is supplied into a tank into which the granules are charged, and the granules conveyed by the compressed air are separately separated. Direct pressure type blasting device that injects from the injection nozzle on the given compressed air flow, gravity type blasting device that ejects particles dropped from the particle tank by gravity on compressed air, injection of compressed air Various types of blasting devices such as a siphon type blasting device which sucks the granules by the negative pressure generated by the above and injects them together with the compressed air can be used.

FIG. 1 shows a blast device 1 configured as a direct pressure type.
An example of 0 is shown. The blasting apparatus 10 used in the apparatus of the present invention includes a compressor 12, a granular tank 14, and a dust collector 3.
The equipment constituting the main configuration of the blasting device 10 such as 0 is disposed outside the silo 100, and the injection nozzle 40 and the injection nozzle 4
A configuration in which only minimal equipment, such as a hose or the like, for supplying compressed air or blasted particles to the cylinder 0 or collecting dust sucked in the silo 100 is inserted into the silo 100. In addition, while minimizing the number of devices to be inserted into the silo 100 having a narrow entrance, various devices that can be an ignition source for the dust are arranged outside the silo, and the dust floats in the silo and the dust is generated. Care is taken not to cause a dust explosion even if a cloud occurs.

In FIG. 1, a compressor 12 disposed outside the silo 100 among the devices constituting the blast device 10 is a compressed air supply source for supplying compressed air to an injection nozzle 40 disposed inside the silo 100. Any type of compressor, such as a screw type, a reciprocating type, or a rotary type, may be used as long as it can supply compressed air at a desired pressure to the injection nozzle 40. Machine can be used.

In the present embodiment, as an example, of the compressor, the volume of the compression action space formed by the male rotor and the female rotor being engaged with each other, the male rotor and the female rotor are mutually connected. A screw-type compressor is used which is configured to gradually decrease by rotating in the opposite direction and to compress and discharge the air in the compression action space.

This screw type compressor generally introduces lubricating oil into the compression working space for sealing the compression working space and cooling and lubricating the rotor during the compression work. Since the lubricating oil may be mixed as oil vapor into the compressed air discharged by the heat generated during the compression action and discharged, the silo 100 to be treated is used as a raw material such as food or feed. In consideration of the fact that these are cereals, a model that uses water instead of this lubricating oil is used to prevent the lubricating oil injected with compressed air as oil vapor from adhering to these cereals and silo inner walls. And a screw-type compressor that does not require lubricating oil or water for lubrication and cooling.

As described above, in the compressor 12 of the type using lubricating oil or water for sealing, cooling, and lubrication, the oil, moisture, odor, etc. in the compressed air to be injected are completely eliminated. In order to be removed, the after-cooler which cools the discharge air discharged from the compressor 12 to condense and remove oil vapor and water vapor contained in the discharge air, a dehumidifying device such as a refrigerating type and an adsorption type, an oil mist filter, a deodorizing device Equipment will be provided.

The compressed air introduced into the injection nozzle 40 may be mixed with an inert gas, for example, so that dust explosion is more unlikely to occur.

The compressor 12 has a power source for rotating the rotor, and various known power sources such as an engine and a motor can be used as the power source. In the present embodiment, since the compressor 12 is disposed on the upper wall of the silo 100 to perform the operation of removing the adhering matter, the compressor is an engine driven compressor that does not need to secure a power supply as an example. .

In FIG. 1, reference numeral 14 denotes a granule tank. The granule tank 14 is communicated with an injection nozzle 40 to be described later via a granule introduction pipe 51 so that the granules put into the granule tank 14 are discharged. It is configured to be supplied to the injection nozzle 40 by falling due to gravity.

The grains in the silo 100 sucked and collected by the suction means 20 are injected into the granule tank 14 as spray granules.

