CN107542703A - A kind of novel sewage pump anti-clogging inlet channel - Google Patents
A kind of novel sewage pump anti-clogging inlet channel Download PDFInfo
- Publication number
- CN107542703A CN107542703A CN201710976914.5A CN201710976914A CN107542703A CN 107542703 A CN107542703 A CN 107542703A CN 201710976914 A CN201710976914 A CN 201710976914A CN 107542703 A CN107542703 A CN 107542703A
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- China
- Prior art keywords
- inlet channel
- sewage pump
- cutter head
- clogging
- dirty
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- 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.)
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- 239000010865 sewage Substances 0.000 title claims abstract description 47
- 238000005520 cutting process Methods 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of novel sewage pump anti-clogging inlet channel, submersible sewage pump sets fuisw rib that water inlet bend pipe is divided into two runners up and down under heavy traffic condition, the stable Inlet flow pattern of energy, lift the performance of submersible sewage pump, the present invention provides a kind of novel sewage pump anti-clogging pipeline simultaneously, set below the anti-clogging inlet channel and draw dirty pipeline, inner-walls of duct, which is set, leads dirty cone and tangles and guide dirt, lead dirty cone cone and be downwardly into and draw in dirty pipeline, draw dirty pipeline and pass to cutting chamber, cutting chamber is provided with motor, dynamic cutter head, quiet cutter head and axle, motor shaft coupling drives dynamic cutter head to rotate and cut, and continue to pass in inlet channel bent tube section lower flow channel;The present invention greatly enhances the submersible sewage pump water inlet effect under big flow and correspondingly solves blockage problem.
Description
Technical field
Patent of the present invention is related to submersible sewage pump technical field, particularly a kind of novel sewage pump anti-clogging inlet channel.
Background technology
In the industrial production, compact-sized, the few cavitation damage problem of submersible sewage pump, vibration noise are small, and the advantage such as pollution-free is bright
Aobvious, application is increasing, by it is original be merely used for conveying clear water till now can convey various sanitary sewages, work
Industry waste water, construction site draining, liquid feed etc., acted in all trades and professions obvious.
But submersible sewage pump is when conveying sewage, be usually present in sewage various such as cotton yarns, the rope made of hemp, shred fiber and
Plastic products, these impurity easily cause sewage discharge to have some setbacks once blocking water inlet, serious even to influence submersible sewage pump just
Often work, causes the damage of motor, reduces the operating efficiency and service life of submersible sewage pump.
In order to prevent fiber from being blocked when submersible sewage pump works, the structure of submersible sewage pump is improved, in entering for submersible sewage pump
Install anti-blocking or cutter device at the mouth of a river additional, can effectively prevent the impurity in sewage from blocking to influence work.It is special with the present invention through retrieval
Sharp related patent has:Dredge pump protector (publication number:CN203822606 dictyosome disclosed in) is welded on grid chassis,
Dictyosome periphery is surrounded by steel wire grid, and front sets pump outlet, top dress canvas shroud, and canvas shroud is provided with movable mouth water inlet knot
Structure, the invention economical environment-protective, safely and effectively, but function is simple;Cutter device (the publication number of submersible sewage pump:CN204402963U it is) public
Having opened a kind of cutter device includes cutting tool rest and cutting cutter hub, cuts and sets cutting groove, cutter on the cut surface of tool rest inner ring
The cylindrical of body is provided with cutting edge, and cutting edge coordinates with cut surface small―gap suture to be cut, and the inventive structure is compact, but is flowing greatly
It is ineffective under amount;Water inlet structure (the publication number of submersible sewage pump:CN204646810U water inlet structure disclosed in) includes carrying
The inside and outside screen pack of filter opening, the accommodating chamber for accommodating impurity is formed between inside and outside screen pack, it is latent effectively to prevent that debris from entering
In water pump, and cleared up, it is undesirable for effect under the impact of big flow;Band stirs evenly the submersible sewage pump (publication number of cutter device:
CN204532843U pump shaft disclosed in) stirs evenly and cutting blade is welded with impeller, cutting blade is stirring evenly leaf equipped with impeller is stirred evenly
It is uniform on wheel, it is simple in construction, can effectively solve the winding clogging of pump.
The present invention more preferable stabilization of fluidized and can reach anti-clogging effect under big flow.
The content of the invention
In order to improve submersible sewage pump anti-clogging problem, patent of the present invention provides a kind of novel sewage pump anti-clogging inlet channel,
Purpose is the blockage problem for preferably solving big flow submersible sewage pump.
The purpose of the present invention is achieved through the following technical solutions:
The present invention provides a kind of novel sewage pump anti-clogging inlet channel, the external inlet channel of dredge pump, the row
Dirty Pump Suction Nozzle taps into waterpipe, and inlet channel sets fuisw rib along bent tube section runner streamline, and fuisw rib is located at by casting
On inner-walls of duct, inlet channel bend pipe is divided into two runners up and down, the inlet channel straight-tube portion lower section by fuisw rib
Perforate simultaneously connects and draws dirty pipeline, and the inlet channel straight-tube portion inwall sets the fiber dirt led in dirty cone water conservancy diversion sewage, leads dirty cone
Cone, which is downwardly into, draws in dirty pipeline, and passes to cutting chamber, and the cutting chamber is provided with motor, dynamic cutter head, quiet cutter head and axle, motor
It is fixed on by floor in cutting chamber, and drive shaft linkage dynamic cutter head rotation, dynamic cutter head, quiet cutter head coordinate cutter to make to fiber
Dirt carries out cutting and grinding, is then communicated under inlet channel bent tube section in runner.
It is further preferred that the dirty cone nut line and the optional scope of center line angulation of leading is 5 °~10 °;
It is further preferred that the dirt cone of leading is obliquely installed and deviates water inlet direction, center line and anti-clogging water inlet pipe
Road inwall bus angulation is 73 °~77 °;
It is further preferred that it is described lead dirty cone and stretch into draw in dirty pipeline, and lead dirty cone tip position and exceed and draw dirty pipeline one
Half depth location;
Draw dirty conduit entrance it is further preferred that described and have separated sewage board away from inlet channel side;
It is further preferred that the dynamic cutter head is radial through the stuck fixation of moving knife seat with center regular hexagon, it is described dynamic
Tool rest is connected through a screw thread with bolt head and with axle, and spring shim is added among connection;
It is further preferred that the dynamic cutter head kills fixation axially through front side moving knife cover plate, the moving knife cover plate is with moving
Cutter head is bolted;
It is further preferred that dynamic cutter head has the cutting blade that quantity is more than or equal to three, and the moving knife in the cutting chamber
Piece is symmetrical by axis center;
It is further preferred that the cutting blade is arc, arc concave shape side is cutting edge;
It is further preferred that the quiet cutter head is made up of front and rear double-layer rigid wire netting;
Patent advantage of the present invention is:Fuisw rib is set to stablize big flow water inlet at the streamline of submersible sewage pump water inlet bend pipe center
Fluidised form, and novel sewage pump anti-clogging inlet channel can be relied on, fiber etc. is wound into dirt before blowdown pump water inlet bend pipe
Carrying-off simultaneously carries out cutting process, so as to reach unimpeded effect.
Brief description of the drawings
Fig. 1 is a kind of novel sewage pump anti-clogging inlet channel overall schematic.
Fig. 2 is cutting chamber enlarged schematic partial view.
Fig. 3 is anti-clogging inlet channel inlet side front view.
Fig. 4 is the dynamic and static cutter head cooperation schematic diagram of cutting chamber.
In figure, dredge pump (1), anti-clogging inlet channel (2), fuisw rib (3), dirty cone (4), motor (5), dynamic cutter head are led
(6), moving knife cover plate (61), moving knife seat (62), spring shim (63), quiet cutter head (7), axle (8), draw dirty pipeline (9).
Embodiment
The present invention is illustrated below according to accompanying drawing:
1st, as depicted in figs. 1 and 2, the present invention provides a kind of novel sewage pump anti-clogging inlet channel, outside the dredge pump 1
Waterpipe 2 is tapped into, inlet channel 2 sets fuisw rib 3 along bent tube section runner streamline, and the directly casting of fuisw rib 3, which forms, is located at pipeline
On inwall, the bend pipe of inlet channel 2 is divided into two runners up and down, below the straight-tube portion of inlet channel 2 perforate and connecing draw
Dirty pipeline 9, the straight-tube portion inwall of inlet channel 2 set the fiber dirt led in 4 water conservancy diversion sewage of dirty cone, lead 5 cones of dirty cone to
It is lower enter draw in dirty pipeline 9, it is described lead dirty cone 4 and stretch into draw in dirty pipeline 9, and lead 4 tip positions of dirty cone and exceed and draw dirty pipeline 9 one
Half depth location, the dirty import of pipeline 9 have separated sewage board away from the side of inlet channel 2;And cutting chamber is passed to, the cutting chamber is provided with electricity
Machine 5, dynamic cutter head 6, quiet cutter head 7 and axle 8, motor 5 are fixed in cutting chamber by floor, the drive shaft 8 of motor 5 linkage dynamic cutter head 6
Rotation, dynamic cutter head 6, the cooperating of quiet cutter head 7 carry out cutting and grinding to fiber dirt, are then communicated to the bent tube section of inlet channel 2
In lower flow channel.
As shown in figure 3, it is 3 °~10 ° to lead 4 buses of dirty cone with the optional scope of center line angulation, it is preferable that institute's angulation
Spend for 5 ° when best results;Lead dirty cone 4 to be obliquely installed and deviate water inlet direction, center line and the inwall of anti-clogging inlet channel 2
Bus angulation is 73 °~77 °, it is preferable that best results when angulation is 75 °;Dirty cone 4 is led to draw at dirty conduit entrance
Tip position exceed the outer wall of anti-clogging inlet channel 2 it is outside.
As shown in Figures 3 and 4, cutting chamber dynamic cutter head 6 radial through with the 61 stuck fixation of center moving knife seat, the moving knife seat 61
It is connected through a screw thread with bolt head and with axle, spring shim 63 is added among connection;The dynamic cutter head 8 of cutting chamber 7 is axially through front side
Moving knife cover plate 62 kills fixation, and the moving knife cover plate 62 is bolted with dynamic cutter head 8;The dynamic cutter head 8 of cutting chamber 7 has quantity big
In the cutting blade equal to 3, and the cutting blade presses the distribution of the Central Symmetry of axle 10, cutting effect when preferably knife number is four
Fruit is optimal;The cutting blade of the dynamic cutter head 8 of cutting chamber 7 is cambered blade, and blade cutting edge is the interior concave edge of cambered blade;Cutting chamber
Quiet cutter head 7 is made up of front and rear double-layer rigid wire netting.
It is understood that the restriction of system architecture shown in figure not structure paired systems, can be included than illustrating more
More or less equipment, either combine some equipment or different deployed with devices.
The invention is not restricted to above-described embodiment, also comprising other embodiments in the range of present inventive concept and variation.
