JPH0792073B2 - Grinder pump - Google Patents
Grinder pumpInfo
- Publication number
- JPH0792073B2 JPH0792073B2 JP62164773A JP16477387A JPH0792073B2 JP H0792073 B2 JPH0792073 B2 JP H0792073B2 JP 62164773 A JP62164773 A JP 62164773A JP 16477387 A JP16477387 A JP 16477387A JP H0792073 B2 JPH0792073 B2 JP H0792073B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- end surface
- rotating body
- blade
- blades
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000004744 fabric 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
- 239000000835 fiber Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile 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、揚水羽根車のボス部の下端面には、環状導下壁と
嵌合す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せられ且つ上記回転体の
上端面と前記ボス部の下端面とがほぼ同径に形成されて
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, on the lower end surface of the boss portion of the pumping impeller, a rotating body formed in a truncated cone shape so as to fit with the annular guiding lower wall is fixed, and the outer periphery of the rotating body is guided from the upper end surface thereof. A grinder pump comprising two blades for cutting whose outer edge is opposed to the fixed blade, and is asymmetrical with a difference in length between the lower edges of both blades for cutting. The lower edge of one cutting wing piece reaches the lower end surface of the rotating body, and the lower edge of the other cutting wing piece does not reach the lower end surface of the rotating body and a concave step is formed. And the upper end surface of the rotating body and the lower end surface of the boss portion are formed to have substantially the same diameter.
［実施例］ 以下実施例の図面により説明する。[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と嵌合するよう截頭円錐状に形成せられた
回転体であって、揚水羽根車２と共に回転するようその
ボス部10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10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 is a rotating body formed in a truncated cone shape so as to fit with the annular guiding lower wall 5, and is fixed below the boss portion 10 so as to rotate together with the pumping impeller 2. 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 length of 8b is asymmetrical with a 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 wing piece 8b is A concave step portion D is formed without the lower edge portion reaching the lower end surface 7a of the rotating body 7. In addition, the lower end surface of the boss portion 10
The outer periphery of 10b 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 outer peripheral corners of the root portion of the boss 10 are rounded into an arc R to smoothly connect to the back surface of the shroud of the pumping impeller 2. There is.
［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8
a,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、更に截頭円錐状回
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 intersect the cutting blades 8a, 8b to cause the 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 things in, and the long solid material that straddles the two blades 8a and 8b for cutting is the unbalanced blade 8
While being eccentrically moved due to the resistance difference due to a and 8b, it is sucked from the concave step portion D to the inner circumference of the annular guiding lower wall 5, and further along the gradient of the truncated cone-shaped rotating body 7, the vertical groove-shaped fixed blade 6 The state of biting into 6 is cut into fine pieces, sucked into the pump swirl chamber 1 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8a,8
b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,8b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
環状導下壁５の内周の溝状固定刃６‥‥６に沿って上昇
しながら細かく切断されるのであるが、回転体７の上端
面7bとボス部10の下端面10bとが同径であるため、揚水
と共にポンプ渦流室１内へ円滑に吸い込まれて吐出口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である。[Effect of the Invention] In the grinder pump of the present invention, the cutting blades 8a, 8
The lower end surface 7a of the rotating body 7 in which the b is disposed has a small diameter, a large gap is formed between the lower body 7 and the annular guiding lower wall 5, and the guiding of the lower edge portion of the two cutting blades 8a, 8b is performed. Since the lengths have a difference in length and are in an imbalanced manner, a long textile product or the like that straddles between the blades 8a, 8b also moves eccentrically due to the resistance difference during rotation, and thus the concave step D 6 is easily sucked into the inner circumference of the annular guiding lower wall 5 and is further finely cut while rising along the groove-shaped fixed blades 6 ... 6 on the inner circumference of the annular guiding lower wall 5. Since the upper end surface 7b of the boss and the lower end surface 10b of the boss portion 10 have the same diameter, they are smoothly sucked into the pump swirl chamber 1 together with the pumped water, and the discharge port 9
This 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
転体の下方から見た平面図、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 the 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 below, and FIG. 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 the annular guiding lower wall and the rotating body in the conventional grinder pump. 1 ... Pump vortex chamber, 2 ... Pumping impeller, 3 ... Suction cover, 4 ... Center hole, 5 ... Annular guide lower wall, 6 ... Fixed blade, 7 ... Rotating body, 7a ... Bottom End face, 7b ... Top face, 8a ...
… One cutting blade, 8b …… the other cutting blade, 10 ……
Boss part, 10b: lower end surface, D: concave step part.
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）のボス部（10）の
下端面（10b）には、環状導下壁（５）と嵌合するよう
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（8a,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（8
a）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）
が形成せられ、且つ上記回転体（７）の上端面（7b）と
前記ボス部（10）の下端面（10b）とがほぼ同径に形成
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 a frustoconical shape is fitted to the lower end surface (10b) of the boss (10) of the pumping impeller (2) so as to fit with the annular guiding lower wall (5). Fixing the rotary body (7) formed on the outer peripheral surface of the rotary body (7), and cutting the outer peripheral edge of the rotary body (7) from the upper end face (7b) of the rotary blade (7) to face the fixed blade (6). In a grinder pump in which the blades (8a, 8b) for the cutting are arranged in a pair, the guiding lengths of the lower edges of both the blades (8a, 8b) for cutting are made asymmetric by making a difference in length. Blade for cutting (8
The lower edge of a) reaches the lower end surface (7a) of the rotating body (7), and the lower edge of the other cutting blade (8b) reaches the lower end surface (7a) of the rotating body (7). Without concave step (D)
And a lower end surface (10b) of the boss (10) and an upper end surface (7b) of the rotating body (7) are formed to have substantially the same diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164773A JPH0792073B2 (en) | 1987-06-30 | 1987-06-30 | Grinder pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164773A JPH0792073B2 (en) | 1987-06-30 | 1987-06-30 | Grinder pump |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1113289A Division JPH061078B2 (en) | 1989-05-01 | 1989-05-01 | Grinder pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS648392A JPS648392A (en) | 1989-01-12 |
| JPH0792073B2 true JPH0792073B2 (en) | 1995-10-09 |
Family
ID=15799663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62164773A Expired - Lifetime JPH0792073B2 (en) | 1987-06-30 | 1987-06-30 | Grinder pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0792073B2 (en) |
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 |
-
1987
- 1987-06-30 JP JP62164773A patent/JPH0792073B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS648392A (en) | 1989-01-12 |
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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: 20071009 Year of fee payment: 12 |