JPS63183298A - Heat conduction interrupting mechanism in self-priming type pump - Google Patents
Heat conduction interrupting mechanism in self-priming type pumpInfo
- Publication number
- JPS63183298A JPS63183298A JP1381487A JP1381487A JPS63183298A JP S63183298 A JPS63183298 A JP S63183298A JP 1381487 A JP1381487 A JP 1381487A JP 1381487 A JP1381487 A JP 1381487A JP S63183298 A JPS63183298 A JP S63183298A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- self
- fixing ring
- shaft
- heat
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229920006015 heat resistant resin Polymers 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 21
- 238000007789 sealing Methods 0.000 description 9
- 239000002002 slurry Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 230000036772 blood pressure Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 210000001179 synovial fluid Anatomy 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は自吸式の揚水ポンプに関するものであるが、特
にポンプの空運転中に生ずる発熱を防止する熱伝導遮断
機構に関するものである。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a self-priming water pump, and more particularly to a heat conduction cutoff mechanism for preventing heat generation during idle operation of the pump.
従来の技術
従来から多用されている化学用の自吸式ポンプにおいて
は、軸シールは不可欠の構造でありしかも化学薬液を用
いる関係で腐蝕性がない材質であることが必要である。BACKGROUND OF THE INVENTION In chemical self-priming pumps that have been widely used in the past, shaft seals are an essential structure, and since chemical solutions are used, they must be made of a non-corrosive material.
したがって、空運転中に起こるポンプ事故は、この摺動
部のシールによって発生している。特に種々の成分を含
む薬液の結晶性を有する液を液封することは非常に困難
であるばかりか、耐熱性が低い樹脂素 材の弱点で
ある空回報時における発熱の影響により、この樹脂素材
が変形したり焦げついて液化されてしまう。そこで、従
来のシール部には金属素材からプラスチック素材に替え
てシールバネの圧力を強くすると共に、ロリング等の部
材を軸部の稼動部に４多用するものが一般的であった。Therefore, pump accidents that occur during dry operation are caused by the seals in the sliding parts. In particular, it is extremely difficult to liquid-seal crystalline medicinal liquids containing various ingredients, and the heat generated during idle notification, which is a weak point of resin materials with low heat resistance, makes it difficult to seal them. becomes deformed, burnt, and liquefied. Therefore, in the conventional seal part, the metal material is generally replaced with a plastic material, the pressure of the seal spring is strengthened, and members such as rolling rings are generally used in the moving part of the shaft part.
そのために、冷却水が不足したり無くなったりした場合
には、摺動部からの発熱現象が生ずることになる。それ
はポンプの最高圧力を液封するだけの反力バネが使用さ
れているので、一旦冷却水が無くなると１分足らずで高
温になり摺動部から発熱し、更に固定シール部に接続さ
れている部分からポンプ全体に熱伝導されるからである
。また、回転部には多くの稼動スライドする部材が装設
されており、接触摩耗することによって徐々に押圧バネ
により押され連続的にシールされるので、そのスライド
川に軸とケーシングとの間にＯリングでシールされるよ
うになっている。その結果、薬液や温度変化によって０
リングのゴムがｉ張したり変形したりして漏液の原因に
なり、また結晶やスラリー混入液は０リングに詰り稼動
部材が停止して液もれ現象が生じるなどして、回転シー
ルが不安定であった。更に、５にｇ／ｍ２の高圧用ポン
プにおいては、製品化が不可能とされていた。Therefore, if the cooling water becomes insufficient or disappears, heat generation will occur from the sliding parts. It uses a reaction spring that only seals the maximum pressure of the pump, so once the cooling water runs out, it becomes hot in less than a minute, generating heat from the sliding part, which is further connected to the fixed seal part. This is because heat is conducted from that part to the entire pump. In addition, the rotating part is equipped with many movable and sliding members, and as they contact and wear, they are gradually pressed by the pressure spring and are continuously sealed, so that the slider is placed between the shaft and the casing. It is sealed with an O-ring. As a result, due to chemical solutions or temperature changes,
The rubber of the ring may become stretched or deformed, causing liquid leakage, and crystals or liquid mixed with slurry may clog the O-ring, causing the moving parts to stop and causing liquid leakage, which may cause the rotary seal to become damaged. It was unstable. Furthermore, it was considered impossible to commercialize a high-pressure pump with a pressure of 5 g/m2.
