CN109098979A - A kind of steel variable diameter submersible pump coupling device - Google Patents
A kind of steel variable diameter submersible pump coupling device Download PDFInfo
- Publication number
- CN109098979A CN109098979A CN201810989375.3A CN201810989375A CN109098979A CN 109098979 A CN109098979 A CN 109098979A CN 201810989375 A CN201810989375 A CN 201810989375A CN 109098979 A CN109098979 A CN 109098979A
- Authority
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- China
- Prior art keywords
- welded
- plate
- groups
- block
- submersible pump
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of steel variable diameter submersible pump coupling devices, including substrate, fixed frame and reducing elbow, the upper surface of base plate center weld has thickening plate, the thickening plate upper surface is equidistant to be welded at least six groups of hollow plates, and at least hollow plate top described in six groups is engraved structure, at least hollow plate two sides described in six groups offer through-hole, reducing elbow is made of steel, when steel part is by external force, only deformation occurs without being broken, than general cast iron materials, the service life is longer, and the reducing elbow inner wall smooth, it is once-forming in production, the resistance of water flow can be reduced, the extraneous pipe fitting such as addition variable diameter Taper Pipe is not needed in installing submersible pump, sealing number can be reduced, improve the ability of anti-leak, it is plugged in the jack hole of different height by inserted link, so as to change the height of transverse slat, and then change The height of reducing elbow can be suitble to the immersible pump of different height, easy to use, versatile.
Description
Technical field
The invention belongs to the installation and maintenance technical fields of submersible pump, and in particular to a kind of steel variable diameter submersible pump coupling
Device.
Background technique
Immersible pump is the important equipment of deep-well water lift, and when use, entire unit pulled the plug work, and underground water is extracted
Earth's surface is that domestic water, mine are speedily carried out rescue work, industry cooling, field irrigation, seawater lift, steamer tune carry, it may also be used for fountain scape
It sees, hot water immersible pump is used for hot spring bathing, could be applicable to extract underground water from deep-well, it can also be used to river, reservoir, water channel
Equal water lifts engineering, is mainly used for field irrigation and alpine region people and animals' water, also for central air-conditioning cooling, heat pump unit, cold pump
Unit, city, factory, railway, mine, building site draining use, and general flow can achieve 5~650m3/ h, lift can reach
10-550 meters.
The coupling shelf that submersible pump is installed and used at present is all made of using cast iron, since cast iron brittleness is big, in part spy
Determine under environment (the integrated prefabricated pumping plant of glass reinforced plastic) and is easy to happen fracture；When being discharged caliber requirement simultaneously and become larger, it can only couple
Frame exit adds a variable diameter Taper Pipe, could connect coupling shelf with outlet conduit, such raw and auxiliary material increases (a variable diameter
Taper Pipe, two panels flange and gasket, bolt etc.), more from extraneous increased material, then the leakproofness of mounting rack is poorer, moreover,
General coupling shelf height is certain, can not be suitble to the immersible pump of different size, poor universality.
Summary of the invention
The purpose of the present invention is to provide a kind of steel variable diameter submersible pump coupling devices, to solve to mention in above-mentioned background technique
The problem of service life is short out, needs to waste foreign material, and leakproofness is poor, poor universality.
To achieve the above object, present invention employs following technical solutions:
A kind of steel variable diameter submersible pump coupling device, including substrate, fixed frame and reducing elbow, in the upper surface of base plate
The heart is welded with thickening plate, and the thickening plate upper surface is equidistant to be welded at least six groups of hollow plates, and at least hollow described in six groups
Plate top is engraved structure, and at least hollow plate two sides described in six groups offer through-hole, and sliding peace inside the through-hole
Equipped with sliding panel, movable plate is welded between sliding panel described in corresponding two groups, the sliding panel is located at movable plate and is on the contrary
Side is welded with limited block, and the limited block center is bolted with screw rod, and one end of the screw rod is located at work through sliding panel
Inside movable plate, the movable plate two sides are symmetrically welded with two groups of support plates, and offer sliding slot in support plate described in two groups, and
Two groups of sliding blocks are slidably fitted in the sliding slot slot, the side of sliding block described in two groups is welded with second spring, second bullet
The other end of spring is welded in sliding slot slot Nell wall, and strut is hinged on the sliding block, and the movable plate internal activity is equipped with
Trapezoid block corresponding with screw rod, and the trapezoid block is symmetrically arranged with two groups of notches far from the side of screw rod, and lacks described in two groups
Internal roll of mouth is equipped with bull stick, and the other end of the strut is welded on bull stick center, and the movable plate interior welds are limited
Position ring, and the stop collar internal activity is equipped with inserted link, it is equidistant in the hollow plate to be welded at least four groups and inserted link phase
Corresponding jack, the movable plate top is equipped with connecting plate, and the connecting plate upper surface is welded with transverse slat, the fixed frame weldering
It connecing on transverse slat top, the reducing elbow is welded on fixed frame top, and described reducing elbow one end is welded with first flange disk,
The reducing elbow other end is welded with second flange disk.
Preferably, sealing ring is bonded on the inner ring inner wall of the first flange disk, in the inner ring of the second flange disk
Also sealing ring is bonded on wall.
Preferably, connecting plate is run through on the movable plate top, and the movable plate is located at the welding of one end inside connecting plate
There is limit plate, the limit plate upper surface is welded with the first spring, and the other end of first spring is welded on transverse slat following table
Face.
Preferably, first spring outwards are socketed with hollow rubber block, and hollow rubber block bottom end passes through bonding
Mode be fixed on limit plate upper surface, hollow rubber block top is fixed on transverse slat lower surface by way of bonding.
Preferably, limited block is run through in described screw rod one end, and one end that the screw rod is located on the outside of limited block is welded with rotation
Button.
Preferably, the fixed frame is made of bottom plate, supporting block and the arc panel to match with reducing elbow shape, and institute
It states bottom plate and is welded on supporting block bottom end, the arc panel is welded on supporting block top.
Preferably, at least two groups square three-way groove is offered in the supporting block, and is all provided at least two groups square three-way groove slot
There is support frame.
Preferably, support frame as described above is made of two groups of risers and inclined plate, and the inclined plate is welded between two groups of risers.
Technical effect and advantage of the invention: a kind of steel variable diameter submersible pump coupling device proposed by the present invention, and it is existing
Technology is compared, and is had the advantage that
1, reducing elbow is made of steel, and when steel part is by external force, only deformation occurs without being broken, than general cast iron
Materials'use longer life expectancy, and the reducing elbow inner wall smooth, it is once-forming in production, the resistance of water flow can be reduced,
The extraneous pipe fitting such as addition variable diameter Taper Pipe is not needed when installing submersible pump, can be reduced sealing number, be improved the ability of anti-leak,
2, it is plugged in the jack hole of different height by inserted link, so as to change the height of transverse slat, and then changes and become
The height of diameter bend pipe can be suitble to the immersible pump of different height, easy to use, versatile.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is fixed rack structure schematic diagram of the invention；
Fig. 3 is thickening plate structural schematic diagram of the invention；
Fig. 4 is hollow plate structural schematic diagram of the invention；
Fig. 5 is movable plate schematic diagram of internal structure of the invention；
Fig. 6 is supporting plate structure schematic diagram of the invention；
Fig. 7 is structural schematic diagram at A of the invention.
