CN113716226A - Silo - Google Patents

Abstract

The invention provides a large silo, wherein when a main shaft (40) rotatably arranged in a storage part (32) rotates, a plurality of stirring blades (50) are rotated along with the rotation of the main shaft (40) so as to stir the stored materials.

Description

Silo

RELATED APPLICATIONS

The present application is a second divisional application of chinese patent application No. 201811481019.7 entitled "silo" filed on 12/05/2018, which claims all priority of the original application and is incorporated herein by reference in its entirety.

Technical Field

The invention relates to a silo.

Background

Conventionally, there has been known a blade driving device for a silo having a simple structure, which can drive a rotary blade without a large-sized speed reducer or motor. For example, patent document 1 discloses a rotary vane driving device in which a large-diameter gear or sprocket is provided on a vane main shaft, and the rotary vane is rotated with a large torque by engaging with a small-diameter gear or sprocket of a drive shaft and swinging the drive shaft by a hydraulic motor. In the rotary vane driving device, the hydraulic motor is easy to reverse, and even if a seizure failure occurs, the failure can be easily removed.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 11-227946

Disclosure of Invention

Technical problem to be solved by the invention

In recent years, from the viewpoint of efficiency, a larger silo has been demanded.

However, when the silo is enlarged, the surface area increases with the enlargement, and there is a problem that the temperature of the storage portion is likely to decrease when the ambient temperature is low. Further, since the parts of each part are enlarged during transportation, there is a problem that it takes much time to transport or install the parts.

In addition, in the case of fermenting the stored materials stored in the silo, it is necessary to supply air to the region filled with the materials, not to supply air to the unfilled space in the upper part of the silo body.

In addition, when the stored objects are stored in such a silo, the stored objects may be pushed and filled with each other by the weight of the stored objects. In this case, there is a problem that the stored material cannot be easily taken out from the outlet when taken out.

Furthermore, the failure in the blade drive of the silo is not only a seizure but also can assume various failures. For example, when the powder is stirred by the blade of the blade driving device, the powder may run out from around the main shaft of the blade. For example, in order to rotate the spindle, a gap or clearance is required between the spindle and a support member supporting the spindle, and when the rotation axis of the spindle is inclined for some reason, a clearance is generated between the spindle and the support member supporting the spindle as the spindle rotates. In this case, since there is a concern that the powder may be lost from around the main shaft, a silo capable of preventing the powder from being lost in advance has been desired.

Also, even if the hydraulic motor is rotated in reverse after the seizure failure is found, the driving portion may be broken before the seizure failure is found. For example, when a large foreign object is caught between a part of the blades and the bottom, an upward force is applied to the main shaft through a part of the blades, and the rotating shaft is inclined by the force.

The present invention has been made in view of the above problems, and an object thereof is to provide a large silo.

Further, another object is to provide a silo which can efficiently supply air to an area filled with a content received in a receiving portion.

Further, another object is to provide a silo that can easily take out stored storage.

Still another object is to provide a silo capable of reducing in advance the possibility of loss of powder stored in the silo from gaps or voids existing around the main shaft.

Further, another object is to provide a silo that can reduce the likelihood of breakage of the drive portion even if a snap-in failure occurs.

The technical means adopted by the invention

In order to achieve at least one of the above objects, the present invention adopts the following means.

The silo of the present invention is a silo for stirring a received material received in a receiving portion, the silo including:

a main shaft rotatably provided in the housing section; and

and a plurality of stirring blades which rotate along with the rotation of the main shaft.

In the silo of the present invention, when the main shaft rotatably provided in the housing portion rotates, the plurality of stirring blades are rotated in accordance with the rotation of the main shaft, and the housed objects housed in the housing portion are stirred.

The silo of the invention can also be the main shaft, and is formed by connecting a first shaft part, a second shaft part and a third shaft part; a heat insulating material is provided on the outer surface side of the housing portion; a heat insulator is provided on the outer side of the heat insulator. Therefore, since the main shaft is connected to each other by the first shaft, the second shaft, and the third shaft, the main shaft can be separated into the first shaft, the second shaft, and the third shaft and transported when transported. In other words, as the silo becomes larger, the labor for transportation and installation can be reduced even if the main shaft becomes larger. Further, since the heat insulator is provided outside the housing and the heat insulator is provided outside the heat insulator, heat exchange between the inside and the outside of the housing can be reduced even when a temperature difference between the inside and the outside of the housing is large. In particular, since the heat blocking material is further provided on the outer side of the heat insulating material, heat generated when sunlight or the like is applied to the outer wall is blocked, and the heat insulating material can block heat entering the inside through the heat blocking material, heat transmission can be prevented more effectively than in the case where the heat insulating material is located on the outer side of the heat blocking material. Therefore, the thermal insulation performance of the silo can be improved, and therefore, even if the silo is large, the temperature in the accommodating part can be maintained.

The silo of the present invention may further comprise: a first connecting plate screwed with the first shaft part; and a second connecting plate screwed with the second shaft part; the first shaft and the second shaft are fixed by screws, and the screws penetrate through the through holes of the first connecting plate and the second connecting plate. Therefore, by fixing the first shaft and the second shaft in a straight line and strongly, a large amount of the stored material in the storage portion of the large silo can be stirred by the rotation of the main shaft.

The silo of the present invention may further include an air supply blade, and the air supply blade may be provided with a through hole at a rear side with respect to the rotational direction, through which the air supplied from the air supply unit can be supplied to the housing unit. Therefore, even if the silo is large, air can be supplied from the air supply portion to the storage portion. That is, in the case of a large silo, the amount of the stored material stored in the storage portion increases, and the stored material is pushed out by the weight of the stored material on the lower side of the storage portion. In such a state where the stored material is pushed and filled, the air is blocked by the pushed and filled stored material, and the through hole is provided at the rear side with respect to the rotation direction of the rotary blade, whereby the pushed and filled stored material is agitated with the rotation of the rotary blade, and the air is easily supplied.

The silo of the present invention may further comprise: a driving unit for rotating the main shaft; the driving unit extends and contracts in a direction substantially perpendicular to the rotation axis of the main shaft, and includes a hydraulic cylinder supported at both ends by spherical bearings. Therefore, even if the rotation axis of the main shaft is slightly inclined due to an error or the like in connecting the first shaft, the second shaft, and the third shaft as the main shaft, both ends of the hydraulic cylinder are supported by the spherical bearings, and therefore the hydraulic cylinder is inclined in accordance with the inclination of the rotation axis of the main shaft, and the main shaft can be rotated. In other words, strict precision is not required when the first shaft, the second shaft, and the third shaft are connected, so that workability is improved, and labor for execution can be reduced.

The silo of the present invention may further comprise: an air supply blade having a plurality of ventilation holes and rotating along with the rotation of the main shaft; and a supply unit that supplies air to the air supply blade. In the silo, a main shaft rotatably arranged in a receiving part is provided with a plurality of stirring blades and air supply blades; the stirring blade and the air supply blade are rotated individually with the rotation of the main shaft. In this case, since the air supply blade is provided with the plurality of vent holes, the air supplied from the supply portion is supplied from the vent holes to the housing portion in accordance with the rotation of the air supply blade. In this way, by supplying air while stirring the stored object stored in the storage section, not only the vicinity of the air supply blade but also the entire stored object stored in the storage section can be supplied with air.

The silo of the present invention may further comprise: a pair of auxiliary supply blades having a plurality of ventilation holes and rotating along with the rotation of the main shaft; a length of the auxiliary supply blade is shorter than a length of the air supply blade; the supply unit supplies air to the air supply blade and the auxiliary supply blade. By thus making the length of the auxiliary supply blade shorter than that of the air supply blade, the main shaft can be rotated with less power while increasing the supplied air. In other words, the operating costs when using the silo can be reduced.

The silo of the present invention may be such that a pair of the air supply blades are provided below the stirring blades; the auxiliary supply blades are provided in a pair directly above a pair of the air supply blades located on the lowermost side. Therefore, more air can be supplied at a lower position where air supply is difficult, and thus the amount of air supplied can be made more nearly uniform. Further, since the auxiliary supply blade is provided directly above the air supply blade, air can be supplied from the auxiliary supply blade to the stirred storage object by the rotation of the air supply blade, and therefore, even the auxiliary supply blade shorter than the air supply blade can sufficiently supply air.

The silo of the present invention may be such that the air supply blade and the auxiliary supply blade are provided at positions substantially perpendicular to each other. Therefore, the air can be supplied from the air supply blade to the farthest position, and thus the amount of air supplied can be made more nearly uniform.

The silo of the present invention may be such that the interval between the adjacent vent holes becomes narrower as the distance from the main shaft increases. The farther the distance between the air supply blades is from the position of the main shaft of the air supply blades, the relatively more air can be supplied from the position farther from the main shaft by narrowing the interval between the vent holes as the distance from the main shaft becomes smaller.

In the silo of the present invention, a plurality of claw portions may be provided to at least one of the plurality of stirring blades. In this silo, a plurality of stirring blades are rotated in accordance with the rotation of a main shaft rotatably provided in a housing portion, and the stored material stored in the housing portion is stirred. In this way, the possibility of pushing and filling the objects stored in the storage part is reduced by rotating the plurality of stirring blades, and the objects are stirred by the stirring blades when being pushed and filled, so that the objects gradually pushed and filled are loosened, and the possibility of pushing and filling the whole object is reduced in advance. Therefore, the article can be easily taken out when the article is taken out. At this time, since at least one of the stirring blades is provided with a plurality of claw portions, the plurality of claw portions also rotate with the rotation of the stirring blade, and the stored material is stirred. Therefore, the gradually pushed and filled stored article can be released more than the case without the claw portion, and therefore, the stored article can be easily taken out when taken out from the storage portion.

The silo of the present invention may be configured such that the plurality of claw portions are provided on the stirring blade located on the lowermost side of the main shaft; the plurality of claw portions are positioned above the bottom surfaces of the stirring blades provided to the plurality of claw portions. Since the contents are pushed and filled more easily on the lower side of the storage section, the claw portion is provided on the stirring blade located on the lowermost side of the main shaft, so that the possibility of pushing and filling the contents is reduced in advance, and the contents gradually pushed and filled are loosened, and can be easily taken out when taken out from the storage section. At this time, since the claw portion is located above the bottom surface of the stirring blade, in the case where the stirring blade located on the lowermost side is provided with the claw portion, the grasping portion does not contact the bottom surface of the housing portion. Therefore, the possibility that the claw portion contacts the bottom surface of the housing portion and the claw portion or the housing portion is damaged can be prevented in advance.

The silo of the present invention may be such that the claw portion is provided at a position offset to the other end side from the intermediate position between the main shaft side and the other end side of the stirring blade. Therefore, a position away from the main shaft, that is, a position where the interval through which the stirring blades pass when the stirring blades rotate is long, the claw portion passes at the position thereof. In this position, since the stored material is easily pushed and filled, the claw portion is provided on the other end side at an intermediate position between the main shaft side and the other end side, and the possibility of pushing and filling the stored material can be reduced in advance.

The silo of the present invention may be the stirring blade located at the lowermost side of the main shaft, and may have a vent hole for supplying air at the rear side with respect to the rotation direction; the claw portion is provided on the front side with respect to the rotation direction of the stirring blade. Therefore, the object to be pushed and filled first is loosened by the claw portion with the rotation of the stirring blade, and air is supplied from the ventilation hole at the gap generated with the rotation of the claw portion, whereby the possibility of the object to be pushed and filled can be further reduced.

