CN202370854U - Double-casing small-flow centrifugal pump - Google Patents
Double-casing small-flow centrifugal pump Download PDFInfo
- Publication number
- CN202370854U CN202370854U CN2011205399325U CN201120539932U CN202370854U CN 202370854 U CN202370854 U CN 202370854U CN 2011205399325 U CN2011205399325 U CN 2011205399325U CN 201120539932 U CN201120539932 U CN 201120539932U CN 202370854 U CN202370854 U CN 202370854U
- Authority
- CN
- China
- Prior art keywords
- pump housing
- pump
- liner
- runner
- impeller
- 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
Links
- 238000009792 diffusion process Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 8
- 210000004907 gland Anatomy 0.000 claims description 7
- 229910001018 Cast iron Inorganic materials 0.000 claims description 6
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 238000009304 pastoral farming Methods 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4286—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps inside lining, e.g. rubber
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a pump, in particular to a double-casing small-flow centrifugal pump. The technical scheme is that the double-casing small-flow centrifugal pump comprises a pump body, a shaft seal device, a pump cover arranged between the pump body and the shaft seal device, a rotary shaft and an impeller. A flowing channel is arranged between the pump body and the pump cover, a medium inlet and a medium outlet which are communicated with each other through the flowing channel are arranged on the pump body, and the impeller is in linkage connection with the rotary shaft, extends into the flowing channel and is an open impeller. A pump body liner and a pump cover liner are arranged in the flowing channel, the medium outlet is communicated with the flowing channel through a diffusion hole arranged on the pump body liner, the diffusion hole is cone-shaped, one end of the diffusion hole connected with the medium outlet is the large end, and one end of the diffusion hole connected with the flowing channel is the small end. The flowing channel is matched with the outer outline of the impeller, and the cross section of the flowing channel is cylindrical. By means of the technical scheme, the double-casing small-flow centrifugal pump is long in service life, simple in structure and suitable for conveying of media with particles.
Description
Technical field
The utility model relates to a kind of pump, particularly a kind of bivalve body small flow centrifugal pump.
Background technique
Centrifugal pump is widely used as a kind of medium conveying apparatus.The traditional centrifugal pump mainly is made up of the pump housing, rotating shaft, impeller and gland seal device, and the pump housing is provided with medium entry port, MEDIA FLOW outlet and connects the medium entry port and the runner of MEDIA FLOW outlet.Usually; Impeller adopts double shrouded wheel more, and double shrouded wheel is had relatively high expectations to runner, and the flow in the pump housing need be designed to the structure of broad; And this type of design is used can only be to the bigger operating mode of fed sheet of a media the time, then can't implement the conveying to medium for the small flow field.When being used to carry the medium of particle, the particle in the medium is sticking easily to be blocked up in double shrouded wheel, has influence on centrifugal force, also has influence on the performance of the fed sheet of a media of centrifugal pump; Simultaneously, the particle in the medium can make the too fast wearing and tearing of the pump housing and inner body thereof to the corrosion that impacts of pump housing inside, has shortened the working life of the pump housing.
Summary of the invention
To the deficiency that existing technology exists, the utility model provide a kind of long service life, simple in structure, be applicable to the bivalve body small flow centrifugal pump that the band granule medium is carried.
For realizing above-mentioned purpose; The utility model provides following technological scheme: a kind of bivalve body small flow centrifugal pump, and include the pump housing, gland seal device, be located at pump cover, rotating shaft and impeller between the pump housing and the gland seal device, be provided with runner between the pump housing and the pump cover; The pump housing is provided with through the medium entry port of runner conducting and MEDIA FLOW outlet; Impeller and rotating shaft are connected and extend in the runner, it is characterized in that: described impeller is a unshrouded impeller, is provided with pump housing liner that coats pump housing inwall and the pump cover liner that is fixedly connected with pump cover in the described runner; Between MEDIA FLOW outlet and the runner through being opened in the diffusion hole conducting on the pump housing liner; This diffusion hole be shaped as taper shape, an end that is connected with the MEDIA FLOW outlet is for holding greatly, an end that is connected with runner is a small end; The external frame of described runner and impeller is adaptive, and the cross section of runner is cylindrical.
