CN204738972U - Floating plug centrifugal pump - Google Patents
Floating plug centrifugal pump Download PDFInfo
- Publication number
- CN204738972U CN204738972U CN201520232100.7U CN201520232100U CN204738972U CN 204738972 U CN204738972 U CN 204738972U CN 201520232100 U CN201520232100 U CN 201520232100U CN 204738972 U CN204738972 U CN 204738972U
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- China
- Prior art keywords
- pump
- filter
- floating plug
- plate
- bearing
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- Expired - Fee Related
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Abstract
The utility model belongs to the centrifugal pump field especially relates to a floating plug centrifugal pump, including sealed, the discharge outlet of motor A, support, the pump body, pump shaft, bearing, motor coupling, intermediate shaft coupling, pump cupling, impeller, bearing cover, pump cover, drain plug, motor B, flow controller, filter, filter, water inlet, derivation A, derivation B, rose box, filter, water purification mouth A, water purification mouth B, water purification mouth C, the motor A be in the higher authority of support, the support is in the higher authority of pump cover, the pump shaft runs through support, motor coupling, intermediate shaft coupling, pump cupling, bearing, bearing cover, pump cover, impeller, drain plug are in the inside of the pump body, the filter is in the next door of the pump body, the floating plug is in the inside of filter, the inlet channel is connected the floating plug.
Description
Technical field
The utility model belongs to centrifugal pump field, particularly relates to a kind of floating plug centrifugal pump.
Background technique
Cavitation erosion (cavitation; Cavitation erosion) also known as cavitation pitting.Fluid under flow at high speed and pressure change condition, with the phenomenon that the metal surface of fluid contact occurs cavernous corrosion failure.Often occur in the rapid decompression district as centrifugal blade end of blade, form hole at this, hole is crushed in zone of high pressure and is produced surge pressure, destroys the protective film on metal surface, and rate of corrosion is accelerated.The feature of cavitation erosion first forms many tiny pits in metal surface, is then expanded into cave gradually.
The research of cavitation erosion surface topography is observed based on SEM mostly.The result of study of the many researchers surface that shows to cavitate produces serious plastic deformation, the microjet of fluid impacts and makes material surface produce cavitation erosion pin hole, subsequently in pin hole wall place crack initiation, crackle is internally expanded in tired mode, finally be tending towards parallel surfaces Directional Extension, cause top layer fritter to peel off when several crackle is connected, said process carries out repeatedly, and skin-material is constantly peeled off on time.Cavitation erosion microcosmic surface is uneven, is covered with cavitation erosion hole and crackle, and macroscopic view, in spongy pattern, produces pin hole and pit etc. sometimes.Edge, cavitation erosion hole forms hole lip, and hole lip is the major character of cavitation erosion, and this phenomenon supports that existing mechanism is theoretical, and the percussion with microjet is crossed in the impact produced when namely cavitation erosion is crumbled and fall from steam bubble.When cavitation is serious, material surface die break comes off.Sometimes can be observed fatigue striations under ESEM, thus, cavitation erosion is considered to a kind of fatigue ruption, and fatigue striations is the key character of fatigue fracture.Kocaflda and Vaidya etc. observe bottom the cavitation erosion pitting that produces in the cavitation erosion of A1 and have occurred striped, similar to fatigue striations.To the SEM observation on cavitate surface and surface lifting particle and the measurement of roughness, find that cavitation erosion surface characteristic is similar to Fatigue Fracture Characteristics.In cavitation erosion process, local plastic deformation striped affects formation and the expansion of crackle, causes material surface to relax and particle stripping, when Crack Extension is to certain depth, the vertical direction with being parallel to surface, usual edge is carried out, and this means that incubation period completes, the reduction of later generating material weight.Cavitation erosion is only one of many factors causing material damage, also observes by military service load simultaneously and corrodes the fatigue of materials caused.Crackle is along crystal boundary germinating, expansion and is connected and causes crystal grain to peel off being the important failure mode of one that cavitates.
