JPH0698343B2 - Cleaning equipment - Google Patents

Cleaning equipment

Info

Publication number
JPH0698343B2
JPH0698343B2 JP1227936A JP22793689A JPH0698343B2 JP H0698343 B2 JPH0698343 B2 JP H0698343B2 JP 1227936 A JP1227936 A JP 1227936A JP 22793689 A JP22793689 A JP 22793689A JP H0698343 B2 JPH0698343 B2 JP H0698343B2
Authority
JP
Japan
Prior art keywords
nozzle
wall surface
tubular body
drive rotation
cleaning
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 - Lifetime
Application number
JP1227936A
Other languages
Japanese (ja)
Other versions
JPH0389987A (en
Inventor
京宣 新谷
宣明 海達
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP1227936A priority Critical patent/JPH0698343B2/en
Publication of JPH0389987A publication Critical patent/JPH0389987A/en
Publication of JPH0698343B2 publication Critical patent/JPH0698343B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Cleaning In General (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、筒状体の内部でその内壁面に向けて洗浄流体
を噴出するノズルを、前記筒状体の長手方向に沿った軸
心周りに回転自在に構成してある洗浄装置に関し、例え
ば、製紙プラントにおいて使用されるサクションローラ
の管壁部や、管壁部に形成してあるサクション孔等に向
けて、洗浄流体を噴出するノズルを設けてある洗浄装置
に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a nozzle for ejecting a cleaning fluid inside a tubular body toward the inner wall surface of the tubular body along the longitudinal axis of the tubular body. A cleaning device configured to be rotatable around, for example, a nozzle for ejecting a cleaning fluid toward a pipe wall portion of a suction roller used in a papermaking plant, a suction hole formed in the pipe wall portion, or the like. To a cleaning device provided with.

〔従来の技術〕[Conventional technology]

従来、この種の洗浄装置としては、駆動回転軸に複数の
一定長さのノズルを周方向に分散させて取り付けたもの
があり、前記駆動回転軸を前記筒状体内にその長手方向
に沿って配置し、その軸心周りに前記ノズルを回転させ
て、その先端から洗浄液を噴出することにより、前記筒
状体の内壁面等を洗浄するものがある。
Conventionally, as a cleaning device of this type, there is one in which a plurality of nozzles having a constant length are dispersedly attached to a drive rotation shaft in the circumferential direction, and the drive rotation shaft is provided in the cylindrical body along its longitudinal direction. There is one in which the inner wall surface and the like of the cylindrical body are cleaned by arranging the nozzles, rotating the nozzle around its axis, and ejecting a cleaning liquid from the tip thereof.

〔発明が解決しようとする課題〕[Problems to be Solved by the Invention]

上述した従来の洗浄装置では、前記筒状体の内壁面等に
対する洗浄効果を高めるために、前記ノズルと前記筒状
体の内壁面との距離を小にし、前記ノズルからの噴出流
の圧力が減衰することなく前記筒状体の内壁面等に作用
するように構成することが望まれる。
In the conventional cleaning device described above, in order to enhance the cleaning effect on the inner wall surface of the tubular body, the distance between the nozzle and the inner wall surface of the tubular body is reduced, and the pressure of the jet flow from the nozzle is reduced. It is desired to be configured so as to act on the inner wall surface of the tubular body without damping.

そこで、前記ノズルを前記内壁面に近接するように取り
付けた場合に、前記筒状体の軸心と前記駆動回転軸とが
ずれると、前記ノズルと前記筒状体の内壁面とが接触し
て双方に傷がつくという危険性があった。
Therefore, when the nozzle is attached so as to be close to the inner wall surface, if the axis of the cylindrical body and the drive rotation shaft are displaced, the nozzle and the inner wall surface of the cylindrical body come into contact with each other. There was a risk of scratching both sides.

また、同一の規格にある前記筒状体には、公差があり、
常に真円であるとも、その径が長手方向に一定であると
も限らず、そのような場合には、前記筒状体の軸心と前
記駆動回転軸とが一致していながらも、前記ノズルと前
記筒状体の内壁面とが接触して、双方に傷がつくという
危険性もあった。
In addition, there is a tolerance between the cylindrical bodies that have the same standard,
Even if it is always a perfect circle, its diameter is not necessarily constant in the longitudinal direction, and in such a case, even if the axial center of the tubular body and the drive rotation axis match, There was also a risk that the inner wall surface of the tubular body would come into contact with each other and scratch both sides.

