CN211259025U - Triple-sealing multistage centrifugal pump - Google Patents
Triple-sealing multistage centrifugal pump Download PDFInfo
- Publication number
- CN211259025U CN211259025U CN201922359210.0U CN201922359210U CN211259025U CN 211259025 U CN211259025 U CN 211259025U CN 201922359210 U CN201922359210 U CN 201922359210U CN 211259025 U CN211259025 U CN 211259025U
- Authority
- CN
- China
- Prior art keywords
- pump
- impeller
- guide vanes
- valve body
- guide vane
- 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.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to the technical field of centrifugal pumps, in particular to a triple-seal multistage centrifugal pump, a pump shaft is arranged in the pump shell, a first-stage pump body, a second-stage pump body, a third-stage pump body and a fourth-stage pump body are sequentially sleeved outside the pump shaft from bottom to top, the primary pump body comprises a rubber opening ring, an impeller and a guide vane, the impeller is positioned above the rubber opening ring, the guide vane is positioned above the impeller, the outer side wall of the pump shaft is provided with a limit bulge, the inner side of the impeller is provided with a limit groove matched with the limit bulge, the impeller is provided with impeller blades, an impeller channel is formed between the impeller blades, the guide vane comprises an upper guide vane and a lower guide vane, the upper guide vane is positioned at the upper part of the guide vane, the lower guide vane is positioned at the lower part of the guide vane, and the rotating direction of the lower guide vane is opposite to that of the upper guide vane.
Description
Technical Field
The utility model belongs to the technical field of the centrifugal pump, especially, relate to a triple seal multistage centrifugal pump.
Background
The centrifugal pump has various forms such as vertical type, horizontal type, single stage, multistage, single suction, double suction, self suction and the like. Centrifugal pumps operate by causing water to move centrifugally as a result of the rotation of an impeller. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller to be thrown into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell.
At present, in the multi-stage centrifugal pump which is practically applied, in order to prolong the service life, internal parts are made of rigid materials, and although the probability of abrasion is reduced, the sealing performance is poor.
Disclosure of Invention
The utility model provides a triple seal multistage centrifugal pump to solve the relatively poor problem of leakproofness that proposes in the above-mentioned background art.
The utility model provides a technical problem adopt following technical scheme to realize:
a triple-seal multistage centrifugal pump comprises a water inlet section, a middle section and a water discharge section, wherein the water inlet section is positioned at the bottom of the centrifugal pump, the water discharge section is positioned at the top of an off-line pump, and the middle section is positioned between the water inlet section and the water discharge section;
the water inlet section comprises a pump shell, a bottom cover is arranged below the pump shell, the pump shell and the bottom cover are fixedly connected through a lower fixing bolt, a water inlet is formed in the bottom end of the bottom cover, a valve body and a mouth ring are arranged in the bottom cover, the mouth ring is positioned below the valve body, a mouth ring through groove is formed in the mouth ring, a valve body cavity is formed in the valve body, a valve body through groove is formed in the top of the valve body, a water inlet cavity is formed in the upper portion of the valve body, and the mouth ring through groove, the valve body cavity, the valve body;
the pump comprises a pump shell, a pump shaft is arranged in the pump shell, a first-stage pump body, a second-stage pump body, a third-stage pump body and a fourth-stage pump body are sequentially sleeved outside the pump shaft from bottom to top, the first-stage pump body comprises a rubber opening ring, an impeller and guide vanes, the impeller is positioned above the rubber opening ring, the guide vanes are positioned above the impeller, the outer side wall of the pump shaft is provided with limiting bulges, the inner side of the impeller is provided with limiting grooves matched with the limiting bulges, the impeller is provided with impeller blades, an impeller channel is formed between the impeller blades, the guide vanes comprise upper guide vanes and lower guide vanes, the upper guide vanes are positioned on the upper portions of the guide vanes, the lower guide vanes are positioned on the lower portions of the guide vanes, the rotating direction of the lower guide vanes is opposite to that of the upper guide vanes, the upper guide channels are formed between the upper, a shaft sleeve is arranged between the flow guide vane and the pump shaft, a rubber bearing is arranged between the flow guide vane and the shaft sleeve, a positioning bulge is arranged on the inner side of the flow guide vane, a positioning groove is arranged on the outer side of the rubber bearing, the positioning bulge is positioned in the positioning groove, and the structures of the secondary pump body, the tertiary pump body and the quaternary pump body are the same as those of the primary pump body;
