CN104100534B - A kind of diving cutting dredge pump possessing high-efficiency hydraulic characteristic - Google Patents
A kind of diving cutting dredge pump possessing high-efficiency hydraulic characteristic Download PDFInfo
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- CN104100534B CN104100534B CN201410318134.8A CN201410318134A CN104100534B CN 104100534 B CN104100534 B CN 104100534B CN 201410318134 A CN201410318134 A CN 201410318134A CN 104100534 B CN104100534 B CN 104100534B
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Abstract
Possess a diving cutting dredge pump for high-efficiency hydraulic characteristic, belong to submersible pump technical field.Comprise submersible motor, it is characterized in that described submersible motor to be connected with the pump housing below it by connecting section and formed cool, oil chamber; An efficient large runner half-opened impeller with back shroud is settled in pump housing lower central position; The inlet side back shroud of impeller blade adopts 30 ~ 45 ° of large inclined angle navigation designings between front shroud, and impeller blade outlet flow center line aligns with the radial center line of discharge of the pump housing is contour; Pump housing lower end surface is connected with pump-foot, pump-foot top connects can the cutting disk of axial adjustment, the front shroud stream interface form trait of cutting disk upper end portion section shape and impeller blade axis plane projection is completely the same, and by regulating cutting disk axial displacement to make cutting disk upper end portion and impeller blade front shroud stream interface form gap needed for 0.2 ~ 0.3mm.Hydraulic efficiency is high, efficient region is broad, suck and large by particle, that impurity is torn in cutting is effective.
Description
Technical field
The invention belongs to submersible pump technical field, particularly a kind of diving cutting dredge pump possessing high-efficiency hydraulic characteristic, particularly relate to this submersible sewage pump structure.
Background technique
The cutting type diving cutting dredge pump of prior art adopts and arranges mounting structural mode before and after dead knife and rotating knife at blowdown pump impeller water intake, dead knife is provided with the several that blade is tangent of several flowing hole and rotating knife, play dissection, or in the inlet of the pump housing, dead knife is housed, 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; The cylindrical of rotating knife is provided with two or two above cutter head; Tangent inside and outside the cutter head of dead knife and the cutter head of rotating knife.At impeller intake dead knife is set and rotating knife will certainly produce certain resistance to the suction performance of pumped medium like this, especially when large discharge area 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 have fibre object is wrapped on pump shaft and rotating cutter head by the rotating knife rotating shaft and accessory fixture being arranged on impeller intake place, the suction of further obstruction pumped medium, make pollution discharge pump produce resistance time serious and turn phenomenon, even cause motor overheating to burn out motor stator winding.
Summary of the invention
The technical issues that need to address of the present invention there is provided a kind of diving cutting dredge pump possessing 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 possessing high-efficiency hydraulic characteristic, comprise submersible motor, it is characterized in that described submersible motor is connected with the pump housing below it by connecting section, between connecting section and the pump housing, form cooling, oil chamber; 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 adopts 30 ~ 45 ° of large inclined angle navigation designings between front shroud, and impeller blade outlet flow center line aligns with the radial center line of discharge of the pump housing is contour; Described pump housing lower end surface is connected with pump-foot; Described pump-foot top connects can the cutting disk of axial adjustment, cutting disk is in the bottom of impeller in the pump housing, the front shroud stream interface form trait of cutting disk upper end portion section shape and impeller blade axis plane projection is completely the same, and by regulating cutting disk axial displacement to make cutting disk upper end portion and impeller blade front shroud stream interface form gap needed for 0.2 ~ 0.3mm.
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 by a hole back-up ring or bearing gland, and single mechanical end face seal string is fixed by a shaft block ring on pump shaft.
Oil room leaking water enter preventing electrode probe is provided with in described connecting section and the cooling of the pump housing below it, oil chamber.
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, pump shaft is installed a set of single mechanical end face seal.
Described pump housing lower end surface is fixedly connected with pump-foot by bolt.
