CN108194368A - A kind of low Pulp pump for rinsing cavity pressure - Google Patents
A kind of low Pulp pump for rinsing cavity pressure Download PDFInfo
- Publication number
- CN108194368A CN108194368A CN201711397313.5A CN201711397313A CN108194368A CN 108194368 A CN108194368 A CN 108194368A CN 201711397313 A CN201711397313 A CN 201711397313A CN 108194368 A CN108194368 A CN 108194368A
- Authority
- CN
- China
- Prior art keywords
- pump
- impeller
- notopodium
- convex edge
- face
- 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.)
- Pending
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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of low Pulp pump of flushing water pressure, including pump case, pump shaft, the rear pump cover being sleeved on pump shaft being connect with pump case, filler and seal cage are set between the pump shaft and rear pump cover, the atmospheric side setting gland of pump shaft, the pump inner cavity side installation impeller of pump shaft, respective pump inner cavity side is extended with the convex edge between the notopodium face for being inserted into impeller and wheel hub on the rear pump cover.The section shape of the convex edge is the corresponding tongue shape of shape between the notopodium face of impeller and wheel hub.Gap between the notopodium face and wheel hub of convex edge and impeller is 3.5 millimeters.
Description
Technical field
The present invention relates to a kind of Pulp pump, particularly a kind of low Pulp pump for rinsing cavity pressure.
Background technology
Pulp pump belongs to one kind of centrifugal pump, is to make solid, liquid by the effect by centrifugal force (rotation of the impeller of pump)
A kind of increased machinery of blending agent energy is a kind of equipment for the kinetic energy and potential energy for converting electric energy to medium.Pulp pump is wide
It is general to be applied to the industries such as mine, electric power, metallurgy, coal, environmental protection, for conveying the slurry containing abrasive solids particle.
Since Pulp pump is mainly for delivery of the slurry containing abrasive solids particle, so in use to avoid
Slurry leaks, and needs to set sealing device between the power input shaft end of Pulp pump and the pump case of Pulp pump, and filler is close
Envelope is most common seal form, generally comprises pump shaft and the axle sleeve being fixed on pump shaft excircle, on the excircle of axle sleeve from
The lumen side of atmospheric side to pump is disposed with filler and seal cage, and the outside of filler is fixed by gland, set on seal cage
It is equipped with internal flow channel, rear pump cover is set on the excircle of filler and seal cage, be provided on rear pump cover and rinse the mouth of a river, rinse the mouth of a river
Corresponding with the position of the internal flow channel of seal cage, gland is fixedly attached on rear pump cover, is passed through between rear pump cover and pump case
Screw connects.High-pressure washing water is required in this stuffing seal, high-pressure washing water passes through the flushing mouth of a river on rear pump cover
It beats to Pulp pump inside, it is desirable that the pressure of flushing water is higher than the pressure of the slurry in pump chamber, can just play the effect of sealing in this way
Fruit.The pressure of flushing water needs seal water pump to provide, and since Pulp pump has, pumped (conveying) medium is heavier, working environment is poor and raises
Journey farther out the characteristics of, the pressure for causing slurry in Pulp pump is higher, to achieve the purpose that sealing, to the pressure requirements of flushing water
Also just very high, the pressure of the seal water pump to providing flushing water also requires higher accordingly, certainly will increase the use of Pulp pump
Cost.In addition, axial seal pressure is high, although slurry can be prevented excessive, filler can be also impacted, causes packing leaking.
Invention content
To solve the above problems, An embodiment provides a kind of low Pulp pump of flushing water pressure, including
Pump case, pump shaft, the rear pump cover being sleeved on pump shaft being connect with pump case set filler and water seal between the pump shaft and rear pump cover
Ring, the atmospheric side setting gland of pump shaft, the pump inner cavity side installation impeller of pump shaft, respective pump inner cavity one on the rear pump cover
Side is extended with the convex edge between the notopodium face for being inserted into impeller and wheel hub.