The dust collector 30, which is one of the components of the blast device 10, is composed of dust floating in the silo 100 via a duct 41 provided in an injection nozzle 40, which will be described later, and injection particles sucked together with the dust. A dust box for collecting dust and the like is provided at a bottom portion of the dust collector 30 for sucking a grain and the like separated from the inner wall of the silo 100 due to a collision of the injected granules and collecting only the dust. The dust box 32 is configured to be able to be taken out, and the collected dust is configured to be discarded.

Further, an exhaust fan 3 is provided above the dust collector 30.
The exhaust fan 31 is rotated by a rotation driving means such as a motor to discharge the air in the dust collector 30.

A cyclone 36 is provided between the dust suction pipes 52b and 52c communicating between the dust collector 30 and the duct 41 of the injection nozzle 40 (see FIG. 3).
An opening 36a formed at the center of the upper end wall of the cyclone 36 through the dust suction pipes 52a and 52b.
And the duct 41 of the injection nozzle 40 is connected to the opening 36 formed in the side wall near the upper end of the cyclone 36.
b through a dust suction pipe 52c.

Therefore, the dust collector 30, the dust suction pipes 52a and 52b, the cyclone, the dust suction pipe 52c, and the duct 41 become negative pressure sequentially due to the rotation of the air blower 31, and are sucked through the duct 41 provided in the injection nozzle 40. The dust and cereal thus collected are transferred to the cyclone 36 via the dust suction pipe 52c.
Vortex generated in the cyclone 36 by being introduced into the
Grains having a larger particle size than the dust and falling at a high speed fall to the bottom of the cyclone 36 and are separated and classified to be collected.

A pipe 53 is connected to the lower end of the cyclone 36 for returning the collected grains into the silo 100. The particles collected in the cyclone 36 pass through the pipe 53. It is configured to be returned into the silo 100 again, so that only dust is collected in the dust collector 30.

Note that the cyclone 36 is not necessarily an essential component. For example, the cyclone 36 is sucked between the shields 42 and 43 by changing the shape of the shields 42 and 43 and changing the connection position and angle of the dust suction pipe 52c. The atmosphere in the silo 100 swirls in this space and is sucked into the dust suction pipe 52c, and by adding a function similar to a cyclone to the shields 42 and 43, the granular material having a relatively high falling speed is obtained. May fall in the silo 100 without being sucked into the dust suction pipe 52c. Also, the suction force of the dust collector 30 is:
Adjust according to the particle size, weight, etc. of the grain stored in the silo 100 to be treated, and adjust the suction power to suck the dust floating in the silo 100 but not to suck the grain, which is granular. By doing so, the dust collector 30 may be configured to suck only dust. Further, the cyclone 36 is arranged outside the silo 100 and on the granule tank 14, and the grains collected by the cyclone 36 are transferred to the granule tank 14.
In this case, the suction means 20 may be used only as a means for collecting the grains sprayed in the early stage of the deposit removing operation as described above.

Note that a generator (not shown) and the like are further provided outside the silo 100 as a power source for each device. The generator is driven by, for example, a diesel engine to generate power, and the current is used to rotate a fan 31 provided in the dust collector 30, a cooling fan of an air cleaner arranged on the discharge side of the compressor 12, and the like. Drive electric equipment.
This generator is not always necessary when an AC power supply or the like can be used.

As described above, the powder tank 14, the dust collector 30,
Each device such as the compressor 12 is disposed outside the silo 100, and the granular material introduction pipe 51, the dust suction pipe 52
(52a, 52b, 52c), the injection nozzle 40 communicated via the compressed air introduction pipe 55 is arranged in the silo 100.

As shown in FIG. 2, the injection nozzle 40 is attached to the distal end of a compressed air introduction pipe 55, and the outer periphery of the injection nozzle 40 has a conical shielding that expands in the direction in which the particles are injected. It is surrounded by bodies (42, 43).

As shown in FIG. 1, only one injection nozzle 40 may be provided for one blast device 20, or a plurality of injection nozzles may be provided as shown in FIG. Not limited.

When a plurality of injection nozzles 40 are provided,
The number of pipes such as hoses and the number of cyclones 36 are increased according to the number of the injection nozzles 40.

The nozzle body 44 of the injection nozzle 40
A substantially cylindrical container-shaped particle guiding chamber 45 is formed in which the particles are guided from the particle tank 14 through the particle introducing pipe 51 to the particle introducing port, and the particles are guided. A conical inner surface 46 narrowed in a conical shape is formed at the front end, and a nozzle 47 having a flow path penetrating the center of the conical inner surface 46 is provided. Then, an air injection pipe 48 inserted from the rear of the granule guiding chamber 45 toward the center of the inner surface 46 of the cone.
Are disposed. The air injection pipe 48 is fixed to the rear part of the nozzle body 44 by a screw. The air injection pipe 48 is connected to the above-described compressor 1 serving as a compressed air supply source.
2 is communicated via a compressed air introduction pipe 55, and compressed air generated by the compressor 12 is sent to inject an air stream from the tip of the air injection pipe 48.

A shield (42, 43) is attached to the outer periphery of the nozzle 47 of the injection nozzle 40, and dust floating when the injection particles are injected from the tip of the nozzle 47 is formed between the two shields 42, 43. It is prevented from being sucked and collected through the space provided and diffused in the silo 100.

The shields (42, 43) have a conical shape that spreads in the direction in which the particles are ejected. The inner shield 42 is attached to the distal end of the nozzle 47 and the proximal end of the nozzle 47. And an outer peripheral shielding member 43 surrounding the inner peripheral shielding member 42 at a predetermined interval. The inner peripheral shielding member 43 has the same inclination angle and different sizes in the present embodiment. The two outer shields 42 and 43 are arranged at a predetermined interval, and the space formed between the two shields 42 and 43 is
In addition to the duct 41 for sucking dust, an opening is formed in the side wall of the outer peripheral side shield 43, and the space is connected to the dust collector 30 via the dust suction pipe 52 (52c, 52b, 52a) through this opening. It is configured to be able to suck and collect dust generated during the ejection of the ejected granules in communication with each other.

As described above, the compressed air introduction pipe 55 communicated with the injection nozzle 40 and inserted into the silo 100
And the dust suction pipe 52 (52c, 52b, 52a) are preferably excellent in wear resistance, and have conductivity so that static electricity generated in the silo 100 can escape to the outside of the silo. Is preferred.

In the present embodiment, as a conduit used for each part, a conductive wire is wound around the outer periphery and a wear-resistant hose having conductivity is used, and compressed air is supplied to the injection nozzle 40. Compressed air introduction pipe 55 and a pipe line 5 for returning grains accumulated at the bottom of the cyclone 36 into the silo 100
3 is a wear-resistant hose having a diameter of 38 mm.
0 and the cyclone 36 have a diameter of 7 as the dust suction pipe 52c.
A 5 mm hose is used as the dust suction pipe 52a between the dust collector 30 and the cyclone 36 with a diameter of 100 mm.

When the compressed air is injected from the air injection pipe 48 in the injection nozzle 40 configured as described above, the injected compressed air is directed toward the center of the opening on one end side of the nozzle in which the conical inner surface 46 is formed. It is injected. By the injection of the compressed air, the inside of the granule induction chamber 45 formed in the nozzle body 44 becomes negative pressure, and the negative pressure causes the granule to fall from the granule tank 14 by gravity and be conveyed through the granule introduction pipe 51. The granules are introduced into the granule induction chamber 45 of the injection nozzle 40.

The particles introduced into the particle guiding chamber 45 are drawn by the compressed air injected from the air injection tube 48 to form a tapered tip of the air injection tube 48 and a conical inner surface. The air passes between the inner surfaces of one end of the nozzle 47 formed at 46, passes through the nozzle 47 together with the compressed air, and is jetted from the tip of the nozzle 47 into a space surrounded by the inner peripheral shield 42.

