CN103711700A - Injection type self-absorption crushing centrifugal pump - Google Patents
Injection type self-absorption crushing centrifugal pump Download PDFInfo
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- CN103711700A CN103711700A CN201310725236.7A CN201310725236A CN103711700A CN 103711700 A CN103711700 A CN 103711700A CN 201310725236 A CN201310725236 A CN 201310725236A CN 103711700 A CN103711700 A CN 103711700A
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- impeller
- diffuser
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- centrifugal pump
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Abstract
The invention discloses an injection type self-absorption crushing centrifugal pump which comprises a pump body, a nozzle, a diffuser, a cutterhead, a guide vane, an impeller, a pump cover, a pump shaft, a pump frame and a motor. The pump body is coaxially connected with the motor through the pump frame. One end of the pump shaft is connected with the motor in a sleeved mode, the other end of the pump shaft is provided with the impeller, and the impeller and the guide vane are matched to form a centrifugal pump structure. According to the injection type self-absorption crushing centrifugal pump, the shaft end of the pump shaft on an inlet of the impeller is connected with the cutterhead, and the cutterhead rotates along with the pump shaft to form a crushing structure of a suction inlet of the centrifugal pump. A gas-liquid mixing chamber is arranged at the lower end of the pump body, the suction inlet of the pump is arranged outside the gas-liquid mixing chamber, and a built-in inlet and a built-in outlet are formed inside the gas-liquid mixing chamber. The nozzle is mounted in the built-in inlet, the diffuser is mounted in the built-in outlet, the other end of the diffuser is connected with the downward end face of the guide vane, and the nozzle directly faces a diffuser pipe to constitute an injection pump structure. The injection type self-absorption crushing centrifugal pump is formed by an injection pump, the crushing structure and a centrifugal pump body in a combined mode, and is simple in structure, reliable in connection, complementary in function, capable of integrating self-absorption and crushing of the centrifugal pump, more importantly, reliable to use, and capable of solving the congestion problem.
Description
Technical field
The present invention relates to a kind of water pump, specifically, the present invention relates to a kind of jet-type self-priming crushing centrifuge pump being combined by jet pump, reducing mechanism and centrifugal pump.
Background technique
By national environmental protection policy requirements, the domestic sewage that boats and ships produce must be made relevant treatment, particularly pulverizing treatment before discharge.The domestic sewage that boats and ships produce under normal circumstances accumulates in the bilge, and sewage disposal device is higher than the bilge, has larger water-head between the two.In addition, because containing particle and fibrous structure in domestic sewage, the not competent Sewage from Ships of Ordinary Centrifugal Pumps is carried task, needs to select the centrifugal pump that not only possesses self-absorption function but also can do to pulverize could meet usage requirement.In engineering, conventionally adopt two kinds of method practical function combinations, first method is to install self-priming apparatus additional at the macerator pump feed-water end that does not possess suction capacity; Second method is directly to select the macerator pump that possesses self-absorption function.Above-mentioned two kinds of methods all can realize from bilge suction domestic sewage, but reliability is poor, and user cost is large.For example, the domestic sewage that first method drinks up because of macerator pump feed-water end is without pulverizing treatment, once particulate matter or fibrous structure are excessive, easily there is blockage problem in rearmounted self-priming apparatus, and adding the self-priming apparatus of separately joining need to increase certain cost of equipment and energy consumption.Although second method does not exist the deficiency of first method, the suction lift of conventional self-priming apparatus is no more than 7 meters, strengthens self-priming time along with the increase of suction lift.The Self-absorption smashing pump of prior art is in order to increase suction capacity, and the impeller of joining is closed type structure, and the Flow area of double shrouded wheel is limited, has equally blockage problem.Another problem is that this pump is furnished with a gas-liquid separation chamber that volume is relatively large, causes water pump volume very large, and the pump of selecting by second method thus is also not suitable for marine equipment.
Summary of the invention
The present invention is mainly for the deficiencies in the prior art, proposes a kind of simple in structure, easy to manufacture, easy to use, jet-type self-priming crushing centrifuge pump that suction capacity is strong, reliable.
The present invention is achieved through the following technical solutions technical goal.