Further improvement of the present invention is：The section shape of the convex edge is between the notopodium face of impeller and wheel hub
The corresponding tongue shape of shape.
Further improvement of the present invention is：Gap between the notopodium face and wheel hub of the convex edge and impeller is 3.5 millis
Rice.
By adopting the above-described technical solution, the technological progress that the present invention obtains is：
The present invention by the improvement to rear pump cover structure, the convex edge of rear pump cover be inserted into impeller notopodium face and wheel hub it
Between, in the case where the lift of Pulp pump is constant, the pressure of the flushing chamber at pump inner cavity impeller is effectively reduced, so as to reduce
Requirement to seal water pump greatly reduces the use cost of Pulp pump.Simultaneously as the reduction of flushing water pressure, also reduces
Impact to filler, avoids packing leaking, extends the service life of filler.
The section shape of convex edge is the corresponding tongue shape of shape between the notopodium face of impeller and wheel hub, processing facility,
Convex edge is disposed proximate to round close to pump shaft side, convenient for the installation of rear pump cover.
3.5 millimeters of gap is provided between the notopodium face and wheel hub of convex edge and impeller, can ensure that impeller works normally,
And effectively reduce the pressure for rinsing chamber.
Description of the drawings
Schematic diagrames of the Fig. 1 for the Pulp pump for rinsing cavity pressure low in an embodiment according to the present invention；
Specific embodiment
Schematic diagrames of the Fig. 1 for the Pulp pump of the low flushing cavity pressure in an embodiment according to the present invention.It please refers to Fig.1,
In one embodiment of the invention, the low Pulp pump of flushing water pressure includes pump case 3, rear pump cover 4, pump shaft 11 and impeller 2, on pump shaft 11
Rear pump cover 4, pump case 3, impeller 2 are sequentially installed from shaft end, rear pump cover 4 is fixedly connected by screw with pump case 3.Pump shaft 11 and rear pump
Axle sleeve 7, spacer 9 are sequentially arranged from atmospheric side to pump inner cavity between lid 4, filler 6, spacer 9 are set between axle sleeve 7 and rear pump cover 4
Seal cage 8 between rear pump cover 4 is set, internal flow channel is provided on seal cage 8, is provided on rear pump cover 4 and rinses the mouth of a river 5, punching
Wash water mouth 5 is corresponding with the position of the internal flow channel of seal cage 8.It is extended on the end face of respective pump inner cavity side on rear pump cover 4 convex
Along 10, convex edge 10 is inserted between notopodium face and the wheel hub of impeller 2, and the section shape of convex edge 10 is and the notopodium face of impeller 2 and wheel
The corresponding tongue shape of shape between hub, there is a gap between the notopodium face and wheel hub of convex edge 10 and impeller 2, convex edge 10 is by Pulp pump
The direct current channel that interior slurry overflows outward is changed to the channel of bending, reduces seal cage 8, spacer 9, rear pump cover 4 and impeller 2
The pressure rinsed at chamber 1 of composition, also just reduces the pressure requirements to seal water pump, so as to reduce the use of Pulp pump into
This.
In the present embodiment, the depth that the wheel hub of impeller 2 is stretched into convex edge 10 is 25 millimeters, convex edge 10 and the notopodium of impeller 2
Gap between face and wheel hub is 3.5 millimeters.
The present invention operation principle be：
Under the driving of driving device, pump shaft 11 rotates, and the impeller 2 of connection fixed thereto is driven to rotate, will input slag input
The slurry of stock pump is exported from delivery outlet.The rotation of pump shaft 11 drives axle sleeve 7 and spacer 9 to synchronize operating, filler 6 and seal cage 8
It is then stationary, it is fixed in 4 hole of rear pump cover.The output pressure of slurry causes slurry to have the tendency that overflowing outward in Pulp pump,
To avoid slurry excessive, setting filler 6, to ensure sealing effect, is needed from the mouth of a river 5 is rinsed to the input of pump chamber inside to seal
Flushing water, flushing water are entered by the internal flow channel of seal cage 8 and rinse chamber 1, since the pressure of flushing water is higher than slurry pressure, institute
Pump inner cavity is entered by rinsing chamber 1 with flushing water, achievees the purpose that sealing.Convex edge 10, convex edge are set on the rear pump cover 4 of the present invention
10 are inserted between the notopodium face of impeller 2 and wheel hub, reduce slurry in pump and liquidate and wash the pressure of chamber 1, thereby reduce to axis
The requirement of water shutoff pump.
Claims (3)
1. a kind of low Pulp pump for rinsing cavity pressure, which is characterized in that including：
Including pump case (3), pump shaft (11), the rear pump cover (4) being sleeved on pump shaft (11) being connect with pump case (3), the pump shaft
(11) filler (6) and seal cage (8), the atmospheric side setting gland of pump shaft (11), pump shaft are set between rear pump cover (4)
(11) pump inner cavity side installation impeller (2), it is characterised in that：Respective pump inner cavity side is extended with slotting on the rear pump cover (4)
Enter the convex edge (10) between the notopodium face of impeller (2) and wheel hub.
2. profit requires a kind of low Pulp pump of flushing water pressure described in 1, it is characterised in that：The section shape of the convex edge (10)
For the corresponding tongue shape of shape between the notopodium face and wheel hub of impeller (2).
3. profit requires a kind of low Pulp pump of flushing water pressure described in 2, it is characterised in that：The convex edge (10) and impeller (2)
Notopodium face and wheel hub between gap be 3.5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397313.5A CN108194368A (en) | 2017-12-21 | 2017-12-21 | A kind of low Pulp pump for rinsing cavity pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397313.5A CN108194368A (en) | 2017-12-21 | 2017-12-21 | A kind of low Pulp pump for rinsing cavity pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108194368A true CN108194368A (en) | 2018-06-22 |
Family
ID=62583353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711397313.5A Pending CN108194368A (en) | 2017-12-21 | 2017-12-21 | A kind of low Pulp pump for rinsing cavity pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108194368A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271288A (en) * | 2020-02-27 | 2020-06-12 | 洛阳瑞华新能源技术发展有限公司 | Centrifugal pump with main medium discharge port and rear pump cavity flushing liquid discharge port simultaneously |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2468804A1 (en) * | 1979-10-29 | 1981-05-08 | Rockwell International Corp | DEVICE WITH SEVERAL SEPARATE SEAL SEALS FOR ROTATING MACHINE |
| CN202125456U (en) * | 2011-04-13 | 2012-01-25 | 襄樊五二五泵业有限公司 | Adjustable mechanical seal structure for pump |
| CN203081862U (en) * | 2012-12-29 | 2013-07-24 | 石家庄联合盛鑫泵业股份有限公司 | Slurry pump with low rinsing water pressure |
-
2017
- 2017-12-21 CN CN201711397313.5A patent/CN108194368A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2468804A1 (en) * | 1979-10-29 | 1981-05-08 | Rockwell International Corp | DEVICE WITH SEVERAL SEPARATE SEAL SEALS FOR ROTATING MACHINE |
| CN202125456U (en) * | 2011-04-13 | 2012-01-25 | 襄樊五二五泵业有限公司 | Adjustable mechanical seal structure for pump |
| CN203081862U (en) * | 2012-12-29 | 2013-07-24 | 石家庄联合盛鑫泵业股份有限公司 | Slurry pump with low rinsing water pressure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271288A (en) * | 2020-02-27 | 2020-06-12 | 洛阳瑞华新能源技术发展有限公司 | Centrifugal pump with main medium discharge port and rear pump cavity flushing liquid discharge port simultaneously |
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| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180622 |
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| WD01 | Invention patent application deemed withdrawn after publication |