At this time, the space formed between the inner peripheral side shield 42 and the outer peripheral side shield 43 is filled with the dust suction pipe 52 (52).
a, 52b, 52c), which are sucked by the dust collector 30 communicated with the dust collector 30 and have a negative pressure.
The space between the ducts 41 becomes a duct 41, and dust generated when the particles ejected from the tip of the nozzle 47 collide with the inner wall of the silo 100 is subjected to the dust 41 and the dust suction pipe 52 (52a,
52b, 52c) and is sucked into the dust collector 30.

On the other hand, particles having a relatively large particle size that does not cause generation of dust, such as ejected particles and grains separated from the inner wall of the silo 100 due to collision of the particles,
A part thereof is dropped below the silo 100 by gravity and returned to the silo without being sucked even by the suction by the duct 41.

The particles sucked into the dust suction pipe 52c through the duct 41 formed between the shields 42 and 43 by the suction of the dust collector 30 are connected to the cyclone connected to the other end of the dust suction pipe 52c. Due to the vortex generated in the cyclone 36, the particles falling faster than the dust due to the vortex generated in the cyclone 36 accumulate at the bottom of the cyclone 36, and pass through a pipe 53 through an opening formed at the lower end of the cyclone 36. Returned to silo 100.

Thus, the air flow from which the particles have been removed to become only dust is introduced into the dust collector 30 through the dust suction pipes 52b and 52a, and the dust is collected by the dust collector 30 to produce clean air. Is discharged out of the dust collector 30.

[Operating Means] In the case of performing the operation of removing the adhering matter without the worker entering the silo 100, the arm portion 7 of the blast device 10 to which the injection nozzle 40 is attached is installed.
0 and connecting portions 74 and 77 provided on the arm portion 70.
Or an operating means including a remote control device 80 for operating the joints 75 and 76 by operating them.
0 is made to face a desired position on the inner wall of the silo 100 so that extraneous matter in the silo 100 can be removed from outside the silo 100.

The arm portion 70 may have any configuration as long as it can control the direction or position of the injection nozzle 40 of the blast means 10 in the silo. The arm 70 is connected to wires 91 and 92 and suspended in the silo 100 in a substantially horizontal direction as shown in FIGS. A horizontal arm 72 arranged in parallel on the lower side of the arm, and a swing arm 7 swingably connected to both ends of the horizontal arm 72 and having the jet nozzle 40 of the blast device 10 attached to the end thereof.
3,73.

The silo 10 to be processed in the present invention
0 generally has a grain input opening 101 having a diameter of about 500 mm at the center of the upper wall thereof, as shown in FIGS.
An inspection opening 102 having a diameter of about 500 mm provided near the periphery of the upper wall is provided.
Is suspended in the silo 100 by wires 91 and 92 that are suspended from the cranes 93 and 94 and inserted into the silo 100 through the two openings 101 and 102. Therefore, in the present embodiment, the length of the above-described suspension arm 71 is substantially the same as the distance between the center of the grain introduction opening 101 and the center of the inspection opening 102 (see FIGS. 4 and 5). .

The suspension arm 71 is selected from a plurality of suspension arms 71 having a predetermined length in accordance with the size of the silo 100 to be processed. The suspension arm 71 may be configured to be extendable and retractable by various known configurations. Further, the suspension arm 71 may be formed of a plurality of members. May be configured to be compatible with silos 100 of various sizes by joining or separating.

One end of the suspension arm 71 described above,
Opening 10 for grain input provided in the center of the upper wall of the silo
At one end on the side suspended from the wire 91 inserted into the silo 100 from above 1, a connecting portion 74 is formed by rotatably supporting the above-mentioned horizontal arm 72 in the horizontal direction. Is provided with a power generation means such as a motor, and is configured to be rotatable at a predetermined angle in the horizontal direction about a support shaft connecting the suspension arm 71 and the horizontal arm 72 at the connection portion 74. The motor preferably uses an explosion-proof motor to prevent it from being a source of ignition for dust.

