JP2001010725A - Loader hopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a loader hopper capable of easily and sufficiently performing separation of powder and dust and mixture of powder, while always introducing powder and granular body of fixed quantity by a suction of a suction type pneumatic source, without being mixed with dust and water in the atmosphere. SOLUTION: In this loader hopper, a hopper body 12 is connected with a powder and granular body supply pipe, a primary side sub-suction pipe 34 and a secondary side sub-suction pipe 35. The primary side sub-suction pipe 34 and the secondary side sub-suction pipe 35 are connected with a main suction pipe 33 connected with a suction type blower 32. Powder and granular body transported by pneumatics within the loader hopper 12 by an operation of the suction type blower 32 is agitated and mixed within the loader hopper 12 by operating an adjusting valve 37, and thereby mixed powder falls to a lower side hopper part 17 and dust is delivered to the primary side sub-suction pipe 34. As a result, powder and dust are excellently separated and powder is uniformly mixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a loader hopper, and more particularly, to a loader hopper used for a pneumatic transportation device.

[0002]

2. Description of the Related Art For example, Japanese Patent Application Laid-Open No. 9-29175 proposes an apparatus for separating granular material and powder as related to the present invention. As shown in FIG. 4, the separating device is formed in a cylindrical main body 1, a powder outlet 3 formed in a top plate 2 provided on an upper end of the cylindrical main body 1, and a powder outlet 3 formed in a lower end of the cylindrical main body 1. Outlet 4 and the cylindrical body 1
And a granular material supply port 5 formed on the upper part of
A discharge pipe 6 to which an air suction device (not shown) is connected is connected to the powder outlet 3, and a conduit 7 for supplying primary air and powder is connected to the powder supply port 5. Is connected. Further, a cylindrical body 8 is connected to the granular material outlet 4, and the cylindrical body 8 is opened and closed by a closing member 9 rotatable in a circumferential direction. A next air supply port 10 is formed.

Then, an air suction device (not shown) is operated, and the secondary air supply port 1 is closed by the closing member 9.
By adjusting the degree of opening of the cylindrical body 1, the granular material is introduced into the cylindrical main body 1 together with the primary air from the conduit 7, while the secondary air is introduced from the secondary air supply port 10. By swirling the granules with air at
While the particles are dropped, the powder is discharged together with air into an exhaust pipe 6.
To separate the particles from the powder.

[0004]

SUMMARY OF THE INVENTION However, Japanese Patent Application Laid-Open No. Hei 9-2
In the separation device described in No. 9175, the amount of primary air introduced from the granular material supply port 5 is changed by adjusting the degree of opening of the secondary air supply port 10 by the closing member 9, whereby There is a problem that the amount of the granular material introduced from the body supply port 5 changes. That is, when the secondary air supply port 10 is fully opened in a state where the air suction device is operating at a constant suction amount, the suction amount of the secondary air becomes very large, while the primary air is sucked. The amount of suction becomes very small, whereby the amount of the introduced granular material becomes very small, and when the secondary air supply port 10 is slightly opened, the amount of suction of the secondary air becomes small. On the other hand, the amount of primary air to be suctioned becomes very large while the amount of primary air is greatly reduced.

[0005] Therefore, if it is intended to always separate a certain amount of powder using such a separating apparatus, the primary air can be sufficiently sucked even if the opening degree of the secondary air supply port 10 is increased. In addition to providing a large and expensive air suction device having a very high suction power, it is necessary to adjust the suction amount of the air suction device in accordance with the adjustment of the opening degree of the secondary air supply port 10, and adjustment for that purpose is required. The operation becomes very complicated.

Further, in this separation apparatus, the separation between the particles and the powder is carried out by swirling the particles together with air in the cylindrical main body 1, that is, the separation by a so-called cyclone is dominant. Depending on the diameter and type of the body and the powder, the separation may not be sufficient.

