KR20170033580A - Hopper for feeding raw material - Google Patents

Hopper for feeding raw material Download PDF

Info

Publication number
KR20170033580A
KR20170033580A KR1020150131498A KR20150131498A KR20170033580A KR 20170033580 A KR20170033580 A KR 20170033580A KR 1020150131498 A KR1020150131498 A KR 1020150131498A KR 20150131498 A KR20150131498 A KR 20150131498A KR 20170033580 A KR20170033580 A KR 20170033580A
Authority
KR
South Korea
Prior art keywords
sealing means
raw material
hopper
fixed
sealing
Prior art date
Application number
KR1020150131498A
Other languages
Korean (ko)
Other versions
KR101765598B1 (en
Inventor
김종윤
김병한
Original Assignee
주식회사 포스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR1020150131498A priority Critical patent/KR101765598B1/en
Publication of KR20170033580A publication Critical patent/KR20170033580A/en
Application granted granted Critical
Publication of KR101765598B1 publication Critical patent/KR101765598B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/26—Hoppers, i.e. containers having funnel-shaped discharge sections
    • B65D88/28—Construction or shape of discharge section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Details (AREA)

Abstract

The present invention relates to a hopper for supplying a raw material to a facility requiring a vacuum state, such as a vacuum decarburization facility, comprising: a driving means variable in a hopper; A plurality of sealing means fixed to the end of the driving means and fixed to be spaced apart from each other; And a raw material supply port at a lower end of the hopper to form sealing surfaces in contact with the sealing means.

Description

Hopper for feeding raw material

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hopper for feeding a raw material, and more particularly, to a hopper for supplying a raw material to a vacuum condition requiring a vacuum condition such as a vacuum decarburization facility.

Many facilities have been used in the field to treat raw materials and / or additives under a certain atmosphere, especially under vacuum conditions. For example, in a vacuum degassing facility such as an RH degassing refining facility in which molten steel is refluxed to remove impurity gas contained in molten steel to homogenize the components of the molten steel, in the process of homogenizing molten steel components, In some cases, it may be required to add a raw material, which is also referred to as an "auxiliary raw material" depending on the amount of use, hereinafter referred to as "raw material").

Generally, a steel product is firstly refined by charging a molten iron obtained by melting iron ore in a furnace, and then subjected to secondary refining by transferring the steel to a vacuum decarburizing facility after ladle pouring, By continuous casting.

The low carbon steel refers to a steel having a carbon content of 0.02 to 0.05% in the molten steel. In order to produce such low carbon steel, alloy iron is injected in accordance with the target component value of the steel in the conversion process. In order to secure the cleanliness of the steel, After that, the casting operation should be carried out to the performance process. In the converter, charcoal and scrap iron are charged in the converter, oxygen is blown through the oxygen lance to refine the molten steel, and oxygen in the molten steel is contained in an amount of about 400 to 900 ppm.

On the other hand, for steel grades having a converter end carbon content of less than 0.026%, they are treated by the lubrication method (light treatment lubrication method) in which deoxidization is not carried out during the conversion laminating operation. In addition, for steel types having a carbon content of 0.026% or more at the converter end point, aluminum is treated during the conversion ladle operation and deoxidation is performed to remove oxygen. In other words, aluminum deoxidation according to oxygen in steel and iron-manganese (Fe-Mn) such as alloy iron are injected in order to adjust the target component value of the steel in the course of running in the converter.

As described above, in order to ensure the cleanliness of the quality of molten steel after completion of the converter feeding operation, the degassing treatment is performed for fine adjustment of the chemical components in the molten steel, separation of the nonmetallic inclusion separator, and temperature equalization. In the degassing process, the molten steel is refluxed by using a vacuum tank. At this time, cooling and heating operations must be performed in order to adjust the temperature to a suitable temperature for the continuous casting operation.

Fig. 1 schematically shows a vacuum decarburization facility. 1, the vacuum tank 1 is provided with an exhaust pipe 2 for exhausting the gas inside the vacuum tank 1 and a raw material M into the vacuum tank 1, that is, And a hopper 4 for supplying the raw material M is connected to the raw material supply pipe 3. A raw material supply port is formed at the lower end of the hopper 4 so as to be repeatedly opened and closed by a sealing means 5 and the sealing means 5 is connected to a driving means such as a hydraulic and / Is actuated by means (6). The operating means is driven by a cylinder 6a and a piston 6b which is fixed to the cylinder 6a so as to be variable according to the pressure state of the cylinder 6a and is driven to open and close the raw material supply port And the sealing means 5 can be integrally fixed to the end of the piston 6b. An exhaust pipe 8 may be connected to the hopper 4 and an exhaust valve 8a may be installed in the exhaust pipe 8. The hopper 4 may be further provided with a second hopper 9 having the same and / or similar structure as the hopper 4 in order to rapidly supply the raw material and to rapidly evacuate the inside of the vacuum chamber 1 have.

When treating the molten steel using the vacuum tank 1 having the above-described structure, the ladle in which molten steel is generally loaded is lifted up to the ladle until the vacuum tank 1 is immersed in the molten steel, (1) is evacuated through an exhaust pipe (2) to a vacuum state. At this time, a vacuum means including a water ring pump and steam is normally connected to the exhaust pipe 2 as a vacuum means for making the vacuum chamber 1 to be in a vacuum state. By the operation of the vacuum means, The molten steel deposited on the ladle passes through the bubble rising pipe at the lower portion of the vacuum tank 1 and rises to the vacuum tank 1 where it is degassed and refluxed. At this time, an inert gas such as argon gas is injected into the bubble rising pipe of the vacuum chamber 1 so that the specific gravity of the molten steel is lowered so that the molten steel is sucked into the vacuum chamber 1 by the vacuum force of the vacuum chamber 1 . Subsequently, the molten steel sucked into the vacuum tank 1 is charged with a raw material M such as alloyed iron to homogenize the molten steel components and perform degassing treatment. On the other hand, the molten steel subjected to the degassing treatment in the vacuum tank 1 has a high specific gravity and is refluxed to the ladle through the downfalling pipe under the vacuum tank 1.

Thus, one of the important process parameters in the degassing process is to make the inside of the vacuum chamber 1 completely in a vacuum state.

However, as shown in FIG. 1, there is a considerable problem in the sealing structure of the hopper (also called a "vacuum lock chamber") in which the raw material M is charged.

That is, as shown exemplarily in Fig. 1, iron alloy which is the raw material M deposited on the hopper 4 is driven by driving means, that is, the cylinder 6a and the piston 6b connected thereto, 5) are opened to seal the sealing means 5 after the injection of the ferroalloy. In this sealing structure of the hopper 4, problems that hinder the sealing are often encountered.

1, the raw material supply port at the lower end of the hopper 4 is repeatedly opened and closed by the sealing means 5, so that the foreign substances S separated from the raw material M It is impossible to make intimate contact between the raw material supply port and the sealing means 5 due to the accumulation of foreign matter S while accumulating between the raw material supply port and the sealing means 5, It often happens. Failure of the sealing due to the presence of the foreign matter S can adversely affect the vacuum formation of the vacuum chamber 1 or the maintenance of a sufficient vacuum state so that the sealing means 5 is deformed or pierced, ) Must be replaced. The high temperature atmosphere generated during the processing of the molten steel in the vacuum tank 1 directly affects the sealing means 5, thereby causing a problem that the sealing means 5 is melted and the sealing efficiency is lowered. to be.

Korean Utility Model Registration No. 20-0177696 Korean Patent Laid-Open Publication No. 10-2010-0046482

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a vacuum cleaner having a plurality of sealing means, In addition to the operation and / or in connection with the operation of the sealing means, it is also possible to provide a hopper for raw material supply which is capable of repeatedly cleaning the area in contact with the sealing means and also preventing the sealing means from being exposed to the hot atmosphere It has its purpose.

According to an aspect of the present invention, which is designed to achieve the above-mentioned object, there is provided a driving apparatus comprising: driving means fixed to be variable within a hopper; A plurality of sealing means fixed to the end of the driving means and fixed to be spaced apart from each other; And a raw material supply port for contacting the sealing means at the lower end of the hopper to form sealing surfaces.