Adopt technique scheme, select impeller for use unshrouded impeller, after being provided with like this; Directly machine shaping of impeller; Machining accuracy guarantees easily, and the runner of having avoided double shrouded wheel is too narrow and can't cast, and the blade of unshrouded impeller does not have closed shape; When being directed to the medium with particle and carrying, the particle in the medium can not amass and flow in impeller resulting in blockage; Pump housing liner that coats pump housing inwall and the pump cover liner that is connected with pump cover are set in runner; The inwall of the pump housing that directly contacts with runner and pump cover played anti-ly wash away, etch-proof protective action; Particle in the runner in the medium can not impact and rub the pump housing and pump cover, has prolonged the working life of each component in the pump housing runner; Being provided with of diffusion hole is beneficial to the medium of carrying small flow; The cross section of runner is cylindrical, is to process for ease on the one hand, also can guarantee flow channel shape and surface accuracy on the other hand.
The utility model further is set to: pump housing liner include body, be located at sealed end, the fixed end on the body and be located at sealed end and fixed end between connecting end and positioning end; Its sealed end extends to the medium entry port of the pump housing and the joining place of runner; And be provided with the graphite grazing pad between the sealed end and the pump housing; The fixed end place of pump housing liner is provided with the annular boss that is vertical setting with body; The annular boss place that the pump housing is positioned at pump housing liner is provided with the shoulder rank, and this annular boss is fixedly connected with the place, shoulder rank of the pump housing through fastening screw trip bolt, and the positioning end place of pump housing liner offers locating notch; Described pump cover liner extends in this locating notch and forms the location with pump housing liner, and described diffusion hole is opened in the connecting end place of pump housing liner.
Adopt technique scheme, the sealed end place of pump housing liner can not enter between pump housing liner and the pump housing inwall medium that is entered in the runner by pump housing medium entry port through the graphite grazing pad is set, and has the seal protection effect; The fixed end of pump housing liner makes being connected and being compactness between pump housing liner and the pump housing through being connected with the conflict on pump housing shoulder rank and fastening screw trip bolt; It then is in order to guarantee that further pump housing liner and pump cover liner are in the stability in the runner that positioning end place locating notch is connected with the conflict of pump cover.
The utility model further is set to: the material of the pump housing is a Martensitic Stain Less Steel, and the material of pump housing liner and pump cover liner is the hard metal antifriction cast iron.
Adopt technique scheme, the material of the pump housing selects for use Martensitic Stain Less Steel to be because Martensitic Stain Less Steel at high temperature has better tensile strength; The material of pump housing liner and pump cover liner select for use the hard metal antifriction cast iron then to be since the hard metal antifriction cast iron under worst hot case, to have an erosion resistance wear-resisting, be applicable to the operating mode of carrying the medium that has particle.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the I portion enlarged diagram of Fig. 1.
Embodiment
Like Fig. 1, a kind of bivalve body small flow centrifugal pump shown in Figure 2; Include the pump housing 1, gland seal device 2, be located at pump cover 3, rotating shaft 4 and impeller 5 between the pump housing 1 and the gland seal device 2; Be provided with runner 6 between the pump housing 1 and the pump cover 3; The pump housing 1 is provided with through the medium entry port 11 of runner 6 conductings and MEDIA FLOW outlet 12, and impeller 5 is connected with rotating shaft 4 and extends in the runner 6.In the utility model embodiment, impeller 5 is selected for use and is unshrouded impeller, after being provided with like this; Directly machine shaping of impeller 5; Machining accuracy guarantees easily, and the runner of having avoided double shrouded wheel is too narrow and can't cast, and the blade of unshrouded impeller does not have closed shape; When being directed to the medium with particle and carrying, the particle in the medium can not amass and flow in impeller 5 resulting in blockage.In order to prevent that particle in the medium in the runner 6 from impacting to the pump housing 1 and the pump housing 1 inner component and cause wearing and tearing; Be provided with pump housing liner 7 that coats pump housing inwall and the pump cover liner 8 that is fixedly connected with pump cover 3 in the runner 6; Wherein, The material of the pump housing 1 is a Martensitic Stain Less Steel, and Martensitic Stain Less Steel at high temperature has better tensile strength, so just can increase the tensile strength of the pump housing 1 under the condition of high temperature; The material of pump housing liner 7 and pump cover liner 8 is the hard metal antifriction cast iron; The hard metal antifriction cast iron has an erosion resistance under worst hot case wear-resisting; Be applicable to the operating mode of carrying the medium that has particle; Make pump housing liner 7 and pump cover liner 8 be applicable to the operating mode of carrying the medium that has particle, and be easy to change.Through being opened in diffusion hole 81 conductings on the pump housing liner 8, the end that this diffusion hole 81 is connected with MEDIA FLOW outlet 12 is big end between MEDIA FLOW outlet 12 and the runner 6, and an end that is connected with runner 6 is a small end; The assurance of processing and precision for ease, runner 6 is adaptive with the external frame of impeller 5, and the cross section of runner 6 is cylindrical.