The horizontal arm 72 may be supported by the suspension arm 71 at a position bisected in the longitudinal direction as shown in FIG. 4, or one of the horizontal arms 72 as shown in FIG. May be pivotally supported on the suspension arm at a position biased toward the end of the horizontal arm 72. The position of the pivot is not limited, but at least one end of the horizontal arm 72 is connected to the injection nozzle via a swing arm 73 described later. The granules ejected from 40 are arranged at positions where they can be ejected onto the inner wall of silo 100.

As described above, the swing arms 73, 73 are attached to both ends of the horizontal arm 72 rotatably supported by the suspension arm 71.
The swing direction of the spray nozzles 40, 40 attached to the tips of the swing arms 73, 73 is adjusted to a predetermined direction by the swing of the swing arm 73, so that the granules can be sprayed at a wide angle.

The swing arms 73, 73 are connected to each other as shown in FIG.
In the embodiment shown in FIG.
6 (A) and 6 (B) through FIG. 6, two members 73a, 7 which are connected so as to be swingable in the plane direction with respect to the paper surface.
3b, and one end of each of the swing arms 73, 73 is connected to one end of the horizontal arm 72 via a joint 75, 75 so as to be in a plane direction with respect to the paper surface in FIGS. 6A and 6B. They are swingably connected.

One of the members 73a, 73b constituting the swing arms 73, 73 near the horizontal arm 72.
A portion of the portion 3b near the joint 76 is provided with a connecting portion 77 that is rotatable about the center of the swing arm 73 in the longitudinal direction as a rotation axis.

Power generating means such as an explosion-proof motor is attached to each of the joints 75 and 76 and the connecting portion 77, and the swing arms 73 and 73 are connected to each of the joints 75 and 76 and the connecting portion 77. The arm portion 70 can be complicatedly moved by bending or rotating.

Therefore, the injection nozzles 40, 40 attached to the tips of the swing arms 73, 73 by the swing arms 73, 73 thus configured move at a very wide angle to change the injection direction. It is configured to be able to.

A crane 93,
The arm unit 70 configured as described above and suspended in the silo by 94 is connected to, for example, a remote control device 80 as shown in FIGS. Operation lever 8 provided on control panel 80
By operating the switches 1 and various switches, the arm 70 can be operated from the outside of the silo 100 to direct the injection nozzles 40, 40 attached to the tips of the swing arms 73, 73 in desired directions and positions.

When the cranes 93 and 94 for suspending the arm 70 in the silo 100 can be operated by the remote control device 80, the position of the arm 70 in the height direction of the silo 100 is changed. Move to silo 1
00, the deposits on the inner wall can be effectively removed.

For example, CCD cameras 96, 96 and the like are attached to the tips of the swing arms 73, 73, and images taken by the CCD cameras 96, 96 are provided in a remote control device 80. Monitor screen 8
2, 82, etc., the operation of the arm unit 70 may be performed while monitoring the situation inside the silo 100.

Further, dust sensors 97, 97, which are optical sensors, for example, may be attached to the ends of the oscillating arms 73, 73 to monitor the state of dust generation.

[Operation of Adhered Material Removal Apparatus] In order to remove an attached substance without an operator entering the silo 100, the attached object removing apparatus of the present embodiment including the arm portion 70 and the remote control device 80 is used. , Silo 100 to be spray particles
Suction means 20 for sucking and collecting the grains inside the silo 100, and blast means 10 constructed as described above.
And the operating means including the above-described arm portion 70 for operating the injection nozzle 40 of the blast means 10 and a remote control device.