Wherein the raw material supply port further comprises a thick portion having an upper inclined surface inclined at a first angle alpha with respect to a vertical direction with respect to the paper surface and lower inclined surfaces inclined at a second angle beta, One of the sealing means may be fixed to the driving means such that the upper inclined face of the thicker portion and the sealing means of the other one of the plurality of sealing means come into contact with the lower inclined face of the thicker portion, respectively.

The first sealing means is fixed to the driving means in the order of the moving direction of the driving means, the second sealing means is fixed so as to precede the first sealing means, and the third sealing means is further provided so as to precede the second sealing means Can be fixed.

The first sealing means may be made of a hard heat-resistant material.

The first sealing means may be formed such that its edge has an inclined surface.

The second sealing means may be made of a heat-resistant material having elasticity.

The third sealing means may include a core made of a heat-resistant material having elasticity and a plurality of fibrous materials integrally fixed to an outer circumferential surface of the core.

The driving means may further include a rotating means for rotating the third sealing means.

According to the hopper for feeding a raw material according to the present invention, it is possible to provide a plurality of sealing means to ensure formation of a vacuum atmosphere, and it is also possible to provide a hopper for supplying raw materials separately and / Or in conjunction with the operation of the sealing means, it is possible to provide the effect of repeatedly cleaning the area in contact with the sealing means and also to prevent the sealing means from being exposed to the high temperature atmosphere.

1 is a schematic view showing a conventional hopper for feeding a raw material and a vacuum tank to which the hopper is connected.
FIG. 2 is a view schematically showing a hopper for feeding a raw material according to the present invention and a vacuum tank to which the hopper is connected. FIG. 2 shows a state in which a raw material feed port is opened so as to feed raw material through a raw material feed port at the lower end of the hopper Fig.
FIG. 3 is a schematic view illustrating a raw material supply hopper and a vacuum tank to which the hopper is connected according to the present invention, and shows a state in which the raw material supply port at the lower end of the hopper is closed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figs. 2 and 3, the hopper for feeding a raw material according to one aspect of the present invention includes: a driving means 6 which is fixed in a hopper 4 so as to be variable; A plurality of sealing means (11, 12, 13) fixed to the end of the driving means (6) and fixed to be spaced apart from each other; And a raw material supply port (21) for forming a plurality of sealing surfaces in contact with the sealing means (11, 12, 13) at a lower end of the hopper (4).

The hopper is generally a container having a funnel shape such as a pyramid or a conical shape, and has a discharge port (raw material supply port) at the bottom, a powdery or granular form at the top thereof is temporarily stored therein, , It is used during the transportation of a small object or a small object having a large amount of water, and often serves to adjust the amount of transportation before and after. It has a capacity capable of coping with the fluctuation of the carrying amount, and it is often made to be able to release a predetermined amount from the lower part. In the present invention, the hopper 4 smoothly and intermittently supplies the raw material to the vacuum tank 1 via the hopper 4, and simultaneously opens and closes the vacuum tank 1 so as to facilitate formation of a vacuum environment in the vacuum tank 1 It means to do the function. That is, the hopper 4 is configured to intermittently open and close the raw material supply port 21 formed at the lower end thereof to supply the raw material into the vacuum chamber 1 through the raw material supply port 21 when the raw material supply port 21 is opened, The inside of the vacuum chamber 1 is cut off from the outside air when the raw material supply port 21 is closed, thereby facilitating the formation of a vacuum atmosphere, thereby performing a desired process. 2 and 3, the raw material supply port 21 is connected to the vacuum tank 1 through a raw material supply pipe 3, and the vacuum tank 1 is provided with An exhaust pipe 2 for forming a vacuum atmosphere may be further connected to the exhaust pipe 2. An exhaust means (not shown) such as a vacuum pump may be further connected to the exhaust pipe 2. [

The driving means 6 is provided with a means for opening and closing the raw material supply port 21 of the hopper 4 by varying the sealing means 11, 12, 13 which are integrally fixed to the lower end portion of the hopper 4, do. In the present invention, it is understood that the driving means 6 can be used as long as it can operate the sealing means 11, 12 and 13 to open and close the raw material supply port 21. For example, , The driving means 6 includes a cylinder 6a operated by hydraulic pressure and / or pneumatic pressure and a piston 6b which is fixed to the cylinder 6a so as to be variable according to the pressure state of the cylinder 6a can do.