特に、前記筒状体の一例である、製紙プラントにおける
サクションローラの洗浄では、その周壁部に形成された
複数のサクション孔に詰まったパルプかす等の汚物を、
前記ノズルからの噴出流の圧力により洗浄除去するので
あるが、前記サクションローラの内壁面に傷がつくと、
パルプに含まれた水分の吸引のためのシール部材と前記
サクションローラの内壁面との間にリークが発生し、パ
ルプに含まれた水分の吸引という所期の性能を発揮しえ
なくなるという虞があった。
In particular, which is an example of the tubular body, in the cleaning of the suction roller in a paper manufacturing plant, dirt such as pulp dregs clogged in a plurality of suction holes formed in the peripheral wall,
Although it is cleaned and removed by the pressure of the jet flow from the nozzle, if the inner wall surface of the suction roller is damaged,
A leak may occur between the seal member for sucking the water contained in the pulp and the inner wall surface of the suction roller, and the desired performance of sucking the water contained in the pulp may not be exhibited. there were.

本発明の目的は、上述した従来欠点を解消すると共に安
定的な洗浄を行って、その洗浄作業を、十分適切に且つ
効率良く行い得る手段を提供する点にある。
An object of the present invention is to eliminate the above-mentioned conventional drawbacks and to provide a means capable of performing stable washing and performing the washing operation sufficiently appropriately and efficiently.

〔課題を解決するための手段〕[Means for Solving the Problems]

本発明に係る洗浄装置の特徴構成は、 筒状体の内部でその内壁面に向けて洗浄流体を噴出する
ノズルを、前記筒状体の長手方向に沿った軸心周りに回
転自在に構成してある洗浄装置であって、 前記内壁面と前記ノズルとの接触を防止する保護機構を
設け、複数の前記ノズル夫々を、前記筒状体の長手方向
に沿った駆動回転軸に、放射状に配置すると共に、前記
駆動回転軸に取り付けた固定ノズルと、その固定ノズル
に対して駆動自在に内嵌した噴出部付きの可動ノズルと
から構成し、前記可動ノズルを前記内壁面へ向けて突出
付勢する付勢機構を設け、前記駆動回転軸の内部を通っ
て前記固定ノズル及び前記可動ノズルの内部を通る洗浄
流体の流路を設けてあることにあり、その作用・効果は
次の通りである。
A characteristic configuration of a cleaning device according to the present invention is that a nozzle for ejecting a cleaning fluid toward an inner wall surface of a tubular body is configured to be rotatable around an axial center along the longitudinal direction of the tubular body. A cleaning device provided with a protection mechanism for preventing contact between the inner wall surface and the nozzle, and the plurality of nozzles are radially arranged on a drive rotating shaft along the longitudinal direction of the tubular body. At the same time, the fixed nozzle is attached to the drive rotary shaft, and the movable nozzle with the ejection portion is fitted in the fixed nozzle so as to be freely drivable. The movable nozzle is urged to project toward the inner wall surface. Is provided, and a flow path of the cleaning fluid that passes through the inside of the drive rotary shaft and passes through the inside of the fixed nozzle and the inside of the movable nozzle is provided. The action and effect are as follows. .

〔作用〕[Action]

つまり、上記特徴構成を備えた洗浄装置を使用する場合
は、先ず、前記内壁面と前記ノズルとが直接接触するこ
とが、前記保護機構の存在によって回避される。そし
て、前記ノズルが前記固定ノズルと前記可動ノズルとか
ら構成され、前記可動ノズルを前記内壁面へ向けて突出
付勢する付勢機構が設けられているので、前記可動ノズ
ルが前記保護機構によって保護されながら前記付勢機構
によって前記内壁面に対して十分に近付けられて、前記
ノズルの噴出部からの噴出流の圧力が減衰することなく
前記内壁面に作用するようになる。
That is, in the case of using the cleaning device having the above-mentioned characteristic configuration, first, the direct contact between the inner wall surface and the nozzle is avoided by the existence of the protection mechanism. The nozzle is composed of the fixed nozzle and the movable nozzle, and a biasing mechanism for biasing the movable nozzle toward the inner wall surface is provided. Therefore, the movable nozzle is protected by the protection mechanism. While being kept close enough to the inner wall surface by the biasing mechanism, the pressure of the jet flow from the jet portion of the nozzle acts on the inner wall surface without being attenuated.