Further, when secondary air is introduced from the secondary air supply port 10, dust and moisture in the air are simultaneously introduced together with the secondary air, so that the separation capability is reduced or the separated particles and It may have an undesirable effect on the powder.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to make it possible to always introduce a certain amount of powder and granules by suction of a suction-type pneumatic source, while keeping the dust and the granules from flowing. It is an object of the present invention to provide a loader hopper which can easily and sufficiently perform the separation and the mixing of the particles, and do not mix dust and moisture in the atmosphere.

[0009]

According to a first aspect of the present invention, a powder supply port, a primary suction port, and a secondary suction port are opened to receive the powder. A hopper body, connected to the powder supply port, a powder supply pipe for supplying powder to the hopper body, and connected to the primary side suction port and the secondary side suction port, A suction pipe for sucking the inside of the hopper body by a type pneumatic source, wherein the suction pipe is provided in a branch from the main suction pipe connected to the suction type pneumatic source side, A plurality of sub-suction tubes connected to the primary side suction port and the secondary side suction port, respectively, are provided.

In such a configuration, when the suction-type pneumatic power source is operated, the inside of the hopper body is sucked through the suction pipe, whereby the granular material is supplied from the granular material supply pipe into the hopper body. . At this time, since the inside of the hopper body is sucked by the sub suction pipe connected to the primary suction port and the sub suction pipe connected to the secondary suction port, it is received in the hopper body. The granules flow toward each of the primary suction port and the secondary suction port, and at this time, the granules are also agitated and mixed according to the flow so that the granules collide with each other. . By this stirring and mixing, the heavier particles fall while being sufficiently mixed, and lighter dust is sucked into the primary side suction port and / or the secondary side suction port.

In this loader hopper, a powder supply port is connected to the powder supply port, and sub suction pipes are respectively connected to the primary suction port and the secondary suction port.
Furthermore, since each sub-suction tube is configured to be connected to the main suction tube connected to the suction-type pneumatic source side, suction by the suction-type pneumatic source is sealed without being opened to the atmosphere. It is performed in the system. Therefore, even if the inside of the hopper body is sucked from both the primary side suction port and the secondary side suction port, the suction amount of the main suction tube does not fluctuate and the suction is performed at a constant suction amount. In addition, by suction in such a closed system, there is no mixing of dust and moisture in the atmosphere.

The invention described in claim 2 is the first invention.
In the invention described in (1), the primary suction port is formed at an upper portion of the hopper main body, and the secondary suction port is formed at a lower portion of the hopper main body.

[0013] According to such a configuration, the airflow flows in the upward and downward directions between the primary suction port formed in the upper part of the hopper body and the secondary suction port formed in the lower part of the hopper body. Therefore, the granules are stirred and mixed while floating and rising during this time.

[0014] The invention according to claim 3 provides the invention according to claim 2.
In the invention described in (1), the powder material supply port is formed near or above the secondary suction port in the hopper body.

According to such a configuration, the granular material supplied from the granular material supply port into the hopper main body faces between or near the primary side suction port and the secondary side suction port. When supplied from the granule supply port, the particles are immediately stirred and mixed according to the flow of the air flow without falling.

The invention described in claim 4 is the first invention.
In the invention described in any one of (1) to (3), the suction pipe may be configured to generate a suction force in a sub suction pipe connected to the primary suction port and a suction force in a sub suction pipe connected to the secondary suction port. It is characterized in that a difference in suction force is generated between them.

According to such a configuration, for example, when the suction force in the sub suction tube connected to the secondary suction port is made weaker than the suction force in the sub suction tube connected to the primary suction port, The supplied particles are sufficiently agitated and mixed in the hopper body by the difference in suction force, and then the particles fall while the powder flows toward the primary suction port.

The invention described in claim 5 is the first invention.
In the invention described in any one of (4) to (4), it is preferable that an adjusting means for adjusting a suction force is provided in the primary suction port and / or the sub suction pipe connected to the secondary suction port. Features.