Claims (10)
- A kind of 1. novel sewage pump anti-clogging inlet channel, it is characterised in that:Dredge pump (1) suction inlet taps into waterpipe (2), inlet channel (2) sets fuisw rib (3) along bent tube section runner streamline, and fuisw rib (3) is located at inner-walls of duct by casting On, inlet channel (2) bend pipe is divided into two runners up and down, inlet channel (2) the straight-tube portion lower section by fuisw rib (3) Perforate simultaneously connects and draws dirty pipeline (9), and it is dirty that inlet channel (2) the straight-tube portion inwall sets the fiber led in dirty cone (4) water conservancy diversion sewage Thing, lead dirty cone (5) cone and be downwardly into and draw in dirty pipeline (9), and pass to cutting chamber, the cutting chamber is provided with motor (5), moving knife Head (6), quiet cutter head (7) and axle (8), motor (5) are fixed in cutting chamber by floor, and drive shaft (8) linkage dynamic cutter head (6) Rotation, dynamic cutter head (6), quiet cutter head (7) coordinate cutter to make to carry out cutting and grinding to fiber dirt, are then communicated to inlet channel (2) under bent tube section in runner.
- A kind of 2. novel sewage pump anti-clogging inlet channel described in claim 1, it is characterised in that:It is described to lead dirty cone (4) mother Line is 5 °~10 ° with the optional scope of center line angulation.
- A kind of 3. novel sewage pump anti-clogging inlet channel described in claim 1, it is characterised in that:The dirt cone (4) of leading inclines Tiltedly set and deviate water inlet direction, center line is 70 °~80 ° with anti-clogging inlet channel (2) inwall bus angulation.
- A kind of 4. novel sewage pump anti-clogging inlet channel described in claim 1, it is characterised in that:The dirt cone (4) of leading is stretched Enter to draw in dirty pipeline (9), and lead dirty cone (4) tip position and exceed and draw dirty pipeline (9) half depth location.
- A kind of 5. novel sewage pump anti-clogging inlet channel described in claim 1, it is characterised in that:It is described to draw dirty pipeline (9) Import has separated sewage board away from inlet channel (2) side.
- A kind of 6. novel sewage pump anti-clogging inlet channel described in claim 1, it is characterised in that:Dynamic cutter head (5) footpath To by moving knife seat (61) stuck fixation with center regular hexagon, the moving knife seat (61) is with bolt head and logical with axle (8) Threaded connection is crossed, adds spring shim (63) among connection.
- A kind of 7. novel sewage pump anti-clogging inlet channel described in claim 1, it is characterised in that:Dynamic cutter head (8) axle Fixation is killed to by front side moving knife cover plate (62), the moving knife cover plate (62) is bolted with dynamic cutter head (8).
- A kind of 8. novel sewage pump anti-clogging inlet channel described in claim 1, it is characterised in that:Moving knife in the cutting chamber Head (8) has the cutting blade that quantity is more than or equal to 3, and the cutting blade presses the distribution of axle (10) Central Symmetry.
- A kind of 9. novel sewage pump anti-clogging inlet channel described in claim 1, it is characterised in that:The dynamic cutter head (8) is dynamic Blade is arc, and arc concave shape side is cutting edge.
- A kind of 10. novel sewage pump anti-clogging inlet channel described in claim 1, it is characterised in that:The quiet cutter head (9) by Front and rear double-layer rigid wire netting is formed.
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CN201710976914.5A CN107542703A (en) | 2017-10-19 | 2017-10-19 | A kind of novel sewage pump anti-clogging inlet channel |
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CN201710976914.5A CN107542703A (en) | 2017-10-19 | 2017-10-19 | A kind of novel sewage pump anti-clogging inlet channel |
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CN107542703A true CN107542703A (en) | 2018-01-05 |
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CN201710976914.5A Pending CN107542703A (en) | 2017-10-19 | 2017-10-19 | A kind of novel sewage pump anti-clogging inlet channel |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107975479A (en) * | 2017-12-04 | 2018-05-01 | 江苏凯泉泵业制造有限公司 | Dredge pump with cutting is without stifled water inlet pipe |
CN108533502A (en) * | 2018-06-07 | 2018-09-14 | 佛山市肯富来工业泵有限公司 | Dredge pump with cutting is without stifled water inlet bend pipe |
CN108626136A (en) * | 2018-06-07 | 2018-10-09 | 佛山市肯富来工业泵有限公司 | Blowdown pump water inlet swan neck system |
CN110541997A (en) * | 2019-09-09 | 2019-12-06 | 贵州枫叶管业有限公司 | external anti-blocking sedimentation pipeline for water supply pipe |
CN114704471A (en) * | 2022-04-25 | 2022-07-05 | 江苏创进泵阀制造有限公司 | Heating constant-temperature anti-blocking crushing function integrated intelligent self-priming pump station and installation method thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN204212991U (en) * | 2014-11-03 | 2015-03-18 | 嵊州市东歌机械设备有限公司 | A kind of sump oil promotes special rotor pump |
CN204283909U (en) * | 2014-10-16 | 2015-04-22 | 江苏大学 | A kind of double shrouded wheel Non-blinding pump with cutting function |
CN106762706A (en) * | 2017-03-08 | 2017-05-31 | 佛山市肯富来工业泵有限公司 | Anti-clogging submersible sewage pump |
CN206234126U (en) * | 2016-11-17 | 2017-06-09 | 江苏国泉泵业制造有限公司 | A kind of band grinds the dual channel dredge pump of cutterhead |
CN106907327A (en) * | 2017-04-26 | 2017-06-30 | 佛山市肯富来工业泵有限公司 | The method that the dredge pump anti-block system and control unit of pumping plant control cutting part |
CN207687053U (en) * | 2017-10-19 | 2018-08-03 | 江苏国泉泵业制造有限公司 | A kind of novel sewage pump anti-clogging water inlet line |
-
2017
- 2017-10-19 CN CN201710976914.5A patent/CN107542703A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN204283909U (en) * | 2014-10-16 | 2015-04-22 | 江苏大学 | A kind of double shrouded wheel Non-blinding pump with cutting function |
CN204212991U (en) * | 2014-11-03 | 2015-03-18 | 嵊州市东歌机械设备有限公司 | A kind of sump oil promotes special rotor pump |
CN206234126U (en) * | 2016-11-17 | 2017-06-09 | 江苏国泉泵业制造有限公司 | A kind of band grinds the dual channel dredge pump of cutterhead |
CN106762706A (en) * | 2017-03-08 | 2017-05-31 | 佛山市肯富来工业泵有限公司 | Anti-clogging submersible sewage pump |
CN106907327A (en) * | 2017-04-26 | 2017-06-30 | 佛山市肯富来工业泵有限公司 | The method that the dredge pump anti-block system and control unit of pumping plant control cutting part |
CN207687053U (en) * | 2017-10-19 | 2018-08-03 | 江苏国泉泵业制造有限公司 | A kind of novel sewage pump anti-clogging water inlet line |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107975479A (en) * | 2017-12-04 | 2018-05-01 | 江苏凯泉泵业制造有限公司 | Dredge pump with cutting is without stifled water inlet pipe |
CN108533502A (en) * | 2018-06-07 | 2018-09-14 | 佛山市肯富来工业泵有限公司 | Dredge pump with cutting is without stifled water inlet bend pipe |
CN108626136A (en) * | 2018-06-07 | 2018-10-09 | 佛山市肯富来工业泵有限公司 | Blowdown pump water inlet swan neck system |
CN110541997A (en) * | 2019-09-09 | 2019-12-06 | 贵州枫叶管业有限公司 | external anti-blocking sedimentation pipeline for water supply pipe |
CN110541997B (en) * | 2019-09-09 | 2024-06-04 | 贵州枫叶管业有限公司 | External anti-blocking sedimentation pipeline of water supply pipe |
CN114704471A (en) * | 2022-04-25 | 2022-07-05 | 江苏创进泵阀制造有限公司 | Heating constant-temperature anti-blocking crushing function integrated intelligent self-priming pump station and installation method thereof |
CN114704471B (en) * | 2022-04-25 | 2024-05-07 | 江苏创进泵阀制造有限公司 | Heating constant-temperature anti-blocking crushing function integrated intelligent self-priming pump station and mounting method thereof |
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