しかも、前記駆動回転軸を通った後の前記洗浄流体の流
路が、前記駆動回転軸に対して放射状に配置された前記
ノズルを構成する前記固定ノズル及び前記可動ノズルの
内部を通って、前記駆動回転軸の軸心と直交する方向へ
設けられると共に、前記可動ノズルを、前記直交する方
向と同じ方向の前記内壁面へ向かう方向に突出付勢する
付勢機構が設けられているので、前記ノズルの噴出部か
ら噴出されて前記内壁面へ向かう噴出流の反力が、前記
流路を通流する前記洗浄流体の圧力と前記付勢機構の付
勢力との両者によって受けられるようになる。従って、
前記洗浄の効果を向上させるべく前記噴出流の圧力を増
大させても、前記ノズルの安定支持が可能となり、前記
内壁面等の安定洗浄が実現されるようになる。
Moreover, the flow path of the cleaning fluid after passing through the drive rotation shaft passes through the fixed nozzle and the movable nozzle that constitute the nozzle radially arranged with respect to the drive rotation shaft, Since the urging mechanism is provided in the direction orthogonal to the axis of the drive rotation shaft, and urges the movable nozzle to project toward the inner wall surface in the same direction as the orthogonal direction, the urging mechanism is provided. The reaction force of the jet flow jetted from the jet portion of the nozzle toward the inner wall surface is received by both the pressure of the cleaning fluid flowing through the flow passage and the biasing force of the biasing mechanism. Therefore,
Even if the pressure of the jet flow is increased to improve the cleaning effect, the nozzle can be stably supported, and stable cleaning of the inner wall surface and the like can be realized.

〔発明の効果〕〔The invention's effect〕

従って、本発明に係る洗浄装置によれば、前記ノズル及
び前記内壁面の双方に傷をつけることなく前記ノズルを
前記内壁に対して十分に近接させて、前記ノズルからの
噴出流を、その圧力を減衰させない状態で安定的に前記
内壁に作用させることにより、前記洗浄の作業を、十分
適切に且つ効率良く行うことができるようになった。
Therefore, according to the cleaning device of the present invention, the nozzle is sufficiently close to the inner wall without damaging both the nozzle and the inner wall surface, and the jet flow from the nozzle By stably acting on the inner wall in a state where it is not attenuated, the cleaning work can be sufficiently and efficiently performed.

〔実施例〕〔Example〕

以下に本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below with reference to the drawings.

本発明による洗浄装置は、第2図および第3図に示すよ
うに、筒状体(10)の内部に挿入して、その内壁面(1
1)等に対する洗浄を行うものであり、機体(1)の先
端部にノズル機構(2)を、機体(1)の外周面に三つ
の走行部(4)を設けて構成してあり、処理機(1)の
後端部には、エアー供給パイプ(8)および洗浄液供給
パイプ(9)を接続してある。
As shown in FIGS. 2 and 3, the cleaning device according to the present invention is inserted into the inside of the tubular body (10) and the inner wall surface (1
1) etc. are cleaned, the nozzle mechanism (2) is provided at the tip of the machine body (1), and three running parts (4) are provided on the outer peripheral surface of the machine body (1). An air supply pipe (8) and a cleaning liquid supply pipe (9) are connected to the rear end of the machine (1).

前記ノズル機構(2)は、第1図及び第2図に示すよう
に、駆動回転軸(2a)に、その周方向に複数のノズル
(2b)を分散させて取り付けて構成してあり、各ノズル
(2b)は、前記筒状体(10)の径方向に伸縮するよう
に、前記駆動回転軸(2a)に取り付けた固定ノズル(2
b′)と、その固定ノズル(2b′)に対して摺動自在の
可動ノズル(2b″)とを、前記可動ノズル(2b″)を前
記駆動回転軸(2a)の径方向外方に付勢するスプリング
(3a)を介して連結してある。
As shown in FIG. 1 and FIG. 2, the nozzle mechanism (2) is configured by disposing a plurality of nozzles (2b) in a circumferential direction of the drive rotation shaft (2a) in a dispersed manner. The nozzle (2b) is attached to the drive rotation shaft (2a) so as to expand and contract in the radial direction of the tubular body (10).
b ′) and a movable nozzle (2b ″) slidable with respect to the fixed nozzle (2b ′), and the movable nozzle (2b ″) is attached to the outside in the radial direction of the drive rotation shaft (2a). It is connected via a biasing spring (3a).

即ち、前記固定ノズル(2b′)と前記可動ノズル(2
b″)とで移動機構を構成してあり、前記スプリング(3
a)が付勢機構を構成している。
That is, the fixed nozzle (2b ') and the movable nozzle (2b
b ″) constitutes a moving mechanism, and the spring (3
a) constitutes the biasing mechanism.

前記可動ノズル(2b″)には、支持具(3b)を介して、
一対のローラ(3c)を、その回転面が前記ノズル(2b)
の回転面に対して平行に、かつ、前記可動ノズル(2
b″)の先端部に対して突出する位置に取り付けてあ
り、もって前記ローラ(3c)が前記筒状体(10)の内壁
面(11)へ接当するに伴い、前記可動ノズル(2b″)を
前記スプリング(3a)の付勢に抗して前記駆動回転軸
(2a)の径方向の内方側に位置変更する。
To the movable nozzle (2b ″), through the support tool (3b),
A pair of rollers (3c), the rotation surface of which is the nozzle (2b)
Parallel to the plane of rotation of the movable nozzle (2
b ″) is attached to a position projecting with respect to the tip end of the movable nozzle (2b ″) as the roller (3c) contacts the inner wall surface (11) of the tubular body (10). ) Against the urging force of the spring (3a), and the position is changed to the inner side in the radial direction of the drive rotating shaft (2a).

すなわち、前記支持具(3b)と前記ローラ(3c)とで、
前記内壁面と前記ノズルとの近接距離の最小値を規制す
る離間距離規制機構を構成している。前記離間距離規制
機構は、また、前記内壁面(11)と前記ノズル(2b)と
の接触を防止する保護機構(3)でもある。
That is, with the support (3b) and the roller (3c),
A separation distance regulation mechanism that regulates the minimum value of the proximity distance between the inner wall surface and the nozzle is configured. The separation distance regulation mechanism also serves as a protection mechanism (3) for preventing contact between the inner wall surface (11) and the nozzle (2b).

つまり、前記ノズル(2b)の先端部と前記内壁面(11)
との距離は、前記可動ノズル(2b″)先端部からの前記
ローラ(3c)の突出距離、すなわち、最小近接距離に位
置規制される。
That is, the tip of the nozzle (2b) and the inner wall surface (11)
The distance between and is regulated to the protrusion distance of the roller (3c) from the tip of the movable nozzle (2b ″), that is, the minimum proximity distance.

前記走行部(4)は、それぞれ左右一対の走行用ベルト
を配したベルト式走行部(5)を、前後一対のアーム
(6)により前記機体(1)に連結して平行四連機構を
構成してある。
The traveling unit (4) is a parallel quadrupling mechanism in which a belt type traveling unit (5) in which a pair of left and right traveling belts are arranged is connected to the machine body (1) by a pair of front and rear arms (6). I am doing it.