According to such a configuration, the suction force of the auxiliary suction pipe connected to the primary suction port or the secondary suction port provided with the adjustment means can be adjusted by operating the adjustment means. Thereby, the difference in suction force between the suction force in the sub suction tube connected to the primary suction port and the suction force in the sub suction tube connected to the secondary suction port can be freely adjusted. .

Further, the invention according to claim 6 is the invention according to claim 1.
In the invention according to any one of the above items (5) to (5), a discharge port for discharging the granules is formed at a bottom portion of the hopper main body, and the powder and granule supply port is opened at a side portion of the hopper main body. It is characterized by having.

According to this configuration, the discharge port for discharging the granules and the powder supply port are formed in different parts of the hopper body, respectively. The device configuration can be simplified as compared with a case where both the openings are formed at the bottom.

[0022]

FIG. 1 is a partial sectional side view showing an embodiment of a loader hopper according to the present invention, and FIG. 2 is a partial sectional side view of FIG. 1 rotated 90 ° in a horizontal direction. It is sectional side view.

In FIGS. 1 and 2, the loader hopper 11 is applied to a pneumatic transport device, for example, by separating granules and dust from granules obtained by crushing plastic and separating the separated granules. The body (pellet)
For example, it is used to supply other processing equipment such as a molding machine.

The loader hopper 11 includes a hopper body 12
And a powder material supply pipe 13 connected to the hopper body 12.
And a suction tube 14. The hopper body 12
An upper hopper portion 15 having a funnel-shaped lower portion formed continuously with a cylindrical upper portion, a tubular tube portion 16 formed continuously with a lower end of the upper hopper portion 15, and a lower end of the tube portion 16 And a funnel-shaped lower hopper portion 17 formed continuously with the hopper.

An opening at the upper end of the upper hopper section 15 is closed by an upper lid plate 18, and a primary suction port 19 to which the suction pipe 14 is connected is formed in a central portion of the upper lid plate 18. ing. Also, on the back side of the upper lid plate 18,
A dish-shaped punching filter 20 formed so as to cover the primary suction port 19 at a predetermined interval is provided. The punching filter 20 has a diameter different depending on the purpose and application thereof, but has a large number of punched holes that can prevent the passage of particles and allow only dust to pass.

The tube portion 16 is formed to have substantially the same diameter as the opening at the lower end of the upper hopper portion 15, and the upper half portion is a transparent portion 21 made of acrylic resin or the like. At the upper and lower ends of the transparent portion 21, two holder plates 22 are mounted in a horizontal direction, and between each holder plate 22, along the transparent portion 21 and at a predetermined distance from the transparent portion 21. , A plurality of holder rods 23 are fixed by bolts. A level switch 24 for detecting the full level in the loader hopper 11 is attached to the holder rod 23.

Further, below the transparent part 21 in the pipe part 16, a powder supply port 25 to which the powder supply pipe 13 is connected is provided.
A secondary suction port 26 to which the suction pipe 14 is connected is formed so as to open to the side of the pipe 16. By opening the powder material supply port 25 and the secondary suction port 26 on the side of the pipe section 16, for example, only a discharge port 28 described later can be provided at the lower end of the lower hopper 17, and the apparatus configuration Can be simplified. The powder supply port 25 and the secondary suction port 26 are connected to the pipe 16.
Are adjacent to each other at a distance of approximately 90 ° in the circumferential direction, and are formed at substantially the same position in the vertical direction.

The upper end of the lower hopper 17 is
The diameter of the upper hopper 15 is substantially equal to the diameter of the upper part of the upper hopper 15, and the connection with the pipe 16 is closed by the lower lid 27. In addition, a cylindrical discharge port 28 for discharging particles is provided at an opening at the lower end, that is, at the bottom of the hopper body 12. In addition, a cylindrical cutout 29 for taking out granules is provided diagonally downward on the funnel-shaped side. In addition,
A cap 30 is attached to the lower end of the cutout 29. Although not shown, a processing device such as a molding machine is usually attached to the outlet 28 in a state where the inside of the hopper main body 12 is kept closed.

