CN203702673U - Water intake self-flushing structure for double-shell multistage centrifugal pump - Google Patents
Water intake self-flushing structure for double-shell multistage centrifugal pump Download PDFInfo
- Publication number
- CN203702673U CN203702673U CN201320813985.0U CN201320813985U CN203702673U CN 203702673 U CN203702673 U CN 203702673U CN 201320813985 U CN201320813985 U CN 201320813985U CN 203702673 U CN203702673 U CN 203702673U
- Authority
- CN
- China
- Prior art keywords
- water
- centrifugal pump
- water intake
- multistage centrifugal
- pipe
- 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.)
- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 4
- 231100000167 toxic agent Toxicity 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a water intake self-flushing structure for a double-shell multistage centrifugal pump. The structure comprises an outer shell, an inner shell, a sealing gasket, a water intake hole, a water intake pipe, an inter-stage flow channel and a water distribution pipe, wherein the sealing gasket is circumferentially arranged on the part, in sealed connection with the outer shell, of the inner shell; an annular groove and a sealing ring groove are also circumferentially formed in the part, in sealed connection with the outer shell, of the inner shell; the annular groove is positioned between the sealing gasket and the sealing ring groove; one end of the water intake hole is communicated with one end of the water intake pipe, and the communicated parts of the water intake hole and the water intake pipe are welded together; the other end of the water intake hole penetrates through the annular groove, and is communicated with the inter-stage flow channel; the other end of the water intake pipe is connected with the water distribution pipe; water outlets of the water distribution pipe are connected with mechanical seal flushing pipes. The structure has the beneficial effects that the problems of poor reliability, complex structure and difficulty in maintenance in the prior art are solved.
Description
Technical field
The utility model relates to a kind of double Shell multistage centrifugal pump and fetches water from flushing mechanism.
Background technique
Barrel bag pump, particularly double Shell multistage centrifugal pump will be realized machine envelope from rinsing, and water intaking is difficulty comparatively.Existing double Shell multistage centrifugal pump water intaking has following two kinds from the main structure form of flushing mechanism:
1, outlet(discharge) flange water intaking structure.As shown in Figure 3, this structure connects throttling arrangement 18 from outlet(discharge) flange 17, seals from outlet(discharge) flange 17 diversion relief developing machines by throttling arrangement 18.Because outlet(discharge) flange 17 place's hydraulic pressure are higher, in the case of the washing away and cavitate of high pressure water, both easily made the seal failure on throttling arrangement 18, also easily make the orifice plate damage on machine envelope and throttling arrangement 18, reliability deficiency; In addition, the boundary dimension of throttling arrangement 18 is larger and complicated.
2, first stage impeller water intaking structure.As shown in Figure 4, this structure is being got through hole at frame 1, in through hole 14, be provided with and take over 16, taking over 16 one end is communicated with the first stage impeller in inner housing 2, the other end is fixed together with frame 1 by pressing plate 15 and is communicated with by flange 11 with cross distributed water pipe, the cross distributed water pipe left and right water outlet envelope cleaning hose 8 that picks, the upper water-out mouth air valve 9 that runs in.While being installed on frame 1 due to inner housing 2, inner housing 2 be circumferentially positioned with deviation, cause pressing plate 15 and the perpendicularity of taking over 16 axial compression amount not enough and adapter 16 to guarantee, pressing plate 15 and sealing gasket and the pressing plate 15 of frame 1 fixed position were lost efficacy with the seal ring of cross distributed water pipe link position; And this structure is mainly used in conveying poor methanol, poor methanol is poisonous and do not allow to reveal, but that it is provided with on inner housing 2 and frame 1 is multiple-sealed, and reliability deficiency, easily causes toxic substance leakage accident; In addition, because the part of this structure is many, complex structure, it takes over 16 sealing thread being connected with first stage impeller easy corrosion, dismantles difficult and makes difficult in maintenance.
Obviously, a kind of suitable water intaking of double Shell multistage centrifugal pump exigence design solves the problems referred to above from flushing mechanism.