発明が解決しようとする問題点
上記の如き従来のメカニカルシールの不安定を無くする
ために、そのソールの基本的な構造を全く新しいものに
変えようとしたところに、本発明が解決しようとする問
題点がある。すなわち、■シール部内に冷却水や自己液
が全く無くても燃焼事故が発生しないようにすること、
■微妙にスライドＳ動部材を押える０リングを不要にす
ると共に、微；Ｊ！４整をしなくても内圧液がかかると
シール面が加圧されようとすること、■通常の低い圧力
の時には弱いバネの圧力ても高熱にならないようにする
こと、などに本発明が解決しようとする問題点がある。Problems to be Solved by the Invention In order to eliminate the instability of the conventional mechanical seal as described above, the basic structure of the sole has been changed to a completely new one, and the present invention is to solve this problem. There is a problem. In other words, ■ prevent combustion accidents from occurring even if there is no cooling water or self-liquid within the seal;
■It eliminates the need for an O-ring that subtly presses the slide S moving member, and also allows for a slight;J! The present invention solves problems such as the fact that the sealing surface tends to be pressurized when internal pressure fluid is applied without adjusting the seal, and the problem of preventing high heat even with weak spring pressure when the pressure is normally low. There are problems with trying to do this.
問題点を解決するための手段
本発明は上記の如き問題点を解決するために開発したも
のであって、駆動モーターに連結した主軸の先端に回転
羽根を取付けたインペラー部を固着し、前記駆動モータ
ーを介して回転羽根を回転させて自吸揚水する自吸式ポ
ンプにおいて、前記主軸に耐熱樹脂材を成形して成る軸
固定環とシール固定埋置は撮とを内装し、更に前記軸固
定環とシール固定環受部との間に剥い圧力バネにて押圧
し、かつ主軸と一体に回転するシール回転環とを内装し
たことを特徴とする自吸式ポンプにおける熱伝導遮断機
構とし、更に前記シール固定環受部および軸スリーブ部
に、適宜形状に成形した断熱溝を設けると共に、前記シ
ール部に弾力性を有しかつジャバラ状に成形した被覆材
を外嵌したことによって、これらの問題点をすべて解決
することができる。すなわち、本発明の問題点を解決す
るための手段は、■固定シール部材を挟んでいるシール
ケース等ポンプの本体やその他の接触部材に耐熱性の樹
脂材を使用することによフて、熱伝導を防止するように
したこと、■更にシール部の部材にエアーギャップを設
け、発熱しても各部材個所において放熱するようにした
こと、■軸スリーブを自在フラムとによって固定される
回転環によることによって、結晶やスラリー等が稼動部
に混入されてもポンプの運転には何らの支障を与えない
ようにしたこと、■圧力バネを稼動部の外側に設けると
共に、翁い圧力で押えるだけで、接液されず腐蝕が防止
できるようにしたこと、■摺動部の摩耗時における慴動
を徐々にできるようにする回転環の慴動面を反対側に組
合せ突起部を設けて、軸固定環と噛み合わせ一体で回転
シールできるようにしたこと、などにある。Means for Solving the Problems The present invention was developed in order to solve the problems as described above.The present invention has been developed in order to solve the above-mentioned problems. In a self-priming pump that self-suctions water by rotating rotary vanes via a motor, a shaft fixing ring made of a heat-resistant resin material and a seal fixing burial are installed inside the main shaft, and the shaft fixing A heat conduction cutoff mechanism for a self-priming pump, characterized in that a seal rotating ring which is pressed by a peel pressure spring and rotates integrally with the main shaft is installed between the ring and the seal fixed ring receiving part, These problems can be solved by providing a heat insulating groove formed into an appropriate shape in the seal fixing ring receiving part and the shaft sleeve part, and by fitting a covering material having elasticity and shaped into a bellows shape onto the seal part. You can solve all the points. In other words, the means for solving the problems of the present invention are as follows: (1) Using heat-resistant resin materials for the main body of the pump, such as the seal case that sandwiches the fixed seal member, and other contact members; 1) An air gap was provided in the seal member to ensure that heat is dissipated from each part even if heat is generated; By doing so, even if crystals, slurry, etc. get mixed into the moving part, it will not cause any problems to the operation of the pump. ■A pressure spring is installed on the outside of the moving part, and it can be pressed simply by applying pressure. , It is possible to prevent corrosion by not coming into contact with liquid, and ∎ The sliding surface of the rotating ring is set on the opposite side to allow gradual sliding movement when the sliding part wears out, and a protrusion is provided on the opposite side to fix the shaft. It meshes with the ring so that it can be rotated and sealed as one unit.