The silo of the present invention may further comprise: a bearing portion rotatably supporting the main shaft from below; a support portion for rotatably supporting the spindle from a side direction; and a supply unit for supplying a liquid or gas between the main shaft and the support unit; the spindle has a part penetrating the bottom surface of the housing. In the silo, a bearing part rotatably supports a main shaft rotating together with a plurality of blades from below; the support part enables the main shaft to be rotatably supported from the side direction; and liquid or gas is supplied between the main shaft and the support portion from the supply portion. Therefore, even if a gap is formed between the spindle and the support portion and the powder stored in the storage portion flows into the gap, the liquid or gas supplied from the supply portion is pushed back into the storage portion, so that the possibility of the stored powder flowing out of the gap between the spindle and the support portion can be reduced. The liquid or gas is not particularly limited, and the liquid is preferably an oil such as a lubricating oil. Therefore, the main shaft can smoothly rotate, and the possibility of powder loss can be reduced. Further, the gas is preferably an inert gas such as nitrogen or argon, or air. Therefore, the influence on the stored powder is reduced, and the possibility of powder loss can be reduced in advance.

The silo of the present invention may be such that the support portion has a through hole for supplying the liquid or gas between the main shaft and the support portion. Therefore, the liquid or gas can be smoothly supplied between the spindle and the support portion through the through hole.

The silo of the invention can also be the main shaft and is provided with a first sealing part; the first sealing member seals the movement of the supplied liquid or gas at a contact surface that contacts the support portion; the opening of the through hole is located between the first sealing member and the receiving portion. Therefore, the possibility that the liquid or gas supplied between the spindle and the support portion moves to a place other than the housing portion can be reduced. In other words, the possibility of loss of the stored powder can be reduced by a smaller amount of liquid or gas.

The silo of the invention can also be the main shaft and is provided with a first pressure sensor; the first pressure sensor can measure the pressure of the liquid or gas between the support part and the main shaft; the first sealing member is located between the opening of the through hole and the first pressure sensor. Therefore, the movement of the liquid or gas can be detected when the liquid or gas moves from between the main shaft and the support portion to a position other than the housing portion beyond the seal of the first seal member. In other words, the sealing abnormality due to the first sealing member can be detected.

The silo of the invention can also be the supporting part, and comprises a spherical inner wheel, an intermediate part and a basic part; the spherical inner wheel presses the spindle from the transverse direction; the intermediate part controls the inner wheel of the spherical surface to move towards the direction far away from the main shaft; the base part is embedded with the intermediate part; the spherical inner wheel is provided with a through hole and a second sealing part; the through hole penetrates from the side of the intermediate part to the side of the spindle; the second sealing member seals the movement of the supplied liquid or gas at a contact surface with the intermediate member; the opening of the through hole is located between the second sealing member and the receiving portion. Therefore, the liquid or gas supplied between the spherical inner wheel and the intermediate member can be prevented from moving to the surface side of the spindle or to a position other than the housing portion. In other words, the possibility of loss of the accommodated powder can be reduced by a smaller amount of liquid or gas.

The silo of the invention can also be the spherical inner wheel and is provided with a second pressure sensor; the second pressure sensor may measure the pressure of the liquid or gas between the spherical inner wheel and the intermediate member; the second sealing member is located between the opening of the through hole and the second pressure sensor. Therefore, when the liquid or gas moves from between the spherical inner wheel and the intermediate member to a position other than the surface of the spindle or the receiving portion beyond the seal of the second seal member, the movement of the liquid or gas can be detected. In other words, the sealing abnormality due to the second sealing member can be detected.

The silo of the present invention may further comprise: a driving unit for rotating the main shaft; a support portion for rotatably supporting the spindle from a side direction; a bearing portion rotatably supporting the main shaft; and a sensing part for detecting the movement of the main shaft in the up-down direction; the spindle has a part penetrating the bottom surface of the housing. In this silo, when the main shaft supported by the bearing portion is rotated by the driving portion, the plurality of blades are rotated in accordance with the rotation of the main shaft, and the accommodated materials accommodated in the accommodating portion are stirred. In this case, if foreign matter is mixed in the storage, a seizure failure may occur due to the foreign matter existing between the bottom surface of the storage portion and the blade located at the lowermost position. If a snap-in failure occurs, a part of the blades are pushed upward by foreign matter, and the contact point between the part of the blades and the main shaft receives an upward force as the part of the blades move upward, and the contact point between the part of the blades and the main shaft moves upward, so that the rotation shaft of the main shaft is tilted. In this silo, since the sensor unit is provided for detecting the vertical movement of the main shaft, when the main shaft moves in one direction, the movement of the main shaft is detected by the sensor unit, and thus the occurrence of the seizure failure can be detected. By detecting the seizure failure in this manner, the possibility of breakage due to the rotation of the main shaft by the driving unit in a state where the seizure failure has occurred can be reduced in advance.

The silo of the invention can also be the driving part, and is provided with an oil pressure driving device consisting of a hydraulic cylinder; the two ends of the hydraulic cylinder are positioned by spherical bearings. Therefore, even when the rotation axis of the main shaft is tilted as a part of the blades move upward, since both ends of the hydraulic cylinder are positioned by the spherical bearings, even when the hydraulic cylinder of the driving unit that drives the main shaft is rotated in a tilted state as the rotation axis of the main shaft is tilted due to a seizure failure or the like, the possibility of damage can be reduced in advance.

The silo of the invention can also be the supporting part, and is provided with a supporting body part and a fixing part; the support body part rotatably supports the main shaft from a side direction; the fixing part movably fixes the support body part. Therefore, when the rotation axis of the spindle in which the seizure failure occurs is inclined, the support main body moves in accordance with the inclination of the rotation axis of the spindle. At this time, since the support main body is movably fixed by the fixing portion, the inclined spindle is rotatably supported with the inclination of the rotation axis of the spindle by the movement of the support main body. Therefore, even if a snap failure occurs, the possibility of breakage of the support portion can be reduced in advance.

In the silo according to the present invention, the support body may include an elastic portion and an adjustment portion; the elastic part rotatably supports the main shaft; the adjusting part increases the supporting force to the main shaft by pressing the elastic part. Therefore, the elastic part is pressed by the adjusting part, so that the supporting force of the main shaft is increased, and the main shaft can be supported reliably.

The silo of the invention can also be fixed by the screw for the fixing part; a through hole is formed in a part of the screw penetrating the support body; the diameter of the screw is smaller than the inner diameter of the through hole. Therefore, when the fixing portion is fixed to the support main body portion by a screw, since there is a space between the side surface of the screw and the through hole of the support main body portion, a snap-in failure occurs, and when the main shaft is rotated in an inclined state by the rotation shaft of the main shaft, the support main body portion can move the gap portion between the through hole and the screw in association with the rotation of the main shaft, so that the inclination of the rotation shaft of the main shaft is allowed, and when the main shaft is rotated in an inclined state by the rotation shaft of the main shaft, the possibility of damage associated with the rotation can be reduced. In addition, even if a seizure failure occurs, the possibility of breakage can be reduced in advance.

Drawings

Fig. 1 is an explanatory view seen from a side surface side, and shows an outline of the structure of the silo 20 of the first embodiment.

Fig. 2 is an explanatory view as viewed from above, in which positional relationships among the agitating blade 50, the air supply blade 60, and the auxiliary supply blade 70 are explained.

Fig. 3 is an explanatory view schematically showing the configuration of the first connection plate 47 and the second connection plate 49.

Fig. 4 is a schematic explanatory view for explaining the structure of the stirring blade 50.

Fig. 5 is a schematic explanatory view for explaining the structure of the air supply blade 60.

Fig. 6 is an enlarged view of a portion a in fig. 1.

Fig. 7 is a schematic explanatory view for explaining the structure of the auxiliary supply blade 70.

Fig. 8 is a schematic explanatory diagram for explaining the configuration of the driving unit 90.

Fig. 9 is an explanatory diagram for explaining the operation of the driving unit 90.

Fig. 10 is an explanatory view seen from a side surface side, and shows an outline of the structure of the silo 220 of the second embodiment.

Fig. 11 is an explanatory diagram for explaining a positional relationship of the stirring blade 250.

Fig. 12 is an enlarged view of a portion a in fig. 10.

Fig. 13 is a schematic explanatory view showing the structure of the air supply blade 260.

Fig. 14 is a schematic explanatory view showing the structure of the auxiliary supply blade 270.

Fig. 15 is an explanatory view seen from a side surface side, and shows an outline of the structure of silo 320 of the third embodiment.

Fig. 16 is an explanatory diagram for explaining a positional relationship of the stirring blade 350.

Fig. 17 is a schematic explanatory view showing the structure of the stirring blade 350 j.

Fig. 18 is an explanatory view seen from a side surface side, and schematically shows a structure of the silo 420 of the fourth embodiment.

Fig. 19 is an explanatory view as viewed from above, which is for explaining a positional relationship of the stirring blade 450.

Fig. 20 is a partial enlarged view around the spherical inner wheel 462.

Fig. 21 is a partially enlarged view showing the periphery of the spherical inner ring 462 at the time of abnormal rotation of the spindle 440.

Fig. 22 is an explanatory view seen from a side surface side, and schematically shows a structure of a silo 520 of the fifth embodiment.

Fig. 23 is an explanatory view as viewed from above, which is for explaining a positional relationship of the stirring blade 550.

Fig. 24 is a schematic explanatory view for explaining the structure of the stirring blade 550 i.

Fig. 25 is an enlarged view of a portion a in fig. 22 for explaining the structure of the support portion 560.

Fig. 26 is a schematic explanatory diagram for explaining the configuration of the driving unit 570.

Fig. 27 is an explanatory diagram for explaining an operation of the driving unit 570.