From the working principle of centrifugal pump, near centrifugal pump impeller center (blade inlet), form low pressure area, the suction head of this pressure and pump is closely related.Pressure one timing above liquid storage tank, if pressure is lower near Pump Suction Nozzle, then suction head is higher.But the low pressure of suction port is conditional, this is because when the minimum pressure near blade inlet is equal to or less than the saturation vapor pressure of liquid under delivery temperature, liquid will gasify at this place and produce bubble, its will flow to zone of high pressure in company with liquid from low pressure area; Bubble condenses rapidly or breaks under High Pressure, and the liquid now rushes at the space occupied by Primordial Qi bubble with high speed, produce large surge pressure, and frequency of impact is high at shock point place; Due to percussion, the pump housing shaken and produce noise, and impeller and pump case local are in the repeated action of extreme shock power, make material surface tired, from beginning spot corrosion to forming crack, impeller or pump case are damaged, and this phenomenon is called cavitation phenomenon.When cavitation erosion occurs, owing to producing a large amount of bubbles, occupy the segment space of flow channel for liquids, cause the flow of pump, pressure head and decrease in efficiency.When cavitating serious, pump can not normal running.Therefore, in order to make centrifugal pump run well, should avoid producing cavitation phenomenon, this just requires that the minimum pressure near blade inlet must maintain more than a certain value, normally gets the saturation vapor pressure of liquid under delivery temperature as minimum pressure.Should be noted that, in practical operation, not easily determine the position of minimum pressure in pump, and be often as the criterion with the minimum pressure of surveying pump intake place.
Summary of the invention
The utility model provides a kind of floating plug centrifugal pump, to solve the problem that the centrifugal pump flow of inlet water that proposes in above-mentioned background technology cannot regulate automatically.
The technical problem that the utility model solves realizes by the following technical solutions: the utility model provides a kind of floating plug centrifugal pump, it is characterized in that: comprise motor, support, the pump housing, pump shaft, bearing, motor coupler, intermediate shaft coupling, pump coupling, impeller, bearing gland, pump cover, drain plug, dewatering outlet, filter seal, flow dontroller, filter, inlet channel, regulator plate A, regulator plate B, floating plug, filter screen, filter plate A, filter plate B, filter plate C, water purification mouth, described motor is on described support, and described support is on described pump cover, and described pump shaft runs through described support, motor coupler, intermediate shaft coupling, pump coupling, bearing, bearing gland, pump cover, one end of described pump shaft connects described motor, the other end of described pump shaft connects described impeller, described motor coupler is on described intermediate shaft coupling, and described intermediate shaft coupling is on described pump coupling, and described pump coupling is on described bearing, described bearing is on described bearing gland, described bearing gland on described pump cover, described pump cover on the described pump housing, described impeller, drain plug is in the inside of the described pump housing, and described filter is on the side of the described pump housing, and described filter seal is on described filter, and described inlet channel runs through described filter, described regulator plate A, regulator plate B is in the inside of described inlet channel, and described regulator plate A is below described regulator plate B, and described floating plug is in the inside of described filter, and described inlet channel connects described floating plug, described filter screen, filter plate A, filter plate B, filter plate C is in the inside of described floating plug, and described filter plate A is at described filter screen, between filter plate B, described filter plate B is at described filter plate A, between filter plate C, described water purification mouth is on described floating plug.
Described filter connects described dewatering outlet, and described dewatering outlet is in the inside of the described pump housing.
Described filter seal connects the described pump housing.
Described flow dontroller connects described filter.
The beneficial effects of the utility model are:
1 floating plug centrifugal pump is provided with filter, is provided with floating plug in filter, and floating plug connects inlet channel, can sink when increased flow capacity, the quantity entering centrifugal pump is reduced, otherwise increases, automatically can regulate flow of inlet water.
2 two regulator plates are placed up and down, the flow of adjustable inlet channel and speed, ensure that centrifugal pump normally uses.
The use of 3 three filter plates and filter screen, can eliminate bubble and produce source, reduces the destruction that when centrifugal pump uses, cavitation erosion produces.
The use of 4 flow dontrollers, guarantees filtration flow-rate, and what keep filter to run is unobstructed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
In figure: 1-motor, 2-support, the 3-pump housing, 4-pump shaft, 5-bearing, 6-motor coupler, 7-intermediate shaft coupling, 8-pump coupling, 9-impeller, 10-bearing gland, 11-pump cover, 12-drain plug, 13-dewatering outlet, 14-filter seal, 15-flow dontroller, 16-filter, 17-inlet channel, 18-regulator plate A, 19-regulator plate B, 20-floating plug, 21-filter screen, 22-filter plate A, 23-filter plate B, 24-filter plate C, 25-water purification mouth.