A water intake is provided with 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, three packet sizes are evenly provided with outside end face seal section peripheral radial, 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, be separated sealing, the staircase areas of cutting is arranged in release, in addition, angle spiral secondary cut cutting edge and material to be cut extruding and kneading, cutting, be separated sealing, the setting direction that release row cuts staircase areas is 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: under not affecting pollution discharge pump water intake and normally sucking the condition of medium, by the cutting disk center portion of axial adjustment the secondary cut cutting edge and extruding and kneading that in pollution discharge pump water inlet suction port and a secondary cutting edge mouth and cutting disk upper end portion setting direction and impeller channel, pumped medium relative movement flow field direction reaches unanimity can be arranged, cutting, be separated sealing, the staircase areas of cutting is arranged in release, the sharp concave corners utilizing the high-efficiency hydraulic model impeller blade working surface front shroud streamline of large runner semi-open type 1-3 pieces of blades and front side of vane to be formed makes the shearing force that relative movement running torque produces in high-speed rotation with the on all four cutting disk of front shroud stream interface shape of cutting section configuration and impeller blade axis plane projection, and cutting cutting edge is equipped with 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 minimum gap needed for 0.2 ~ 0.3mm.Make the foreign material that pollution discharge pump operationally can cut smoothly, pumping enters, and discharge smoothly.This structural design significantly improves operating conditions during suction performance and the large discharge area operation of pollution discharge pump, pollution discharge pump is made to there will not be the separation of flow when pumped medium, pumping lift has downslide phenomenon, and then make pump duty-heat-capacity curve change steadily, efficient region is broad, suck and pass through particle greatly, it is effective that impurity is torn in cutting.Meanwhile, it also avoid the winding problem of the foreign material such as fiber, thus reach 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, structure is simple, hydraulic power part structure is smooth, use, regulate and easy to maintenance.Be specially adapted to pumping containing solid matter and long stapled biogas charging, the discharge of natural pond slag, domestic waste water, municipal wastewater and industrial wastewater, and the delivery requirements comprising the sewage containing a large amount of suspended solid and fibrous matter such as ight soil and mud, slime water and surface water can also be met, also can use in the course of conveying of the sewage of other Special Categories.
Accompanying drawing explanation
Fig. 1 is the diving cutting dredge pump structural representation of the embodiment of the present invention.
Fig. 2-4 fixes cutting disk cutting edge and rotating impeller blades cutting edge to move the mansion TV structure schematic diagram of angle of shear change procedure when cutting in embodiment.
Fig. 5,6 is blade wheel structure schematic diagram in embodiment.
Fig. 7-9 is cutting disk structural representations in embodiment.
Figure 10 is comparative example Germany HOMA company GRP56-111 series of cuts submerged pump product performance characteristic curve (being mainly used as large discharge region Q-H curve and pump operation Property comparison).
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 present embodiment possesses the diving cutting dredge pump structure of 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) below it by connecting section (step 7), formed between connecting section (step 7) and the pump housing (spiral case 10) cool, 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); See Fig. 5,6, the inlet side 903 of described efficient large runner half-opened impeller 9 blade adopts 30 ~ 45 ° of large inclined angle navigation designings from back shroud to front shroud extension, and impeller 9 blade exit runner center line aligns with the radial center line of discharge of the pump housing (spiral case 10) is contour; The described pump housing (spiral case 10) lower end surface is connected with pump-foot 12; Described pump-foot 12 top connects can the cutting disk 11 of axial adjustment, cutting disk 11 is in the bottom of impeller 9 in the pump housing (spiral case 10), see Fig. 7-9, cutting disk 11 upper end portion section shape 1104 is completely the same with front shroud stream interface 901 form trait of impeller 9 blade axis plane projection, and by regulating cutting disk 11 axial displacement to make cutting disk upper end portion 1104 and impeller blade front shroud stream interface 901 form gap needed for 0.2 ~ 0.3mm.
Described connecting section (step 7) and sealing grease chamber, be equipped with in the middle of connecting section (step 7) lower supporting bearing 4 and a set of lip type oil sealing 6 or single mechanical end face seal in order to stop the cooling in the grease chamber of bottom, lubricant oil enters upper bearing room and motor stator chamber.
Bearing 4 in the middle of described connecting section (step 7) is fixed by a hole back-up ring 3 or bearing gland, and single mechanical end face seal 13 is gone here and there on pump shaft fixing by a shaft block ring 5.
Oil room leaking water enter preventing electrode probe 8 is provided with in the cooling that described connecting section (step 7) is formed with the pump housing (spiral case 10) below it, oil chamber.
See accompanying drawing 1,5,6, the inlet side 903 of described efficient large runner half-opened impeller 9 blade adopts 30 ~ 45 ° of large inclined angle navigation designings from back shroud to front shroud extension, and impeller 9 blade exit runner center line aligns with the radial center line of discharge of the pump housing (spiral case 10) is contour.
See accompanying drawing 1, described efficient large runner half-opened impeller 9 is arranged on pump shaft 2 underpart, is firmly fixed on pump shaft 2 lower end by flat key 15, bolt 14 or nut; Pump shaft 2 in the described pump housing (spiral case 10) with bottom half-opened impeller 9 axial space arranged and a set of single mechanical end face seal 13 is installed, entering cooling, oil chamber in order to stop pumped medium; The described pump housing (spiral case 10) lower end surface is connected with pump-foot 12, and pump-foot 12 for the total weight of supporting integral cutting type proof submersible sand discharging pump, and is firmly connected with the pump housing (spiral case 10) lower end surface screw with bolt 18.
