JPS6152206B2 - - Google Patents
Info
- Publication number
- JPS6152206B2 JPS6152206B2 JP58184626A JP18462683A JPS6152206B2 JP S6152206 B2 JPS6152206 B2 JP S6152206B2 JP 58184626 A JP58184626 A JP 58184626A JP 18462683 A JP18462683 A JP 18462683A JP S6152206 B2 JPS6152206 B2 JP S6152206B2
- Authority
- JP
- Japan
- Prior art keywords
- spherical
- plate
- spherical plate
- throat
- hopper
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 230000002265 prevention Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/20—Arrangements of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/10—Charging directly from hoppers or shoots
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/10—Charging directly from hoppers or shoots
- F27D2003/105—Charging directly from hoppers or shoots using shutters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Sliding Valves (AREA)
- Blast Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Basic Packing Technique (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は流量調節弁開閉部の構造に関するもの
であり、詳しくは高炉上部のホツパーを高炉の炉
芯と同芯に設けた高炉炉頂装入装置におけるホツ
パー底部に設置された流量調節弁開閉部の構造に
関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to the structure of a flow control valve opening/closing section, and more specifically to a blast furnace top charging device in which a hopper at the top of a blast furnace is provided concentrically with the core of the blast furnace. This relates to the structure of the flow rate control valve opening/closing part installed at the bottom of the hopper.
従来技術
高炉炉頂装入装置として高炉炉内に旋回シユー
トを有するタイプのもの、即ちベルレス式炉頂装
入装置が実用化されている。このベルレス式炉頂
装入装置は特公昭48−34082号公報に示されてお
り、第１図の如く高炉１の上部に２個のホツパー
２，２が並設されていたから、ホツパー内の原料
を垂直シユート６、旋回シユート３を介して炉内
へ装入する際、ホツパー２から垂直シユート６ま
での間が傾斜しているために流下する原料に水平
方向の分力が生じ、旋回シユート３の傾動角度を
同一としても炉内へ原料が円輪状に装入されず、
ゆがんだ形状になつてしまい、高炉操業上種々の
問題を生じるので改善が望まれていた。BACKGROUND ART As a blast furnace top charging device, a type having a rotating chute in a blast furnace, that is, a bellless type top charging device has been put into practical use. This bellless type furnace top charging device is shown in Japanese Patent Publication No. 48-34082, and as shown in Fig. 1, two hoppers 2, 2 are installed side by side at the top of the blast furnace 1, so that the raw material in the hoppers can be When charging the raw material into the furnace via the vertical chute 6 and the rotating chute 3, horizontal force is generated on the flowing material due to the slope between the hopper 2 and the vertical chute 6, Even if the tilting angle is the same, the raw materials will not be charged into the furnace in a circular shape.
Since the shape becomes distorted and causes various problems in blast furnace operation, improvements have been desired.
この問題を解決するために炉頂部に設けるホツ
パーを炉芯と同芯に設けた炉頂装入装置が提案さ
れた。例えば特公昭57−48618号公報には高炉の
頂部に炉芯と同芯とした同芯円状の２個のホツパ
ーを設けるタイプのものと、第２図のようにホツ
パー２Ａ，２Ｂを垂直に重ねて設けるタイプの炉
頂装入装置が開示されており、ホツパー２Ａへ原
料を装入する際このホツパーを回転させてホツパ
ー内円周方向における原料の粒度偏析をなくする
という技術が紹介されている。また特開昭56−
87613号公報には第３図の如く炉芯と同芯に設け
たホツパー２Ａ，２Ｂの底部に炉芯を中心として
円形又は多角形状に開口面積を変更できる可変開
閉機構４を設けたベルレス炉頂装入装置が開示さ
れている。図中５，５Ａはシール弁である。 In order to solve this problem, a furnace top charging device was proposed in which a hopper provided at the top of the furnace was installed concentrically with the furnace core. For example, in Japanese Patent Publication No. 57-48618, there is a type in which two concentric hoppers are installed at the top of the blast furnace, which are concentric with the furnace core, and a type in which hoppers 2A and 2B are placed vertically as shown in Figure 2. A stacked type furnace top charging device is disclosed, and a technology is introduced in which the hopper is rotated when charging raw materials into the hopper 2A to eliminate grain size segregation of the raw materials in the circumferential direction inside the hopper. There is. Also, JP-A-56-
Publication No. 87613 discloses a bellless furnace top which is equipped with a variable opening/closing mechanism 4 that can change the opening area in a circular or polygonal shape centering on the furnace core at the bottom of hoppers 2A and 2B provided concentrically with the furnace core as shown in Figure 3. A charging device is disclosed. In the figure, 5 and 5A are seal valves.