The sealing means (11, 12, 13) are fixed to the end of the driving means (6), and are fixed so as to be spaced apart from each other. The sealing means 11, 12 and 13 are fixed to the ends of the driving means 6 and are driven by the driving means 6 to move the cylinder 6a and the piston 6a, The sealing means 11, 12 and 13 can open the raw material supply port 21 when the piston 6b is drawn into the cylinder 6a by the driving means 6 composed of a combination of the sealing means 11, Alternatively, as shown in Fig. 3, the sealing means 11, 12 and 13 can close the raw material supply port 21 when the piston 6b is drawn out of the cylinder 6a. Therefore, it is possible to repeatedly open and close the raw material supply port 21 by the repetitive operation of the drive means 6, whereby the raw material M supplied temporarily into the hopper 4 and accommodated therein Can be supplied to the vacuum chamber 1 intermittently.

According to another aspect of the present invention, the raw material supply port 21 is formed with an upper inclined surface 21b inclined at a first angle alpha with respect to a vertical direction with respect to the paper surface and an inclined upper surface 21b inclined at a second angle beta Further comprising a thick portion 21a having a lower inclined surface 21c and wherein the sealing means of any one of the plurality of sealing means 11, 12 and 13, i.e., as shown in Figures 2 and 3, The sealing means 11 is provided on the upper inclined surface 21b of the thicker portion 21a and on the sealing means of the other of the plurality of sealing means 11, 12 and 13, The second sealing means 12 can be fixed to the driving means 6 so as to be in contact with the lower inclined surface 21c of the thick portion 21a. The first angle? And the second angle? Are not limited, but may be within a range of preferably 5 to 85 degrees, more preferably 30 to 60 degrees, and most preferably 40 to 50 degrees. If the angle is less than 5 DEG or more than 85 DEG, there may be a problem that the inclination is hardly formed or formed too steeply so that a great effect can not be given to an increase in the contact area or the like. Further, the description of the angle of the inclined surface may be applied to other inclined surfaces described later in the same and / or similar manner, and repetitive description will be avoided.

The first sealing means 11 is fixed to the driving means 6 in the order of the moving direction of the driving means 6, particularly the piston 6b of the driving means 6, The second sealing means 12 can be fixed so as to precede and the third sealing means 14 can be further fixed so as to precede the second sealing means 12. [ It should be understood, however, that these are merely for the sake of convenience of description and that they can be fixed with different positions relative to each other.

Preferably, the first sealing means 11 fixed to the uppermost position of the lower end of the driving means 6 may be made of a hard heat-resistant material. The first sealing means 11 functions to repeatedly open and close the raw material supply port 21 of the hopper 4 to intermittently supply the raw material M in the hopper 4 to the vacuum chamber 1 , It can be understood that it performs the same and / or similar function as the sealing means in the conventional hopper. Examples of the hard and heat resistant material include metals, ceramics, and vulcanized rubber. However, it should be understood that the present invention is not intended to be limited thereto.

In particular, it is preferable that the first sealing means 11 is formed so that its edge has an inclined surface. Therefore, as shown in Figs. 2 and 3, the first sealing means 11 may be formed such that its edge preferably has an upper inclined surface 11a and a lower inclined surface 11b. The lower inclined surface 11b of the first sealing means 11 can make surface contact with the upper inclined surface 21b of the thick portion 21a of the raw material supply port 21, It is possible to satisfactorily maintain the airtightness of the sealing surface formed by the surface contact between the lower inclined surface 11b of the raw material supply port 21 and the upper inclined surface 21b of the thick portion 21a of the raw material supply port 21 Therefore, it is possible to easily form a vacuum atmosphere in the vacuum chamber 1. The upper inclined surface 11a of the first sealing means 11 prevents the debris of the raw material M and / or the raw material M and the crushed fine crushed material thereon, And ultimately discharges through the raw material supply port 21 of the hopper 4. [0064] As shown in FIG.

Preferably, the second sealing means 12, which is fixed below the first sealing means 11 fixed at the uppermost position of the lower end of the driving means 6, may be made of a heat-resistant material having elasticity . The second sealing means 12 is fixed so as to be spaced apart from the first sealing means 11. For this purpose, for example, as shown in Figs. 2 and 3, the first sealing means 11 The spacing distance between the first sealing means 11 and the second sealing means 12 is preferably set so that the spacing distance between the first sealing means 11 and the second sealing means 12 is greater than the distance between the first sealing means 11 and the second sealing means 12, It may be a length corresponding to the length between the upper inclined surface 21b and the lower inclined surface 21c of the thick portion 21a of the raw material supply port 21. [ Thereby, when the first sealing means 11, preferably the lower inclined surface 11b of the first sealing means 11 is brought into contact with the upper inclined surface 21b of the thick portion 21a, The sealing means 12 can be brought into contact with the lower inclined surface 21c of the thick portion 21a so that the material supply port 21 can be more surely sealed, 1 can be formed more easily in a vacuum atmosphere. The second sealing means 12 may be made of an elastic heat resistant material such as vulcanized rubber so that the second sealing means 12 can be made of a material having a lower inclined surface 21c The raw material supply port 21 and especially the thick portion 21a of the raw material supply port 21 are rubbed to pass through the raw material supply port 21, It is possible to sweep debris of the raw material M and / or the raw material M that may remain in the thick portion 21a of the raw material supply port 21 and the rupture of the raw material or the like so that they can be removed, It is possible to prevent accumulation and / or accumulation of debris of the raw material (M) and / or the raw material (M) and the like so that the clean state can be maintained. 2 and 3, the side surface of the second sealing means 12 is shown flat so that the second sealing means 12 and the lower inclined surface 21c of the thick portion 21a The second sealing means 12 may be formed to have an upper inclined surface similar to the first sealing means 11 so that the second sealing means 12 can be formed to have the same inclination angle as that of the first sealing means 11, The upper inclined surface of the thick portion 21a can be brought into surface contact with the lower inclined surface 21c of the thick portion 21a, thereby making it possible to more reliably seal the material supply port 21, It is possible to make it possible to make the vacuum atmosphere of the vacuum chamber 1 more easily.

Preferably, the third sealing means (14) fixed to the lower side of the second sealing means (12) fixed to the lower end of the driving means (6) comprises a core material of a heat resistant material having elasticity, As shown in FIG. The third sealing means 14 having such a configuration is fixed to the lowermost end of the driving means 6, preferably the piston 6b of the driving means 6, The surface of the raw material supply port 21 and / or the thick portion 21a is rubbed with the portions located around the path through which the third sealing means 14 passes by the reciprocating motion, Can be performed. There is no limitation on the material constituting the core material, but preferably, the core material can be made of a nonwoven fabric obtained by processing (for example, needle punching) natural fibers, synthetic fibers and / or a mixture thereof. Further, a plurality of fibrous materials are integrally fixed to the outer circumferential surface of the core material to increase the contact area when rubbing against the raw material supply port 21 and / or the thick portion 21a, Whereby it is possible to sweep debris of the raw material (M) and / or the raw material (M) that may remain on their surfaces or a crush of the raw material and remove them. Therefore, debris of the raw material (M) and / or the raw material (M) can be prevented from accumulating and / or accumulating, so that a clean state can be maintained.

Particularly, in order to enhance the cleaning effect by the third sealing means 14, preferably, the driving means 6 further includes a rotating means (not shown) for rotating the third sealing means 14 . In order to rotate the third sealing means 14, a separate rotating means may be added to the driving means 6, but otherwise the portion corresponding to the piston directly rotates without using a crank mechanism A rotary piston machine of the type that performs the same cycle as a normal reciprocating piston machine can be used. Particularly, a rotating piston mechanism, a revolving piston mechanism, a rotary piston mechanism, or the like can be implemented according to the kinematic type of the rotary piston mechanism.

Although the hopper for supplying raw materials according to the present invention having the above-described configuration has been described with respect to a single hopper, as shown in Figs. 2 and 3, the same and / Or a second hopper 9 having a similar function.

2, the driving means 6 is driven, that is, the piston 6b of the driving means 6 is driven by the driving means 6, The first sealing means 11 to the third sealing means 14 come out of the raw material supply port 21 and come into contact with the raw material supply port 21 The raw material M in the hopper 4 can be introduced into the vacuum chamber 1. [ The piston 6b of the drive means 6 is moved to the outside of the cylinder 6a after the predetermined amount of the raw material M is charged, The first sealing means 11 to the third sealing means 14 enter the raw material supply port 21 to set the contact state with the raw material supply port 21, Can be prevented from being further injected into the vacuum chamber 1. In this case, Therefore, the hopper 4 can be further filled with the raw material M, and the vacuum tank 1 is evacuated to a vacuum atmosphere for performing an appropriate process . The first sealing means 11 to the third sealing means 14 closely hold the contact with the raw material supply port 21 so that the lower inclined surface 11b of the first sealing means 11 Is in surface contact with the upper inclined surface 21b of the thick portion 21a of the raw material supply port 21 and the second sealing means 12 is in surface contact with the lower inclined surface 21c of the thick portion 21a, And the third sealing means 14 makes a surface contact with the inner wall of the raw material supply pipe 3 connecting the raw material supply port 21 and the vacuum tank 1, It is possible to facilitate the formation of the vacuum atmosphere of the vacuum chamber 1 by making it possible to form the surfaces by the second sealing means 12 and the third sealing means 14 (M) and / or the like to the raw material supply port (21), the thick portion (21a) of the raw material supply port (21) Fees may perform a cleaning function to remove so that such (M) crushed flakes or raw material not remain. Particularly, the third sealing means 14 is arranged so that the first sealing means 11 and / or the second sealing means 12 can be directly heated to the heat and / or the reactive gas atmosphere which can be lifted from the vacuum tank 1 As shown in FIG. In particular, the third sealing means 14 is rotatably fixed, and rotation of the third sealing means 14 makes it possible to perform the cleaning function as described above more reliably.

1: Vacuum tank 2: Exhaust pipe
3: feed pipe 4: hopper
5: sealing means 6: driving means
6a: cylinder 6b: piston
8: Exhaust pipe 8a: Exhaust valve
9: second hopper 11: first sealing member
11a: upper inclined surface 11b: lower inclined surface
12: second sealing member 13: connecting means
14: third sealing member 21: raw material supply port
21a: thicker portion 21b: upper inclined surface
21c: lower inclined surface
M: raw material S: foreign matter

Claims (8)

Drive means for being fixed to be variable within the hopper;
A plurality of sealing means fixed to the end of the driving means and fixed to be spaced apart from each other; And
A raw material supply port at a lower end of the hopper to contact the sealing means to form sealing surfaces;
And a hopper for feeding the raw material. The method according to claim 1,
Further comprising a thick portion having an upper inclined surface inclined at a first angle alpha with respect to a direction perpendicular to the paper surface and a lower inclined surface inclined at a second angle beta, Characterized in that one of the sealing means is fixed to the driving means such that the sealing means of the other one of the plurality of sealing means and the upper sloping face of the thicker part come into contact with the lower sloping face of the thicker part, Hopper for use. The method according to claim 1,
The first sealing means is fixed to the driving means in the order of the moving direction of the driving means, the second sealing means is fixed so as to precede the first sealing means, and the third sealing means is further arranged so as to precede the second sealing means Characterized in that the hopper is fixed. The method of claim 3,
Wherein the first sealing means is made of a hard heat-resistant material. The method according to claim 3 or 4,
Wherein the first sealing means is formed so that its edge has an inclined surface. The method of claim 3,
Wherein the second sealing means is made of a heat-resistant material having elasticity. The method of claim 3,
Wherein the third sealing means comprises a core of a heat-resistant material having elasticity, and a plurality of fiber materials integrally fixed to an outer circumferential surface of the core material. The method of claim 3,
Further comprising rotating means for rotating said third sealing means by said driving means.
KR1020150131498A 2015-09-17 2015-09-17 Hopper for feeding raw material KR101765598B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150131498A KR101765598B1 (en) 2015-09-17 2015-09-17 Hopper for feeding raw material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150131498A KR101765598B1 (en) 2015-09-17 2015-09-17 Hopper for feeding raw material

