CN104100534A - Submersible cutting sewage pump with efficient hydraulic performance - Google Patents
Submersible cutting sewage pump with efficient hydraulic performance Download PDFInfo
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- CN104100534A CN104100534A CN201410318134.8A CN201410318134A CN104100534A CN 104100534 A CN104100534 A CN 104100534A CN 201410318134 A CN201410318134 A CN 201410318134A CN 104100534 A CN104100534 A CN 104100534A
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Abstract
The invention relates to a submersible cutting sewage pump with efficient hydraulic performance and belongs to the technical field of submersible pumps. The submersible cutting sewage pump comprising a submersible motor is characterized in that the submersible motor is connected with a pump body below through a connection segment to form a cooling and lubricating oil chamber; an efficient large-pass semi-open impeller having a rear cover plate is disposed in the center of the lower portion of the pump body; an inlet edge of each impeller blade is provided with a 30-45-degree large guiding tilt angle from the rear cover plate and a front cover plate, and a center line of an impeller blade outlet pass is flush with a center line of a radial outlet of the pump body; the lower end face of the pump body is connected with a pump base, a cutting disc which is axially adjustable is connected to the upper portion of the pump base, the cross section of the upper end of the cutting disc is completely the same as a flow surface of the front cover plate, projecting to the impeller blade axial surface, in shape, and a 0.2-0.3 mm required gap can be formed between the upper end of the cutting disc and the flow surface of the front cover plate, projecting to the impeller blade, by adjusting axial movement of the cutting disc. The submersible cutting sewage pump is high in hydraulic efficiency, has a wide efficient area, allows suctioning and passage of large particles, and has good effect of impurity cutting and tearing.
Description
Technical field
The invention belongs to submersible pump technical field, particularly a kind of diving cutting dredge pump that possesses high-efficiency hydraulic characteristic, relates in particular to this submersible sewage pump structure.
Background technique
The cutting type diving cutting dredge pump of prior art adopts mounting structural mode before and after blowdown pump impeller water intake arranges dead knife and rotating knife, on dead knife, be provided with the several that blade is tangent of several flowing holes and rotating knife, play dissection, or dead knife is equipped with in the inlet at the pump housing, dead knife inner circumference is provided with three or three above cutter head; At the inner ring center of dead knife, a rotating knife is housed; Rotating knife is fixed on pump shaft; On the cylindrical of rotating knife, be provided with two or two above cutter head; The cutter head of dead knife and the cutter head of rotating knife are inside and outside tangent.Dead knife is set and rotating knife will certainly produce certain resistance to the suction performance of pumped medium at impeller intake like this, especially in the time of large flow region operation, pumped medium there will be the separation of flow, pumping lift has downslide, and then makes pump duty-heat-capacity curve occur flex point phenomenon.Simultaneously, in operation process, also having fibre object is wrapped on pump shaft and rotating cutter head by the rotating knife rotating shaft and the accessory fixture that are arranged on impeller intake place, further block the suction of pumped medium, when serious, make pollution discharge pump produce resistance and turn phenomenon, even cause that motor overheating burns out motor stator winding.
Summary of the invention
The technical issues that need to address of the present invention have been to provide a kind of diving cutting dredge pump that possesses high-efficiency hydraulic characteristic, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: the diving cutting dredge pump that possesses high-efficiency hydraulic characteristic, comprise submersible motor, it is characterized in that described submersible motor is connected with the pump housing of its below by connecting section, forms cooling, oil chamber between connecting section and the pump housing; An efficient large runner half-opened impeller with back shroud is settled in lower central position in the described pump housing; The inlet side back shroud of described efficient large runner half-opened impeller blade is to adopting 30～45 ° of large inclined angle navigation designings between front shroud, the contour alignment of radially center line of discharge of impeller blade outlet flow center line and the pump housing; Described pump housing lower end surface is connected with pump-foot; Described pump-foot top connects cutting disk that can axial adjustment, cutting disk is the bottom in impeller in the pump housing, it is in full accord that the front shroud stream interface shape of cutting disk upper end portion section shape and impeller blade axis plane projection keeps, and can be by regulating cutting disk axial displacement to make cutting disk upper end portion and impeller blade front shroud stream interface form 0.2～0.3 required gap of mm.