作 用
本発明は、ポンプに内圧がかかるのを利用して、圧力が
上がれば上る程シール面の裏側よりかかるようにしてあ
り、押しバネ圧は停止時ときわめて弱いシール圧力で充
分であるので、空回転して高温の発熱が生しても低温に
押えることができる。また、稼動部材のスライドシール
部に０リングを使用しなくても自由に動き、固定面と回
転面とが密着してシール性が高くなるようにしである。Function The present invention utilizes the fact that internal pressure is applied to the pump, and the higher the pressure, the more it is applied from the back side of the sealing surface.The pressing spring pressure is sufficient when the pump is stopped and the extremely weak sealing pressure. Even if high-temperature heat is generated due to idle rotation, the temperature can be kept low. In addition, the slide seal portion of the movable member can move freely without using an O-ring, and the fixed surface and rotating surface are in close contact to improve sealing performance.
実施例
以下、図面に従７て本発明の一実施例について説明する
。EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図は、本発明の自吸式ポンプにおける熱伝導遮断機
構を示したものである。１はケーシング、２は主軸およ
び３はインペラー部であり、揚水羽根４と裏羽根５とが
取付けである。これらは、従来の自吸式ポンプの構造と
同じであり、モーター２０の駆動により主軸２を回転さ
せ、更にインペラー部３の回転羽根４．５を回転させて
、吸水口１８から吸水し吐水口９から放水すると共に自
吸揚水させるものである。このような自吸式ポンプにお
いて、シール部１２に軸固定環６．シール固固定環部７
およびシール回転環８を内装し、かつ軸スリーブ部９と
シール固定環受部７に伝導熱を遮断する断熱溝１１を成
形し、更にこれらのシール部材にゴム製のジャバラ形状
に成形した被覆材１３を外嵌させたところに、本発明の
構成要部がある。軸固定環６とシール固定環受部７は、
耐熱樹脂材を素材に成形されており、軸スリーブ部９を
介して主軸２に固定されている。シール回転環８は、バ
ネＩＯを介して主軸２と一体に回転シールされるように
回転固定環６とシール固定環受部７間に嵌装されている
。バネ１０は、シールできる面圧で押える程度の剥いス
プリング圧力でよい。Ｕは本発明の要部の一つである断
熱溝であり、空運転の際に発生した高熱の伝導熱を遮断
するカット溝である。この断熱溝１１は、シール固定環
受部７および軸スリーブ部９に形成されている。特に、
軸スリーブ９には主軸２に沿って縦□長断熱溝１１が設
けであるので、断熱効果が高くなる。なお、１４は渦室
、１５はシール受、！６は上蓋、１７は下蓋である。FIG. 1 shows a heat conduction cutoff mechanism in a self-priming pump of the present invention. 1 is a casing, 2 is a main shaft, 3 is an impeller part, and a pumping blade 4 and a back blade 5 are attached. These pumps have the same structure as conventional self-priming pumps, in which the main shaft 2 is rotated by driving the motor 20, and the rotating blades 4.5 of the impeller section 3 are rotated to suck water from the water inlet 18 and the water outlet. Water is discharged from 9, and the water is pumped up by itself. In such a self-priming pump, a shaft fixing ring 6. Seal fixed ring part 7
and a seal rotating ring 8 is installed inside, a heat insulating groove 11 is formed in the shaft sleeve part 9 and the seal fixed ring receiving part 7 to block conduction heat, and a covering material is formed in the shape of a bellows made of rubber for these seal members. The main components of the present invention are located where 13 is fitted onto the outside. The shaft fixed ring 6 and the seal fixed ring receiving part 7 are
It is molded from a heat-resistant resin material and is fixed to the main shaft 2 via a shaft sleeve portion 9. The seal rotating ring 8 is fitted between the rotating stationary ring 6 and the seal stationary ring receiving portion 7 so as to rotate and seal integrally with the main shaft 2 via a spring IO. The spring 10 may have a peeling spring pressure that can be pressed down with a surface pressure that allows a seal. U is a heat insulating groove, which is one of the main parts of the present invention, and is a cut groove that blocks high-temperature conduction heat generated during idle operation. This heat insulating groove 11 is formed in the seal fixing ring receiving part 7 and the shaft sleeve part 9. especially,
Since the shaft sleeve 9 is provided with the longitudinal insulation groove 11 along the main shaft 2, the insulation effect is enhanced. In addition, 14 is a vortex chamber, 15 is a seal receiver,! 6 is an upper lid, and 17 is a lower lid.
第２図は、第１図で示したシール回転環受部７と、シー
ル回転環８の嵌装を示したものである。本図からも明ら
かのように、シール固定環受部７の上側と、シール回転
環８の下側に凹凸状の嵌合片を成型加工した嵌装部２１
．２１を嵌合して連結されている。この状態でシール固
定環受部７がバネｌＯを介して弾設されているので、こ
のバネ１０を介してシール固定Ｉに１８がシール固定現
受部７から脱着される。つまり、シール固定環受部７を
被覆している被覆材１３と一緒にシール固定環８が上下
移動されることになる。FIG. 2 shows how the seal rotating ring receiving portion 7 shown in FIG. 1 and the seal rotating ring 8 are fitted. As is clear from this figure, the fitting part 21 is formed by molding uneven fitting pieces on the upper side of the seal fixed ring receiving part 7 and the lower side of the seal rotating ring 8.
．． 21 are fitted and connected. In this state, the seal fixing ring receiving part 7 is resiliently installed via the spring 10, so that the seal fixing ring 18 is attached to and detached from the seal fixing ring receiving part 7 via the spring 10. In other words, the seal fixing ring 8 is moved up and down together with the covering material 13 covering the seal fixing ring receiving part 7.
第３図は本発明の実施状態を示したものであり、（イ）
は正常な運転中（ロ）は自吸中シール部か負荷状態にな
った場合を、それぞれ表わしたものである。まず、ポン
プが正常に運転されると、第３図（イ）に示すように吸
引液Ａは吐出液Ｂとしてポンプ外に放出される。その際
、吸引液Ａの一部かポンプ内の方向に流出されシール部
＋２にα液Ｃが注入されるようになっている。つまり、
正常運転中でもシール部１２が回転すると発熱するので
、このシール部１２に潤滑用として僅かな濡液Ｃを濡れ
込ませることによって発熱を防ぐことができる。なお、
通常に運転されている時は、裏羽根の作用によってシー
ル負荷がかからないので、弱いバネでも摺動圧は充分と
なる。次に、自吸中シール部１２が負荷状態になると、
第３図（ロ）に示すように吸引ＭＡは吐出液Ｂとしてポ
ンプ外に放出されるが、シール部１２ともシール液りと
して吸引される。そして、■押込み圧力が高い場合は、
裏羽根が負圧になりシール部１２に内圧力がかかるとシ
ール回転の背面より一層加圧されるので、シール効果が
増すことになる、■またシール部１２に内圧がかかると
接触面より裏側面の方が大きいので、内圧力が高くなる
程シール効果が高くなる、■更にシール部が回転させる
と内側から外周部に向けて遠心力が作用し、シール液り
が外側に流れようとするので、外部からの液圧がかかり
液漏れを防ぐことができる。などの効果が得られる。な
お、本図の実施状態で空運転の場合を図示しないが、ポ
ンプ内に吸引液Ａが吸引されていない場合と、シール部
１２に濡液Ｃが無く流入されていない場合とが空運転す
る場合である。この空運転により、シール部１２内に高
熱が発生してポンプ事故となる。FIG. 3 shows the implementation state of the present invention, (a)
(b) shows normal operation (b) and the case where the seal section is under load during self-priming, respectively. First, when the pump is operated normally, the suction liquid A is discharged outside the pump as the discharge liquid B, as shown in FIG. 3(A). At this time, part of the suction liquid A flows out into the pump, and the α liquid C is injected into the seal portion +2. In other words,
Since heat is generated when the seal portion 12 rotates even during normal operation, heat generation can be prevented by wetting the seal portion 12 with a small amount of wetting liquid C for lubrication. In addition,
During normal operation, no sealing load is applied due to the action of the back blade, so even a weak spring can provide sufficient sliding pressure. Next, when the self-priming seal part 12 is in a loaded state,
As shown in FIG. 3(b), the suction MA is discharged outside the pump as a discharge liquid B, but is also sucked into the seal portion 12 as a seal liquid. ■If the indentation pressure is high,
When the back blade becomes negative pressure and internal pressure is applied to the seal part 12, more pressure is applied from the back side of the seal rotation, increasing the sealing effect. Since the surface is larger, the higher the internal pressure, the higher the sealing effect. ■When the seal part rotates, centrifugal force acts from the inside toward the outer periphery, causing the seal liquid to flow outward. Therefore, external liquid pressure is applied to prevent liquid leakage. Effects such as this can be obtained. Note that although the case of dry operation is not shown in the implementation state of this figure, dry operation occurs when the suction liquid A is not sucked into the pump and when there is no wet liquid C flowing into the seal portion 12. This is the case. This idle operation generates high heat within the seal portion 12, resulting in a pump accident.
第４図は、従来の自吸式ポンプの一実施例を示したもの
である。本図からも明らかのように、０リング部ａとバ
ネ部すとから成っており、■軸部に０リングａ゛で回転
環を押えているために、スラリーが詰ったりすると微動
調整の作動が不可能となりシール面の圧力が不均一にな
る、■またバネ部すにも薬液やスラリーが付着して腐蝕
と変動が起きる、■更に空運転すると直ちに摺動面の接
触部のバネやケース軸が熱くなり変形されて液漏れ現象
の原因にもなる、などの欠陥が生じている。なお、本実
施例以外にも■ポンプのメカニカルシール内部に薬液や
スラリー混入液が流入されると、バネやＶリツフンール
に結晶が詰って、微動調整が不可能となりｆｉ漏れ現象
が生ずることになる。FIG. 4 shows an embodiment of a conventional self-priming pump. As is clear from this figure, it consists of an O-ring part a and a spring part, and since the rotating ring is held down by the O-ring a' on the shaft, fine adjustment will be activated if slurry becomes clogged. ■Also, chemicals and slurry adhere to the spring parts, causing corrosion and fluctuations. ■Furthermore, dry operation immediately damages the springs and cases on the contact parts of the sliding surfaces. Defects have occurred, such as the shaft becoming hot and deformed, causing liquid leakage. In addition to this example, ■If a chemical solution or a slurry-containing liquid flows into the mechanical seal of the pump, the spring or V-Ritsumeru will become clogged with crystals, making fine adjustment impossible and causing a fi leakage phenomenon. .
発明の効果
本発明は以上のように構成されているので、次のような
効果を有している。Effects of the Invention Since the present invention is configured as described above, it has the following effects.
ア、ポンプの内圧がかかると血圧が裏面から一層強固に
押されてシール効果が高まる。A. When the internal pressure of the pump is applied, the blood pressure is pushed even more firmly from the back side, increasing the sealing effect.
イ、前記のように圧力がかかる程シール性が良好になる
ので、弱いバネ圧力でも充分に使用することができる。B. As mentioned above, the higher the pressure, the better the sealing performance, so even weak spring pressure can be used satisfactorily.
つ、軸シール部の外径にジャバラ製のゴムで被覆されて
いるので、薬液やスラリーがバネ部や噛み合わせ部分か
ら液が流入せず、微妙な動きでもって非常にＡ整しやす
くなる。First, since the outer diameter of the shaft seal part is covered with bellows rubber, the chemical solution or slurry will not flow in from the spring part or the engagement part, making it very easy to adjust the A position with delicate movements.
工、接触シール部には外部から液はかかるか遠心力によ
って外側に移動されるので、接触溜滑液が漏れにくくな
る。In this case, liquid is applied to the contact seal part from the outside or moved outward by centrifugal force, making it difficult for the contact synovial fluid to leak.
以上のような多くの具体的な効果を有する本発明は、性
能面は勿論のこと操作面、取扱面、実用面等あらゆる面
から見ても従来よりも優れている自吸式ポンプを提供す
ることができる。The present invention, which has many specific effects as described above, provides a self-priming pump that is superior to conventional pumps not only in terms of performance but also in all aspects such as operation, handling, and practicality. be able to.