When the nozzle 40 of the blasting device 10 is attached to the arm 70, the attached matter removing device has one of the openings 101 and 102 provided in the upper wall of the silo as shown in FIG. In the case of the embodiment, the lengthwise direction is inserted into the silo 100 from the inspection opening 102).

When the silo 100 is not covered with a roof, the arm 70 is connected to each of the connecting portions 74 and 77, for example.
Alternatively, the joints 75 and 76 can be inserted in a state of being extended in a straight line. However, in the silo 100 in which the upper wall is further covered with a roof, the arm 70 is divided for each member. Each of the divided members is placed in a silo 10
The arm 70 can be easily inserted even when the space between the upper wall of the silo 100 and the roof covering the silo 100 is narrow. Can be.

When the arm portion 20 is inserted, one end of the suspension arm 71 in the insertion direction is connected to an opening different from the opening into which the arm portion 70 is inserted (the grain input port 101 in this embodiment). It is connected to a crane 93 arranged near this opening (the grain input port 101 in this embodiment) via a wire 91 inserted and passed through the silo 100, and the other end of the suspension arm 71 is It is connected to a crane 94 disposed near the other opening (inspection opening 102 in the present embodiment) via a wire 92, and gradually the silo 1
Insert into 00.

When the insertion of the arm 70 into the silo 100 is completed, the crane 93 disposed near the opening (the grain input port 101 in the present embodiment) other than the one where the arm 70 was inserted is used. The wire 91 is wound up, and the arm 70 is suspended in a substantially horizontal state in the silo 100 by the two cranes 93 and 94.

The dust suction pipe 52 (52a, 52b, 52c) connected to the injection nozzle 40, the granular material introduction pipe 5
1. Hose and cyclone 36 such as compressed air introduction pipe 55
And the like may be suspended together in the silo 100 by the cranes 93 and 94 that suspend the arm 70 together with the arm 70, and the silo 10 may be separately provided from the arm 70.
A wire and a crane may be provided to be suspended within zero.

The granules sprayed from the spray nozzle 40 are soybeans, corn, and the like stored in the silo 100.
A grain input opening 101 or an inspection opening 1 formed in the upper wall of the silo 100 using a grain such as Kollan.
02 (the inspection opening 102 in this embodiment) and the pipe 54 inserted into the silo 100 and the pipe 5
The grains stored in the silo 100 are sucked and collected by the suction means 20 connected to the hopper 4, and the collected grains are thrown into the granule tank 14 of the blasting device 10 as spray granules, and the adhered matter is deposited. Ready for removal.

As described above, when the preparation for removing the deposit by the deposit removing device of the present invention is completed, the joints 75 and 76 and the connecting portions 74 and 77 of the arm 70 are operated by operating the remote controller 80. When driven, the direction of the injection nozzles 40, 40 attached to the tips of the oscillating arms 73, 73 is adjusted so that the injected granules are ejected substantially at right angles to the deposit in a state of being separated from the deposit by about 20 cm. In addition to spraying the spray particles, a dust suction pipe 52 (52a, 52b, 52c) is formed in a space forming a duct 41 formed between shields 42, 43 surrounding the outer periphery of the nozzle 47 of the spray nozzles 40, 40.
Through the dust collector 30. By the injection of the particles, the particles collide with the attached matter attached to the inner wall of the silo 100, and the attached matter is removed by an impact at the time of the collision,
At this time, the dust floating in the silo 100
0, and the silo 1
Dust explosion due to floating of dust in the inside of 00 is prevented.

