WO2023085831A1

WO2023085831A1 - Hopper

Info

Publication number: WO2023085831A1
Application number: PCT/KR2022/017705
Authority: WO
Inventors: 김영범; 최원석; 김승창
Original assignee: 롯데케미칼 주식회사
Priority date: 2021-11-12
Filing date: 2022-11-11
Publication date: 2023-05-19
Also published as: KR20230069539A

Abstract

A hopper according to one embodiment of the present invention comprises: a hopper main body including an inlet into which a material is introduced, a flow space through which the material introduced into the inlet flows, and an outlet through which the material flowing through the flow space is discharged; and one or more blockage prevention members which, when the material is discharged through the outlet, prevent the outlet from being blocked by the material, wherein at least a part of the blockage prevention members may be attached to the outlet.

Description

Hopper

The present invention relates to a hopper.

In a process of melting and processing plastic materials such as extrusion or injection, a solid material (pellet, powder, etc.) is supplied to an extruder or injection molding machine in a free-falling manner through a hopper.

In the hopper, the inlet is larger than the outlet, so that materials put into the hopper may become entangled with each other when discharged through the outlet of the hopper, blocking the outlet of the hopper as shown in FIG. 8 . This phenomenon appears frequently when the aspect ratio (length to diameter ratio) of a material is 4 or more.

If the material blocks the outlet of the hopper, the material cannot be continuously supplied to the extruder or extruder, resulting in quality deviations in products produced by the extruder or extruder.

In order to prevent this, the operator must check from time to time whether the material blocks the exit of the hopper, and the operator must directly pierce the exit of the hopper blocked by the material, or the operator must hit the hopper so that the material does not block the exit of the hopper, which is cumbersome it was low

On the other hand, in the case of a relatively large hopper, an impeller or a vibrating hammer may be installed in the hopper to prevent the outlet of the hopper from being blocked by materials.

In the case of a relatively large hopper, mass and continuous production is possible, and by installing an impeller or a vibrating hammer, etc. in the hopper, the outlet of the hopper is not clogged with materials. Since the cost and installation space are low, Well worth the investment.

However, in the case of a hopper that is relatively small in size and produced in small quantities, it is difficult to install an impeller, a vibrating hammer, or the like in the hopper due to significant cost and installation space limitations.

The present invention has been made in recognition of at least one of the above-mentioned needs or problems occurring in the prior art.

One aspect of the object of the present invention is to ensure that, with relatively simple construction and cost, the outlet of the hopper is not blocked when material is discharged through the outlet of the hopper.

Another aspect of the object of the present invention is to ensure that, even with a hopper of relatively small size, the outlet of the hopper is not blocked by material when the material is discharged through the outlet of the hopper.

A hopper according to an embodiment of the present invention includes a hopper body including an inlet into which a material is introduced, a flow space through which the material injected into the inlet flows, and an outlet through which the material flowing through the flow space is discharged; and one or more anti-blocking members preventing the outlet from being blocked by the material when the material is discharged through the outlet, and at least a portion of the anti-blocking member may be attached to the outlet.

In this case, the blockage prevention member may extend in parallel with a predetermined length from the outlet to the flow space.

In addition, an end opposite to the outlet of the blocking member may be connected by a connecting member.

In addition, ends opposite to the outlet of the anti-blocking member may be connected to each other in contact with each other.

In addition, the aspect ratio (length to diameter ratio) of the material may be 4 or more.

And, the diameter of the outlet may be 2 to 10 times less than the length of the material.

As described above, according to the embodiment of the present invention, it is possible to prevent the outlet of the hopper from being blocked when the material is discharged through the outlet of the hopper, with a relatively simple configuration and cost.

Further, according to an embodiment of the present invention, even in a hopper having a relatively small size, the outlet of the hopper can be prevented from being blocked by the material when the material is discharged through the outlet of the hopper.

1 is a perspective view of a hopper according to a first embodiment of the present invention.

Figure 2 is a cross-sectional view of Figure 1;

3 is a photograph showing the inside of the hopper according to the first embodiment of the present invention.

4 is a cross-sectional view of a hopper according to a second embodiment of the present invention.

Figure 5 is a photograph showing the inside of the hopper when material is discharged through the outlet of the hopper according to the second embodiment of the present invention.

6 is a cross-sectional view of a hopper according to a third embodiment of the present invention.

7 is a photograph showing the inside of a hopper according to a third embodiment of the present invention.

8 is a photograph showing the inside of a hopper when material is discharged through the outlet of a conventional hopper.

In order to help understand the characteristics of the present invention as described above, a hopper related to an embodiment of the present invention will be described in more detail below.

The embodiments described below will be described based on the most suitable embodiments for understanding the technical characteristics of the present invention, and the technical characteristics of the present invention are not limited by the described embodiments, but the following It is to illustrate that the present invention can be implemented like the embodiments. Therefore, the present invention can be implemented with various modifications within the technical scope of the present invention through the embodiments described below, and these modified embodiments will be said to fall within the technical scope of the present invention.

In the reference numerals described in the accompanying drawings to aid understanding of the embodiments to be described below, related components among components that perform the same action in each embodiment are indicated with the same or extended numerals.

Hereinafter, a hopper according to the present invention will be described with reference to FIGS. 1 to 7.

As shown in FIGS. 1 and 2 , the hopper according to the first embodiment of the present invention may include a hopper body 200 and an anti-blocking member 300 .

The hopper body 200 may include an inlet 210, a flow space 220, and an outlet 230 as shown in FIGS. 1 and 2 .

A material (MR; see FIG. 5 ) may be introduced into the inlet 210 . The material MR injected into the inlet may be in the form of pellets. However, the shape of the material MR is not particularly limited. The inlet 210 may be located above the hopper body 200 . And, the material MR above the inlet 210 may be injected into the inlet 210 by, for example, its own weight.

In the flow space 220 , the material MR injected into the inlet 210 may flow. To this end, one side of the flow space 220 may be connected to the inlet 210 . The material MR injected into the inlet 210 may reach the outlet 230 by flowing through the flow space 220 by its own weight, for example.

The outlet 230 may discharge the material MR that has flowed through the flow space 220 . To this end, the other side of the flow space 220 may be connected to the outlet 230 . The outlet 230 may be located at the bottom of the hopper body 200 . The diameter DO of the outlet 230 may be smaller than the diameter DI of the inlet 210 . Accordingly, the flow space 220 may have a funnel shape. In addition, the material MR injected into the inlet 210 may be collected while flowing through the flow space 220 and may be discharged through the outlet 230 after reaching the outlet 230 .

As shown in FIGS. 1 and 2 , the outlet 230 may extend by a predetermined length in the discharge direction of the material MR. The length of the outlet 230 extending in the discharge direction of the material MR is not particularly limited, and may be any length as long as the material MR can be discharged. Also, the outlet 230 may not extend in the discharge direction of the material MR.

The outlet 230 may be connected to, for example, an extruder (not shown) or an extruder (not shown). Accordingly, the material MR discharged from the outlet 230 may flow into an extruder or an extruder, and may be extruded or injected from the extruder or extruder.

When the material MR is discharged through the outlet 230 of the hopper body 200, the blocking preventing member 300 may prevent the outlet 230 of the hopper body 200 from being blocked by the material MR. there is.

In this case, the aspect ratio (length to diameter ratio) of the material MR injected into the inlet 210 of the hopper body 200 may be 4 or more. When the aspect ratio of the material (MR) introduced into the inlet 210 of the hopper body 200 is smaller than 4, even if there is no blockage prevention member 300, the material MR is passed through the outlet 230 of the hopper body 200. When discharged through, since the outlet 230 may not be blocked by the material MR, in this case, the blockage prevention member 300 is not required.

As shown in FIGS. 1 to 3 , at least a portion of the blockage prevention member 300 may be attached to the outlet 230 of the hopper body 200 . For example, at least a portion of the blockage prevention member 300 is attached to the inside of the outlet 230 of the hopper body 200 and may have a rod shape. In addition, at least a portion of the lower portion of the blockage prevention member 300 may be attached to the inside of the outlet 230 of the hopper body 200 by an adhesive or the like. However, the portion of the anti-blocking member 300 attached to the inside of the outlet 230 of the hopper body 200 is not particularly limited, and at least a portion of the anti-blocking member 300 is the outlet 230 of the hopper body 200. The method or structure attached to the inside is not particularly limited either. Also, the shape of the anti-blocking member 300 is not particularly limited.

Since at least a portion of the blockage prevention member 300 is attached to the outlet 230 of the hopper body 200 as described above, the material MR flows through the flow space 220 of the hopper body 200 to form the hopper body 200. While being discharged through the outlet 230 of ), the flow of the material MR may be dispersed by the blockage prevention member 300 as shown in FIG. 5 . Accordingly, while the material MR flows through the flow space 220 of the hopper body 200 and is discharged through the outlet 230 of the hopper body 200, it may not be entangled with each other. In addition, the load of the material MR may also be distributed. Therefore, when the material MR is discharged through the outlet 230 of the hopper body 200, the material MR may not block the outlet 230 of the hopper body 200.

In this way, when the material MR is discharged through the outlet 230 of the hopper body 200, since the material MR may not block the outlet 230 of the hopper body 200, the material MR can be continuously supplied to an extruder or an extruder through the hopper 100, so that quality deviation may not occur in products made in the extruder or extruder.

In addition, even if a larger and more complex device than the blockage prevention member 300, such as an impeller (not shown) or a vibrating hammer (not shown), is installed in the hopper 100, the material MR is discharged from the outlet of the hopper body 200. When discharged through the hopper 230, the material MR may not block the outlet 230 of the hopper body 200.

As such, with a relatively simple configuration, when the material MR is discharged through the outlet 230 of the hopper body 200, the outlet 230 can be prevented from being blocked. The invention can be easily applied to exhibit excellent effects.

The blockage prevention member 300 may extend in parallel to a predetermined length from the outlet 230 of the hopper body 200 to the flow space 220 .

For example, as shown in FIGS. 1 to 3 , at least a portion of each lower portion of the two anti-blocking members 300 may be attached to the inside of the outlet 230 of the hopper body 200 so that they face each other. Also, the two anti-blocking members 300 may extend parallel to each other by a predetermined length from the outlet 230 of the hopper body 200 to the flow space 220 . Accordingly, while the material MR flows through the flow space 220 of the hopper body 200 and is discharged through the outlet 230 of the hopper body 200, the material MR flows in the outlet 230 of the hopper body 200. Each part of the two anti-blocking members 300 extending into the space 220 may guide the flow of the material MR to be dispersed. The length of each of the two blockage prevention members 300 extending in parallel from the outlet 230 of the hopper body 200 to the flow space 220 is not particularly limited, and the flow of the material MR can be guided to be dispersed. Any length is possible as long as it is possible. In addition, the number of occlusion prevention members 300 is not particularly limited, and any number is possible.

In the hopper according to the second embodiment of the present invention, the opposite end of the outlet 230 of the hopper body 200 of the blockage prevention member 300 may be connected by a connecting member (CM).

As shown in FIG. 4 , ends opposite to the outlet 230 of the hopper body 200 of the two anti-blocking members 300 may be connected by a connecting member CM positioned horizontally. For example, the two anti-blocking members 300 and the connecting member CM are integrally positioned so that the opposite end of the two anti-blocking members 300 to the outlet 230 of the hopper body 200 is horizontally positioned ( CM) can be connected. In this case, one side and the other side of the anti-blocking member 300 are attached to the inside of the outlet 230 of the hopper body 200 to face each other, and are equally spaced apart from the outlet 230 of the hopper body 200 by a predetermined distance. Two parts of the anti-blocking member 300 may be bent or bent to form the connecting member CM. However, a configuration in which an end opposite to the outlet 230 of the hopper body 200 of the blockage prevention member 300 is connected by the connecting member CM is not particularly limited.

In the hopper according to the third embodiment of the present invention, the opposite end of the outlet 230 of the hopper body 200 of the blockage prevention member 300 may be connected in contact with each other.

As shown in FIGS. 6 and 7 , ends opposite to the outlet 230 of the hopper body 200 of the two anti-blocking members 300 may be connected to each other in contact with each other. For example, the opposite ends of the outlet 230 of the hopper body 200 of the two anti-blocking members 300 may contact each other and be connected by an adhesive. In addition, since the two anti-blocking members 300 and the connecting member CM are integrated, the ends opposite to the outlet 230 of the hopper body 200 of the two anti-blocking members 300 may contact and be connected to each other. In this case, one side and the other side of the anti-blocking member 300 are attached to the inside of the outlet 230 of the hopper body 200 to face each other, and are separated from the outlet 230 of the hopper body 200 by a predetermined distance to prevent clogging. Portions of member 300 may be bent or bent. However, the configuration in which the ends opposite to the outlet 230 of the hopper body 200 of the anti-blocking member 300 come into contact with each other and are connected is not particularly limited.

Meanwhile, the diameter DO of the outlet 230 of the hopper body 200 may be 2 to 10 times less than the length LM of the material MR (see FIG. 5). When the diameter DO of the outlet 230 of the hopper body 200 is smaller than twice the length LM of the material MR, even by the clogging preventing member 300, the material MR is removed from the hopper body ( 200 cannot be prevented from blocking the outlet 230. In addition, when the diameter DO of the outlet 230 of the hopper body 200 is greater than 10 times the length LM of the material MR, even if there is no blockage prevention member 300, the material MR is formed in the hopper body. Do not block outlet 230 of 200.

As described above, if the hopper according to the present invention is used, it is possible to prevent the exit of the hopper from being blocked when the material is discharged through the exit of the hopper with a relatively simple configuration and cost, and even in a relatively small hopper, the material When discharged through the outlet of the hopper, it is possible to prevent the outlet of the hopper from being blocked by the material.

The hopper described above is not limited to the configuration of the above-described embodiment, and the above embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

INDUSTRIAL APPLICABILITY The present invention is useful not only in processes for melting and processing plastic materials such as extrusion and injection, but also in any other technical field for supplying raw materials.

Claims

A hopper body including an inlet into which the material is introduced, a flow space through which the material injected into the inlet flows, and an outlet through which the material flowing through the flow space is discharged; and

When the substance is discharged through the outlet, at least one anti-blocking member prevents the outlet from being blocked by the substance.

Including,

The hopper at least a part of the blockage prevention member is attached to the outlet.
According to claim 1,

The blockage prevention member is a hopper extending in parallel with a predetermined length from the outlet to the flow space.
According to claim 2,

A hopper connected to an end opposite to the outlet of the blockage prevention member by a connecting member.
According to claim 1,

The hopper is connected to the end opposite to the outlet of the blockage prevention member in contact with each other.
According to claim 1,

A hopper in which the aspect ratio (length to diameter ratio) of the material is 4 or more.
According to claim 5,

Hopper wherein the diameter of the outlet is 2 to 10 times the length of the material.