Publications (2)

Publication Number Publication Date
KR20170033580A true KR20170033580A (en) 2017-03-27
KR101765598B1 KR101765598B1 (en) 2017-08-23

Family

ID=58497042

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150131498A KR101765598B1 (en) 2015-09-17 2015-09-17 Hopper for feeding raw material

Country Status (1)

Country Link
KR (1) KR101765598B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110406834A (en) * 2019-07-08 2019-11-05 扬州安泰威合金硬面科技有限公司 One kind being used for Co-based alloy powder coating metal powder material storage device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200177696Y1 (en) 1999-11-18 2000-04-15 포항종합제철주식회사 Sealing apparatus of hopper of vod for supplying material
KR20100046482A (en) 2008-10-27 2010-05-07 주식회사 포스코 Apparatus of putting ferroalloy

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010164164A (en) * 2009-01-19 2010-07-29 Stanley Electric Co Ltd On-off valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200177696Y1 (en) 1999-11-18 2000-04-15 포항종합제철주식회사 Sealing apparatus of hopper of vod for supplying material
KR20100046482A (en) 2008-10-27 2010-05-07 주식회사 포스코 Apparatus of putting ferroalloy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110406834A (en) * 2019-07-08 2019-11-05 扬州安泰威合金硬面科技有限公司 One kind being used for Co-based alloy powder coating metal powder material storage device

Also Published As

Publication number Publication date
KR101765598B1 (en) 2017-08-23

Similar Documents

Publication Publication Date Title
KR101279447B1 (en) Flexible minimum energy utilization electric arc furnace system and processes for making steel products
JP4225484B2 (en) Coke drum discharge system
CN102183150A (en) Quick feeding device for feeding waste steel into electric furnace and feeding method thereof
KR101765598B1 (en) Hopper for feeding raw material
US9551045B2 (en) Flexible minimum energy utilization electric arc furnace system and processes for making steel products
CN106143958A (en) A kind of block-proof type micro powder filling machine
KR101450966B1 (en) Heat treatment apparatus for powder material
EP3152335B1 (en) Station and method for transferring molten metal from a melting furnace into a transport crucible, as well as an arrangement and a system with such a station
CN106871151A (en) A kind of automatic discharge unit for smelting fuel
US20010007382A1 (en) Apparatus and method for tapping a furnace
CN106735257A (en) A kind of VN alloy reducing mechanism
JP2015213852A (en) Container internal pressure adjustment mechanism in container rotation type mixer
CN205825705U (en) A kind of follow-on smelting furnace
KR100596674B1 (en) Apparatus for degreasing solid parts
CN207195114U (en) A kind of petroleum coke closed conveying machine
JP2010012409A (en) Heat treatment device/method
KR101034355B1 (en) Apparatus of putting ferroalloy
CN105423759B (en) A kind of reduction furnace bottom discharge device and its discharge method
CN205954048U (en) Molten iron desulphurization's heat -proof device of discharging fume
KR101687292B1 (en) Desulfurization device for ladle
CN205482371U (en) Furnace distribution device
CN102703646A (en) Device and method for continuously feeding materials during vacuum smelting
CN210787589U (en) Raw material pretreatment device for refining purifying agent
CN214327102U (en) Full-automatic filling machine device for washing and protecting series products
CN216071624U (en) Improved structure of dead weight type valve plate split flap valve

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment
X701 Decision to grant (after re-examination)
GRNT Written decision to grant