即ち、前記走行部(4)を、エアーシリンダ(図示せ
ず)および駆動アーム(7)を介して外方へ突出移動さ
せ、前記筒状体(10)の内壁面(11)へ圧接することに
より、前記機体(1)を、前記筒状体(10)の軸心部、
又はその近傍に位置保持し、前記ベルト式走行部(5)
をエアーモータおよび伝動機構を介して駆動させ、もっ
て、前記機体(1)を前記筒状体(10)の内壁面(11)
に沿って自動走行させながら、前記ノズル機構(2)を
前記機体(1)の前後軸心周りで回転させて、洗浄液お
よび空気を混合した洗浄流体等を、前記筒状体(10)の
内壁部に向かって噴出させる。
That is, the traveling portion (4) is projected and moved outward through an air cylinder (not shown) and a drive arm (7), and is pressed against the inner wall surface (11) of the tubular body (10). The machine body (1) by the axial center portion of the tubular body (10),
Alternatively, the belt type traveling unit (5) is held at a position in the vicinity thereof.
Is driven via an air motor and a transmission mechanism, so that the machine body (1) is moved to the inner wall surface (11) of the tubular body (10).
The nozzle mechanism (2) is rotated around the front-rear axis of the machine body (1) while automatically traveling along the inner wall of the tubular body (10) by cleaning fluid such as cleaning fluid and air mixed therein. Eject toward the department.

以下に、上述した作業装置を用いるに好適な洗浄対象に
ついて述べる。
Hereinafter, a cleaning target suitable for using the working apparatus described above will be described.

製紙プラントにおけるサクションローラ(10′)は、第
4図に示すように、周壁部に複数のサクション孔(11
a)を形成してあり、上下両面をフェルト布(13)で挟
まれたパルプ(14)を圧接ローラ(15)とで挟持搬送し
つつ、前記パルプ(14)に含まれる水分を前記サクショ
ン孔(11a)を通して吸引するものである。
As shown in FIG. 4, the suction roller (10 ') in the papermaking plant has a plurality of suction holes (11
a) is formed, and the pulp (14) sandwiched between felt cloth (13) on both the upper and lower sides is sandwiched and conveyed by the pressure roller (15), while moisture contained in the pulp (14) is sucked into the suction holes. It is suctioned through (11a).

すなわち、前記サクションローラ(10′)の内壁部(1
1)であって、前記フェルト布(13)との接触部に対向
する箇所に、シール部材を介して、その長手方向に沿っ
て設けた樋(16)を通して水分を吸引するものであり、
前記作業装置は、前記フェルト布(13)を通して流入し
て、サクション孔(11a)に付着堆積するパルプかすを
洗浄除去するために用いることができる。
That is, the inner wall (1) of the suction roller (10 ')
1), which sucks water through a gutter (16) provided along the longitudinal direction of the felt cloth (13) at a location facing the contact portion with the felt cloth (13) via a seal member,
The working device can be used to wash and remove pulp dregs that has flowed in through the felt cloth (13) and adheres and accumulates in the suction holes (11a).

〔別実施例〕[Another embodiment]

以下に本発明の別実施例を説明する。 Another embodiment of the present invention will be described below.

1.先の実施例では、離間距離規制機構を構成するに、前
記筒状体(10)の内壁面(11)へのガイド部材としてロ
ーラ(3c)を用いているが、前記内壁面(11)に対して
転動する回転体としては、球であってもよく、さらに
は、前記内壁面(11)に対して摺動する橇状のものであ
ってもよい。
1. In the above embodiment, the roller (3c) is used as a guide member to the inner wall surface (11) of the tubular body (10) to configure the separation distance regulating mechanism. ) May be a sphere, and may be a sled-like body that slides on the inner wall surface (11).

尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。
It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

【図面の簡単な説明】[Brief description of drawings]

図面は本発明に係る洗浄装置の実施例を示し、第1図は
ノズルの正面図、第2図は洗浄装置の正面図、第3図は
洗浄装置の側面図、第4図はサクションローラの斜視図
である。 (2b)……ノズル、(4)……走行部、 (10)……筒状体、(11)……内壁面
The drawings show an embodiment of the cleaning device according to the present invention. Fig. 1 is a front view of a nozzle, Fig. 2 is a front view of the cleaning device, Fig. 3 is a side view of the cleaning device, and Fig. 4 is a suction roller. It is a perspective view. (2b) …… Nozzle, (4) …… Running part, (10) …… Cylinder, (11) …… Inner wall surface

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】筒状体(10)の内部でその内壁面(11)に
向けて洗浄流体を噴出するノズル(2b)を、前記筒状体
(10)の長手方向に沿った軸心周りに回転自在に構成し
てある洗浄装置であって、 前記内壁面(11)と前記ノズル(2b)との接触を防止す
る保護機構を設け、複数の前記ノズル(2b)夫々を、前
記筒状体(10)の長手方向に沿った駆動回転軸(2a)
に、放射状に配置すると共に、前記駆動回転軸(2a)に
取り付けた噴出部付きの固定ノズル(2b′)と、その固
定ノズル(2b′)に対して駆動自在に内嵌した可動ノズ
ル(2b″)とから構成し、前記可動ノズル(2b″)を前
記内壁面(11)へ向けて突出付勢する付勢機構を設け、
前記駆動回転軸(2a)の内部を通って前記固定ノズル
(2b′)及び前記可動ノズル(2b″)の内部を通る洗浄
流体の流路を設けてある洗浄装置。
1. A nozzle (2b) for ejecting a cleaning fluid toward an inner wall surface (11) of a tubular body (10) is provided around an axial center along the longitudinal direction of the tubular body (10). A cleaning device that is configured to be rotatable around the inner wall surface (11) and a nozzle (2b) are provided with a protection mechanism, and each of the plurality of nozzles (2b) has a cylindrical shape. Drive rotation axis (2a) along the longitudinal direction of the body (10)
, A fixed nozzle (2b ') with a jetting portion that is radially arranged and is attached to the drive rotation shaft (2a), and a movable nozzle (2b) that is drivably fitted into the fixed nozzle (2b'). ″), And a biasing mechanism for biasing the movable nozzle (2b ″) to project toward the inner wall surface (11) is provided.
A cleaning device provided with a flow path for a cleaning fluid that passes through the inside of the drive rotation shaft (2a) and the inside of the fixed nozzle (2b ') and the movable nozzle (2b ").
JP1227936A 1989-09-01 1989-09-01 Cleaning equipment Expired - Lifetime JPH0698343B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1227936A JPH0698343B2 (en) 1989-09-01 1989-09-01 Cleaning equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1227936A JPH0698343B2 (en) 1989-09-01 1989-09-01 Cleaning equipment

Publications (2)

Publication Number Publication Date
JPH0389987A JPH0389987A (en) 1991-04-15
JPH0698343B2 true JPH0698343B2 (en) 1994-12-07

Family

ID=16868605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1227936A Expired - Lifetime JPH0698343B2 (en) 1989-09-01 1989-09-01 Cleaning equipment

Country Status (1)

Country Link
JP (1) JPH0698343B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111894117A (en) * 2020-07-09 2020-11-06 葛巍 Energy-saving type sewage pipeline cleaning device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6206016B1 (en) * 1998-07-27 2001-03-27 Mac & Mac Hydrodemolition Inc. Spray cleaner for interior surface of pipeline
US7128074B2 (en) 1998-07-30 2006-10-31 Mac & Mac Hydrodemolition, Inc. Scarifier for the interior surface of a pipeline
US6550486B2 (en) 1998-07-30 2003-04-22 Mac & Mac Hydrodemolition, Inc. Apparatus for scarifying the interior surface of a pipeline
US6418947B1 (en) 1998-07-30 2002-07-16 Mac & Mac Hydrodemolition, Inc. Scarifier for interior surface of pipeline
JP2020023789A (en) * 2018-08-06 2020-02-13 ジャパンパイル株式会社 Cylindrical material inner surface cleaning device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119317Y2 (en) * 1972-03-13 1976-05-21
JPS5155009U (en) * 1974-10-16 1976-04-27
JPS62276A (en) * 1985-06-25 1987-01-06 Sankyo Co Ltd Production of pancreas elastase
JPS6314120A (en) * 1986-07-07 1988-01-21 Matsushita Electric Ind Co Ltd Liquid crystal color display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111894117A (en) * 2020-07-09 2020-11-06 葛巍 Energy-saving type sewage pipeline cleaning device
CN111894117B (en) * 2020-07-09 2021-12-07 新柒蓝环保科技(山东)有限公司 Energy-saving type sewage pipeline cleaning device

Also Published As

Publication number Publication date
JPH0389987A (en) 1991-04-15

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