The particles ejected from the injection nozzle 40 and a part of the particles such as grains separated from the inner wall of the silo due to the impact of the collision of the particles are transmitted along the inner wall of the silo 100 due to the weight thereof, and the bottom of the silo 100 At the same time, the sprayed particles and a part of the particles such as the grains separated from the inner wall of the silo 100 pass through the dust 41 formed between the shields 42 and 43 in the dust suction pipe 52 (52a, 52a). 52b, 52c)
The dust and the granules sucked by the dust collector 30 sucked through the air passage pass through the dust suction pipe 52c and are introduced into the cyclone 36 provided between the dust suction pipe 52c and the dust suction pipe 52b. Then, the particles having a relatively large particle diameter and a high falling speed as compared with the dust are collected in the cyclone 36 and returned into the silo 100 via a pipe 53 connected to the lower end of the cyclone 36. Cyclone 3
The dust from which the particles have been separated by passing through 6 is collected in the dust collector 30.

The operator operating the remote control device 80 takes an image of the state of removal of the deposits adhering to the inner wall of the silo 100 via, for example, CCD cameras 96, 96 attached to the tips of the swing arms 73, 73. The image is monitored by monitors 81, 81 and the like provided in the remote control device, and the silo 100 is operated by operating the arm 70 while monitoring the state of removal of the attached matter.
The granules are sprayed over the entire inner wall.

In this manner, the same operation is repeated while operating the cranes 93 and 94 for suspending the arm 70 while gradually lowering the arm 70 while operating the arm 70, whereby the silo 100 Deposits adhering to the inner wall are almost completely removed.

[0085]

According to the deposit removing method and the deposit removing apparatus of the present invention configured as described above, it is possible to remove deposits such as grains or the like deposited in the silo without human intervention. As well as using grains stored in the silo as spray particles, foreign substances other than grains are not mixed into the silo inner wall or the grains stored in the silo, and moreover, By suctioning the surrounding atmosphere together with the injection, a dust cloud can be prevented from being generated in the silo during the removal operation, thereby providing a deposit removing device that does not cause a dust explosion.

Further, according to the structure of the present invention provided with the operating means including the arm portion and the remote control device, it is possible to carry out such an operation for removing the adhered substance from outside without the worker entering the silo. Therefore, it is possible to remove adhering or accumulating deposits on the inner wall of the grain silo without causing dangerous altitude work, lack of oxygen, death by fumigation gas, etc. Of the present invention can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing the entire configuration of an attached matter removing device of the present invention.

FIG. 2 is a sectional view of an injection nozzle.

FIG. 3 is an explanatory view of piping between an injection nozzle and a dust collector.

FIG. 4 is a schematic explanatory view showing a usage example of an arm unit.

FIG. 5 is a schematic explanatory view showing a usage example of an arm unit.

FIGS. 6A and 6B are front views of an arm portion, in which FIG. 6A shows a state where a joint is extended, and FIG. 6B shows a state where the joint is bent.

FIG. 7 is a front view of the remote control device.

FIG. 8 is a right side view of the remote control device.

FIG. 9 is an explanatory view showing a method of inserting an arm into a silo.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Adhered matter removal apparatus 10 Blast means (blast apparatus) 12 Compressor 14 Granule tank 20 Suction means 30 Dust collector 31 Air blower 32 Dust box 34 Inlet 36 Cyclone 40 Injection nozzle 41 Duct 42 Shield (inner peripheral side) 43 Shield (Outer peripheral side) 44 Nozzle body 45 Granule induction chamber 46 Conical inner surface 47 Nozzle 48 Air injection pipe 51 Granule introduction pipe 52 (52a, 52b, 52c) Dust suction pipe 53 Pipe line (cyclone lower end) 54 Grain collection pipe 55 Compression Air introduction pipe 60 Operating means 70 Arm part 71 Suspended arm 72 Horizontal arm 73 Swing arm 73a, 73b Swing arm (part) 74, 77 Connecting part 75, 76 Joint 80 Remote control device 81 Operating lever 82 Monitor screen 91 , 92 Wire 93, 94 Crane 96 Camera 97 Dust detector Sa 100 silo 101 opening (cereal on) 102 apertures (for inspection)

