JP2005194909A - Gear pump - Google Patents

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JP2005194909A
JP2005194909A JP2004000313A JP2004000313A JP2005194909A JP 2005194909 A JP2005194909 A JP 2005194909A JP 2004000313 A JP2004000313 A JP 2004000313A JP 2004000313 A JP2004000313 A JP 2004000313A JP 2005194909 A JP2005194909 A JP 2005194909A
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drive shaft
driven shaft
casing
shaft
gear pump
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Takashi Ishiwatari
隆 石渡
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Bridgestone Corp
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Bridgestone Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a gear pump enabling the easy cleaning of the inside of a casing in a short time and having high sealability enough to prevent a supplied matter from flowing into a bearing section. <P>SOLUTION: This gear pump comprises a drive shaft 1 rotatably supported through a bearing and having one end connected to a drive source, a driven shaft 2 disposed parallel with the drive shaft 1 and rotatably supported through the bearing, a pair of gear-like rollers 3 and 4 mounted on the drive shaft 1 and the driven shaft 2 and rotated reverse to each other according to the drivingly rotating of the drive shaft 1 to suck and discharge the supplied matter, and a casing 5 storing the drive shaft 1 and the driven shaft 2 together with the gear-like rollers 3 and 4. The casing 5 is formed of split divided bodies 5a and 5b having mating surfaces 6a and 6b along the axes L of the drive shaft 1 and the driven shaft 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明はゴムやプラスチック等を送給物としてその定量吐出を可能とするギアポンプに関するものであり、該ポンプの軸受け部におけるシール性を高めるとともに、簡易な作業のもとでポンプ内部をクリーニングしようとするものである。   The present invention relates to a gear pump that enables a fixed amount discharge of rubber, plastic, or the like as a feed, and enhances the sealing performance at the bearing portion of the pump and attempts to clean the inside of the pump under a simple operation. To do.

従来、ギアポンプは、一端を駆動原に連結する駆動軸と、この駆動軸と平行配列になる従動軸と、各軸のそれぞれに配置され該駆動軸の回転に伴って互いに逆向きに回転して送給物の吸引、吐出を行う一対のギア状ローラと、これらの部材を収納するケーシングとからなっており、送給物の種類を変更する等、ケーシング内部をクリーニングする必要がある場合には、該ケーシングに設けられたサイドカバー（軸受け箱を兼ねたもの）を取り外したのち駆動軸及び従動軸をその軸心に沿ってローラとともに引き抜く作業が必要とされていた（例えば特許文献１参照）。
特開平５−１１６２００号公報 Conventionally, a gear pump has a drive shaft that is connected at one end to a drive source, a driven shaft that is arranged in parallel with the drive shaft, and is arranged on each of the shafts and rotates in opposite directions with the rotation of the drive shaft. When there is a need to clean the inside of the casing, such as changing the type of feed, which consists of a pair of gear rollers that suck and discharge the feed and a casing that houses these members Then, after removing the side cover (also serving as a bearing box) provided on the casing, it is necessary to pull out the drive shaft and the driven shaft together with the roller along the axis (see, for example, Patent Document 1). .
Japanese Patent Laid-Open No. 5-116200

ところで、従来のギアポンプは、ケーシングの内部、とくにギアが入り込む内部は開放面積が小さく、その内壁面にへばり着いている送給物を取り除くクリーニングはとくに送給物がゴムの場合には非常に困難で効率的な作業ができない不具合があった。   By the way, the conventional gear pump has a small open area inside the casing, especially the inside where the gear enters. There was a problem that difficult and efficient work was not possible.

また、この種のポンプは、ローラのサイドにＯリング等のシール部材を配置して軸封するのが一般的になっているが、該シール部材の摩耗度合いが大きくなるとその隙間を通して送給物が軸受け部に漏れ出てくるのが避けられないことから軸受けの性能に悪影響を及ぼすこともあって軸受けの頻繁な交換をせざるをえず長時間にわたって安定した操業が実現し難いところに問題を残していた。   In addition, this type of pump generally seals the shaft by placing a seal member such as an O-ring on the side of the roller, but when the degree of wear of the seal member increases, the feed material is fed through the gap. Leaking into the bearing is unavoidable, and it may adversely affect the performance of the bearing, so it is difficult to achieve stable operation over a long period of time due to frequent bearing replacement. Was leaving.

本発明の課題は、ポンプ内部のクリーニングがし易く、軸受け部分への送給物の侵入を防止できるシール性の高い新規なギアポンプを提案するところにある。   An object of the present invention is to propose a novel gear pump having a high sealing property that facilitates cleaning of the inside of the pump and prevents the feed from entering the bearing portion.

本発明は、軸受けを介して回転可能に支持され一端を駆動源に連結する駆動軸と、この駆動軸に平行に配置され同じく軸受けを介して回転可能に支持される従動軸と、駆動軸及び従動軸のそれぞれに設置され駆動軸の回転駆動に伴い互いに逆向きに回転して送給物の吸引と吐出を行う一対のギア状ローラと、前記駆動軸及び従動軸を各ギアとともに収納するケーシングとを備えたギアポンプであって、
前記ケーシングは、前記駆動軸、従動軸の軸心に沿う合わせ面を有する２つ割りの分割体よりなることを特徴とするギアポンプである。 The present invention includes a drive shaft that is rotatably supported through a bearing and has one end connected to a drive source, a driven shaft that is arranged in parallel to the drive shaft and is also rotatably supported through the bearing, a drive shaft, A pair of gear-like rollers that are installed on each driven shaft and rotate in opposite directions as the drive shaft rotates to suck and discharge the feed, and a casing that houses the drive shaft and the driven shaft together with each gear A gear pump with
The casing is a gear pump characterized in that the casing is formed of a split body having a split surface along the axis of the drive shaft and the driven shaft.

上記の構成になるギアポンプにおいてケーシングは、駆動軸及び従動軸の軸心に沿って取り付け、取り外し可能１でかつ該ケーシングと同等の合わせ面を有するな２つ割りの軸受け箱を備えるものが望ましい。   In the gear pump configured as described above, it is desirable that the casing is provided with a bearing box that is divided into two parts that are attached along the shaft centers of the drive shaft and the driven shaft, are detachable 1 and have a mating surface equivalent to the casing.

また、前記駆動軸及び従動軸は、それぞれ該駆動軸及び従動軸とともに回転可能でかつ軸受けへの送給物の侵入を防止するカラーを配置することができる。   Further, the drive shaft and the driven shaft can be arranged with a collar that can rotate together with the drive shaft and the driven shaft, respectively, and prevents the feed from entering the bearing.

さらに、前記ローラの両側にそれぞれには前記駆動軸及び従動軸の軸上にて摺動し軸受け箱への送給物の侵入を阻止するシール部材を設けるのが望ましい。   Further, it is desirable that a seal member is provided on each side of the roller to slide on the drive shaft and the driven shaft to prevent the feed from entering the bearing box.

ケーシングを２つ割りの分割体として、これを駆動軸、従動軸の軸心に沿う合わせ面で切り離すことで、ケーシング内部に配置した構成部材の取り外しが簡単であるばかりか、ケーシングの内側のクリーニングを簡便に行い得る。とくに、サイドカバーを開けて内部の構成部材を引き出す従来構造のギアポンプの場合ではクリーニングに要する時間は分解、組立時間を含めて２〜３時間程度要していたが、本発明に従う構造のものでは、０．５時間以下の短時間で済む。   The casing is divided into two parts, which are separated by a mating surface along the axis of the drive shaft and driven shaft, so that the components arranged inside the casing can be easily removed, and the inside of the casing can be cleaned. Can be easily performed. In particular, in the case of a gear pump having a conventional structure in which the side cover is opened and the internal components are drawn out, the time required for cleaning takes about 2 to 3 hours including the disassembly and assembly time. It can be done in a short time of 0.5 hours or less.

また、駆動軸、従動軸の軸受け近傍域に各軸とともに回転可能なカラーを配置することで送給物の軸受けへの侵入を阻止することが可能で、軸受けの長寿命化を図ることができる。   In addition, by disposing a collar that can rotate together with each shaft in the vicinity of the bearings of the drive shaft and the driven shaft, it is possible to prevent the feed from entering the bearings, thereby extending the life of the bearings. .

以下、図面を用いて本発明をより具体的に説明する。
図１は本発明に従うギアポンプの外観を分解状態で示した斜視図である。 Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a perspective view showing an appearance of a gear pump according to the present invention in an exploded state.

図における１は一端を継手（カップリング）を介して駆動源（図示せず）に連結する駆動軸である。この駆動軸１は回転可能に支持することができるようにその両端にそれぞれ軸受け１ａが取り付けられている。   Reference numeral 1 in the figure denotes a drive shaft having one end connected to a drive source (not shown) via a coupling (coupling). Bearings 1a are attached to both ends of the drive shaft 1 so that the drive shaft 1 can be rotatably supported.

また、２は駆動軸１に平行に配置される従動軸であって、この従動軸２も駆動軸１と同様にその両端に軸受け２ａが取り付けられている。   Reference numeral 2 denotes a driven shaft arranged in parallel to the drive shaft 1, and the driven shaft 2 is also provided with bearings 2 a at both ends like the drive shaft 1.

３は駆動軸１に一体的に設けられその外周面に複数の係合爪を有するギア状ローラ、４は従動軸２に一体的に設けられローラ３の係合爪にかみ合う複数の係合爪を有するたギア状ローラである。ローラ３及びローラ４は駆動軸１の回転駆動に伴い互いに逆向きに回転して送給物の吸引と吐出を行う。   Reference numeral 3 denotes a gear-like roller provided integrally with the drive shaft 1 and having a plurality of engaging claws on its outer peripheral surface. Reference numeral 4 denotes a plurality of engaging claws integrally provided on the driven shaft 2 and meshing with the engaging claws of the roller 3. A gear-like roller having The rollers 3 and 4 rotate in opposite directions with the rotation of the drive shaft 1 to suck and discharge the feed.

５は駆動軸１、従動軸２をローラ３、４とともに収納するケーシングである。このケーシング５はこの例では上側及び下側の２つ割りの分割体５ａ、５ｂからなるものとして示してあり、駆動軸１の軸心Ｌ（従動軸２の軸心Ｌ１と共通）に沿う合わせ面６ａ、６ｂを有し、分割体５ａには吸引口Ｓｃが、また、分割体５ｂには吐出口Ｄｉがそれぞれ設けられている。 A casing 5 accommodates the drive shaft 1 and the driven shaft 2 together with the rollers 3 and 4. Divided body 5a of the casing 5 are two upper and lower, in this example divided, is shown as comprising 5b, along the axis L of the drive shaft 1 (common with the axis L 1 of the driven shaft 2) There are mating surfaces 6a and 6b, the divided body 5a is provided with a suction port Sc, and the divided body 5b is provided with a discharge port Di.

また、７、８は駆動軸１、従動軸２の軸心に沿う向きに取り付け、取り外し可能でかつケーシング５と同等の合わせ面を有する２つ割りの軸受け箱、９は駆動軸１にキー等の回り止めを介して取り付けられ該駆動軸１とともに回転可能なカラー、１０は従動軸２にキー等の回り止めを介して取り付けられ該従動軸２とともに回転可能なカラーである。   Reference numerals 7 and 8 denote a two-piece bearing box which is attached in a direction along the axis of the drive shaft 1 and the driven shaft 2 and is removable and has a mating surface equivalent to the casing 5, and 9 is a key to the drive shaft 1 A collar 10 is attached to the driven shaft 1 and is rotatable with the drive shaft 1. A collar 10 is attached to the driven shaft 2 via a key and the like and is rotatable with the driven shaft 2.

カラー９、１０はともに軸受け１ａ、２ａとローラ３、４の間に配置されていて、軸を伝わって漏れ出てくる送給物を遮断して軸受けへの侵入を防止する。   The collars 9 and 10 are both disposed between the bearings 1a and 2a and the rollers 3 and 4 to block the feeding material leaking through the shafts and preventing the bearings from entering the bearings.

また、１１、１２はケーシング５（５ａ、５ｂ）の座面ｃと軸受け箱７、８の端面にてそれぞれ挟圧保持される２つ割りのシール部材（ゴム等）である。このシール部材１１、１２はローラ３、４の両側端に位置するもので、駆動軸１、従動軸２への接触下に摺動する凹部１１ａ、１２ａと圧力開放溝１１ｂ、１２ｂを有し、軸受け箱７、８への送給物の侵入を阻止する。   Reference numerals 11 and 12 denote two-divided seal members (rubber or the like) that are held under pressure by the seating surface c of the casing 5 (5a, 5b) and the end surfaces of the bearing boxes 7 and 8, respectively. The seal members 11 and 12 are located at both ends of the rollers 3 and 4 and have recesses 11a and 12a that slide under contact with the drive shaft 1 and the driven shaft 2 and pressure release grooves 11b and 12b. Prevents the feed from entering the bearing boxes 7 and 8.

さらに、１３、１４はケーシング５の両サイドにそれぞれボルトを介して装着されその内部を密閉状態に保持するカバー（軸受け１ａ、２ａ、の固定、軸受け箱７、８の固定を兼ねる。）である。   Furthermore, 13 and 14 are covers (both fixed to the bearings 1a and 2a and fixed to the bearing boxes 7 and 8) that are attached to both sides of the casing 5 via bolts and hold the inside thereof in a sealed state. .

上記の構成になるギアポンプは、駆動源によって駆動軸１を回転駆動させることでローラ７、８を回転させ、吸引口Ｓｃより送給物をケーシング５内に吸引するとともに所望の圧力でもって吐出口Ｄｉより定量吐出させる。   The gear pump configured as described above rotates the rollers 7 and 8 by rotating the drive shaft 1 by a drive source, and sucks the feed into the casing 5 from the suction port Sc and discharge port with a desired pressure. A fixed amount is discharged from Di.

送給物をゴムの如き粘性体として送給する送給工程においてその送給物の種類を変更する場合、ケーシングの内部に付着した粘性体を取り除くクリーニングを行ってからでないと種類の異なるものを送給することができないが、本発明に従うギアポンプは、ケーシング５を合わせ面６ａ、６ｂを境にして分割体５ａ、５ｂを切り離し分割体５ａについてはその内面を外側に向けることで、また、分割体５ｂについては駆動軸１及び従動軸２を引き上げることで各内壁面をクリーニングすることが可能であり効率的な作業が行える。   When changing the type of the feed in the feeding process of feeding the feed as a viscous material such as rubber, the type must be different after cleaning to remove the viscous material adhering to the inside of the casing. Although the gear pump according to the present invention cannot be fed, the casing 5 is separated from the mating surfaces 6a and 6b, and the divided bodies 5a and 5b are separated, and the inner surface of the divided body 5a is directed outward. With respect to the body 5b, each inner wall surface can be cleaned by pulling up the drive shaft 1 and the driven shaft 2, and efficient work can be performed.

また、上記の構成になるギアポンプにおいては、シール部材１１、１２に加えてカラー９、１０を設置した二段のシール方式となっているので、シール部材１１、１２の摩耗によってその隙間を経て送給物が漏れ出てくるようなことがあってもカラー９、１０によって確実に遮断することが可能で軸受け１ａ、２ａの長寿命化を図ることができる。   In addition, the gear pump configured as described above has a two-stage seal system in which the collars 9 and 10 are installed in addition to the seal members 11 and 12, so that the pump is fed through the gap due to wear of the seal members 11 and 12. Even if the supply material leaks out, it can be reliably blocked by the collars 9 and 10, and the life of the bearings 1a and 2a can be extended.

本発明の実施の形態では、駆動軸１と従動軸２を水平に平行配置した横置き構造として示したが、駆動軸１と従動軸２を上下に平行配置する縦置き構造、あるいは駆動軸１及び従動軸２を垂直に配置（軸心を垂直にする）する構造としてもよく、この点については限定されない。   In the embodiment of the present invention, the horizontal structure is shown in which the drive shaft 1 and the driven shaft 2 are horizontally arranged in parallel. However, the vertical structure in which the drive shaft 1 and the driven shaft 2 are arranged in parallel vertically or the drive shaft 1 is shown. The driven shaft 2 may be arranged vertically (the axis is made vertical), and this point is not limited.

また、軸受け箱７、８については、ケーシング５と別体になる２つ割りの分割構造として示したが、シール部材１１、１２の挟圧支持が可能ならば一体構造であってもかまわない。   Further, the bearing boxes 7 and 8 are shown as a split structure that is divided into two parts separately from the casing 5, but may be an integral structure as long as the seal members 11 and 12 can be supported by pressure.

分解、組立が簡単で内部におけるクリーニング作業の容易なギアポンプを提供できる。   It is possible to provide a gear pump that is easy to disassemble and assemble and easy to clean inside.

本発明にしたがうギアポンプの外観を分解状態で示した斜視図である。It is the perspective view which showed the external appearance of the gear pump according to this invention in the decomposition | disassembly state.

符号の説明Explanation of symbols

１ 駆動軸
１ａ 軸受け
２ 従動軸
２ａ 軸受け
３ ギア状ローラ
４ ギア状ロータ
５ ケーシング
５ａ 分割体
５ａ 分割体
６ａ 合わせ面
６ｂ 合わせ面
７ 軸受け箱
８ 軸受け箱
９ カラー
１０ カラー
１１ シール部材
１２ シール部材
１３ カバー
１４ カバー DESCRIPTION OF SYMBOLS 1 Drive shaft 1a Bearing 2 Drive shaft 2a Bearing 3 Gear roller 4 Gear rotor 5 Casing 5a Divided body 5a Divided body 6a Matching surface 6b Matching surface 7 Bearing box 8 Bearing box 9 Color 10 Color 11 Seal member 12 Seal member 13 Cover 14 Cover

Claims (4)

軸受けを介して回転可能に支持され一端を駆動源に連結する駆動軸と、この駆動軸に平行に配置され同じく軸受けを介して回転可能に支持される従動軸と、前記駆動軸及び従動軸のそれぞれに設置され該駆動軸の回転駆動に伴い互いに逆向きに回転して送給物の吸引と吐出を行う一対のギア状ローラと、前記駆動軸及び従動軸を各ローラとともに収納するケーシングとを備えたギアポンプであって、
前記ケーシングは、前記駆動軸、従動軸の軸心に沿う合わせ面を有する２つ割りの分割体よりなることを特徴とするギアポンプ。 A drive shaft rotatably supported via a bearing and having one end connected to a drive source; a driven shaft disposed parallel to the drive shaft and supported rotatably via the bearing; and the drive shaft and the driven shaft. A pair of gear-like rollers that are installed in each of them and rotate in opposite directions in accordance with the rotational drive of the drive shaft to suck and discharge the feed, and a casing that houses the drive shaft and the driven shaft together with the rollers. A gear pump with
2. The gear pump according to claim 1, wherein the casing is formed of a two-part divided body having a mating surface along the axis of the drive shaft and the driven shaft. 前記ケーシングは、前記駆動軸及び従動軸の軸心に沿う向きに取り付け、取り外し可能でかつ該ケーシングと同等の合わせ面を有するな２つ割りの軸受け箱を有する請求項１記載のギアポンプ。   2. The gear pump according to claim 1, wherein the casing has a two-piece bearing box that is attached in a direction along the axis of the drive shaft and the driven shaft, is removable, and has a mating surface equivalent to the casing. 前記駆動軸及び従動軸は、それぞれ該駆動軸及び従動軸とともに回転可能でかつ軸受けへの送給物の侵入を防止するカラーを有する請求項１又は２記載のギアポンプ。   The gear pump according to claim 1 or 2, wherein the drive shaft and the driven shaft have a collar that can rotate together with the drive shaft and the driven shaft, respectively, and prevents a feed from entering the bearing. 前記ローラの両側にそれぞれ駆動軸及び従動軸の軸上にて摺動し軸受け箱への送給物の侵入を阻止するシール部材を設けた請求項２又は３記載のギアポンプ。   The gear pump according to claim 2 or 3, wherein seal members are provided on both sides of the roller to slide on the shafts of the drive shaft and the driven shaft and prevent the feed material from entering the bearing box.
JP2004000313A 2004-01-05 2004-01-05 Gear pump Pending JP2005194909A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013504010A (en) * 2009-09-08 2013-02-04 フーゴ・フォーゲルザング・マシネンバウ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング Rotary piston pump
CN104976105A (en) * 2014-04-11 2015-10-14 东京理化器械株式会社 Diaphragm vacuum pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013504010A (en) * 2009-09-08 2013-02-04 フーゴ・フォーゲルザング・マシネンバウ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング Rotary piston pump
JP2015078700A (en) * 2009-09-08 2015-04-23 フーゴ・フォーゲルザング・マシネンバウ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツングＨｕｇｏ Ｖｏｇｅｌｓａｎｇ Ｍａｓｃｈｉｎｅｎｂａｕ Ｇｍｂｈ Rotary lobe pump
CN104976105A (en) * 2014-04-11 2015-10-14 东京理化器械株式会社 Diaphragm vacuum pump
JP2015203317A (en) * 2014-04-11 2015-11-16 東京理化器械株式会社 diaphragm vacuum pump
CN104976105B (en) * 2014-04-11 2019-07-16 东京理化器械株式会社 Vacuum diaphragm pump

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