the pump shaft penetrates through the middle section, a lower bearing seat is sleeved at the bottom end of the pump shaft, a water inlet gland is arranged below the lower bearing seat, the water inlet gland is fixedly connected with the lower bearing seat through a middle fixing bolt, a lower rubber seal, a mechanical seal and a rolling bearing are arranged between the pump shaft and the lower bearing seat, the mechanical seal is positioned above the rolling bearing, the lower rubber seal is positioned above the mechanical seal, a rotor is sleeved outside the middle part of the pump shaft, a stator is sleeved outside the rotor, an upper bearing seat is sleeved at the top of the pump shaft, and an upper rubber seal is arranged between the pump shaft and the upper bearing seat;
the improved pump is characterized in that a thrust combination device is arranged in the drainage section and installed at the top of the pump shaft, an upper cover is arranged above the thrust combination device and connected with a thrust bearing seat through an upper fixing bolt, a pressure regulating film is arranged in the upper cover, a gland is arranged above the pressure regulating film and fixed on the upper cover through screws, a top cover is arranged at the top of the drainage section, a water outlet is formed in the top of the top cover, a cable is connected to the top of the stator, and the cable penetrates through the top cover.
The upper fixing bolt, the middle fixing bolt and the lower fixing bolt are all hexagon socket head cap bolts.
The utility model has the advantages that:
this technical scheme is through setting up traditional choma into the rubber material, can be when guaranteeing the wearability, guarantee good sealed effect, this case has still increased the axle sleeve in addition, rubber seal, the triple seal structure of mechanical seal, the effectual holistic sealed effect of centrifugal pump that has improved, the water conservancy diversion leaf of present case is equipped with tow sides, be provided with a plurality of guide vane on the water conservancy diversion leaf openly, be provided with a plurality of guide vane that revolve to opposite on the water conservancy diversion leaf reverse side, can realize better water conservancy diversion effect, this structural design is reasonable, material saving, the impeller adopts the plastic steel material, good rigidity, strong elasticity, corrosion-resistant, the ageing resistance, light in weight, the effectual holistic weight that alleviates.
Drawings
FIG. 1 is a schematic structural view of the water inlet section of the present invention;
FIG. 2 is a schematic structural view of the middle section of the present invention;
FIG. 3 is a schematic structural view of the drainage section of the present invention;
fig. 4 is a schematic cross-sectional view of the impeller of the present invention;
fig. 5 is a schematic structural view of the impeller of the present invention;
FIG. 6 is a schematic cross-sectional view of the flow guide vane of the present invention;
fig. 7 is a schematic front structural view of the flow guide vane of the present invention;
fig. 8 is a schematic view of the reverse structure of the guide vane of the present invention;
FIG. 9 is a schematic view of the overall structure of the present invention;
in the figure: 1-pump housing, 2-bottom cover, 3-lower fixing bolt, 4-water inlet, 5-mouth ring, 6-mouth ring through groove, 7-valve body, 8-valve body cavity, 9-valve body through groove, 10-water inlet cavity, 11-pump shaft, 12-first-stage pump body, 13-second-stage pump body, 14-third-stage pump body, 15-fourth-stage pump body, 16-rubber mouth ring, 17-impeller, 18-guide vane, 19-limit projection, 20-limit groove, 21-shaft sleeve, 22-rubber bearing, 23-position projection, 24-position groove, 25-water inlet gland, 26-lower bearing seat, 27-middle fixing bolt, 28-lower rubber seal, 29-mechanical seal, 30-rolling bearing, 31-rotor, 32-stator, 33-upper bearing seat, 34-upper rubber seal, 35-thrust combination device, 36-upper cover, 37-pressure regulating film, 38-upper fixing bolt, 39-gland, 40-screw, 41-top cover, 42-water outlet, 43-impeller blade, 44-impeller channel, 45-upper guide blade, 46-lower guide blade, 47-upper guide channel, 48-lower guide channel, 49-water inlet section, 50-middle section and 51-water outlet section.