第１図は本発明の熱伝導遮断機構から成る自吸式ポンプ
を示した要部の一部拡大断面図、第２図は第１図に示し
た要部の斜視図、第３図は本発明の使用状態を示した説
明概要図、第４図は従来の自吸式ポンプを示した一部拡
大断面図である。
１−・−ケーシング ２・−一主軸３・・・・・・
インペラー部 ６・−・−軸固定環７ ・−−−−シ
ール固定環受部
８−−−−−シール回転環 ９・−・−軸スリーブ部
Ｉ Ｑ −−−−−−バネ １１−・−断熱
溝１２・・・・・・シール部 １３＝−被覆材２
１−−−−−−嵌装部FIG. 1 is a partially enlarged sectional view of the main parts of a self-priming pump comprising the heat conduction cutoff mechanism of the present invention, FIG. 2 is a perspective view of the main parts shown in FIG. 1, and FIG. FIG. 4 is a partially enlarged sectional view showing a conventional self-priming pump. 1 - Casing 2 - Main shaft 3...
Impeller section 6 - - - Shaft fixed ring 7 - - Seal fixed ring receiving part 8 - Seal rotating ring 9 - - Shaft sleeve part I Q - - - Spring 11 - - -Insulating groove 12...Seal part 13=-Coating material 2
1-------Fitting part
Claims (1)
付けたインペラー部を固着し、前記駆動モーターを介し
て回転羽根を回転させて自吸揚水する自吸式ポンプにお
いて、前記主軸に耐熱樹脂材を成形して成る軸固定環と
シール固定環受け振とを内装し、更に前記軸固定環とシ
ール固定環受部との間に弱い圧力バネにて押圧し、かつ
主軸と一体に回転するシール回転環とを内装したことを
特徴とする自吸式ポンプにおける熱伝導遮断機構。 ２、前記シール固定環受部および軸スリーブ部に、適宜
形状に成形した断熱溝を設けた特許請求の範囲第１項記
載の自吸式ポンプにおける熱伝導遮断機構。 ３、前記シール部に弾力性を有しかつジャバラ状に成形
した被覆材を外嵌した特許請求の範囲第１項および第２
項記載の自吸式ポンプにおける熱伝送遮断機構。[Scope of Claims] 1. A self-priming pump in which an impeller portion having a rotary vane attached to the tip of a main shaft connected to a drive motor is fixed, and the rotary vane is rotated via the drive motor to self-suction and pump water, A shaft fixing ring made of a heat-resistant resin material and a seal fixing ring bearing are installed inside the main shaft, and a weak pressure spring is used to press between the shaft fixing ring and the seal fixing ring receiving part, and the main shaft A heat conduction cutoff mechanism in a self-priming pump characterized by having a seal rotation ring that rotates integrally with the self-priming pump. 2. The heat conduction cutoff mechanism in a self-priming pump according to claim 1, wherein the seal fixing ring receiving portion and the shaft sleeve portion are provided with a heat insulating groove formed into an appropriate shape. 3. Claims 1 and 2, wherein a covering material having elasticity and formed into a bellows shape is fitted onto the seal portion.
Thermal transmission cutoff mechanism in the self-priming pump described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1381487A JPS63183298A (en) | 1987-01-23 | 1987-01-23 | Heat conduction interrupting mechanism in self-priming type pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1381487A JPS63183298A (en) | 1987-01-23 | 1987-01-23 | Heat conduction interrupting mechanism in self-priming type pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63183298A true JPS63183298A (en) | 1988-07-28 |
Family
ID=11843743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1381487A Pending JPS63183298A (en) | 1987-01-23 | 1987-01-23 | Heat conduction interrupting mechanism in self-priming type pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63183298A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021088939A (en) * | 2019-12-02 | 2021-06-10 | 古河産機システムズ株式会社 | Mechanical seal for pump and magnet pump including the same |
-
1987
- 1987-01-23 JP JP1381487A patent/JPS63183298A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021088939A (en) * | 2019-12-02 | 2021-06-10 | 古河産機システムズ株式会社 | Mechanical seal for pump and magnet pump including the same |
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