Description of reference numerals

20 … … silo; 30 … … a body portion; a 32 … … storage part; 40 … … a main shaft;

41 … … hollow part; 42 … … a first shaft portion; 44 … … second shaft portion;

46 … … a third shaft portion; 47 … … first connecting plate; 47a … … through holes;

47b … … screw hole; 47c … … screw; 48 … … vent opening;

49 … … second connecting plate; 50 … … stirring blade; 50a … … first stirring blade;

50b … … second stirring blade; 50c … … third stirring blade;

50d … … fourth stirring blade; 50e … … fifth stirring blade;

50f … … sixth stirring blade; 52 … … inclined plane; 60 … … air supply vanes;

60a … … first air supply blade; 60b … … second air supply blade;

60c … … third air supply blade; 60d … … fourth air supply blade;

62 … … inclined plane; 64 … … a hollow tube; 66 … … vent hole;

70 … … auxiliary supply vanes; 70a … … first auxiliary supply blade;

70b … … second auxiliary supply blade; 72 … … inclined plane; 74 … … hollow tubes;

76 … … vent hole; 80 … … bearing portion; 90 … … a drive section; 92 … … gear;

94 … … brake; 95 … … rotating the plate; 95a … … rotating the plate; 95b … … rotating the plate;

96 … … hydraulic cylinders; 96a … … hydraulic cylinder; 96b … … hydraulic cylinder;

97 … … spherical bearing; 97a … … spherical bearing; 97b … … spherical bearing;

98a … … is connected to the shaft; 99 … … spherical bearings; 99a … … spherical bearing;

99b … … spherical bearings; 100a … … connecting shaft; 147 … … third web;

149 … … fourth connecting plate; 220 … … silo; 222 … … storage part;

240 … … a main shaft; 250 … … stirring blade; 250a … … first stirring blade;

250b … … second stirring blade; 250c … … third stirring blade;

250d … … fourth stirring blade; 250e … … fifth stirring blade;

250f … … sixth stirring blade; 254 … … hollow portion; 260 … … air supply vanes;

260a … … first air supply blade; 260b … … second air supply blade;

260c … … third air supply blade; 260d … … fourth air supply blade;

262 … … inclined plane; 264 … … vent; 266, 266 … … vent holes;

270 … … auxiliary supply vanes; 270a … … first auxiliary supply vane;

270b … … second auxiliary supply blade; 272 … … inclined plane; 274 … … vent opening;

276 … … vent hole; 290 … … supply part; 320 … … silo; 322 … … storage part;

340 … … a main shaft; 350 … … stirring blade; 350a … … stirring blade;

350b … … stirring blade; 350c … … stirring blade; 350d … … stirring blade;

350e … … stirring blade; 350f … … stirring blade; 350g … … stirring blade;

350h … … stirring blade; 350i … … stirring blade; 350j … … stirring blade;

352 … … inclined plane; 354 … … jaw portion; 356 … … vent hole; 420 … … silo;

a 422 … … storage part; 440 … … a main shaft; 450 … … stirring blade;

450a … … stirring blade; 450b … … stirring blade; 450c … … stirring blade;

450d … … stirring blade; 450e … … stirring blade; 450f … … stirring blade;

450g … … stirring blade; 450h … … stirring blade; 450i … … stirring blade;

450j … … stirring blade; 450ja … … vent; 456 … … O-ring;

458 … … first pressure sensor; 459 … … channel; 460 … … support portion;

461 … … basic parts; 462 … … spherical inner ring; 463 … … intermediate parts;

464a … … first air duct; 464b … … second air duct; 466 … … O-ring;

467 … … O-rings; 468 … … second pressure sensor; 469 … … channel;

470 … … third pressure sensor; 472 … … channel; 480 … … bearing portion;

490 … … supply section; 520 a silo 520 … …; 530 … … a body portion;

532 … … storage part; 534 … … a sensing portion; 540 … … a main shaft;

550 … … stirring blade; 550a … … stirring blade; 550b … … stirring blade;

550c … … stirring blade; 550d … … stirring blade; 550e … … stirring blade;

550f … … stirring blade; 550g … … stirring blade; a stirring blade of 550h … …;

550i … … stirring blade; 550j … … stirring blade; 554 … … a vent hole;

556 … … projection; 558 … … a bearing portion; 560 … … a support portion;

562 … … a fixed part; 564 … … support the body portion; 564a … … support a substrate;

564b … … through holes; 564c … … first retaining feature;

564d … … second retention feature; 564e … … elastomer; 564f … … screw;

566 … … screws; 567 … … a gasket; 570 … … driving part; 572 … … Gear;

574 … … brake; 575 … … rotating the plate; 575a … … rotating the plate;

575b … … rotating the plate; 576 … … hydraulic cylinders; 576a … … hydraulic cylinders;

576b … … hydraulic cylinder; 577 … … spherical bearing; 577a … … spherical bearing;

577b … … spherical bearing; 578a … … is connected to the shaft; 579 … … spherical bearing;

579a … … spherical bearing; 579b … … spherical bearing; 580a … ….

Detailed Description

Next, silo 20, silo 220, silo 320, silo 420 and silo 520 will be described in detail as an example of the embodiment of the present invention. The embodiments and the drawings described below are merely examples of a part of the embodiments of the present invention, and are not intended to limit the configurations thereof, and may be modified as appropriate within a range not departing from the spirit of the present invention. In the drawings, corresponding components are denoted by the same or similar reference numerals.

Example 1

As shown in fig. 1, a silo 20 according to a first embodiment of the present invention includes: a main body part 30 including a storage part 32 for storing a storage object on an upper side; a main shaft 40 having a part penetrating the bottom surface of the housing 32 and provided with a plurality of stirring blades 50, air supply blades 60, and auxiliary supply blades 70; a bearing portion 80 rotatably supporting the main shaft 40 from below; and a driving unit 90 for rotating the main shaft 40. The silo 20 rotates the main shaft 40 by the driving part 90, and stirs the contents stored in the storage part 32 by rotating the stirring blade 50, the air supply blade 60, and the auxiliary supply blade 70, which will be described later, provided in the main shaft 40 in accordance with the rotation of the main shaft 40. At this time, since the main shaft 40, the first shaft portion 42, the second shaft portion 44 and the third shaft portion 46 are connected to each other, the parts can be reduced in size and easily transported when transporting the silo 20 before assembly, as compared with the case where the main shaft 40 is a single part. In addition, the size is also easily increased.

As shown in fig. 1, the main body 30 has a housing portion 32 for housing the stored items, and a main shaft 40, a part of which penetrates through the bottom surface of the housing portion 32, is rotatably supported by a bearing portion 80. The housing portion 32 is formed with a heat insulating layer having a heat insulating material and a heat insulating layer having a heat insulating material, respectively, from the inside between the inner wall surface and the outer wall surface of the housing portion 32. Therefore, even when the temperature of the storage unit 32 differs greatly from the outside air temperature, the temperature change of the storage unit 32 can be reduced. In this case, since the heat blocking layer is provided on the outer side of the heat insulating layer, the influence of the external environment such as direct sunlight can be reduced by the heat blocking layer, and the temperature change of the storage unit 32 can be reduced as compared with the case where the heat insulating layer is located on the outer side.

As shown in fig. 1, the main shaft 40 is formed as a substantially cylindrical shaft by connecting a first shaft 42, a second shaft 44, and a third shaft 46 to each other. Specifically, the lower side surface of the first shaft portion 42 and the upper side surface of the second shaft portion 44 are respectively provided with a spiral groove, and the first shaft portion 42 and the second shaft portion 44 are connected by respectively fixing the first connecting plate 47 and the second connecting plate 49 with 4 screws 47c in a state where the first connecting plate 47 and the first shaft portion 42 described later are screwed and the second connecting plate 49 and the second shaft portion 44 described later are screwed. In this way, by fixing the first connection plate 47 and the second connection plate 49 with screws in a state where the first shaft portion 42 is screwed with the first connection plate 47 and the second shaft portion 44 is screwed with the second connection plate 49, the possibility of a step difference occurring on the outer surfaces of the first shaft portion 42 and the second shaft portion 44 is reduced in advance, and the connection can be made in a straight line. Further, since the first connecting plate 47 and the second connecting plate 49 have a wide contact surface, the possibility of the first shaft portion 42 and the second shaft portion 44 being disassembled can be reduced in advance when the main shaft 40 is rotated. Further, the main shaft 40 can be divided into the first shaft portion 42, the second shaft portion 44, and the third shaft portion 46 for conveyance when conveyed, so that the main shaft 40 can be easily conveyed even if it is long and large, and the stirring blades 50 can be rotated even if the housing 32 having a size capable of housing a large amount of stored objects is provided because they are firmly fixed when connected to each other.

Here, the structure of the first connection plate 47 will be described in more detail with reference to fig. 3. As shown in fig. 3, the first connection plate 47 is a disk-shaped member having a through hole 47a at the center, and has screw holes 47b that penetrate through the through hole 47a at respective positions in the upper, lower, left, and right directions. A spiral groove that can be screwed with the first shaft portion 42 is provided on the side surface of the through hole 47a in the center; the first connecting plate 47 is screwed to a spiral groove provided on the surface of the lower portion of the outer side surface of the first shaft portion 42. In this state, the upper surface of the second link plate 49 screwed to the second shaft portion 44 and the lower surface of the first link plate 47 are brought into contact with each other, and screws 47c are inserted into the screw holes 47b, respectively, to be fixed to each other. Therefore, the first and second connection plates 47 and 49 can be strongly fixed. Further, by strongly fixing the first connecting plate 47 and the second connecting plate 49, the first shaft portion 42 and the second shaft portion 44 can be strongly fixed. The second shaft portion 44 and the third shaft portion 46 are connected to the first connecting plate 47 and the second connecting plate 49 by the third connecting plate 147 screwed to the second shaft portion 44 and the fourth connecting plate 149 screwed to the third shaft portion 46, and therefore, the description thereof is omitted.

As shown in fig. 1 and 2, the main shaft 40 is provided with a first stirring blade 50a, a second stirring blade 50b, a third stirring blade 50c, a fourth stirring blade 50d, a first air supply blade 60a, a second air supply blade 60b, a fifth stirring blade 50e, a sixth stirring blade 50f, a first auxiliary supply blade 70a, a second auxiliary supply blade 70b, a third air supply blade 60c, and a fourth air supply blade 60d in this order from the upper side; inside the main shaft 40, a hollow portion 41 is provided. The hollow portion 41 is connected to an air supply portion not shown and a line not shown, and air is supplied from the air supply portion not shown. The main shaft 40 is rotated clockwise by a driving unit 90, which will be described later, and rotates the stirring blade 50, the air supply blade 60, and the auxiliary supply blade 70 in accordance with the rotation of the main shaft 40, thereby stirring the stored material stored in the storage unit 32.

A first stirring blade 50a, a second stirring blade 50b, a third stirring blade 50c, a fourth stirring blade 50d, a fifth stirring blade 50e, and a sixth stirring blade 50f (hereinafter referred to as "stirring blades 50"), as shown in fig. 4, having a blade member with an inclined surface 52 inclined upward on the rotation direction side of the main shaft 40; when the stirring blade 50 rotates in a state of being buried in the stored object, the stored object is pressed upward along the inclined surface. Since the stored material is urged downward by gravity, the possibility of the stored material being pushed by gravity can be reduced by urging the material upward by the stirring blade 50 and stirring the material.

The first air supply blade 60a, the second air supply blade 60b, the third air supply blade 60c, and the fourth air supply blade 60d (hereinafter referred to as "air supply blades 60") have blade members having a substantially right-angled triangular shape in cross section of the inclined surface 62 inclined upward in the rotational direction of the main shaft 40, and have the same length as the stirring blades 50, as shown in fig. 5. Furthermore, the plate-like parts on the surface are individually welded to form a hollow; and setting: a hollow pipe 64 through which air supplied from the hollow portion 41 (see fig. 6) passes; and a plurality of vent holes 66 on the rear side with respect to the rotational direction of the main shaft 40. One end of the air supply blade 60 is welded to the side surface of the main shaft 40, and the hollow portion 41 of the main shaft 40 and a hollow tube 64 (see fig. 6) are connected through a vent hole 48 provided in the side surface of the main shaft 40, and the air supplied from the hollow portion 41 is supplied to the hollow tube 64 through the vent hole 48. Next, the air supplied to the hollow pipe 64 is supplied to the inside of the housing portion 32 through the plurality of vent holes 66. At this time, since the vent hole 66 is provided on the rear side with respect to the rotational direction of the air supply blade 60, the possibility that the stored material stored in the storage portion 32 enters the inside of the air supply blade 60 through the vent hole 66 can be reduced in advance along with the rotation of the air supply blade 60. Further, since the objects stored in the storage section 32 are just stirred at the time of rotation of the air supply blade 60 with respect to the rear side in the rotation direction of the air supply blade 60, the objects are stirred, and air easily enters between the objects. Here, fig. 5 is an explanatory view showing a rear side and a cross section of the air supply blade 60; fig. 6 is an enlarged view of a portion a in fig. 1.