Detailed Description
A triple seal multistage centrifugal pump comprises a water inlet section 49, a middle section 50 and a water discharge section 51, wherein the water inlet section 49 is positioned at the bottom of the centrifugal pump, the water discharge section 51 is positioned at the top of an off-line pump, and the middle section 50 is positioned between the water inlet section 49 and the water discharge section 51;
the water inlet section 49 comprises a pump shell 1, a bottom cover 2 is arranged below the pump shell 1, the pump shell 1 and the bottom cover 2 are fixedly connected through a lower fixing bolt 3, a water inlet 4 is arranged at the bottom end of the bottom cover 2, a valve body 7 and a mouth ring 5 are arranged in the bottom cover 2, the mouth ring 5 is positioned below the valve body 7, a mouth ring through groove 6 is arranged in the mouth ring 5, a valve body cavity 8 is arranged in the valve body 7, a valve body through groove 9 is arranged at the top of the valve body 7, a water inlet cavity 10 is arranged above the valve body 7, and the mouth ring through groove 6, the valve body cavity 8;
a pump shaft 11 is arranged in a pump shell 1, a first-stage pump body 12, a second-stage pump body 13, a third-stage pump body 14 and a fourth-stage pump body 15 are sequentially sleeved outside the pump shaft 11 from bottom to top, the first-stage pump body 12 comprises a rubber mouth ring 16, an impeller 17 and guide vanes 18, the impeller 17 is positioned above the rubber mouth ring 16, the guide vanes 18 are positioned above the impeller 17, the outer side wall of the pump shaft 11 is provided with limit protrusions 19, the inner side of the impeller 17 is provided with limit grooves 20 matched with the limit protrusions 19, the impeller 17 is provided with impeller blades 43, impeller channels 44 are formed between the impeller blades 43, the guide vanes 18 comprise upper guide vanes 45 and lower guide vanes 46, the upper guide vanes 45 are positioned at the upper parts of the guide vanes 18, the lower guide vanes 46 are positioned at the lower parts of the guide vanes 18, the rotating direction of the lower guide vanes 46 is opposite to the rotating direction, a lower guide channel 48 is formed between the lower guide vanes 46, a shaft sleeve 21 is arranged between the guide vane 18 and the pump shaft 11, a rubber bearing 22 is arranged between the guide vane 18 and the shaft sleeve 21, a positioning bulge 23 is arranged on the inner side of the guide vane 18, a positioning groove 23 is arranged on the outer side of the rubber bearing 22, the positioning bulge 23 is positioned in the positioning groove 24, and the structures of the secondary pump body 13, the tertiary pump body 14 and the quaternary pump body 15 are the same as the structure of the primary pump body 12;
the pump shaft 11 penetrates through the middle section 50, a lower bearing seat 26 is sleeved at the bottom end of the pump shaft 11, a water inlet gland 25 is arranged below the lower bearing seat 26, the water inlet gland 25 is fixedly connected with the lower bearing seat 26 through a middle fixing bolt 27, a lower rubber seal 28, a mechanical seal 29 and a rolling bearing 30 are arranged between the pump shaft 11 and the lower bearing seat 26, the mechanical seal 29 is positioned above the rolling bearing 30, the lower rubber seal 28 is positioned above the mechanical seal 29, a rotor 31 is sleeved outside the middle part of the pump shaft 11, a stator 32 is sleeved outside the rotor 31, an upper bearing seat 33 is sleeved at the top of the pump shaft 11, and an upper rubber seal 34 is arranged between the pump;
be equipped with thrust composite set 35 in drainage section 51, thrust composite set 35 installs at the top of pump shaft 11, thrust composite set 35's top is equipped with upper cover 36, upper cover 36 passes through fixing bolt 38 with thrust bearing 35 seat and is connected, be equipped with pressure regulating membrane 37 in the upper cover 36, pressure regulating membrane 37 top is equipped with gland 39, gland 39 passes through screw 40 and fixes on upper cover 36, drainage section 51's top is equipped with top cap 41, top cap 41's top is equipped with outlet 42, the top of stator 32 is connected with cable 43, cable 43 passes top cap 41.
