CN107676270A - A kind of apron plate backwashes Pulp pump - Google Patents
A kind of apron plate backwashes Pulp pump Download PDFInfo
- Publication number
- CN107676270A CN107676270A CN201711090416.7A CN201711090416A CN107676270A CN 107676270 A CN107676270 A CN 107676270A CN 201711090416 A CN201711090416 A CN 201711090416A CN 107676270 A CN107676270 A CN 107676270A
- Authority
- CN
- China
- Prior art keywords
- apron plate
- impeller
- hole
- water injection
- injection hole
- 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.)
- Withdrawn
Links
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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
-
- 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
- F04D29/42—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 invention discloses a kind of apron plate to backwash Pulp pump, including back blades, apron plate and pump cover before sheath, impeller, impeller, socket sheath in the pump cover, the sheath connects apron plate, the impeller is located in the cavity that sheath and apron plate are formed, back blades is connected and is located between impeller and apron plate with impeller before the impeller, and the apron plate is provided with water injection hole, and the water injection hole is through hole and is connected with the gap of impeller and apron plate；The pump cover is provided with through hole, the affixed galvanized pipe of water inlet end of the water injection hole, and the galvanized pipe is connected through the through hole on pump cover with external water source.The Pulp pump of this structure possesses following advantage：1. the working environment of impeller and apron plate substantially improves, alleviate the degree of wear, extend the service life of the two；2. reducing the capacity of returns of slurry in pump, the operating efficiency of pump is improved.The present invention is simple in construction, transformation is convenient, effectively increases the operating efficiency of Pulp pump and substantially prolongs the service life of Pulp pump.
Description
Technical field
The present invention relates to industrial centrifugal pump field, more particularly to a kind of apron plate backwash Pulp pump.
Background technology
Pulp pump is by by centrifugal force（The effect of pump）Make a kind of increased machinery of solid, liquid blending agent energy, will
Electric energy is converted into the kinetic energy of medium and the equipment of potential energy.Pulp pump is primarily adapted for use in：Mine, power plant, dredging, metallurgy, chemical industry, build
The industry field such as material and oil.Pulp pump is a kind of common industrial centrifugal pump, and its working media is usually containing solid particle
Slurry.During pump work, to reach the lift of needs and flow, the impeller of pump rotates at a high speed, to drive slurry to flow and from sheath
Discharge in exit.In the process due to pressure differential, a certain amount of slurry certainly will be had and be back to impeller and apron plate
Gap in.If due to containing the harder solid particle of dry consistency in slurry, so the slurry of these backflows will be to impeller and preceding shield
Plate produces strong abrasion and in turn results in both scrap.
To solve above-mentioned erosion problem, current in general way is：Before end face is designed with several impellers before the impeller
Back blades, back blades rotates with impeller before impeller, so as to produced on the slurry at the cylindrical place of impeller back blades to
Outer centrifugal force is to prevent slurry from being flowed back into the gap of impeller and apron plate, so as to reduce the slurry quantity in gap, subtract
Light abrasion of the slurry to impeller and apron plate is so as to delaying the service life of the two（As shown in Figure 1）.Such increase leaf
Though the structure design of back blades a certain degree of can mitigate abrasion of the backflow slurry to impeller and apron plate before wheel, mitigate effect
Fruit is limited, which still to have substantial amounts of slurry, to flow back.The abrasion of impeller and apron plate is still slag in terms of on-site actual situations
Stock pump wears so that a key factor of damage.
The content of the invention
Present invention aims to solve the deficiencies of the prior art, and provides a kind of a kind of abrasion for reducing impeller and apron plate, improve
The Pulp pump of pump work efficiency.
The technical solution adopted by the present invention is：It is secondary before a kind of apron plate backwash Pulp pump, including sheath, impeller, impeller
Blade, apron plate and pump cover, the interior socket sheath of the pump cover, the sheath connect apron plate, and the impeller is located at sheath with before
In the cavity that backplate is formed, back blades is connected and is located between impeller and apron plate with impeller before the impeller, the apron plate
Water injection hole is provided with, the water injection hole is through hole and is connected with the gap of impeller and apron plate；The pump cover is provided with through hole, institute
The affixed galvanized pipe of water inlet end of water injection hole is stated, the through hole of the galvanized pipe through pump cover is connected with external water source.
As a further improvement on the present invention, the diameter of the water injection hole is not less than 15mm.
As a further improvement on the present invention, the diameter of the through hole on the pump cover is more than 45mm, and the circle of the through hole
The center of circle of the heart and water injection hole is located on the same line.
As a further improvement on the present invention, the water inlet end of the water injection hole is tapped with G1/2 " internal threads, in the galvanized pipe
It is connected on the internal thread of water injection hole water inlet end.
As the further improvement of the present invention, the water filling hole site should meet following condition, if back blades before impeller
Outside diameter be A, root diameter (RD) B, then the theoretical center of water injection hole should be B in an axis of small circle, axis of great circle be（A+
B）In the range of/4 annulus formed, and the annulus center of circle should be on apron plate longitudinal center line.
As a further improvement on the present invention, the water injection hole water inlet end is provided with reinforcing ring, the reinforcing ring it is a diameter of
50mm。
As a further improvement on the present invention, the galvanized pipe is 4 points of galvanized pipes.
The beneficial effect that the present invention uses is：The Pulp pump of this structure possesses following advantage：1. the work of impeller and apron plate
Substantially improved as environment, alleviate the degree of wear, extend the service life of the two；2. reduce the capacity of returns of slurry in pump,
Improve the operating efficiency of pump.The present invention is simple in construction, transformation is convenient, effectively increases the operating efficiency of pump and substantially prolongs
The service life of pump.
Brief description of the drawings
Fig. 1 is prior-art illustration.
Fig. 2 is schematic diagram of the present invention.
Shown in figure：1 sheath, 2 impellers, back blades before 3 impellers, 4 apron plates, 5 pump covers, 6 water injection holes, 7 is zinc-plated
Pipe, 8 through holes.
Embodiment
With reference to Fig. 1 and Fig. 2, the present invention is described further.
As illustrated, back blades 3, apron plate 4 before a kind of apron plate backwash Pulp pump, including sheath 1, impeller 2, impeller
With pump cover 5, the interior socket sheath 1 of the pump cover 5, the sheath 1 connects apron plate 4, and the impeller 2 is located at sheath 1 and apron plate 4
In the cavity of composition, back blades 3 is connected with impeller 2 and between impeller 2 and apron plate 4 before the impeller, the apron plate 4
Water injection hole 6 is provided with, the water injection hole 6 is through hole and is connected with the gap of impeller 2 and apron plate 4；The pump cover 5 is provided with logical
Hole 8, the affixed galvanized pipe 7 of water inlet end of the water injection hole 6, the galvanized pipe 7 are connected through through hole 8 with external water source.
A water injection hole is set up at the end face correct position of apron plate, the interior spiral shell for the G1/2 " that the through hole water inlet end is tapped with
4 points of galvanized pipes are simultaneously inscribed in line, and the galvanized pipe passes through the external external water source of through hole on pump cover.One is introduced by the water injection hole
Stock press water enters in the gap of impeller and apron plate.This strand of current rotate in the presence of back blades with impeller before the impeller
And an outside centrifugal force is obtained, backflow slurry is ejected toward impeller outer circular direction, and then prevent outside slurry to impeller
Clearance backflow between apron plate, the Slurry transport in gap also can gradually obtain dilution so as to mitigate slurry significantly to impeller
With the abrasion of apron plate.
The Pulp pump of this structure has following requirement to press water such as：
1. can not be too low from the pressure water pressure of apron plate injection, it must not typically be less than the outlet pressure of Pulp pump；
2. the press water water source of injection must be sufficient, water source is forbidden to interrupt；
3. water source limpid must must not contain particle or impurity, in order to avoid water filling port blocks, and corrosivity can not be contained.
The Pulp pump of this structure has following requirement to the size of water injection hole, diameter and position：
1. the water filling bore dia of apron plate can not be too small, it must not typically be less than 15mm；
2. the position of water injection hole should determine according to back blades before impeller, if the outside diameter of back blades is A before impeller, root diameter (RD)
For B, then water injection hole theoretical center should be B in an axis of small circle, axis of great circle be（A+B）In the range of/4 annulus formed and
The annulus center of circle should be on apron plate longitudinal center line.
Installed for ease of live pipeline, the diameter of the through hole on the pump cover is more than 45mm, and the center of circle of the through hole with
It is located on the same line during the center of circle installation of water injection hole.
For ease of the connection of galvanized pipe and water injection hole, the water inlet end of the water injection hole is tapped with G1/2 " internal threads, described zinc-plated
Pipe is inscribed on the internal thread of water injection hole water inlet end.
To ensure the bulk strength of apron plate, the water inlet end of water injection hole 6 is provided with reinforcing ring, the reinforcing ring it is a diameter of
50mm.Ensure that its physical property improves in the local strength of apron plate by being arranged on the reinforcing ring of the water inlet end of water injection hole 6, from
And reduce loss.
The Pulp pump of this structure possesses following advantage：1. the working environment of impeller and apron plate substantially improves, mill is alleviated
Damage degree, the service life for extending the two；2. reducing the capacity of returns of slurry in pump, the operating efficiency of pump is improved.This hair
It is bright it is simple in construction, transformation is convenient, effectively increase and the operating efficiency of pump and substantially prolongs the service life of pump.
Those skilled in the art, can also be it is to be understood that the protection scheme of the present invention is not limited only to the above embodiments
Various permutation and combination and conversion are carried out on the basis of above-described embodiment, on the premise of without prejudice to spirit of the invention, to the present invention
The various conversion carried out are all fallen within protection scope of the present invention.