In the utility model embodiment; Pump housing liner 7 include body 71, be located at sealed end 72, the fixed end 73 on the body 71 and be located at sealed end 72 and fixed end 73 between connecting end 74 and positioning end 75; Its sealed end 72 extends to the medium entry port 11 of the pump housing 1 and the joining place of runner 6; And be provided with graphite grazing pad 76 between the sealed end 72 and the pump housing 1, fixed end 73 places of pump housing liner 7 are provided with the annular boss 731 that is vertical setting with body 71, and annular boss 731 places that the pump housing 1 is positioned at pump housing liner 7 are provided with shoulder rank 13; This annular boss 731 is fixedly connected with 13 places, shoulder rank of the pump housing 1 through fastening screw trip bolt; Positioning end 75 places of pump housing liner 7 offer locating notch 751, and pump cover liner 8 extends in this locating notch 751 and forms the location with pump housing liner 7, and diffusion hole 81 is opened in connecting end 74 places of pump housing liner 7.
Claims (3)
1. bivalve body small flow centrifugal pump; Include the pump housing, gland seal device, be located at pump cover, rotating shaft and impeller between the pump housing and the gland seal device; Be provided with runner between the pump housing and the pump cover, the pump housing is provided with through the medium entry port of runner conducting and MEDIA FLOW outlet, and impeller and rotating shaft are connected and extend in the runner; It is characterized in that: described impeller is a unshrouded impeller; Be provided with pump housing liner that coats pump housing inwall and the pump cover liner that is fixedly connected with pump cover in the described runner, MEDIA FLOW export and runner between through being opened in the diffusion hole conducting on the pump housing liner, this diffusion hole be shaped as taper shape; An end that is connected with the MEDIA FLOW outlet is big end, and an end that is connected with runner is a small end; The external frame of described runner and impeller is adaptive, and the cross section of runner is cylindrical.
2. bivalve according to claim 1 body small flow centrifugal pump; It is characterized in that: described pump housing liner include body, be located at sealed end, the fixed end on the body and be located at sealed end and fixed end between connecting end and positioning end; Its sealed end extends to the medium entry port of the pump housing and the joining place of runner; And be provided with the graphite grazing pad between the sealed end and the pump housing, the fixed end place of pump housing liner is provided with the annular boss that is vertical setting with body, and the annular boss place that the pump housing is positioned at pump housing liner is provided with the shoulder rank; This annular boss is fixedly connected with the place, shoulder rank of the pump housing through fastening screw trip bolt; The positioning end place of pump housing liner offers locating notch, and described pump cover liner extends in this locating notch and forms the location with pump housing liner, and described diffusion hole is opened in the connecting end place of pump housing liner.
3. bivalve according to claim 1 and 2 body small flow centrifugal pump, it is characterized in that: described pump housing material is a Martensitic Stain Less Steel, the material of pump housing liner and pump cover liner is the hard metal antifriction cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205399325U CN202370854U (en) | 2011-12-21 | 2011-12-21 | Double-casing small-flow centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205399325U CN202370854U (en) | 2011-12-21 | 2011-12-21 | Double-casing small-flow centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370854U true CN202370854U (en) | 2012-08-08 |
Family
ID=46594559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205399325U Expired - Lifetime CN202370854U (en) | 2011-12-21 | 2011-12-21 | Double-casing small-flow centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370854U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425551A (en) * | 2011-12-21 | 2012-04-25 | 嘉利特荏原泵业有限公司 | Dual-shell small-flow centrifugal pump |
| CN105065288A (en) * | 2015-09-08 | 2015-11-18 | 湘潭大学 | Small-sized water pumping device using flowing water kinetic energy |
-
2011
- 2011-12-21 CN CN2011205399325U patent/CN202370854U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425551A (en) * | 2011-12-21 | 2012-04-25 | 嘉利特荏原泵业有限公司 | Dual-shell small-flow centrifugal pump |
| CN105065288A (en) * | 2015-09-08 | 2015-11-18 | 湘潭大学 | Small-sized water pumping device using flowing water kinetic energy |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |