JPS6140506B2 - - Google Patents
Info
- Publication number
- JPS6140506B2 JPS6140506B2 JP11137882A JP11137882A JPS6140506B2 JP S6140506 B2 JPS6140506 B2 JP S6140506B2 JP 11137882 A JP11137882 A JP 11137882A JP 11137882 A JP11137882 A JP 11137882A JP S6140506 B2 JPS6140506 B2 JP S6140506B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pressure water
- control valve
- water pump
- flow control
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
- B24C7/0015—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
- B24C7/0023—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier of feed pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
【発明の詳細な説明】
本発明は研掃材を高圧水により高速で金属帯板
に投射させ脱スケール、表面研削、表面仕上等の
表面処理を行なう湿式ブラスト装置における高圧
水の圧力制御方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling the pressure of high-pressure water in a wet blasting device that performs surface treatments such as descaling, surface grinding, and surface finishing by projecting abrasive material onto a metal band plate at high speed using high-pressure water. .
金属帯板を製造する工程において、熱間圧延時
に発生したスケールの除去、帯板表面の研削清
掃、等の表面処理を行なう湿式ブラスト装置で
は、均一な表面処理を行なえるようにするため
に、研掃材投射用の高圧水の噴射圧を帯板の材
質、幅、速度等に関係して制御している。 In the process of manufacturing metal strips, wet blasting equipment performs surface treatments such as removing scale generated during hot rolling and grinding and cleaning the strip surface. In order to achieve uniform surface treatment, The jetting pressure of high-pressure water for projecting the abrasive material is controlled in relation to the material, width, speed, etc. of the strip.
従来、高圧水の噴射圧の制御は、高圧水を送給
する配管の途中に高圧水ポンプと流量制御弁を設
け、高圧水ポンプを一定回転数に維持して流量制
御弁の開度を調節することにより行なつていたの
で、次のような欠点があつた。 Conventionally, the injection pressure of high-pressure water was controlled by installing a high-pressure water pump and a flow control valve in the middle of the piping that supplies high-pressure water, maintaining the high-pressure water pump at a constant rotation speed, and adjusting the opening of the flow control valve. However, this method had the following drawbacks:
() 流量制御弁に高圧水が流れるため弁の摩耗
が激しく、度々交換しなければならない他、弁
にハンチングが起き、騒音源となる。() High-pressure water flows through the flow control valve, which causes severe wear and tear, requiring frequent replacement, and hunting occurs in the valve, which becomes a source of noise.
() 弁は一般に良好な流量制御特性を得られる
範囲が狭いので、高圧水の圧力制御を全域に亘
り正確に行ない得ない。() Since the valve generally has a narrow range in which good flow control characteristics can be obtained, it is not possible to accurately control the pressure of high-pressure water over the entire range.
本発明は以上の問題を解決するためになしたも
ので、帯板に対する研掃材投射用の高圧水を低圧
側領域または高圧側圧力領域で噴射するに際し、
低圧側圧力領域では高圧水ポンプの回転数を低減
して流量制御弁を制御し、高圧側領域では流量制
御弁を開にして高圧水ポンプの回転数を制御する
ことを特徴としたものである。 The present invention was made to solve the above problems, and when injecting high-pressure water for projecting abrasive material onto a strip plate in a low-pressure side region or a high-pressure side pressure region,
In the low-pressure side pressure area, the rotation speed of the high-pressure water pump is reduced to control the flow control valve, and in the high-pressure side area, the flow control valve is opened to control the rotation speed of the high-pressure water pump. .