Usually, described connecting section comprises step and sealing grease chamber, and lower supporting bearing and a set of lip type oil sealing or single mechanical end face seal are housed in the middle of connecting section; Middle lower supporting bearing is fixed with back-up ring or bearing gland by a hole, and single mechanical end face seal string is fixed by a shaft block ring on pump shaft.
In cooling, the oil chamber of described connecting section and its below pump housing, be provided with oil room leaking water inlet guard electrode probe.
The number of blade of described efficient large runner half-opened impeller is 1-3 piece.
Described efficient large runner half-opened impeller is fixed on pump shaft lower end by flat key, bolt or nut, and a set of single mechanical end face seal is installed on pump shaft.
Described pump housing lower end surface is fixedly connected with pump-foot by bolt.
In the middle of described cutting disk upper end portion, be provided with a water intake, water intake periphery is provided with three secondary cutting edge mouths, water intake peripheral radial arranged outside has end face seal section, end face seal section peripheral radial outside is evenly provided with three packet sizes, shape is identical, and shape line angle degree and impeller blade working surface front shroud streamline all form angle spiral secondary cut cutting edge and the material to be cut extruding and kneading of angle of shear 35-50 °, cutting, separate sealing, discharge the staircase areas that row cuts, in addition, angle spiral secondary cut cutting edge and material to be cut extruding and kneading, cutting, separate sealing, discharge and arrange the setting party who cuts staircase areas to consistent with pumped medium relative movement flow field direction in impeller channel.
Compared with prior art, the invention has the beneficial effects as follows:
Beneficial effect of the present invention is: normally suck under the condition of medium not affecting pollution discharge pump water intake, by arrange in cutting disk center portion that can axial adjustment pollution discharge pump water inlet suction port and a secondary cutting edge mouth and cutting disk upper end portion setting party to impeller channel in pumped medium relative movement flow field direction the secondary cut cutting edge and the extruding and kneading that reach unanimity, cutting, separate sealing, discharge the staircase areas that row cuts, utilize the high-efficiency hydraulic model impeller blade working surface front shroud streamline of 1-3 pieces of blades of large runner semi-open type and the sharp-pointed angle of front side of vane formation to make with the on all four cutting disk of front shroud stream interface shape that dissects section configuration and impeller blade axis plane projection the shearing force that relative movement running torque produces in High Rotation Speed process, and cutting cutting edge is equipped with to the 35-50 ° of best angle of shear, pass through axial adjustment, cutting disk upper end portion and impeller blade front shroud stream interface are adjusted to the required minimum gap of 0.2～0.3 mm.Make the foreign material that pollution discharge pump can cut smoothly in the time of operation, pumping enters, and discharge smoothly.Operating conditions when this structural design has greatly been improved the suction performance of pollution discharge pump and flow region is moved greatly, make pollution discharge pump in the time of pumped medium, there will not be the separation of flow, pumping lift has downslide phenomenon, and then pump duty-heat-capacity curve is changed steadily, efficient region broadness, suction and large by particle, it is effective that impurity is torn in cutting.Meanwhile, also avoid the winding problem of the foreign material such as fiber, thereby reached normal, safe pumping and cut the effect such as foreign material and split fibre thing in sewage.
Diving cutting dredge pump provided by the invention, design ingenious, simple in structure, hydraulic power part structure is smooth, use, adjusting and easy to maintenance.Be specially adapted to pumping containing solid matter and long stapled biogas charging, natural pond slag discharge, domestic waste water, municipal wastewater and industrial wastewater, and can also meet the delivery requirements of the sewage, slime water and the surface water that comprise ight soil and mud etc. and contain a large amount of suspended solids and fibrous matter, also can in the course of conveying of the sewage of other Special Categories, use.