As shown in fig. 2, the first stirring blade 50a and the second stirring blade 50b, the third stirring blade 50c and the fourth stirring blade 50d, the fifth stirring blade 50e and the sixth stirring blade 50f, the first air supply blade 60a and the second air supply blade 60b, and the third air supply blade 60c and the fourth air supply blade 60d are provided in pairs at positions facing the main shaft 40, respectively; the first stirring blade 50a is provided at a position where the third stirring blade 50c rotates about 30 ° in the rotation direction (clockwise direction) about the main shaft 40 in a plan view. Similarly, the following are respectively set: a third agitating blade 50c that rotates the first air supply blade 60a about 30 ° in the rotational direction about the main shaft 40; a first air supply blade 60a at a position where the fifth stirring blade 50e rotates about 30 ° in the rotation direction around the main shaft 40; the fifth stirring blade 50e is rotated about 30 ° in the rotation direction about the main shaft 40 by the third air supply blade 60 c. Therefore, since the stirring device is disposed at a predetermined interval, the objects stored in the storage section 32 can be uniformly stirred as the main shaft 40 rotates.

The first auxiliary supply blade 70a and the second auxiliary supply blade 70b (hereinafter referred to as "auxiliary supply blades 70") are provided at positions directly above the third air supply blade 60c and the fourth air supply blade 60d, respectively, at positions facing the main shaft 40. At this time, the following are respectively set: the first auxiliary supply blade 70a is at a position where the third air supply blade 60c rotates by about 90 ° in the rotation direction (clockwise direction) about the main shaft 40; the second auxiliary supply blade 70b is rotated by about 90 ° in the rotation direction (clockwise direction) about the main shaft 40 at the fourth air supply blade 60 d.

As shown in fig. 7, the auxiliary supply blade 70 has a blade-like member having a cross section of a slope 72 inclined upward in the rotational direction of the main shaft 40 in a substantially right triangle shape, and has a length equal to or less than about half of the length of the air supply blade 60. In addition, the plate-shaped parts on the surface are welded separately to form a hollow; a hollow pipe 74 is provided through which air supplied from the hollow portion 41 (see fig. 6) passes; and a plurality of vent holes 76 on the rear side with respect to the rotational direction of the main shaft 40. One end side of the auxiliary supply blade 70 is welded to the side surface of the main shaft 40, and the hollow portion 41 of the main shaft 40 and the inside (hollow portion) of the auxiliary supply blade 70 are connected through a vent 48 provided on the side surface of the main shaft 40 (see fig. 6), and the air supplied to the hollow portion 41 is supplied to the inside of the auxiliary supply blade 70 through the vent 48. Next, the air supplied to the inside of the auxiliary supply blade 70 is supplied to the inside of the housing 32 through the plurality of vent holes 76. At this time, since the vent hole 76 is provided on the rear side with respect to the rotational direction of the auxiliary supply blade 70, the possibility that the stored material stored in the storage section 32 enters the inside of the auxiliary supply blade 70 through the vent hole 76 can be reduced in advance in accordance with the rotation of the auxiliary supply blade 70. Further, since the objects stored in the storage section 32 are just stirred at the time of rotation of the auxiliary supply blade 70 with respect to the rear side in the rotation direction of the auxiliary supply blade 70, the objects are stirred, and air is likely to enter between the objects. Here, fig. 7 is an explanatory view of a rear side and a cross section of the auxiliary supply blade 70.

As shown in fig. 1, the bearing portion 80 is a well-known bearing that supports the main shaft 40 from below, and various bearings can be used as long as the bearing portion can support the main shaft 40. For example, the bearing may be a ball bearing of a ball bearing or ball bearing bearings, a roller bearing of a cylindrical roller or roller bearings, a sliding bearing, a magnetic bearing, a fluid bearing, or the like.

A driving unit 90, as shown in fig. 8, including a gear 92, a brake 94, a pair of rotating plates 95a and 95b (hereinafter referred to as "rotating plates 95"), a hydraulic cylinder 96a and a hydraulic cylinder 96b (hereinafter referred to as "hydraulic cylinder 96"), and a hydraulic driving device having a ratchet mechanism for rotating the spindle 40 in the clockwise direction; wherein, the gear 92 is fixed on the side surface of the main shaft 40; a brake 94 for controlling the rotation of the gear 92 in one direction; rotating plates 95 located on both sides of the stopper 94; the hydraulic cylinders 96 are respectively connected to the rotating plates 95. One side of the hydraulic cylinder 96 is connected to the rotating plate 95 via a connecting shaft 98a supported by a spherical bearing 97 a; the other side is connected to the body 30 through a connecting shaft 100a supported by the spherical bearing 99 a. Since both end sides of the hydraulic cylinder 96 are axially stopped by the spherical bearings 97a and 99a in this manner, even if the rotation axis of the main shaft 40 is tilted due to factors such as not being strictly in a straight line when the first shaft portion 42, the second shaft portion 44, and the third shaft portion 46 are connected, the hydraulic cylinder 96 is tilted according to the tilt of the rotation axis of the main shaft 40, and the spherical bearings 97a and 99a are axially stopped in a state where the hydraulic cylinder 96 is tilted. Therefore, even if the rotation axis of the spindle 40 is slightly inclined, the spindle 40 can be rotationally driven.

Here, the operation of the driving unit 90 is described in more detail with reference to fig. 9. Here, fig. 9 is an explanatory diagram for explaining the operation of the driving section 90; fig. 9(a) shows a state in which the hydraulic cylinder 96a is contracted; fig. 9(B) shows a state in which the hydraulic cylinder 96a is extended. The drive unit 90 synchronizes the extension of the hydraulic cylinder 96a and the extension of the hydraulic cylinder 96b, and when the hydraulic cylinder 96a extends and the hydraulic cylinder 96b extends, the rotating plate 95 rotates clockwise, and the spindle 40 and the gear 92 are rotated in accordance with the rotation of the rotating plate 95. At this time, the stopper 94, which is located upward along the gear 92, does not restrict the rotation of the gear 92 by moving obliquely along the gear 92. On the other hand, when the hydraulic cylinder 96a contracts and the hydraulic cylinder 96b contracts, the rotating plate 95 rotates counterclockwise, but the gear 92 is restricted from rotating counterclockwise by the stopper 94 locking the gear 92. Accordingly, the main shaft 40 is rotated clockwise by the telescopic hydraulic cylinder 96.

Both ends of the hydraulic cylinder 96a and both ends of the hydraulic cylinder 96b are positioned in a state supported by the spherical bearings 97a and 99a, and the spherical bearings 97b and 99b, respectively. Therefore, when the rotation axis of the main shaft 40 is tilted due to a seizure failure or the like, the hydraulic cylinder 96 is tilted in accordance with the tilt of the rotation axis of the main shaft 40, and the hydraulic cylinder 96 is supported by the spherical bearings 97 and 99 in a tilted state. Therefore, since the hydraulic cylinder 96 is supported by the spherical bearing 97 and the spherical bearing 99 while allowing the tilt of the main shaft 40, the tilt of the hydraulic cylinder 96 allows the main shaft 40 to be rotated even when the rotation axis of the main shaft 40 is slightly tilted.

According to the silo 20 of the present embodiment described in detail above, when the main shaft 40 rotatably provided in the housing 32 rotates, the plurality of stirring blades 50, the air supply blade 60, and the auxiliary supply blade 70 rotate along with the rotation of the main shaft 40, and the housing 32 supplies air and stirs the contents. In this case, the main shaft 40 is formed by connecting 3 pieces of the first shaft 42, the second shaft 44, and the third shaft 46, and thus the main shaft 40 is easily transported. In other words, labor in transporting the large silo 20 can be reduced. Further, since the heat insulating layer is provided on the outer surface of the housing portion 32 on the outer side of the outer wall surface and the heat insulating layer is provided on the outer side of the heat insulating layer, the temperature inside the housing portion 32 can be maintained at a constant level easily even when the temperature difference between the housing portion 32 and the outside air temperature is large. The effect of the outside air temperature is increased as the storage part 32 is increased, and therefore, this effect is applied to the large silo 20, and the effect is large.

Further, since the first shaft portion 42 and the second shaft portion 44 are fixed by fixing the first connection plate 47 screwed to the first shaft portion 42 and the second connection plate 49 screwed to the second shaft portion 44 to each other with the screws 47c, the first shaft portion 42 and the second shaft portion 44 are strongly fixed, and the outer wall surface of the first shaft portion 42 and the outer wall surface of the second shaft portion 44 can be fixed in a flat state (i.e., in a straight line). Therefore, even in the case of a large silo 20, the stirring blade 50 and the like can be rotated by the rotational force of the driving part 20, and a large amount of the stored material can be stirred.

Further, since the air supply blade 60 is provided with the vent hole 66 and the auxiliary supply blade 70 is provided with the vent hole 76, the air supplied from the air supply portion can be supplied to the housing portion 32. At this time, since the vent hole 66 and the vent hole 76 are provided on the rear side in the relative rotation direction, even if the stored material stored in the storage section 32 is pushed out by its own weight, the rotation of the air supply blade 60 and the auxiliary supply blade 70 is released, so that the air is easily supplied to the storage section 32. The larger the number of large silos 20 storing the stored material, the more likely the stored material is to be pushed out and filled, and therefore, the effect of applying the present invention to large silos 20 is large.

Further, since both end sides of the hydraulic cylinder 96 for rotating the main shaft 40 are axially stopped by the spherical bearings 97a and 99a, even if the rotation shaft of the main shaft 40 is inclined due to factors such as not being strictly in a straight line when the first shaft portion 42, the second shaft portion 44, and the third shaft portion 46 are connected, the hydraulic cylinder 96 is inclined in accordance with the inclination of the rotation shaft of the main shaft 40, and the spherical bearings 97a and 99a are axially stopped in a state where the hydraulic cylinder 96 is inclined. Therefore, even when the spindle 40 is formed by connecting a plurality of components, the spindle 40 can be rotationally driven without performing strict positioning of the individual components.

Example 2

Next, the silo 220 will be described in detail as an example of the second embodiment of the present invention. The embodiments and the drawings described below are intended to illustrate a part of the embodiments of the present invention, and the present invention is not limited to these configurations, and may be appropriately modified within a range not departing from the gist of the present invention. In the drawings, corresponding components are denoted by the same or similar reference numerals.

As shown in fig. 10, the silo 220 includes: a housing 222, a main shaft 240, three pairs of stirring blades 250, two pairs of air supply blades 260, and a pair of auxiliary supply blades 270; the storage section 222 stores powder on the upper side; a main shaft 240, a part of which is arranged to penetrate the bottom surface of the receiving part 222 and can rotate; a stirring blade 250 that rotates with the rotation of the main shaft 240; an air supply blade 260 that rotates with the rotation of the main shaft 240; the auxiliary supply blade 270 rotates along with the rotation of the main shaft 240. In the silo 220, the main shaft 240 is rotated in a clockwise direction (in the direction of an arrow in fig. 11) by a driving mechanism (not shown), and the stirring blade 250, the air supply blade 260, and the auxiliary supply blade 270 are rotated in accordance with the rotation of the main shaft 240 to stir the contents stored in the storage portion 222. The diameter/height of silo 220 is preferably 0.5 or more and 2.0 or less, and may be about 0.63. Therefore, sufficient air can be supplied into the storage section 222, and sufficient fermentation can be promoted.