Summary of the invention
The purpose of this utility model is to provide a kind of double Shell multistage centrifugal pump to fetch water from flushing mechanism, to solve the reliability deficiency, complex structure and the problem difficult in maintenance that exist in prior art.
The purpose of this utility model can reach by following technical measures, , this double Shell multistage centrifugal pump is fetched water from flushing mechanism, comprise frame, inner housing, sealing gasket, water intaking hole, intake pipe, inter-stage runner and distributed water pipe, described sealing gasket is circumferentially arranged on inner housing and frame combination seal place, on inner housing, be also circumferentially provided with circular groove and seal groove with frame combination seal place, and circular groove is positioned in the middle of sealing gasket and seal groove, the water intaking one end in hole and one end of intake pipe are communicated with, and both weld together connectivity part, the other end is through circular groove, and be communicated with inter-stage runner, the other end of intake pipe is connected with distributed water pipe, the distributed water pipe water outlet envelope cleaning hose that picks.
Further, in described seal groove, be provided with O RunddichtringO.
Further, described intake pipe is that flange is connected or is threaded with the Placement of distributed water pipe.
Further, described distributed water pipe is cross distributed water pipe.
Further, the described cross distributed water pipe left and right water outlet envelope cleaning hose that all picks, the upper water-out mouth air valve that runs in.
Compare traditional double Shell multistage centrifugal pump and fetch water from flushing mechanism, the water intaking of the utility model double Shell multistage centrifugal pump is from the advantage of flushing mechanism:
1, because being also circumferentially provided with circular groove and seal groove and circular groove with frame combination seal place on inner housing described in flushing mechanism, the water intaking of the utility model double Shell multistage centrifugal pump is positioned in the middle of sealing gasket and seal groove, the water intaking one end in hole and one end of intake pipe are communicated with, only have one sealing, reliability is high, and the position that described water intaking hole is communicated with intake pipe welding, the accident of having avoided toxic substance to leak.
2, because the water intaking of the utility model double Shell multistage centrifugal pump is passed circular groove and is communicated with inter-stage runner from the hole of fetching water described in flushing mechanism, water intaking hole and distributed water pipe are in both connectivity part welding, simple in structure, and realize and fetching water from inter-stage runner, hydraulic pressure is low, has promoted reliability, and water intaking hole is the through hole of getting through inter-stage runner, maintenance point reduces, and has solved the problem of maintenance difficult.
3, the position boring that is the corresponding circular groove of frame from the hole of fetching water described in flushing mechanism due to the water intaking of the utility model double Shell multistage centrifugal pump forms, and be communicated with intake pipe, its exit position can arbitrarily be adjusted according to outlet(discharge) flange direction, and therefore rinsing parts can standardization.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of the utility model double Shell multistage centrifugal pump water intaking from flushing mechanism;
Fig. 2 is that the utility model double Shell multistage centrifugal pump is fetched water from the A of flushing mechanism portion enlarged view;
Fig. 3 is the structural representation of existing double Shell multistage centrifugal pump water intaking from one of flushing mechanism;
Fig. 4 is the water intaking of existing double Shell multistage centrifugal pump from two structural representation of flushing mechanism;
In Fig. 1,2,3 and 4,1 is frame, and 2 is inner housing, and 3 is seal groove, 4 is inter-stage runner, and 5 is water intaking hole, and 6 is sealing gasket, 7 is intake pipe, and 8 is machine envelope cleaning hose, and 9 is outlet valve, 10 is distributed water pipe, and 11 is flange, and 12 is circular groove, 13 is O RunddichtringO, and 14 is through hole, and 15 is pressing plate, 16 for taking over, and 17 is outlet(discharge) flange, and 18 is throttling arrangement.
Below in conjunction with the drawings and specific embodiments, to the utility model double Shell multistage centrifugal pump, water intaking is further described from flushing mechanism.
Embodiment
As illustrated in fig. 1 and 2, a kind of double Shell multistage centrifugal pump is fetched water from flushing mechanism, comprise frame 1, inner housing 2, sealing gasket 6, water intaking hole 5, intake pipe 7, inter-stage runner 4 and distributed water pipe 10, described sealing gasket 6 is circumferentially arranged on inner housing 2 and frame 1 combination seal place, on inner housing 2, be also circumferentially provided with circular groove 12 and seal groove 3 with frame 1 combination seal place, and circular groove 12 is positioned in the middle of sealing gasket 6 and seal groove 3, the one end in described water intaking hole 5 is communicated with one end of intake pipe 7, and both weld together connectivity part, the other end is through circular groove 12, and be communicated with inter-stage runner 4, the other end of intake pipe 7 is connected with described distributed water pipe 10, distributed water pipe 10 water outlets pick and seal cleaning hose 8.
In the present embodiment, in described seal groove 3, be provided with O RunddichtringO 13, intake pipe 7 passes through as flange 11 is connected with distributed water pipe 10, and distributed water pipe 10 is cross distributed water pipe, this cross distributed water pipe left and right water outlet envelope cleaning hose 8 that all picks, the upper water-out mouth air valve 9 that runs in.
When work, current flow into water intaking hole 5 from inter-stage runner 4 by hydraulic pressure, and by entering cross distributed water pipe with the intake pipe 7 that welds of water intaking hole 5, the machine envelope cleaning hose 8 connecing by cross distributed water pipe left and right water outlet again enters machine envelope rinse mouth relief developing machine envelope, completes the flushing certainly of double Shell multistage centrifugal pump machine envelope.
The water intaking of the utility model double Shell multistage centrifugal pump is from the beneficial effect of the technological scheme of flushing mechanism: solved the reliability deficiency, complex structure and the problem difficult in maintenance that in prior art, exist
Above embodiment is only explanation technological thought of the present utility model; can not limit protection domain of the present utility model with this; every technological thought according to the utility model proposes, any change of doing on technological scheme basis, within all falling into the utility model protection domain.
Claims (5)
1. a double Shell multistage centrifugal pump is fetched water from flushing mechanism, comprise frame (1), inner housing (2), sealing gasket (6), water intaking hole (5), intake pipe (7), inter-stage runner (4) and distributed water pipe (10), described sealing gasket (6) is circumferentially arranged on inner housing (2) above and frame (1) combination seal place, it is characterized in that: on described inner housing (2) and frame (1) combination seal place is also circumferentially provided with circular groove (12) and seal groove (3), and circular groove (12) is positioned in the middle of sealing gasket (6) and seal groove (3), the one end in described water intaking hole (5) is communicated with one end of intake pipe (7), and both weld together connectivity part, the other end is through circular groove (12), and be communicated with inter-stage runner (4), the other end of intake pipe (7) is connected with described distributed water pipe (10), distributed water pipe (10) water outlet picks and seals cleaning hose (8).
2. double Shell multistage centrifugal pump according to claim 1 is fetched water from flushing mechanism, it is characterized in that: in described seal groove (3), be provided with O RunddichtringO (13).
3. double Shell multistage centrifugal pump according to claim 1 is fetched water from flushing mechanism, it is characterized in that: described intake pipe (7) is that flange is connected or is threaded with the Placement of distributed water pipe (10).
4. double Shell multistage centrifugal pump according to claim 1 is fetched water from flushing mechanism, it is characterized in that: described distributed water pipe (10) is cross distributed water pipe.
5. double Shell multistage centrifugal pump according to claim 4 is fetched water from flushing mechanism, it is characterized in that: the described cross distributed water pipe left and right water outlet envelope cleaning hose (8) that all picks, the upper water-out mouth air valve (9) that runs in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320813985.0U CN203702673U (en) | 2013-12-12 | 2013-12-12 | Water intake self-flushing structure for double-shell multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320813985.0U CN203702673U (en) | 2013-12-12 | 2013-12-12 | Water intake self-flushing structure for double-shell multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702673U true CN203702673U (en) | 2014-07-09 |
Family
ID=51053124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320813985.0U Expired - Lifetime CN203702673U (en) | 2013-12-12 | 2013-12-12 | Water intake self-flushing structure for double-shell multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702673U (en) |
-
2013
- 2013-12-12 CN CN201320813985.0U patent/CN203702673U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
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| CX01 | Expiry of patent term |