以下本発明の実施例を図面により説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の方法を実施するための装置を
示すもので、１は研掃材投射装置、２は流量制御
弁、３は高圧水ポンプ、４は該高圧水ポンプを駆
動する高圧モータ、５はブースターポンプ、６は
貯水槽を示し、高圧水ポンプ３により昇圧して得
た高圧水を流量制御弁２を経由せしめて投射装置
１に導くと共に該投射装置１に研掃材スラリー７
を供給し、高圧水の噴射により研掃材を帯板に向
け高速で投射できるようにしている。 FIG. 1 shows an apparatus for implementing the method of the present invention, in which 1 is an abrasive material projection device, 2 is a flow control valve, 3 is a high-pressure water pump, and 4 is a high-pressure motor that drives the high-pressure water pump. , 5 is a booster pump, and 6 is a water tank, in which high-pressure water obtained by increasing the pressure with a high-pressure water pump 3 is guided to the projection device 1 via the flow control valve 2, and the abrasive slurry 7 is introduced into the projection device 1.
is supplied, and the abrasive material can be projected at high speed toward the strip by jetting high-pressure water.
本発明ではこの高圧水の噴射圧の制御を高圧モ
ータの制御（高圧水ポンプの回転数調節）と流量
制御弁の制御の両者を併用して行う。 In the present invention, the injection pressure of this high-pressure water is controlled using both the control of the high-pressure motor (adjustment of the rotational speed of the high-pressure water pump) and the control of the flow rate control valve.
例えば第２図に示すように、流量制御弁を開に
して高圧モータを所定回転数の100％で駆動した
場合の高圧水噴射圧を100％Kgf/cm2、流量制御弁
を開にして高圧モータを50％で駆動した場合の高
圧水噴射圧を25Kgf/cm2、帯板の表面処理するため
に最低限度必要な高圧水噴射圧を１Kgf/cm2とする
に、１〜25Kgf/cm2の低圧側領域Ａでの高圧水噴射
圧の制御は、高圧モータ４の回転数を50％に低減
して斯かる状態で流量制御弁２の開度を調節する
ことにより行ない、25〜100Kgf/cm2の高圧側領域
Ｂでの高圧水噴射圧の制御は流量制御弁２を開に
した状態で高圧モータ４を制御して高圧水ポンプ
３の回転数を調節することにより行なう。 For example, as shown in Figure 2, when the flow control valve is opened and the high-pressure motor is driven at 100% of the specified rotation speed, the high-pressure water injection pressure is 100% Kgf/cm 2 , and when the flow control valve is opened and the high-pressure water injection pressure is If the high-pressure water injection pressure is 25Kgf/cm 2 when the motor is driven at 50%, and the minimum required high-pressure water injection pressure for surface treatment of the strip is 1Kgf/cm 2 , then 1 to 25Kgf/cm 2 . The high-pressure water injection pressure in the low-pressure side area A is controlled by reducing the rotation speed of the high-pressure motor 4 to 50% and adjusting the opening degree of the flow rate control valve 2 in this state. The high-pressure water injection pressure in the high-pressure region B of cm 2 is controlled by controlling the high-pressure motor 4 and adjusting the rotational speed of the high-pressure water pump 3 with the flow control valve 2 open.
前記したように流量制御弁３の開度調節は高圧
モータ４の回転数を制限して高圧水の圧力を低減
した状態で行ない、高圧側の領域Ｂでは流量制御
弁２を全開にして開度調節は行なわないので、弁
体等の摩耗が少なく、又ハンチングや騒音が流量
制御弁に発生することをなくせ、且つ流量制御弁
は良好な流量制御特性のもとで使用できるので高
圧水の噴射圧を正確に制御できる。 As mentioned above, the opening degree of the flow rate control valve 3 is adjusted by limiting the number of revolutions of the high-pressure motor 4 to reduce the pressure of high-pressure water, and in the high-pressure region B, the opening degree is adjusted by fully opening the flow rate control valve 2. Since no adjustment is required, there is less wear on the valve body, etc., and hunting and noise from occurring in the flow control valve can be eliminated, and the flow control valve can be used with good flow control characteristics, making it possible to inject high-pressure water. Pressure can be controlled accurately.
なお、本発明において高圧水噴射圧の高圧側と
低圧側領域の圧分の仕方は前記実施例に示したも
ののみに限定されることなく、要は高圧側と低圧
側の２つの領域に区分するものであればよく、そ
の他本発明の要旨を逸脱しない範囲において種々
変更して実施できることは勿論である。 In addition, in the present invention, the method of dividing the high-pressure side and low-pressure side regions of the high-pressure water injection pressure is not limited to that shown in the above embodiment, but can be divided into two regions, the high-pressure side and the low-pressure side. It goes without saying that the present invention can be implemented with various modifications without departing from the gist of the present invention.
本発明によれば前記したように、
(i) 流量制御弁の摩耗、ハンチング、騒音発生を
少なくできる。 According to the present invention, as described above, (i) wear, hunting, and noise generation of the flow control valve can be reduced;
(ii) 流量制御弁は良好な流量制御を行ない得る範
囲で使用されるので、高圧水の噴射圧を全域に
亘り正確に制御できる。(ii) Since the flow rate control valve is used within a range that allows good flow rate control, the injection pressure of high-pressure water can be accurately controlled over the entire range.
等の優れた効果を発揮する。Demonstrates excellent effects such as
第１図は本発明の実施に使用する装置の説明
図、第２図は本発明の方法を説明するための線図
である。
１…研掃材投射装置、２…流量制御弁、３…高
圧水ポンプ、４…高圧モータ、５…ブースターポ
ンプ、６…貯水槽、７…研掃材スラリー。
FIG. 1 is an explanatory diagram of an apparatus used to carry out the present invention, and FIG. 2 is a diagram for explaining the method of the present invention. 1... Abrasive material projection device, 2... Flow rate control valve, 3... High pressure water pump, 4... High pressure motor, 5... Booster pump, 6... Water tank, 7... Abrasive material slurry.
Claims (1)
領域または高圧側領域で噴射するに際し、低圧側
領域では高圧水ポンプの回転数を低減して流量制
御弁を制御し、高圧側領域では流量制御弁を開に
して高圧水ポンプの回転数を制御することを特徴
とする湿式ブラスト装置における圧力制御方法。1 When injecting high-pressure water for projecting abrasive material onto the strip plate in the low-pressure side area or high-pressure side area, the rotation speed of the high-pressure water pump is reduced in the low-pressure side area to control the flow rate control valve, and in the high-pressure side area, the high-pressure water pump is controlled. A pressure control method in a wet blasting device, characterized by controlling the rotation speed of a high-pressure water pump by opening a flow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11137882A JPS591167A (en) | 1982-06-28 | 1982-06-28 | Pressure control method in wet type blasting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11137882A JPS591167A (en) | 1982-06-28 | 1982-06-28 | Pressure control method in wet type blasting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS591167A JPS591167A (en) | 1984-01-06 |
| JPS6140506B2 true JPS6140506B2 (en) | 1986-09-09 |
Family
ID=14559663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11137882A Granted JPS591167A (en) | 1982-06-28 | 1982-06-28 | Pressure control method in wet type blasting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS591167A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103419140A (en) * | 2012-05-25 | 2013-12-04 | 宝山钢铁股份有限公司 | Supplied sand concentration control method for post-mixing high-pressure jet cleaning, and apparatus thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60150011U (en) * | 1984-03-14 | 1985-10-05 | 東海ゴム工業株式会社 | Rubber mold for hole molding |
| CN109500745A (en) * | 2018-11-30 | 2019-03-22 | 中车沈阳机车车辆有限公司 | A kind of vehicle wheel is to derusting system |
-
1982
- 1982-06-28 JP JP11137882A patent/JPS591167A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103419140A (en) * | 2012-05-25 | 2013-12-04 | 宝山钢铁股份有限公司 | Supplied sand concentration control method for post-mixing high-pressure jet cleaning, and apparatus thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS591167A (en) | 1984-01-06 |
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