このように、炉頂部に設置するホツパーを高炉
の炉芯と同芯に設置すること、及びホツパー底部
から原料を排出する際常に原料流の中心を炉芯に
一致させることによつてベルレス式炉頂装入装置
による炉内への原料装入は円周方向で偏りがなく
行えるようになつた。そして、前記特開昭56−
87613号公報に記載されている可変開閉機構４に
ついては、実開昭57−114698号公報に非常に実用
性の高い装置が開示されている。 In this way, by installing the hopper installed at the top of the furnace concentrically with the furnace core of the blast furnace, and by always aligning the center of the raw material flow with the furnace core when discharging raw material from the bottom of the hopper, a bellless type furnace can be created. Materials can now be charged into the furnace using the top charging device without any deviation in the circumferential direction. And, the above-mentioned Unexamined Patent Publication No. 1983-
Regarding the variable opening/closing mechanism 4 described in Japanese Utility Model Publication No. 87613, a highly practical device is disclosed in Japanese Utility Model Application Publication No. 57-114698.
即ち、第４図及び第５図に示すように、ホツパ
ー２Ｂ等の出口部に設けられている粒体用流量調
節弁７において、上記調節弁の弁板を、相重なる
２枚の球面板８Ａ，８Ｂで構成すると共に、それ
ぞれの球面板の一部をホツパー出口部の仮想中心
線１０を１点とする近似三角形状又は近似半円形
状に切欠き、これら切欠き弁板を相反する方向に
作動させることにより同一芯の開口が得られるよ
うに形成したことを特徴とする流量調節弁であ
る。図中９は球面板８Ａ，８Ｂの回動中心軸を示
す。この流量調節弁７はシンプルな構造で操作も
簡単であるため前記特開昭56−87613号公報に開
示されているタイプの炉頂装入装置、即ちホツパ
ーを炉芯と同芯にして垂直に設置したタイプのベ
ルレス式炉頂装入装置に採用されつつある。 That is, as shown in FIGS. 4 and 5, in the granule flow control valve 7 provided at the outlet of the hopper 2B, etc., the valve plate of the control valve is replaced by two overlapping spherical plates 8A. . This flow control valve is characterized in that it is formed so that openings with the same center can be obtained when operated. In the figure, 9 indicates the center axis of rotation of the spherical plates 8A, 8B. This flow rate control valve 7 has a simple structure and is easy to operate, so it is possible to use a furnace top charging device of the type disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 56-87613, i.e., the hopper is installed vertically with the hopper concentric with the furnace core. It is being adopted for the installed type of bell-less furnace top charging equipment.
発明の目的
ところが、この流量調節弁は摩耗の激しい苛酷
な使用条件のもとにあるため上、下部球面板８
Ａ，８Ｂは耐摩耗性の優れた金属でも40〜100mm
の厚さを必要とし、球面板８Ａ，８Ｂの曲率半径
もスロート出口の半径より大きな値としなければ
ならないために球面板自体が大型化し、このため
弁体のケーシングが大型化し、設備費の増大やホ
ツパー２Ｂにおける均排圧ガスの使用量増大及び
ダスト堆積量の増大といつた問題が生じてくる。
更に、球面板の厚さが大きいので、この厚さに起
因して上部球面板を摺接するスロート下端面は側
面からみて第６図に示すように段状に切欠部３０
が存在し、流量調節弁を開いた際にはこの切欠部
３０から原料がはみ出して球面板の側部上面へ乗
り、それが弁の開閉により下部球面板上の原料は
上部球面板先端部によつて押圧され、球面板の後
方上面に堆積するという問題が生じた。原料が球
面板の後方に堆積するとこの弁の開閉動作中に球
面板上からこぼれ落ちる心配があり、こぼれ落ち
た原料がシール弁５Ａ上に落下するとシール弁５
Ａとシート（図示せず）との間に原料の噛込みが
生じてシール性を阻害するという問題を惹起す
る。Purpose of the Invention However, since this flow control valve is used under harsh conditions that cause severe wear, the upper and lower spherical plates 8
A, 8B is 40 to 100 mm even if it is a metal with excellent wear resistance.
, and the radius of curvature of the spherical plates 8A and 8B must also be larger than the radius of the throat outlet, which increases the size of the spherical plates themselves, which increases the size of the casing of the valve body and increases equipment costs. Problems arise such as an increase in the amount of pressure equalizing gas used in the hopper 2B and an increase in the amount of dust deposited.
Furthermore, since the thickness of the spherical plate is large, due to this thickness, the lower end surface of the throat that slides into contact with the upper spherical plate has a stepped notch 30 as shown in FIG. 6 when viewed from the side.
exists, and when the flow control valve is opened, the raw material protrudes from this notch 30 and rides on the upper surface of the side of the spherical plate, and when the valve is opened and closed, the raw material on the lower spherical plate is transferred to the tip of the upper spherical plate. A problem arose in that the particles were pressed and deposited on the rear upper surface of the spherical plate. If the raw material accumulates behind the spherical plate, there is a risk of it falling off the spherical plate during the opening/closing operation of this valve, and if the spilled raw material falls onto the seal valve 5A, the seal valve 5
This causes a problem in that the raw material gets caught between A and the sheet (not shown), impeding sealing performance.
本発明は、このような問題を有利に解決するこ
とを目的とするものである。 The present invention aims to advantageously solve such problems.
発明の構成・作用 本発明を図面に基いて詳細に説明する。Structure and operation of the invention The present invention will be explained in detail based on the drawings.
本発明に係る流量調節弁は第４図及び第５図に
示すようにホツパー２Ｂ下部のスロート１５に取
りつけられ、相重なる球面板で近似三角形又は近
似半円形状に切欠かれた上部球面板８Ａ及び下部
球面板８Ｂとそれらの回動中心軸９と、その軸と
各球面板とを連結するアーム２０，２１とから成
つており、該軸９を中心として球面板８Ａ，８Ｂ
は相反する方向に回動することにより、上部球面
板８Ａと下部球面板８Ｂとから形成される近似正
方形の開口部１６を通してホツパー２Ｂ内の原料
が落下する。流量調節弁７は高炉炉頂装入装置に
使用されるため、取りつけられるホツパー２Ｂの
出口口径即ちスロート１５の口径は相当な大きさ
（外径約600〜1500ｍ／ｍ）となり、又弁体の厚み
も苛酷な摩耗使用条件のもとにあるため各球面板
８Ａ，８Ｂは相当の厚み（約40〜100ｍ／ｍ）を
有している。 As shown in FIGS. 4 and 5, the flow control valve according to the present invention is attached to the throat 15 at the bottom of the hopper 2B, and includes an upper spherical plate 8A cut out in an approximately triangular or approximately semicircular shape with overlapping spherical plates. It consists of a lower spherical plate 8B, a rotation center axis 9 thereof, and arms 20, 21 that connect the axis and each spherical plate, and the spherical plates 8A, 8B rotate around the axis 9.
By rotating in opposite directions, the raw material in the hopper 2B falls through the approximately square opening 16 formed by the upper spherical plate 8A and the lower spherical plate 8B. Since the flow rate control valve 7 is used in the blast furnace top charging device, the diameter of the outlet of the hopper 2B to which it is attached, that is, the diameter of the throat 15, is quite large (outer diameter of about 600 to 1500 m/m), and the diameter of the valve body is quite large. Each of the spherical plates 8A and 8B has a considerable thickness (approximately 40 to 100 m/m) because the spherical plates 8A and 8B are used under severe abrasion conditions.
しかしながら弁体の大型化および厚みの増大に
より結果として弁体のケーシング１９の大型化を
まねいている。即ち第６図及び第７図に示すよう
にスロート１５の口径に対して四角形もしくは円
形の開口部１６を上部球面板８Ａと下部球面板８
Ｂにより形成する際、斜線２２，２３で示した部
分、即ち球面板８Ａ及び８Ｂの側部がホツパー出
口より大きくはみ出ることになる。この場合、球
面板の厚みt1に相当する部分もはみ出し部に含ま
る。 However, the increased size and thickness of the valve body results in an increase in the size of the casing 19 of the valve body. That is, as shown in FIGS. 6 and 7, a rectangular or circular opening 16 is formed with respect to the diameter of the throat 15 between the upper spherical plate 8A and the lower spherical plate 8.