As shown in fig. 10 and 11, the main shaft 240 is provided with hollow wing-shaped parts of a first stirring blade 250a, a second stirring blade 250b, a third stirring blade 250c, a fourth stirring blade 250d, a first air supply blade 260a, a second air supply blade 260b, a fifth stirring blade 250e, a sixth stirring blade 250f, a first auxiliary supply blade 270a, a second auxiliary supply blade 270b, a third air supply blade 260c, and a fourth air supply blade 260d in this order from the upper side. The hollow portion 254 of the main shaft 240 is connected to a supply portion 290, which will be described later, via a line, not shown, and air is supplied from the supply portion 290. A drive mechanism, not shown, is provided below the main shaft 240, and the main shaft 240 is rotatable by the drive mechanism.

The first stirring blade 250a, the second stirring blade 250b, the third stirring blade 250c, the fourth stirring blade 250d, the fifth stirring blade 250e, and the sixth stirring blade 250f (hereinafter also referred to as "stirring blades 250") are blade members having a substantially triangular cross section with an inclined surface inclined upward on the rotation direction side of the main shaft 240, and when the stirring blades 250 are rotated while being buried in the stored object, the stored object can be pressed upward along the inclined surface. Since the stored objects are biased downward by gravity, the possibility that the stored objects are pushed by gravity can be reduced by stirring the stored objects while biasing the stored objects upward by the stirring blade 250. In other words, when air is supplied from the supply portion 290, air is easily supplied to the space between the stored object and the stored object.

The first air supply blade 260a, the second air supply blade 260b, the third air supply blade 260c, and the fourth air supply blade 260d (hereinafter also referred to as "air supply blades 260") are blade members having a cross-sectional shape of a right triangle having an inclined surface 262 inclined upward on the rotation direction side of the main shaft 240 as shown in fig. 13, and have the same length as the stirring blade 250. The plate-like members on the front surface are each hollow by welding, and a plurality of vent holes 266 are provided on the rear side with respect to the rotational direction of the main shaft. One end of the air supply blade 260 is welded to the side surface of the main shaft 240, and the hollow portion 254 of the main shaft 240 and the inside (hollow portion) of the air supply blade 260 are connected by a vent 264 provided on the side surface of the main shaft 240 (see fig. 12), and the air supplied from the hollow portion 254 can be supplied to the inside of the air supply blade 260 through the vent 264. Next, the air supplied to the inside of the air supply blade 260 can be supplied to the inside of the housing portion 222 through the plurality of vent holes 266. At this time, since the ventilation hole 266 is provided on the rear side with respect to the rotation direction of the air supply blade 260, the possibility that the stored material stored in the storage section 222 intrudes into the inside of the air supply blade 260 through the ventilation hole 266 can be reduced in advance along with the rotation of the air supply blade 260. Further, since the objects stored in the storage section 222 are just stirred at the time of rotation of the air supply blade 260 with respect to the rear side in the rotation direction of the air supply blade 260, the objects are in a stirred state, and air is easily supplied between the objects. Note that, part a in fig. 12 and 10 is an enlarged view, and fig. 13 is an explanatory view showing a rear side and a cross section of the air supply vane 260.

As shown in fig. 11, the first stirring blade 250a and the second stirring blade 250b, the third stirring blade 250c and the fourth stirring blade 250d, the fifth stirring blade 250e and the sixth stirring blade 250f, the first air supply blade 260a and the second air supply blade 260b, and the third air supply blade 260c and the fourth air supply blade 260d are provided in pairs at positions facing the main shaft 240, respectively, and the first stirring blade 250a is provided at a position where the third stirring blade 250c rotates about 30 ° in the rotation direction (clockwise direction) about the main shaft 240 in a plan view. Similarly, the following are respectively set: a third agitating blade 250c that rotates the first air supplying blade 260a about 30 ° in the rotational direction around the main shaft 240; a first air supply blade 260a at a position where the fifth agitating blade 250e rotates about 30 ° in the rotation direction around the main shaft 240; the fifth stirring blade 250e is rotated about 30 ° in the rotation direction about the main shaft 240 at the third air supply blade 260 c. Therefore, since the stirring device is disposed at a predetermined interval, the objects stored in the storage section 222 can be uniformly stirred as the main shaft 240 rotates.

The first auxiliary supply vane 270a and the second auxiliary supply vane 270b (hereinafter also referred to as "auxiliary supply vanes 270") are provided at positions directly above the third air supply vane 260c and the fourth air supply vane 260d, respectively, at positions facing the main shaft 240. At this time, the following are respectively set: the first auxiliary feeding blade 270a is located at a position where the third air feeding blade 260c is rotated by about 90 ° in the rotational direction around the main shaft 240; the second auxiliary feeding blade 270b is located at a position where the fourth air feeding blade 260d rotates by about 90 ° in the rotational direction (clockwise direction) about the main shaft 240.

As shown in fig. 14, the auxiliary supply blade 270 is a blade-like component having a substantially right-angled triangular cross-section with an inclined surface 272 inclined upward on the rotational direction side of the main shaft 240, and has a length of about half or less of the length of the air supply blade 260. Further, the plate-like members on the surface are respectively welded to form a hollow, and a plurality of vent holes 276 are provided on the rear side with respect to the rotational direction of the main shaft. One end side of the auxiliary supply blade 270 is welded to the side surface of the main shaft 240, and the hollow portion 254 of the main shaft 240 and the inside (hollow portion) of the auxiliary supply blade 270 are connected by a vent hole 274 provided in the side surface of the main shaft 240 (see fig. 12), and air supplied from the hollow portion 254 can be supplied to the inside of the auxiliary supply blade 270 through the vent hole 274. Then, the air supplied from the inside of the auxiliary supply blade 270 can be supplied to the inside of the housing portion 222 through the plurality of vent holes 276. At this time, since the vent hole 276 is provided on the rear side with respect to the rotational direction of the auxiliary supply blade 270, the possibility that the stored material stored in the storage section 222 intrudes into the inside of the auxiliary supply blade 270 through the vent hole 276 with the rotation of the auxiliary supply blade 270 can be reduced in advance. Further, since the objects stored in the storage section 222 are just stirred at the time of rotation of the auxiliary supply blade 270 with respect to the rear side in the rotation direction of the auxiliary supply blade 270, the objects are in a stirred state, and air is easily supplied between the objects. Note that fig. 14 is an explanatory diagram showing a rear side and a cross section of the auxiliary supply blade 270.

The supply section 290 is a well-known air pump. The supply unit 290 is connected to the lower side of the hollow portion 254 of the main shaft 240 via a line, not shown, to supply air to the hollow portion 254 of the main shaft 240. The pressure of the air supplied from the supply unit 290 was set to 0.2kg/cm²To 3kg/cm²Air pressure is preferred. The pressure is higher than 0.2kg/cm²The air pressure can be sufficient to supply air to the storage section 222. In addition, the pressure is less than 3kg/cm²The possibility of excessive supply can be reduced by the air pressure.

In the second embodiment, the length of the auxiliary supply blade 270 is equal to or less than half the length of the air supply blade 260, but the length of the auxiliary supply blade 270 is not limited to equal to or less than half the length of the air supply blade 260, and various lengths may be selected as long as the length is shorter than the length of the air supply blade 260. In any case, the same effects as those of the above embodiment can be obtained.

According to the silo 220 of the second embodiment described in detail above, the contents stored in the storage portion 222 are stirred by the plurality of stirring blades 250 and the air supply blade 260 rotating along with the rotation of the main shaft 240. At this time, the plurality of vent holes 266 provided in the air supply blade 260 supply the air supplied from the supply unit 290 into the housing unit 222 through the vent holes 266. In this way, by supplying air while stirring the stored material stored in the storage section 222, air can be supplied to the entire storage section 222.

Further, since the auxiliary supply blade 270 has a length equal to or less than half the length of the air supply blade 260, the auxiliary supply blade 270 can be rotated by a smaller amount of labor than the air supply blade 260 to supply air to the entire housing portion 222.

Further, since the air supply blades 260 are provided in pairs below the stirring blades 250 and the auxiliary supply blade 270 is provided at a position directly above the air supply blade 260 located at the lowermost side, a large amount of air can be supplied below the storage portion 222.

Further, since the air supply blade 260 and the auxiliary supply blade 270 are provided at positions substantially perpendicular to each other, the air supplied from the supply portion 290 to the housing portion 222 can be relatively uniformly approximated.

Next, since the interval between the ventilation holes 266 adjacent to each other is formed to be narrower as the distance from the main shaft 240 increases, the air supplied from the supply unit 290 to the housing unit 222 can be relatively uniformly approached without being affected by the position from the main shaft 240.

Example 3

Next, the silo 320 will be described in detail as an example of the third embodiment of the present invention. The embodiments and the drawings described below are intended to illustrate a part of the embodiments of the present invention, and are not intended to limit the structures of the embodiments, and may be modified as appropriate without departing from the scope of the present invention. In the drawings, corresponding components are denoted by the same or similar reference numerals.

As shown in fig. 15, silo 320 includes: the housing 322, the main shaft 340, and 5 pairs of stirring blades 350 (stirring blades 350a to 350 j); among them, the containing part 322, the upper side contains the containing object; a main shaft 340, a part of which is arranged to penetrate the bottom surface of the accommodating part 322 and can rotate; the stirring blade 350 rotates with the rotation of the main shaft 340. In the silo 320, the main shaft 340 is rotated in a clockwise direction (in the direction of an arrow in fig. 16) by a driving mechanism (not shown), and the stirring blade 350 is rotated in accordance with the rotation of the main shaft 340 to stir the contents stored in the storage 322.

As shown in fig. 15, the main shaft 340 includes hollow wing-shaped members, in order from the upper side, of a stirring blade 350a, a stirring blade 350b, a stirring blade 350c, a stirring blade 350d, a stirring blade 350e, a stirring blade 350f, a stirring blade 350g, a stirring blade 350h, a stirring blade 350i, and a stirring blade 350 j. The stirring blades 350a and 350b, the stirring blades 350c and 350d, the stirring blades 350e and 350f, the stirring blades 350g and 350h, and the stirring blades 350i and 350j are paired and arranged at opposing positions around the main shaft 340 as shown in fig. 16. A driving mechanism, not shown, is provided below the main shaft 340, and as the main shaft 340 is rotated by the driving mechanism, the stirring blade 350 is rotated, and the accommodated substance accommodated in the accommodating portion 322 can be stirred.

The stirring blade 350 has an inclined surface 352 inclined upward on the rotation direction side of the main shaft 340, and is a blade component in which plate-like components are welded to form a hollow substantially triangular cross section, and when the stirring blade 350 rotates while being buried in the stored object, the stored object can be pressed upward along the inclined surface 352 and rotated. Therefore, the possibility of pushing and filling the stored object can be reduced in advance, the pushed and filled stored object can be released, and the possibility of pushing and filling the stored object can be reduced in advance. In other words, since the possibility that the contents are pushed out is reduced, the contents are easily taken out.