The upper fixing bolt 38, the middle fixing bolt 27 and the lower fixing bolt 3 are all hexagon socket head bolts.
The implementation process comprises the following steps:
after the power is switched on, firstly, the pump shaft is directly driven by the motor, the pump shaft drives the impeller to suck liquid from the water inlet, the liquid is pressurized by the impeller and then continuously pressurized by the next-stage impeller until the liquid is discharged from the last-stage impeller, and then the liquid passes through the flow channel between the stator and the outer barrel and finally is discharged from the water outlet.
The above detailed description of the embodiments of the present invention is only the preferred embodiments of the present invention, and the embodiments of the present invention should not be considered as limiting the scope of the present invention, and all the equivalent changes and improvements made in the application scope of the present invention should still belong to the scope of the present invention.
Claims (2)
1. A triple seal multistage centrifugal pump characterized in that:
the centrifugal pump comprises a water inlet section, a middle section and a water drainage section, wherein the water inlet section is positioned at the bottom of the centrifugal pump, the water drainage section is positioned at the top of the off-line pump, and the middle section is positioned between the water inlet section and the water drainage section;
the water inlet section comprises a pump shell, a bottom cover is arranged below the pump shell, the pump shell and the bottom cover are fixedly connected through a lower fixing bolt, a water inlet is formed in the bottom end of the bottom cover, a valve body and a mouth ring are arranged in the bottom cover, the mouth ring is positioned below the valve body, a mouth ring through groove is formed in the mouth ring, a valve body cavity is formed in the valve body, a valve body through groove is formed in the top of the valve body, a water inlet cavity is formed in the upper portion of the valve body, and the mouth ring through groove, the valve body cavity, the valve body;
the pump comprises a pump shell, a pump shaft is arranged in the pump shell, a first-stage pump body, a second-stage pump body, a third-stage pump body and a fourth-stage pump body are sequentially sleeved outside the pump shaft from bottom to top, the first-stage pump body comprises a rubber opening ring, an impeller and guide vanes, the impeller is positioned above the rubber opening ring, the guide vanes are positioned above the impeller, the outer side wall of the pump shaft is provided with limiting bulges, the inner side of the impeller is provided with limiting grooves matched with the limiting bulges, the impeller is provided with impeller blades, an impeller channel is formed between the impeller blades, the guide vanes comprise upper guide vanes and lower guide vanes, the upper guide vanes are positioned on the upper portions of the guide vanes, the lower guide vanes are positioned on the lower portions of the guide vanes, the rotating direction of the lower guide vanes is opposite to that of the upper guide vanes, the upper guide channels are formed between the upper, a shaft sleeve is arranged between the flow guide vane and the pump shaft, a rubber bearing is arranged between the flow guide vane and the shaft sleeve, a positioning bulge is arranged on the inner side of the flow guide vane, a positioning groove is arranged on the outer side of the rubber bearing, the positioning bulge is positioned in the positioning groove, and the structures of the secondary pump body, the tertiary pump body and the quaternary pump body are the same as those of the primary pump body;
the pump shaft penetrates through the middle section, a lower bearing seat is sleeved at the bottom end of the pump shaft, a water inlet gland is arranged below the lower bearing seat, the water inlet gland is fixedly connected with the lower bearing seat through a middle fixing bolt, a lower rubber seal, a mechanical seal and a rolling bearing are arranged between the pump shaft and the lower bearing seat, the mechanical seal is positioned above the rolling bearing, the lower rubber seal is positioned above the mechanical seal, a rotor is sleeved outside the middle part of the pump shaft, a stator is sleeved outside the rotor, an upper bearing seat is sleeved at the top of the pump shaft, and an upper rubber seal is arranged between the pump shaft and the upper bearing seat;
the improved pump is characterized in that a thrust combination device is arranged in the drainage section and installed at the top of the pump shaft, an upper cover is arranged above the thrust combination device and connected with a thrust bearing seat through an upper fixing bolt, a pressure regulating film is arranged in the upper cover, a gland is arranged above the pressure regulating film and fixed on the upper cover through screws, a top cover is arranged at the top of the drainage section, a water outlet is formed in the top of the top cover, a cable is connected to the top of the stator, and the cable penetrates through the top cover.