Claims (7)
1. a kind of apron plate backwashes Pulp pump, including sheath（1）, impeller（2）, back blades before impeller（3）, apron plate（4）With
Pump cover（5）, it is characterized in that the pump cover（5）Interior socket sheath（1）, the sheath（1）Connect apron plate（4）, the impeller（2）
Positioned at sheath（1）And apron plate（4）In the cavity of composition, back blades before the impeller（3）With impeller（2）It is connected and is located at impeller
（2）And apron plate（4）Between, the apron plate（4）It is provided with water injection hole（6）, the water injection hole（6）For through hole and and impeller
（2）And apron plate（4）Gap be connected；The pump cover（5）It is provided with through hole（8）, the water injection hole（6）The affixed plating of water inlet end
Zinc pipe（7）, the galvanized pipe（7）Through through hole（8）It is connected with external water source.
A kind of 2. apron plate backwash Pulp pump according to claim 1, it is characterized in that the water injection hole（6）Diameter not
Less than 15mm.
A kind of 3. apron plate backwash Pulp pump according to claim 1, it is characterized in that the pump cover（5）On through hole
（8）Diameter be more than 45mm, and the through hole（8）The center of circle and water injection hole（6）The center of circle be located on the same line.
A kind of 4. apron plate backwash Pulp pump according to claim 1, it is characterized in that the water injection hole（6）Water inlet end
It is tapped with G1/2 " internal threads, the galvanized pipe（7）It is inscribed in water injection hole（6）On the internal thread of water inlet end.
A kind of 5. apron plate backwash Pulp pump as claimed in any of claims 1 to 5, it is characterized in that the water filling
Hole site should meet following condition, if the outside diameter of back blades is A before impeller, root diameter (RD) B, then in the theory of water injection hole
The heart should be B in an axis of small circle, axis of great circle is（A+B）In the range of/4 annulus formed, and annulus center of circle Ying Qian
Backplate（4）On longitudinal center line.
A kind of 6. apron plate backwash Pulp pump according to claim 6, it is characterized in that the water injection hole（6）Water inlet end is set
There are reinforcing ring, a diameter of 50mm of the reinforcing ring.
A kind of 7. apron plate backwash Pulp pump according to claim 6, it is characterized in that the galvanized pipe（7）For 4 points of platings
Zinc pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711090416.7A CN107676270A (en) | 2017-11-08 | 2017-11-08 | A kind of apron plate backwashes Pulp pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711090416.7A CN107676270A (en) | 2017-11-08 | 2017-11-08 | A kind of apron plate backwashes Pulp pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107676270A true CN107676270A (en) | 2018-02-09 |
Family
ID=61146806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711090416.7A Withdrawn CN107676270A (en) | 2017-11-08 | 2017-11-08 | A kind of apron plate backwashes Pulp pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676270A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209897A (en) * | 2018-11-06 | 2019-01-15 | 江苏大学 | Multistage centrifugal pump rotor axial force balance mechanism |
| CN115045862A (en) * | 2022-06-18 | 2022-09-13 | 北京金海虹氮化硅有限公司 | Novel slurry pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1025425A (en) * | 1909-11-18 | 1912-05-07 | Anthony Maurice Robeson | Centrifugal pump. |
| US1967182A (en) * | 1934-04-03 | 1934-07-17 | Allen Sherman Hoff Co | Centrifugal pump |
| GB497287A (en) * | 1936-06-26 | 1938-12-16 | Allen Sherman Hoff Co | Improvements in centrifugal pumps |
| US2232648A (en) * | 1939-01-26 | 1941-02-18 | Allen Sherman Hoff Co | Centrifugal pump structure |
| US2365058A (en) * | 1943-06-04 | 1944-12-12 | Millard F Crawford | Section lined pump shell for dredging |
| CN101149066A (en) * | 2007-09-07 | 2008-03-26 | 济南东方天明机械有限公司 | Centrifugal type slurry pump impeller adjusting gap scouring and erosion-reducing technology and apparatus |
-
2017
- 2017-11-08 CN CN201711090416.7A patent/CN107676270A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1025425A (en) * | 1909-11-18 | 1912-05-07 | Anthony Maurice Robeson | Centrifugal pump. |
| US1967182A (en) * | 1934-04-03 | 1934-07-17 | Allen Sherman Hoff Co | Centrifugal pump |
| GB497287A (en) * | 1936-06-26 | 1938-12-16 | Allen Sherman Hoff Co | Improvements in centrifugal pumps |
| US2232648A (en) * | 1939-01-26 | 1941-02-18 | Allen Sherman Hoff Co | Centrifugal pump structure |
| US2365058A (en) * | 1943-06-04 | 1944-12-12 | Millard F Crawford | Section lined pump shell for dredging |
| CN101149066A (en) * | 2007-09-07 | 2008-03-26 | 济南东方天明机械有限公司 | Centrifugal type slurry pump impeller adjusting gap scouring and erosion-reducing technology and apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209897A (en) * | 2018-11-06 | 2019-01-15 | 江苏大学 | Multistage centrifugal pump rotor axial force balance mechanism |
| CN115045862A (en) * | 2022-06-18 | 2022-09-13 | 北京金海虹氮化硅有限公司 | Novel slurry pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180209 |