As shown in fig. 17, the stirring blade 350i and the stirring blade 350j positioned on the lowermost side of the stirring blades 350 are provided with a plurality of claw portions 354 on a slope 352 and a plurality of ventilation holes 356 on the rear side in the rotation direction with respect to the main shaft. Fig. 17 is a schematic explanatory view for explaining the structure of the stirring blade 350j, and shows the front side, the rear side, and the cross section of the stirring blade 350j, respectively. In fig. 17, the stirring blade 350j is shown as an example, and the stirring blade 350i is the same as the stirring blade 350j, and therefore, the description thereof is omitted.

As shown in fig. 17, the claw portions 354 are plate-like members having a substantially rectangular parallelepiped shape, and are welded to each other at an angle inclined by about 15 ° with respect to the side surface of the stirring blade 350 j. Further, the claw portions 354 are provided on the other end side of the stirring blade 350j at the intermediate position between the main shaft 340 side and the other end side, and therefore can contact the stored object stored at a position distant from the main shaft 340. Since the distance at which the objects stored in the storage section 322 at a position far from the main shaft 340 are stirred by the stirring blade 350 is longer than the distance at which the objects stored at a position near to the main shaft 340, the objects stored at a position near to the main shaft 340 are more likely to be pushed out. Therefore, by providing the claw portion 354 at a position of the stirring blade 350j distant from the main shaft 340, the claw portion 354 can be positioned at a position where it is easy to push and fill, and the stored material that is gradually pushed and filled can be easily loosened. In other words, the claw portions 354 are less necessary to be provided at positions closer to the main shaft 340 where the stirring blades 350 pass through at shorter intervals than positions farther from the main shaft 340. The angle of the claw portion 354 is not limited to about 15 °, and may be appropriately selected according to the size of the housing portion 322, the properties of the housing, and the like.

The vent holes 356 are through holes, supply air supplied from a supply portion, not shown, to the hollow portion of the stirring blade 350j through the hollow portion of the main shaft 340 to the housing portion 322, and are provided plural on the rear side with respect to the rotation direction of the stirring blade 350. In this way, by supplying air through the vent hole 356 inside the storage section 322, fermentation of the stored item is promoted and the possibility of the stored item being pushed out can be reduced. Further, since the objects stored in the storage section 322 are just being stirred at the rear side with respect to the rotation direction of the stirring blade 350 when the stirring blade 350 rotates, the objects are in a stirred state, and air is easily supplied between the objects. Further, since the vent hole 356 is provided on the rear side with respect to the rotational direction of the stirring blade 350, the possibility that the object stored in the storage section 322 enters the inside of the stirring blade 350j through the vent hole 356 can be reduced in advance as the stirring blade 350 rotates.

In the third embodiment, the claw portion 354 has a substantially square plate shape, but this is merely an example, and the shape is not limited thereto, and various shapes are possible. The claw portion 354 is provided on the upper side of the lower side of the stirring blade 350j, but is not limited thereto, and may be any position as long as it is a position between the stirring blade 350j and the bottom surface of the housing 322. By bringing the stirring blade 350j close to the vicinity of the bottom surface of the housing 322, the stored material in the vicinity of the bottom surface of the housing 322 can be released, and the possibility of the stored material being pushed out is further reduced.

The claw portion 354 is provided on the other end side from the intermediate position between the main shaft 340 side and the other end side of the stirring blade 350j, but may be provided on the main shaft 340 side from the intermediate position between the other end side. In this case, the same effects as those of the above embodiment can be obtained.

Further, the claw portions 354 and the ventilation holes 356 are provided in the stirring blade 350j, but may be provided in any or all of the other stirring blades 350. In either case, the same effects as those of the above embodiment can be obtained.

According to the silo 320 of the third embodiment described in detail above, the plurality of stirring blades 350 are rotated along with the rotation of the main shaft 340 rotatably provided in the housing 322, and stir the contents housed in the housing 322. At this time, since the plurality of claw portions 354 are provided in the stirring blade 350j, the plurality of claw portions 354 also rotate with the rotation of the stirring blade 350j, and the stored material is stirred. Therefore, the possibility of the stored object being pushed out can be reduced in advance as compared with the case without the claw portion 354. Therefore, the stored material can be easily taken out from the storage section 322.

Further, since the plurality of claw portions 354 are provided on the stirring blade 350j positioned on the lowermost side, and the claw portions 354 are provided on the upper side of the bottom surface of the stirring blade 350j, the accommodated substance positioned on the lower side of the accommodating portion 322 and thus easily pushed and filled can be stirred, and since the claw portions 354 are provided on the upper side of the bottom surface of the stirring blade 350j, the possibility that the claw portions 354 and the accommodating portion 322 are damaged due to contact with the bottom surface of the accommodating portion 322 can be prevented in advance.

Further, the claw portion 354 may be provided on the other end side of the intermediate position between the main shaft 340 side and the other end side of the stirring blade 350 j. Therefore, the claw portions 354 can pass through positions distant from the main shaft 340, that is, positions where the intervals through which the stirring blades 350 pass when the stirring blades 350 rotate are long. Since the stored material is easily pushed and filled at this position, the possibility of the stored material being pushed and filled can be reduced by providing the claw portion 354 on the other end side of the intermediate position between the main shaft 340 side and the other end side.

Further, since the stirring blade 350j has the vent hole 356 on the rear side in the relative rotational direction and the claw portion 354 is provided on the front side in the relative rotational direction, the first thing to be pushed and filled is released by the claw portion 354 in accordance with the rotation of the stirring blade 350j, and air is supplied from the vent hole 356 to the space generated in accordance with the rotation of the claw portion 354, whereby the possibility of pushing and filling of the thing to be pushed and filled can be further reduced.

Example 4

Next, the silo 420 will be described in detail as an example of the fourth embodiment of the present invention. The embodiments and the drawings described below are intended to illustrate a part of the embodiments of the present invention, and the present invention is not limited to these configurations, and may be appropriately modified within a range not departing from the gist of the present invention. Fig. 18 and 19 are schematic views showing the structure of the silo 420, and fig. 20 is a partial enlarged view of the bottom of the housing 422, which is around the spherical inner wheel 462 (portion a in fig. 18) supporting the spindle 440 from the side. In the drawings, corresponding components are denoted by the same or similar reference numerals.

As shown in fig. 18, the silo 420 includes: the housing portion 422, the main shaft 440, the bearing portion 480, the support portion 460, and the supply portion 490; wherein, the containing part 422 contains powder on the upper side; a main shaft 440 having a plurality of stirring blades 450, a part of which penetrates the bottom surface of the receiving portion 422; a bearing section 480 rotatably supporting the main shaft 440 from below; a support part 460 rotatably supporting the main shaft 440 from a lateral direction; the supply unit 490 supplies air to the housing unit 422 (see fig. 20). The silo 420 rotates the main shaft 440 by a drive mechanism not shown, and rotates the main shaft 440 with the rotation of the main shaft 440 by a plurality of stirring blades 450 provided on the main shaft 440, thereby stirring the powder stored in the storage 422.

As shown in fig. 18 and 19, the main shaft 440 is a cylindrical hollow tube in which a stirring blade 450a, a stirring blade 450b, and a stirring blade 450c … … are provided at predetermined intervals from the upper side, respectively, and a stirring blade 450j (hereinafter, also referred to as "stirring blade 450") is provided. Further, as shown in fig. 20, on the lower side surface, an O-ring 456 as a first seal member is provided on a contact surface with a spherical inner ring 462 of the support portion 460, and a first pressure sensor 458 which is a well-known pressure sensor is provided below the O-ring 456. The first pressure sensor 458 is provided in the front section of a passage 459 formed in the inner direction from the surface of the main shaft 440, and the pressure of the air supplied from the supply part 490 when the air is moved downward into the passage 459 without being sealed by the O-ring 456 for some reason is detected. In this case, since there is some abnormality in the rotation of the main shaft 440, the abnormality in the rotation of the main shaft 440 can be detected by detecting the pressure of air by the first pressure sensor 458. As shown in fig. 18, among the plurality of stirring blades 450, the stirring blade 450j disposed on the lowermost side is provided with a plurality of vent holes 450 ja. The air supplied from the supply portion 490 is supplied from the vent hole 450ja to the housing portion 422 through the hollow portion of the main shaft 440 and the through hole not shown.

As shown in fig. 18, the bearing section 480 is a well-known bearing that supports the main shaft 440 from below, and various bearings can be used as long as the bearing can support the main shaft. For example, the bearing may be a ball bearing of a ball bearing or ball bearing bearings, a roller bearing of a cylindrical roller or roller bearings, a sliding bearing, a magnetic bearing, a fluid bearing, or the like.

As shown in fig. 20, the support portion 460 is a support member for rotatably supporting the spindle 440 on a side surface of the spindle 440, and includes a base member 461 having a substantially "コ" cross section, a spherical inner wheel 462 positioned between the base member and the spindle 440, and an intermediate member 463 for supporting the spherical inner wheel 462 in an inner direction. The spindle 440 is rotatably supported by allowing the intermediate element 463 fitted into the base element 461 to restrict the movement of the spherical inner wheel 462 in a direction away from the spindle 440. The support portion 460 is provided with a first air duct 464a capable of supplying air supplied from the supply portion 490 to the surface side of the spherical inner wheel 462, between the base part 461 and the intermediate part 463, and a second air duct 464b described later. Therefore, a part of the air supplied from the supply portion 490 can be supplied to the movable portion when the main shaft 440 rotates. Further, the opening of the first air duct 464a on the side of the second air duct 464b is formed wide, and even when the relative positions of the first air duct 464a and the second air duct 464b are changed, air can be supplied to the second air duct 464b as long as a part of the wide opening communicates with each other.

Further, on the surface on the base part 461 side, there are provided: an O-ring 467 as a sealing member located further outside than the first air passage 464 a; further outboard of the O-ring 467 is a third pressure sensor 470, which is a well known pressure sensor. The third pressure sensor 470 is disposed in a further inner portion of the passage 472 formed in the inner direction from the surface of the intermediate element 463, and the pressure of the air supplied from the supply portion 490 when the air moves in the outer direction into the passage 472 without being sealed by the O-ring 467 for some reason is detected. In this case, since there is some abnormality in the relative positions of the intermediate part 463 and the base part 461, the abnormality can be detected by detecting the pressure of air with the third pressure sensor 470.

As shown in fig. 20, the side surface of the spherical inner wheel 462 on the side of the support portion 460 is substantially spherical, and movement in a direction away from the spindle 440 is restricted by the spindle 440 side of the intermediate element 463 formed in substantially the same shape. The main shaft 440 side is a member having a substantially arc-shaped cross section along the side surface of the main shaft 440, and the movement of the main shaft 440 is restricted by the intermediate member 463, whereby the main shaft 440 is rotatably positioned. The spherical inner wheel 462 is provided with a second air duct 464b capable of supplying air supplied from the supply unit 490 to the front surface side of the spindle 440. Therefore, a part of the air supplied from the supply portion 490 through the first air duct 464a is supplied between the spherical inner wheel 462 and the main shaft 440 through the second air duct 464 b. Further, the opening of the second air duct 464b on the side of the first air duct 464a is formed wide, and even when the relative positions of the first air duct 464a and the second air duct 464b are changed, the supply of air from the first air duct 464a can be received as long as a part of the wide opening communicates with each other.

In addition, the spherical inner wheel 462 is respectively provided with a second air duct 464b, an O-ring 466 and a second pressure sensor 468; wherein, the second air duct 464b penetrates from the supporting portion 460 side to the main shaft 440 side; an O-ring 466 serving as a second seal member, which is provided on the lower side of the support 460 than the second duct 464 b; the second pressure sensor 468, which is a well-known pressure sensor, is located below the O-ring 466 on the support 460 side. In this way, since the O-ring 466 is provided below the second air duct 464b, the O-ring 466 normally blocks the movement of air, and the air can be moved toward the housing 422.

The second pressure sensor 468 is provided in a further inner portion of the passage 469 formed inward from the surface of the spherical inner wheel 462, and the pressure of the air supplied from the supply portion 490 when the air moves downward into the passage 469 without being sealed by the O-ring 466 for some reason is detected. In this case, since there is some abnormality in the relative positions of the intermediate element 463 and the spherical inner wheel 462, the abnormality can be detected by detecting the pressure of air by the second pressure sensor 468.

The supply unit 490 is a well-known air pump. The supply part 490 supplies air to the receiving part 422 through the inside of the main shaft 440 and the vent hole 450ja, and simultaneously supplies air to the supporting part 460. In this way, by supplying air from the supply portion 490 to both the housing portion 422 and the support portion 460, air can be supplied to the housing portion 422 and the support portion 460 without providing a plurality of supply portions 490. The pressure of the air supplied from the supply part 490 was set to 0.2kg/cm²To 3kg/cm²Air pressure is preferred. By making the pressure higher than 0.2kg/cm²The gas pressure between the main shaft 440 and the spherical inner ring 462 or between the spherical inner ring 462 and the support 460 can reduce the possibility of powder loss from the storage 422. Furthermore, by making the pressure lower than 3kg/cm²The air pressure may reduce the possibility of the influence of the pressure of the air on the rotation of the main shaft 440 in advance.

As an example of a case where there is an abnormality in the rotation of the main shaft 440, a state in which the rotation axis of the main shaft 440 is inclined will be described with reference to fig. 21. Fig. 21 is an enlarged view of a portion around the spherical inner wheel 462, and is an explanatory view for explaining a case where there is an abnormality in the rotation of the spindle 440. As shown in fig. 21, when the rotation axis of the spindle 440 is inclined in the left direction in fig. 21, the spherical inner wheel 462 is inclined in the left direction in fig. 21 in accordance with the inclination of the spindle 440, and a gap is formed between the spherical inner wheel 462 and the receiving portion 422 side of the intermediate element 463. Even in this case, since the outer side of the spherical inner wheel 462 is spherical in shape, the main shaft 440 is supported by the intermediate part 463 so that the main shaft 440 can rotate. When a gap is formed between the spherical inner wheel 462 and the storage portion 422 side of the intermediate part 463 and the powder is to flow into the gap from the storage portion 422, the powder can be pushed back by the pressure of the air supplied from the supply portion 490 through the second air duct 464 b. Therefore, by supplying air from the supply portion 490, the possibility that the powder stored in the storage portion 422 falls downward can be reduced in advance.

In the fourth embodiment, the supply portion 490 supplies air to both the housing portion 422 and the support portion 460, but is not limited to air, and may be a gas containing an inert gas such as nitrogen or argon, or an oil-containing liquid such as lubricating oil. In this case, the same effects as those of the above embodiment can be obtained.

The supply portion 490 supplies air to both the housing portion 422 and the support portion 460, but the supply portion 490 may supply air only to the support portion 460. As such, the supply portion to the receiving portion 422 and the supply portion to the supporting portion 460 may be divided. For example, air may be supplied to the housing portion 422, oil may be supplied to the support portion 460, and different types of gas or liquid may be supplied. For example, air may be supplied to the support portion 460, and air of different pressure may be supplied to the housing portion 422. Therefore, the degree of freedom of design can be enhanced.

According to the silo 420 of the fourth embodiment described in detail above, the powder stored in the storage 422 is stirred by the plurality of stirring blades 450 rotating with the rotation of the main shaft 440. The spindle 440 is supported by the bearing 480 from below, and is supported rotatably by the support 460 through the spherical inner wheel 462 from the side surface direction. At this time, since the air from the supply part 490 is supplied between the main shaft 440 and the spherical inner wheel 462, even when a gap is formed between the main shaft 440 and the spherical inner wheel 462, if the powder accommodated in the accommodation part 422 flows into the gap, the inflow is blocked by the air supplied from the supply part 490, and the possibility of the powder flowing out can be reduced in advance.

Further, since the first air duct 464a is provided in the support portion 460, the air supplied from the supply portion 490 can be supplied between the main shaft 440 and the spherical inner wheel 462.

Further, since the main shaft 440 is provided with the O-ring 456 above the first air passage 464a, the air supplied from the first air passage 464a is blocked by the O-ring 456, and the possibility of the air moving downward can be reduced in advance in the case where the main shaft 440 rotates without abnormality.

Next, since the first pressure sensor 458 is provided below the O-ring 456 of the main shaft 440, the pressure of the air can be detected when the air moves downward from between the main shaft 440 and the spherical inner wheel 462 over the O-ring 456. In other words, a sealing anomaly caused by the O-ring 456 can be detected.

Further, a second air duct 464b is provided in the spherical inner wheel 462; and are respectively provided with: an O-ring 466 on a lower side than the second air passage 464 b; the second pressure sensor 468 is provided below the O-ring 466, so that the air supplied from the supply portion 490 can be smoothly supplied between the spherical inner wheel 462 and the base part 461, and the pressure of the air can be detected when the air moves in the outward direction from between the spherical inner wheel 462 and the base part 461 beyond the O-ring 466. In other words, a sealing anomaly caused by the O-ring 466 can be detected.

Example 5

Next, silo 520 will be described in detail as an example of a fifth embodiment of the present invention. The embodiments and the drawings described below are only for illustrating a part of the embodiments of the present invention, and are not intended to limit the configurations thereof, and may be modified as appropriate within a range not departing from the gist of the present invention. In the drawings, corresponding components are denoted by the same or similar reference numerals.

As shown in fig. 22, silo 520 includes: a main body 530 including a housing 532 for housing a housing on an upper side; a main shaft 540 having a part penetrating the bottom surface of the housing 532 and provided with a plurality of stirring blades 550; a bearing portion 558 rotatably supporting the main shaft 540 from below; a support 560 including a support main body 564 for supporting the main shaft 540 rotatably from the side and a fixing part 562 for fixing the support main body 564 to be movable (see fig. 25); and a driving unit 570 for driving the main shaft 540. In the silo 520, the main shaft 540 is rotated by the driving part 570, and the plurality of stirring blades 550 provided to the main shaft 540 are rotated in accordance with the rotation of the main shaft 540, thereby stirring the contents received in the receiving part 532. At this time, if a foreign substance or the like is present between the lowermost stirring blade 550 and the bottom surface of the housing 532, the foreign substance may be caught between the stirring blade 550 and the bottom surface of the housing 532, and a seizure failure may occur. In this case, an upward force is applied to the lowermost stirring blade 550 as the lowermost stirring blade 550 rotates, an upward force is applied to the contact point between the spindle 540 and the lowermost stirring blade 550 as the spindle 540 rotates, and the contact point of the lowermost stirring blade 550 disposed on the spindle 540 moves upward, so that the rotation axis of the spindle 540 is tilted. At this time, since the main body 530 is provided with the sensing unit 534 (see fig. 25) for detecting the vertical movement of the main shaft 540, the vertical movement of the main shaft 540 can be detected. Further, by detecting the vertical movement of the main shaft 540, the occurrence of the inclination of the rotation axis of the main shaft 540 due to the occurrence of the engagement failure or the like is detected, and the possibility of the breakage of the silo 520 can be reduced in advance. In this case, since the support body 564 moves in association with the inclination of the rotation axis of the main shaft 540, the inclination of the main shaft 540 is allowed, and the possibility of breakage of the support 560 at the time of occurrence of a snap failure can be reduced.

As shown in fig. 22, the main body 530 has a housing 532 for housing a storage, and the main shaft 540 is rotatably supported by a bearing 558 and a support 560, and a part of the main shaft 540 penetrates through a bottom surface of the housing 532. Further, the main body 530 is provided with a sensing unit 534 for detecting the vertical movement of the main shaft 540 on the side surface side of the main shaft 540 and on the upper side of the support unit 560. Therefore, when the rotation axis of the spindle 540 is inclined due to some cause such as a seizure failure, the sensor 534 can detect the vertical movement of the spindle 540. In this way, the movement of the spindle 540 is detected by the sensor unit 534, and the rotation of the rotation shaft of the spindle 540 in an inclined state is detected, so that the possibility of damage to the support unit 560 and the like accompanying the rotation of the spindle 540 can be reduced in advance.

As shown in fig. 22 and 23, the main shaft 540 is a hollow tube having a cylindrical shape, and stirring blades 550a, 550b, 550c, … …, and 550j (hereinafter, also referred to as "stirring blades 550") are provided at predetermined intervals from above. The main shaft 540 is supported at the lower end by a bearing portion 558, and the support portion 560 is supported at the lower side surface and rotated by a driving portion 570 attached between the bearing portion 558 and the support portion 560. As shown in fig. 22 and 24, the stirring blade 550i and the stirring blade 550j provided on the lowermost side of the stirring blades 550 are provided with a plurality of vent holes 554. Air supplied from an air supply unit, not shown, is supplied from the vent hole 554 to the housing 532 through a hollow portion of the main shaft 540 and a through hole, not shown. The structures of the stirring blades 550a to 550h are the same except that the vent holes 554 are not provided, and therefore, the description thereof is omitted.

As shown in fig. 22, the bearing portion 558 is a well-known bearing that supports the main shaft 540 from below, and various bearings can be used as long as the main shaft 540 can be supported. For example, the bearing may be a ball bearing of a ball bearing or ball bearing bearings, a roller bearing of a cylindrical roller or roller bearings, a sliding bearing, a magnetic bearing, a fluid bearing, or the like.

As shown in fig. 25, the supporting portion 560 supports the side surface of the main shaft 540 to rotatably support the main shaft 540, and includes a supporting main body portion 564 located on the side surface of the main shaft 540 and a fixing portion 562 for fixing the supporting main body portion 564 to be movable in the side surface direction of the main shaft 540, and the fixing portion 562 and the supporting main body portion 564 are fixed by a plurality of screws 566. At this time, the screw 566 is inserted into the through hole 564b provided in the supporting body portion 564, and the supporting body portion 564 is fixed to the fixing portion 562 by the washer 567. Since the screw 566 has a smaller diameter than the inner diameter of the through hole 564b and the washer 567 has a larger diameter than the inner diameter of the through hole 564b, the supporting body 564 is sandwiched between the fixing portion 562 and the washer 567 with a space between the through hole 564b and the side surface of the screw 566. Therefore, the support main body 564 is fixed to the fixing portion 562 so as to be movable in a direction perpendicular to the side surface of the main shaft 540 (the left-right direction in fig. 25). Therefore, when the rotation axis of the main shaft 540 is inclined due to a snap failure or the like, the support main body 564 allows movement of the through hole 564b and the gap portion on the side surface side of the screw 566 in the direction perpendicular to the side surface of the main shaft 540 along with the inclination of the main shaft 540, and the possibility of damage of the support 560 along with the rotation of the main shaft 540 can be reduced in advance.

Here, the supporting body portion 564 is described in further detail. As shown in fig. 25, the support main body 564 is positioned on the side surface side of the main shaft 540, supports the side surface of the main shaft 540, and is configured in a state where a substantially doughnut-shaped part is rotatable with the main shaft 540, and the support base 564a, the first holding part 564c, the second holding part 564d, and the elastic body 564e are individually fixed to each other on the side surface side of the main shaft 540; the support substrate 564a has a through hole 564 b; a first holding part 564c fixed to the support substrate 564a by a plurality of screws; a second retaining feature 564d adjustably fixed a distance from the first retaining feature 564 c; the elastic body 564e is supported by the first holding part 564c and the second holding part 564 d. Therefore, the support body 564 is located on the side surface side of the main shaft 540 and rotatably supports the main shaft 540. Specifically, the first holding part 564c is a part having a substantially L-shaped cross section, fixed to the lower side of the support base plate 564a, and positioned in a state where the elastic body 564e is in contact with the main shaft 540. The second holding part 564d is a part having a substantially L-shaped cross section, and is fixed to the first holding part 564c in a state where one surface thereof is in contact with the main shaft 540, a part thereof is inserted between the main shaft 540 and the first holding part 564c, and the elastic body 564e is pressed. Therefore, the elastic body 564e and the second holding part 564d support the side surface of the main shaft 540. In addition, the main shaft 540 is rotatably supported by the elastic body 564e, and the main shaft 540 is supported by the second holding part 564d in addition to the elastic body 564e, so that the main shaft 540 can be stably supported even when the main shaft 540 rotates.

The second holding part 564d is movable and fixed in the direction along the surface of the main shaft 540 (vertical direction in fig. 25) by the first holding part 564c and the screw 564 f. Therefore, when the screw 564f is rotated and the second holding part 564d is brought close to the first holding part 564c, the second holding part 564d presses the elastic body 564 e. At this time, the elastic body 564e is located at a position surrounded by the support base plate 564a, the first holding part 564c, the second holding part 564d, and the main shaft 540, and therefore, when the elastic body 564e is pressed by the second holding part 564d, the side surface of the main shaft 540 is pressed. Accordingly, a force for supporting the side of the main shaft 540 may be strengthened. In other words, by rotating screw 564f and adjusting the distance of first retaining feature 564c from second retaining feature 564d, the force supporting the side of spindle 540 can be adjusted.

As shown in fig. 25, a plurality of protrusions 556 are provided on the side surface of the main shaft 540 at positions above the support 560 and on the side surface of the main shaft 540 so as to be linear, and a sensor 534 for detecting the protrusions 556 is provided at a position facing the protrusions 556. The sensing portion 534 is a well-known detection sensor that detects the position of the protrusion 556. Therefore, for example, when the rotation axis of the main shaft 540 is inclined due to a seizure failure or the like, the positions of the plurality of projections 556 (the positions in the vertical direction in fig. 22) change with the rotation when the main shaft 540 rotates, and therefore, the inclination of the rotation axis of the main shaft 540 can be detected. In other words, since the occurrence of the seizure or the like can be detected, the occurrence of some kind of abnormality in the rotation of the main shaft 540 due to the occurrence of the seizure or the like can be detected, and the occurrence of the seizure or the like can be quickly coped with, whereby the possibility of breakage can be reduced in advance.

As shown in fig. 26, the driving unit 570 is a hydraulic driving device including a gear 572, a brake 574, a pair of rotating plates 575a and 575b (hereinafter also referred to as "rotating plates 575"), and a hydraulic cylinder 576a and a hydraulic cylinder 576b (hereinafter also referred to as "hydraulic cylinder 576"), and having a ratchet mechanism for rotating the main shaft 540 in the clockwise direction; wherein, the gear 572 is fixed on the side of the main shaft 540; a stopper 574 that restricts rotation of the gear 572 in one direction; a pair of rotation plates 575a and 575b located at both sides of the stopper 574; the hydraulic cylinders 576a and 576b are respectively connected to the rotation plate 575. The hydraulic cylinder 576 is connected at one side thereof to the main body 530 through a connecting shaft 578a of the bearing rotation plate 575 and the spherical bearing 557a, and at the other side thereof through a connecting shaft 580a of the bearing spherical bearing 579 a. Since both ends of the hydraulic cylinder 576 are axially stopped by the spherical bearings 577a and 579a in this manner, when the rotation shaft of the main shaft 540 is tilted due to a seizure failure or the like, the hydraulic cylinder 576 is tilted in accordance with the tilt of the rotation shaft of the main shaft 540, and is axially stopped by the spherical bearings 577a and 579a in a state where the hydraulic cylinder 576 is tilted. Therefore, even when the rotation axis of the main shaft 540 is inclined due to a seizure failure or the like, the possibility of breakage can be reduced in advance.

Here, the operation of the driving unit 570 will be described in further detail with reference to fig. 27. Here, fig. 27 is an explanatory diagram for explaining the operation of the driving unit 570, and fig. 27A shows a state in which the hydraulic cylinder 576a is contracted, and fig. 27B shows a state in which the hydraulic cylinder 576a is expanded. The driving unit 570 causes the hydraulic cylinder 576a to extend in synchronization with the extension of the hydraulic cylinder 576b, and causes the hydraulic cylinder 576a to extend and the hydraulic cylinder 576b to extend, so that the rotation plate 575 rotates clockwise, and the main shaft 540 and the gear 572 rotate in accordance with the rotation of the rotation plate 575. At this time, stopper 574 which is located upward in the direction of gear 572 does not restrict rotation of gear 572 by tilting movement along gear 572. On the other hand, when the hydraulic cylinder 576a contracts and the hydraulic cylinder 576b contracts, the rotating plate 575 rotates counterclockwise, but the stopper 574 engages the gear 572 to restrict the counterclockwise rotation of the gear 572. Accordingly, the main shaft 540 is rotated clockwise by the extension and contraction of the hydraulic cylinder 576.

Both ends of hydraulic cylinder 576a are positioned in a state of being supported by spherical bearings 577a and 579a, and both ends of hydraulic cylinder 576b are positioned in a state of being supported by spherical bearings 577b and 579 b. Therefore, when the rotation axis of main shaft 540 is tilted due to a seizure failure or the like, hydraulic cylinder 576 is tilted in accordance with the tilt of the rotation axis of main shaft 540, and hydraulic cylinder 576 is supported by spherical bearings 577 and 579 in a tilted state. Therefore, since the hydraulic cylinder 576 is tilted, that is, the main shaft 540 can be tilted while the spherical bearings 577 and 579 support the hydraulic cylinder 576, the possibility of damage to the driving unit 570 can be reduced even when the rotation axis of the main shaft 540 is tilted due to a seizure failure or the like.

According to silo 520 of the fifth embodiment described in detail above, main shaft 540 supported by bearing portion 558 is rotated by driving portion 570, and a plurality of stirring blades 550 are rotated in accordance with the rotation of main shaft 540, so that the contents stored in storage portion 532 can be stirred. At this time, if foreign matter or the like is mixed into the storage, the foreign matter is caught between the lowermost stirring blade 550 and the storage 532, and a seizure failure may occur. In this case, as the stirring blade 550 is pushed upward by the foreign matter, one surface side of the main shaft 540 is also pushed upward, and the rotation axis of the main shaft 540 is inclined. Accordingly, if the rotation axis of the main shaft 540 rotates in an inclined state, the damage may be caused. However, since silo 520 includes sensor 534 for detecting vertical movement of main shaft 540, sensor 534 can detect vertical movement of main shaft 540, that is, inclination of the rotation axis of main shaft 540, when the rotation axis of main shaft 540 is inclined, since protrusion 556 moves in the vertical direction. Therefore, since the occurrence of the seizure failure can be detected, the possibility of breakage due to the occurrence of the seizure failure can be reduced in advance.

Further, since the hydraulic cylinder 576 is positioned at both ends by the spherical bearings 577 and 579, when the rotation axis of the main shaft 540 is tilted, the hydraulic cylinder 576 can be tilted in accordance with the tilt of the rotation axis of the main shaft 540. Therefore, even when the rotation axis of the main shaft 540 is inclined due to occurrence of a seizure failure or the like, the possibility of breakage can be reduced in advance.

Further, since the main shaft 540 is supported by the support 560 including the support main body 564 rotatably supporting the main shaft 540 from the side direction and the fixing part 562 movably fixing the support main body 564, when the rotation axis of the main shaft 540 is tilted, the support main body 564 moves while being fixed to the fixing part 562 with the rotation of the main shaft 540, and the tilting of the main shaft 540 is allowed. Therefore, even when the rotation axis of the main shaft 540 is inclined due to occurrence of a seizure failure or the like, the possibility of breakage can be reduced in advance.

Further, since the main shaft 540 is pressed by the elastic body 564e provided at a position surrounded by the side surface of the main shaft 540 and the first holding part 564c and the second holding part 564d, and the first holding part 564c and the second holding part 564d are fixed by the screw 564f in a state where they are movable with respect to each other, when the first holding part 564c and the second holding part 564d are moved in a direction of approaching each other by the screw 564f, the elastic body 564e is pressed, and the side surface of the main shaft 540 is strongly pressed by the elastic body 564 e. Accordingly, the supporting force to the main shaft 540 may be increased or decreased.

The fixing portion 562 is fixed to the support body portion 564 by a screw 566, and the diameter of the screw 566 is smaller than the inner diameter of the through hole 564 b; among them, a part of the screw 566 penetrates the through hole 564b provided in the support body portion 564. Therefore, the screw 566 can move in the side surface direction of the through hole 564b, and when the main shaft 540 is rotated in a state where the rotation axis of the main shaft 540 is inclined due to a snap failure or the like, the support main body 564 can be allowed to move only in the gap between the through hole 564b and the side surface of the screw 566, so that the inclination of the main shaft 540 can be allowed, and the possibility of damage can be reduced in advance even in the case of a snap failure or the like.

The present invention is not limited to the above embodiments at all, and can be carried out in various forms within the technical scope of the present invention.

Industrial applicability

As illustrated in the above embodiments, the present invention is applicable to the field of silos, and in particular to large silos.

Claims (5)

1. A silo for stirring a received material received in a receiving portion, comprising:

a main shaft rotatably provided in the housing portion; and

a plurality of stirring blades rotating along with the rotation of the main shaft;

a drive unit that rotates the spindle;

a support portion rotatably supporting the spindle from a lateral direction;

a bearing portion that rotatably supports the main shaft; and

a sensing unit that detects movement of the main shaft in the vertical direction;

and a part of the spindle penetrates through the bottom surface of the accommodating part.

2. The silo according to claim 1, wherein the drive part is provided with an oil pressure drive device consisting of a hydraulic cylinder;

the two end parts of the hydraulic cylinder are positioned by spherical bearings.

3. The silo according to claim 1 or 2, wherein the support part is provided with a support body part and a fixing part;

the support body portion rotatably supporting the main shaft from a side direction; the fixing part enables the supporting body part to be movably fixed.

4. The silo of claim 3, wherein the support body portion is provided with an elastic portion and an adjustment portion;

the elastic part rotatably supports the main shaft; the adjusting portion increases a supporting force to the main shaft by pressing the elastic portion.

5. The silo of claim 4, wherein the securing portion is secured with screws; a through hole is arranged on one part of the screw which penetrates through the supporting body part;

the diameter of the screw is smaller than the inner diameter of the through hole.

Images