B, the portions indicated by diagonal lines 22 and 23, that is, the side portions of the spherical plates 8A and 8B, protrude beyond the hopper outlet. In this case, a portion corresponding to the thickness t 1 of the spherical plate is also included in the protruding portion.
本発明は球面板８Ａ及び８Ｂ自体を小型化した
ものであつて、球面板８Ａ，８Ｂの側部を切断す
ると共に、この切断によつて原料がスロート下方
両側部からはみ出るのを防止するためにこぼれ防
止板を設置したことを特徴とするものである。 The present invention miniaturizes the spherical plates 8A and 8B themselves, and cuts the sides of the spherical plates 8A and 8B, and prevents the raw material from protruding from both sides of the lower throat due to this cutting. It is characterized by the installation of a spill prevention board.
本発明に係る球面板８Ａ及び８Ｂは、第７図に
斜線２２，２３で示したスロート１５からはみ出
す球面板８Ａ及び８Ｂの側部、即ち両球面板の開
閉方向に対して90゜側の両側面を、l1の幅で鉛直
方向に切断した形状としたものである。このよう
な形状にすることにより球面板の幅が著しくせば
まり、これに伴つてケーシング１９も、球面板の
直径Ｄが1000ｍ／ｍ程度であれば球面板の開閉方
向に対して90゜側の方向について500〜1000ｍ／
ｍ程度小型化が可能となる。又、開閉方向に対し
ても第７図の斜線２４，２５で示す各球面板の後
方の領域を厚みt1に起因したl2の幅で鉛直方向に
切断した弁体の形状にすることにより、ケーシン
グは球面板の厚み分、すなわち厚みが100ｍ／ｍ
であれば球面板の開閉方向について200ｍ／ｍ程
度小型化が可能となる。第８図に側部及び後部を
切断した後の上部及び下部球面板８Ａ，８Ｂの形
状を示す。 The spherical plates 8A and 8B according to the present invention are located at the sides of the spherical plates 8A and 8B protruding from the throat 15 indicated by diagonal lines 22 and 23 in FIG. The surface is cut vertically with a width of l 1 . By making such a shape, the width of the spherical plate becomes significantly narrower, and accordingly, if the diameter D of the spherical plate is about 1000 m/m, the casing 19 will also be at a 90° side with respect to the opening/closing direction of the spherical plate. 500-1000m/about the direction of
It is possible to downsize the device by about 100 m. Also, with respect to the opening/closing direction, by making the rear region of each spherical plate indicated by diagonal lines 24 and 25 in FIG . , the casing has a thickness equal to the thickness of the spherical plate, that is, the thickness is 100m/m
If so, it is possible to reduce the size of the spherical plate by about 200 m/m in the opening/closing direction. FIG. 8 shows the shapes of the upper and lower spherical plates 8A and 8B after cutting the side and rear parts.
しかしながら上記のように切断した弁体におい
て、所定の流量を流すべく、流量調節弁を開状態
にしたとき上部球面板の厚みがあるが故に上部球
面板８Ａの厚み分だけ下部球面板８Ｂとホツパー
出口のスロート１５との間に隙間が生じその隙間
から装入原料がにじみ出るようにこぼれ落ち、流
量調節弁の本来の目的であるところの所定流量の
原料をホツパー中心、ひいては炉中心に原料を排
出するという機能を阻害する事になる。 However, in the valve body cut as described above, when the flow control valve is opened to allow a predetermined flow rate to flow, since the upper spherical plate is thick, the lower spherical plate 8B and the hopper are connected by the thickness of the upper spherical plate 8A. A gap is created between the outlet and the throat 15, and the charged raw material oozes out from the gap, and the original purpose of the flow rate control valve is to discharge the raw material at a predetermined flow rate to the center of the hopper and, ultimately, to the center of the furnace. This will impede that function.
本発明はこの問題点についても実用上解決する
構造を提供するものである。 The present invention provides a structure that practically solves this problem.
第９図は具体的な１つの例として、アーム２１
にこぼれ防止板２６，２７を取りつけた流量調節
弁の側面図を示したものである。アーム２１に取
り付けられたこぼれ防止板２６，２７は上部球面
板８Ａ、下部球面板８Ｂ、又はホツパーのスロー
ト１５に取りつけてもよいが、その高さは下部球
面板とホツパーのスロート部の隙間よりも30〜50
ｍ／ｍ高い方が効果的である。 FIG. 9 shows an arm 21 as a specific example.
2 is a side view of a flow control valve with spill prevention plates 26 and 27 attached thereto. The spill prevention plates 26 and 27 attached to the arm 21 may be attached to the upper spherical plate 8A, the lower spherical plate 8B, or the throat 15 of the hopper, but their height should be higher than the gap between the lower spherical plate and the throat of the hopper. Also 30-50
The higher m/m is, the more effective it is.
本発明に係る上部球面板８Ａ及び下部球面板８
Ｂの曲率半径Ｒは、スロート１５の下端部の半径
ｒとの関係で適当な値を決定するものであるが、
Ｒ／ｒが1.4〜2.5の範囲内とするのが望ましい。
Ｒ／ｒ＝1.4は球面板の厚みを考慮しない場合の
最小曲率半径であり、実際には各球面板の厚みは
無視できる大きさではないので重なり合う部分を
考慮すると1.4以上の値としなければならない。
上限値についてはＲ／ｒが2.5を超えるとケーシ
ングが大きくなり過ぎて実用に適さなくなるため
実用的な設備としては2.5以下とするのが望まし
い。又、本発明に係る球面板８Ａ，８Ｂは、弁を
閉止した状態で球面板後方がケーシングからはみ
出す部分を全て切断した形状とするのは有効であ
る。 Upper spherical plate 8A and lower spherical plate 8 according to the present invention
The radius of curvature R of B is determined to be an appropriate value in relation to the radius r of the lower end of the throat 15.
It is desirable that R/r be within the range of 1.4 to 2.5.
R/r = 1.4 is the minimum radius of curvature without considering the thickness of the spherical plate, and in reality the thickness of each spherical plate is not negligible, so it must be a value of 1.4 or more when considering the overlapping part. .
Regarding the upper limit value, if R/r exceeds 2.5, the casing becomes too large and becomes unsuitable for practical use, so it is desirable to set it to 2.5 or less for practical equipment. Further, it is effective that the spherical plates 8A and 8B according to the present invention have a shape in which the rear part of the spherical plate protrudes from the casing with the valve closed.
発明の効果
以上述べたとおり、本発明によれば各球面板を
コンパクトにすることが可能となつて設備費を大
幅に低減することができ、更に高炉装入原料は装
入中に球面板の側面からこぼれる事がなく、全量
同一芯の開口から排出が可能となりその機能を十
分に発揮させる事ができる。なお、本発明はベル
レス式炉頂装入装置のホツパー底部に設置するも
のとして説明したが、第１図に例示したベルレス
式炉頂装入装置の垂直シユートに設置して垂直シ
ユートにホツパーの機能をもたせて使用する場合
には非常に有効である。Effects of the Invention As described above, according to the present invention, each spherical plate can be made compact and equipment costs can be significantly reduced. There is no spillage from the sides, and the entire amount can be discharged from the same core opening, making it possible to fully demonstrate its function. Although the present invention has been described as being installed at the bottom of the hopper of a bell-less furnace top charging device, it is possible to install the hopper in the vertical chute of the bell-less furnace top charging device illustrated in FIG. It is very effective when used with
第１図及び第２図は高炉炉頂装入装置を例示す
る断面図、第３図は本発明に係る高炉炉頂装入装
置を例示する断面図、第４図及び第５図は本発明
に係る流量調節弁を例示する断面図及び平面図、
第６図は本発明に係るスロート下端部を例示する
断面図、第７図及び第８図は本発明に係る球面板
を例示する平面図、第９図は本発明の実施例を示
す側面図である。
２Ｂ……ホツパー、５Ａ……シール弁、７……
流量調節弁、８Ａ，８Ｂ……球面板、１５……ス
ロート、１６……開口部、１９……ケーシング、
２１，２２……アーム、２６，２７……こぼれ防
止板、３０……切欠部。
1 and 2 are sectional views illustrating a blast furnace top charging device, FIG. 3 is a sectional view illustrating a blast furnace top charging device according to the present invention, and FIGS. 4 and 5 are sectional views illustrating a blast furnace top charging device according to the present invention. A cross-sectional view and a plan view illustrating a flow rate control valve according to
FIG. 6 is a sectional view illustrating the lower end of the throat according to the present invention, FIGS. 7 and 8 are plan views illustrating the spherical plate according to the present invention, and FIG. 9 is a side view illustrating an embodiment of the present invention. It is. 2B...Hopper, 5A...Seal valve, 7...
Flow rate control valve, 8A, 8B... Spherical plate, 15... Throat, 16... Opening, 19... Casing,
21, 22... Arm, 26, 27... Spill prevention plate, 30... Notch.
Claims (1)
つそれぞれの球面板には近似三角形状又は近似半
円形状の切欠部があり、この２枚の球面板を同一
の軸を介して相反する方向に回動させることによ
りホツパーの軸芯を中心として開口部の面積が変
更できるようにした流量調節弁をホツパー底部の
スロート下端部に設けると共にスロート下方両側
部の段状切欠部をこぼれ防止板で覆うように構成
したことを特徴とする流量調節弁開閉部の構造。 ２ 前記流量調節弁を構成する２枚の球面板は、
弁体の曲率半径Ｒとスロート出口半径ｒとの比
Ｒ／ｒが1.4以上で2.5以下とした厚さ40〜100mm
の金属板で構成し、スロート下端外径より大きい
外径を有し、球面板の回動方向と平行な両側面の
スロートからはみ出した部分を切断した形状を呈
している特許請求の範囲第１項記載の構造。 ３ 球面板は、両球面板を閉方向に回動して弁を
閉じた時に各弁の後方のスロートからはみ出した
部分を切断した形状を呈している特許請求の範囲
第２項記載の構造。 ４ 球面板は、その後部上面の水平な面を切断し
た形状を呈している特許請求の範囲第２項記載の
構造。 ５ 前記こぼれ防止板は、スロートの下部、上部
球面板、下部球面板、上部球面板のアーム及び下
部球面板のアームのうちいずれかに設けるもので
ある特許請求の範囲第１項記載の構造。[Claims] 1. The valve body is composed of two overlapping spherical plates, and each spherical plate has an approximately triangular or approximately semicircular notch. A flow control valve is provided at the lower end of the throat at the bottom of the hopper, and the area of the opening can be changed around the axis of the hopper by rotating it in opposite directions through the shaft of the hopper. A structure of a flow control valve opening/closing part, characterized in that a shaped notch is covered with a spill prevention plate. 2 The two spherical plates constituting the flow rate control valve are:
Thickness: 40 to 100 mm, with the ratio R/r of the radius of curvature R of the valve body and the throat outlet radius r being 1.4 or more and 2.5 or less
Claim 1: The metal plate has an outer diameter larger than the outer diameter of the lower end of the throat, and has a shape obtained by cutting off the portions of both sides parallel to the rotating direction of the spherical plate that protrude from the throat. Structure described in section. 3. The structure according to claim 2, wherein the spherical plate has a shape obtained by cutting off the portion that protrudes from the throat at the rear of each valve when both spherical plates are rotated in the closing direction to close the valve. 4. The structure according to claim 2, wherein the spherical plate has a shape obtained by cutting the horizontal surface of the upper rear surface of the spherical plate. 5. The structure according to claim 1, wherein the spill prevention plate is provided at any one of the lower part of the throat, the upper spherical plate, the lower spherical plate, the arm of the upper spherical plate, and the arm of the lower spherical plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58184626A JPS6077910A (en) | 1983-10-03 | 1983-10-03 | Structure of opening and closing part of flow rate regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58184626A JPS6077910A (en) | 1983-10-03 | 1983-10-03 | Structure of opening and closing part of flow rate regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6077910A JPS6077910A (en) | 1985-05-02 |
| JPS6152206B2 true JPS6152206B2 (en) | 1986-11-12 |
Family
ID=16156523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58184626A Granted JPS6077910A (en) | 1983-10-03 | 1983-10-03 | Structure of opening and closing part of flow rate regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6077910A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPS070602A0 (en) | 2002-02-22 | 2002-03-21 | Tna Australia Pty Limited | Timing gates for a packaging machine |
| JP6573995B2 (en) * | 2016-01-27 | 2019-09-11 | 株式会社瑞光 | Powder body supply method, method for manufacturing powder body-containing article using the same, powder body supply apparatus, and apparatus for manufacturing powder body-containing article having the same |
-
1983
- 1983-10-03 JP JP58184626A patent/JPS6077910A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6077910A (en) | 1985-05-02 |
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