In figure: 1 substrate, 2 fixed frames, 201 bottom plates, 202 supporting blocks, 203 arc panels, 3 reducing elbows, 4 first flange disks,
5 second flange disks, 6 sealing rings, 7 square three-way grooves, 8 support frames, 801 risers, 802 inclined plates, 9 thickening plates, 10 transverse slats, 11 connections
Plate, 12 hollow plates, 13 movable plates, 14 limit plates, 15 limited blocks, 16 first springs, 17 hollow rubber blocks, 18 through-holes, 19 jacks,
20 inserted links, 21 stop collars, 22 knobs, 23 sliding panels, 24 screw rods, 25 trapezoid blocks, 26 support plates, 27 struts, 28 sliding slots, 29 second
Spring, 30 sliding blocks, 31 notches, 32 bull sticks.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Herein
Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of steel variable diameter submersible pump coupling devices as shown in figs. 1-7, including substrate 1, fixed frame 2
With reducing elbow 3, which is supported using steel, and when steel part is by external force, only deformation occurs without being broken, than general
Cast iron materials the service life is longer, and 3 inner wall smooth of reducing elbow can reduce the resistance of water flow, which is used for
Fixed reducing elbow 3, the 1 upper surface center weld of substrate have thickening plate 9, and 9 upper surface of thickening plate is equidistant to be welded with
At least six groups of hollow plates 12, and at least 12 top of hollow plate described in six groups is engraved structure, at least hollow plate 12 described in six groups
Two sides offer through-hole 18, and sliding panel 23 is slidably fitted with inside the through-hole 18, slide described in corresponding two groups
Movable plate 13 is welded between plate 23, the sliding panel 23 is located at movable plate 13 and is welded with limited block 15, and institute on the contrary for side
It states 15 center of limited block and is bolted with screw rod 24, and one end of the screw rod 24 is located inside movable plate 13 through sliding panel 23, institute
It states 13 two sides of movable plate and is symmetrically welded with two groups of support plates 26, which is used to support sliding block 30, and supports described in two groups
Sliding slot 28 is offered on plate 26, and two groups of sliding blocks 30 are slidably fitted in 28 slot of the sliding slot, the one of sliding block 30 described in two groups
Side is welded with second spring 29, and the other end of the second spring 29 is welded in 28 slot Nell wall of sliding slot, the sliding block 30
On be hinged with strut 27,13 internal activity of movable plate is equipped with trapezoid block 25 corresponding with screw rod 24, and described trapezoidal
Block 25 is symmetrically arranged with two groups of notches 31 far from the side of screw rod 24, and rolls inside notch 31 described in two groups and be equipped with bull stick
32, the other end of the strut 27 is welded on 32 center of bull stick, the 13 interior welds restraining position ring block 21 of movable plate, and the limit
Position 21 internal activity of ring is equipped with inserted link 20, in the hollow plate 12 it is equidistant be welded at least four groups it is corresponding with inserted link 20
Jack 19,13 top of movable plate is equipped with connecting plate 11, and 11 upper surface of the connecting plate is welded with transverse slat 10, the fixation
Frame 2 is welded on 10 top of transverse slat, and the reducing elbow 3 is welded on 2 top of fixed frame, and 3 one end of the reducing elbow is welded with
First flange disk 4,3 other end of reducing elbow are welded with second flange disk 5.
Preferably, sealing ring 6 is bonded on the inner ring inner wall of the first flange disk 4, the inner ring of the second flange disk 5
Also sealing ring 6 is bonded on inner wall.
By using above-mentioned technical proposal, capable of preventing reducing elbow 3 by sealing ring 6, there is a phenomenon where leaks.
Preferably, connecting plate 11 is run through on 13 top of movable plate, and the movable plate 13 is located inside connecting plate 11
One end is welded with limit plate 14, and 14 upper surface of limit plate is welded with the first spring 16, and first spring 16 is another
End is welded on 10 lower surface of transverse slat.
By using above-mentioned technical proposal, transverse slat 10 is supported by the first spring 16, the shaking of transverse slat 10 can be reduced, made
Reducing elbow 3 keeps stablizing.
Preferably, being socketed with hollow rubber block 17 on the outside of first spring 16, and 17 bottom end of hollow rubber block is logical
The mode for crossing bonding is fixed on 14 upper surface of limit plate, and 17 top of hollow rubber block is fixed on transverse slat by way of bonding
10 lower surfaces.
By using above-mentioned technical proposal, hollow rubber block 17 can prevent water from contacting with the first spring 16, to prevent
First spring 16 is corroded, and rubber material matter is soft, can deformation occurs, the first spring 16 shrink when, hollow rubber block
17 also can deformation occurs.
Preferably, limited block 15 is run through in described 24 one end of screw rod, and the screw rod 24 is located at the one end in 15 outside of limited block
It is welded with knob 22.
By using above-mentioned technical proposal, operator can be such that screw rod 24 rotates by turning knob 22, operation letter
It is single, it is easy to use
Preferably, the fixed frame 2 is by bottom plate 201, supporting block 202 and the arc panel to match with 3 shape of reducing elbow
203 compositions, and the bottom plate 201 is welded on 202 bottom end of supporting block, the arc panel 203 is welded on 202 top of supporting block.
By using above-mentioned technical proposal, it is connect by bottom plate 201 with transverse slat 10, can be fixed by fixed frame 2, and pass through
Reducing elbow 3 is welded on 203 upper surface of arc panel, and so as to which reducing elbow 3 is fixed, supporting block 202 can support variable diameter
Bend pipe 3.
Preferably, offering at least two groups square three-way groove 7 in the supporting block 202, and in 7 slot of at least two groups square three-way groove
It is equipped with support frame 8.
By using above-mentioned technical proposal, square three-way groove 7 can reduce the weight of supporting block 202, be carried out by support frame 8
Support, can guarantee the stability of supporting block 202
Preferably, support frame as described above 8 is made of two groups of risers 801 and inclined plate 802, and the inclined plate 802 is welded on two groups
Between riser 801.
By using above-mentioned technical proposal, two groups of risers 801 are supported by inclined plate 802, two groups of risers 801 can be consolidated
It is fixed, so that riser 801 be enable to support supporting block 202.
Structural principle: reducing elbow 3 is made of steel, and when steel part is by external force, only deformation occurs without being broken, than one
As cast iron materials the service life is longer, and 3 inner wall smooth of reducing elbow is once-forming in production, can reduce water flow
Resistance, the extraneous pipe fitting of addition variable diameter Taper Pipe etc. is not needed in installing submersible pump, sealing number can be reduced, improve anti-leak
Ability；According to the specification of immersible pump, so that moving active plate 13 rotates spiral shell when movable plate 13 is moved to the height of needs
Bar 24, to keep screw rod 24 mobile, it is mobile that screw rod 24 can support trapezoid block 25, to make trapezoid block 25 that inserted link 20 be supported to move
It is dynamic, it is plugged on inserted link 20 in 19 hole of jack, so as to fix transverse slat 10, reducing elbow 3 can be fixed on to different height
Degree, so that the present apparatus is enable to be suitble to the immersible pump of different height, it is easy to use, it is versatile.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (8)
1. a kind of steel variable diameter submersible pump coupling device, including substrate (1), fixed frame (2) and reducing elbow (3), feature exists
In: substrate (1) upper surface center weld has thickening plate (9), and thickening plate (9) upper surface is equidistant to be welded at least six
It organizes hollow plate (12), and at least hollow plate described in six groups (12) top is engraved structure, at least hollow plate described in six groups (12)
Two sides offer through-hole (18), and are slidably fitted with sliding panel (23) inside the through-hole (18), corresponding two groups of institutes
It states and is welded between sliding panel (23) movable plate (13), sliding panel (23) side is welded with limited block (15), and the limit
Position block (15) center is bolted with screw rod (24), and one end of the screw rod (24) is located in movable plate (13) through sliding panel (23)
Portion, movable plate (13) two sides are symmetrically welded with two groups of support plates (26), and offer in support plate described in two groups (26)
Sliding slot (28), and two groups of sliding blocks (30) are slidably fitted in the sliding slot (28) slot, the side of sliding block described in two groups (30) is welded
It is connected to second spring (29), the other end of the second spring (29) is welded in sliding slot (28) slot Nell wall, the sliding block
(30) it is hinged on strut (27), movable plate (13) internal activity is equipped with trapezoid block corresponding with screw rod (24)
(25), and the side of the trapezoid block (25) separate screw rod (24) is symmetrically arranged with two groups of notches (31), and notch described in two groups
(31) internal roll is equipped with bull stick (32), and the other end of the strut (27) is welded on bull stick (32) center, the activity
Plate (13) interior welds restraining position ring block (21), and the stop collar (21) internal activity is equipped with inserted link (20), the hollow plate
(12) equidistant on to be welded at least four groups of jacks (19) corresponding with inserted link (20), movable plate (13) top, which is equipped with, to be connected
Fishplate bar (11), and the connecting plate (11) upper surface is welded with transverse slat (10), the fixed frame (2) is welded on transverse slat (10) top
End, the reducing elbow (3) is welded on fixed frame (2) top, and the reducing elbow (3) one end is welded with first flange disk
(4), reducing elbow (3) other end is welded with second flange disk (5).
2. a kind of steel variable diameter submersible pump coupling device according to claim 1, it is characterised in that: the first flange disk
(4) it is bonded on inner ring inner wall sealing ring (6), is also bonded with sealing ring on the inner ring inner wall of the second flange disk (5)
(6)。
3. a kind of steel variable diameter submersible pump coupling device according to claim 1, it is characterised in that: the movable plate (13)
Connecting plate (11) are run through on top, and the movable plate (13) is located at the internal one end of connecting plate (11) and is welded with limit plate (14),
Limit plate (14) upper surface is welded with the first spring (16), and the other end of first spring (16) is welded on transverse slat
(10) lower surface.
4. a kind of steel variable diameter submersible pump coupling device according to claim 3, it is characterised in that: first spring
(16) outside is socketed with hollow rubber block (17), and the hollow rubber block (17) bottom end is fixed on limit by way of bonding
Plate (14) upper surface, hollow rubber block (17) top are fixed on transverse slat (10) lower surface by way of bonding.
5. a kind of steel variable diameter submersible pump coupling device according to claim 1, it is characterised in that: the screw rod (24) one
Limited block (15) are run through at end, and the screw rod (24) is located at one end on the outside of limited block (15) and is welded with knob (22).
6. a kind of steel variable diameter submersible pump coupling device according to claim 1, it is characterised in that: the fixed frame (2)
It is made of bottom plate (201), supporting block (202) and the arc panel (203) to match with reducing elbow (3) shape, and the bottom plate
(201) it is welded on supporting block (202) bottom end, the arc panel (203) is welded on supporting block (202) top.
7. a kind of steel variable diameter submersible pump coupling device according to claim 6, it is characterised in that: the supporting block
(202) it is offered at least two groups square three-way groove (7), and is equipped with support frame (8) at least two groups square three-way groove (7) slot.
8. a kind of steel variable diameter submersible pump coupling device according to claim 7, it is characterised in that: support frame as described above (8)
It is made of two groups of risers (801) and inclined plate (802), and the inclined plate (802) is welded between two groups of risers (801).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810989375.3A CN109098979A (en) | 2018-08-28 | 2018-08-28 | A kind of steel variable diameter submersible pump coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810989375.3A CN109098979A (en) | 2018-08-28 | 2018-08-28 | A kind of steel variable diameter submersible pump coupling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109098979A true CN109098979A (en) | 2018-12-28 |
Family
ID=64864023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810989375.3A Pending CN109098979A (en) | 2018-08-28 | 2018-08-28 | A kind of steel variable diameter submersible pump coupling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109098979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115539443A (en) * | 2022-09-30 | 2022-12-30 | 浙江江南春建设集团有限公司 | Water pump shell fixing structure and construction method thereof |
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| CN201661522U (en) * | 2009-12-14 | 2010-12-01 | 上海邦浦实业集团有限公司 | Novel positioning cone and coupling frame |
| CN206751333U (en) * | 2017-04-05 | 2017-12-15 | 浙江和泽电子科技有限公司 | A kind of lift easy to remove and fixed |
| CN108046354A (en) * | 2018-01-31 | 2018-05-18 | 刘冲 | A kind of environment protection sewage processing equipment |
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2018
- 2018-08-28 CN CN201810989375.3A patent/CN109098979A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100728865B1 (en) * | 2006-09-30 | 2007-06-19 | (주)대진정공 | Auotomatic deassemble for underwater pump |
| EP2009645A2 (en) * | 2007-06-26 | 2008-12-31 | GE-Hitachi Nuclear Energy Americas LLC | Apparatus and method for repairing riser pipe elbow weld in boiling water nuclear reactor |
| CN201661522U (en) * | 2009-12-14 | 2010-12-01 | 上海邦浦实业集团有限公司 | Novel positioning cone and coupling frame |
| CN206751333U (en) * | 2017-04-05 | 2017-12-15 | 浙江和泽电子科技有限公司 | A kind of lift easy to remove and fixed |
| CN108046354A (en) * | 2018-01-31 | 2018-05-18 | 刘冲 | A kind of environment protection sewage processing equipment |
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| CN115539443A (en) * | 2022-09-30 | 2022-12-30 | 浙江江南春建设集团有限公司 | Water pump shell fixing structure and construction method thereof |
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Application publication date: 20181228 |