CN2551784Y - Multistage serial integrated water pump - Google Patents
Multistage serial integrated water pump Download PDFInfo
- Publication number
- CN2551784Y CN2551784Y CN 02224248 CN02224248U CN2551784Y CN 2551784 Y CN2551784 Y CN 2551784Y CN 02224248 CN02224248 CN 02224248 CN 02224248 U CN02224248 U CN 02224248U CN 2551784 Y CN2551784 Y CN 2551784Y
- Authority
- CN
- China
- Prior art keywords
- stage casing
- high pressure
- pressure stage
- low pressure
- 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.)
- Expired - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a multi-stage series connected water pump, mainly used for solving the technical problems that a traditional multi-stage single-suction water pump adopts the method of a balancing disc to balance the axial pushing forces. When the water pump is started, the axial string quantity is increased due to a short-term impact and friction caused by the balancing disc and the balancing board and thus hazards are liable to be caused. The utility model comprises a pump shell and a pump shaft (1) connected with a power device. The left end of a low-pressure inflow section (2) connected with an inflow pipe is sleeved on the pump shaft (1) in a movable sealing way and the right end communicates with a low-pressure central section (14). The right end of a low-pressure draining section (4) is sealed in a movable way and sleeved on the pump shaft (1). The right end of a high-pressure inflow section (3) is sealed in a movable way and sleeved on the pump shaft (1) counter to the low-pressure inflow section (2). A middle water pipe (11) communicates with the water inlet of the high-pressure inflow section (3) and the water outlet of the low-pressure draining section (4) respectively. The left end of the high-pressure inflow section (3) communicates with a high-pressure middle section (16). The left end of a high-pressure draining section (5), which communicates with the high-pressure middle section (16) and is arranged with an impeller (17), is sleeved on the pump shaft (1) in a movable sealing way. The utility model is a multi-stage series connected water pump free from axial pushing forces and with a higher efficiency.
Description
Technical field
The utility model relates to a kind of water pump, particularly a kind of plural serial stage disjunctor water pump.
Technical background
It comprises the traditional multistage single suction type water pump abbreviation D type water pump that now generally uses base, pump case, is sleeved on multi-stage impeller, Equilibrator on the pump shaft, and other annex.It is with Balance disc method balancing axial thrust, when starting of pump station, because the generation of equilibrant exists retardation phenomenon, Balance disc and balance plate is produced clash in short-term and rub, and the axial string quantity of meeting increase works the mischief after the wearing and tearing.
Summary of the invention
The purpose of this utility model is to provide a kind of do not have end thrust, plural serial stage disjunctor water pump that efficient is higher.The purpose of this utility model is achieved through the following technical solutions: it comprises pump case, with the power plant pump shaft 1 that joins, it is characterized in that: become movable sealing sleeve to be contained on the pump shaft 1 with the left end of the low pressure inlet segment 2 that comes water pipe to join, right-hand member communicates with the low pressure stage casing 14 that is set with low pressure stage casing impeller 6 and low pressure stage casing stator 7, low-pressure drainage section 4 right-hand members of the shrunk-on disc 15 that communicates with low pressure stage casing 14 become the motive sealing engage sleeves to be contained on the pump shaft 1, the right-hand member of high pressure inlet segment 3 becomes motive sealing and low pressure inlet segment 2 opposing being sleeved on the pump shaft 1, middle water pipe 11 is connected with the water intake of high pressure inlet segment 3 and the drain opening of low-pressure drainage section 4 respectively, the left end of high pressure inlet segment 3 be set with high pressure stage casing impeller 18, the high pressure stage casing 16 of high pressure stage casing stator 19 is connected, and the left end of the High Pressure Drain section 5 that is set with impeller 17 that is connected with high pressure stage casing 16 becomes movable sealing sleeve to be equipped with on the pump shaft 1.The high pressure inlet segment 3 and the low pressure inlet segment 2 of opposing installation are installed on the pump shaft 1 suit seal ring 9 between sleeve 8 and high pressure inlet segment 3, suit seal ring 10 between sleeve 8 and low pressure inlet segment 2 by sleeve 8.High pressure inlet segment 3 left sides become motive sealing to cooperate suit 1-5 high pressure stage casing 16 that is respectively installed with high pressure stage casing impeller 18, high pressure stage casing stator 19, the left side of low pressure inlet segment 2 becomes motive sealing to cooperate suit 1-5 low pressure stage casing 14 that is respectively installed with low pressure stage casing impeller 6 and low pressure stage casing stator 7, and middle water pipe 11 is arranged on and forms the integrated type enclosed channel on the pump housing.The high pressure stage casing 16 of opposing installation is identical with size, the specification in low pressure stage casing 14, and the impeller 6 in the impeller 18 in high pressure stage casing, stator 19 and low pressure stage casing, the Hand of spiral of stator 7 are identical.Outlet valve 12 is installed on the middle water pipe 11.