Brief description of the drawings
Fig. 1 is the diving cutting dredge pump structural representation of the embodiment of the present invention.
The mansion TV structure schematic diagram of angle of shear change procedure when cut for fixing cutting disk cutting edge and the motion of rotary blade blade cutting edge in embodiment Fig. 2-4.
Fig. 5, the 6th, blade wheel structure schematic diagram in embodiment.
Fig. 7-9th, cutting disk structural representation in embodiment.
Figure 10 is the comparative example Germany HOMA GRP56-111 of company series of cuts submerged pump product performance characteristic curves (being mainly as large flow region Q-H curve and the comparison of pump operation characteristic).
Figure 11 is embodiment's product testing performance characteristic.
In figure, 1-submersible motor; 2-pump shaft; 3-hole back-up ring; 4-bearing; 5-shaft block ring; 6-lip oil sealing; 7-step; 8-electrode probe; 9-impeller; 10-spiral case; 11-cutting disk; 12-pump-foot; 13-mechanical seal; 14,16,18,19-bolt; 15-flat key; 17-adjusting bolt.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
Embodiment: the diving cutting dredge pump structure that the present embodiment possesses high-efficiency hydraulic characteristic as shown in Figure 1, mainly comprise submersible motor 1, its main feature is that described submersible motor 1 is connected with the pump housing (spiral case 10) of its below by connecting section (step 7), between connecting section (step 7) and the pump housing (spiral case 10), forms cooling, oil chamber; An efficient large runner half-opened impeller 9 with back shroud is settled in lower central position in the described pump housing (spiral case 10); Referring to Fig. 5,6, the inlet side 903 of described efficient large runner half-opened impeller 9 blades adopts 30～45 ° of large inclined angle navigation designings to front shroud extension from back shroud, the contour alignment of radially center line of discharge of impeller 9 blade exit runner center lines and the pump housing (spiral case 10); The described pump housing (spiral case 10) lower end surface is connected with pump-foot 12; Described pump-foot 12 tops connect cutting disk 11 that can axial adjustment, cutting disk 11 is the bottom in impeller 9 in the pump housing (spiral case 10), referring to Fig. 7-9, cutting disk 11 upper end portion section shapes 1104 keep in full accord with front shroud stream interface 901 shapes of impeller 9 blade axis plane projections, and can be by regulating cutting disk 11 axial displacements to make cutting disk upper end portion 1104 and impeller blade front shroud stream interface 901 form 0.2～0.3 required gap of mm.
Described connecting section (step 7) and sealing grease chamber, be equipped with lower supporting bearing 4 and a set of lip type oil sealing 6 or single mechanical end face seal in order to stop cooling, lubricant oil in the grease chamber of bottom to enter upper bearing chamber and motor stator chamber in the middle of connecting section (step 7).
Bearing 4 in the middle of described connecting section (step 7) is fixed with back-up ring 3 or bearing gland by a hole, and single mechanical end face seal 13 is gone here and there on pump shaft fixing by a shaft block ring 5.
In cooling, the oil chamber that described connecting section (step 7) and the pump housing (spiral case 10) of its below form, be provided with oil room leaking water inlet guard electrode probe 8.
Referring to accompanying drawing 1,5,6, the inlet side 903 of described efficient large runner half-opened impeller 9 blades adopts 30～45 ° of large inclined angle navigation designings to front shroud extension from back shroud, the contour alignment of radially center line of discharge of impeller 9 blade exit runner center lines and the pump housing (spiral case 10).
Referring to accompanying drawing 1, described efficient large runner half-opened impeller 9 is arranged on pump shaft 2 underparts, is firmly fixed on pump shaft 2 lower ends by flat key 15, bolt 14 or nut; On pump shaft 2 in the described pump housing (spiral case 10) and bottom half-opened impeller 9 axial spaces, arrange and install a set of single mechanical end face seal 13, in order to stop pumped medium to enter cooling, oil chamber; The described pump housing (spiral case 10) lower end surface is connected with pump-foot 12, and pump-foot 12 is for supporting the total weight of integral cutting formula proof submersible sand discharging pump, and is firmly connected with the pump housing (spiral case 10) lower end surface screw with bolt 18.
Referring to accompanying drawing 1,5-9, described pump-foot 12 tops are connected and fixed one and can regulating under adjusting bolt 17 adjustings, realize the cutting disk of axial adjustment
11, described cutting disk 11 bottom in impeller 9 in the pump housing (spiral case 10) that can axial adjustment, front shroud stream interface 901 shapes of cutting disk 11 upper end portion 1104 section shapes and impeller 9 blade axis plane projections keep in full accord, and can be by regulating cutting disk 11 axial displacements to make cutting disk upper end portion 1104 and impeller blade front shroud stream interface 901 form 0.2～0.3 required gap of mm.
Referring to accompanying drawing 7-9, in the middle of described cutting disk upper end portion 1104, be provided with a water intake, water intake periphery is provided with three secondary cutting edge mouths 1101, water intake peripheral radial arranged outside has end face seal section 1104, end face seal section 1104 peripheral radial outsides are evenly provided with three packet sizes, shape is identical, and molded line angle and impeller blade working surface front shroud streamline 901 all form angle spiral secondary cut cutting edge 1103 and the material to be cut extruding and kneading 1102 of best angle of shear 35-50 ° (referring to Fig. 2-4), cutting 1103, separate sealing 1104, discharge and arrange the staircase areas of cutting 1105, and angle spiral secondary cut cutting edge 1103 and material to be cut extruding and kneading 1102, cutting 1103, separate sealing 1104, discharge setting party that row cuts 1105 staircase areas to impeller channel in pumped medium relative movement flow field direction reach unanimity.
Embodiment's diving cutting dredge pump in the time of cutting pumped medium contained foreign material cutting frequency up to 26000～4410 beats/min, (the present embodiment: Impeller Design rotation speed n=2900-1470r/min, Impeller Design number of blade Z=1～3 piece), that row cuts is smooth and easy, block resistance is superior, pumped medium secondary returning flow is little, good sealing effect, volumetric efficiency are high.
With current domestic existing diving cutting dredge pump (as China Patent No.: 201220121338.9 cutting type proof submersible sand discharging pumps), and the German HOMA GRP56-111 of company series of cuts submerged pump (referring to accompanying drawing 10 and table 1) is compared, product (referring to accompanying drawing 11 and table 2) the impeller intake design of the present embodiment is sensible, smooth, is more conducive to the large particle suction of diving cutting dredge pump and high efficiency maintenance and continuity within the scope of large flow region.Through the test of production and hydraulic characteristic, described diving cutting dredge pump hydraulic efficiency is high, efficient region is broad, suck and large by particle, that impurity is torn in cutting is effective.
The German HOMA of table 1 GRP56-111 of company series of cuts submerged pump performance parameter:
Table 2 the present embodiment particular product performance parameters:
。
Claims (7)
1. a diving cutting dredge pump that possesses high-efficiency hydraulic characteristic, comprises submersible motor, it is characterized in that described submersible motor is connected with the pump housing of its below by connecting section, forms cooling, oil chamber between connecting section and the pump housing; An efficient large runner half-opened impeller with back shroud is settled in lower central position in the described pump housing; The inlet side back shroud of described efficient large runner half-opened impeller blade is to adopting 30～45 ° of large inclined angle navigation designings between front shroud, the contour alignment of radially center line of discharge of impeller blade outlet flow center line and the pump housing; Described pump housing lower end surface is connected with pump-foot; Described pump-foot top connects cutting disk that can axial adjustment, cutting disk is the bottom in impeller in the pump housing, it is in full accord that the front shroud stream interface shape of cutting disk upper end portion section shape and impeller blade axis plane projection keeps, and can be by regulating cutting disk axial displacement to make cutting disk upper end portion and impeller blade front shroud stream interface form 0.2～0.3 required gap of mm.
2. diving cutting dredge pump according to claim 1, is characterized in that described connecting section comprises step and sealing grease chamber, is equipped with lower supporting bearing and a set of lip type oil sealing or single mechanical end face seal in the middle of connecting section; Middle lower supporting bearing is fixed with back-up ring or bearing gland by a hole, and single mechanical end face seal string is fixed by a shaft block ring on pump shaft.
3. diving cutting dredge pump according to claim 1, is characterized in that being provided with oil room leaking water inlet guard electrode probe in cooling, the oil chamber of described connecting section and its below pump housing.
4. diving cutting dredge pump according to claim 1, is characterized in that the number of blade of described efficient large runner half-opened impeller is 1-3 piece.
5. according to the diving cutting dredge pump described in claim 1 or 4, it is characterized in that described efficient large runner half-opened impeller by flat key, bolt or nut be fixed on pump shaft lower end, a set of single mechanical end face seal is installed on pump shaft.
6. diving cutting dredge pump according to claim 1, is characterized in that described pump housing lower end surface is fixedly connected with pump-foot by bolt.
7. according to the diving cutting dredge pump described in claim 1 or 4, it is characterized in that being provided with a water intake in the middle of described cutting disk upper end portion, water intake periphery is provided with three secondary cutting edge mouths, water intake peripheral radial arranged outside has end face seal section, end face seal section peripheral radial outside is evenly provided with three packet sizes, shape is identical, and shape line angle degree and impeller blade working surface front shroud streamline all form angle spiral secondary cut cutting edge and the material to be cut extruding and kneading of angle of shear 35-50 °, cutting, separate sealing, discharge the staircase areas that row cuts, in addition, angle spiral secondary cut cutting edge and material to be cut extruding and kneading, cutting, separate sealing, discharge and arrange the setting party who cuts staircase areas to consistent with pumped medium relative movement flow field direction in impeller channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410318134.8A CN104100534B (en) | 2014-07-07 | 2014-07-07 | A kind of diving cutting dredge pump possessing high-efficiency hydraulic characteristic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410318134.8A CN104100534B (en) | 2014-07-07 | 2014-07-07 | A kind of diving cutting dredge pump possessing high-efficiency hydraulic characteristic |
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| Publication Number | Publication Date |
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| CN104100534A true CN104100534A (en) | 2014-10-15 |
| CN104100534B CN104100534B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410318134.8A Active CN104100534B (en) | 2014-07-07 | 2014-07-07 | A kind of diving cutting dredge pump possessing high-efficiency hydraulic characteristic |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179260A (en) * | 2015-10-02 | 2015-12-23 | 何英好 | Sewage pump |
| CN106122040A (en) * | 2016-08-18 | 2016-11-16 | 上海冠民环保科技有限公司 | A kind of no-blocking pollution discharging pump |
| CN107514367A (en) * | 2017-09-30 | 2017-12-26 | 浙江固达泵业有限公司 | One kind cutting sewage/waste electrical submersible pump |
| CN108533500A (en) * | 2018-03-26 | 2018-09-14 | 石家庄开发区石泵泵业有限公司 | A kind of cutting pump installation for cutting fluid |
| CN111794973A (en) * | 2020-06-30 | 2020-10-20 | 杭州三洋泵业有限公司 | Magnetic centrifugal pump for conveying granular medium |
| CN113819062A (en) * | 2021-09-15 | 2021-12-21 | 尚宝罗江苏节能科技股份有限公司 | Centrifugal conveying pump |
| CN114810611A (en) * | 2022-04-01 | 2022-07-29 | 南京科技职业学院 | Improve immersible pump of mechanical seal operational environment |
| WO2023024553A1 (en) * | 2021-11-25 | 2023-03-02 | 江苏徐工工程机械研究院有限公司 | Submersible pump and drainage emergency vehicle |
| CN116771684A (en) * | 2023-08-15 | 2023-09-19 | 江苏江进泵业有限公司 | Anti-blocking submersible sewage pump |
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| CN201013653Y (en) * | 2007-06-21 | 2008-01-30 | 浙江大元泵业有限公司 | Cutting type sewage water or feculence electric underwater pump |
| CN202273896U (en) * | 2011-09-05 | 2012-06-13 | 上海潜水泵有限公司 | Cutting device for small submersible pump |
| CN203500042U (en) * | 2013-09-03 | 2014-03-26 | 上海人民企业集团水泵有限公司 | Cutting-type sewage submersible electric pump |
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| CN2591301Y (en) * | 2002-12-18 | 2003-12-10 | 上海凯泉泵业（集团）有限公司 | Sewage pump capable of shredding varia |
| WO2005002732A1 (en) * | 2003-06-27 | 2005-01-13 | Envirotech Pumpsystems, Inc. | Pump impeller and chopper plate for a centrifugal pump |
| CN201013653Y (en) * | 2007-06-21 | 2008-01-30 | 浙江大元泵业有限公司 | Cutting type sewage water or feculence electric underwater pump |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179260A (en) * | 2015-10-02 | 2015-12-23 | 何英好 | Sewage pump |
| CN106122040A (en) * | 2016-08-18 | 2016-11-16 | 上海冠民环保科技有限公司 | A kind of no-blocking pollution discharging pump |
| CN107514367A (en) * | 2017-09-30 | 2017-12-26 | 浙江固达泵业有限公司 | One kind cutting sewage/waste electrical submersible pump |
| CN108533500A (en) * | 2018-03-26 | 2018-09-14 | 石家庄开发区石泵泵业有限公司 | A kind of cutting pump installation for cutting fluid |
| CN111794973A (en) * | 2020-06-30 | 2020-10-20 | 杭州三洋泵业有限公司 | Magnetic centrifugal pump for conveying granular medium |
| CN113819062A (en) * | 2021-09-15 | 2021-12-21 | 尚宝罗江苏节能科技股份有限公司 | Centrifugal conveying pump |
| WO2023024553A1 (en) * | 2021-11-25 | 2023-03-02 | 江苏徐工工程机械研究院有限公司 | Submersible pump and drainage emergency vehicle |
| CN114810611A (en) * | 2022-04-01 | 2022-07-29 | 南京科技职业学院 | Improve immersible pump of mechanical seal operational environment |
| CN114810611B (en) * | 2022-04-01 | 2022-12-20 | 南京科技职业学院 | Improve mechanical seal operational environment's immersible pump |
| CN116771684A (en) * | 2023-08-15 | 2023-09-19 | 江苏江进泵业有限公司 | Anti-blocking submersible sewage pump |
| CN116771684B (en) * | 2023-08-15 | 2023-10-31 | 江苏江进泵业有限公司 | Anti-blocking submersible sewage pump |
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| CN104100534B (en) | 2016-04-20 |
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Denomination of invention: Submersible cutting sewage pump with efficient hydraulic performance Effective date of registration: 20180930 Granted publication date: 20160420 Pledgee: Bank of China Limited by Share Ltd Nanjing Liuhe sub branch Pledgor: NANJING ZHONGDE ENVIRONMENTAL PROTECTION EQUIPMENT MANUFACTURING CO., LTD. Registration number: 2018320000214 |
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Date of cancellation: 20200511 Granted publication date: 20160420 Pledgee: Bank of China Limited by Share Ltd Nanjing Liuhe sub branch Pledgor: NANJING ZHONGDE ENVIRONMENTAL PROTECTION EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: 2018320000214 |
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