Continued on the front page F-term (reference) 2B100 AA02 GA01 GB19 3E070 AA19 AA21 AB13 DA01 DA03 RA01 RA02 RA07 VA30 4D053 AA03 AB01 BB02 BD04 CA01 CD13 CD23 DA02

Claims (7)

[Claims] 1. A method for storing grains, treating a silo having an opening in an upper wall as an object to be processed, and removing an adhering substance adhered to an inner wall of the silo. Blast means comprising a compressed air supply source for supplying compressed gas to the injection nozzle, and a granular tank for supplying injected particles to the injection nozzle, wherein the injection nozzle of the blast means is disposed in the silo. And, through a pipe inserted into the silo through an opening formed in the upper wall of the silo, the compressed air supply source and the granule tank arranged outside the silo are communicated with the injection nozzle, Introducing the grains in the silo into the granule tank as spray granules, and spraying the grains onto the deposits on the silo inner wall through the spray nozzle; The method of removing deposits. 2. An inner peripheral side shield that surrounds at least a tip portion of the injection nozzle with an inner peripheral side opening that opens in a direction in which particles are ejected, and an outer peripheral side shield that opens in a direction in which particles eject. Surrounds the body at a predetermined interval, communicates a space formed between the inner peripheral side shield and the outer peripheral side shield with a dust collector disposed outside the silo, and a space formed between the shields by the dust collector. 2. The method for removing deposits on the inner wall of a grain silo according to claim 1, wherein the atmosphere inside the silo is sucked through the silo to collect dust floating in the silo outside the silo. 3. An apparatus for storing grain, treating a silo having an opening in an upper wall as an object to be treated, and removing an adhering substance adhered to an inner wall of the silo, wherein a spray gas and compressed gas are sprayed on the inner wall of the silo. An injection nozzle for injecting, a compressed air supply source for supplying a compressed gas to the injection nozzle, and a granule tank in which grains in the silo are introduced as the injection granules and supply the injection nozzle with grains that are the injection particles. The injection nozzle is arranged in the silo, the compressed air supply source and the granular tank are arranged outside the silo, and inserted into the silo through an opening formed in the upper wall of the silo. The compressed air supply source and the granular material tank are connected to the spray nozzle through a provided pipe. 4. A suction in which grains in the silo are suctioned from an opening formed in an upper wall of the silo through a pipe inserted into the silo, and are collected as spray granules to be introduced into a granule tank. 4. The apparatus for removing deposits on the inner wall of a grain silo according to claim 3, further comprising means. 5. At least a tip portion of the injection nozzle is surrounded by an inner peripheral side shield opening in a direction in which the particles are ejected, and the inner peripheral side shield is opened by an outer side shield opening in a direction in which the particles are ejected. Surrounding the body at a predetermined interval, and communicating one end of a pipe to a space formed between the inner peripheral shield and the outer peripheral shield, and passing the pipe through an opening formed in an upper wall of the silo. To extend outside the silo,
The grain silo according to claim 3 or 4, wherein the other end of the pipe is connected to a dust collector that sucks a space formed between the shields through the pipe and collects dust and the like. Debris removal device for inner wall. 6. In a conduit communicating between the space between the shields and the dust collector, the particles sucked together with the dust are separated from the dust.
6. The apparatus for removing deposits in a grain silo according to claim 5, further comprising a cyclone for classification and recovery. 7. An arm having a joint or a connecting portion formed by rotatably supporting a plurality of rod-shaped members, and an arm having a power source for operating the joint or the connecting portion. A remote control device for driving a provided power source to operate a joint or a connecting portion, wherein an injection nozzle of the blast device is attached to the arm portion, and the arm portion is provided through an opening formed in an upper wall of the silo. Inserted into the silo, suspended, and the remote control device is disposed outside the silo, and the operation of the arm by the remote control device allows the injection nozzle to face a desired position on the inner wall of the silo. Claim 3
The apparatus for removing deposits on the inner wall of a grain silo according to any one of claims 1 to 6.