The powder supply pipe 13 has one end connected to a powder supply port 25 formed in the pipe 16 in a direction obliquely upward from the pipe 16, and the other end connected to a powder supply port 25. For example, it is connected to a storage tank 31 for storing the powder and the like.

The suction tube 14 has one end, for example,
A main suction pipe 33 connected to a suction-type pneumatic power source such as a suction blower 32, and a primary side sub-suction pipe 34 and a secondary side sub-suction pipe 35 provided in a vertically branched manner from the main suction pipe 33. ing. That is, at the other end of the main suction pipe 33,
A T-shaped branching adapter 36 is attached,
One end of the primary side sub suction pipe 34 is connected to the branching adapter 3.
6 is attached so as to extend from the branching adapter 36 in the upward direction.
Is attached to the branching adapter 36 so as to extend obliquely downward from the branching adapter 36. The other end of the primary side sub-suction tube 34 is connected to a primary side suction port 19 formed in the upper lid plate 18 of the upper hopper section 15 and a secondary side sub-suction tube 35 is connected.
Is connected to a secondary suction port 26 formed in the tube portion 16.

An adjusting valve 37 as adjusting means for adjusting the cross-sectional area of the opening of the secondary side suction pipe 35 is provided in the secondary side suction pipe 35 in the longitudinal direction. In addition, a punching filter 38 is provided in the opening at the tip of the other end. The punching filter 38 has a diameter different from that of the above-described punching filter 20 depending on the purpose and application thereof, but has a large number of punch holes that can prevent the passage of particles and pass only dust. Have been.

Next, a method of separating the granular material and the dust from the granular material by the loader hopper 11 of the present embodiment configured as described above will be described.

First, when the suction blower 32 is operated,
The powder stored in the storage tank 31 is sucked through the suction pipe 14, the hopper body 12, and the powder supply pipe 13, whereby the powder stored in the storage tank 31 becomes the powder It is pneumatically transported into the hopper body 12 via the supply pipe 13. By operating the control valve 37, the powder and granules that have been pneumatically transported are transferred to the hopper main body 1.
The suction force in the primary side sub-suction tube 34 and the suction force in the secondary side sub-suction tube 35 are balanced so that the particles are agitated and mixed in the tube 2 so that the powder and granules collide with each other. Adjust as follows.

That is, by freely adjusting the adjusting valve 37, the suction force in the secondary side sub-suction tube 35 is made weaker than the suction force in the primary side sub-suction tube 34, and Between the primary suction port 19 formed at the bottom of the hopper body 12 and the secondary suction port 26 formed at the lower part of the hopper body 12. As a result, the powder and granules pneumatically transported into the hopper body 12 tend to flow toward the primary suction port 19 which has a stronger suction force, while being suctioned also to the secondary suction port 26. Due to the difference in the suction force, the particles float and fall in the vertical direction according to the flow of the airflow, whereby the particles are sufficiently agitated and mixed, so that the powder and granules collide with each other. By this stirring and mixing, the heavier granules fall to the lower hopper section 17 and lighter dusts are sucked into the primary suction port 19 having a stronger suction force. And dust are well and efficiently separated.

Then, the dropped particles are transferred to the lower hopper 1
7 is supplied to a processing device such as a molding machine from the discharge port 28 of the nozzle 7 and is separated from the particles by the punching filter 20 from the primary side suction port 19. Suction tube 34 and main suction tube 33
Is pneumatically conveyed toward the filter 39 via the filter 39, trapped by the filter 39, and only air is released from the suction blower 32 to the atmosphere. The secondary suction port 26
A small amount of dust is also sucked into the secondary side suction port 2
The dust heading for 6 is filtered by the punching filter 38.
After being separated from the granules, the particles are pneumatically transported from the secondary suction port 26 to the filter 39 via the secondary auxiliary suction pipe 35 and the main suction pipe 33.

In the hopper body 12, since the powder supply port 25 and the secondary suction port 26 are formed at substantially the same position in the vertical direction of the pipe 16, the powder supply port 25 and the secondary suction port 26 When the powder and granular material transported into the hopper body 12 is supplied from the powder and particle supply port 25, the powder and particle are immediately stirred and mixed according to the flow of the air flow without falling, so that the powder and the particle are more efficiently and sufficiently. It is possible to prevent the particles and the dust from being separated, and the particles from which the particles and the dust are not separated from falling into the lower hopper 17 as they are and being mixed into the separated particles.

More specifically, this operation is performed, for example, by adjusting the control valve 3 so that the granular material floats and falls vertically while looking at the transparent portion 21.
7 may be adjusted as appropriate. That is, when the control valve 37 is closed, the powder is sucked only from the primary side sub-suction pipe 34, so that the powder and granules do not float and fall, but are in a state of sticking to the punching filter 38. When the control valve 37 is gradually opened, the powder is also sucked from the secondary side sub-suction pipe 35, so that the granular material is drawn by the suction from the secondary side sub-suction pipe 35. It falls by its own weight.
Then, the opening operation of the adjustment valve 37 is performed by the primary side auxiliary suction pipe 3.
By stopping when the rise of the granular material due to the suction force from the balance 4 and the suction from the secondary side auxiliary suction pipe 35 and the fall of the granular material by their own weight can be balanced, the granular material is stopped. Can be floated and dropped vertically.

According to the operation of the control valve 37, the suction force in the primary side sub suction pipe 34 and the secondary side sub suction pipe 3
Since the difference between the suction force and the suction force in 5 can be freely adjusted, the optimum stirring and mixing state can always be easily formed according to the size, type, supply amount, and the like of the granular material. be able to.

In the loader hopper 11 of the present embodiment, the powder supply pipe 13 is connected to the powder supply port 25,
The primary side suction port 19 is connected to the primary side suction pipe 34, the secondary side suction port 26 is connected to the secondary side suction pipe 35, and further, the primary side suction pipe 34 and the secondary side suction pipe 35. But,
Since it is configured to be connected to the main suction pipe 33 connected to the suction blower 32, the suction by the suction blower 32 is performed in a closed system without being opened to the atmosphere. Therefore, even if the inside of the hopper body 12 is sucked from both the primary suction port 19 and the secondary suction port 26, the suction amount of the main suction pipe 33 does not change, and the suction is always performed at a constant suction amount. Therefore, a certain amount of the granular material can always be pneumatically transported and efficiently separated.

In addition, in the suction in such a closed system, since dust and moisture in the air are not mixed, the separation ability and the quality of the separated particles are reduced, for example. Also, there is no occurrence of molding failure due to mixing of moisture and the like.

Further, as shown in FIG. 3, for example, when the powder supply pipe 13 is connected to a plurality of storage tanks 31a, 31b, 31c, the loader hopper 11 In addition to separating the powder and the dust, the powders and granules stored in the storage tanks 31a, 31b and 31c are uniformly mixed in the hopper body 12 and supplied to a processing device such as a molding machine. Can be.

That is, in FIG. 3, three storage tanks 31a, 3a and 3
1b, 31c are connected via supply pipes 43a, 43b, 43c provided with supply control valves 42a, 42b, 42c.
It is connected to the transport pipe 40 connected to the powder supply pipe 13 respectively. At the open end of the transport pipe 40, a filter 41 for removing dust, moisture and the like in the atmosphere is provided. Further, the suction type blower 32 is connected to the suction pipe 14 via the filter 39 as described above.