Jet-type self-priming crushing centrifuge pump, it comprises the pump housing, nozzle, Diffuser, cutterhead, stator, impeller, pump cover, pump shaft, pump bracket and motor.The described pump housing coaxially connects motor by pump bracket.The output shaft of described pump shaft larger diameter end socket motor, the impeller that smaller diameter end is installed coordinates formation centrifugal pump structure with stator.Its improvements are: the pump shaft axle head that is positioned at impeller eye place connects cutterhead, and cutterhead forms the pulverizing structure of centrifugal pump suction port with pump shaft rotation; Described pump housing lower end is provided with gas-liquid mixed chamber, and bottom, gas-liquid mixed chamber one side is provided with Pump Suction Nozzle down, and inside is provided with interior posting port and the built-in outlet of coaxially and respectively linking up gas-liquid mixed chamber with pump shaft, and nozzle is upward installed in interior posting port.Described Diffuser is the straight-through pipe fitting that is provided with internal taper hole structure, and smaller diameter end location and installation is in built-in outlet, and larger diameter end is upward connected with stator end face seal down, and in this structure, diffuser pipe forms the intake line of centrifugal pump.Described nozzle forms jet pump structure over against diffuser intake end.
In said structure, impeller is open architecture, and impeller does not have cover plate.
The present invention compared with prior art, has following good effect:
1, the composite structure of jet pump, pulverizing structure and centrifugal pump is simple, connects reliably, has complementary functions, and realizes centrifugal pump self-priming and pulverizes integrated;
2, the medium through diffuser exit input directly enters centrifugal pump inlet, and this structure is except improving centrifugal pump suction capacity, and significantly reduces self-priming time, and the time of realizing self-priming is only half left and right of prior art;
3, because of the import of centrifugal pump, by Diffuser and nozzle, work in coordination with power-assisted, suction capacity significantly strengthens, therefore the impeller of centrifugal pump configuration does not need closed type structure, and adopts the strong open architecture of particle-resistant thing ability, open architecture impeller can avoid occurring runner blockage problem.
Accompanying drawing explanation
Fig. 1 is structural profile schematic diagram of the present invention.
Embodiment
Below according to the invention will be further described.
Jet-type self-priming crushing centrifuge pump shown in Fig. 1, it comprises the pump housing 1, nozzle 2, Diffuser 3, cutterhead 4, stator 5, impeller 6, pump cover 7, pump shaft 8, pump bracket 9 and motor 10.The described pump housing 1 is by the coaxial motor 10 that connects of pump bracket 9.The output shaft of described pump shaft 8 larger diameter end socket motors 10, the impeller 6 that smaller diameter end is installed open architecture coordinates formation centrifugal pump structure with stator 5.The present invention connects cutterhead 4 at pump shaft 8 axle heads of impeller 6 ingress, and cutterhead 4 forms the pulverizing structure of centrifugal pump suction port with pump shaft 8 rotations.The described pump housing 1 lower end is provided with gas-liquid mixed chamber 1.1, gas-liquid mixed chamber 1.1 bottom one sides are provided with Pump Suction Nozzle 1.2 down, inside is provided with interior posting port 1.3 and the built-in outlet 1.4 of coaxially and respectively linking up gas-liquid mixed chamber 1.1 with pump shaft 8, and nozzle 2 is upward installed in interior posting port 1.3.Described Diffuser 3 is for being provided with the straight-through pipe fitting of internal taper hole structure, and smaller diameter end location and installation is in built-in outlet 1.4, and larger diameter end is upward connected with stator 5 end face seal down, and in this structure, diffuser pipe 3 forms the intake line of centrifugal pump.Described nozzle 2 forms jet pump structure over against diffuser intake end.
The present embodiment jet-type self-priming crushing centrifuge pump is placed in the cabin of 100,000 tons of passenger steamers, for the domestic sewage that the bilge is accumulated, pumps to sewage-treatment plant.Startup is gone in the pump housing 1 and is poured into enough liquid, and after startup, under impeller 6 effects of High Rotation Speed, the built-in liquid of the pump housing 1 produces certain pressure.The liquid with certain pressure sprays to Diffuser 3 through nozzle 2, and the pressure energy of liquid is transformed into kinetic energy, forms high-speed jet.In the pump housing 1 inner chamber, residual gas is forced to carry with it by high-speed jet and is mixed, forming gas-liquid mixed stream again circulates and enters Diffuser 3, thereby make gas-liquid mixed chamber 1.1 pressure decreaseds of the pump housing 1, until formation negative pressure, the domestic sewage sucking is in gas-liquid mixed chamber 1.1 enters Diffuser 3, after mixing with high-speed jet, Speed Reduction and pressure raise, wherein residual gas be further compressed after gas-liquid separation in the pump housing 1 inner chamber.The liquid major part of centrifugal pump output is from outlet 1.5 outputs of the pump housing 1, and few portion liquid sprays facing to the import of Diffuser 3 pumping action forming gas-liquid mixed chamber 1.1 through nozzle 2, and the circulation through a period of time just can realize self-priming.Because the present invention is provided with the cutterhead 4 with pump shaft 8 High Rotation Speeds at impeller inlet place, if the domestic sewage sucking has material thing and a fibrous structure, just before impeller 6 imports, pulverized, adding joined impeller 6 is open architecture, therefore can there is not blockage problem in using in the present invention, guarantee normal operation.
Claims (2)
1. a jet-type self-priming crushing centrifuge pump, it comprises the pump housing (1), nozzle (2), Diffuser (3), cutterhead (4), stator (5), impeller (6), pump cover (7), pump shaft (8), pump bracket (9) and motor (10); The described pump housing (1) coaxially connects motor (10) by pump bracket (9); The output shaft of described pump shaft (8) larger diameter end socket motor (10), the impeller (6) that smaller diameter end is installed coordinates formation centrifugal pump structure with stator (5); It is characterized in that: pump shaft (8) axle head that is positioned at impeller (6) ingress connects cutterhead (4), cutterhead (4) forms the pulverizing structure of centrifugal pump suction port with pump shaft (8) rotation; The described pump housing (1) lower end is provided with gas-liquid mixed chamber (1.1), bottom, gas-liquid mixed chamber (1.1) one side is provided with Pump Suction Nozzle (1.2) down, inside is provided with interior posting port (1.3) and the built-in outlet (1.4) of coaxially and respectively linking up gas-liquid mixed chamber (1.1) with pump shaft (8), and nozzle (2) is upward installed in interior posting port (1.3); Described Diffuser (3) is for being provided with the straight-through pipe fitting of internal taper hole structure, smaller diameter end location and installation is in built-in outlet (1.4), larger diameter end is upward connected with stator (5) end face seal down, and diffuser pipe in this structure (3) forms the intake line of centrifugal pump; Described nozzle (2) forms jet pump structure over against diffuser pipe (3) entrance point.
2. jet-type self-priming crushing centrifuge pump according to claim 1, is characterized in that: described impeller (6) is open architecture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725236.7A CN103711700A (en) | 2013-12-25 | 2013-12-25 | Injection type self-absorption crushing centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725236.7A CN103711700A (en) | 2013-12-25 | 2013-12-25 | Injection type self-absorption crushing centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103711700A true CN103711700A (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310725236.7A Pending CN103711700A (en) | 2013-12-25 | 2013-12-25 | Injection type self-absorption crushing centrifugal pump |
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| Country | Link |
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| CN (1) | CN103711700A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351848A (en) * | 2016-10-21 | 2017-01-25 | 杭州激湍流体科技有限公司 | Low-noise injection pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080088225A1 (en) * | 1998-06-03 | 2008-04-17 | The Regents Of The University Of California | Electronic displays using optically pumped luminescent semiconductor nanocrystals |
| CN202348688U (en) * | 2011-10-13 | 2012-07-25 | 江苏万丰船用设备制造有限公司 | Jet type self-priming centrifugal pump |
| CN202926693U (en) * | 2013-01-07 | 2013-05-08 | 成都默一科技有限公司 | Cutting type self-absorption blockage-free sewage pump |
| CN203655644U (en) * | 2013-12-25 | 2014-06-18 | 江苏振华泵业制造有限公司 | Injection type self-absorption smashing centrifugal pump |
-
2013
- 2013-12-25 CN CN201310725236.7A patent/CN103711700A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080088225A1 (en) * | 1998-06-03 | 2008-04-17 | The Regents Of The University Of California | Electronic displays using optically pumped luminescent semiconductor nanocrystals |
| CN202348688U (en) * | 2011-10-13 | 2012-07-25 | 江苏万丰船用设备制造有限公司 | Jet type self-priming centrifugal pump |
| CN202926693U (en) * | 2013-01-07 | 2013-05-08 | 成都默一科技有限公司 | Cutting type self-absorption blockage-free sewage pump |
| CN203655644U (en) * | 2013-12-25 | 2014-06-18 | 江苏振华泵业制造有限公司 | Injection type self-absorption smashing centrifugal pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351848A (en) * | 2016-10-21 | 2017-01-25 | 杭州激湍流体科技有限公司 | Low-noise injection pump |
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Application publication date: 20140409 |