2. A triple seal multistage centrifugal pump according to claim 1, characterized in that: the upper fixing bolt, the middle fixing bolt and the lower fixing bolt are all hexagon socket head cap bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359210.0U CN211259025U (en) | 2019-12-25 | 2019-12-25 | Triple-sealing multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359210.0U CN211259025U (en) | 2019-12-25 | 2019-12-25 | Triple-sealing multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211259025U true CN211259025U (en) | 2020-08-14 |
Family
ID=71983119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922359210.0U Active CN211259025U (en) | 2019-12-25 | 2019-12-25 | Triple-sealing multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211259025U (en) |
-
2019
- 2019-12-25 CN CN201922359210.0U patent/CN211259025U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3809491A (en) | Centrifugal pump structure | |
| CN203906303U (en) | Multi-stage, vertical, efficient and anti-cavitation cryogenic pump | |
| CN209067490U (en) | High-efficiency energy-saving horizontal self-balanced multiple-stage centrifugal pump | |
| CN104819157A (en) | Self-suction centrifugal pump | |
| CN211259025U (en) | Triple-sealing multistage centrifugal pump | |
| CN206054312U (en) | High-efficient energy-saving centrifugal pump | |
| CN203926031U (en) | Impeller serial formula energy-saving centrifugal pump | |
| CN215927792U (en) | Combined type self-priming centrifugal water pump | |
| CN108825506A (en) | It is not easy to be washed in the level of abrasion and opens horizontal double sucking pump | |
| CN205478343U (en) | S type double suction centrifugal pump | |
| CN206582118U (en) | A kind of self-priming centrifugal multistage pump multiple centrifugal pump | |
| CN206017176U (en) | A kind of magnetic drives self-priming brushless direct-current water pump | |
| CN221033148U (en) | Sewage treatment pump with good sealing performance | |
| CN111520327A (en) | Reverse double-turbine high-pressure axial-flow pump | |
| CN209041166U (en) | A kind of pumping system | |
| CN217002287U (en) | Horizontal two-stage horizontal middle-open type oil transfer pump | |
| CN214247698U (en) | Corrosion-resistant efficient centrifugal pump | |
| CN207539091U (en) | A kind of combined type deep-well pump case | |
| CN204783725U (en) | Portable high -lift immersible pump | |
| CN218542629U (en) | Dredge pump with high liquid drainage efficiency | |
| CN215486611U (en) | Horizontal split axial split first-stage double-suction seven-stage centrifugal pump | |
| CN212389537U (en) | Automobile water pump assembly | |
| CN214788011U (en) | Volute guide vane type multistage pump | |
| CN220248498U (en) | Durable axial flow pump with filtering function structure | |
| CN212389534U (en) | Balanced type multistage self-priming centrifugal pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |