JPH061078B2 - Grinder pump - Google Patents
Grinder pumpInfo
- Publication number
- JPH061078B2 JPH061078B2 JP1113289A JP11328989A JPH061078B2 JP H061078 B2 JPH061078 B2 JP H061078B2 JP 1113289 A JP1113289 A JP 1113289A JP 11328989 A JP11328989 A JP 11328989A JP H061078 B2 JPH061078 B2 JP H061078B2
- Authority
- JP
- Japan
- Prior art keywords
- end surface
- rotating body
- cutting
- pump
- blade
- 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
Links
- 238000005086 pumping Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 241001149900 Fusconaia subrotunda Species 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】 ［発明の技術分野］ 本発明は、吸液中の固形物、特に長物と称せられる繊維
製品等を短く切断して、液体と共に吐出するグラインダ
ーポンプに関する。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a grinder pump that cuts a solid substance in a liquid absorbing material, particularly a fiber product called a long product into short pieces and discharges them together with the liquid.
［従来技術とその問題点］ 従来のグラインダーポンプは、例えば第７図に見られる
よう、切断用翼片８′‥‥８′の下縁部が均等に導下さ
れた態様に形成されているため、吸液中の短小な固形物
は破砕し得るが、切断用翼片８′‥‥８′の最大径より
も長寸の布帛等の場合は翼片８′‥‥８′間に跨り係止
し、回転状態において釣り合ったままで翼片８′‥‥
８′と共に回転を続け、固定刃の刃溝に流入し難いため
切断機能を発揮し得ないという欠点がある。[Prior Art and its Problems] The conventional grinder pump is formed in such a manner that the lower edges of the cutting blades 8 '... 8'are evenly guided, as shown in FIG. 7, for example. For this reason, short solids in the liquid can be crushed, but in the case of a fabric having a length larger than the maximum diameter of the blades 8 '... 8'for cutting, it is spread over the blades 8' ... 8 '. The wing pieces 8 '...
There is a drawback that the cutting function cannot be exerted because it is difficult to flow into the blade groove of the fixed blade while continuing to rotate together with 8 '.
［発明の目的］ 本発明の目的は、ポンプ吸込口の口径よりも長大な布帛
等の固形物が汚水中に混在していても、これを容易に切
断して汚水と共に吸引し得るグラインダーポンプを提供
することにある。[Object of the Invention] An object of the present invention is to provide a grinder pump capable of easily cutting and sucking together with sewage even when solid matter such as a fabric longer than the diameter of the pump suction port is mixed in the sewage. To provide.
［発明の構成］ 本発明に係るグラインダーポンプでは、ポンプ渦流室内
における揚水羽根車の羽根板下面と対向する吸込カバー
の中心孔より導下された環状導下壁の内周に固定刃を配
設し、揚水羽根車の下方には、環状導下壁と嵌合し下端
面よりも上端面が径大となるよう截頭円錐状に形成せら
れた回転体を定着し、該回転体の外周にはその上端面か
ら導下され外縁部が前記固定刃と対向する２枚の切断用
翼片を対設させてなるグラインダーポンプにおいて、上
記両切断用翼片の下縁部の導下長さに長短差を設けて非
対称状となし、一方の切断用翼片はその下縁部が回転体
の下端面まで達し、他方の切断用翼片はその下縁部が回
転体の下端面まで達することなく凹段部が形成されてい
る。[Structure of the Invention] In the grinder pump according to the present invention, the fixed blade is arranged on the inner circumference of the annular guiding lower wall guided from the central hole of the suction cover facing the blade plate lower surface of the pumping impeller in the pump swirl chamber. Then, below the pumping impeller, there is fixed a rotating body that is fitted into the annular guiding lower wall and is formed in a truncated cone shape so that the upper end surface is larger in diameter than the lower end surface. In a grinder pump in which two cutting blades, which are guided down from the upper end surface and whose outer edges face the fixed blade, are installed in the grinder pump. The cutting edge of one of the cutting blades reaches the lower end surface of the rotating body, and the lower edge of the other cutting blade piece reaches the lower end surface of the rotating body. The concave step portion is formed without any.
［実施例］ 以下実施例の図面により説明をする。[Embodiment] An embodiment will be described below with reference to the drawings.
１はポンプ渦流室、２はポンプ渦流室１内に収容された
揚水羽根車、３は揚水羽根車２の羽根板下面と対向する
吸込カバー、４は吸込カバー３の中心孔、５は中心孔４
より導下された環状導下壁であって、その内周には吸込
路となる溝状の固定刃６‥‥６が縦設されている。７は
環状導下壁５と嵌合する回転体であって、その下端面７
ａよりも上端面７ｂが径大となるよう截頭円錐状に形成
せられ、揚水羽根車２と共に回転するようそのボス部１
０の下方に定着せられている。８ａ，８ｂは外縁部が前
記固定刃６‥‥６と僅かな間隙を保って対向するよう回
転体７の外周に対設された２枚の切断用翼片であって、
これら両翼片８ａ，８ｂの導下長さには長短差が附せら
れて非対称状となり、一方の切断用翼片８ａはその下縁
部が回転体７の下端面７ａまで達し、他方の切断用翼片
８ｂはその下縁部が回転体７の下端面７ａまで達するこ
となく凹段部Ｄが形成されている。また、前記ボス部１
０の下端面１０ｂの外周は回転体７の上端面７ｂの外周
とほぼ同径に形成され、且つ該ボス部１０の根部外周隅
部は円弧Ｒに丸められて揚水羽根車２のシュラウド裏面
と滑らかにつながっている。1 is a pump swirl chamber, 2 is a pump impeller housed in the pump swirl chamber 1, 3 is a suction cover facing the lower surface of the blade plate of the pump impeller 2, 4 is a central hole of the suction cover 3, 5 is a central hole Four
The annular guiding lower wall is further guided, and groove-shaped fixed blades 6 ... 6 serving as suction passages are vertically provided on the inner periphery thereof. Reference numeral 7 denotes a rotating body that fits with the annular guiding lower wall 5 and has a lower end surface 7
It is formed in a truncated cone shape so that the upper end surface 7b is larger in diameter than a, and its boss portion 1 is adapted to rotate together with the pumping impeller 2.
It is fixed below 0. Reference numerals 8a and 8b are two blades for cutting, which are provided on the outer periphery of the rotating body 7 so that the outer edges thereof face the fixed blades 6 ...
The guide lengths of these wing pieces 8a and 8b are asymmetrical due to the difference in length, and one cutting wing piece 8a has its lower edge reaching the lower end surface 7a of the rotating body 7 and the other cutting piece 8a. The blade portion 8b has a recessed step portion D formed so that the lower edge portion thereof does not reach the lower end surface 7a of the rotating body 7. Also, the boss 1
The outer periphery of the lower end surface 10b of 0 is formed to have substantially the same diameter as the outer periphery of the upper end surface 7b of the rotating body 7, and the root outer peripheral corners of the boss portion 10 are rounded into an arc R to serve as the back surface of the shroud of the pumping impeller 2. It is connected smoothly.
［作用］ ポンプ駆動時には、揚水羽根車２と共に回転体７が回転
して、固定刃６‥‥６と切断用翼片８ａ，８ｂとの交差
により夾雑物の切断作用を行わせるのであるが、回転体
７の下端面７ａが径小で環状導下壁５との間に大きな間
隙が形成され、且つ切断用翼片８ａの下縁部には凹段部
Ｄが形成されているので夾雑物を吸い込み易く、２枚の
切断用翼片８ａ，８ｂ間に跨る長寸の固形物は、不均衡
な２枚の翼片８ａ，８ｂによる抵抗差のため偏心状に移
動しつつ凹段部Ｄから環状導下壁５の内周に吸い込ま
れ、更に円錐状回転体７の勾配に沿って縦溝状固定刃６
‥‥６に食い込む状態となり、細かく切断されながらポ
ンプ渦流室１内へ吸い込まれ、揚水と共に吐出口９から
吐出されることになる。[Operation] When the pump is driven, the rotating body 7 rotates together with the pumping impeller 2, and the fixed blades 6 ... 6 and the cutting blades 8a and 8b intersect to cause cutting of foreign matters. Since the lower end surface 7a of the rotating body 7 has a small diameter, a large gap is formed between the lower end surface 7a and the annular guiding lower wall 5, and a concave step portion D is formed at the lower edge portion of the cutting blade piece 8a. It is easy to suck in the long solid matter that extends between the two blades 8a and 8b for cutting, and the concave step portion D moves eccentrically due to the resistance difference between the two blades 8a and 8b that are unbalanced. Is sucked into the inner periphery of the annular guiding lower wall 5 and further along the gradient of the conical rotating body 7, the fixed grooved blade 6
It becomes a state of biting into 6 and is sucked into the pump swirl chamber 1 while being finely cut and discharged from the discharge port 9 together with pumping.
［発明の効果］ 本発明グラインダーポンプにおいては、切断用翼片８
ａ，８ｂを配設した回転体７の下端面７ａが径小で、環
状導下壁５との間に大きな間隙が形成され、且つ２枚の
切断用翼片８ａ，８ｂの下縁部の導下長さに長短差が設
けられて不均衡な態様となっているため、翼片８ａ，８
ｂ間に跨る長寸の繊維製品等も回転時の抵抗差により偏
心状に移動して凹段部Ｄから環状導下壁５の内周へ容易
に吸込まれ、更に円錐状回転体７の勾配に沿って上昇
し、環状導下壁５の内周の固定刃６‥‥６に食い込ませ
られる傾向となり、細かく切断されながらポンプ渦流室
１内へ吸い込まれ揚水と共に吐出口９から吐出されるこ
とになり、従って絡み付きや閉塞を生じるおそれがない
という利点がある。[Effect of the Invention] In the grinder pump of the present invention, the blade 8 for cutting is used.
The lower end surface 7a of the rotating body 7 in which the a and 8b are disposed has a small diameter, a large gap is formed between the lower end surface 7a and the annular guiding lower wall 5, and the lower edge portions of the two cutting blades 8a and 8b are Since the guide lengths are different from each other due to the length difference, the blade pieces 8a, 8a
A long fiber product etc. straddling between b also moves eccentrically due to the resistance difference during rotation and is easily sucked into the inner periphery of the annular guiding lower wall 5 from the concave step D, and further the gradient of the conical rotating body 7 6 tends to be bitten by the fixed blades 6 ... 6 on the inner periphery of the annular guiding lower wall 5 and is sucked into the pump swirl chamber 1 while being finely cut and discharged from the discharge port 9 together with the pumped water. Therefore, there is an advantage that there is no risk of entanglement or blockage.
第１図は本発明グラインダーポンプの要部縦断側面図、
第２図は本発明グラインダーポンプにおける回転体の外
側面図、第３図は本発明グラインダーポンプにおける回
転体の前方から見た平面図、第４図は本発明グラインダ
ーポンプにおける環状導下壁と回転体との嵌合状態を示
した要部縦断側面図、第５図は第４図のＡ−Ａ線におけ
る横断平面図、第６図は第４図のＢ−Ｂ線における横断
平面図、第７図は、従来のグラインダーポンプにおける
環状導下壁と回転体との嵌合状態を示した要部縦断側面
図である。 １‥‥ポンプ渦流室、２‥‥揚水羽根車、３‥‥吸込カ
バー、４‥‥中心孔、５‥‥環状導下壁、６‥‥固定
刃、７‥‥回転体、７ａ‥‥下端面、７ｂ‥‥上端面、
８ａ‥‥一方の切断用翼片、８ｂ‥‥他方の切断用翼
片、１０‥‥ボス部、１０ｂ‥‥下端面、Ｄ……凹段
部。FIG. 1 is a vertical sectional side view of a main part of a grinder pump of the present invention,
FIG. 2 is an outer side view of a rotating body in the grinder pump of the present invention, FIG. 3 is a plan view of the rotating body in the grinder pump of the present invention as seen from the front, and FIG. 4 is rotation with an annular guiding lower wall in the grinder pump of the present invention. FIG. 5 is a cross-sectional plan view taken along the line AA of FIG. 4, FIG. 6 is a cross-sectional plan view taken along the line BB of FIG. 4, and FIG. FIG. 7 is a vertical cross-sectional side view of essential parts showing a fitted state of an annular guide lower wall and a rotating body in a conventional grinder pump. 1 ... Pump vortex chamber, 2 ... Pumping impeller, 3 ... Suction cover, 4 ... Central hole, 5 ... Annular guide lower wall, 6 ... Fixed blade, 7 ... Rotating body, 7a ... End face, 7b ...
8a ... One blade for cutting, 8b ... Other blade for cutting, 10 ... Boss portion, 10b ... Lower end surface, D ... Recessed step portion.
Claims (1)
（２）の羽根板下面と対向する吸込カバー（３）の中心
孔（４）より導下された環状導下壁（５）の内周に固定
刃（６）を配設し、揚水羽根車（２）の下方には、環状
導下壁（５）と嵌合し下端面（７ａ）よりも上端面（７
ｂ）が径大となるよう截頭円錐状に形成せられた回転体
（７）を定着し、該回転体（７）の外周にはその上端面
（７ｂ）から導下され外縁部が前記固定刃（６）と対向
する２枚の切断用翼片（８ａ，８ｂ）を対設させてなる
グラインダーポンプにおいて、上記両切断用翼片（８
ａ，８ｂ）の下縁部の導下長さに長短差を設けて非対称
状となし、一方の切断用翼片（８ａ）はその下縁部が回
転体（７）の下端面（７ａ）まで達し、他方の切断用翼
片（８ｂ）はその下縁部が回転体（７）の下端面（７
ａ）まで達することなく凹段部（Ｄ）が形成されている
ことを特徴とするグラインダーポンプ。1. An annular guiding wall (5) which is guided from a central hole (4) of a suction cover (3) facing the lower surface of a vane plate of a pumping impeller (2) in a pump swirl chamber (1). A fixed blade (6) is arranged on the inner circumference, and below the pumping impeller (2) is fitted with an annular guiding lower wall (5), and the upper end surface (7) is larger than the lower end surface (7a).
The rotating body (7), which is formed in a truncated cone shape so that b) has a large diameter, is fixed, and the outer edge of the rotating body (7) is guided down from its upper end surface (7b) to the outer periphery. A grinder pump comprising two blades for cutting (8a, 8b) facing each other with a fixed blade (6).
a, 8b) the lengths of the lower edges of the lower edges are made different from each other to form an asymmetric shape, and the lower edge of one of the cutting blades (8a) has the lower end surface (7a) of the rotating body (7). And the lower edge of the other blade (8b) for cutting has the lower end surface (7) of the rotating body (7).
A grinder pump characterized in that a concave step (D) is formed without reaching a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1113289A JPH061078B2 (en) | 1989-05-01 | 1989-05-01 | Grinder pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1113289A JPH061078B2 (en) | 1989-05-01 | 1989-05-01 | Grinder pump |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62164773A Division JPH0792073B2 (en) | 1987-06-30 | 1987-06-30 | Grinder pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0216387A JPH0216387A (en) | 1990-01-19 |
| JPH061078B2 true JPH061078B2 (en) | 1994-01-05 |
Family
ID=14608410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1113289A Expired - Lifetime JPH061078B2 (en) | 1989-05-01 | 1989-05-01 | Grinder pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH061078B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374729C (en) * | 2005-02-01 | 2008-03-12 | 江苏迎浪科技集团有限公司 | Vertical crushable self-priming sewage pump |
| DE102016225921A1 (en) * | 2016-12-21 | 2018-06-21 | KSB SE & Co. KGaA | Sewage lifting plant with cutting unit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518982B2 (en) * | 1973-07-28 | 1976-03-23 | ||
| JPS5838396A (en) * | 1981-08-29 | 1983-03-05 | Ebara Corp | Grinder pump |
| SE444969B (en) * | 1982-10-11 | 1986-05-20 | Flygt Ab | Centrifugal pump intended for pumping of liquids containing solid particles |
| JPS6139493U (en) * | 1984-08-17 | 1986-03-12 | 株式会社荏原製作所 | grinder pump |
-
1989
- 1989-05-01 JP JP1113289A patent/JPH061078B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0216387A (en) | 1990-01-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080105 Year of fee payment: 14 |