Embodiment:
The present embodiment comprises motor 1, support 2, the pump housing 3, pump shaft 4, bearing 5, motor coupler 6, intermediate shaft coupling 7, pump coupling 8, impeller 9, bearing gland 10, pump cover 11, drain plug 12, dewatering outlet 13, filter seal 14, flow dontroller 15, filter 16, inlet channel 17, regulator plate A18, regulator plate B19, floating plug 20, filter screen 21, filter plate A22, filter plate B23, filter plate C24, water purification mouth 25, motor 1 is on support 2, and support 2 is on pump cover 11, and pump shaft 4 runs through support 2, motor coupler 6, intermediate shaft coupling 7, pump coupling 8, bearing 5, bearing gland 10, pump cover 11, one end of pump shaft 4 connects motor 1, the other end of pump shaft 4 connects impeller 9, motor coupler 6 is on intermediate shaft coupling 7, and intermediate shaft coupling 7 is on pump coupling 8, and pump coupling 8 is on bearing 5, bearing 5 is on bearing gland 10, bearing gland 10 on pump cover 11, pump cover 11 on the pump housing 3, impeller 9, drain plug 12 is in the inside of the pump housing 3, and filter 16 is on the side of the pump housing 3, and filter seal 14 is on filter 16, and inlet channel 17 penetrates filter 16, regulator plate A18, regulator plate B19 is in the inside of inlet channel 17, and regulator plate A18 is below regulator plate B19, and floating plug 20 is in the inside of filter 16, and inlet channel 17 connects floating plug 20, filter screen 21, filter plate A22, filter plate B23, filter plate C24 is in the inside of floating plug 20, and filter plate A22 is at filter screen 21, between filter plate B23, filter plate B23 is at filter plate A22, between filter plate C24, water purification mouth 25 is on floating plug 20.
Filter 16 connects dewatering outlet 13, and dewatering outlet 13 is in the inside of the pump housing 3.
Filter seal 14 connects the pump housing 3.
Flow dontroller 15 connects filter 16.
Utilize technological scheme described in the utility model, or those skilled in the art being under the inspiration of technical solutions of the utility model, designing similar technological scheme, and reach above-mentioned technique effect, is all fall into protection domain of the present utility model.
Claims (4)
1. a floating plug centrifugal pump, is characterized in that: comprise motor, support, the pump housing, pump shaft, bearing, motor coupler, intermediate shaft coupling, pump coupling, impeller, bearing gland, pump cover, drain plug, dewatering outlet, filter seal, flow dontroller, filter, inlet channel, regulator plate A, regulator plate B, floating plug, filter screen, filter plate A, filter plate B, filter plate C, water purification mouth, described motor is on described support, and described support is on described pump cover, and described pump shaft runs through described support, motor coupler, intermediate shaft coupling, pump coupling, bearing, bearing gland, pump cover, one end of described pump shaft connects described motor, the other end of described pump shaft connects described impeller, described motor coupler is on described intermediate shaft coupling, and described intermediate shaft coupling is on described pump coupling, and described pump coupling is on described bearing, described bearing is on described bearing gland, described bearing gland on described pump cover, described pump cover on the described pump housing, described impeller, drain plug is in the inside of the described pump housing, and described filter is on the side of the described pump housing, and described filter seal is on described filter, and described inlet channel runs through described filter, described regulator plate A, regulator plate B is in the inside of described inlet channel, and described regulator plate A is below described regulator plate B, and described floating plug is in the inside of described filter, and described inlet channel connects described floating plug, described filter screen, filter plate A, filter plate B, filter plate C is in the inside of described floating plug, and described filter plate A is at described filter screen, between filter plate B, described filter plate B is at described filter plate A, between filter plate C, described water purification mouth is on described floating plug.
2. a kind of floating plug centrifugal pump according to claim 1, it is characterized in that: described filter connects described dewatering outlet, described dewatering outlet is in the inside of the described pump housing.
3. a kind of floating plug centrifugal pump according to claim 1, is characterized in that: described filter seal connects the described pump housing.
4. a kind of floating plug centrifugal pump according to claim 1, is characterized in that: described flow dontroller connects described filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520232100.7U CN204738972U (en) | 2015-04-16 | 2015-04-16 | Floating plug centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520232100.7U CN204738972U (en) | 2015-04-16 | 2015-04-16 | Floating plug centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204738972U true CN204738972U (en) | 2015-11-04 |
Family
ID=54420711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520232100.7U Expired - Fee Related CN204738972U (en) | 2015-04-16 | 2015-04-16 | Floating plug centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204738972U (en) |
-
2015
- 2015-04-16 CN CN201520232100.7U patent/CN204738972U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20160416 |