See accompanying drawing 1,5-9, described pump-foot 12 top is connected and fixed one under adjustment adjusting bolt 17 regulates, can realize the cutting disk of axial adjustment
11, described the cutting disk 11 of axial adjustment can be in the bottom of impeller 9 in the pump housing (spiral case 10), front shroud stream interface 901 form trait of cutting disk 11 upper end portion 1104 section shape and impeller 9 blade axis plane projection is completely the same, and by regulating cutting disk 11 axial displacement to make cutting disk upper end portion 1104 and impeller blade front shroud stream interface 901 form gap needed for 0.2 ~ 0.3mm.
See accompanying drawing 7-9, a water intake is provided with in the middle of described cutting disk upper end portion 1104, water intake periphery is provided with three secondary cutting edge mouths 1101, water intake peripheral radial arranged outside has end face seal section 1104, three packet sizes are evenly provided with outside end face seal section 1104 peripheral radial, 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 ° (see Fig. 2-4), cutting 1103, be separated sealing 1104, release row cuts the staircase areas of 1105, and angle spiral secondary cut cutting edge 1103 and material to be cut extruding and kneading 1102, cutting 1103, be separated sealing 1104, release row cuts pumped medium relative movement flow field direction in the setting direction of 1105 staircase areas and impeller channel and reaches unanimity.
The diving cutting dredge pump of embodiment when cutting foreign material contained by pumped medium cutting frequency up to 26000 ~ 4410 beats/min, (the present embodiment: Impeller Design rotating speed n=2900-1470r/min, Impeller Design number of blade Z=1 ~ 3 piece), row cut 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 German HOMA company GRP56-111 series of cuts submerged pump (see accompanying drawing 10 and table 1) is compared, product (see accompanying drawing 11 and table 2) the impeller intake design of the present embodiment is sensible, smooth, and the large particle being more conducive to diving cutting dredge pump sucks and high efficiency maintenance in large discharge regional extent and continuity.Through production and hydraulic characteristic test, 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.
Table 1 German HOMA company GRP56-111 series of cuts submerged pump performance parameter:
Table 2 the present embodiment particular product performance parameters:
。
Claims (5)
1. possess a diving cutting dredge pump for high-efficiency hydraulic characteristic, comprise submersible motor, it is characterized in that described submersible motor is connected with the pump housing below it by connecting section, between connecting section and the pump housing, form cooling, oil chamber, 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 adopts 30 ~ 45 ° of large inclined angle navigation designings between front shroud, and impeller blade outlet flow center line aligns with the radial center line of discharge of the pump housing is contour, described pump housing lower end surface is connected with pump-foot, described pump-foot top connects can the cutting disk of axial adjustment, cutting disk is in the bottom of impeller in the pump housing, the front shroud stream interface form trait of cutting disk upper end portion section shape and impeller blade axis plane projection is completely the same, and by regulating cutting disk axial displacement to make cutting disk upper end portion and impeller blade front shroud stream interface form gap needed for 0.2 ~ 0.3mm, the number of blade of described efficient large runner half-opened impeller is 1-3 piece, a water intake is provided with 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, three packet sizes are evenly provided with outside end face seal section peripheral radial, 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, be separated sealing, the staircase areas of cutting is arranged in release, in addition, angle spiral secondary cut cutting edge and material to be cut extruding and kneading, cutting, be separated sealing, the setting direction that release row cuts staircase areas is consistent with pumped medium relative movement flow field direction in impeller channel.
2. diving cutting dredge pump according to claim 1, is characterized in that 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 by a hole back-up ring or bearing gland, 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 described connecting section and the cooling of the pump housing below it, is provided with oil room leaking water enter preventing electrode probe in oil chamber.
4. diving cutting dredge pump according to claim 1, is characterized in that described efficient large runner half-opened impeller is fixed on pump shaft lower end by flat key, bolt or nut, pump shaft is installed a set of single mechanical end face seal.
5. 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.
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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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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN104100534A CN104100534A (en) | 2014-10-15 |
| CN104100534B true CN104100534B (en) | 2016-04-20 |
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Families Citing this family (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 |
| CN107514367B (en) * | 2017-09-30 | 2019-03-29 | 浙江固达泵业有限公司 | A kind of 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 |
| CN113982960A (en) * | 2021-11-25 | 2022-01-28 | 江苏徐工工程机械研究院有限公司 | Submersible pump and drainage emergency vehicle |
| CN114810611B (en) * | 2022-04-01 | 2022-12-20 | 南京科技职业学院 | Improve mechanical seal operational environment's immersible 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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| 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 |
| 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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2014
- 2014-07-07 CN CN201410318134.8A patent/CN104100534B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202273896U (en) * | 2011-09-05 | 2012-06-13 | 上海潜水泵有限公司 | Cutting device for small submersible pump |
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| CN104100534A (en) | 2014-10-15 |
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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 |