Hence one can see that, the utility model is for connecting pump integrating hereinafter to be referred as DC type water pump for multistage (even level) no end thrust, it is to retrofit on the basis of traditional D type water pump, it is divided into two even level tradition D type water pump, be divided into two sections of high pressure side and low voltage sides, design two inlet segments and two draining sections on a pump, the centre of both sides is equipped with the stage casing of symmetry respectively, and corresponding impeller and stator in each stage casing.Owing to the impeller quantity of both sides on the same pump shaft is equal, direction is opposite, so end thrust equal and opposite in direction and direction that both sides produce are opposite, cancels out each other.Therefore do not have end thrust, do not need to use Equilibrator.
The utility model passes through to increase a draining section and an inlet segment, but has cancelled Equilibrator, and has deducted the shared axial length of stuffing frame.And packing cavity is cast directly on the two ends draining section pump housing, can come closer, and bearing bracket stand can suitably shorten.Therefore the axial length that water pump increased can be not a lot.But the cancellation of Equilibrator has produced following beneficial effect to the operation of water pump:
1, improved the efficient of water pump
According to relevant calculation of parameter, the draining section that increases and an inlet segment and middle water pipe thereof, its drag losses is no more than one of percentage.(and in fact water has drag losses too from previous stage impeller inlet one-level impeller inlet after stator enters), and surpass one of percentage from the water that the Balance disc return pipe flows out.Again because of the essentially no end thrust of the utility model, as long as pump rotor can rotate freely, do not need to resemble and stay the moving surplus of string traditional D type pump, fixed component (stage casing and stator) that just can be by shortening pump and the length of rotatable parts (pump shaft and lining), thus the support or oppose gap of both sides of impeller reduced.Reach the backflow leakage loss that reduces pump inside.And also owing to there is not the frictional resistance of Equilibrator, energy consumption slightly descends.
2, reduced the materials consumption of spreadable life
Tradition D type water pump Balance disc method balancing axial thrust.When starting of pump station,, make the generation of Balance disc and balance plate clash in short-term and rub because the generation of equilibrant exists retardation phenomenon.Can increase axial string quantity after the wearing and tearing, work the mischief.Therefore, overflow in order to prevent string quantity, the maintenance man must running check, adjustment and replacing Balance disc and balance plate.And the utility model does not have its materials consumption, and the axial wearing and tearing between fixed component and the rotatable parts can significantly reduce, and has prolonged the working life of easily damaged parts.
3, because the utility model has been eliminated end thrust, thereby reduced the workload of maintenance man's inspection, adjustment and replacing Equilibrator, and eliminated owing to neglect the accident potential cause string quantity to overflow to grind away water pump and damage even to burn out motor.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Embodiment 1, driving pump shaft 1 by power plant rotates, the low pressure stage casing impeller 6, the high pressure stage casing impeller 18 that are packed on the pump shaft 1 by key pin are rotated, thereby make the water origin water pipe of lower enter low pressure inlet segment 2, impeller 6 superchargings through low pressure stage casing 14, enter low-pressure drainage section 4 through middle water pipe 11 to high pressure inlet segment 3, after impeller 18 repressurizes in high pressure stage casing, deliver to High Pressure Drain section 5 again and connect the pipeline that pumps up water water is delivered to eminence.Low pressure of the present utility model stage casing stator 7 and high pressure stage casing stator 19 play the guiding role.
Embodiment 2, as shown in Figure 1, present embodiment adopts 4 grades of supercharging modes, driving pump shaft 1 by power plant rotates, make by key pin and be packed in low pressure stage casing impeller 6 on the pump shaft 1, low-pressure drainage section impeller 15, high pressure stage casing impeller 18 and High Pressure Drain section impeller 17 rotate, thereby make the water origin water pipe of lower enter low pressure inlet segment 2, impeller 6 superchargings through low pressure stage casing 14, enter low-pressure drainage section 4, again through 15 superchargings of low-pressure drainage section impeller after middle water pipe 11 to high pressure inlet segment 3, after impeller 18 repressurizes in high pressure stage casing, deliver to High Pressure Drain section 5 again, after High Pressure Drain section impeller 17 is sent into the pipeline that pumps up water after the supercharging once more water is delivered to eminence.