Each of the supply control valves 42a, 42b, 4
By adjusting the supply amount from each storage tank 31a, 31b, 31c by adjusting 2c, each storage tank 31
a, 31b, and 31c, while controlling the ratio of the granular material supplied and operating the suction blower 32, as described above, the granular material stored in each of the storage tanks 31a, 31b, and 31c is sucked. Then, the air is pneumatically transported from the transport pipe 40 to the hopper body 12 at a predetermined ratio through the powder supply pipe 13. Next, by adjusting the control valve 37, the powder particles are floated and dropped in the vertical direction and sufficiently stirred and mixed, so that different types of particles are discharged while the dust is discharged from the primary suction port 19 side. Can be uniformly mixed at a predetermined ratio. Then, the particles uniformly mixed at a predetermined ratio drop to the lower hopper 17, and may be supplied to a processing device such as a molding machine from the discharge port 28 of the lower hopper 17.

Thus, the plurality of storage tanks 31a, 3
By pneumatically transporting the granular material from the loaders 1b and 31c to the loader hopper 11, for example,
8, a separate mixer is provided, and after mixing the pulverized particles transported by the mixer with the pneumatic force, the mixture is not supplied to a processing device such as a molding machine. Since the mixing can be performed sufficiently uniformly, the loader hopper 11 can be directly connected to a processing device such as a molding machine, and the complexity of the device configuration and the increase in cost due to the provision of a separate mixing machine can be avoided. it can. It should be noted that such mixing of the granules can be easily performed by simply operating the adjustment valve 37 in accordance with the type and size of each granule, or the mixing ratio, etc. Can be mixed in a state.

In this embodiment, the primary side suction port 19 and the secondary side suction port 26 are provided above and below the hopper body 12.
Are formed, the primary side suction port 19 and the secondary side suction port 26 may be any of the upper and lower sides, and the granular material supply port 25, the primary side suction port 19 and the secondary side suction port 26 may be formed in plurality. When a plurality of the granular material supply port 25, the primary side suction port 19, and the secondary side suction port 26 are formed, the granular material supply pipe 13, the primary side auxiliary suction pipe 34, and the secondary side which are respectively connected thereto. The sub-suction pipe 35 may be separately connected to each of the granular material supply port 25, the primary-side suction port 19, and the secondary-side suction port 26, respectively. The connection may be branched from the primary side sub suction pipe 34 and the secondary side sub suction pipe 35. In the case where a plurality of powder supply ports 25 are provided, it is preferable to provide a switching valve for selectively switching appropriately. However, the primary side auxiliary suction pipe 34 and the secondary side auxiliary suction pipe 35 need to be connected to the main suction pipe 33 at one end.

In the present embodiment, the secondary side suction pipe 3
Although the adjustment valve 37 is provided in the middle of the length direction of the fifth unit 5, for example, the adjustment valve 37 may be provided only on the primary side sub-suction tube 34, or on both the primary side sub-suction tube 34 and the secondary side sub-suction tube 35. The adjusting means is not limited to the adjusting valve 37 and may be a known air volume adjusting mechanism. Further, even if the adjusting means is not provided, for example, the opening and closing of the primary side auxiliary suction pipe 34 and the secondary side auxiliary suction pipe 35 may be performed. By appropriately selecting the area, the suction force in the primary side sub suction pipe 34 and the suction force in the secondary side sub suction pipe 35 may be balanced.

In the present embodiment, the primary side secondary suction pipe 3
Although the punching filters 20 and 38 are provided in each of the secondary suction pipe 4 and the secondary side suction pipe 35, the invention is not limited to this as long as it can separate the granular material and the dust. Such a configuration may be adopted.

In this embodiment, the hopper body 12
With the upper hopper section 15, the pipe section 16 and the lower hopper section 1.
7, the shape is not particularly limited. For example, the lower hopper 17 may not be provided.

Further, the transport gas sucked by the suction blower 32 is not limited to air, and may be appropriately selected depending on the purpose and application, such as nitrogen gas.

[0050]

As described above, according to the first aspect of the present invention, the particles are agitated and mixed in accordance with the flow of the air current, and the particles collide with each other. Granules can be separated well and granules can be uniformly mixed. Further, since the suction by the suction-type pneumatic power source is performed in a closed system, it is possible to always suction with a constant suction amount, and therefore, always supply a constant amount of powder and granules into the hopper body, It can be separated efficiently. In addition, in the suction in such a closed system, there is no mixing of dust or moisture in the atmosphere, so that there is no reduction in separation ability and no deterioration in the quality of the separated particles. .

According to the second aspect of the present invention, the granular material floats between the primary suction port formed in the upper part of the hopper body and the secondary suction port formed in the lower part of the hopper body. And stirring and mixing while falling, thereby
The particles can be sufficiently uniformly mixed while efficiently separating the dust and the particles.

According to the third aspect of the present invention, the granular material supplied from the granular material supply port into the hopper main body is not dropped and immediately drops when supplied from the granular material supply port. Since the powder is stirred and mixed in accordance with the flow of the air flow, the powder and granules can be mixed more efficiently and sufficiently, and the particles that are not separated from the dust fall as they are and are mixed into the separated particles. Can be prevented.

According to the fourth aspect of the present invention, the supplied granular material is sufficiently stirred and mixed in the hopper main body due to a difference in suction force between the granular material and the granular material. , And the separated dust can be satisfactorily discharged.

According to the fifth aspect of the present invention, the suction force between the suction force in the sub suction tube connected to the primary suction port and the suction force in the sub suction tube connected to the secondary suction port. Can be freely adjusted, so that an optimal stirring and mixing state can be easily formed according to the size, type, supply amount, and the like of the powder and granules.

According to the sixth aspect of the present invention, the discharge port for discharging the granules and the powder material supply port are formed in different portions of the hopper body, respectively. The apparatus configuration can be simplified as compared with the case where both the powder supply ports are formed at the bottom.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing an embodiment of a loader hopper of the present invention.

FIG. 2 is a partial cross-sectional side view of the state in which the partial cross-sectional side view of FIG. 1 is rotated 90 ° in a horizontal direction.

FIG. 3 is a configuration diagram illustrating an embodiment of a pneumatic transportation system using the loader hopper of FIG. 1;

FIG. 4 is a side sectional view showing a conventional apparatus for separating powder and granules related to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 loader hopper 12 hopper main body 13 powder supply pipe 14 suction pipe 19 primary suction port 25 powder supply port 26 secondary suction port 32 suction blower 33 main suction pipe 34 primary side sub suction pipe 35 secondary side sub Suction tube 37 Control valve

Claims (6)

[Claims] 1. A hopper main body having a powder material supply port, a primary-side suction port, and a secondary-side suction port opened and receiving a powder material, a hopper body connected to the powder material supply port, and a powder particle being attached to the hopper body. A granular material supply pipe for supplying a body, connected to the primary side suction port and the secondary side suction port,
A suction pipe for sucking the inside of the hopper main body by a suction-type pneumatic source, wherein the suction pipe is provided in a branch shape from the main suction pipe connected to the suction-type pneumatic source side and the main suction pipe. A loader hopper comprising: a plurality of auxiliary suction pipes respectively connected to the primary side suction port and the secondary side suction port. 2. The hopper body according to claim 1, wherein the primary suction port is formed at an upper part of the hopper body, and the secondary suction port is formed at a lower part of the hopper body. Loader hopper. 3. The loader hopper according to claim 2, wherein the powder supply port is formed near or above the secondary suction port in the hopper body. 4. The suction tube according to claim 1, wherein a suction force between a suction force in a sub suction tube connected to the primary suction port and a suction force in a sub suction tube connected to the secondary suction port. The loader hopper according to any one of claims 1 to 3, wherein the loader hopper is configured to generate a difference. 5. An adjusting means for adjusting a suction force is provided in a sub suction pipe connected to the primary suction port and / or the secondary suction port. 5. The loader hopper according to any one of 1 to 4. 6. A discharge port for discharging granules is formed at the bottom of the hopper main body, and the powder and granule supply port is opened at a side portion of the hopper main body. The loader hopper according to any one of claims 1 to 5, wherein