Embodiment 3, in order to improve lift, become motive sealing to cooperate 3 of suits to be respectively installed with the high pressure stage casing 16 of high pressure stage casing impeller 18, high pressure stage casing stator 19 in high pressure inlet segment 3 left sides, the left side of low pressure inlet segment 2 becomes motive sealing to cooperate 3 of suits to be respectively installed with the low pressure stage casing 14 of low pressure stage casing impeller 6 and low pressure stage casing stator 7, and its working principle is with embodiment 2.
Embodiment 4, in order to improve lift once more, become motive sealing to cooperate 4 of suits to be respectively installed with the high pressure stage casing 16 of high pressure stage casing impeller 18, high pressure stage casing stator 19 in high pressure inlet segment 3 left sides, the left side of low pressure inlet segment 2 becomes motive sealing to cooperate 4 of suits to be respectively installed with the low pressure stage casing 14 of low pressure stage casing impeller 6 and low pressure stage casing stator 7, and its working principle is with embodiment 2.
Embodiment 5, in order to improve lift once more, become motive sealing to cooperate 5 of suits to be respectively installed with the high pressure stage casing 16 of high pressure stage casing impeller 18, high pressure stage casing stator 19 in high pressure inlet segment 3 left sides, the left side of low pressure inlet segment 2 becomes motive sealing to cooperate 5 of suits to be respectively installed with the low pressure stage casing 14 of low pressure stage casing impeller 6 and low pressure stage casing stator 7, and its working principle is with embodiment 2.
In sum, the utility model also claims DC type water pump for series connection connection type water pump, and in order to reach the purpose of eliminating end thrust, the impeller number of high and low pressure both sides should equate, impeller that low voltage side is all and stator all will change it to, back of the body position.Its back side changes water entering surface into, and its spiral angle should be identical with high pressure side impeller and stator with Hand of spiral, and makes mark when making low voltage side impeller and stator, in case mistaken during assembling, causes the water pump can't draining.
When adopting 2 grades to be each one-level of high and low pressure side, low pressure delivery and high-pressure intake pipe mouth should be rotated to an angle, avoid the pipeline of the high-pressure intake pipe mouth and the draining mouth of pipe to be connected inconvenient.
The utility model is to use under the not enough situation of traditional SH type pump head, is suitable with 4,6,8 grades, and traditional D type pump of odd level should change the DC type water pump that its impeller diameter (increase or reduce) changes even level into.(marking same bore, same progression, different single-stage lift numerical value) can change all D type water pumps into DC type water pump like this.
The utility model DC type water pump is to retrofit on the basis of traditional D type water pump:
1) Zhong Jian the two inlet segment pump housings 2 and 3 interconnect, and in addition the two sides is connected with separately stage casing respectively, removes lower margin part and packing cavity.
2) low, high two draining sections 4 are connected with 5 stage casings inboard and separately, and the outer end directly is connected with bearing bracket stand.Because stuffing frame is cancelled, packing cavity should be cast directly on the two draining section pump housings.
3) should be according to the axial arrangement model of DC type water pump and progression different, to the axial length of the pump shaft 1 of various water pumps, corresponding change is done in the length of lining and each keyway position on axle on the axle.
Because the caliber size of water pump, progression how much, have nothing in common with each other, so only design the assembling schematic representation of DC type water pump here, the accessory figure with each model, each progression does not draw one by one, and water pump manufactory can by the above-mentioned requirement that should change, make the DC type water pump of each each progression of bore respectively according to the D type water pump of each model and the DC type pump of respective model.The adapted motor is pressed bore, progression is identical with D type pump.
Claims (5)
1, a kind of plural serial stage disjunctor water pump, it comprises pump case, with the power plant pump shaft [1] that joins, it is characterized in that: become movable sealing sleeve to be contained on the pump shaft [1] with the left end of the low pressure inlet segment [2] that comes water pipe to join, right-hand member communicates with the low pressure stage casing [14] that is set with low pressure stage casing impeller [6] and low pressure stage casing stator [7], low-pressure drainage section [4] right-hand member of the shrunk-on disc [15] that communicates with low pressure stage casing [14] becomes the motive sealing engage sleeves to be contained on the pump shaft [1], the right-hand member of high pressure inlet segment [3] becomes motive sealing and low pressure inlet segment [2] is opposing is sleeved on the pump shaft [1], middle water pipe [11] is connected with the water intake of high pressure inlet segment [3] and the drain opening of low-pressure drainage section [4] respectively, the left end of high pressure inlet segment [3] be set with high pressure stage casing impeller [18], the high pressure stage casing [16] of high pressure stage casing stator [19] is connected, and the left end of the High Pressure Drain section [5] that is set with impeller [17] that is connected with high pressure stage casing [16] becomes movable sealing sleeve to be equipped with on the pump shaft [1].
2, according to the described plural serial stage disjunctor of claim 1 water pump, it is characterized in that: the high pressure inlet segment [3] of opposing installation is installed on the pump shaft [1] by sleeve [8] with low pressure inlet segment [2], suit seal ring [9] between sleeve [8] and high pressure inlet segment [3], suit seal ring [10] between sleeve [8] and low pressure inlet segment [2].
3, according to the described plural serial stage disjunctor of claim 2 water pump, it is characterized in that: high pressure inlet segment [3] left side becomes motive sealing to cooperate suit 1-5 high pressure stage casing [16] that is respectively installed with high pressure stage casing impeller [18], high pressure stage casing stator [19], the left side of low pressure inlet segment [2] becomes motive sealing to cooperate suit 1-5 low pressure stage casing [14] that is respectively installed with low pressure stage casing impeller [6] and low pressure stage casing stator [7], and middle water pipe [11] is arranged on and forms the integrated type enclosed channel on the pump housing.
4, according to the described plural serial stage disjunctor of claim 2 water pump, it is characterized in that: the high pressure stage casing [16] of opposing installation is identical with size, the specification of low pressure stage casing [14], and the impeller [6] in the impeller in high pressure stage casing [18], stator [19] and low pressure stage casing, the Hand of spiral of stator [7] are identical.
5, according to the described plural serial stage disjunctor of claim 1 water pump, it is characterized in that: outlet valve [12] is installed on the middle water pipe [11].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224248 CN2551784Y (en) | 2002-06-11 | 2002-06-11 | Multistage serial integrated water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224248 CN2551784Y (en) | 2002-06-11 | 2002-06-11 | Multistage serial integrated water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2551784Y true CN2551784Y (en) | 2003-05-21 |
Family
ID=33701719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02224248 Expired - Fee Related CN2551784Y (en) | 2002-06-11 | 2002-06-11 | Multistage serial integrated water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2551784Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715680B (en) * | 2004-06-30 | 2011-03-30 | Ksb股份公司 | Multi stage structure type centrifugal pump |
| CN110431315A (en) * | 2017-03-23 | 2019-11-08 | 株式会社荏原制作所 | Multistage pump |
-
2002
- 2002-06-11 CN CN 02224248 patent/CN2551784Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715680B (en) * | 2004-06-30 | 2011-03-30 | Ksb股份公司 | Multi stage structure type centrifugal pump |
| CN110431315A (en) * | 2017-03-23 | 2019-11-08 | 株式会社荏原制作所 | Multistage pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2477178A (en) | Pump system | |
| CN2913692Y (en) | Centrifugal pump | |
| CN2551784Y (en) | Multistage serial integrated water pump | |
| CN203394792U (en) | Energy-saving multistage deep well submersible and centrifugal pump | |
| CN2328815Y (en) | Double stage parallel fire fighting pump | |
| CN2809288Y (en) | Pump dedicated for feeding of filter press | |
| CN201521448U (en) | Easily disassembled pipeline centrifugal pump | |
| CN206495786U (en) | A kind of low-flow high-lift centrifugal multistage pump multiple centrifugal pump | |
| CN2643030Y (en) | Easy-to-disassemble multi-stage pump | |
| CN2929282Y (en) | Horizontal guide vane type multistage middle open centrifugal pump | |
| CN114017347A (en) | Sectional type multistage centrifugal pump without balancing device | |
| CN210565153U (en) | Integral core-pulling full-pressure design double-shell high-pressure centrifugal pump | |
| CN2646424Y (en) | High pressure self balancing segment type centrifugal pump | |
| CN2849240Y (en) | Stainless steel multistage deep well submerged electric pump | |
| CN209604355U (en) | A kind of energy-saving clean Compound Gear Motor | |
| CN208587298U (en) | Sectional type multi-stage pump | |
| CN2718290Y (en) | Single-suction two stage centrifugal pump | |
| CN2556405Y (en) | Single-stage double-entry centrifugal dirty water pump | |
| CN2622432Y (en) | Self-balance multi-stage segmental centrifugal pump | |
| CN200978839Y (en) | Vertical multistage pump | |
| CN1055413A (en) | Single suction opposed type high-lift submersible pump | |
| CN115306728B (en) | Circulating water pump convenient to maintain and operation method thereof | |
| CN215927791U (en) | Energy-efficient pre-pump that power plant unit was used | |
| CN201202682Y (en) | Double-drive symmetrical balance centrifugal type horizontal pump | |
| CN219605575U (en) | First-stage double-suction self-balancing multistage pump with bearing cooling structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |